Task: Given a string, Find the run length encoded string for given string. Example: 1 aaaabbbccc Output: a4b3c3 Here is the Code: Program in C++: #include<iostream> #include<bits/stdc++.h> using namespace std; char *encode(char *src) { int c=0; for(int i=0;src[i]!='\0';i++) { if(c==0) { cout<<src[i]; c++; } else if(src[i-1]==src[i]) { c++; } else { cout<<c; c=1; cout<<src[i]; } } cout<<c; return "\0"; } int main() { int T; cin>>T; while(T--) { char str[10000]; cin>>str; cout<<encode(str)<<endl; } return 0; } Here is the Video: