Python: Find the longest common prefix string amongst a given array of strings

Python Basic - 1: Exercise-70 with Solution

Write a Python program to find the longest common prefix string among a given array of strings. Return false if there is no common prefix.
For Example, longest common prefix of "abcdefgh" and "abcefgh" is "abc".

Sample Solution:

Python Code:

def longest_Common_Prefix(str1):
    
    if not str1:
        return ""

    short_str = min(str1,key=len)

    for i, char in enumerate(short_str):
        for other in str1:
            if other[i] != char:
                return short_str[:i]

    return short_str 

print(longest_Common_Prefix(["abcdefgh","abcefgh"]))
print(longest_Common_Prefix(["w3r","w3resource"]))
print(longest_Common_Prefix(["Python","PHP", "Perl"]))
print(longest_Common_Prefix(["Python","PHP", "Java"]))

Sample Output:

abc
w3r
P

Pictorial Presentation:

Flowchart:

Python Code Editor:

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