【机器学习300问】12、为什么要进行特征归一化？

分类：字符串

知识点：

1. 获取输入 input().strip().split(" ")

2. 拼接列表 " ".join(list)

3. 输出指定位数的浮点数 print("%.2f" % value)

题目来自【华为招聘模拟考试】

# If you need to import additional packages or classes, please import here.

def func():

    # please define the python3 input here. For example: a,b = map(int, input().strip().split())
    words = input().strip().split(" ")
    # please finish the function body here.
    total_words = len(words)
    new_str = "".join(words)
    total_length = len(new_str)
    # please define the python3 output here. For example: print().
    # print(round(total_length/total_words, 2)) # round有bug
    print("%.2f" % (total_length/total_words))

if __name__ == "__main__":
    func()

注意，不要使用round，有bug

by: 软件工程小施同学