https://leetcode.com/problems/kth-largest-element-in-an-array/ 题目: kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. For example
kis in the range[1, the number of unique elements in the array]. It is guaranteed that the answer is unique. Follow up: Your algorithm's time complexity must be better thanO(n log n), where n is the array's size. Ideas: 1. 利用collections.Counter(), 得到num: countNum 的dictionary...
题目:Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: The solution set must not contain duplicate triplets. For example, given array S = [-1, 0, 1, 2, -...
*442. Find All Duplicates in an Array 思路一:使用数组下标标记,所以现在把数组下标,当成数组中的元素,如果下标对应的value为正数,表示出现了偶数次,为负数表示出现了奇数次 所以,可以遍历一遍数组,然后根据数组中,值对应的数组元素是正数还是负数,把偶数的元素搞出来,在使用set做下去重,最后输出array 思路二:思路...
215 Kth Largest Element in an Array // #215 数组中第k大的元素 描述:如题。 // #215 Description: Kth Largest Element in an Array | LeetCode OJ 解法1:你能手写快速排序吧?面试经常考哦。稍加修改就变成快速选择算法了。用此算法可以找出第k小元素。 // Solution 1: Can you write by Quick Sor...
27. Remove Element Given an array nums and a value val, remove all instances of that value in-place and return the new length.Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory. 题目要求:这道题让我们移除一个数...
com/problems/kth-largest-element-in-an-array/https://leetcode.com/problems/kth-smallest-element-...
Input: array = [-1,0,3,5,9,12], target = 2 Output: -1 Explanation: 2 does not exist in nums so return -1 1. 2. 3. Note: You may assume that all elements in the array are unique. The value of each element in the array will be in the range [-9999, 9999]. ...
Find K-th Element 215.Kth-Largest-Element-in-an-Array (M) 287.Find-the-Duplicate-Number (H-) 378.Kth-Smallest-Element-in-a-Sorted-Matrix (H-) 373.Find-K-Pairs-with-Smallest-Sums (H) 668.Kth-Smallest-Number-in-Multiplication-Table (H-) 719.Find-Kth-Smallest-Pair-Distance (H-) 191...
0215 Kth Largest Element in an Array Go 55.3% Medium 0216 Combination Sum III Go 56.5% Medium 0217 Contains Duplicate Go 56.0% Easy 0218 The Skyline Problem Go 34.5% Hard 0219 Contains Duplicate II Go 37.7% Easy 0220 Contains Duplicate III Go 20.9% Medium 0221 Maximal Square 37.7...