第一种是prefix sum + 双指针。 例如Minimum Size Subarray Sum - LeetCode: Given an array of n positive integers and a positive integers, find the minimal length of a contiguous subarray of which the sum ≥s. If there isn't one, return 0 instead. 用O(N)时间得到一个prefix sum array,可...
来自专栏 · LeetCode 题目详解 1 人赞同了该文章 题目描述 给出的数组中只有 0 / 1 ,需要找出一个最长的subarray,包含的0 / 1 的数量相同。 解题思路 最初的设想是使用滑动窗口,但不能解决问题,因为当遍历到数组的一个位置时保存一个后面的指针没有太多的意义。 那如何能解题呢? 需要明白一下的事实,例如...
Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. 题解: 这个题很容易想到复杂度为O(n^2)的暴力方法。看了提示HashMap后想了大概半个小时想到了O(n)的解法。 我的想法是用HasmMap<Integer, Integer> map , Key是从头到index的和,value是早出现该...
m[sum]=i; } }returnres; } }; Github 同步地址: https://github.com/grandyang/leetcode/issues/525 类似题目: Maximum Size Subarray Sum Equals k 参考资料: https://leetcode.com/problems/contiguous-array/ https://leetcode.com/problems/contiguous-array/discuss/99646/Easy-Java-O(n)-Solution-Pre...
Explanation: [0, 1] (or [1, 0]) is a longest contiguous subarray with equal number of 0 and 1. Note: The length of the given binary array will not exceed 50,000. 题目大意:给定一个二值数组,返回含有相同个数的0和1的最长连续子数组的长度。
[leetcode] 525. Contiguous Array Description Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: AI检测代码解析 Input: [0,1] Output: 2 Explanation: [0, 1] is the longest contiguous subarray with equal number of 0 and 1....
LeetCode 525. Contiguous Array 原题链接在这里:https://leetcode.com/problems/contiguous-array/ 题目: Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Input: [0,1] Output: 2...
LeetCode 525. Contiguous Array SubmissionSolutions Contributors:bishwa Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Input: [0,1] Output: 2 Explanation: [0, 1] is the longest contiguous subarray with equal number of 0 and...
[LeetCode] 525. Contiguous Array Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Input:[0,1]Output:2Explanation:[0,1]isthe longest contiguous subarraywithequal numberof0and1....
sum+= (nums[i] == 0 ? -1 : 1);if(map.containsKey(sum)) { ans= Math.max(ans, i -map.get(sum)); }else{ map.put(sum, i); } }returnans; } } Related Problems [LeetCode 560] Subarray Sum Equals K [LeetCode 1371] Find the Longest Substring Containing Vowels in Even Counts ...