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 of all the last digits in the list.
def getSumOfLastDigits(numList):
return sum(x % 10 for x in numList)
getSumOfLastDigits([1, 23, 456])
Out[11]: 10