Leetcode Problem 2462. Total Cost to Hire K Workers

2462. Total Cost to Hire K Workers

Leetcode Solutions

Approach: Priority Queues

  1. Initialize two priority queues head_workers and tail_workers with the first m and last m workers respectively.
  2. Set two pointers next_head = m and next_tail = n - m - 1 to track the next worker to be added to the queues.
  3. For each of the k hiring sessions: a. Compare the top workers of both queues and hire the one with the lowest cost. b. If both workers have the same cost, hire the worker from head_workers. c. Add the cost of the hired worker to the total cost. d. If next_head <= next_tail, refill the queue from which the worker was hired:
    • If from head_workers, add costs[next_head] and increment next_head.
    • If from tail_workers, add costs[next_tail] and decrement next_tail.
  4. Return the total cost after k hiring sessions.
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Approach: Priority Queue

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