James Pan

原题网址：https://leetcode.com/problems/missing-number/ Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example, Given n

原题网址：https://leetcode.com/problems/missing-ranges/ Given a sorted integer array where the range of elements are [lower, upper] inclusive, return its missing ranges. For example, given [0, 1, 3

原题网址：https://leetcode.com/problems/first-missing-positive/ Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3,4,-1,1] retur