565. Reverse a String Using Stack

EasyStack Stack String

Given a string s, return the string reversed. (Conceptually, push every character onto a stack and pop them to build the reversed string.) The input is JSON {s}.

Input: JSON {s}.

Output: String — the reversed string.

Examples

Example 1

Input: {"s":"hello"}
Output: olleh
Explanation: Characters popped in reverse order.

Example 2

Input: {"s":""}
Output: 
Explanation: Empty stays empty.

Example 3

Input: {"s":"ab"}
Output: ba
Explanation: Two characters swapped.

Constraints

0<=|s|<=10^5

Asked by

TCS Infosys Wipro Cognizant Capgemini

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