for (int i=0; i<ns.length; i++) {
System.out.println(ns[i]);
}
2.数组求和
int sum = 0;for (int i=0; i<ns.length; i++) {
sum += ns[i];
}
System.out.println(sum);
3.计算π
double pi = 0;
int flag = 1;
for (int i = 1; i<100000000; i = i+2) {
pi = flag == 1 ? (pi+1.0/i) : (pi-1.0/i);
flag = flag == 1 ? 0 : 1;
}
pi = pi*4;
System.out.println(pi);
jasmine
1.循环打印数组
2.数组求和
3.计算π