Update Readme.md

slowpeace2020 · Aug 30, 2018 · cc710e6 · cc710e6
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diff --git a/Sort/448.Find-All-Numbers-Disappeared-in-an-Array/Readme.md b/Sort/448.Find-All-Numbers-Disappeared-in-an-Array/Readme.md
@@ -14,3 +14,4 @@
                 swap(nums[i],nums[nums[i]]);            
         }
 ```        
+此题本质上和 442. Find All Duplicates in an Array 一模一样，只不过最终输出的内容是index而不是元素的值。