Added Overwrite functionality to memory

src/quojo/quantum.mojo

@@ -137,7 +137,7 @@ struct QuantumGates:
 
     fn H(borrowed self, other: Qubit) raises -> Qubit:
         return self.Hadamard(other)
-    
+
     fn X(borrowed self, other: Qubit) raises -> Qubit:
         return self.PauliX(other)
 

src/quojo/quantumComputer.mojo

@@ -30,7 +30,7 @@ struct QMC: #Quantum Memory Cells
         for i in range(start, start+size):
             self.data[i] = comp.ComplexNum(0,0)
 
-    fn write(inout self, contents: Q.Qubit, mode: String) raises:
+    fn write(inout self, contents: Q.Qubit, mode: String, address: Int = 0) raises:
         if mode == "a":
             var size = 2
 
@@ -39,13 +39,33 @@ struct QMC: #Quantum Memory Cells
 
             self.top += size
             self.addresses.push_back(self.top)
+
+        if mode == "o":
+            var size = 2
+            var start = self.addresses[address]
+            self.delete(address)
+
+            for i in range(start, start + size):
+                self.data[i] = contents.qubit[0, i - start]
+
 
-    fn write(inout self, contents: Q.Qudit, mode: String) raises:
+    fn write(inout self, contents: Q.Qudit, mode: String, address: Int = 0) raises:
         if mode == "a":
             var size = contents.qudit.cols
 
             for i in range(size):
                 self.data[self.top + i] = contents.qudit[0, i]
 
             self.top += size
-            self.addresses.push_back(self.top)
+            self.addresses.push_back(self.top)
+
+        if mode == "o":
+            var addrSize = self.addresses[address + 1] - self.addresses[address]
+            var size = contents.qudit.cols
+            if size > addrSize:
+                raise("Given contents too big, cannot overwrite")
+            var start = self.addresses[address]
+            self.delete(address)
+
+            for i in range(start, start + size):
+                self.data[i] = contents.qudit[0, i - start]