Practice Number of Times Binary String Is Prefix-Aligned
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Number of Times Binary String Is Prefix-Aligned
You have a 1-indexed binary string of length n where all the bits are 0 initially. We will flip all the bits of this binary string (i.e., change them from 0 to 1) one by one. You are given a 1-indexed integer array flips where flips[i] indicates that the bit at index flips[i] will be flipped in the ith step. A binary string is prefix-aligned if, after the ith step, all the bits in the inclusive range [1, i] are ones and all the other bits are zeros. Return the number of times the binary string is prefix-aligned during the flipping process.
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Understanding the Number of Times Binary String Is Prefix-Aligned Problem
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Problem Statement
You have a 1-indexed binary string of length n where all the bits are 0 initially. We will flip all the bits of this binary string (i.e., change them from 0 to 1) one by one. You are given a 1-indexed integer array flips where flips[i] indicates that the bit at index flips[i] will be flipped in the ith step. A binary string is prefix-aligned if, after the ith step, all the bits in the inclusive range [1, i] are ones and all the other bits are zeros. Return the number of times the binary string is prefix-aligned during the flipping process.
Source: Number of Times Binary String Is Prefix-Aligned on LeetCode. Use the original task for its coding environment and submissions.
Number of Times Binary String Is Prefix-Aligned
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Examples
# Example 1
flips = [3,2,4,1,5]
2
# Example 2
flips = [4,1,2,3]
1
Constraints
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