XOR of ‘x’ with itself odd number of times: (x ^ x ^ x) = (x ^ (x ^ x)) = (x ^ 0) = x (x ^ x ^ x ^ x ^ x) = (x ^ (x ^ x) ^ (x ^ x)) = (x ^ 0 ^ 0) = x 如果我们将所有数组元素与范围内的每个元素进行异或[1, n],即使出现的元素也会相互抵消。我...
Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate number must exist. Assume that there is only one duplicate number, find the duplicate one. Submit your solution:https://leetcode.com/problems/find-the-duplicat...
a reduced number of copies of a segment that appears multiple times in a data set are stored in the storage system along with location information indicating how to reconstruct the original data files in the data set. There are points in the segmenting, transmission, and other processing steps...