leetcode-222-Counter Complete Binary Tree Nodes - binary search 1 -- 10:00 App leetcode-852. Peak Index in a Mountain Array -binary-search 90 -- 9:28 App leetcode-508. Most Frequent Subtree Sum - Recursion 27 -- 9:42 App leetcode-2785. Sort Vowels in a String - sort 4 -...
查找右index时,选择查找target右边的第一个index,即target最后一次出现位置+1,所以在主程序里对返回结果-1。 https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/solution/ View Python Code
classSolution{publicint[]searchRange(int[]nums,inttarget){int[]result={-1,-1};if(nums==null||nums.length==0)returnresult;//1. search for first positionintstart=0;intend=nums.length-1;while(start+1<end){intmiddle=start+(end-start)/2;if(target<=nums[middle]){end=middle;}else{start...
vector<int>searchRange(vector<int>&nums,inttarget){vector<int>result;inta=-1,b=-1;vector<int>::iterator iter;intcount=-1;for(iter=nums.begin();iter!=nums.end();iter++){count++;if(a==-1&&*iter==target){a=count;b=count;continue;}if(a==-1)continue;if(*iter==target)b=count;}...
Description:Given an array of integersnumssorted in ascending order, find the starting and ending position of a giventargetvalue. Iftargetis not found in the array, return[-1, -1]. Follow up:Could you write an algorithm withO(log n)runtime complexity?
3. Code: 1/2 2/2 3.1. Explaination of the Code: Initialization Check: Checkif not numsto immediately return[-1, -1]if the input array is empty. Validity Check: Ensurestartandendare within the valid bounds of the array and thatnums[start]andnums[end]actually match the target value. If...
LeetCode 387: 字符串中的第一个唯一字符 First Unique Character in a String 题目: 给定一个字符串,找到它的第一个不重复的字符,并返回它的索引。如果不存在,则返回 -1。 Given a string, find the first non-repeating character in it and return it’s index. If it doesn’t exist, return -1. ...
java_leetcode题解之034_Find_First_and_Last_Position_of_Element (0)踩踩(0) 所需:1积分 RQJ0480FQDQS-VB一款N-Channel沟道TO252的MOSFET晶体管参数介绍与应用说明 2024-12-20 18:37:50 积分:1 RQJ0479FQDQS-VB一款N-Channel沟道TO252的MOSFET晶体管参数介绍与应用说明 ...
1) Code: // 方案3 “二分查找” // 参考: // 1)https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array/solution/zai-pai-xu-shu-zu-zhong-cha-zhao-yuan-su-de-di-3-4/ const binarySearch = (nums, target, lower) => { let left = 0, right = num...
Rust is a supported language on LeetCode. For every problem on LeetCode you get a solution template which usually contains a single unimplemented function which you then have to implement and submit in order to solve the problem. For more involved problems the solution template might include a ...