String window test cases

#1

link: https://ide.codingblocks.com/s/324838
2 test cases are giving wrong answer

#2

line 26 should be
if(freq_s[x.first]<x.second)

#3

still test case 2 and 7 are not working. It’s same as before

#4

Your ‘s’ is not capital in “No String”.