Question

Numbers Replacement

Note: Start from the left end of the list.

sample input1

1 -2 3 -4 -5 6

sample output1

1 1 3 3 3 6

sample input2

1 11 -13 21 -19

sample output2

1 11 11 21 21

Answer 1

Num = [1, -2, 3, -4, -5, 6]
#Num = [1, 11, -13, 21, -19]


print("Original Array: ",Num)        
for r in range(1,len(Num)):
    if(Num[r]<0):
        Num[r] = Num[r-1]
print("Modified Array: ",Num)