LeetCode 344 : Reverse String |
Problem: Reverse String (LeetCode #344)
Approach:
In this solution, we use the two-pointer technique to reverse the string in-place.
The idea is:
Place one pointer at the beginning of the string and another at the end
Swap the characters at both pointers
Move the left pointer forward and the right pointer backward
Continue until both pointers meet
This reverses the string without using extra space
Steps:
1. Initialize two pointers, i and j
2. Set i at the beginning and j at the end of the string
3. While j is greater than i
4. Swap the characters at positions i and j
5. Increment i and decrement j
6. Continue until both pointers meet
7. Return the modified string
Time Complexity:
O(n)
Space Complexity:
O(1)
GitHub:
https://github.com/Nitishkumar0517768
LeetCode Profile:
https://leetcode.com/u/Nitishkumar_05/
LinkedIn:
/ nitish-kumar-03a34a3a1
Notes:
Classic two-pointer approach
In-place solution with constant extra space
Easy to understand and implement
Common interview problem for practicing string manipulation and pointer techniques
#leetcode #cpp #coding #dsa #programming #codecraft #datastructures #datastructureandalgorithm
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