Extension.java

package com.booleanuk.extension;

import com.booleanuk.helpers.ExtensionBase;

import java.util.ArrayList;

public class Extension extends ExtensionBase {
    /*
        Implement the following methods:

        1. add, which accepts two floats and returns a float (both floats added together)

        2. add, which accepts two doubles and returns a double (both doubles added together)

        3. subtract, which accepts two floats and returns a float (first float minus second float)

        4. subtract, which accepts a String and a char and returns a string with all instances of the provided char removed

        5. multiply, which accepts two ints and returns an int (first int multiplied by second int)

        6. multiply, which accepts a string and an int, and returns a string containing the provided string
        as many times as the provided int separated by a comma. E.g.
        multiply("Hello", 3) -> "Hello,Hello,Hello"

        7. multiply, which accepts an array of Strings that each contain a number, and an int
        The method should return an array of ints that contain the value of multiplying each String number by the provided int
        E.g.
        multiply(["2", "7", "3"], 3) -> [6, 21, 9]
     */

    public float add(float float1, float float2) {
        return float1 + float2;
    }


    public double add(double double1, double double2) {
        return double1 + double2;
    }


    public float subtract(float float1, float float2) {
        return float1 - float2;
    }


    public String subtract(String string, char character) {
        return string.replace(String.valueOf(character), "");
    }


    public int multiply(int int1, int int2) {
        return int1 * int2;
    }


    public String multiply(String string, int number) {
        String output = string;
        while (number - 1 != 0) {
            number--;
            output += "," + string;
        }
        return output;
    }


    public int[] multiply(String[] strings, int number) {
        int[] results = new int[strings.length];
        for (int i = 0; i < strings.length; i++) {
            results[i] = Integer.parseInt(strings[i]) * number;
        }
        return results;
    }
}