717. 1-bit and 2-bit Characters

We have two special characters. The first character can be represented by one bit 0. The second character can be represented by two bits (10or11).

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:TrueExplanation: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:FalseExplanation: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

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从看题开始，每个character由0，或者由10、11组成，bits里面有多个character。判断最后一个character是否由一位的0组成。

class Solution:    def isOneBitCharacter(self, bits):        length = len(bits)        i = 0        while(i<length):            if i == length-1:                return True            if bits[i] == 1:                i += 2            else:                i += 1        return False    

python里面没有i ++的用法，用i += 1代替。