diff --git a/problems/0122.买卖股票的最佳时机II.md b/problems/0122.买卖股票的最佳时机II.md
index ff1b6d4a..29aa5b83 100644
--- a/problems/0122.买卖股票的最佳时机II.md
+++ b/problems/0122.买卖股票的最佳时机II.md
@@ -139,17 +139,11 @@ Java：
 // 贪心思路
 class Solution {
     public int maxProfit(int[] prices) {
-        int sum = 0;
-        int profit = 0;
-        int buy = prices[0];
+        int result = 0;
         for (int i = 1; i < prices.length; i++) {
-            profit = prices[i] - buy;
-            if (profit > 0) {
-                sum += profit;
-            }
-            buy = prices[i];
+            result += Math.max(prices[i] - prices[i - 1], 0);
         }
-        return sum;
+        return result;
     }
 }
 ```