Merge pull request #401 from yang170/patch-7

Update 0583.两个字符串的删除操作.md

problems/0583.两个字符串的删除操作.md

@@ -104,6 +104,28 @@ public:
 
 
 Java：
+```java
+class Solution {
+    public int minDistance(String word1, String word2) {
+        int[][] dp = new int[word1.length() + 1][word2.length() + 1];
+        for (int i = 0; i < word1.length() + 1; i++) dp[i][0] = i;
+        for (int j = 0; j < word2.length() + 1; j++) dp[0][j] = j;
+        
+        for (int i = 1; i < word1.length() + 1; i++) {
+            for (int j = 1; j < word2.length() + 1; j++) {
+                if (word1.charAt(i - 1) == word2.charAt(j - 1)) {
+                    dp[i][j] = dp[i - 1][j - 1];
+                }else{
+                    dp[i][j] = Math.min(dp[i - 1][j - 1] + 2,
+                                        Math.min(dp[i - 1][j] + 1, dp[i][j - 1] + 1));
+                }
+            }
+        }
+        
+        return dp[word1.length()][word2.length()];
+    }
+}
+```
 
 
 Python：