1 <= nums[i] <= n All the integers innumsappear only once except for precisely one integer which appears two or more times. Follow up: How can we prove that at least one duplicate number must exist innums? Can
1 <= nums[i] <= n All the integers in nums appear only once except for precisely one integer which appears two or more times. Follow up: How can we prove that at least one duplicate number must exist in nums? Can you solve the problem in linear runtime complexity? 寻找重复数。 给定...
https://leetcode.com/problems/find-the-duplicate-number/description/ 287. Find the Duplicate Number Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate number must exist. Assume that there is only one duplicate ...
[LeetCode]287. Find the Duplicate Number Medium Given an array of integersnumscontainingn + 1integers where each integer is in the range[1, n]inclusive. There is only one duplicate number innums, returnthis duplicate number. Follow-ups: How can we prove that at least one duplicate number ...
Difficulty: Easy Related Topics: Array, Two Pointers, Binary Search Link: https://leetcode.com/problems/find-the-duplicate-number/ Description Given a
package LeetCode_287 /** * 287. Find the Duplicate Number * https://leetcode.com/problems/find-the-duplicate-number/description/ * * Given an array of integers nums containing n + 1 integers where each integer is in the range [1, n] inclusive. There is only one duplicate number in ...
[LeetCode OJ] Single Number之一 ——Given an array of integers, every element appears twice except for one. Find that single one.1 class Solution { 2 public: 3 int singleNumber(int A[], int n) { 4 int i,j; 5 for(i=0; i<n; i++) 6 { 7 for(j=i+1; j<n; j++) 8 {...
Let’s try the top-down approach where we traverse the nodes from the top to the bottom. First, if the current node is one of the two nodes, it must be the LCA of the two nodes. If not, we count the number of nodes that matches either p or q in the left subtree (which we ...