100以内偶数的求和 and 数组的反转

//100以内偶数的求和
/*
public class Test15{

public static void main(String[]args){

    int a;
    int sum = 0;
    for(a=0;a<=100;a++){
        int b = a % 2;
        if(b == 0){
        sum = sum + a;}
    }
    System.out.println(sum);


}

}
*/

//数组的反转
public class Test15{

public static void main(String[]args){

int a = 12345;
int b = a%10*10000+a/10%10*1000+a/100%10*100+a/1000%10*10+a/10000;
System.out.println(b);

}

}