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Nicolas P. Rougier
2023-04-03 09:26:02 +02:00
parent a4ac12cdc6
commit 4b759efce8
6 changed files with 226 additions and 250 deletions
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17
100_Numpy_exercises_with_solutions.md
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@@ -3,15 +3,12 @@
# 100 numpy exercises
This is a collection of exercises that have been collected in the numpy mailing list, on stack
overflow
This is a collection of exercises that have been collected in the numpy mailing list, on stack overflow
and in the numpy documentation. The goal of this collection is to offer a quick reference for both old
and new
users but also to provide a set of exercises for those who teach.
and new users but also to provide a set of exercises for those who teach.
If you find an error or think you've a better way to
solve some of them, feel
If you find an error or think you've a better way to solve some of them, feel
free to open an issue at <https://github.com/rougier/numpy-100>.
File automatically generated. See the documentation to update questions/answers/hints programmatically.
@@ -170,12 +167,6 @@ Z = np.zeros((8,8),dtype=int)
Z[1::2,::2] = 1
Z[::2,1::2] = 1
print(Z)
# Alternative solution: Using reshaping
arr = np.ones(64,dtype=int)
arr[::2]=0
arr = arr.reshape((8,8))
print(arr)
```
#### 20. Consider a (6,7,8) shape array, what is the index (x,y,z) of the 100th element? (★☆☆)
@@ -1013,7 +1004,7 @@ S = symetric(np.random.randint(0,10,(5,5)))
S[2,3] = 42
print(S)
```
#### 86. Consider a set of p matrices wich shape (n,n) and a set of p vectors with shape (n,1). How to compute the sum of of the p matrix products at once? (result has shape (n,1)) (★★★)
#### 86. Consider a set of p matrices with shape (n,n) and a set of p vectors with shape (n,1). How to compute the sum of of the p matrix products at once? (result has shape (n,1)) (★★★)
```python