Leetcode Problem 2286. Booking Concert Tickets in Groups

2286. Booking Concert Tickets in Groups

Leetcode Solutions

Initialize a Segment Tree with each node representing a range of rows and storing two values: the maximum number of consecutive available seats and the total number of available seats in that range.\n2. For the gather operation:\n a. Query the Segment Tree to find the leftmost node with a maximum value greater than or equal to k.\n b. If such a node is found within maxRow, allocate k seats from that row and update the Segment Tree accordingly.\n c. If no such node is found, return an empty array.\n3. For the scatter operation:\n a. Query the Segment Tree for the sum of available seats up to maxRow.\n b. If the sum is less than k, return false.\n c. If the sum is greater than or equal to k, allocate seats starting from the first row and update the Segment Tree accordingly until k seats are allocated or maxRow is reached.\n d. Return true if seats are successfully allocated.

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