# Rectangle with Maximum Area using Java Pair

• Difficulty Level : Easy
• Last Updated : 22 Jun, 2022

Given an array of pairs containing length and breadth of rectangles. The task is to find the maximum area of the rectangle. Examples:

```Input: (1, 2), (3, 5), (1, 1), (4, 2)
Output: 15

Input: (3, 5), (5, 5), (9, 10)
Output: 90```

Approach:

1. Use user defined Pair class to store Breadth and Height of rectangles.
2. Make an array of this class.
3. Now, traverse the array and find the area each time. Also, keep track of maximum area.
4. Return the maximum area of rectangle.

## Java

 `// Java code to find maximum Area``import` `java.io.*;``import` `java.util.*;` `// Pair class``class` `Rectangle {` `    ``// length and``    ``int` `length;``    ``int` `breadth;` `    ``// Rectangle Constructor``    ``public` `Rectangle(``int` `x, ``int` `y)``    ``{``        ``this``.length = x;``        ``this``.breadth = y;``    ``}``}` `// Class Area to calculate Area of rectangles``class` `Area {` `    ``// Function to calculate area``    ``static` `int` `calculate_Area(Rectangle arr[])``    ``{` `        ``int` `max_Area = Integer.MIN_VALUE;` `        ``// loop to iterate through all rectangles``        ``// and keep track of max area``        ``for` `(``int` `i = ``0``; i < arr.length; i++) {``            ``int` `temp_area = arr[i].length * arr[i].breadth;``            ``if` `(temp_area > max_Area) {``                ``max_Area = temp_area;``            ``}``        ``}``        ``return` `max_Area;``    ``}``}` `// Driver class with main function``class` `GFG {` `    ``// Driver code``    ``public` `static` `void` `main(String[] args)``    ``{``        ``Scanner sc = ``new` `Scanner(System.in);` `        ``// Creating an array of Pair``        ``Rectangle arr[] = ``new` `Rectangle[``3``];` `        ``int` `x = ``10``, y = ``20``;``        ``arr[``0``] = ``new` `Rectangle(x, y);` `        ``x = ``5``;``        ``y = ``25``;``        ``arr[``1``] = ``new` `Rectangle(x, y);` `        ``x = ``15``;``        ``y = ``10``;``        ``arr[``1``] = ``new` `Rectangle(x, y);` `        ``x = ``12``;``        ``y = ``12``;``        ``arr[``2``] = ``new` `Rectangle(x, y);` `        ``Area obj = ``new` `Area();``        ``System.out.println(obj.calculate_Area(arr));``    ``}``}`

Output:

`200`

Time complexity: O(n)

Auxiliary Space: O(1)

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