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Problem: Minimum Time Visiting All Points

Medium
30 min
Understand how to calculate the minimum time required to visit a sequence of points on a 2D grid. Explore movement rules that allow vertical, horizontal, and diagonal steps, and practice implementing an efficient solution to solve geometric problems in coding interviews.

Statement

You are given an array of nn points with integer coordinates on a 2D plane, points, where points[i]=[xi,yi]\text{points}[i] = [x_i, y_i]. Your task is to determine the minimum time in seconds required to visit all the points in the given order.

Movement rules:

  1. In one second, you can perform any one of the following:

    1. Move vertically by one unit.

    2. Move horizontally by one unit.

    3. Move diagonally (1 unit vertically and 1 unit horizontally in 1 second).

  2. You must visit the points in the exact sequence listed in the array.

  3. You may pass through points that appear later in the order, but they will not count as visits.

Constraints:

  • points.length =n= n

  • 1n 1021 \leq n \leq 10^2

  • points[i].length =2= 2

  • 103 -10^3 \leq points[i][0], points[i][1] 103\leq 10^3

Problem
Ask
Submissions

Problem: Minimum Time Visiting All Points

Medium
30 min
Understand how to calculate the minimum time required to visit a sequence of points on a 2D grid. Explore movement rules that allow vertical, horizontal, and diagonal steps, and practice implementing an efficient solution to solve geometric problems in coding interviews.

Statement

You are given an array of nn points with integer coordinates on a 2D plane, points, where points[i]=[xi,yi]\text{points}[i] = [x_i, y_i]. Your task is to determine the minimum time in seconds required to visit all the points in the given order.

Movement rules:

  1. In one second, you can perform any one of the following:

    1. Move vertically by one unit.

    2. Move horizontally by one unit.

    3. Move diagonally (1 unit vertically and 1 unit horizontally in 1 second).

  2. You must visit the points in the exact sequence listed in the array.

  3. You may pass through points that appear later in the order, but they will not count as visits.

Constraints:

  • points.length =n= n

  • 1n 1021 \leq n \leq 10^2

  • points[i].length =2= 2

  • 103 -10^3 \leq points[i][0], points[i][1] 103\leq 10^3