## Problem Statement

Refer to: https://www.hackerrank.com/challenges/encryption/problem

## Solution – Java Program

static String encryption(String s) { int len = s.length(); int row = (int)Math.floor(Math.sqrt(len)); int col = (int)Math.ceil(Math.sqrt(len)); if(row * col < len) row = col; String res = ""; for(int i=0;i<col;i++) { for(int j=i;j<len;j = j+col) { res += s.charAt(j); } res += " "; } return res; }