376. Car Fleet

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Example 1:

Input: target = 12, position = [10,8,0,5,3], speed = [2,4,1,1,3]

Output: 3

Explanation: The cars starting at 10 (speed 2) and 8 (speed 4) become a fleet. The car starting at 0 (speed 1) is a fleet by itself. The cars starting at 5 (speed 1) and 3 (speed 3) become a fleet.

Example 2:

Input: target = 10, position = [3], speed = [3]

Output: 1

Explanation: There is only one car, hence only one fleet.

Example 3:

Input: target = 100, position = [0,2,4], speed = [4,2,1]

Output: 1

Explanation: The cars starting at 0 (speed 4) and 2 (speed 2) become a fleet, meeting each other at 4. The car starting at 4 (speed 1) then joins this fleet.

Constraints:

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Time Complexity

N/A

Space Complexity

N/A