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public class Main {

	public static int			NUM			= 8;

	public static final int	OP_DIVIDE	= 2;
	public static final int	OP_MINUS		= 3;
	public static final int	OP_PLUS		= 0;
	public static final int	OP_TIMES		= 1;

	public static double doOp(final double d, final int Op) {

		switch (Op) {
			case OP_PLUS:
				return d + NUM;
			case OP_DIVIDE:
				return d / NUM;
			case OP_MINUS:
				return d - NUM;
			case OP_TIMES:
				return d * NUM;
			default:
				return 0;
		}
	}

	public static String getOp(final int Op) {

		switch (Op) {
			case OP_PLUS:
				return "+";
			case OP_DIVIDE:
				return "/";
			case OP_MINUS:
				return "-";
			case OP_TIMES:
				return "*";
			default:
				return " ";
		}
	}

	public static void main(final String[] args) {

		for (int i = 1; i < 10; i++)
			solve(i);
	}

	public static void solve(final int Num) {

		double temp = 0;
		NUM = Num;
		for (int x = 0; x < 4; x++)

			for (int y = 0; y < 4; y++) {
				temp = doOp(0, OP_PLUS);

				temp = doOp(temp, x);
				temp = doOp(temp, y);
				if (temp == 6)
					System.out.println(NUM + getOp(y) + NUM + getOp(x) + NUM + "="
							+ temp);
			}

	}
}

Code: Select all

2+2+2=6.0
2+2*2=6.0
3-3*3=6.0
5+5/5=6.0
6-6+6=6.0
6/6*6=6.0
6*6/6=6.0
6+6-6=6.0