GeeksforGeeks

Last Updated: 11 June 2024

Given an array of strings arr, the task is to return the first palindromic string in the array. If there is no such string, return an empty string "".Example:Input: arr = ...read more

Strings

Remove at most K letter to equalize the frequency

Last Updated: 11 June 2024

Given a string S of length n, consisting of lowercase English letters. The task is to check if it is possible to remove at most K letter from S such that the frequency of ...read more

Count number of times given sentence can be fitted on screen

Last Updated: 11 June 2024

Given a screen with dimensions rows*cols, and a sentence represented as a list of strings. The task is to return the number of times the given sentence can be fitted on th...read more

two-pointer-algorithm

Interview-Questions

Special Ranking Teams by Votes

Last Updated: 14 June 2024

Given an array of strings votes[], representing the voters' rankings. A special ranking system where each voter ranks all teams from highest to lowest. The task is to Sort...read more

String Subsequence and Substring in Python

Last Updated: 22 August 2024

Subsequence and Substring both are parts of the given String with some differences between them. Both of them are made using the characters in the given String only. The d...read more

String to Integer in Different Programming Languages

Last Updated: 24 August 2024

Below are example programs to do string to integer conversion in different programming languages.C++#include bits/stdc++.husing namespace std;int main(){ int val; ch...read more

Find a word with highest number of repeating characters

Last Updated: 08 January 2025

Given a string which contains multiple words, our task is to find the word which has highest number of repeating characters.Examples:Input: str = "hello world programming"...read more

Strings

Hash

DSA

Program to Search a Character in a String

Last Updated: 25 March 2025

Given a character ch and a string s, the task is to find the index of the first occurrence of the character in the string. If the character is not present in the string, r...read more

Strings

DSA

Remove a Character from a Given Position

Last Updated: 13 June 2025

Given a string and a position (0-based indexing), remove the character at the given position.Examples:Input : s = "abcde", pos = 1Output : s = "acde"Input : s = "a", pos...read more

Strings

Data Structures

DSA

String Problems Topic Wise

Last Updated: 07 November 2024

In this post, string problems based on different topics are mentioned. Please refer String Data Structure article for fundamentals, basic operations and problems based on ...read more

Strings

DSA

Longest Common Prefix using Sorting

Last Updated: 14 November 2024

Given an array of stringsarr[],the task is to return thelongest common prefixamong each and every strings present in the array. If there’s no prefix common in all the stri...read more

Longest Common Prefix

Check for Binary String

Last Updated: 23 November 2024

Given a string s, the task is to check if it is a binary string or not. A binary string is a string which only contains the characters '0' and '1'.Examples:Input: s = "010...read more

Strings

DSA

strings

Case Insensitive Search

Last Updated: 03 December 2024

Given two stringstxtandpat, the task is to return all indices of occurrences of pat withintxt, ignoring the letter case (uppercase and lowercase characters are considered ...read more

Python String Coding Practice Problems

Last Updated: 08 April 2025

This collection of Python string coding practice problems is designed to help you learn string manipulation.The following links contain coding problems where you need logi...read more

Strings

Python

Python string-programs

Commonly Asked Data Structure Interview Questions on Strings

Last Updated: 28 February 2025

Strings are essential data structures used to represent sequences of characters and are frequently encountered in coding interviews. Questions often focus on string manipu...read more