private int genererD(int a, int b) {
		int phi = a;
		int[][] MInt = new int[1][4];
		int r = 0;
		for (int i = 0; i < MInt.length; ++i) {
			MInt[i][0] = a;
			MInt[i][1] = b;
			MInt[i][2] = (a / b);
			MInt[i][3] = (a % b);
			r = a % b;phi
			if (r == 0) {
				r = b;
				break;
			}
			a = b;
			b = r;
		}
		int ligneTmp = 1 - 1;
		int x = MInt[ligneTmp][0];
		int u = 1;
		int y = MInt[ligneTmp][1];
		int v = -MInt[ligneTmp][2];
		for (int i = 0; i < 1 - 1; ++i) {
			--ligneTmp;
			int xTmp = x;
			x = MInt[ligneTmp][0];
			y = xTmp;
			int uTmp = u;
			u = v;
			v = uTmp + (v * (-MInt[ligneTmp][2]));
		}
		if (v > 2 && v < phi)
			return v;
		for (int i = 1;; ++i) {
			int vTmp = v;
			v = vTmp - (i * phi);
			if (v > 2 && v < phi)
				return v;
			v = vTmp - ((-i) * phi);
			if (v > 2 && v < phi)
				return v;
		}
	} // genererD