importjava.util.*;classSolution{publicintsubarraysWithKDistinct(int[] A,intK){ HashMap<Integer,Integer> map =newHashMap<>();intflag=0;intsum=0;inti=0,j =0;intaddFlag=0;while(j<A.length){if(map.containsKey(A[j])&
1classSolution {2publicintsubarraysWithKDistinct(int[] A,intK) {3returnhelper(A, K) - helper(A, K - 1);4}56privateinthelper(int[] A,intK) {7intstart = 0;8intend = 0;9intres = 0;10HashMap<Integer, Integer> map =newHashMap<>();11while(end <A.length) {12if(map.getOrDef...
若能分别求出最多有K个奇数的子数组的个数,和最多有 K-1 个奇数的子数组的个数,二者相减,就是正好有K个奇数的子数组的个数。 我们之前做过这样一道题目 Subarrays with K Different Integers,这里采用几乎完全一样的思路。由于要同时求K和 K-1 的情况,所以可以用个子函数来做。在 atMost...
Given an integer array nums and an integer k, return the number of good subarrays of nums. A good array is an array where the number of different integers in that array is exactly k. For example, [1,2,3,1,2] has 3 different integers: 1, 2, and 3. A subarray is a contiguous ...
0989. Add to Array Form of Integer 0990. Satisfiability of Equality Equations 0991. Broken Calculator 0992. Subarrays With K Different Integers 0993. Cousins in Binary Tree 0995. Minimum Number of K Consecutive Bit Flips 0996. Number of Squareful Arrays 0997. Find the Town Judge 0999. Availab...
Given an integer arraynumsand an integerk, returnthe number ofgoodsubarrays ofnums. A subarrayarrisgoodif there areat leastkpairs of indices(i, j)such thati < jandarr[i] == arr[j]. Asubarrayis a contiguousnon-emptysequence of elements within an array. ...
Learn how to find all subarrays of a given array in Java with this comprehensive guide, including examples and explanations.
Learn how to find the largest sum of subarrays in JavaScript with step-by-step examples and explanations.
leetcode 560. Subarray Sum Equals K technically, no different with two sum...[leetcode] 560. Subarray Sum Equals K Description Given an array of integers and an integer k, you need to find the total number of continuous subarrays whose sum equals to k. Example 1: Input: Output: ...
Hi there, Codeforces community! This question has been bugging me for a while now, so I thought I would share it with you, and see if we can work out the answer together. The problem is the following:given an array ofninteger numbers (positive and negative), find a (contiguous) subarr...