File size: 2,966 Bytes
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class Prac{
static Node first,last,t;
static class Node{
int data;
Node next;
Node(int d){
data = d;
next = null;
}
}
void create(int a[], int n){
first = new Node(a[0]);
last = first;
for(int i=1;i<n;i++){
t = new Node(a[i]);
last.next = t;
last = t;
}
}
// Insert
int Length(Node n){
int l = 0;
while(n!=null){
l++;
n = n.next;
}
return l;
}
void Insert(Node n, int index, int x){
Node t = new Node(x);
if(index<0 || index > Length(n))
return;
if(index==0){
if(first == null){
first = t;
}
else{
t.next = first;
first = t;
}
}
else{
for(int i=0;i<index-1;i++){
n = n.next;
}
t.next = n.next;
n.next = t;
}
}
void Delete(Node n, int index){
Node q=null;
if(index<0 || index>Length(n)){
return;
}
if(index==0){
if(n==first){
first = first.next;
}
}
else{
for(int i=0;i<index-1;i++){
q = n;
n = n.next;
}
q.next = n.next;
}
}
void Sorted(Node n, int x){
Node t = new Node(x);
Node q = null;
if(first==null){
first= t;
}
else{
while(n!=null && n.data<x){
q = n;
n = n.next;
}
if(n==first){
t.next = first;
first =t;
}
else{
t.next = q.next;
q.next = t;
}
}
}
boolean isSot(Node n){
int m = Integer.MIN_VALUE;
while(n!=null){
if(n.data<m){
return false;
}
else{
m = n.data;
n =n.next;
}
}
return true;
}
void Display(Node n){
while(n!=null){
System.out.print(n.data+" ");
n = n.next;
}
}
void Rem(Node p){
Node q = p.next;
while(q!=null){
if(p.data!=q.data){
p = q;
q= p.next;
}
else{
p.next = q.next;
q = p.next;
}
}
}
// Reverse using sliding pointers
void Reverse(Node p){
Node q =null,r =null;
while(p!=null){
r = q;
q = p;
p =p.next;
q.next = r;
first = q;
}
}
void Rev(Node p){
int c[] = new int[Length(p)];
Node q = p;
int i=0;
while(q!=null){
c[i] = q.data;
q = q.next;
i++;
}
q = p;
i--; // because, i gets incrementedd for one more time
while(q!=null){
q.data = c[i--];
q = q.next;
}
}
void Rv(Node q, Node p){
if(p!=null){
Rv(p,p.next);
p.next = q;
}
else{
first = q;
}
}
public static void main(String[] args){
Prac l = new Prac();
int a[] = {10,10 ,30,30,40,50,60};
int n = a.length;
l.create(a,n);
System.out.println(l.isSot(l.first));
l.Sorted(l.first,15);
l.Rv(null,l.first);
l.Display(l.first);
}
}
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