warmup_2_string_explosion.py

# Given a non-empty string like "Code" return a string like "CCoCodCode".

# string_splosion('Code') → 'CCoCodCode'
# string_splosion('abc') → 'aababc'
# string_splosion('ab') → 'aab'

def string_splosion(str):
    result = ''
    for i in range(len(str)):
        result = result + str[:i+1]
    return result