java-15位身份证号升级到18位

public static String doVerify(String id) {
		char pszSrc[] = id.toCharArray();
		int iS = 0;
		int iW[] = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };
		char szVerCode[] = new char[] { '1', '0', 'X', '9', '8', '7', '6', '5','4', '3', '2' };
		int i;
		for (i = 0; i < 17; i++) {
			iS += (int) (pszSrc[i] - '0') * iW[i];
		}
		int iY = iS % 11;
		return id + szVerCode[iY];
	}