07/07/28 22:04:03
>>178
public class Kadai {
public static void main(String[] args) {
// 1
int s1 = 0;
for (int i = 1; i <= 10; i++) s1 += i;
System.out.println(s1);
// 2
int s2 = 0;
for (int i = 10; i <= 75; i++) if (i % 2 == 0) s2 += i;
System.out.println(s2);
// 3
char[] c = {'■', '□'};
int n = 5;
int k = 0;
for (int i = 0; i < n; i++) {
int l = 1 - k;
for (int j = 0; j < n; j++) {
System.out.print(c[l]);
l = 1 - l;
}
System.out.println();
k = 1 - k;
}
}
}