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doc: Update java.md (#930)

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✏️ 为 Arrays.deepToString(Object[] a) 添加说明注释
🐛 修正变量名拼写错误
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xunjian
2025-03-05 00:44:41 +08:00
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parent d57b60064c
commit 792451b75f
1 changed files with 8 additions and 8 deletions
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@ -349,16 +349,16 @@ for (int a: arr) {
### 二维数组 Multidimensional Arrays
```java
int[][] matrix = { {1, 2, 3}, {4, 5} };
int[][] matrix = {{1, 2, 3}, {4, 5}, {6}};
int x = matrix[1][0]; // 4
// [[1, 2, 3], [4, 5]]
Arrays.deepToString(matrix)
for (int i = 0; i < a.length; ++i) {
for(int j = 0; j < a[i].length; ++j) {
System.out.println(a[i][j]);
}
System.out.Println(Arrays.deepToString(matrix));
// 输出: [[1, 2, 3], [4, 5], [6]]
for (int i = 0; i < matrix.length; ++i) {
for(int j = 0; j < matrix[i].length; ++j) {
System.out.println(matrix[i][j]);
}
}
// 输出: 1 2 3 4 5 6 7
// 输出: 1 2 3 4 5 6
```
### 排序 Sort