pyschools Topic 8: Question 7的题目：给定一个单词，输出字母及字母出现次数 Write a function countLetters(word) that takes in a word as argument and returns a dictionary ...

pyschools Topic 2: Question 9 题目：给定一组整数，获取其个位数之和 Write a function getSumOfLastDigits() that takes in a list of positive numbers and returns the sum ...