18 lines
563 B
Python
18 lines
563 B
Python
def is_happy(s):
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"""You are given a string s.
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Your task is to check if the string is happy or not.
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A string is happy if its length is at least 3 and every 3 consecutive letters are distinct
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For example:
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is_happy(a) => False
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is_happy(aa) => False
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is_happy(abcd) => True
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is_happy(aabb) => False
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is_happy(adb) => True
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is_happy(xyy) => False
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"""
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if len(s) < 3:
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return False
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for i in range(len(s) - 2):
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if s[i] == s[i+1] or s[i] == s[i+2] or s[i+1] == s[i+2]:
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return False
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return True |