简单的Leetcode题目 Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3,4,-1,1] return 2. Your algorithm should run in O(n) time and uses constant space. 1 2 3 4 5 6 7 使用python解决: (1)使用list做(失败): ...
https://github.com/grandyang/leetcode/issues/287 类似题目: First Missing Positive Missing Number Single Number Find All Numbers Disappeared in an Array Set Mismatch Array Nesting Linked List Cycle II 参考资料: https://leetcode.com/problems/find-the-duplicate-number/ https://leetcode.com/problems...
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Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3,4,-1,1] return 2. Your algorithm should run in O(n) time and uses constant space. 解题之法 class Solution{public:intfirstMissingPositive(intA[],intn){inti=0;while...
也可以采用First Missing Positive中swap的方法,把nums[i] swap到 index = nums[i]的位置上. 第二遍扫描时如果出现了i != nums[i]时,就是nums[i]是duplicate. Time Complexity: O(nums.length). Space: O(1). AC Java: 1classSolution {2publicintfindDuplicate(int[] nums) {3for(inti = 0; i<...
LeetCode() Find the Duplicate Number Given an arraynumscontainingn+ 1 integers where each integer is between 1 andn(inclusive), prove that at least one duplicate number must exist. Assume that there is only one duplicate number, find the duplicate one....
between the first two elements of the array (i.e.arr[0]andarr[1]). In each round of the game, we comparearr[0]witharr[1], the larger integer wins and remains at position0and the smaller integer moves to the end of the array. The game ends when an integer winskconsecutive rounds...