Python Challenges: Takes a string of numbers and letters and return string which consists of letters

Python Challenges - 1: Exercise-51 with Solution

Write a Python program that takes a string of numbers and letters and return string which consists of letters.

Sample Solution:

Python Code:

def decode(str1):
    ints = "1234567890"

    num = ""
    letters = ""
    result_string = ""

    i = 0

    while i < len(str1):
    
        if str1[i] in ints:
            num += str1[i]
              
        else:
            letters += str1[i]

        i += 1

    for i, char in enumerate(num):

        result_string += int(char) * letters[i]

    return result_string
    
print(decode("4A3B2C1D2A"))
print(decode("4A3B2C1D3A"))
print(decode("1P1H1P"))
print(decode("4A3B3C1D2A1B1D4A1C"))  

Sample Output:

AAAABBBCCDAA
AAAABBBCCDAAA
PHP
AAAABBBCCCDAABDAAAAC

Flowchart:

Python Code Editor:

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