Question

JAVA programming, please help

/**
* Write the method named makeBricks().
*
* We want to make a row of bricks that is goal
* inches long. We have a number of small bricks
* (1 inch each) and big bricks (5 inches each).
* Return true if it is possible to make the
* goal by choosing from the given bricks.
*
* Examples:
* makeBricks(3, 2, 9) returns false
* makeBricks(1, 4, 12) returns false
* makeBricks(2, 1000000, 100003) returns false
* makeBricks(3, 1, 8) returns true
* makeBricks(3, 1, 9) returns false
* makeBricks(3, 2, 10) returns true
*
*
* @param small number of small bricks.
* @param big number of big bricks.
* @param goal number of bricks desired in row.
* @return true if possible with available bricks.
*/

public boolean makeBricks(int small, int big, int goal)

{
// TODO - Write the makeBricks method here

}

Answer 1

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public class MakeBricks {

    public static boolean makeBricks(int small, int big, int goal) {
        if (goal == 0) {
            return true;
        } else if (goal != 0 && small == 0 && big == 0) {
            return false;
        }

        if (big != 0) {
            int times = goal / 5;
            if(times > big){
                times = big;
            }
            goal = goal - (times * 5);
            big = 0;

        }else if(small != 0){
            goal = goal - small;
            if(goal < 0){
                goal = 0;
            }

            small = 0;
        }
        return makeBricks(small ,big, goal);
    }

    public static void main(String[] args) {
       System.out.println(makeBricks(3, 2, 9));
       System.out.println(makeBricks(1, 4, 12));
       System.out.println(makeBricks(2, 1000000, 100003));
       System.out.println(makeBricks(3,1,8 ));
       System.out.println(makeBricks(3, 2, 10));
        System.out.println(makeBricks(3, 1, 9));
    }
}
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