myArray

package myAaary;

/**
 * 数组操作实现
 */
public class myArray {
    char[] cNum={'0','1','2','3','4','5','6','7','8','9'};
    char[] cStr={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p', 'q','r','s','t','u','v','w','x','y','z'};
    char[] iMonth={31,28,31,30,31,30,31,31,30,31,30,31};
    String[] sMail = {"@","."};

    /**
     *  检验是否符合邮箱规则
     *  输入：String sPara
     *  输出：boolean
     */
    public boolean isMail(String sPara) {
        for (int i = 0; i <sMail.length ; i++) {
            if(sPara.indexOf(sMail[i])==-1)
                return false;
        }
        return true;
    }
    /**
     *  方法：检验是否是数字串
     *  in:String sPara
     *  out:boolean
     */
    public boolean isNumber(String sPara){
        int iPLength = sPara.length();
        for (int i = 0; i < iPLength ; i++) {
            char cTemp = sPara.charAt(i);
            boolean bTemp = false;
            for (int j = 0; j <cNum.length ; j++) {
                if(cNum[j] == cTemp){
                    bTemp = true;
                    break;
                }
            }
            if(!bTemp)
                return false;
        }
        return true;
    }

    /**
     * 方法：判断字符串是否都是字母
     * in: String sPara
     * out: boolean
     * @param args
     */
    public boolean isEnglish(String sPara){
        int iPLength = sPara.length();
        for (int i = 0; i < iPLength ; i++) {
            char cTem = sPara.charAt(i);
            boolean bTem = false;
            for (int j = 0; j < cStr.length ; j++) {
                if(cTem == cStr[j]){
                    bTem = true;
                    break;
                }
            }
            if(!bTem)
                return false;
        }
        return true;
    }

    /**
     * 方法：判断是否是闰年
     * in: int sPara
     * out: boolean
     * @param args
     */
    public boolean isRyear(int sPara){
        return  sPara%100!=0&&sPara%4==0||sPara%400==0;
    }


    public static void main(String[] args){
        myArray mA = new myArray();
        System.out.println(mA.isMail("guo755@hrbeu.edu.cn"));
        System.out.println(mA.isNumber("123456"));
        System.out.println(mA.isRyear(1900));
    }
}