diff --git a/src/main/java/com/cool/ling_cha_mount/sliding_windows/Num1208.java b/src/main/java/com/cool/ling_cha_mount/sliding_windows/Num1208.java
new file mode 100644
index 0000000..dee5416
--- /dev/null
+++ b/src/main/java/com/cool/ling_cha_mount/sliding_windows/Num1208.java
@@ -0,0 +1,35 @@
+package com.cool.ling_cha_mount.sliding_windows;
+
+import org.junit.Test;
+
+/**
+ * Created with IntelliJ IDEA.
+ *
+ * @Author: Cool
+ * @Date: 2024/10/18/12:28
+ * @Description: 1208. 尽可能使字符串相等
+ * Hard 2
+ * Score 1497
+ */
+public class Num1208 {
+    public int equalSubstring(String s, String t, int maxCost) {
+        int curCost = maxCost;
+        int left = 0;
+        int res = 0;
+        char[] sChar = s.toCharArray();
+        char[] tChar = t.toCharArray();
+        for (int i = 0; i < sChar.length; i++) {
+            curCost -= Math.abs(sChar[i] - tChar[i]);
+            while (curCost < 0) {
+                curCost+=Math.abs(sChar[left]-tChar[left++]);
+            }
+            res = Math.max(res, i - left + 1);
+        }
+        return res;
+    }
+
+    @Test
+    public void test() {
+        equalSubstring("krrgw", "zjxss", 19);
+    }
+}