Question

java 请编写一名为sumarr方法，

请编写一名为sumarr方法，该方法的功能为求某一维数组的所有元素的和并返回，请在main方法中从键盘输入5个数存入1维数组，而后调用sumarr方法求所有元素的和并输出。程序保存为E18_3.java

Answer 1

import java.util.Scanner;
public class E18_3{

public static void main(String[] args){
    int[] intArr = new int[5];
    Scanner sc = new Scanner(System.in);
    for(int i=0;i<5;i++){
    System.out.print("请输入数组第"+(i+1)+"个数：");
    intArr[i] = sc.nextInt();

}

int sum = 0;
for(int j=0;j<intArr.length;j++){
    sum+=intArr[j];
}
System.out.print("数组的和为："+sum);
}




}

Answer 2

public static void main(String[] args)

{

/* boolean t=(false||true);

System.out.println(t);*/

Scanner sc = new Scanner(System.in);

int[] b = new int[5];

for (int i = 0; i < 5; i++) {

b[i] = sc.nextInt();

}

System.out.println(sumarr(b));

}

public static int sumarr(int[] a) {

int sum=0;

for (int i = 0; i < a.length; i++) {

sum += a[i];

}

return sum;

}

Answer 3

package test5;
import java.util.Scanner;
public class E18_3
{

/**
* @param args
*/

public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner s=new Scanner(System.in);
int a[]=new int[5];
for(int i=0;i<5;i++){
a[i]=s.nextInt();
}
System.out.println("五个数的和为："+summer( a));
}
public static int summer(int a[]){
int sum=0;
for(int i=0;i<5;i++){
sum+= a[i];

}
return sum;
}

}

Answer 4

package com.xx.oo;

import java.util.Scanner;

public class E18_3 {
static Long sumarr(long arr[]){
Long lo=0L;
for (long l : arr) {
lo+=l;
System.out.println(lo);
}
return lo;
}

public static void main(String[] args) {
Scanner san1 = new Scanner(System.in);
long a1 = san1.nextLong();
Scanner san2 = new Scanner(System.in);
long a2 = san2.nextLong();
Scanner san3 = new Scanner(System.in);
long a3 = san3.nextLong();
Scanner san4 = new Scanner(System.in);
long a4 = san4.nextLong();
Scanner san5 = new Scanner(System.in);
long a5 = san5.nextLong();
long [] arr={a1,a2,a3,a4,a5};
E18_3.sumarr(arr);

}

}