From 7123ab82447fad9c1e387f3478905fe6aea7e852 Mon Sep 17 00:00:00 2001
From: wzs <1014355013@qq.com>
Date: Wed, 12 May 2021 23:23:13 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A00123.=E4=B9=B0=E5=8D=96?=
 =?UTF-8?q?=E8=82=A1=E7=A5=A8=E7=9A=84=E6=9C=80=E4=BD=B3=E6=97=B6=E6=9C=BA?=
 =?UTF-8?q?III=E5=92=8CJava=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../0123.买卖股票的最佳时机III.md    | 35 ++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/problems/0123.买卖股票的最佳时机III.md b/problems/0123.买卖股票的最佳时机III.md
index 0e718cf1..f6d2efb0 100644
--- a/problems/0123.买卖股票的最佳时机III.md
+++ b/problems/0123.买卖股票的最佳时机III.md
@@ -190,9 +190,42 @@ dp[1] = max(dp[1], dp[0] - prices[i]); 如果dp[1]取dp[1]，即保持买入股
 
 ## 其他语言版本
 
-
 Java：
 
+```java
+class Solution { // 动态规划
+    public int maxProfit(int[] prices) {
+        // 可交易次数
+        int k = 2;
+
+        // [天数][交易次数][是否持有股票] 
+        int[][][] dp = new int[prices.length][k + 1][2];
+
+        // badcase
+        dp[0][0][0] = 0;
+        dp[0][0][1] = Integer.MIN_VALUE;
+        dp[0][1][0] = 0;
+        dp[0][1][1] = -prices[0];
+        dp[0][2][0] = 0;
+        dp[0][2][1] = Integer.MIN_VALUE;
+
+        for (int i = 1; i < prices.length; i++) {
+            for (int j = 2; j >= 1; j--) {
+                // dp公式
+                dp[i][j][0] = Math.max(dp[i - 1][j][0], dp[i - 1][j][1] + prices[i]);
+                dp[i][j][1] = Math.max(dp[i - 1][j][1], dp[i - 1][j - 1][0] - prices[i]);
+            }
+        }
+
+        int res = 0;
+        for (int i = 1; i < 3; i++) {
+            res = Math.max(res, dp[prices.length - 1][i][0]);
+        }
+        return res;
+    }
+}
+```
+
 
 Python：