Given an array of equal-length strings arr[], the task is to make all the strings of the array equal by replacing any character of a… Read More

# Tag Archives: Hash

Given two arrays A[] and B[] of size N, the task is to count the minimum number of swaps of similar indexed elements required to… Read More

Given a string S of length N and an integer K, the task is to find the minimum character replacements required to make the string… Read More

Given a string S consisting of lowercase alphabets of size N, the task is to count all substrings which contains the most frequent character in… Read More

Given string str of length N and an array arr[] of integers, for array element arr[i](1-based indexing), reverse the substring in indices [arr[i], N –… Read More

Given a string, str, the task is to find the indices of the given string such that the count of lexicographically smaller characters on the… Read More

Given an array arr[] consisting of N positive integers, the task is to maximize the number of subsequences that can be obtained from an array… Read More

Given an array arr[] consisting of N integers, the task is to print all adjacent integer pairs from the array which appears more than once… Read More

Given an array arr[] of N integers. For each element in the array, the task is to count the possible pairs (i, j), excluding the… Read More

String matching algorithms have greatly influenced computer science and play an essential role in various real-world problems. It helps in performing time-efficient tasks in multiple… Read More

Given an array arr[] of N elements. The task is to count the total number of indices (i, j) such that arr[i] = arr[j] and… Read More

Given matrices txt[][] of dimensions m1 x m2 and pattern pat[][] of dimensions n1 x n2, the task is to check whether a pattern exists… Read More