Search in Rotated Sorted Array
Problem Statement Given an array of distinct elements, which is formed from some places rotation of a sorted…
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Coding Problems
112 posts
Post Correspondence Problem
Problem Statement The Post Correspondence Problem is a popular undecidable decision problem, introduced by Emil Post in 1946.…
Longest Common Substring
Problem Statement Given two strings, the task is to find the longest common substring present in the given…
Combination Sum (With Solution)
Problem Statement Given an array, a[], consisting of distinct elements, and a target sum, find all the unique…
Sort String (C++, Java, and Python)
Problem Statement Given a string S of lowercase English characters ‘a’ – ‘z’. The task is to sort…
Reverse Level Order Traversal
Problem Statement Given a binary tree, return the reverse level order traversal of its nodes’ values. (i.e, from…
Remove Duplicates from Array
Problem Statement Given an array of integers, the task is to remove the duplicates from the array. Method…
Pattern Search – KMP Algorithm
Problem Statement The Pattern Searching algorithms are also called String Matching Algorithms. These algorithms are very helpful in…
Reverse String (C++, Java, and Python)
Problem Statement Given a string S. The task is to reverse the string. Examples: Input: S = “FACE”Output:…
Spiral Order Matrix
Problem Statement Given a matrix A of size N X M. The task is to print the matrix…