catalysts的博客

Description: Given an array, find the int that appears an odd number of times.There will always be only one integer that appears an odd number of times. 解法一 一般的解法,笨拙的方法,使用Map的性质,先遍历每一个元素,将元素作为key,val...

Your goal in this kata is to implement a difference function, which subtracts one list from another and returns the result. It should remove all values from list a, which are present in list b. array_...