java创造二维数组求和方法
时间: 2024-05-22 11:08:31 浏览: 103
Java中创建二维数组求和可以通过嵌套循环的方式实现。具体步骤如下:
1. 首先创建一个二维数组并初始化。
2. 然后定义一个变量用于存储数组元素的和,初始值为0。
3. 使用嵌套循环遍历二维数组中的每个元素,并将元素的值累加到和变量中。
4. 遍历完成后,和变量中存储的就是二维数组所有元素的和。
下面是一段示例代码:
```
int[][] arr = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
int sum = 0;
for(int i=0; i<arr.length; i++) {
for(int j=0; j<arr[i].length; j++) {
sum += arr[i][j];
}
}
System.out.println("二维数组的和为:" + sum);
```
相关问题
java怎么将二维数组求和
以下是Java中求二维数组和的两种方法:
1. 给二维数组直接赋值并求和[^1]:
```java
int sum = 0;
int[][] nums = {{30, 35}, {11, 23, 13, 24}, {25, 21, 31}};
for (int i = 0; i < nums.length; i++) {
for (int j = 0; j < nums[i].length; j++) {
sum += nums[i][j];
}
}
System.out.println("该二维数组的和为:" + sum);
```
2. 定义二维数组长度后再求和:
```java
int sum = 0;
int[][] nums = new int[];
nums = new int[]{30, 35};
nums = new int[]{11, 23, 13, 24};
nums = new int[]{25, 21, 31};
for (int i = 0; i < nums.length; i++) {
for (int j = 0; j < nums[i].length; j++) {
sum += nums[i][j];
}
}
System.out.println("该二维数组的和为:" + sum);
```
二维数组求和java
在Java中,计算二维数组的总和通常涉及到对数组中的每个元素进行累加。你可以通过嵌套循环遍历整个数组来实现。以下是一个简单的示例:
```java
public class Main {
public static void main(String[] args) {
int[][] array = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; // 示例二维数组
int sum = 0;
// 遍历二维数组并求和
for (int i = 0; i < array.length; i++) {
for (int j = 0; j < array[i].length; j++) {
sum += array[i][j];
}
}
System.out.println("二维数组的总和是:" + sum);
}
}
```
在这个例子中,外层循环遍历行,内层循环遍历列,每次迭代将当前元素值加到`sum`上。运行这个程序后,你会得到整个二维数组所有元素的总和。
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