Leetcode Problem 2731. Movement of Robots

2731. Movement of Robots

Leetcode Solutions

Sorting and Prefix Sum

  1. Initialize an array final_positions of the same length as nums.
  2. For each robot, calculate its final position after d seconds and store it in final_positions.
  3. Sort final_positions in ascending order.
  4. Initialize a variable prefix_sum to 0 and a variable total_distance to 0.
  5. Iterate through final_positions using an index i: a. Update total_distance by adding i * final_positions[i] - prefix_sum. b. Add final_positions[i] to prefix_sum.
  6. Return total_distance modulo 10^9 + 7.
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Brute Force Simulation

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