Reverse String Using Pointers | Dataford Interview Questions

Write a C program to reverse a string using pointers without using any library functions.

Use two pointers, one at the first character and one at the last character, then swap inward until they meet. The reversal must happen in place. For grading, model the C character array as a mutable list of single-character strings and return the reversed list.

Constraints

0 <= len(chars) <= 10^5
Each element of chars is a single character
The input must be modified in place
Do not use built-in reverse, slicing, or string-reversal functions

Function Signature

def reverse_string(chars):

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Problem

Write a C program to reverse a string using pointers without using any library functions.

Constraints

0 <= len(chars) <= 10^5
Each element of chars is a single character
The input must be modified in place
Do not use built-in reverse, slicing, or string-reversal functions

Function Signature

def reverse_string(chars):

Your question is Reverse String Using Pointers. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.