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LRUCache.cpp

@@ -0,0 +1,69 @@
+class LRUCache {
+public:
+    LRUCache(int capacity) {
+        myCap = capacity;
+    }
+
+    int get(int key) {
+        if(myMap.find(key) == myMap.end())
+            return -1;
+        auto it = myMap[key];
+        const int val = it->second; 
+        myList.erase(it);
+        myList.insert(myList.begin(), make_pair(key, val));
+        myMap[key] = myList.begin();
+        return val;
+    }
+
+    void put(int key, int value) {
+        if(myMap.find(key) != myMap.end()){
+            myList.erase(myMap[key]);
+            myMap.erase(key); 
+        }
+
+        if(myMap.size() >= myCap){
+            int keyToBeRemoved = myList.rbegin()->first; 
+            myList.pop_back();
+            myMap.erase(keyToBeRemoved); 
+        }
+        myMap[key] = myList.insert(myList.begin(), make_pair(key, value)); 
+    }
+
+private:
+    list<pair<int, int> > myList; 
+    unordered_map<int, list<pair<int, int> >::iterator > myMap; 
+    int myCap; 
+};
+
+/**
+ * Your LRUCache object will be instantiated and called as such:
+ * LRUCache obj = new LRUCache(capacity);
+ * int param_1 = obj.get(key);
+ * obj.put(key,value);
+ *//* ipsc13 HVWzqSVX mpicc -o hello hello.c
+
+
+
+#include <mpi.h>
+#include <stdio.h>
+
+int main()
+{
+    int num,recvbuf,size,myrank;
+    num = 10;
+
+    MPI_Init(0,0);
+    MPI_Comm_size(MPI_COMM_WORLD,$size);
+    MPI_Comm_rank(MPI_COMM_WORLD,$myrank);
+
+    if(myrank==0)
+        MPI_Send(&num,1,MPI_INT,1,123,MPI_COMM_WORLD);
+    else
+        MPI_Recv(&recvbuf,1,MPI_INT,0,123,MPI_COMM_WORLD,&status);
+
+    if(myrank == 1)
+        print()
+
+    MPI_Finalise();
+}
+