Reverse the String Problem Statement

You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.

Example:

Input:

STR = "abcde"

Output:

"edcba"

Input:

The first line of input contains a single integer 'T', representing the number of test cases.

Each test case consists of one line containing the string 'STR'.

Output:

For each test case, output the reversed string of 'STR'. Each result must be printed on a new line.

Example:

Input: 2 hello world!

Output: olleh !dlrow

Constraints:

1 ≤ T ≤ 10

1 ≤ |STR| ≤ 10^5, where |STR| is the length of the string STR.

Time limit: 1 second.

Note:

Just implement the function; you do not need to print anything.

Question

You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.

STR = "abcde"

"edcba"

The first line of input contains a single integer 'T', representing the number of test cases.

Each test case consists of one line containing the string 'STR'.

For each test case, output the reversed string of 'STR'. Each result must be printed on a new line.

Input:
2
hello
world!

Output:
olleh
!dlrow

Just implement the function; you do not need to print anything.

Accepted Answer

The task is to reverse a given string containing lowercase letters, uppercase letters, digits, and special characters.

Iterate through the string from the last character to the first character and append each character to a new string.
Alternatively, you can use built-in string reversal functions or methods available in your programming language.
To solve the follow-up question with O(1) space complexity, you can use a two-pointer approach. Initialize two pointers, one at the beginning of the string and the other at the end. Swap the characters at the two pointers and move the pointers towards each other until they meet in the middle.

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