有一个字符组成的等式：WWWDOT - GOOGLE = DOTCOM，每个字符代表一个0－9之间的数字，WWWDOT、GOOGLE和DOTCOM都是合法的数字，不能以0开头。请找出一组字符和数字的对应关系，使它们互相替换，并且替换后的数字能够满足等式。这个字符等式是Google公司能力倾向测试实验室的一道题目，这种题目主要考察人的逻辑推导能力和短期记忆能力，通常棋下的好的人解决这类问题会更得心应手一些（飞行棋例外）。此类型的题目有很多变种，各种编程比赛中常常能见到它们的身影。比如2005年的GOOGLE中国编程挑战赛第二轮淘汰赛有一道名为“SecretSum”的500分的竞赛题，与本题如出一辙，只不过字母都是三个，而且用的是加法计算。-A character composed of equation: WWWDOT- GOOGLE = Dotcom, each character represents a number between a 0-9, WWWDOT, GOOGLE AND DOTCOM are legitimate numbers, and can not begin with 0. Please find out the correspondence between a group of characters and numbers so that they replace each other, and replacement figures to satisfy the equation. This string equality is a topic of Google' s aptitude test lab, this topic is mainly on the logical derivation of human capacity and short-term memory capacity, and good people usually moves to solve such problems would be more handy some (flight chess exception of ). The subject of this type there are many variants, and a variety of programming the game can often see their shadow. Such as the second round of the 2005 GOOGLE Programming Challenge has one called " SecretSum 500 points race title with the title exactly the same, only the letters are three, but with the addition calculation.