[LeetCode]#2042. Check if Numbers Are Ascending in a Sentence

  • For example, "a puppy has 2 eyes 4 legs" is a sentence with seven tokens: "2" and "4" are numbers and the other tokens such as "puppy" are words.
Input: s = "1 box has 3 blue 4 red 6 green and 12 yellow marbles"
Output: true
Explanation: The numbers in s are: 1, 3, 4, 6, 12.
They are strictly increasing from left to right: 1 < 3 < 4 < 6 < 12.
  1. Use split to get each word such as “1”, “box”….
  2. Use isdecimal to judge it is number or not.
  3. If yes, add it to list. If not, skip it.
  4. If list[t] ≥ list[t+1], return False. Else, return True.
class Solution:
def areNumbersAscending(self, s):
for s in s.split():
if not s.isdecimal():
for i in range(len(ans)-1):
if ans[i]>=ans[i+1]:
return False

return True

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