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solve leetcode Reverse an Array
Learn how to reverse an array efficiently using brute force and optimal approaches in Python and JavaScript.
Oct 1, 2025
solve leetcode find minimum and maximum in an array
Learn how to efficiently find the smallest and largest elements in an array using simple and optimal techniques in Python and JavaScript.
Oct 1, 2025
solve leetcode Rotate an array to the right by k steps
Learn how to rotate an array efficiently using the reverse approach in Python and JavaScript with step-by-step explanation.
Oct 1, 2025
Longest Substring Without Repeating Characters – Sliding Window
Learn how to efficiently find the longest substring with unique characters using sliding window and hashmap in Python and JavaScript.
Sep 23, 2025
Check if a Subarray with Zero Sum Exists – Prefix Sum in Action
Understand how to check for a zero-sum subarray using both brute-force and prefix sum techniques, with step-by-step code in Python and JavaScript.
Jun 26, 2025
Find Pair with Given Sum in an Array – Brute-force and Optimal Approaches
Explore how to find two elements in an array that sum up to a target value using brute-force and hash map techniques in both Python and JavaScript.
Jun 26, 2025