python計算字母出現次數

pyschools Topic 8: Question 7的題目：給定一個單詞，輸出字母及字母出現次數 Write a function countLetters(word) that takes in a word as argument and returns a dictionary ...

python獲取一組數個位數之和

pyschools Topic 2: Question 9 題目：給定一組整數，獲取其個位數之和 Write a function getSumOfLastDigits() that takes in a list of positive numbers and returns the sum ...