Consider a list (list = []
). You can perform the following commands:
insert i e
: Insert integer at position 1.print
: Print the list.remove e
: Delete the first occurrence of integer e.append e
: Insert integer at the end of the list.sort
: Sort the list.pop
: Pop the last element from the list.reverse
: Reverse the list.
Initialize your list and read in the value of n followed by n lines of commands where each command will be of the 7 types listed above. Iterate through each command in order and perform the corresponding operation on your list.
Example
N = 4
append 1
append 2
insert 1 3
print
- append 1: Append 1 to the list, arr = [1].
- append 2: Append 2 to the list, arr = [1,2].
- insert 1 3: Insert 3 at index 1, arr = [1,3,2].
- print: Print the array.
Output:
[1, 3, 2]
Input Format
The first line contains an integer, , denoting the number of commands.
Each line of the subsequent lines contains one of the commands described above.
Constraints
- The elements added to the list must be integers.
Output Format
For each command of type print
, print the list on a new line.
Sample Input 0
12
insert 0 5
insert 1 10
insert 0 6
remove 6
append 9
append 1
sort
pop
reverse
Sample Output 0
[6, 5, 10] [1, 5, 9, 10] [9, 5, 1]
Solution Implementation
if __name__ == '__main__':
N = int(input())
l = []
for i in range(N):
name = input()
spl = str.split(name)
if len(spl) == 3:
com = str(spl[0])
ind = int(spl[1])
obj = int(spl[2])
elif len(spl) == 2:
com = str(spl[0])
obj = int(spl[1])
elif len(spl) == 1:
com = str(spl[0])
if com == "insert":
l.insert(ind,obj)
elif com == "print":
print (l)
elif com == "remove":
l.remove(obj)
elif com == "append":
l.append(obj)
elif com == "sort":
l.sort()
elif com == "pop":
l.pop()
else:
l.reverse()
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