836. Rectangle Overlap


A rectangle is represented as a list [x1, y1, x2, y2], where (x1, y1) are the coordinates of its bottom-left corner, and (x2, y2) are the coordinates of its top-right corner.

Two rectangles overlap if the area of their intersection is positive. To be clear, two rectangles that only touch at the corner or edges do not overlap.

Given two (axis-aligned) rectangles, return whether they overlap.

Example 1:

Input: rec1 = [0,0,2,2], rec2 = [1,1,3,3]
Output: true

Example 2:

Input: rec1 = [0,0,1,1], rec2 = [1,0,2,1]
Output: false


  1. Both rectangles rec1 and rec2 are lists of 4 integers.
  2. All coordinates in rectangles will be between -10^9 and10^9.





class Solution {
    public boolean isRectangleOverlap(int[] rec1, int[] rec2) {
        int minx = Math.max(rec1[0],rec2[0]);
        int miny = Math.max(rec1[1],rec2[1]);
        int maxx = Math.min(rec1[2],rec2[2]);
        int maxy = Math.min(rec1[3],rec2[3]);
        if(minx>=maxx || miny>=maxy)
            return false;
        return true;