Java solution for Dot Product

1 files changed, 22 insertions, 0 deletions

diff --git a/challenge-145/ziameraj16/java/DotProduct.java b/challenge-145/ziameraj16/java/DotProduct.java
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index 0000000000..887c6d1d54
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+++ b/challenge-145/ziameraj16/java/DotProduct.java
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+import java.util.Arrays;
+import java.util.List;
+import java.util.Scanner;
+import java.util.stream.Collectors;
+
+public class DotProduct {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("Enter first array elements as comma separated string");
+        String[] arr1AsString = scanner.nextLine().split(",");
+        System.out.println("Enter second array elements as comma separated string");
+        String[] arr2AsString = scanner.nextLine().split(",");
+        final List<Integer> arr1 = Arrays.stream(arr1AsString).map(Integer::parseInt).collect(Collectors.toList());
+        final List<Integer> arr2 = Arrays.stream(arr2AsString).map(Integer::parseInt).collect(Collectors.toList());
+        int sum = 0;
+        for (int i = 0; i < arr1.size(); i++) {
+            sum = sum + arr1.get(i) * arr2.get(i);
+        }
+        System.out.printf("Dot product: %s", sum);
+    }
+}