Create sum of two array.cpp

sum of two array.cpp

@@ -0,0 +1,79 @@
+#include <iostream>
+using namespace std;
+
+void sumOfTwoArrays(int *input1, int size1, int *input2, int size2, int *output)
+{
+  int n=max(size1, size2);
+  int i=size1-1;
+  int j=size2-1;
+  int carry=0;
+
+  while(i>=0 && j>=0) {
+    int sum=input1[i--]+input2[j--]+carry;
+    output[n--]=sum%10;
+    carry=sum/10;
+  }
+
+  while(i>=0) {
+    int sum=input1[i--]+carry;
+    output[n--]=sum%10;
+    carry=sum/10;
+  }
+
+  while(j>=0) {
+    int sum=input2[j--]+carry;
+    output[n--]=sum%10;
+    carry=sum/10;
+  }
+
+  if(n>=0) {
+    output[n--]=carry;
+  }
+}
+
+int main()
+{
+	int t;
+	cin >> t;
+
+	while (t--)
+	{
+		int size1;
+		cin >> size1;
+
+		int *input1 = new int[size1];
+
+		for (int i = 0; i < size1; ++i)
+		{
+			cin >> input1[i];
+		}
+
+		int size2;
+		cin >> size2;
+
+		int *input2 = new int[size2];
+
+		for (int i = 0; i < size2; ++i)
+		{
+			cin >> input2[i];
+		}
+
+		int outsize = 1 + max(size1, size2);
+
+		int *output = new int[outsize];
+
+		sumOfTwoArrays(input1, size1, input2, size2, output);
+
+		for (int i = 0; i < outsize; ++i)
+		{
+			cout << output[i] << " ";
+		}
+
+		delete[] input1;
+		delete[] input2;
+		delete[] output;
+		cout << endl;
+	}
+
+	return 0;
+}