摘要： 题目如下： On a broken calculator that has a number showing on its display, we can perform two operations: Double: Multiply the number on the display by 2, 阅读全文

摘要： 题目如下： For a non-negative integer X, the array-form of X is an array of its digits in left to right order. For example, if X = 1231, then the array for 阅读全文

摘要： 题目如下： Given an array equations of strings that represent relationships between variables, each string equations[i] has length 4 and takes one of two d 阅读全文