Given two strings, find if first string is a subsequence of second

Given two strings str1 and str2, find if str1 is a subsequence of str2. A subsequence is a sequence that can be derived from another sequence by deleting some element...

Perfect Sum Problem (Print all subsets with given sum)

Given an array of integers and a sum, the task is to print all subsets of given array with sum equal to given sum. Examples: Input : arr[] = {2, 3, 5, 6, 8, 10} ...