Question

java编程，计算1*1＋2*2＋3*3*3+4*4*4*4+5*5*5*5*5+6*6*6*6*6*6

Answer 1

public class DoMath {
public static void main(String[] args) {
int result = 0;
for (int i = 1; i < 7; i++) {
result += func(i);
}
System.out.println(result);
}

private static int func(int i) {
return (int) Math.pow(i, i);
}
}

Answer 2

int sum = 0;
for (int i = 1; i < 7 ;i ++){
sum += Math.pow(i, i);
}
System.out.println(sum);

Answer 3

int sum=0;
for(int i=1;i<=6;i++)
{
for(int j=1;j<=i;j++)
{
if(i==j)
{ sum+= i*j;}
}
}

Answer 4

public class Main{
public static void main(String[] args){
int sum = 0;

for (int i = 1; i <= 6; i++){
int temp = i;

for(int j = 1; j < i; j++){
temp *= i;
}

sum += temp;

}

}
}

追问

如过按这个规律加到20*20……怎么写了。拜托拜托

追答

= =...刚看到。。就改一下for(int i = 1; i <= 【就是这个数】; i++) 就行了