strack.java

caculater in the ssd any...asdf sadf

package bluewater;

public class Strack {
	public double[] numberStrack = new double[100];

	public char[] signStrack = new char[100];

	public String point = "";

	public int number, sign, now;

	public void pushNumber(double x) {
		number++;
		numberStrack[number] = x;
	}

	public void upNumber() {

		number--;
	}

	public void pushSign(char x) {
		sign++;
		signStrack[sign] = x;
	}

	public void upSign() {
		sign--;
	}

	public boolean nextIsNumber() {
		if (point.charAt(now) >= '0' && point.charAt(now) <= '9')
			return true;
		return false;
	}

	public double giveMeNumber() {
		double j = 0;
		int i;
		for (i = now; i < point.length(); i++) {
			if (point.charAt(i) >= '0' && point.charAt(i) <= '9') {
				j = j*10+(Double.valueOf(point.charAt(i))-48);
			} else
				break;
		}
		now=i-1;
		return j;
	}

	public Strack(String x) {
		for (int i = 0; i < 99; i++)
			numberStrack[i] = 0;
		for (int i = 0; i < 99; i++)
			signStrack[i] = '0';
		point = x;
		number = 0;
		sign = 0;
		now = 0;
	}
}