1classSolution {2publicintcountTriplets(int[] arr) {3intlen =arr.length;4if(len < 2) {5return0;6}7intres = 0;8for(inti = 0; i < len; i++) {9inttemp =arr[i];10for(intj = i + 1; j < len; j++) {11temp = temp ^arr[j];12if(temp == 0) {13res += j -i;14}15}16}17returnres;18}19} Le...
packageleetcodefunccountTriplets(arr[]int)int{prefix,num,count,total:=make([]int,len(arr)),0,0,0fori,v:=rangearr{num^=v prefix[i]=num}fori:=0;i<len(prefix)-1;i++{fork:=i+1;k<len(prefix);k++{total=prefix[k]ifi>0{total^=prefix[i-1]}iftotal==0{count+...
Number of Triplets A. Number of Triplets time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output You are given n points on a plane. All points are different. Find the nu...[算法与数据结构][array operations][leetcode1460:easy]Make Two Arrays...
【leetcode】1534. Count Good Triplets 题目如下: Given an array of integersarr, and three integersa,bandc. You need to find the number of good triplets. A triplet(arr[i], arr[j], arr[k])is good if the following conditions are true: 0 <= i < j < k < arr.length |arr[i] - ...
nums[i] * nums[j]能被k整除。 示例1: 输入:nums = [1,2,3,4,5], k = 2输出:7解释:共有 7 对下标的对应积可以被 2 整除: (0, 1)、(0, 3)、(1, 2)、(1, 3)、(1, 4)、(2, 3) 和 (3, 4) 它们的积分别是 2、4、6、8、10、12 和 20 。
package LeetCode_1534 /** * 1534. Count Good Triplets * https://leetcode.com/problems/count-good-triplets/ * * Given an array of integers arr, and three integers a, b and c. You need to find the number of good triplets. A triplet (arr[i], arr[j], arr[k]) is good if the ...
In another word, in order to find the number of valid triplets ending in V, we need to sum the contributions from 1 to V - 1 as the middle number. The contribution of each number in [1, V - 1] equals to its count of smaller proceeding numbers. ...
classSolution {public:intcountTriplets(vector<int>&arr) {intn=arr.size(); vector<int> pre(n+1);for(inti=1;i<=n;i++){ pre[i]=pre[i-1]^arr[i-1]; }intres=0; unordered_map<int,int>cnt; unordered_map<int,int>sumofIndex;for(inti=0;i<=n;i++){ ...
【leetcode】1534. Count Good Triplets 题目如下: Given an array of integersarr, and three integersa,bandc. You need to find the number of good triplets. A triplet(arr[i], arr[j], arr[k])is good if the following conditions are true:...
Returnthe number of triplets(i,jandk) Wherea == b. Example 1: Input: arr = [2,3,1,6,7] Output: 4 Explanation: The triplets are (0,1,2), (0,2,2), (2,3,4) and (2,4,4) Example 2: Input: arr = [1,1,1,1,1] ...