Question

我需要创建一种方法，其中所有衣服，拖鞋，运输，食品，住房和书籍阵列加起来。例如，打印输出必须看起来像这样

截至2011年11月4日的费用：

学费：3200美元

食物：2600美元
     衣服：600美元

书籍：450美元

总费用：6850美元

^这些数字是作为一个例子而不是我在下面的那些。

这是我的代码

public class Budget{

  ///////////////fields////////////////




  int clothes[]= {100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210};
  int tuition[] = {200, 200, 200, 200, 200, 200, 200, 200, 200, 200, 200, 200};
  int transportation[]={100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210};
  int food[]={80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80};
  int housing[]={150, 150, 150, 150, 150, 150, 150, 150, 150, 150, 150};
  int books[]= {200, 0, 0, 0, 0, 0, 0, 300, 0, 0, 0, 0};
    int i=0; // this is arbitrary. Never hard code numbers unless that number is never going to change. in that case you make a variable and define it.

  private int expenseName[][] = {clothes, tuition, transportation, food, housing, books};

/////////constructors///////////////
    public Budget() {}

  public Budget(int name) {this.expenseName[i][i] = name;}

    public Budget(int name[], int clothes, int tuition, int transportation, int food, int housing, int books)
    {
      this.expenseName[i] = name;
      this.clothes[i] = clothes;
      this.tuition[i] = tuition;
      this.transportation[i] = transportation;
      this.food[i] = food;
      this.housing[i] = housing;
      this.books[i] = books;
    }


 /////////////methods///////////
public int getexpenseName() {return expenseName[i][i];}

public int getclothes() {return clothes[i];}//change the I
public int gettuition() {return tuition[i];}
public int gettransporation() {return transportation[i];}
public int getfood() {return food[i];}
public int gethousing() {return housing[i];}
public int books() {return books[i];}

public void setExpenseName(int name)
{
  this.expenseName[i][i] = name;
}

Answer 1

这是对二维数组中所有整数求和的代码。

int sum = 0;
for (int[] a : expenseName) {
    for (int n : a) {
        sum += n;
    }
}

在数组中添加所有数字的方法

1 个答案: