Python – Index Frequency Alphabet List
Create a String list with each character repeated as much as its position number.
Method #1 : Using ascii_lowercase + ord() + loop
In this, task of getting index is done using ord(), and ascii lowecase() is used for extracting alphabets. Loop is used to perform task for each letter.
Python3
# Python3 code to demonstrate working of # Index Frequency Alphabet List # Using ascii_lowercase + ord() + loop from string import ascii_lowercase # extracting start index strt_idx = ord('a') - 1 res = [] for ele in ascii_lowercase: # multiplying Frequency res.append(ele * (ord(ele) - strt_idx)) # printing result print("The constructed list : " + str(res)) |
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Output
The constructed list : ['a', 'bb', 'ccc', 'dddd', 'eeeee', 'ffffff', 'ggggggg', 'hhhhhhhh', 'iiiiiiiii', 'jjjjjjjjjj', 'kkkkkkkkkkk', 'llllllllllll', 'mmmmmmmmmmmmm', 'nnnnnnnnnnnnnn', 'ooooooooooooooo', 'pppppppppppppppp', 'qqqqqqqqqqqqqqqqq', 'rrrrrrrrrrrrrrrrrr', 'sssssssssssssssssss', 'tttttttttttttttttttt', 'uuuuuuuuuuuuuuuuuuuuu', 'vvvvvvvvvvvvvvvvvvvvvv', 'wwwwwwwwwwwwwwwwwwwwwww', 'xxxxxxxxxxxxxxxxxxxxxxxx', 'yyyyyyyyyyyyyyyyyyyyyyyyy', 'zzzzzzzzzzzzzzzzzzzzzzzzzz']
Method #2 : Using list comprehension + ascii_lowercase + ord()
In this, list comprehension is used to solve this problem. This is shorthand of above method.
Python3
# Python3 code to demonstrate working of # Index Frequency Alphabet List # Using list comprehension + ascii_lowercase + ord() from string import ascii_lowercase # extracting start index strt_idx = ord('a') - 1 # list comprehension to solve as one liner res = [ele * (ord(ele) - strt_idx) for ele in ascii_lowercase] # printing result print("The constructed list : " + str(res)) |
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Output
The constructed list : ['a', 'bb', 'ccc', 'dddd', 'eeeee', 'ffffff', 'ggggggg', 'hhhhhhhh', 'iiiiiiiii', 'jjjjjjjjjj', 'kkkkkkkkkkk', 'llllllllllll', 'mmmmmmmmmmmmm', 'nnnnnnnnnnnnnn', 'ooooooooooooooo', 'pppppppppppppppp', 'qqqqqqqqqqqqqqqqq', 'rrrrrrrrrrrrrrrrrr', 'sssssssssssssssssss', 'tttttttttttttttttttt', 'uuuuuuuuuuuuuuuuuuuuu', 'vvvvvvvvvvvvvvvvvvvvvv', 'wwwwwwwwwwwwwwwwwwwwwww', 'xxxxxxxxxxxxxxxxxxxxxxxx', 'yyyyyyyyyyyyyyyyyyyyyyyyy', 'zzzzzzzzzzzzzzzzzzzzzzzzzz']
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