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public class IntPair { // x int private final int x; // y int private final int y; /** * Constructor to create an instance of IntPair * @param x * @param y */ public IntPair(int x, int y) { this.x = x; this.y = y; } /** * Creates a new IntPair object that is the element-wise sum * * E.g., IntPair(2, 3).add(IntPair(-4, 5)) is equal to IntPair(-2, 8) * * @param other IntPair to add to this IntPair * @return a new IntPair which is the element-wise addition of this and other */

Question

public class IntPair { // x int private final int x; // y int private final int y;

/**
 * Constructor to create an instance of IntPair
 * @param x
 * @param y
 */
public IntPair(int x, int y) {
    this.x = x;
    this.y = y;
}

/**
 * Creates a new IntPair object that is the element-wise sum
 *
 * E.g., IntPair(2, 3).add(IntPair(-4, 5)) is equal to IntPair(-2, 8)
 *
 * @param other IntPair to add to this IntPair
 * @return a new IntPair which is the element-wise addition of this and other
 */
...expand
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Solution

Here is how you can implement the add method:

public IntPair add(IntPair other) {
    return new IntPair(this.x + other.x, this.y + other.y);
}

This method creates a new IntPair object whose x and y values are the sum of the x and y values of the current object and the other object, respectively.

Here's how it works:

  1. this.x + other.x adds the x value of the current object (this) to the x value of the other object.
  2. this.y + other.y adds the y value of the current object (this) to the y value of the other object.
  3. new IntPair(...) creates a new IntPair object with the calculated x and y values.
  4. The new IntPair object is returned as the result of the method.

This problem has been solved

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