Exercício 01

[hugobertone]

import numpy as np
x=np.array ([25,23,69,54,145,2]) #Cria um array
print (x)
y=np.reshape(x,(3,2)) # muda o vetor
print (y)
z=np.resize(x,(2,5)) #muda o tamanho
print (z)
a=x[0:4] #mostra os primeiros 4 elementos
print (a)
x=x.reshape(2,3) #muda o vetor
print (x)
x[0,0]=10 #Muda um elemento
print (x)
Resultado
[ 25 23 69 54 145 2]
[[ 25 23]
[ 69 54]
[145 2]]
[[ 25 23 69 54 145]
[ 2 25 23 69 54]]
[25 23 69 54]
[[ 25 23]
[ 69 54]
[145 2]]
[[ 10 23]
[ 69 54]
[145 2]]

Tabuleiro de Xadres

import numpy as np
r,c=np.indices ((8,8))
print (r)
print (c)
f=(r+c)%2
print (f)
import matplotlib.pyplot as plt
plt.title('Tabuleiro de xadres')
plt.imshow(f,cmap='gray')
plt.colorbar()

Resultado

[[0 0 0 0 0 0 0 0]
[1 1 1 1 1 1 1 1]
[2 2 2 2 2 2 2 2]
[3 3 3 3 3 3 3 3]
[4 4 4 4 4 4 4 4]
[5 5 5 5 5 5 5 5]
[6 6 6 6 6 6 6 6]
[7 7 7 7 7 7 7 7]]
[[0 1 2 3 4 5 6 7]
[0 1 2 3 4 5 6 7]
[0 1 2 3 4 5 6 7]
[0 1 2 3 4 5 6 7]
[0 1 2 3 4 5 6 7]
[0 1 2 3 4 5 6 7]
[0 1 2 3 4 5 6 7]
[0 1 2 3 4 5 6 7]]
[[0 1 0 1 0 1 0 1]
[1 0 1 0 1 0 1 0]
[0 1 0 1 0 1 0 1]
[1 0 1 0 1 0 1 0]
[0 1 0 1 0 1 0 1]
[1 0 1 0 1 0 1 0]
[0 1 0 1 0 1 0 1]
[1 0 1 0 1 0 1 0]]