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287: Find the Duplicate Number Link : https://leetcode.com/problems/find-the-duplicate-number/solution/ 1. 문제 Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive.You must solve the problem without modifying the array nums and uses only constant extra space. There is only one repeated number in nums, return this repeated number. 2. 문제의 조건 1 2021. 8. 5.
128: Longest Consecutive Sequence Link : https://leetcode.com/problems/longest-consecutive-sequence/ 1. 문제 Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence. You must write an algorithm that runs in O(n) time. 2. 문제의 조건 0 2021. 8. 5.
46: PERMUTATIONS Link : https://leetcode.com/problems/permutations/ 1. 문제 Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order. Example 1:Input: nums = [1,2,3] Output: [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]] Example 2:Input: nums = [0,1] Output: [[0,1],[1,0]] Example 3:Input: nums = [1] Output: [[1]] 2. 문제의 조건 1 2021. 8. 5.

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