From 652fa2bbb0a43799365df33544bf13638a6b8d20 Mon Sep 17 00:00:00 2001
From: Terry Liu <102352821+Lozakaka@users.noreply.github.com>
Date: Fri, 9 Jun 2023 18:11:29 -0400
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9Ejava=202*2=20array=20solution?=
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---
 ...佳时机含手续费（动态规划）.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/problems/0714.买卖股票的最佳时机含手续费（动态规划）.md b/problems/0714.买卖股票的最佳时机含手续费（动态规划）.md
index 12789934..1443f147 100644
--- a/problems/0714.买卖股票的最佳时机含手续费（动态规划）.md
+++ b/problems/0714.买卖股票的最佳时机含手续费（动态规划）.md
@@ -154,6 +154,25 @@ class Solution {
     return dp[1];
     }
 }
+```Java
+//使用 2*2 array
+class Solution {
+    public int maxProfit(int[] prices, int fee) {
+        int dp[][] = new int[2][2];
+        int len = prices.length;
+        //[i][0] = holding the stock
+        //[i][1] = not holding the stock
+        dp[0][0] = -prices[0];
+
+        for(int i = 1; i < len; i++){
+            dp[i % 2][0] = Math.max(dp[(i - 1) % 2][0], dp[(i - 1) % 2][1] - prices[i]);
+            dp[i % 2][1] = Math.max(dp[(i - 1) % 2][1], dp[(i - 1) % 2][0] + prices[i] - fee);
+        }
+
+        return dp[(len - 1) % 2][1];
+    }
+}
+```
 ```
 
 Python：