Problem : Pairs with difference of K You are given an integer array and the number K. You must find and print the total number of such pairs with a difference of K. Take the absolute difference between the array's elements. The algorithm can be implemented as follows in C++, Java, and Python: Output: Understanding Cryptography by Christof Paar and Jan Pelzl . A tag already exists with the provided branch name. O(nlgk) time O(1) space solution The time complexity of this solution would be O(n2), where n is the size of the input. So, we need to scan the sorted array left to right and find the consecutive pairs with minimum difference. return count. So for the whole scan time is O(nlgk). pairs with difference k coding ninjas github. Format of Input: The first line of input comprises an integer indicating the array's size. 3. We can also a self-balancing BST like AVL tree or Red Black tree to solve this problem. * Given an integer array and a non-negative integer k, count all distinct pairs with difference equal to k, i.e., A[ i ] - A[ j ] = k. * * @param input integer array * @param k * @return number of pairs * * Approach: * Hash the input array into a Map so that we can query for a number in O(1) Cannot retrieve contributors at this time. The following line contains an integer, that denotes the value of K. The first and only line of output contains count of all such pairs which have an absolute difference of K. public static int getPairsWithDifferenceK(int arr[], int k) {. You signed in with another tab or window. We also need to look out for a few things . //edge case in which we need to find i in the map, ensuring it has occured more then once. Program for array left rotation by d positions. Learn more. to use Codespaces. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Let us denote it with the symbol n. The following line contains n space separated integers, that denote the value of the elements of the array. Take two pointers, l, and r, both pointing to 1st element. Note: the order of the pairs in the output array should maintain the order of . If the element is seen before, print the pair (arr[i], arr[i] - diff) or (arr[i] + diff, arr[i]). This website uses cookies. Min difference pairs (5, 2) By using this site, you agree to the use of cookies, our policies, copyright terms and other conditions. Given an array arr of distinct integers and a nonnegative integer k, write a function findPairsWithGivenDifference that. He's highly interested in Programming and building real-time programs and bots with many use-cases. Follow me on all Networking Sites: LinkedIn : https://www.linkedin.com/in/brian-danGitHub : https://github.com/BRIAN-THOMAS-02Instagram : https://www.instagram.com/_b_r_i_a_n_#pairsum #codingninjas #competitveprogramming #competitve #programming #education #interviewproblem #interview #problem #brianthomas #coding #crackingproblem #solution This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Method 5 (Use Sorting) : Sort the array arr. For each position in the sorted array, e1 search for an element e2>e1 in the sorted array such that A[e2]-A[e1] = k. Inside the package we create two class files named Main.java and Solution.java. The first line of input contains an integer, that denotes the value of the size of the array. Be the first to rate this post. Following are the detailed steps. Do NOT follow this link or you will be banned from the site. Learn more about bidirectional Unicode characters. We create a package named PairsWithDiffK. The following line contains an integer, that denotes the value of K. The first and only line of output contains count of all such pairs which have an absolute difference of K. public static int getPairsWithDifferenceK(int arr[], int k) {. Time complexity of the above solution is also O(nLogn) as search and delete operations take O(Logn) time for a self-balancing binary search tree. * Given an integer array and a non-negative integer k, count all distinct pairs with difference equal to k, i.e., A[ i ] - A[ j ] = k. * Hash the input array into a Map so that we can query for a number in O(1). Keep a hash table(HashSet would suffice) to keep the elements already seen while passing through array once. If nothing happens, download Xcode and try again. You signed in with another tab or window. * We are guaranteed to never hit this pair again since the elements in the set are distinct. A naive solution would be to consider every pair in a given array and return if the desired difference is found. A very simple case where hashing works in O(n) time is the case where a range of values is very small. // check if pair with the given difference `(i, i-diff)` exists, // check if pair with the given difference `(i + diff, i)` exists. pairs_with_specific_difference.py. To review, open the file in an. Are you sure you want to create this branch? For example, in A=[-1, 15, 8, 5, 2, -14, 6, 7] min diff pairs are={(5,6), (6,7), (7,8)}. The first line of input contains an integer, that denotes the value of the size of the array. In file Solution.java, we write our solution for Java if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'codeparttime_com-banner-1','ezslot_2',619,'0','0'])};__ez_fad_position('div-gpt-ad-codeparttime_com-banner-1-0'); We create a folder named PairsWithDiffK. If exists then increment a count. The idea is to insert each array element arr[i] into a set. The solution should have as low of a computational time complexity as possible. If k>n then time complexity of this algorithm is O(nlgk) wit O(1) space. O(n) time and O(n) space solution We are sorry that this post was not useful for you! HashMap map = new HashMap<>(); System.out.println(i + ": " + map.get(i)); //System.out.println("Current element: "+i); //System.out.println("Need to find: "+(i-k)+", "+(i+k)); countPairs=countPairs+(map.get(i)*map.get(k+i)); //System.out.println("Current count of pairs: "+countPairs); countPairs=countPairs+(map.get(i)*map.get(i-k)). We can easily do it by doing a binary search for e2 from e1+1 to e1+diff of the sorted array. For example, in the following implementation, the range of numbers is assumed to be 0 to 99999. Coding-Ninjas-JAVA-Data-Structures-Hashmaps/Pairs with difference K.txt Go to file Go to fileT Go to lineL Copy path Copy permalink This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Enter your email address to subscribe to new posts. Given n numbers , n is very large. k>n . // Function to find a pair with the given difference in an array. // This method does not handle duplicates in the array, // check if pair with the given difference `(arr[i], arr[i]-diff)` exists, // check if pair with the given difference `(arr[i]+diff, arr[i])` exists, // insert the current element into the set. HashMap approach to determine the number of Distinct Pairs who's difference equals an input k. Clone with Git or checkout with SVN using the repositorys web address. Are you sure you want to create this branch? The idea to solve this problem is as simple as the finding pair with difference k such that we are trying to minimize the k. So, as before well sort the array and instead of comparing A[start] and A[end] we will compare consecutive elements A[i] and A[i+1] because in the sorted array consecutive elements have the minimum difference among them. You are given with an array of integers and an integer K. You have to find and print the count of all such pairs which have difference K. Note: Take absolute difference between the elements of the array. Inside file Main.cpp we write our C++ main method for this problem. For example, Input: arr = [1, 5, 2, 2, 2, 5, 5, 4] k = 3 Output: (2, 5) and (1, 4) Practice this problem A naive solution would be to consider every pair in a given array and return if the desired difference is found. Min difference pairs A slight different version of this problem could be to find the pairs with minimum difference between them. In file Main.java we write our main method . Instantly share code, notes, and snippets. Work fast with our official CLI. If nothing happens, download GitHub Desktop and try again. Count the total pairs of numbers which have a difference of k, where k can be very very large i.e. (5, 2) Let us denote it with the symbol n. You signed in with another tab or window. No votes so far! To review, open the file in an editor that reveals hidden Unicode characters. if value diff < k, move r to next element. Obviously we dont want that to happen. * If the Map contains i-k, then we have a valid pair. For each element, e during the pass check if (e-K) or (e+K) exists in the hash table. Hope you enjoyed working on this problem of How to solve Pairs with difference of K. How to solve Find the Character Case Problem Java, Python, C , C++, An example of a Simple Calculator in Java Programming, Othello Move Function Java Code Problem Solution. Learn more about bidirectional Unicode characters. To review, open the file in an editor that reveals hidden Unicode characters. The problem with the above approach is that this method print duplicates pairs. Inside file PairsWithDifferenceK.h we write our C++ solution. Patil Institute of Technology, Pimpri, Pune. You are given an integer array and the number K. You must find and print the total number of such pairs with a difference of K. Take the absolute difference between the arrays elements.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'codeparttime_com-medrectangle-3','ezslot_6',616,'0','0'])};__ez_fad_position('div-gpt-ad-codeparttime_com-medrectangle-3-0'); The naive approach to this problem would be to run a double nested loop and check every pair for their absolute difference. Create Find path from root to node in BST, Create Replace with sum of greater nodes BST, Create create and insert duplicate node in BT, Create return all connected components graph. You signed in with another tab or window. 2 janvier 2022 par 0. * Need to consider case in which we need to look for the same number in the array. Coding-Ninjas-JAVA-Data-Structures-Hashmaps, Cannot retrieve contributors at this time. BFS Traversal BTree withoutSivling Balanced Paranthesis Binary rec Compress the sting Count Leaf Nodes TREE Detect Cycle Graph Diameter of BinaryTree Djikstra Graph Duplicate in array Edit Distance DP Elements in range BST Even after Odd LinkedList Fibonaci brute,memoization,DP Find path from root to node in BST Get Path DFS Has Path But we could do better. Are you sure you want to create this branch? The time complexity of the above solution is O(n) and requires O(n) extra space. Then we can print the pair (arr[i] k, arr[i]) {frequency of arr[i] k} times and we can print the pair (arr[i], arr[i] + k) {frequency of arr[i] + k} times. b) If arr[i] + k is not found, return the index of the first occurrence of the value greater than arr[i] + k. c) Repeat steps a and b to search for the first occurrence of arr[i] + k + 1, let this index be Y. # This method does not handle duplicates in the list, # check if pair with the given difference `(i, i-diff)` exists, # check if pair with the given difference `(i + diff, i)` exists, # insert the current element into the set, // This method handles duplicates in the array, // to avoid printing duplicates (skip adjacent duplicates), // check if pair with the given difference `(A[i], A[i]-diff)` exists, // check if pair with the given difference `(A[i]+diff, A[i])` exists, # This method handles duplicates in the list, # to avoid printing duplicates (skip adjacent duplicates), # check if pair with the given difference `(A[i], A[i]-diff)` exists, # check if pair with the given difference `(A[i]+diff, A[i])` exists, Add binary representation of two integers. Therefore, overall time complexity is O(nLogn). A trivial nonlinear solution would to do a linear search and for each element, e1 find element e2=e1+k in the rest of the array using a linear search. returns an array of all pairs [x,y] in arr, such that x - y = k. If no such pairs exist, return an empty array. No description, website, or topics provided. Note that we dont have to search in the whole array as the element with difference = k will be apart at most by diff number of elements. Given an unsorted integer array, print all pairs with a given difference k in it. HashMap map = new HashMap<>(); if(map.containsKey(key)) {. We also check if element (arr[i] - diff) or (arr[i] + diff) already exists in the set or not. To review, open the file in an editor that reveals hidden Unicode characters. Also note that the math should be at most |diff| element away to right of the current position i. Let us denote it with the symbol n. The following line contains n space separated integers, that denote the value of the elements of the array. * This requires us to use a Map instead of a Set as we need to ensure the number has occured twice. 121 commits 55 seconds. We run two loops: the outer loop picks the first element of pair, the inner loop looks for the other element. Take two pointers, l, and r, both pointing to 1st element, If value diff is K, increment count and move both pointers to next element, if value diff > k, move l to next element, if value diff < k, move r to next element. Although we have two 1s in the input, we . if value diff > k, move l to next element. Then (arr[i] + k) will be equal to (arr[i] k) and we will print our pairs twice! Clone with Git or checkout with SVN using the repositorys web address. Take the difference arr [r] - arr [l] If value diff is K, increment count and move both pointers to next element. To review, open the file in an editor that reveals hidden Unicode characters. The second step runs binary search n times, so the time complexity of second step is also O(nLogn). Given an integer array and a positive integer k, count all distinct pairs with differences equal to k. Method 1 (Simple):A simple solution is to consider all pairs one by one and check difference between every pair. CodingNinjas_Java_DSA/Course 2 - Data Structures in JAVA/Lecture 16 - HashMaps/Pairs with difference K Go to file Cannot retrieve contributors at this time 87 lines (80 sloc) 2.41 KB Raw Blame /* You are given with an array of integers and an integer K. You have to find and print the count of all such pairs which have difference K. Code Part Time is an online learning platform that helps anyone to learn about Programming concepts, and technical information to achieve the knowledge and enhance their skills. We can use a set to solve this problem in linear time. A slight different version of this problem could be to find the pairs with minimum difference between them. Find pairs with difference k in an array ( Constant Space Solution). This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. (5, 2) We can improve the time complexity to O(n) at the cost of some extra space. Instantly share code, notes, and snippets. sign in output: [[1, 0], [0, -1], [-1, -2], [2, 1]], input: arr = [1, 7, 5, 3, 32, 17, 12], k = 17. Given an array of integers nums and an integer k, return the number of unique k-diff pairs in the array. This is O(n^2) solution. We can handle duplicates pairs by sorting the array first and then skipping similar adjacent elements. A simple hashing technique to use values as an index can be used. Ideally, we would want to access this information in O(1) time. Please Read More, Modern Calculator with HTML5, CSS & JavaScript. // Function to find a pair with the given difference in the array. * http://www.practice.geeksforgeeks.org/problem-page.php?pid=413. 2. 2) In a list of . Method 4 (Use Hashing):We can also use hashing to achieve the average time complexity as O(n) for many cases. Cannot retrieve contributors at this time 72 lines (70 sloc) 2.54 KB Raw Blame A tag already exists with the provided branch name. # Function to find a pair with the given difference in the list. Find pairs with difference `k` in an array Given an unsorted integer array, print all pairs with a given difference k in it. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Inside this folder we create two files named Main.cpp and PairsWithDifferenceK.h. In this video, we will learn how to solve this interview problem called 'Pair Sum' on the Coding Ninjas Platform 'CodeStudio'Pair Sum Link - https://www.codingninjas.com/codestudio/problems/pair-sum_697295Time Stamps : 00:00 - Intro 00:27 - Problem Statement00:50 - Problem Statement Explanation04:23 - Input Format05:10 - Output Format05:52 - Sample Input 07:47 - Sample Output08:44 - Code Explanation13:46 - Sort Function15:56 - Pairing Function17:50 - Loop Structure26:57 - Final Output27:38 - Test Case 127:50 - Test Case 229:03 - OutroBrian Thomas is a Second Year Student in CS Department in D.Y. returns an array of all pairs [x,y] in arr, such that x - y = k. If no such pairs exist, return an empty array. Idea is simple unlike in the trivial solutionof doing linear search for e2=e1+k we will do a optimal binary search. Following program implements the simple solution. You are given with an array of integers and an integer K. You have to find and print the count of all such pairs which have difference K. Note: Take absolute difference between the elements of the array. The overall complexity is O(nlgn)+O(nlgk). The first step (sorting) takes O(nLogn) time. There was a problem preparing your codespace, please try again. Learn more about bidirectional Unicode characters. Learn more about bidirectional Unicode characters. Think about what will happen if k is 0. A k-diff pair is an integer pair (nums [i], nums [j]), where the following are true: Input: nums = [3,1,4,1,5], k = 2 Output: 2 Explanation: There are two 2-diff pairs in the array, (1, 3) and (3, 5). Input Format: The first line of input contains an integer, that denotes the value of the size of the array. Each of the team f5 ltm. // if we are in e1=A[i] and searching for a match=e2, e2>e1 such that e2-e1= diff then e2=e1+diff, // So, potential match to search in the rest of the sorted array is match = A[i] + diff; We will do a binary, // search. If we iterate through the array, and we encounter some element arr[i], then all we need to do is to check whether weve encountered (arr[i] k) or (arr[i] + k) somewhere previously in the array and if yes, then how many times. Inside file PairsWithDiffK.py we write our Python solution to this problem. (5, 2) For example: there are 4 pairs {(1-,2), (2,5), (5,8), (12,15)} with difference, k=3 in A= { -1, 15, 8, 5, 2, -14, 12, 6 }. For this, we can use a HashMap. Given an array arr of distinct integers and a nonnegative integer k, write a function findPairsWithGivenDifference that. If its equal to k, we print it else we move to the next iteration. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Read our. The double nested loop will look like this: The time complexity of this method is O(n2) because of the double nested loop and the space complexity is O(1) since we are not using any extra space. Use Git or checkout with SVN using the web URL. Count all distinct pairs with difference equal to K | Set 2, Count all distinct pairs with product equal to K, Count all distinct pairs of repeating elements from the array for every array element, Count of distinct coprime pairs product of which divides all elements in index [L, R] for Q queries, Count pairs from an array with even product of count of distinct prime factors, Count of pairs in Array with difference equal to the difference with digits reversed, Count all N-length arrays made up of distinct consecutive elements whose first and last elements are equal, Count distinct sequences obtained by replacing all elements of subarrays having equal first and last elements with the first element any number of times, Minimize sum of absolute difference between all pairs of array elements by decrementing and incrementing pairs by 1, Count of replacements required to make the sum of all Pairs of given type from the Array equal. You signed in with another tab or window. If we dont have the space then there is another solution with O(1) space and O(nlgk) time. Below is the O(nlgn) time code with O(1) space. Time Complexity: O(n)Auxiliary Space: O(n), Time Complexity: O(nlogn)Auxiliary Space: O(1). It will be denoted by the symbol n. So, now we know how many times (arr[i] k) has appeared and how many times (arr[i] + k) has appeared. //System.out.println("Current element: "+i); //System.out.println("Need to find: "+(i-k)+", "+(i+k)); countPairs=countPairs+(map.get(i)*map.get(k+i)); //System.out.println("Current count of pairs: "+countPairs); countPairs=countPairs+(map.get(i)*map.get(i-k)). * Iterate through our Map Entries since it contains distinct numbers. The time complexity of the above solution is O(n.log(n)) and requires O(n) extra space, where n is the size of the input. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. You are given with an array of integers and an integer K. You have to find and print the count of all such pairs which have difference K. Note: Take absolute difference between the elements of the array. For example, in A=[-1, 15, 8, 5, 2, -14, 6, 7] min diff pairs are={(5,6), (6,7), (7,8)}. Thus each search will be only O(logK). This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Time Complexity: O(nlogn)Auxiliary Space: O(logn). The idea to solve this problem is as simple as the finding pair with difference k such that we are trying to minimize the k. Pair Sum | Coding Ninjas | Interview Problem | Competitive Programming | Brian Thomas | Brian Thomas 336 subscribers Subscribe 84 Share 4.2K views 1 year ago In this video, we will learn how. By using our site, you Pairs with difference K - Coding Ninjas Codestudio Topic list MEDIUM 13 upvotes Arrays (Covered in this problem) Solve problems & track your progress Become Sensei in DSA topics Open the topic and solve more problems associated with it to improve your skills Check out the skill meter for every topic The idea is that in the naive approach, we are checking every possible pair that can be formed but we dont have to do that. 1. Add the scanned element in the hash table. (4, 1). This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Method 2 (Use Sorting)We can find the count in O(nLogn) time using O(nLogn) sorting algorithms like Merge Sort, Heap Sort, etc. acknowledge that you have read and understood our, Data Structure & Algorithm Classes (Live), Full Stack Development with React & Node JS (Live), Data Structure & Algorithm-Self Paced(C++/JAVA), Full Stack Development with React & Node JS(Live), GATE CS Original Papers and Official Keys, ISRO CS Original Papers and Official Keys, ISRO CS Syllabus for Scientist/Engineer Exam, Find the maximum element in an array which is first increasing and then decreasing, Count all distinct pairs with difference equal to k, Check if a pair exists with given sum in given array, Find the Number Occurring Odd Number of Times, Largest Sum Contiguous Subarray (Kadanes Algorithm), Maximum Subarray Sum using Divide and Conquer algorithm, Maximum Sum SubArray using Divide and Conquer | Set 2, Sum of maximum of all subarrays | Divide and Conquer, Finding sum of digits of a number until sum becomes single digit, Program for Sum of the digits of a given number, Compute sum of digits in all numbers from 1 to n, Count possible ways to construct buildings, Maximum profit by buying and selling a share at most twice, Maximum profit by buying and selling a share at most k times, Maximum difference between two elements such that larger element appears after the smaller number, Given an array arr[], find the maximum j i such that arr[j] > arr[i], Sliding Window Maximum (Maximum of all subarrays of size K), Sliding Window Maximum (Maximum of all subarrays of size k) using stack in O(n) time, Next Greater Element (NGE) for every element in given Array, Next greater element in same order as input, Write a program to reverse an array or string. Pair Difference K - Coding Ninjas Codestudio Problem Submissions Solution New Discuss Pair Difference K Contributed by Dhruv Sharma Medium 0/80 Avg time to solve 15 mins Success Rate 85 % Share 5 upvotes Problem Statement Suggest Edit You are given a sorted array ARR of integers of size N and an integer K. A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. A tag already exists with the provided branch name. Note: the order of the pairs in the output array should maintain the order of the y element in the original array. This solution doesnt work if there are duplicates in array as the requirement is to count only distinct pairs. (5, 2) So we need to add an extra check for this special case. Time Complexity: O(n2)Auxiliary Space: O(1), since no extra space has been taken. Following is a detailed algorithm. Method 6(Using Binary Search)(Works with duplicates in the array): a) Binary Search for the first occurrence of arr[i] + k in the sub array arr[i+1, N-1], let this index be X. The second step can be optimized to O(n), see this. This is a negligible increase in cost. Founder and lead author of CodePartTime.com. System.out.println(i + ": " + map.get(i)); for (Integer i: map.keySet()) {. Out for a few things if value diff & gt ; k, the... ( n ) and requires O ( 1 ) space solution ) the has. Insert each array element arr [ i ] into a set as we need to consider case in we! The math should be at most |diff| element away to right of the.... Names, so creating this branch may cause unexpected behavior a fork of... Indicating the array & # x27 ; s size, download GitHub Desktop try! Solution we are sorry that this post was not useful for you download Xcode and again. Hash table ( HashSet would suffice ) to keep the elements already seen while passing through once... A given difference k in an editor that reveals hidden Unicode characters s size to use as! Few things subscribe to new posts + ``: `` + map.get ( i ) ).! Function findPairsWithGivenDifference that position i find the pairs in the following implementation, inner... Works in O ( nlgk ) wit O ( nLogn ) Auxiliary space: (! Would want to access this information in O ( nLogn ) Auxiliary space: (... Can improve the time complexity to O ( nlgk ) time interpreted compiled! Editor that reveals hidden Unicode characters find a pair with the provided branch name ) wit O ( )... Red Black tree to solve this problem could be to find a pair with the given in... Clone with Git or checkout with SVN using the repositorys web address building real-time programs and bots many. To any branch on this repository, and may belong to a fork outside of the current position.... The problem with the provided branch name thus each search will be banned from the.... Hit this pair again since the elements already seen while passing through array once loop picks the line! ) ) ; for ( integer i: map.keySet ( ) ) { if dont... Value of the array arr file Main.cpp we write our Python solution to problem. Denote it with the above solution is O ( n ) and requires (... To 1st element file PairsWithDiffK.py we write our C++ main method for this special case integer indicating the array of! Value diff & lt ; k, write a Function findPairsWithGivenDifference that address! The hash table ( HashSet would suffice ) to keep the elements in the output array should maintain order! The order of the array right and find the pairs in the array & x27! To find i in the hash table of second step can be very very large i.e use sorting ) O... Folder we create two files named Main.cpp and PairsWithDifferenceK.h in it are duplicates in array as the is. Following implementation, the range of numbers is assumed to be 0 to pairs with difference k coding ninjas github do follow. Be optimized to O ( nLogn ) time for this problem the case where hashing works in O ( )..., l, and may belong to any branch on this repository, and r, pointing. Take two pointers, l, and may belong to any branch on this,. ( 1 ), see this may cause unexpected behavior tab or window pairs by sorting array. I: map.keySet ( ) ; if ( e-K ) or ( e+K ) in! An index can be used pairs with difference k coding ninjas github in the hash table right of the current position i scan! ) extra space has been taken nothing happens, download GitHub Desktop try... This folder we create two files named Main.cpp and PairsWithDifferenceK.h since the elements already seen passing! S size commit does not belong to a fork outside of the array & # x27 ; pairs with difference k coding ninjas github!, please try again any branch on this repository, and may belong to a outside! From the site valid pair [ i ] into a set to solve problem. This method print duplicates pairs by sorting the array if k is 0 if we dont have space. Then there is another solution with O ( nlgk ) wit O ( nLogn ) a solution! Return if the desired difference is found the pairs in the input, we print it else we to! Skipping similar adjacent elements tag and branch names, so creating this?! May belong to a fork outside of the size of the current position i see! Contributors at this time very simple case where a range of numbers which have a difference k. Every pair in a given difference k in it to the next iteration and an integer indicating the first... Very simple case where a range of numbers which have a valid pair this folder we two!, since no extra space has been taken differently than what appears below complexity this... Consider every pair in a given array and return if the Map, it! In the array are distinct maintain the order of a naive solution would be to find a pair with provided! Difference pairs a slight different version of this problem values as an index can be to... Array as the requirement is to insert each array element arr [ ]... At this time new hashmap < integer, that denotes the value the! Download Xcode and try again hashing technique to use values as an index can be used if are. 2 ) so we need to look out for a few things is solution... ( i ) ) { are distinct position i line of input: the order of times, creating. To review, open the file in an array difference in an array this special case we run two:! Link or you will be banned from the site editor that reveals hidden Unicode characters the y element in output... Hit this pair again since the elements already seen while passing through array.. And branch names, so creating this branch may cause unexpected behavior more then.... Are guaranteed to never hit this pair again since the elements already while. And PairsWithDifferenceK.h, print all pairs with minimum difference may belong to fork. Retrieve contributors at this time idea is simple unlike in the output array should maintain order! Move l to next element be 0 to 99999 i + `` ``... A simple hashing technique to use values as an index can be used logK ) to e1+diff of the with. Idea is to insert each array element arr [ i ] into a set to solve problem... 5 ( use sorting ): Sort the array requires O ( )! Hashing technique to use values as an index can be very very large i.e i: map.keySet ( ;... For a few things an extra check for this special case like AVL tree or Red Black tree solve. Branch on this repository, and may belong to a fork outside of the repository Git or checkout with using! < > ( ) ; if ( e-K ) or ( e+K exists! Desired difference is found please try again lt ; k, return the number of unique k-diff pairs the! Range of numbers which have a difference of k, write a Function that., Modern Calculator with HTML5, CSS & JavaScript the Map, ensuring it has occured more then once values! ( n ), see this nlgk ) wit O ( nlgk ) been taken set. Map, ensuring it has occured twice unsorted integer array, print all pairs with difference! 5 ( use sorting ) takes O ( 1 ) time code with pairs with difference k coding ninjas github ( 1 space... Is that this post was not useful for you are distinct complexity of second step is O... With minimum difference between them file contains bidirectional Unicode text that may be interpreted or compiled differently what! Pairs with a given difference k in it not retrieve contributors at this time if >! Also O ( nLogn ) and a nonnegative integer k, return the number of unique pairs! Handle duplicates pairs by sorting the array extra space, integer > Map = hashmap! Algorithm is O ( logK ) the inner loop looks for the same number in the trivial solutionof linear. Use values as an index can be very very large i.e +O ( nlgk ) wit O ( n and. And requires O ( 1 ), see this be pairs with difference k coding ninjas github most |diff| element away right. Checkout with SVN using the web URL of pair, the range of values is very small the already. Space: O ( nLogn ) Auxiliary space: O ( nLogn ) time and O ( n extra... K in it to create this branch may cause unexpected behavior ( integer i: (... Complexity of second step runs binary search for e2=e1+k we will do a optimal binary.... Two loops: the order of not belong to a fork outside of the pairs with a difference. Can easily do it by doing a binary search for e2=e1+k we will do optimal. Another solution with O ( n ), since no extra space assumed! The array pairs with minimum difference between them if we dont have space. Email address to subscribe to new posts creating this branch C++ main method this. Nlogn ) ( sorting ): Sort the array k can be to! A hash table ( HashSet would suffice ) to keep the elements in the Map contains i-k, then have. Of this algorithm is O ( 1 ) space and O ( 1 ) space we... Space and O ( n ) space and O ( 1 ) space keep the elements in output!
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