Unit 23.5
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a = [[10, 20, 30, 40], [50, 60, 70, 80], [90, 100, 110, 120]]
i = 0
while i < len(a):
j = 0
while j < len(a[j]):
print(a[i][j], end=' ')
j += 1
print()
i+= 1
Python
INFO
Unit 23.5
Python
INFO