Discussion 2: Leetcode!

Discussion 2: Thursday, May 28, 2026.

This discussion section works through Leetcode-style programming exercises in Rust.

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Part 1: Missing Number

Solve the Missing Number problem on Leetcode.

Hint: consider using a HashMap or a HashSet!

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Part 2: Kth Largest Number

Solve the Kth Largest Element in an Array problem on Leetcode.

Consider using a BinaryHeap — a data structure that allows you to insert and remove elements by their relative order. Here is an example of how to use it.

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