public class ex01 {
public static void main(String[] args) {
int sum=0;
for (int i=0;i<100;i++){
sum+=i+1;
}
System.out.println("합:"+sum);
}
}
public class ex02 {
public static void main(String[] args) {
int oddSum=0, evenSum=0;
for (int i=0;i<100;i++) {
if ((i+1)%2==1)
oddSum+=i+1;
}
System.out.println("홀수합:"+oddSum);
for (int i=0;i<100;i++) {
if ((i+1)%2==0)
evenSum+=i+1;
}
System.out.println("짝수합:"+evenSum);
}
}
public class ex03 {
public static void main(String[] args) {
for (int i=100;i>0;i--) {
if (i%3==0)
System.out.println(i);
if (i!=3)
System.out.println(", ");
}
}
}
public class ex04 {
public static void main(String[] args) {
int sum=0;
for (int i=0;i<100;i++) {
if ((i+1)%3!=0)
sum+=i+1;
if ((i+1)%3==0 && (i+1)%5==0)
sum+=i+1;
}
System.out.println("총합:"+sum);
}
}
//두수 입력받아 두수 사이의합구하기
public class ex05 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n1=0, n2=0, sum=0;
System.out.println("두 수 입력 :");
n1 = sc.nextInt();
n2 = sc.nextInt();
if (n1>n2) {
int tmp = n1;
n1 = n2;
n2 = tmp;
}
for(int i=n1;i<=n2;i++) {
sum+=i;
}
System.out.println("합:"+sum);
}
}
