Write a program to reverse a given string.

Question

Accepted Answer

String reversal is a common programming task that involves reversing the order of characters in a given string.

Simple Algorithm: Iterate through the string from the end to the beginning, appending each character to a new string. Example: 'hello' becomes 'olleh'.
Using Built-in Functions: Many programming languages offer built-in functions to reverse strings. For example, in Python: reversed_string = my_string[::-1].
Using Stack Data Structure: Push each character of the string onto a stack and then pop them off to get the reversed string. Example: 'abc' becomes 'cba'.
In-Place Reversal: For languages like C++, you can reverse a string in place by swapping characters from the start and end until you reach the middle.
Handling Edge Cases: Consider empty strings or single-character strings, which should return the same string when reversed.

Accepted Answer

def reverse_string(s):
    return s[::-1]
string = "Hello World"
print(reverse_string(string))

Accepted Answer

s="hello"
print(s[::-1])

Accepted Answer

import java.util.Scanner;

public class StringReversal {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.print("Enter a string: ");

String inputString = scanner.nextLine();

String reversedString = reverseString(inputString);

System.out.println("Reversed string: " + reversedString);

}

public static String reverseString(String inputString) {

String reversedString = "";

for (int i = inputString.length() - 1; i >= 0; i--) {

reversedString += inputString.charAt(i);

}

return reversedString;

}

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