1.求和思想
* 求1-100之和
public class Test {
public static void main(String[] args) {
int sum=0;
int i=1;
while(i<=100){
sum=sum+i;
i++;
}
System.out.println("sum="+sum);
}
}
2.统计思想
* 统计”水仙花数”共有多少个
public class Test {
public static void main(String[] args) {
int count=0;
int i=100;
while(i<=999){
int ge=i%10;
int shi=i/10%10;
int bai=i/10/10%10;
if(ge*ge*ge+shi*shi*shi+bai*bai*bai==i){
count++;
}
i++;
}
System.out.println("count="+count);
}
}