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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. ////////////////////////////////////////////
  5. /// ============= ARRAY ===================
  6. ////////////////////////////////////////////
  7.  
  8. class ArrayDS {
  9. private:
  10.     int arr[100];
  11.     int size;
  12. public:
  13.     ArrayDS(){ size = 0; }
  14.  
  15.     void insert(int x){
  16.         if(size >= 100){
  17.             cout << "Array full!\n";
  18.             return;
  19.         }
  20.         arr[size++] = x;
  21.     }
  22.  
  23.     void remove(){
  24.         if(size>0) size--;
  25.         else cout << "Array empty!\n";
  26.     }
  27.  
  28.     bool search(int x){
  29.         for(int i=0;i<size;i++)
  30.             if(arr[i]==x) return true;
  31.         return false;
  32.     }
  33.  
  34.     void print(){
  35.         if(size==0) { cout << "Array empty!\n"; return; }
  36.         for(int i=0;i<size;i++)
  37.             cout<<arr[i]<<" ";
  38.         cout<<endl;
  39.     }
  40.  
  41.     void printReverse(){
  42.         if(size==0) { cout << "Array empty!\n"; return; }
  43.         for(int i=size-1;i>=0;i--)
  44.             cout<<arr[i]<<" ";
  45.         cout<<endl;
  46.     }
  47. };
  48.  
  49. ////////////////////////////////////////////
  50. /// ============ LINKED LIST =============
  51. ////////////////////////////////////////////
  52.  
  53. class LinkedList{
  54. private:
  55.     struct Node{
  56.         int data;
  57.         Node* next;
  58.     };
  59.     Node* head;
  60.  
  61. public:
  62.     LinkedList(){
  63.         head = NULL;
  64.     }
  65.  
  66.     void insertBeg(int x){
  67.         Node* n = new Node;
  68.         n->data = x;
  69.         n->next = head;
  70.         head = n;
  71.     }
  72.  
  73.     void insertEnd(int x){
  74.         Node* n = new Node;
  75.         n->data = x;
  76.         n->next = NULL;
  77.  
  78.         if(head==NULL){
  79.             head = n;
  80.             return;
  81.         }
  82.  
  83.         Node* t = head;
  84.         while(t->next != NULL) t = t->next;
  85.         t->next = n;
  86.     }
  87.  
  88.     void deleteValue(int x){
  89.         if(head==NULL){ cout<<"List empty!\n"; return; }
  90.  
  91.         if(head->data==x){
  92.             Node* t = head;
  93.             head = head->next;
  94.             delete t;
  95.             return;
  96.         }
  97.  
  98.         Node* prev = head;
  99.         Node* cur = head->next;
  100.  
  101.         while(cur){
  102.             if(cur->data == x){
  103.                 prev->next = cur->next;
  104.                 delete cur;
  105.                 return;
  106.             }
  107.             prev = cur;
  108.             cur = cur->next;
  109.         }
  110.         cout<<"Value not found!\n";
  111.     }
  112.  
  113.     bool search(int x){
  114.         Node* t = head;
  115.         while(t){
  116.             if(t->data==x) return true;
  117.             t = t->next;
  118.         }
  119.         return false;
  120.     }
  121.  
  122.     void display(){
  123.         if(head==NULL){ cout<<"List empty!\n"; return; }
  124.         Node* t = head;
  125.         while(t){
  126.             cout<<t->data<<" ";
  127.             t = t->next;
  128.         }
  129.         cout<<endl;
  130.     }
  131. };
  132.  
  133. ////////////////////////////////////////////
  134. /// ================ STACK ================
  135. ////////////////////////////////////////////
  136.  
  137. class StackDS{
  138. private:
  139.     int arr[100];
  140.     int top;
  141. public:
  142.     StackDS(){ top = -1; }
  143.  
  144.     void push(int x){
  145.         if(top>=99){ cout<<"Stack overflow!\n"; return; }
  146.         arr[++top] = x;
  147.     }
  148.  
  149.     void pop(){
  150.         if(top>=0) top--;
  151.         else cout<<"Stack empty!\n";
  152.     }
  153.  
  154.     int topElement(){
  155.         if(top>=0) return arr[top];
  156.         cout<<"Stack empty!\n";
  157.         return -1;
  158.     }
  159.  
  160.     void display(){
  161.         if(top<0){ cout<<"Stack empty!\n"; return; }
  162.         for(int i=top;i>=0;i--)
  163.             cout<<arr[i]<<" ";
  164.         cout<<endl;
  165.     }
  166. };
  167.  
  168. ////////////////////////////////////////////
  169. /// ================= QUEUE ===============
  170. ////////////////////////////////////////////
  171.  
  172. class QueueDS{
  173. private:
  174.     int arr[100];
  175.     int front,rear;
  176. public:
  177.     QueueDS(){
  178.         front = rear = 0;
  179.     }
  180.  
  181.     void enqueue(int x){
  182.         if(rear>=100){ cout<<"Queue full!\n"; return; }
  183.         arr[rear++] = x;
  184.     }
  185.  
  186.     void dequeue(){
  187.         if(front<rear) front++;
  188.         else cout<<"Queue empty!\n";
  189.     }
  190.  
  191.     int frontElement(){
  192.         if(front<rear) return arr[front];
  193.         cout<<"Queue empty!\n";
  194.         return -1;
  195.     }
  196.  
  197.     void display(){
  198.         if(front>=rear){ cout<<"Queue empty!\n"; return; }
  199.         for(int i=front;i<rear;i++)
  200.             cout<<arr[i]<<" ";
  201.         cout<<endl;
  202.     }
  203. };
  204.  
  205. ////////////////////////////////////////////
  206. /// ================ MENUS ===============
  207. ////////////////////////////////////////////
  208.  
  209. int getIntInput(){
  210.     int x;
  211.     while(!(cin>>x)){
  212.         cout<<"Invalid input! Enter a number: ";
  213.         cin.clear();
  214.         cin.ignore(1000,'\n');
  215.     }
  216.     return x;
  217. }
  218.  
  219. void arrayMenu(){
  220.     ArrayDS a;
  221.     int c,v;
  222.  
  223.     while(true){
  224.         cout<<"\nArray Menu\n";
  225.         cout<<"1 insert\n2 delete\n3 print\n4 reverse\n5 search\n6 back\n";
  226.         c = getIntInput();
  227.  
  228.         if(c==6) return;
  229.  
  230.         if(c==1){ cout<<"value:"; v = getIntInput(); a.insert(v); }
  231.         else if(c==2) a.remove();
  232.         else if(c==3) a.print();
  233.         else if(c==4) a.printReverse();
  234.         else if(c==5){
  235.             cout<<"value:"; v = getIntInput();
  236.             if(a.search(v)) cout<<"Found\n";
  237.             else cout<<"Not Found\n";
  238.         }
  239.     }
  240. }
  241.  
  242. void linkedMenu(){
  243.     LinkedList l;
  244.     int c,v;
  245.  
  246.     while(true){
  247.         cout<<"\nLinkedList Menu\n";
  248.         cout<<"1 insert beg\n2 insert end\n3 delete value\n4 search\n5 display\n6 back\n";
  249.         c = getIntInput();
  250.  
  251.         if(c==6) return;
  252.  
  253.         if(c==1){ cout<<"value:"; v = getIntInput(); l.insertBeg(v); }
  254.         else if(c==2){ cout<<"value:"; v = getIntInput(); l.insertEnd(v); }
  255.         else if(c==3){ cout<<"value:"; v = getIntInput(); l.deleteValue(v); }
  256.         else if(c==4){
  257.             cout<<"value:"; v = getIntInput();
  258.             if(l.search(v)) cout<<"Found\n";
  259.             else cout<<"Not Found\n";
  260.         }
  261.         else if(c==5) l.display();
  262.     }
  263. }
  264.  
  265. void stackMenu(){
  266.     StackDS s;
  267.     int c,v;
  268.  
  269.     while(true){
  270.         cout<<"\nStack Menu\n";
  271.         cout<<"1 push\n2 pop\n3 top\n4 display\n5 back\n";
  272.         c = getIntInput();
  273.  
  274.         if(c==5) return;
  275.  
  276.         if(c==1){ cout<<"value:"; v = getIntInput(); s.push(v); }
  277.         else if(c==2) s.pop();
  278.         else if(c==3) cout<<"Top="<<s.topElement()<<endl;
  279.         else if(c==4) s.display();
  280.     }
  281. }
  282.  
  283. void queueMenu(){
  284.     QueueDS q;
  285.     int c,v;
  286.  
  287.     while(true){
  288.         cout<<"\nQueue Menu\n";
  289.         cout<<"1 enqueue\n2 dequeue\n3 front\n4 display\n5 back\n";
  290.         c = getIntInput();
  291.  
  292.         if(c==5) return;
  293.  
  294.         if(c==1){ cout<<"value:"; v = getIntInput(); q.enqueue(v); }
  295.         else if(c==2) q.dequeue();
  296.         else if(c==3) cout<<"Front="<<q.frontElement()<<endl;
  297.         else if(c==4) q.display();
  298.     }
  299. }
  300.  
  301. ////////////////////////////////////////////
  302. /// ================= MAIN ================
  303. ////////////////////////////////////////////
  304.  
  305. int main(){
  306.  
  307.     int choice;
  308.  
  309.     while(true){
  310.         cout<<"\n==== MAIN MENU ====\n";
  311.         cout<<"1 Array\n2 LinkedList\n3 Stack\n4 Queue\n5 Exit\n";
  312.         cout<<"Choice: ";
  313.         choice = getIntInput();
  314.  
  315.         switch(choice){
  316.         case 1: arrayMenu(); break;
  317.         case 2: linkedMenu(); break;
  318.         case 3: stackMenu(); break;
  319.         case 4: queueMenu(); break;
  320.         case 5: return 0;
  321.         default: cout<<"Invalid choice!\n";
  322.         }
  323.     }
  324. }
Success #stdin #stdout 0s 5284KB
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stdout
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==== MAIN MENU ====
1 Array
2 LinkedList
3 Stack
4 Queue
5 Exit
Choice: 
Queue Menu
1 enqueue
2 dequeue
3 front
4 display
5 back
value:
Queue Menu
1 enqueue
2 dequeue
3 front
4 display
5 back
value:
Queue Menu
1 enqueue
2 dequeue
3 front
4 display
5 back
10 20 

Queue Menu
1 enqueue
2 dequeue
3 front
4 display
5 back
Front=10

Queue Menu
1 enqueue
2 dequeue
3 front
4 display
5 back

==== MAIN MENU ====
1 Array
2 LinkedList
3 Stack
4 Queue
5 Exit
Choice:
https://ideone.com/09EUdr
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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