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First solution in Clear category for Digit Stack by Ephemeral
def digit_stack(commands):
csum = 0
l = []
for c in commands:
if 'PUSH' in c:
l.append(int(c.split(' ')[1]))
elif 'POP' in c:
try:
csum += l[-1]
l = l[:-1]
except:
pass
elif 'PEEK' in c:
try:
csum += l[-1]
except:
pass
return csum
if __name__ == '__main__':
print("Example:")
print(digit_stack(["PUSH 3", "POP", "POP", "PUSH 4", "PEEK",
"PUSH 9", "PUSH 0", "PEEK", "POP", "PUSH 1", "PEEK"]))
#These "asserts" using only for self-checking and not necessary for auto-testing
assert digit_stack(["PUSH 3", "POP", "POP", "PUSH 4", "PEEK",
"PUSH 9", "PUSH 0", "PEEK", "POP", "PUSH 1", "PEEK"]) == 8, "Example"
assert digit_stack(["POP", "POP"]) == 0, "pop, pop, zero"
assert digit_stack(["PUSH 9", "PUSH 9", "POP"]) == 9, "Push the button"
assert digit_stack([]) == 0, "Nothing"
print("Coding complete? Click 'Check' to review your tests and earn cool rewards!");
May 28, 2019
