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Jun 26, 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.

#algorithms#arrays#prefixsum
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.

#algorithms#arrays#hashmap