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Question 3/stock.cpp

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+#include <iostream>
+#include <unordered_map>
+#include <vector>
+#include <algorithm>
+#include <map>
+using namespace std;
+bool cmp(pair<string, int>& a, 
+        pair<string, int>& b) 
+{ 
+    return a.second > b.second; 
+} 
+class Stock {
+public:
+    string name;
+    float price;
+    int time;
+
+    Stock(string namee, float pricee, int timee) {
+        name=namee;
+        price=pricee;
+        time=timee;
+    } 
+};
+map<string,int>m;
+class Market {
+
+public:
+    vector<pair<string,Stock>> stocks;
+    vector<pair<string,int>> alerts;
+    void create_stock(string name,float price,int time) {
+        stocks.push_back(make_pair(name,Stock(name,price,time)));
+        if (!m[name]){
+            m[name]=0;
+        }
+    }
+    void get_all_stocks() {
+        for ( auto stock : stocks) {
+            cout << "Stock " << stock.second.name << ": Price " << stock.second.price << ", Timestamp " << stock.second.time << endl;
+        }
+    }
+    void set_alert(string name, int val) {
+        alerts.push_back(make_pair(name,val));
+    }
+
+    void trigger_alerts() {
+        for (auto alert:alerts) {
+            string name=alert.first;
+            for (auto stock :stocks){
+                if (stock.first == name){
+                    if (stock.second.price<=alert.second){
+                        cout << "Alert! The particular stock " << name << " is going down" << endl;
+                    }
+                    break;
+                }
+            }
+
+
+            }
+        }
+
+    void update_stock(string name, float price, int time) {
+        float x;
+        int f=0;
+         for (auto &i: stocks){
+            if (i.second.name==name){
+                if (time>i.second.time){
+                    m[name]=price-i.second.price; // change in stock price in future
+                    x=price/i.second.price;
+                    if (x<=0.8){
+                        cout << "Alert!!! The stock " << name << " is going down" << endl; //alert if stock goes down beyond 20%
+
+                    }
+                    if (x>=1.7){
+                        cout << "Alert!!! The stock " << name << " is going up" << endl; //alert if stock goes up beyound 70%     
+                    }
+
+                }
+
+                else{
+                    m[name]=i.second.price-price; // change in stock price of the past
+                }
+
+                i.second.price=price;
+                i.second.time=time;
+                f=1;
+                break;
+            }
+
+         }
+         if (f==0){
+            cout << "Stock was not found " << endl;
+         }
+     }
+
+    void get_top_performing_stocks() {
+        int x=5,y;
+        vector<pair<string, int>> v; 
+        for (auto& it : m) { 
+            v.push_back(it); 
+    } 
+        sort(v.begin(), v.end(), cmp); //sorting 
+        cout << "Top 5 performing stocks" << endl;
+        for (auto& it :v){
+            if ((x--)==0) break;
+            cout << it.first << " Has a Net change of " << it.second << "$"<< endl;
+        }
+    }
+};
+
+int main() {
+    Market market;
+    market.create_stock("AAPL", 2495.8, 163704);
+    market.create_stock("MSFT", 2000.0, 152758);
+    market.create_stock("GOGL", 1857.7, 12847);
+    market.create_stock("TSLA", 3007.5, 221532);
+    market.create_stock("JPMN", 936.5, 183922);
+    market.create_stock("UBR", 1350.0, 53318);
+    market.create_stock("ORAC", 1555.2, 71836);
+    market.create_stock("NVDA", 8875.0, 195559);
+    market.create_stock("MRCD", 1486.5, 201854);
+    market.create_stock("OPAI", 1899.9, 214517);
+
+    market.update_stock("AAPL", 3630.14, 142215);
+    market.update_stock("ORAC", 2230.4, 201517);   
+    market.update_stock("NVDA", 90007.3, 201453);  
+    market.update_stock("GOGL", 3310.74, 75451);
+    market.update_stock("UBR", 945.5, 192741);
+    market.update_stock("MSFT", 945.5, 172741);
+
+
+    market.get_all_stocks();
+    market.set_alert("MSFT",1000);
+    market.trigger_alerts();
+    market.get_top_performing_stocks();
+
+    return 0;
+}