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[leetCode] 717. 1-bit and 2-bit Characters (Python) 본문

Programming/코딩 1일 1문제

[leetCode] 717. 1-bit and 2-bit Characters (Python)

솜씨좋은장씨 2021. 1. 17. 22:58
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We have two special characters. The first character can be represented by one bit 0. The second character can be represented by two bits (10 or 11).

Now given a string represented by several bits. Return whether the last character must be a one-bit character or not. The given string will always end with a zero.

 

Example 1:

Input: 
bits = [1, 0, 0]
Output: True
Explanation: 
The only way to decode it is two-bit character and one-bit character. So the last character is one-bit character.

Example 2:

Input: 
bits = [1, 1, 1, 0]
Output: False
Explanation: 
The only way to decode it is two-bit character and two-bit character. So the last character is NOT one-bit character.

Note:

  • 1 <= len(bits) <= 1000.
  • bits[i] is always 0 or 1.

Solution

class Solution:
    def isOneBitCharacter(self, bits: List[int]) -> bool:
        i = 0
        
        while i < len(bits)-1:
            if bits[i] == 0:
                i+=1
            else:
                i+=2
        return i == len(bits)-1 

 

SOMJANG/CODINGTEST_PRACTICE

1일 1문제 since 2020.02.07. Contribute to SOMJANG/CODINGTEST_PRACTICE development by creating an account on GitHub.

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