Let's go through the code step by step to understand what it does:
1. `int[] a = new int[10];`
- - This line declares an array named `a` of type `int` with a length of 10. This means that `a` can store 10 integers.
2. `int i, j;`
- - This line declares two integer variables `i` and `j` without initializing them.
3. `for (j = 0; j < 9; j++) { a[j] = 0; }`
- - This `for` loop initializes elements 0 to 8 of the array `a` to the value 0. It starts with `j` equal to 0 and increments `j` by 1 until `j` is no longer less than 9.
4. `a[j] = 1;`
- - After the previous `for` loop, `j` is equal to 9. This line assigns the value 1 to the element at index 9 of the array `a`. So, the last element of the array is set to 1.
5. `for (i = 0; i < 10; i++) { System.out.println(i + " " + a[i]); }`
- - This `for` loop iterates from `i` equal to 0 to `i` less than 10. Inside the loop, it prints the value of `i` concatenated with a space, followed by the value of `a[i]`.
- - The output of this loop will be:
```
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 1
```
So, the final output will display the numbers from 0 to 9 along with the corresponding values stored in the array `a`. All elements except the last one will have the value 0, and the last element will have the value 1.
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