LeetCode 84 | Largest Rectangle in Histogram (Part 1) #leetcode #dsa #codingwithyash

This one’s a hard problem and requires a lot of patience and focus.

Problem statement:

We are given an array of heights, and we need to find the area of the largest rectangle that can be formed inside the histogram.

In this part, we’re solving it with a brute-force approach:

✅ Approach:

For every bar we expand to the left and right as long as the bars are greater than or equal to the current one.

Once we find boundaries on both sides, we calculate the width.

Then simply multiply width × current height to get the area.

Keep track of the maximum area and at the end we will return the maxArea.

Time Complexity: O(n²)

This method works, but it’s not optimal and may fail for large inputs due to TLE.

In Part 2, we’ll cover the stack-based approach that solves this in O(n) time and it’s what most interviewers expect.

If you understood the approach please do subscribe to my channel for more such DSA concepts.

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Видео LeetCode 84 | Largest Rectangle in Histogram (Part 1) #leetcode #dsa #codingwithyash канала CodingWithYash