diff --git a/problems/0139.单词拆分.md b/problems/0139.单词拆分.md
index d60fd46c..5226502a 100644
--- a/problems/0139.单词拆分.md
+++ b/problems/0139.单词拆分.md
@@ -344,6 +344,21 @@ func wordBreak(s string,wordDict []string) bool  {
 	}
 	return dp[len(s)]
 }
+// 转化为 求装满背包s的前几位字符的方式有几种
+func wordBreak(s string, wordDict []string) bool {
+	// 装满背包s的前几位字符的方式有几种
+	dp := make([]int, len(s)+1)
+	dp[0] = 1
+	for i := 0; i <= len(s); i++ { // 背包
+		for j := 0; j < len(wordDict); j++ { // 物品
+			if i >= len(wordDict[j]) && wordDict[j] == s[i-len(wordDict[j]):i] {
+				dp[i] += dp[i-len(wordDict[j])]
+			}
+		}
+	}
+
+	return dp[len(s)] > 0
+}
 ```
 
 Javascript：