神马作文网Java write a program to calculate the sum of each of the ser
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Java write a program to calculate the sum of each of the series:(a)1+4+9+16+...to 20terms.
import java.util.Scanner;
public class Sum {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
// 创建一个输入容器
Scanner input = new Scanner(System.in);
System.out.println("输入一个开始数：");
int start = input.nextInt();
System.out.println("输入想计算的个数：");
int end = input.nextInt();
Sum s = new Sum();
int sum = s.sum(start,end);
System.out.println("答案是：" + sum);
}
public int sum(int start,int end) {
int sum = 0;
int sum2 = 0;
for (int i = 0; i < end; i++) {
sum = sum + 1 + 2 * i;
sum2+=sum;
}
return sum2;
}
}
public class Sum {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
// 创建一个输入容器
Scanner input = new Scanner(System.in);
System.out.println("输入一个开始数：");
int start = input.nextInt();
System.out.println("输入想计算的个数：");
int end = input.nextInt();
Sum s = new Sum();
int sum = s.sum(start,end);
System.out.println("答案是：" + sum);
}
public int sum(int start,int end) {
int sum = 0;
int sum2 = 0;
for (int i = 0; i < end; i++) {
sum = sum + 1 + 2 * i;
sum2+=sum;
}
return sum2;
}
}
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