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First solution in Clear category for Voice TV Control by Sim0000
class VoiceCommand(object):
def __init__(self, channels):
self.index = 0
self.channels = channels
def first_channel(self):
self.index = 0
return self.channels[self.index]
def last_channel(self):
self.index = len(self.channels) - 1
return self.channels[self.index]
def turn_channel(self, n):
self.index = n - 1
return self.channels[self.index]
def next_channel(self):
self.index = (self.index + 1) % len(self.channels)
return self.channels[self.index]
def previous_channel(self):
self.index = (self.index - 1) % len(self.channels)
return self.channels[self.index]
def current_channel(self):
return self.channels[self.index]
def is_exist(self, ch):
flag = 0 <= ch - 1 < len(self.channels) if isinstance(ch, int) else ch in self.channels
return 'Yes' if flag else 'No'
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
CHANNELS = ["BBC", "Discovery", "TV1000"]
controller = VoiceCommand(CHANNELS)
assert controller.first_channel() == "BBC"
assert controller.last_channel() == "TV1000"
assert controller.turn_channel(1) == "BBC"
assert controller.next_channel() == "Discovery"
assert controller.previous_channel() == "BBC"
assert controller.current_channel() == "BBC"
assert controller.is_exist(4) == "No"
assert controller.is_exist("TV1000") == "Yes"
print("Coding complete? Let's try tests!")
June 17, 2018
