From cfa5033ac6c2ad782e21a54ef66e9333a7b9b471 Mon Sep 17 00:00:00 2001
From: je941004 <je941004@naver.com>
Date: Sat, 23 Mar 2019 22:59:58 +0900
Subject: [PATCH] #2 make random method

---
 src/main/java/Main.java | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index c687cd61..aee319a8 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -1,3 +1,6 @@
+import java.util.Random;
+
+
 public class Main {
 
   public static void main(String args[]) {
@@ -8,9 +11,25 @@ public static void main(String args[]) {
     }
   }
 
-  public static int[] createRandomNumber() {
+  public static boolean isDuplicate(int[] computerNumber, int i) {
+    for (int j = 0; j < i; j++) {
+      if (computerNumber[i] == computerNumber[j]) {
+        return true;
+      }
+    }
+    return false;
+  }
 
-    return null;
+  public static int[] createRandomNumber() {
+    Random rand = new Random();
+    int[] computerNumber = new int[3];
+    for (int i = 0; i < 3; i++) {
+      computerNumber[i] = rand.nextInt(9) + 1; // [1-9]
+      if (isDuplicate(computerNumber, i)) {
+        i--;
+      }
+    }
+    return computerNumber;
   }
 
   public static int[] Input() {