Add java solution for Largest Multiple

1 files changed, 39 insertions, 0 deletions

diff --git a/challenge-115/ziameraj16/java/LargestMultiple.java b/challenge-115/ziameraj16/java/LargestMultiple.java
new file mode 100644
index 0000000000..ada2d9226a
--- /dev/null
+++ b/challenge-115/ziameraj16/java/LargestMultiple.java
@@ -0,0 +1,39 @@
+import java.util.*;
+import java.util.stream.Collectors;
+
+public class LargestMultiple {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("Enter comma separate numbers");
+        final String input = scanner.nextLine();
+        final List<Integer> list = Arrays.stream(input.split(",")).map(Integer::valueOf).collect(Collectors.toList());
+        System.out.print("Output: ");
+        getLargestMultiple(list).stream().forEach(System.out::print);
+        System.out.println();
+    }
+
+    public static List<Integer> getLargestMultiple(List<Integer> list) {
+        final List<Integer> sortedList = list.stream().sorted(Comparator.reverseOrder()).collect(Collectors.toList());
+        if (sortedList.get(sortedList.size() - 1) % 2 == 0) {
+            return sortedList;
+        } else {
+            int i = list.size() - 2;
+            while (true) {
+                if (sortedList.get(i) % 2 == 0) {
+                    List<Integer> newList = new ArrayList<>(list.size());
+                    for (int j = 0; j <= i - 1; j++) {
+                        newList.add(sortedList.get(j));
+                    }
+                    for (int j = i + 1; j < list.size(); j++) {
+                        newList.add(sortedList.get(j));
+                    }
+                    newList.add(sortedList.get(i));
+                    return newList;
+                }
+                i--;
+            }
+        }
+    }
+}
+