diff --git "a/0760.\346\211\276\345\207\272\345\217\230\344\275\215\346\230\240\345\260\204/0760-\346\211\276\345\207\272\345\217\230\344\275\215\346\230\240\345\260\204.py" "b/0760.\346\211\276\345\207\272\345\217\230\344\275\215\346\230\240\345\260\204/0760-\346\211\276\345\207\272\345\217\230\344\275\215\346\230\240\345\260\204.py"
index ea4504e..58c9a94 100644
--- "a/0760.\346\211\276\345\207\272\345\217\230\344\275\215\346\230\240\345\260\204/0760-\346\211\276\345\207\272\345\217\230\344\275\215\346\230\240\345\260\204.py"
+++ "b/0760.\346\211\276\345\207\272\345\217\230\344\275\215\346\230\240\345\260\204/0760-\346\211\276\345\207\272\345\217\230\344\275\215\346\230\240\345\260\204.py"
@@ -5,12 +5,9 @@ def anagramMappings(self, A, B):
         :type B: List[int]
         :rtype: List[int]
         """
-        record = dict()
-        for i, b in enumerate(B):
-            record[b] = i
-            
-        res = [-1 for _ in range(len(A))]
-        for i, a in enumerate(A):
-            res[i] = record[a]
-            
-        return res
\ No newline at end of file
+
+        dic = dict()
+        for i, x in enumerate(B):
+            dic[x] = i
+        
+        return [dic[x] for x in A]
\ No newline at end of file
diff --git "a/0763.\345\210\222\345\210\206\345\255\227\346\257\215\345\214\272\351\227\264/0763-\345\210\222\345\210\206\345\255\227\346\257\215\345\214\272\351\227\264.py" "b/0763.\345\210\222\345\210\206\345\255\227\346\257\215\345\214\272\351\227\264/0763-\345\210\222\345\210\206\345\255\227\346\257\215\345\214\272\351\227\264.py"
index 8b1001d..8216656 100644
--- "a/0763.\345\210\222\345\210\206\345\255\227\346\257\215\345\214\272\351\227\264/0763-\345\210\222\345\210\206\345\255\227\346\257\215\345\214\272\351\227\264.py"
+++ "b/0763.\345\210\222\345\210\206\345\255\227\346\257\215\345\214\272\351\227\264/0763-\345\210\222\345\210\206\345\255\227\346\257\215\345\214\272\351\227\264.py"
@@ -4,23 +4,36 @@ def partitionLabels(self, S):
         :type S: str
         :rtype: List[int]
         """
-        dic = {}
+        from collections import defaultdict
+        dic = defaultdict(list)
+
+        for ch in "abcdefghijklmnopqrstuvwxyz":
+            for i, char in enumerate(S):
+                if char == ch:
+                    dic[ch].append(i)
+                    break
+
+            for i in range(len(S) - 1, -1, -1):
+                if S[i] == ch:
+                    dic[ch].append(i)
+                    break
+
+
+        intervals = []
+        for val in dic.values():
+            intervals.append(val)
         
-        for index, char in enumerate(S):
-            dic[char] = index
-        
-        right = dic[S[0]]
-        left = 0
+        intervals.sort()
+        #print intervals
+
         res = []
-        for index, char in enumerate(S):
-            right = max(right, dic[char])
-            if index >= right:
-                res.append(right - left + 1)
-                left = right + 1
-        
-        return res
-                
-        
-        
-            
-        
\ No newline at end of file
+        start, end = 0, 0
+        for s, e in intervals:
+            if s > end:
+                res.append(end - start + 1)
+                start, end = s, e
+            else:
+                end = max(e, end)
+        res.append(end - start + 1)
+
+        return res
\ No newline at end of file
diff --git "a/0771.\345\256\235\347\237\263\344\270\216\347\237\263\345\244\264/0771-\345\256\235\347\237\263\344\270\216\347\237\263\345\244\264.py" "b/0771.\345\256\235\347\237\263\344\270\216\347\237\263\345\244\264/0771-\345\256\235\347\237\263\344\270\216\347\237\263\345\244\264.py"
index 0060855..4b0e5c9 100644
--- "a/0771.\345\256\235\347\237\263\344\270\216\347\237\263\345\244\264/0771-\345\256\235\347\237\263\344\270\216\347\237\263\345\244\264.py"
+++ "b/0771.\345\256\235\347\237\263\344\270\216\347\237\263\345\244\264/0771-\345\256\235\347\237\263\344\270\216\347\237\263\345\244\264.py"
@@ -1,11 +1,13 @@
 class Solution(object):
     def numJewelsInStones(self, J, S):
-        if len(J) == 0 or len(S) == 0:
-            return 0
-        count = 0
-        for itemins in S:
-            if itemins in J:
-                count += 1
-                
-        return count
-        
\ No newline at end of file
+        """
+        :type J: str
+        :type S: str
+        :rtype: int
+        """
+        J = set(J)
+        res = 0
+        for s in S:
+            if s in J:
+                res += 1
+        return res 
\ No newline at end of file