Sort Stack

Easy

0/40

Average time to solve is 20m

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32 upvotes

Asked in companies

Problem statement

You are given a stack ‘S’. Your task is to sort the sack recursively.

Note:

Looping through the stack is not allowed.
You need to return a stack that is sorted in descending order.

For example:

Given stack S = 1 3 2 
The output will be 3 2 1 since it is the sorted order.

Detailed explanation ( Input/output format, Notes, Images )

Input format :

The first line of input contains an integer ‘T’ denoting the number of test cases.
The second line of each test case contains a single integer ‘N’, denoting the stack size.
The next line contains ‘N’ space-separated integers denoting the elements of the stack, the last element of the input being the top of the stack.

If the input is 1 3 2 then the input stack will look like this :

Output format :

For each test case, print the stack in descending sorted order.

The output of each test case will be printed in a separate line.

Note:

You do not need to print anything. It has already been taken care of. Just implement the given function.

Sample Input 1 :

Sample Output 1 :

2 1 0 0
4 4 2

Explanation of the Sample Input 1:

For the first test case:
For the given stack, the resultant sorted stack would be 0 0 1 2.  

For the second test case:
For the given stack, the resulting sorted stack would be 2 2 4.

Sample Input 2 :

Sample Output 2 :

4 3 2 1 
5 2 1

Constraints:

1 <= T <= 5
1 <=  N <= 2000
0 <= S[i] <= 1000

Where ‘T’ is the total number of test cases, and 'N’ is the size of the stack, and 'S[i]' is the element of the stack.

Console