refactor 714

fishercoder1534 · fishercoder1534 · commit cfd7b05a1990 · 2021-03-16T11:41:47.000-07:00
diff --git a/src/main/java/com/fishercoder/solutions/_714.java b/src/main/java/com/fishercoder/solutions/_714.java
@@ -40,8 +40,8 @@ public int maxProfit(int[] prices, int fee) {
             int cash = 0;
             int hold = -prices[0];
             for (int i = 1; i < prices.length; i++) {
-                cash = Math.max(cash, hold + prices[i] - fee);
-                hold = Math.max(hold, cash - prices[i]);
+                cash = Math.max(cash, hold + prices[i] - fee);//this means to sell the stock: gain the current ith day's price and pay the transaction fee
+                hold = Math.max(hold, cash - prices[i]);//this means to buy in this stock on the ith day's price.
             }
             return cash;
         }

Original file line number	Diff line number	Diff line change
`@@ -40,8 +40,8 @@ public int maxProfit(int[] prices, int fee) {`
`40`	`40`	`int cash = 0;`
`41`	`41`	`int hold = -prices[0];`
`42`	`42`	`for (int i = 1; i < prices.length; i++) {`
`43`		`- cash = Math.max(cash, hold + prices[i] - fee);`
`44`		`- hold = Math.max(hold, cash - prices[i]);`
	`43`	`+ cash = Math.max(cash, hold + prices[i] - fee);//this means to sell the stock: gain the current ith day's price and pay the transaction fee`
	`44`	`+ hold = Math.max(hold, cash - prices[i]);//this means to buy in this stock on the ith day's price.`
`45`	`45`	`}`
`46`	`46`	`return cash;`
`47`	`47`	`}`