最近偶然碰到的一道题,题目本身解法不难,但属于挺典型的数组问题处理的一种解法。 该题是利用前缀和的技巧判断子数组合法性的。(另外一些常用于判断数组合法性的典型方法有双指针法即尺取,二分枚举区间等。) 题目: 给定一个二进制数组, 找到含有相同数量的 0 和 1 的最长连续 ...
Given a binary array, find the maximum length of a contiguous subarray with equal number of and . Example : Example : Note:The length of the given binary array will not exceed , . 这道题给了我们一个二进制的数组,让找邻 ...
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最近偶然碰到的一道题,题目本身解法不难,但属于挺典型的数组问题处理的一种解法。 该题是利用前缀和的技巧判断子数组合法性的。(另外一些常用于判断数组合法性的典型方法有双指针法即尺取,二分枚举区间等。) 题目: 给定一个二进制数组, 找到含有相同数量的 0 和 1 的最长连续 ...
Given a sorted positive integer array nums and an integer n, add/patch elements to the array such that any number in range [1, n] inclusive can ...
Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. ...
Shuffle a set of numbers without duplicates. Example: 这道题让我们给数组洗牌,也就是随机打乱顺序,那么由于之前那道题Linked List Random Node我们接触到了水塘抽样Reservoir Sampling的思想 ...
Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum ...
For some fixed `N`, an array `A` is *beautiful* if it is a permutation of the integers `1, 2, ..., N`, such that: For every i < j, there is no k ...
An array is *monotonic* if it is either monotone increasing or monotone decreasing. An array A is monotone increasing if for all i <= j, A[i ...
Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your ...