pepcoding.com 21/10/2021 printSubsequence

code.cpp

#include <iostream>
using namespace std;

void printSS(string ques, string ans) {
    if(ques.length() == 0) {  // base case
        cout << ans << endl;  // printing ans string
        return;
    }
    
    printSS(ques.substr(1), ans + ques[0]); //recursive call including first character in ans string
    printSS(ques.substr(1), ans); //recursive call excluding first character in ans string
}

int main() {
    string str; // string str declaration
    cin >> str; // input 
    
    printSS(str, "");  // function call passing input string and an empty string for output.
}

snippet.cpp

#include <iostream>
using namespace std;

void printSS(string ques, string ans) {
    // write your code here
  
}

int main() {
    string str; // string str declaration
    cin >> str; // input 
    
    printSS(str, "");  // function call passing input string and an empty string for output.
}