Breaking News: Grepper is joining You.com. Read the official announcement!

Sort an stack using another stack

Golu Rawat answered on August 24, 2022 Popularity 6/10 Helpfulness 2/10

answer Sort an stack using another stack

related Sort an stack using another stack

Sort an stack using another stack

Comment

public class Solution {
    public ArrayList<Integer> solve(ArrayList<Integer> A) {
        
        Stack<Integer> input_stack = new Stack<>();
        input_stack.addAll(A);
        Stack<Integer> sorted_stack = new Stack<>();
        
        while(!input_stack.isEmpty()){
            
            int top = input_stack.pop();
            insertInStack(sorted_stack, top);
        }
        
        return new ArrayList<>(sorted_stack);
    }
    
    private void insertInStack(Stack<Integer> sorted_stack, int temp){
        
        if(sorted_stack.isEmpty() || sorted_stack.peek() >= temp){
            sorted_stack.push(temp);
            return;
        }
        
        int top = sorted_stack.pop();
        insertInStack(sorted_stack, temp);
        sorted_stack.push(top);
    }
}
JavaCopy

Popularity 6/10 Helpfulness 2/10 Language java

Source: iq.opengenus.org

Tags: java stack using

Link to this answer
Share Copy Link

Contributed on Aug 24 2022

Golu Rawat

0 Answers Avg Quality 2/10

Closely Related Answers

Sort an stack using another stack

Comment

// Java program to sort a stack using
// a auxiliary stack.
import java.util.*;
 
class SortStack
{
    // This function return the sorted stack
    public static Stack<Integer> sortstack(Stack<Integer>
                                             input)
    {
        Stack<Integer> tmpStack = new Stack<Integer>();
        while(!input.isEmpty())
        {
            // pop out the first element
            int tmp = input.pop();
         
            // while temporary stack is not empty and
            // top of stack is greater than temp
            while(!tmpStack.isEmpty() && tmpStack.peek()
                                                 > tmp)
            {
                // pop from temporary stack and
                // push it to the input stack
            input.push(tmpStack.pop());
            }
             
            // push temp in temporary of stack
            tmpStack.push(tmp);
        }
        return tmpStack;
    }
     
    // Driver Code
    public static void main(String args[])
    {
        Stack<Integer> input = new Stack<Integer>();
        input.add(34);
        input.add(3);
        input.add(31);
        input.add(98);
        input.add(92);
        input.add(23);
     
        // This is the temporary stack
        Stack<Integer> tmpStack=sortstack(input);
        System.out.println("Sorted numbers are:");
     
        while (!tmpStack.empty())
        {
            System.out.print(tmpStack.pop()+" ");
        }
    }
}
// This code is contributed by Danish Kaleem

Popularity 6/10 Helpfulness 1/10 Language whatever

Source: www.geeksforgeeks.org

Tags: stack using whatever what

Link to this answer
Share Copy Link

Contributed on Aug 24 2022

Golu Rawat

0 Answers Avg Quality 2/10

Sort an stack using another stack

Contents

More Related Answers

Sort an stack using another stack

Closely Related Answers

Sort an stack using another stack

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.