创建 test.java

.gitignore

@@ -56,4 +56,4 @@ hs_err_pid*
 replay_pid*
 
 >>>>>>> gitea/master
-idea/
+.idea/

.idea/workspace.xml

@@ -5,7 +5,10 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="45f625e1-36c7-4942-8f7c-ba3ebe9a7d53" name="变更" comment="">
-      <change beforePath="$PROJECT_DIR$/src/Solution.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/Solution.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/solution/test.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/README.md" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/Solution.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/solution/Solution.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -47,6 +50,26 @@
     "vue.rearranger.settings.migration": "true"
   }
 }]]></component>
+  <component name="RunManager">
+    <configuration name="test" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
+      <option name="MAIN_CLASS_NAME" value="solution.test" />
+      <module name="Solution" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="solution.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="应用程序.test" />
+      </list>
+    </recent_temporary>
+  </component>
   <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="应用程序级" UseSingleDictionary="true" transferred="true" />
   <component name="TaskManager">
     <task active="true" id="Default" summary="默认任务">
@@ -55,11 +78,22 @@
       <option name="number" value="Default" />
       <option name="presentableId" value="Default" />
       <updated>1693822719192</updated>
-      <workItem from="1693822720224" duration="1148000" />
+      <workItem from="1693822720224" duration="5742000" />
     </task>
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
     <option name="version" value="3" />
   </component>
+  <component name="XDebuggerManager">
+    <breakpoint-manager>
+      <breakpoints>
+        <line-breakpoint enabled="true" type="java-line">
+          <url>file://$PROJECT_DIR$/src/solution/test.java</url>
+          <line>36</line>
+          <option name="timeStamp" value="3" />
+        </line-breakpoint>
+      </breakpoints>
+    </breakpoint-manager>
+  </component>
 </project>

README.md

@@ -1,2 +1,2 @@
-# Solution
+# solution.Solution
 

src/solution/Solution.java

@@ -1,3 +1,5 @@
+package solution;
+
 import java.util.HashSet;
 import java.util.Set;
 

src/solution/test.java

@@ -0,0 +1,47 @@
+package solution;
+
+
+public class test {
+    public static void main(String[] args) {
+        String s = "abcabcbb";
+        Character a = 'a';
+//        int length = lengthOfLongestSubstring(s);
+//        System.out.println(isInString(a,));
+
+    }
+
+    public static int lengthOfLongestSubstring(String s) {
+        StringBuilder longestString = new StringBuilder();
+        StringBuilder lastMaxString = new StringBuilder();
+        if (s != null){
+            for (int i = 0; i < s.length(); i++) {
+                char temp = s.charAt(i);
+                if (i == 0){
+                    continue;
+                }
+                Character prChar = s.charAt(i-1);
+                if (prChar != temp){
+                    boolean in = isInString(temp,longestString);
+                    if (!in){
+                        lastMaxString.append(temp);
+                    }
+
+                }
+            }
+            return longestString.length();
+        }
+        return 0;
+    }
+
+    public static boolean isInString(Character a,StringBuilder b){
+        if (b != null) {
+            for (int i = 0; i < b.length(); i++) {
+                Character temp = b.charAt(i);
+                if (temp == a) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+}