From 772a8f0600adcc24e9a7958a79c69b05dfa1e2b5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=9B=9B=E9=AA=8F=E6=B4=8B?= <836157478@qq.com>
Date: Sat, 5 Aug 2023 04:08:07 +0000
Subject: [PATCH] =?UTF-8?q?update=20problems/0012.=E6=89=93=E5=8D=B0?=
 =?UTF-8?q?=E6=95=B0=E5=AD=97=E5=9B=BE=E5=BD=A2.md.=20=E6=B7=BB=E5=8A=A0?=
 =?UTF-8?q?=E4=BA=86java=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: 盛骏洋 <836157478@qq.com>
---
 ...60\345\255\227\345\233\276\345\275\242.md" | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git "a/problems/0012.\346\211\223\345\215\260\346\225\260\345\255\227\345\233\276\345\275\242.md" "b/problems/0012.\346\211\223\345\215\260\346\225\260\345\255\227\345\233\276\345\275\242.md"
index e5ecb4e..73b01d7 100644
--- "a/problems/0012.\346\211\223\345\215\260\346\225\260\345\255\227\345\233\276\345\275\242.md"
+++ "b/problems/0012.\346\211\223\345\215\260\346\225\260\345\255\227\345\233\276\345\275\242.md"
@@ -60,7 +60,38 @@ int main() {
 }
 ```
 ## Java
+```java
+import java.util.Scanner;
 
+public class Main{
+    public static void main(String[] args) {
+        Scanner in = new Scanner(System.in);
+        while (in.hasNextInt()) {
+            int n = in.nextInt();
+            for (int i = 1; i < 2 * n; i++) {  //第1行到第2n-1行
+                for (int j = 0; j < Math.abs(n - i); j++) {
+                    System.out.print(" "); //空格
+                }
+                int j = 1;
+                if (i <= n) { //上半部分（包括第n行）
+                    for (; j <= i; j++) {
+                        System.out.print(j); //每一行中的正序部分,从1打印到i
+                    }
+                } else {  //下半部分（不包括第n行）
+                    for (; j <= 2 * n - i; j++) {
+                        System.out.print(j);
+                    }
+                }
+                for (j = j - 2; j >= 1; j--) { //每一行中的倒叙部分 j-2是因为上面的j最后多加了一次
+                    System.out.print(j);
+                }
+                System.out.println();
+            }
+        }
+    }
+}
+
+```
 ## python 
 
 ```python 
-- 
Gitee