将给定的字符串转换为T，通过任意次数替换字符串之间的字符

Input 1: arr = [ “wxyz”, “wxxy”, “wyzz” ], T = “wxyz”

Output 1: YES

Input 2: arr = [ “rts”, “rtw”, “rts” ], T = “rts”

Output 2: NO

freqArr.size() == freqT.size()

freqArr.find(T[i]) == freqArr.end() and 
freqArr[T[i]] != freqT[T[i]]*N.

// Program to convert all strings to T
#include <bits/stdc++.h>
using namespace std;
string covertStringIntoT( int N, string arr[], string T){
   map< char,int > freqT; //to store the frequency of each character of string T
   int len = T.size(); //getting the size of the string T 
   
   //traverse the string T to store the frequency of the characters
   for( int i=0; i<len; i++){
      freqT[T[i]]++;
   }
   map< char,int > freqArr; //to store the frequency of each chracter of strings 
   
   // of Array.
   //traverse the strings of Array to store the frequency of the characters
   for( int i=0; i<N; i++){
      for(int j=0;j<arr[i].size(); j++){
         freqArr[arr[i][j]]++;
      }
   }
   
   // Check the condition one
   if(freqT.size() != freqArr.size()){
      return "NO";
   }    
   
   //check condition two while trversing the string T
   for( int i=0; i<len; i++){
      if(freqArr.find(T[i]) == freqArr.end() || freqArr[T[i]] != freqT[T[i]]*N ){
         return "NO";
      }
   }
   return "YES";
}
int main() {    
   string T = "wxyz"; // given string
   string arr[] = {"wxyz", "wxyy", "wxzz"}; // given array of strings
   int N = sizeof(arr) / sizeof(arr[0]); //getting the size of the array of string 
   
   // calling the function 'convertStringIntoT' to convert all strings of the 
   
   // array into string T
   string result = covertStringIntoT( N, arr, T);
   if(result == "YES"){
      cout<< result << ", it is possible to make all the strings of the array as string T";
   }
   else{
      cout<< result << ", it is not possible to make all the strings of the array as string T"; 
   }
   return 0;
}

YES, it is possible to make all the strings of the array as string T