freeCodeCamp/curriculum/challenges/chinese/08-data-analysis-with-python/numpy/initialize-array-problem.md

---
id: 5e9a0a8e09c5df3cc3600ed6
challengeType: 11
videoId: 0jGfH8BPfOk
dashedName: initialize-array-problem
---

# --question--

## --text--

What is another way to produce the following array?

```py
[[1. 1. 1. 1. 1.]
[1. 0. 0. 0. 1.]
[1. 0. 9. 0. 1.]
[1. 0. 0. 0. 1.]
[1. 1. 1. 1. 1.]]
```

## --answers--

```py
output = np.ones((5, 5))

z = np.zeros((3, 3))
z[1, 1] = 9

output[1:-1, 1:-1] = z
```

---

```py
output = np.ones((5, 5))

z = np.zeros((3, 3))
z[1, 1] = 9

output[1:3, 1:3] = z
```

---

```py
output = np.ones((5, 5))

z = np.zeros((3, 3))
z[1, 1] = 9

output[4:1, 4:1] = z
```

## --video-solution--

1