Count number of equal pairs in a string

Here we will first understand how to count number of equal pairs in a String using two methods, then we will write a C++ programs to implement these solutions. Given: A string s Problem: To find the number of equal pairs in the string s. Note: Pairs (s[i], s[j]), (s[j], s[i]), (s[i], s[i]), (s[j], s[j]) should be … Read more