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refactor 1375
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src/main/java/com/fishercoder/solutions/_1375.java

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package com.fishercoder.solutions;
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/**
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* 1375. Bulb Switcher III
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*
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* There is a room with n bulbs, numbered from 1 to n, arranged in a row from left to right. Initially, all the bulbs are turned off.
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* At moment k (for k from 0 to n - 1), we turn on the light[k] bulb. A bulb change color to blue only if it is on and all the previous bulbs (to the left) are turned on too.
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* Return the number of moments in which all turned on bulbs are blue.
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*
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* Example 1:
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* Input: light = [2,1,3,5,4]
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* Output: 3
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* Explanation: All bulbs turned on, are blue at the moment 1, 2 and 4.
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*
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* Example 2:
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* Input: light = [3,2,4,1,5]
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* Output: 2
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* Explanation: All bulbs turned on, are blue at the moment 3, and 4 (index-0).
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*
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* Example 3:
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* Input: light = [4,1,2,3]
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* Output: 1
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* Explanation: All bulbs turned on, are blue at the moment 3 (index-0).
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* Bulb 4th changes to blue at the moment 3.
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*
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* Example 4:
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* Input: light = [2,1,4,3,6,5]
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* Output: 3
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*
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* Example 5:
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* Input: light = [1,2,3,4,5,6]
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* Output: 6
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*
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* Constraints:
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* n == light.length
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* 1 <= n <= 5 * 10^4
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* light is a permutation of [1, 2, ..., n]
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* */
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public class _1375 {
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public static class Solution1 {
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public int numTimesAllBlue(int[] light) {

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