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 ...
For some fixed N , an array A is beautiful if it is a permutation of the integers , , ..., N , such that: For everyi lt j, there isnokwithi lt k lt jsuch thatA k A i A j . GivenN, returnanybeautiful ...
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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 a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Example 2: Note ...
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 ...
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 ...
A zero-indexed array A of length N contains all integers from 0 to N-1. Find and return the longest length of set S, where S[i] = {A[i], A[A[i ...