＜No. 9＞ 1805. Number of different integers in the string (simple)

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Title Description ：

 Python Realization ：

Python In one line :

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Title Description ：

Give you a string word , The string consists of numbers and lowercase letters .

Please replace each character that is not a number with a space . for example ,"a123bc34d8ef34" Will become " 123  34 8  34" . Be careful , The remaining integers are （ Adjacent to each other with at least one space ）："123"、"34"、"8" and "34" .

Return to right word Formed after replacement Different The number of integers .

Only if two integers Without leading zeros The decimal representation of is different , I think these two integers are also different .

 Python Realization ：

class Solution(object):
    def numDifferentIntegers(self, word):
        """
        :type word: str
        :rtype: int
        """
        rm_word = re.findall("\d+", word) # "\d+": Match the Numbers , Can be continuous 
        rm_word2 = [a.lstrip('0') for a in rm_word] # Use lstrip() Function removes the leading 0
        set_word = set(rm_word2) #set The assembly can automatically de weight 
        # list_word = list(set_word)  This line can have , But there is no , It doesn't affect the result  return len(list_word)
        return len(set_word)

Python In one line :

class Solution(object):
    def numDifferentIntegers(self, word):
        """
        :type word: str
        :rtype: int
        """


        return len(set(x.lstrip('0') for x in re.findall("\d+", word)))