Can you solve this real interview question? Count Number of Nice Subarrays - Given an array of integers nums and an integer k. A continuous subarray is called nice if there are k odd numbers on it. Return the number of nice sub-arrays. Example 1:
Subarrays with K Different Integers Fruit Into Baskets Shortest Subarray with Sum at Least K Minimum Size Subarray Sum Subarray Sum Equals K 参考资料: https://leetcode.com/problems/count-number-of-nice-subarrays/ https://leetcode.com/problems/count-number-of-nice-subarrays/discuss/419483/Subarr...
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. Example 1: Input:nums = [1,1...
方法二 Leetcode 1248 问题描述 Given anarrayofintegers numsandanintegerk. A subarrayiscallednice if therearek odd numbersonit.Returnthe numberofnice sub-arrays. 例子 Example 1:Input:nums=[1,1,2,1,1],k=3Output:2Explanation:Theonlysub-arrayswith3oddnumbersare[1,1,2,1]and[1,2,1,1].Ex...
828. Count Unique Characters of All Substrings of a Given String # 题目 # Let’s define a function countUniqueChars(s) that returns the number of unique characters on s, for example if s = "LEETCODE" then "L", "T","C","O","D" are the unique characters
A set of practice note, solution, complexity analysis and test bench to leetcode problem set - leetcode/CountSubArrayFixBound.drawio at b58bcceb0ea27d0756ad72fb6a64b3b547fae221 · brianchiang-tw/leetcode
1370-count-number-of-nice-subarrays 1387-find-elements-in-a-contaminated-binary-tree 1393-maximum-value-of-k-coins-from-piles 1394-minimum-path-cost-in-a-grid 1402-count-square-submatrices-with-all-ones 1408-find-the-smallest-divisor-given-a-threshold 1415-students-and-examinations 1431-all-a...
public int numSubarraysWithSum(int[] nums, int goal) { // 滑动窗口(容斥原理,同1248) // 和为goal的连续子数组的数量。// 「和恰好为goal的子数组数量」=「和最多为goal的子数组数量」-「和最多为goal-1的子数组数量」 return atMost(nums, goal) - atMost(nums, goal - 1); }...
publicintnumberOfSubarrays(int[] nums,intk){ intres=0; intn=nums.length; intsum=0; HashMap<Integer, Integer> map =newHashMap<>(); map.put(0,1); for(inti=0; i < n; i++) { sum += nums[i] %2==1?1:0; map.put(sum, map.getOrDefault(sum,0) +1); ...
题目如下: Given an array of integersnumsand an integerk. Asubarray is called nice if there arekodd numbers on it. Return the number of nice sub-arrays. Example 1: Input: nums = [1,1,2,1,1], k = 3 Output: 2 Explanation: The only sub-arrays with 3 odd numbers are [1,1,2,...