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Given two rectangles, find if the given two rectangles overlap or not. A rectangle is denoted by providing the x and y coordinates of two points: the left top corner and the right bottom corner of the rectangle. Two rectangles sharing a side are considered overlapping. (L1 and R1 are the extreme points of the first rectangle and L2 and R2 are the extreme points of the second rectangle).

**Note: **It may be assumed that the rectangles are parallel to the coordinate axis.

**Example 1:**

**Input:**
L1=(0,10)
R1=(10,0)
L2=(5,5)
R2=(15,0)
**Output:**
1
**Explanation:**
The rectangles overlap.

**Example 2:**

**Input:**
L1=(0,2)
R1=(1,1)
L2=(-2,0)
R2=(0,-3)
**Output:**
0
**Explanation:**
The rectangles do not overlap.

**Your Task:**

You don't need to read input or print anything. Your task is to complete the function **doOverlap()** which takes the points L1, R1, L2, and R2 as input parameters and returns 1 if the rectangles overlap. Otherwise, it returns 0.

**Expected Time Complexity:**O(1)

**Expected Auxillary Space:**O(1)

**Constraints:**

-10^{9}<=x-coordinate,y-coordinate<=10^{9}

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Overlapping rectangles

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