268. Missing Number

@tozy.zard

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LeetLockinseen in 6 videos →https://www.leetlockin.com/ ↗

Why it worked

The video leverages the popularity of LeetCode and software engineering content on TikTok. By providing a solution to a common coding problem, it attracts users interested in this niche. The subtle promotion of an AI tutor for LeetCode through the creator's bio link aligns with the content, making it a native and potentially effective way to reach the target audience.

Summary

The video explains how to find the missing number in an array of distinct numbers from 0 to n. It demonstrates a Python solution using a loop to sum the expected range and then subtract the actual numbers present in the array.

Structure

1Introduce the problem: Missing Number on LeetCode.
2Explain the problem statement and constraints.
3Start coding the solution in Python.
4Calculate the sum of the expected range (0 to n).
5Subtract the sum of the numbers present in the array.
6

Original caption

wait lowk give me good problems #leetcode #neetcode #python #softwareengineer

More from @tozy.zard

Their other posts in the index, biggest breakout first.

Return the final result.

Product placement

The video shows a LeetCode problem and then proceeds to code a solution in Python. The creator's bio link, which is for 'LeetLockin: AI Tutor for LeetCode Patterns & Interview Prep', is displayed, indicating the product being promoted is an AI tutor for LeetCode.

On-screen text

268. Missing Number Easy Topics Companies Given an array nums containing n distinct numbers in the range [0, n], return the only number in the range that is missing from the array. Example 1: Input: nums = [3,0,1] Output: 2 Explanation: n = 3 since there are 3 numbers, so all numbers are in the range [0,3]. 2 is the missing number in the range since it does not appear in nums. Example 2: Input: nums = [0,1] Output: 2 Explanation: n = 2 since there are 2 numbers, so all numbers are in the range [0,2]. 2 is the missing number in the range since it does not appear in nums. 13.8K 360 360 268. Missing Number SO GIVEN ARRAY OF NUMS CONTAINING N DISTINCT NUMBERS OF 0 TO N, RETURN THE ONLY NUMBER IN THE MISSING FROM THE ARRAY. Code Python3 Auto class Solution: def missingNumber(self, nums: List[int]) -> int: result = 0 for i in range(len(nums)); result = result + i + 1 for i in nums: result = result - i return result RESULTS IS GONNA STORE THE OUTPUT. SO FOR I AND RANGE LENGTH SO WE'RE GONNA GO THROUGH AND SUBTRACT THE TOTAL VALUE IT CAN BE FIRST. SO DO RESULTS EQUALS RESULTS PLUS I PLUS 1, CAUSE IT'S GONNA BE OFFSET BY 1. AND THEN WE WANNA GO THROUGH AND THEN SUBTRACT FOR I AND NUMS, DO RESULTS EQUALS RESULT MINUS I. AND THEN IF WE RETURN RESULTS, THE FINAL VALUE WHAT'S LEFT. SO RETURN RESULT.

Transcript

LeetCode lock in, missing number. So given array of nums containing n distinct numbers in the range of 0 to n, return the only number in the range that is missing from the array. Results is gonna store the output. And let's just so for i in range length of nums. So we're gonna go through and subtract the total value it can be first. So do result equals result plus i plus 1, cause it's gonna be offset by 1. And then we wanna go through and subtract for i and nums, do result equals result minus i. And then if we return results, the final value what's left. So return result.