Leetcode 1491 Solution

This article provides solution to leetcode question 1491 (number-of-times-binary-string-is-prefix-aligned)

https://leetcode.com/problems/number-of-times-binary-string-is-prefix-aligned

Solution

class Solution: def numTimesAllBlue(self, light: List[int]) -> int: curr = 0
ans = 0 for i, pos in enumerate(light): curr = max(curr, pos - 1)
if curr == i: ans += 1
return ans