msb-public-java
/
LeetCode
mirror of https://github.com/yuanguangxin/LeetCode
1
2
Code Issues Projects Releases Wiki Activity

add q9

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pull/6/head
yuanguangxin 5 years ago
parent b49321bf97
commit 5c7a63cc15
2 changed files with 79 additions and 37 deletions
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86
.idea/workspace.xml
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@ -1,13 +1,9 @@
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ChangeListManager">
<list default="true" id="af7ffdf2-4ddc-4ed6-8222-60ed5acbc2ed" name="Default Changelist" comment="">
<change afterPath="$PROJECT_DIR$/src/q5/f1/Solution.java" afterDir="false" />
<change afterPath="$PROJECT_DIR$/src/q5/f2/Solution.java" afterDir="false" />
<change afterPath="$PROJECT_DIR$/src/q7/f1/Solution.java" afterDir="false" />
<change afterPath="$PROJECT_DIR$/src/q7/f2/Solution.java" afterDir="false" />
<change beforePath="$PROJECT_DIR$/Rocket.md" beforeDir="false" afterPath="$PROJECT_DIR$/Rocket.md" afterDir="false" />
<change beforePath="$PROJECT_DIR$/src/q172/f2/Solution.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/q172/f2/Solution.java" afterDir="false" />
<list default="true" id="af7ffdf2-4ddc-4ed6-8222-60ed5acbc2ed" name="Default Changelist" comment="add q5/q7/q172">
<change afterPath="$PROJECT_DIR$/src/q9/Solution.java" afterDir="false" />
<change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
</list>
<option name="SHOW_DIALOG" value="false" />
<option name="HIGHLIGHT_CONFLICTS" value="true" />
@ -75,12 +71,12 @@
</key>
</component>
<component name="RunManager" selected="Application.Solution (2)">
<configuration name="Main (1)" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
<option name="MAIN_CLASS_NAME" value="etc.ali.q4.Main" />
<configuration name="Solution (2)" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
<option name="MAIN_CLASS_NAME" value="q7.f2.Solution" />
<module name="LeetCode" />
<extension name="coverage">
<pattern>
<option name="PATTERN" value="etc.ali.q4.*" />
<option name="PATTERN" value="q7.f2.*" />
<option name="ENABLED" value="true" />
</pattern>
</extension>
@ -88,12 +84,12 @@
<option name="Make" enabled="true" />
</method>
</configuration>
<configuration name="Solution (1)" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
<option name="MAIN_CLASS_NAME" value="q5.f1.Solution" />
<configuration name="Solution (3)" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
<option name="MAIN_CLASS_NAME" value="q7.f1.Solution" />
<module name="LeetCode" />
<extension name="coverage">
<pattern>
<option name="PATTERN" value="q5.f1.*" />
<option name="PATTERN" value="q7.f1.*" />
<option name="ENABLED" value="true" />
</pattern>
</extension>
@ -101,12 +97,12 @@
<option name="Make" enabled="true" />
</method>
</configuration>
<configuration name="Solution (2)" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
<option name="MAIN_CLASS_NAME" value="q7.f2.Solution" />
<configuration name="Solution (4)" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
<option name="MAIN_CLASS_NAME" value="q9.Solution" />
<module name="LeetCode" />
<extension name="coverage">
<pattern>
<option name="PATTERN" value="q7.f2.*" />
<option name="PATTERN" value="q9.*" />
<option name="ENABLED" value="true" />
</pattern>
</extension>
@ -169,10 +165,10 @@
<recent_temporary>
<list>
<item itemvalue="Application.Solution (2)" />
<item itemvalue="Application.Solution (4)" />
<item itemvalue="Application.Solution (3)" />
<item itemvalue="Application.Solution (2)" />
<item itemvalue="Application.Solution" />
<item itemvalue="Application.Solution (1)" />
<item itemvalue="Application.Threads" />
</list>
</recent_temporary>
</component>
@ -210,66 +206,82 @@
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<workItem from="1580044287086" duration="7777000" />
</task>
<task id="LOCAL-00001" summary="add q5/q7/q172">
<created>1580045439607</created>
<option name="number" value="00001" />
<option name="presentableId" value="LOCAL-00001" />
<option name="project" value="LOCAL" />
<updated>1580045439608</updated>
</task>
<option name="localTasksCounter" value="2" />
<servers />
</component>
<component name="TypeScriptGeneratedFilesManager">
<option name="version" value="1" />
</component>
<component name="VcsManagerConfiguration">
<MESSAGE value="add q5/q7/q172" />
<option name="LAST_COMMIT_MESSAGE" value="add q5/q7/q172" />
</component>
<component name="WindowStateProjectService">
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30
src/q9/Solution.java
Unescape View File

@ -0,0 +1,30 @@
package q9;
/**
* 不转换成String 反转一半的数字o(log(n))
*/
public class Solution {
public boolean isPalindrome(int x) {
if (x < 0) {
return false;
}
if (x < 10) {
return true;
}
if (x % 10 == 0) {
return false;
}
int rs = 0;
while (rs < x / 10) {
int y = x % 10;
x = x / 10;
rs = rs * 10 + y;
if (rs == x) {
return true;
} else if (x / 10 == rs) {
return true;
}
}
return false;
}
}
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