Leetcode 2534

There are 5 states involved. State can be transformed by folds, etc, elegantly although perhaps not with great performance.

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Leetcode 2534

Study Plan. Explore Problems Contest Discuss Interview. Study Plan See all. Array String Hash Table Dynamic Programming Math Sorting Greedy Depth-First Search Binary Search Database Breadth-First Search Tree

Prefix and Suffix Search Longest Word in Dictionary The Maze II

There is a long and thin painting that can be represented by a number line. Painting the same area multiple times will create an uneven painting so you only want to paint each area of the painting at most once. Create a boolean array to store whether each block has been painted. We can check each of these blocks, painting the unpainted ones we also keep count of how many blocks we paint because that's what the question asks for. In the worst case, we have to check every block on every day.

In this problem, there are n persons who want to enter or exit through a door. Each person can enter or exit through the door once, taking one second. We are given a non-decreasing integer array arrival of size n , where arrival[i] is the arrival time of the i th person at the door. Also, there is an array state of size n , where state[i] is 0 if person i wants to enter through the door or 1 if they want to exit through the door. The main goal is to find an array answer of size n where answer[i] is the second at which the i th person crosses the door, considering various rules regarding entering and exiting the door. We can use two pointers approach for solving this problem. First, we can create two lists, one for the entering persons and one for the exiting persons, and initialize pointers at the beginning of those lists. Next, we can iterate until both pointers reach the end of their respective lists.

Leetcode 2534

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Digit Count in Range Gophers women's hockey skates to tie with Minnesota Duluth. First Missing Positive Combination Sum IV Find K-th Smallest Pair Distance Least Operators to Express Number License Key Formatting Accounts Merge Longest Common Prefix Minimize Max Distance to Gas Station Finally, we can follow the rules stated in the problem description for entering and exiting persons and update the answer array accordingly. Minimum Time Difference Find and Replace Pattern

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Fruit Into Baskets Number of Segments in a String Design Log Storage System Design HashSet Peeking Iterator Ugly Number II Binary Watch Sliding Window Median Unique Paths II Next, we can iterate until both pointers reach the end of their respective lists. Recover a Tree From Preorder Traversal Building H2O Subarray Product Less Than K First Missing Positive