Reverse String

Medium Recursion
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Problem Statement

Write a C++ recursive function that reverses a given string.

Input Format

A single word string S.

Output Format

Print the reversed string.

Constraints

1 <= Length <= 50

Sample Input

hello

Sample Output

olleh

Explanation

Recursively extracts characters from the tail and prepends them.

Starter Code

#include <iostream>
#include <string>

std::string reverseString(std::string s) {
    // Write your code here
}

int main() {
    std::string s;
    if (std::cin >> s) {
        std::cout << reverseString(s) << "n";
    }
    return 0;
}

Limits

  • Time Limit: 1s
  • Memory Limit: 256MB

Embedded C Programming

Updated: March 15, 2026
Intermediate

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