717. 1-bit and 2-bit Characters LeetCode Solution | Easy Approach

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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 (10 or 11).

Given a binary array bits that ends with 0, return true if the last character must be a one-bit character.

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.

Constraints:

  • 1 <= bits.length <= 1000
  • bits[i] is either 0 or 1.

1-bit and 2-bit Characters Solutions

Time: O(n)
Space: O(n)

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