# 836. Rectangle Overlap

Easy
An axis-aligned rectangle is represented as a list `[x1, y1, x2, y2]`, where `(x1, y1)` is the coordinate of its bottom-left corner, and `(x2, y2)` is the coordinate of its top-right corner. Its top and bottom edges are parallel to the X-axis, and its left and right edges are parallel to the Y-axis.
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 `rec1` and `rec2`, return `true` if they overlap, otherwise return `false`.
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
Example 3:
Input: rec1 = [0,0,1,1], rec2 = [2,2,3,3]
Output:
false
Constraints:
• `rec1.length == 4`
• `rec2.length == 4`
• `-109 <= rec1[i], rec2[i] <= 109`
• `rec1` and `rec2` represent a valid rectangle with a non-zero area.

### 解題

Runtime: 0 ms, faster than 100.00%
Memory Usage: 1.9 MB, less than 20.93%
func isRectangleOverlap(rec1 []int, rec2 []int) bool {
if (rec1 == rec1 || rec1 == rec1 ||
rec2 == rec2 || rec2 == rec2) {
return false;
}
return rec1 < rec2 &&
rec1 > rec2 &&
rec1 < rec2 &&
rec1 > rec2
}