Simple Text Editor 是一个包含undo操作的文本编辑器,追加、删除、查询都通过 StringBuilder 实现,undo通过栈实现。 Simple Text Editor import java.util.*;/** * Simple Text Editor * https://www.hackerrank.com/challenges/simple-text-editor/problem * * @author lishoujun */publicclassSimpleTextEditor{pu...
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HackerRank hackerrank Hackster hackster HAL hal Handlebars.js handlebarsdotjs Handshake handshake Handshake handshake_protocol HappyCow happycow Harbor harbor HarmonyOS harmonyos HashiCorp hashicorp Hashnode hashnode Haskell haskell Hasura hasura Hatena Bookmark hatenabookmark Have I Been Pwned haveibeenpwned ...