Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
For loop solution in Clear category for Letter Queue by kudinov.feodor
from typing import List
def letter_queue(commands: List[str]) -> str:
# your code here
res = ""
for c in commands:
res = res[1:] if c == "POP" else res + c.split()[1]
return res
if __name__ == '__main__':
print("Example:")
print(letter_queue(['PUSH A',
'POP',
'POP',
'PUSH Z',
'PUSH D',
'PUSH O',
'POP',
'PUSH T']))
# These "asserts" are used for self-checking and not for an auto-testing
assert letter_queue(['PUSH A',
'POP',
'POP',
'PUSH Z',
'PUSH D',
'PUSH O',
'POP',
'PUSH T']) == 'DOT'
assert letter_queue(['POP', 'POP']) == ''
assert letter_queue(['PUSH H', 'PUSH I']) == 'HI'
assert letter_queue([]) == ''
print("Coding complete? Click 'Check' to earn cool rewards!")
Feb. 23, 2022
