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8 posts

Check if Permutation of Pattern is Substring

Last Updated: 23 July 2025

Given two strings txt and pat having lowercase letters, the task is to check if any permutation of pat is a substring of txt. Examples: Input: txt = "geeks", pat = "eke"Ou...read more

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Count Subarrays With At Most K Distinct Elements

Last Updated: 23 July 2025

Given an array arr[] of integers and a positive integer k, the goal is to count the total number of subarrays that contain at most k distinct (unique) elements.Examples:In...read more

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Minimum Removals for Target Sum

Last Updated: 04 August 2025

Given an array of positive integers arr[] and an integer k, you can remove either the leftmost or rightmost element from the array in one operation. After each operation, ...read more

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Length of Longest Subarray having at Most K Frequency

Last Updated: 23 July 2025

Given an integer array arr[]and an integer K, the task is to find the length of the longest subarray such that the frequency of each element is less than or equal to K.Exa...read more

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Maximum number that can be obtain by swapping adjacent digits of same parity

Last Updated: 20 March 2024

Given an integer N, the task is to find the maximum integer that can be obtained from the given integer such that the adjacent digits of the same parity can be swapped any...read more

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Greedy Algorithms

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Number of subarray's of K size with Even Bitwise-OR

Last Updated: 23 July 2025

You are given an array arr[] containing n integers and an integer k. Find the number of subarrays of arr with length k whose bitwise OR is even.Examples:Input: arr[] = {4,...read more

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Minimum length of wire needed to connect all points who have value as 0 with at least one point with value 1.

Last Updated: 23 July 2025

Given two arrays Point[] and Value[] of length N, where Point[] represents the position of N points on a horizontal line. Then your task is to output the minimum length of...read more

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Find the Max sum of Subarray of length K in a Linked List

Last Updated: 23 July 2025

Given a linked list of integers and a number K, find the maximum sum of a subarray of length K.Examples:Input: List = 1 - -2 - 3 - 4 - -1 - 2, K = 3Output: 6Explanation: T...read more

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