Code Signal_练习题_digitDegree

Posted 2020-12-30 yd2018

Let‘s define digit degree of some positive integer as the number of times we need to replace this number with the sum of its digits until we get to a one digit number.

Given an integer, find its digit degree.

Example

• For n = 5, the output should be
  digitDegree(n) = 0;
• For n = 100, the output should be
  digitDegree(n) = 1.
  1 + 0 + 0 = 1.
• For n = 91, the output should be
  digitDegree(n) = 2.
  9 + 1 = 10 -> 1 + 0 = 1.

 

我的解答：

def digitDegree(n):
    s = 0
    count = 1
    if len(str(n)) == 1:
        return 0
    for i in str(n):
        s += int(i)
    if len(str(s)) == 1:
        return 1
    while s >= 10:
        c = 0
        for i in str(s):
            c = c + int(i)
        s = c
    return count + 1

 

def digitDegree(n):
    d=0
    while n>=10:
        n=sum([int(i) for i in str(n)])
        d+=1
    return d

膜拜大佬