2018 DCCN Solution
year 2018
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Continue ReadingDSA 2018
Group A Group B Q.no 11
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package folder2019; import java.util.Scanner; public class no11 { private int STACKSIZE; private Integer stack[]; no11(int STACKSIZE) { this.STACKSIZE = STACKSIZE; stack = new Integer[this.STACKSIZE]; } int TOP = -1; public void push(int data) { if (TOP == STACKSIZE - 1) { System.out.println("Stack overflow"); } else { TOP++; stack[TOP] = data; } } public int pop() { if (TOP == -1) { System.out.println("Stack underflow"); } else { System.out.println("Item deleted" + stack[TOP]); TOP--; } return 0; } public void view(){ if(TOP==-1){ System.out.println("Stack empty"); } else{ for(int i=TOP;i>=0;i--){ System.out.print(stack[i]+" "); } System.out.println(""); } } } class StackUsingArray { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("enter the size of stack"); int STACKSIZE = sc.nextInt(); no11 ob = new no11(STACKSIZE); int data; System.out.println("enter a number to push"); for (int i = 0; i < STACKSIZE; i++) { data = sc.nextInt(); ob.push(data); } ob.pop(); ob.view(); } } |
Q.no 12
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//node structure class Node { int data; Node next; Node prev; }; class LinkedList { Node head; LinkedList(){ head = null; } //Inserts a new element at the given position void push_at(int newElement, int position) { Node newNode = new Node(); newNode.data = newElement; newNode.next = null; newNode.prev = null; if(position < 1) { System.out.print("\nposition should be >= 1."); } else if (position == 1) { newNode.next = head; head.prev = newNode; head = newNode; } else { Node temp = new Node(); temp = head; for(int i = 1; i < position-1; i++) { if(temp != null) { temp = temp.next; } } if(temp != null) { newNode.next = temp.next; newNode.prev = temp; temp.next = newNode; if(newNode.next != null) newNode.next.prev = newNode; } else { System.out.print("\nThe previous node is null."); } } } |
Q.no 13 Q.no 14
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import java.util.Scanner; public class Hashing { int tablesize; Integer[] arr; public Hashing(int tablesize) { this.tablesize=tablesize; arr=new Integer[tablesize]; } public int hashfunction(int key) { return key%this.tablesize; } public boolean collision(int index) { return (arr[index]!=null); } public void inserthash(int key) { int index=hashfunction(key); int i=1; while(collision(index)) { index=(hashfunction(key)+i)%this.tablesize; i++; } arr[index]=key; } public void printAll() { for (Integer var:arr ) { System.out.println(var); } } } class Hashdemo { public static void main(String args[]) { Scanner sc=new Scanner(System.in); int arr[]={24,20,37,84,50,47,67,74,52,53}; int size=arr.length; Hashing h=new Hashing(size); for(int i=0;i<size;i++){ h.inserthash(arr[i]); } h.printAll(); } } |
DSA 2019 Makeup
Group B Q.No 11.
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package folder2019; import java.util.Scanner; class Stack { private java.util.LinkedList list = new java.util.LinkedList(); public Stack() { } public void clear() { list.clear(); } public boolean isEmpty() { return list.isEmpty(); } public void push(Object el) { list.addLast(el); } public Object pop() { if (isEmpty()) { System.out.println("stack is empty"); } return list.removeLast(); } public String toString() { return list.toString(); } } public class makeup2019no11 { public static void main(String[] args) { Stack ob = new Stack(); int data; Scanner sc = new Scanner(System.in); ob.clear(); System.out.println("the stack is empty:" + ob.isEmpty()); System.out.println("enter a number to push in any stack"); for (int i = 0; i < 3; i++) { data = sc.nextInt(); ob.push(data); } ob.pop(); } } |
Q.no 12
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package folder2019; import java.util.Scanner; class Node { public int info; public Node next; public Node() { next = null; } public Node(int el) { info = el; next = null; } public Node(int el, Node ptr) { info =el; next = ptr; } } class List{ Node head,tail; public void deleteAtAny(int n) { Node previous = head; int count=1, position=n; while(count < position - 1) { previous = previous.next; count++; } Node current = previous.next; previous.next = current.next; current.next = null; } } public class makeup2019no12{ public static void main(String args[]) { Scanner sc=new Scanner(System.in); System.out.println("Singly linked list created"); List mylist = new List(); System.out.println("Enter the position"); int pos=sc.nextInt(); mylist.deleteAtAny(pos); } } |
Q.n0 13 Q.no 14 Q.no 15
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import java.util.Scanner; public class SelectionSorting { public static void selectionSort(int[] data){ int i,j,least,temp; for(i=0;i<data.length-1;i++){ for(j=i+1,least=i; j<data.length;j++){ if(data[j]<data[least]) least=j; } if(i!=least){ temp=data[least]; data[least]=data[i]; data[i]=temp; } } } static void result(int[] data){ System.out.println("The array after selection sorting is: "); for(int i=0;i<data.length;i++) System.out.print(data[i]+ " "); } public static void main(String args[]){ SelectionSorting obj1 =new SelectionSorting (); Scanner sc=new Scanner(System.in); System.out.println("enter the size of array for sorting"); int size=sc.nextInt(); System.out.println("Enter the element for array"); int data[]=new int[size]; for(int i=0;i<size;i++){ data[i]=sc.nextInt(); } selectionSort(data); result(data); } } |
DSA 2019
Group B Q.No 11
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package folder2019; import java.util.Scanner; public class no11 { private int STACKSIZE; private Integer stack[]; no11(int STACKSIZE) { this.STACKSIZE = STACKSIZE; stack = new Integer[this.STACKSIZE]; } int TOP = -1; public void push(int data) { if (TOP == STACKSIZE - 1) { System.out.println("Stack overflow"); } else { TOP++; stack[TOP] = data; } } public int pop() { if (TOP == -1) { System.out.println("Stack underflow"); } else { System.out.println("Item deleted" + stack[TOP]); TOP--; } return 0; } } class StackUsingArray { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("enter the size of stack"); int STACKSIZE = sc.nextInt(); no11 ob = new no11(STACKSIZE); int data; System.out.println("enter a number to push"); for (int i = 0; i < STACKSIZE; i++) { data = sc.nextInt(); ob.push(data); } ob.pop(); } } |
Q.No 12
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package folder2019; import java.util.Scanner; class DCLNode{ int info; DCLNode previous; DCLNode next; DCLNode(int el){ this.info=el; this.previous=null; this.next=null; } DCLNode(int el,DCLNode next,DCLNode previous){ this.info=el; this.previous=previous; this.next=next; } } class DLList{ public DCLNode head,tail; DLList(){ head=tail=null; } public boolean isEmpty(){ return head==null && tail==null; } public void insertattail(int el){ if(isEmpty()){ head=tail=new DCLNode(el); head.previous=tail; tail.next=head; } else{ tail=new DCLNode(el,head,tail); tail.previous.next=tail; head.previous=tail; } } } public class no12 { public static void main(String args[]){ Scanner sc=new Scanner(System.in); DLList ob=new DLList(); ob.insertattail(5); ob.insertattail(6); } } |
Q.no 13 Q.no 14
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KurskalAlgorith(weighted connected undirected graph) tree=null; edges=sequence of all edges of graph sorted by weight; for(i=1;i<= |E| and |tree| < |V| -1;i++) if ei from edges does not form a cycle with edges in tree add ei to tree; |
Q.no 15 The topological sorting for a directed acyclic graph is the linear ordering of vertices. For every edge U-V of a directed graph, the vertex u will come before vertex v in the ordering. Topological sorting is only possible on DAG. […]
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