Question

Implement the method remove_all in the ArrayList class which takes the parameter x and removes all occurences of x from the list.

E.g., calling remove_all('a') on an ArrayList with contents ['a', 'b', 'r', 'a', 'c', 'a', 'd', 'a', 'b', 'r', 'a'] should result in the updated ArrayList ['b','r','c','d','b','r']

Answer 1

Answer:

a = ['a', 'b', 'r', 'a', 'c', 'a', 'd', 'a', 'b', 'r', 'a']  

a = [x for x in a if x != 'a']

print(a)

Explanation:

The code is written in python

a = ['a', 'b', 'r', 'a', 'c', 'a', 'd', 'a', 'b', 'r', 'a']  

a = [x for x in a if x != 'a']

print(a)

a = ['a', 'b', 'r', 'a', 'c', 'a', 'd', 'a', 'b', 'r', 'a']  

I declared a variable a and stored the list of value.

a = [x for x in a if x != 'a']

I used list comprehension to loop through the array and find any value that is not 'a' .

print(a)

I printed every value that is not 'a' in the array.