Missing Number Problem

Missing Number Problem — ExecCode Easy DSA Practice

Solve the Missing Number problem on ExecCode. Free online easy DSA practice in Arrays - Basics. Write and run code in Java, C++, Python — no signup required to run.

Problem description

Missing Number: XOR all indices and values. For Missing Number, focus on the exact input variables, return only the requested value, and preserve the required time complexity for the intended pattern.

Examples

Input nums = [3, 0, 1]; Output 2

Constraints

1 ≤ n ≤ 10^5 Values fit in 32-bit ints

Practice Missing Number free on ExecCode. Browse DSA problems, topic map, and placement guides.