├── .env
├── README.md
├── array_implementation_of_queue_using_c++
├── manual.txt
├── nodemon.json
└── package.json


/.env:
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1 | MONGO_URL=mongodb+srv://ramanamurugan7:ramanA%40008@cluster0.peysdza.mongodb.net/
2 | JWT_SECRET=any
3 | 


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/README.md:
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1 | # database


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/array_implementation_of_queue_using_c++:
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 1 | #include<bits/stdc++.h> // For using exit()
 2 | 
 3 | using namespace std; // Allows us to avoid writing std::cout, std::cin, etc.
 4 | 
 5 | class queue {
 6 |     int queue1[5];  // Fixed size queue
 7 |     int rear, front;  // Rear and front pointers
 8 | 
 9 | public:
10 |     // Constructor initializes front and rear to -1
11 |     queue() {
12 |         rear = -1;
13 |         front = -1;
14 |     }
15 | 
16 |     // Insert element into the queue
17 |     void insert(int x) {
18 |         // Check for queue overflow
19 |         if(rear >= 4) {  // Fixed condition (rear >= 4 for 5 elements)
20 |             cout << "Queue overflow\n";
21 |             front = rear = -1;  // Reset the queue
22 |             return;
23 |         }
24 |         queue1[++rear] = x;  // Increment rear and insert the element
25 |         cout << "Inserted " << x << endl;
26 |     }
27 | 
28 |     // Delete element from the queue
29 |     void delet() {
30 |         // Check for queue underflow
31 |         if(front == rear) {
32 |             cout << "Queue underflow\n";
33 |             return;
34 |         }
35 |         cout << "Deleted " << queue1[++front] << endl;  // Increment front and delete the element
36 |     }
37 | 
38 |     // Display elements in the queue
39 |     void display() {
40 |         // If the queue is empty
41 |         if(rear == front) {
42 |             cout << "Queue is empty\n";
43 |             return;
44 |         }
45 |         // Loop through the queue to display elements
46 |         for(int i = front + 1; i <= rear; i++)
47 |             cout << queue1[i] << " ";
48 |         cout << endl;
49 |     }
50 | };
51 | 
52 | // Main function
53 | int main() {
54 |     int ch;  // Variable to store choice
55 |     queue qu;  // Create an object of the queue class
56 | 
57 |     // Infinite loop for menu-driven program
58 |     while(1) {
59 |         // Menu options
60 |         cout << "\n1. Insert 2. Delete 3. Display 4. Exit\nEnter your choice: ";
61 |         cin >> ch;
62 | 
63 |         // Switch-case for different choices
64 |         switch(ch) {
65 |             case 1:
66 |                 cout << "Enter the element to insert: ";
67 |                 cin >> ch;  // Reusing 'ch' for the element to be inserted
68 |                 qu.insert(ch);  // Insert the element
69 |                 break;
70 |             case 2:
71 |                 qu.delet();  // Call delete function
72 |                 break;
73 |             case 3:
74 |                 qu.display();  // Display the queue
75 |                 break;
76 |             case 4:
77 |                 exit(0);  // Exit the program
78 |             default:
79 |                 cout << "Invalid choice. Please try again.\n";  // Handle invalid input
80 |         }
81 |     }
82 | 
83 |     return 0;
84 | }
85 | 


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/manual.txt:
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1 | cd client and then npm start
2 | parallely make second tereminal
3 | npx nodemon server/server


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/nodemon.json:
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1 | {
2 |     "verbose": true,
3 |     "ignore": ["./client"],
4 |     "execMap": {
5 |       "rb": "ruby",
6 |       "pde": "processing --sketch={{pwd}} --run"
7 |     }
8 |   }


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/package.json:
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 1 | {
 2 |   "name": "project",
 3 |   "version": "1.0.0",
 4 |   "main": "index.js",
 5 |   "scripts": {
 6 |     "test": "echo \"Error: no test specified\" && exit 1"
 7 |   },
 8 |   "author": "",
 9 |   "license": "ISC",
10 |   "dependencies": {
11 |     "bcryptjs": "^2.4.3",
12 |     "dotenv": "^16.3.1",
13 |     "express": "^4.18.2",
14 |     "jsonwebtoken": "^9.0.2",
15 |     "mongoose": "^7.5.0",
16 |     "nodemon": "^3.0.1"
17 |   },
18 |   "keywords": [],
19 |   "description": ""
20 | }
21 | 


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