Program to check if a String in Java contains only whitespaces
Given a string str, the task is to check if this string contains only whitespaces or some text, in Java. Examples: Input: str = “… Read More »
Category Archives: Strings
Program to check if the String is Null in Java
Given a string str, the task is to check if this string is null or not, in Java. Examples: Input: str = null Output: True… Read More »
Program to check if the String is Empty in Java
Given a string str, the task is to check if this string is empty or not, in Java. Examples: Input: str = “” Output: True… Read More »
Check if one string can be converted to another
Given two strings str and str1, the task is to check whether one string can be converted to other by using the following operation: Convert… Read More »
Jaro and Jaro-Winkler similarity
Jaro Similarity Jaro Similarity is the measure of similarity between two strings. The value of Jaro distance ranges from 0 to 1. where 1 means… Read More »
Number of binary strings such that there is no substring of length ≥ 3
Given an integer N, the task is to count the number of binary strings possible such that there is no substring of length ≥ 3… Read More »
First substring whose reverse is a word in the string
Given a space-separated string str, the task is to find the first substring whose reverse is a word in the string. All characters of the… Read More »
Program to check the validity of a Password
Password checker program basically checks if the password is valid or not based on password policies mention below: Password should not contain any space. Password… Read More »
Parsing String of symbols to Expression
Given an expression as a string str consisting of numbers and basic arithmetic operators(+, -, *, /), the task is to solve the expression. Note… Read More »
Check if a word is present in a sentence
Given a sentence as a string str and a word word, the task is to check if the word is present in str or not.… Read More »
Minimum number of swaps to make two binary string equal
Given two binary strings of equal length, the task is to find the minimum number of swaps to make them equal. Swapping between two characters… Read More »
Print characters and their frequencies in order of occurrence using Binary Tree
Given a string str containing only lowercase characters. The problem is to print the characters along with their frequency in the order of their occurrence… Read More »
Find the resultant String after replacing X with Y and removing Z
Given a string str, the task is to replace all occurrences of the given X with given Y and also remove any occurrances of the… Read More »
Check if all bits can be made same by flipping two consecutive bits
Given a binary string, the task is to find whether all the digits of the string can be made equal i.e either 0 or 1… Read More »
Maximize the number of palindromic Strings
Given N binary strings b1, b2, b3…. bn. The task is to find the maximum number of binary strings that you can make palindromic by… Read More »
