Question

Let’s say there is a linked list with a point for each integer in 123, head is 1, next is 2, next is 3, how do you multiply each element by a number, let’s say 3, so that the new linked list points to 3,6,9?

Answer 1

use a list comprehension:

In [1]: lis=[1,2,3]

In [2]: [x*3 for x in lis]
Out[2]: [3, 6, 9]


In [3]: num=123

In [4]: [int(x)*4 for x in str(num)]  #convert num to a string and iterate over it
Out[4]: [4, 8, 12]

In [5]: ''.join(str(int(x)*3) for x in str(num)) #to get something like 4812
Out[5]: '4812'