Keep the basics of numpy in test format as a memorandum. It is assumed that ** numpy ** has been imported in advance.
Question_01 Question
Function function that generates B from A(A)Write
A:
array([[5, 3, 4, 3],
[7, 6, 7, 4],
[6, 7, 5, 4]])
B:
array([[False, False, False, False],
[False, False, False, False],
[False, False, False, False]])
Answer
def function(A):
return A > 7
Question_02 Question
Function function that generates B from A(A)Write
A:
array([4, 5, 4, 5, 4, 3, 2])
B:
array([2, 3, 4, 4, 4, 5, 5])
Answer
def function(A):
return np.sort(A)
Question_03 Question
Function function that generates B from A(A)Write
A:
array([[ 1, 1, 19],
[ 7, 3, 6],
[16, 1, 11]])
B:
array([ 1, 7, 16, 1, 3, 1, 19, 6, 11])
Answer
def function(A):
return A.T.flatten()
Question_04 Question
Function function that generates B from A(A)Write
A:
array([1, 5, 4, 2, 8, 2, 9])
B:
array([1, 2, 2, 4, 5, 8, 9])
Answer
def function(A):
return np.sort(A)
Question_05 Question
A,Function function that generates C from B(A, B)Write
A:
array([[1, 3, 1],
[3, 3, 2],
[2, 2, 3]])
B:
array([[2, 3, 1],
[2, 3, 1],
[3, 3, 2]])
C:
array([[11, 15, 6],
[18, 24, 10],
[17, 21, 10]])
Answer
def function(A, B):
return np.dot(A, B)
Question_06 Question
A,Function function that generates C from B(A, B)Write
A:
array([8, 0, 3, 0, 3, 0, 0, 5, 6, 8, 5, 8, 6, 3, 3])
B:
array([3, 1, 8, 4, 5, 4, 5, 5, 2, 5, 4, 0, 7, 3, 7])
C:
array([[24, 0, 24, 0, 15],
[ 0, 0, 25, 12, 40],
[20, 0, 42, 9, 21]])
Answer
def function(A, B):
return np.reshape(A*B, (3, 5))
Question_07 Question
Function function that generates B from A(A)Write
A:
array([[2, 1, 2],
[5, 5, 1],
[5, 1, 1]])
B:
array([[-1, -2, -1],
[ 2, 2, -2],
[ 2, -2, -2]])
Answer
def function(A):
return A-3
Question_08 Question
A,Function function that generates C from B(A, B)Write
A:
array([[6, 8, 3, 2, 6, 6],
[3, 2, 2, 7, 1, 0],
[6, 2, 5, 8, 2, 1],
[3, 3, 5, 5, 8, 7],
[3, 6, 6, 8, 4, 6],
[8, 7, 6, 4, 2, 1]])
B:
array([[2, 6, 2, 6, 0, 0],
[7, 4, 5, 4, 2, 5],
[8, 5, 7, 2, 6, 0],
[6, 4, 3, 1, 3, 2],
[3, 8, 1, 4, 0, 0],
[3, 4, 3, 1, 6, 2]])
C:
array([[6, 8, 3, 2, 6, 6, 2, 6, 2, 6, 0, 0],
[3, 2, 2, 7, 1, 0, 7, 4, 5, 4, 2, 5],
[6, 2, 5, 8, 2, 1, 8, 5, 7, 2, 6, 0],
[3, 3, 5, 5, 8, 7, 6, 4, 3, 1, 3, 2],
[3, 6, 6, 8, 4, 6, 3, 8, 1, 4, 0, 0],
[8, 7, 6, 4, 2, 1, 3, 4, 3, 1, 6, 2]])
Answer
def function(A, B):
return np.hstack([A, B])
Question_09 Question
Function function that generates B from A(A)Write
A:
array([[2, 5, 7, 5, 8, 3, 7],
[8, 3, 0, 0, 7, 5, 0],
[2, 3, 1, 6, 7, 4, 0],
[8, 3, 8, 7, 8, 2, 4],
[3, 7, 5, 1, 6, 5, 2],
[7, 2, 3, 5, 7, 1, 6],
[3, 7, 5, 8, 1, 1, 2]])
B:
array([[8],
[8],
[7],
[8],
[7],
[7],
[8]])
Answer
def function(A):
return np.reshape(np.max(A, axis=1), (7,1))
Question_10 Question
Function function that generates B from A(A)Write
A:
array([8, 4, 7, 8, 2, 8, 6, 2, 1, 3, 5, 7, 6, 0, 3])
B:
array([[64, 16, 49],
[64, 4, 64],
[36, 4, 1],
[ 9, 25, 49],
[36, 0, 9]])
Answer
def function(A):
return np.reshape(A**2, (5,3))
Question_11 Question
A,Function function that generates C from B(A, B)Write
A:
array([[5, 5, 4, 5, 6, 4],
[7, 2, 4, 3, 8, 8],
[4, 7, 4, 2, 5, 8],
[7, 1, 6, 5, 5, 3],
[4, 6, 5, 8, 6, 6],
[2, 2, 7, 5, 8, 1]])
B:
array([[7, 6, 6, 6, 1, 8],
[3, 5, 5, 1, 6, 5],
[7, 4, 8, 4, 8, 3],
[6, 4, 5, 6, 8, 4],
[5, 4, 1, 5, 4, 6],
[6, 2, 5, 3, 1, 3]])
C:
array([[35, 30, 24, 30, 6, 32],
[21, 10, 20, 3, 48, 40],
[28, 28, 32, 8, 40, 24],
[42, 4, 30, 30, 40, 12],
[20, 24, 5, 40, 24, 36],
[12, 4, 35, 15, 8, 3]])
Answer
def function(A, B):
return A*B
Question_12 Question
Function function that generates B from A(A)Write
A:
array([[6, 0, 6, 6, 8, 0, 2],
[2, 5, 5, 8, 8, 4, 3],
[5, 1, 0, 4, 0, 4, 6],
[3, 1, 1, 7, 4, 7, 7],
[3, 4, 5, 8, 0, 8, 0],
[2, 5, 6, 8, 4, 6, 0],
[0, 5, 1, 3, 6, 1, 6]])
B:
array([[21, 21, 24, 44, 30, 30, 24]])
Answer
def function(A):
return np.sum(A, axis=0)
Question_13 Question
A,Function function that generates C from B(A, B)Write
A:
array([[60, 40, 70, 30, 70, 50, 40],
[20, 30, 40, 50, 10, 20, 20],
[80, 20, 40, 10, 80, 50, 60],
[90, 70, 40, 60, 80, 80, 80],
[10, 40, 60, 50, 50, 60, 10],
[60, 20, 40, 40, 10, 90, 90]])
B:
array([[7, 7, 1, 2, 3, 5, 8]])
C:
array([[67, 47, 71, 32, 73, 55, 48],
[27, 37, 41, 52, 13, 25, 28],
[87, 27, 41, 12, 83, 55, 68],
[97, 77, 41, 62, 83, 85, 88],
[17, 47, 61, 52, 53, 65, 18],
[67, 27, 41, 42, 13, 95, 98]])
Answer
def function(A, B):
return A+B
Question_14 Question
Function function that generates B from A(A)Write
A:
array([[2, 3, 3, 8],
[2, 5, 2, 1],
[0, 1, 8, 1],
[3, 7, 0, 1]])
B:
array([[2, 2, 0, 3],
[3, 5, 1, 7],
[3, 2, 8, 0],
[8, 1, 1, 1]])
Answer
def function(A):
return A.T
Question_15 Question
Function function that generates A()Write
A:
array([[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0]])
Answer
def function():
return np.zeros((6, 7))
Question_16 Question
Function function that generates B from A(A)Write
A:
array([3, 8, 4, 7, 5])
B:
array([7, 5, 3, 8, 4])
Answer
def function(A):
return A[[3, 4, 0, 1, 2 ]]
Question_17 Question
Function function that generates B from A(A)Write
A:
array([[5, 7, 4, 6, 3],
[1, 3, 0, 6, 4],
[6, 3, 6, 4, 6],
[2, 6, 3, 5, 0],
[7, 8, 4, 0, 3],
[6, 3, 7, 1, 5],
[2, 7, 1, 4, 7]])
B:
array([[3],
[0],
[3],
[0],
[0],
[1],
[1]])
Answer
def function(A):
return np.reshape(np.min(A, axis=1), (7,1))
Question_18
A,Function function that generates C from B(A, B)Write
A:
array([[8, 0, 4, 7, 5, 4],
[8, 7, 0, 2, 8, 7],
[3, 2, 3, 6, 6, 0],
[0, 2, 7, 5, 7, 4],
[5, 7, 5, 5, 6, 5]])
B:
array([[1, 7, 2, 1, 2, 1],
[2, 6, 6, 1, 5, 4],
[8, 8, 7, 1, 4, 3],
[3, 3, 2, 0, 5, 0],
[6, 1, 6, 0, 8, 4]])
C:
array([[8, 0, 4, 7, 5, 4],
[8, 7, 0, 2, 8, 7],
[3, 2, 3, 6, 6, 0],
[0, 2, 7, 5, 7, 4],
[5, 7, 5, 5, 6, 5],
[1, 7, 2, 1, 2, 1],
[2, 6, 6, 1, 5, 4],
[8, 8, 7, 1, 4, 3],
[3, 3, 2, 0, 5, 0],
[6, 1, 6, 0, 8, 4]])
Answer
def function(A, B):
return np.vstack([A, B])
Question_19
A,Function function that generates C from B(A, B)Write
A:
array([[70, 50, 60, 20, 30, 70, 20],
[10, 10, 80, 50, 30, 60, 50],
[60, 40, 90, 40, 10, 20, 40],
[40, 80, 90, 20, 50, 20, 80],
[90, 10, 20, 40, 40, 40, 20]])
B:
array([[1, 2, 2, 2, 3, 8, 1]])
C:
array([[ 70, 100, 120, 40, 90, 560, 20],
[ 10, 20, 160, 100, 90, 480, 50],
[ 60, 80, 180, 80, 30, 160, 40],
[ 40, 160, 180, 40, 150, 160, 80],
[ 90, 20, 40, 80, 120, 320, 20]])
Answer
def function(A, B):
return A*B
Question_20
A,Function function that generates C from B(A, B)Write
A:
array([0, 6, 2, 2, 5, 8, 3, 3, 6, 6, 1, 3, 5, 3, 3, 1, 4, 4, 5, 1])
B:
array([3, 5, 4, 8, 6, 4, 7, 2, 3, 5, 6, 7, 4, 6, 8, 8, 6, 4, 2, 8])
C:
array([[-3, 1, -2, -6, -1],
[ 4, -4, 1, 3, 1],
[-5, -4, 1, -3, -5],
[-7, -2, 0, 3, -7]])
Answer
def function(A, B):
return np.reshape(A-B, (4, 5))
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