Sometimes we need to replace whole word with the word boundaries in a string. For this we use "\b" regular expression token which is called a word boundary. It usually matches at the start or the end ...

Capitalize the First and Last letter Today we will look at java program, we’re going to capitalize all the first and last character of the words in a string. Lets understand with the help of an ...

Given a string with lowercase letters only, if you are allowed to replace no more than ‘k’ letters with any letter, find the length of the longest substring having the same letters after replacement.