FilesExpand file tree

 master

/

plus_one.py

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

45 lines (38 loc) · 995 Bytes

 master

/

plus_one.py

Copy path

Top

File metadata and controls

• Code
• Blame

45 lines (38 loc) · 995 Bytes

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

# Given a non-negative number represented as an array of digits,

# plus one to the number.

# The digits are stored such that the most significant

# digit is at the head of the list.

def plusOne(digits):

"""

:type digits: List[int]

:rtype: List[int]

"""

digits[-1] = digits[-1] + 1

res = []

ten = 0

i = len(digits)-1

while i >= 0 or ten == 1:

sum = 0

if i >= 0:

sum += digits[i]

if ten:

sum += 1

res.append(sum % 10)

ten = sum / 10

i -= 1

return res[::-1]

def plus_one(digits):

n = len(digits)

for i in range(n-1, -1, -1):

if digits[i] < 9:

digits[i] += 1

return digits

digits[i] = 0

digits.insert(0, 1)

return digits

def plus_1(num_arr):

for idx, digit in reversed(list(enumerate(num_arr))):

num_arr[idx] = (num_arr[idx] + 1) % 10

if num_arr[idx]:

return num_arr

return [1] + num_arr