Leetcode Problem 1386. Cinema Seat Allocation

1386. Cinema Seat Allocation

Leetcode Solutions

Using Bit Masking and HashMap

  1. Initialize a HashMap to store the reserved seat information for each row.
  2. Iterate over the reservedSeats array and update the HashMap with the reserved seat positions using bit masking.
  3. Initialize a counter for the number of 4-seat groups.
  4. For each entry in the HashMap, use bit masking to check the availability of 4-seat groups in the left, middle, and right sections of the row.
  5. Update the counter based on the availability of the 4-seat groups.
  6. For each row not present in the HashMap, add two 4-seat groups to the counter.
  7. Return the counter as the result.
UML Thumbnail

Using Seat Group Availability Checks

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