Answer
legit=4
2041
legit=3
2411
if left cell is not equal to 0 left cell and right cell increase by 1 and then left cell is going to encountered 0 then legit is going to reduced by 1 and right cell number go to left cell number and right side of the last number 1 will be copied by 1
Work Step by Step
step 1 : legit=4 (size of list number)
2041 (set the value of left to 1 (two) and right to 2( zero)
Step2 :(if left is not 0 then increase left by 1 and right by 1)
if left is encountered 0 then reduce legit by 1
legit=3
Step 3: (while right is less than 4 then copy the item at the position right into position (right -1)) and increase right by 1 , set the value of right to (left +1)
/answer is legit =3
2411/
