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Solution: Contiguous Array

Explore how to solve the contiguous array problem by leveraging hash maps and running prefix counts. Understand the key concepts of counting zeros and ones as -1 and +1, storing earliest count indices, and calculating maximum subarray lengths efficiently in a single pass. This lesson helps you apply hash maps to balance arrays and improve coding interview problem-solving skills.

Statement

You are given a binary array nums containing only 0s0s and 1s1s. Your task is to find the maximum length of a contiguous subarray in which the number of 0s0s and 1s1s is exactly equal.

Return the length of the longest such subarray.

Constraints:

  • 11 \leq nums.length 105\leq 10^5

  • ...