Question

write the program in python to shift the negative numbers to left and the positive numbers to right so that the resultant list will be as follows:
original list [ -2, 1, -3, -15, 16, -17, 5, -3, -6]
output should be [ 1, 16, 5, -6, -3, -17, -15, -3, -2]​

Answer 1

Answer:

list1=[-2,1,-3,-15,16,-17,5,-3,-6]

list2=[0]*9

a=len(list1)

a=a-1

j=0

for i in range(9):

  if list1[i]>0:

      list2[j]=list1[i]

      j+=1

     

  else:

      list2[a]=list1[i]

      a-=1

       

print(list2)

Explanation:

Answer 2

Answer:

l=[-2, 1, -3, -15, 16, -17, 5, -3, -6 ]

n=len(l)

print("Original list:",l)

for i in range(n-1):

     for j in range(n-i-1):

           if l [ j ] <0:

                l [ j ], l [ j + 1] = l [ j + 1], l [ j ]

print("After shifting list is:", l)

Output:

Original list: [ -2, 1, -3, -15, 16, -17, 5, -3, -6 ]

After shifting list is: [ 1,16,5,-6,-3,-17,-15,-3,-2]