check_if_numbers_are_ascending.py

# A sentence is a list of tokens separated by a single space with no leading or trailing spaces. Every token is either a positive
# number consisting of digits 0-9 with no leading zeros, or a word consisting of lowercase English letters.

# 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.
# Given a string s representing a sentence, you need to check if all the numbers in s are strictly increasing from left to right 
# (i.e., other than the last number, each number is strictly smaller than the number on its right in s).

# Return true if so, or false otherwise.

 

# Example 1:

# example-1
# 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.
# Example 2:

# Input: s = "hello world 5 x 5"
# Output: false
# Explanation: The numbers in s are: 5, 5. They are not strictly increasing.
# Example 3:

# example-3
# Input: s = "sunset is at 7 51 pm overnight lows will be in the low 50 and 60 s"
# Output: false
# Explanation: The numbers in s are: 7, 51, 50, 60. They are not strictly increasing.

class Solution:
    def areNumbersAscending(self, s: str) -> bool:
        first = None
        for word in s.split(" "):
            if word.isdigit():
                if not first:
                    first = int(word)
                else:
                    if first >= int(word):
                        return False
                    else:
                        first = int(word)
        
        return True