tomatocream
1dec88aaf2
Add populate-notes.mjs that fetches problem descriptions and Python/C++ code stubs from LeetCode's GraphQL API. Populated all 197 NeetCode 150 note files with: - Problem description (examples, constraints) - Python code stub (function signature) - C++ code stub (function signature + includes) API responses cached in leetcode/.cache/leetcode/ for instant re-runs.
999 B
999 B
TODO 0136. Single Number easy
Given a non-empty array of integers nums, every element appears twice except for one. Find that single one.
You must implement a solution with a linear runtime complexity and use only constant extra space.
Example 1:
Input: nums = [2,2,1]
Output: 1
Example 2:
Input: nums = [4,1,2,1,2]
Output: 4
Example 3:
Input: nums = [1]
Output: 1
Constraints:
1 <= nums.length <= 3 * 10^{4}-3 * 10^{4} <= nums[i] <= 3 * 10^{4}- Each element in the array appears twice except for one element which appears only once.
TODO Approach
Write your approach here.
TODO Python
class Solution:
def singleNumber(self, nums: List[int]) -> int:TODO C++
class Solution {
public:
int singleNumber(vector<int>& nums) {
}
};