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下一个斐波拉契数

This commit is contained in:
YuCheng Hu 2019-02-07 21:00:59 -05:00
parent 04978083ec
commit f5a896f1ae
2 changed files with 165 additions and 0 deletions
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68
src/main/java/com/ossez/codebank/interview/ManNextFibonacciNumber.java Normal file
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package com.ossez.codebank.interview;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* https://www.cwiki.us/display/ITCLASSIFICATION/Next+Fibonacci+Number
*
* @author YuCheng
*
*/
public class ManNextFibonacciNumber {
private final static Logger logger = LoggerFactory.getLogger(ManNextFibonacciNumber.class);
public static void main(String[] args) throws java.lang.Exception {
int fArray[] = new int[60];
for (int i = 0; i < 60; i++) {
fArray[i] = getFib(i);
}
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String input = br.readLine();
// System.out.println(fib(Integer.valueOf(input)));
for (int i = 0; i < Integer.valueOf(input); i++) {
Integer inputInt = Integer.valueOf(br.readLine());
// System.out.println(inputInt);
for (int j = 0; j < fArray.length; j++) {
if (fArray[j] > inputInt) {
// System.out.println(fArray[j]);
logger.debug("{} Next Fibonacci [{}]", inputInt, fArray[j]);
break;
}
}
}
}
/**
* Get Fibonacci Number
*
* @param n
* @return
*/
private static int getFib(int n) {
if (n < 0) {
return -1;
} else if (n == 0) {
return 0;
} else if (n == 1 || n == 2) {
return 1;
} else {
int[] fibAry = new int[n + 1];
fibAry[0] = 0;
fibAry[1] = fibAry[2] = 1;
for (int i = 3; i <= n; i++) {
fibAry[i] = fibAry[i - 1] + fibAry[i - 2];
}
return fibAry[n];
}
}
}

97
src/main/resources/log4j2.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE RelativeLayout>
<Configuration status="WARN">
<Properties>
<Property name="baseDir">/home/logs/reoc/services/</Property>
</Properties>
<Appenders>
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<!-- C O N S O L E - A P P E N D E R -->
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<Console name="CONSOLE" target="SYSTEM_OUT">
<PatternLayout pattern="%-d{yyyy/MM/dd HH:mm:ss} %-5p [%c] - %m%n" />
<ThresholdFilter level="TRACE" onMatch="ACCEPT" onMismatch="DENY" />
</Console>
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<!-- D E B U G _ F I L E - A P P E N D E R -->
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<RollingFile name="FILE_DEBUG" append="true" fileName="${baseDir}/services_debug.log" filePattern="${baseDir}/$${date:yyyy-MM}/services-debug-%d{yyyy-MM-dd}-%i.log.gz">
<ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY" />
<PatternLayout>
<pattern>%-d{yyyy/MM/dd HH:mm:ss} %-5p [%c] - %m%n</pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy />
<SizeBasedTriggeringPolicy size="250 MB"></SizeBasedTriggeringPolicy>
</Policies>
<DefaultRolloverStrategy max="12" />
</RollingFile>
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<!-- I N F O _ F I L E - A P P E N D E R -->
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<RollingFile name="FILE_INFO" append="true" fileName="${baseDir}/services_info.log" filePattern="${baseDir}/$${date:yyyy-MM}/services-info-%d{yyyy-MM-dd}.log.gz">
<ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY" />
<PatternLayout>
<pattern>%-d{yyyy/MM/dd HH:mm:ss} %-5p [%c] - %m%n</pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy />
<SizeBasedTriggeringPolicy size="250 MB"></SizeBasedTriggeringPolicy>
</Policies>
<DefaultRolloverStrategy max="12" />
</RollingFile>
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<!-- F I L E _ W A R N - A P P E N D E R -->
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<RollingFile name="FILE_WARN" append="true" fileName="${baseDir}/services_info.log" filePattern="${baseDir}/$${date:yyyy-MM}/services-warn-%d{yyyy-MM-dd}.log.gz">
<ThresholdFilter level="WARN" onMatch="ACCEPT" onMismatch="DENY" />
<PatternLayout>
<pattern>%-d{yyyy/MM/dd HH:mm:ss} %-5p [%c] - %m%n</pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy />
<SizeBasedTriggeringPolicy size="250 MB"></SizeBasedTriggeringPolicy>
</Policies>
<DefaultRolloverStrategy max="12" />
</RollingFile>
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<!-- F I L E _ E R R O R - A P P E N D E R -->
<!-- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<RollingFile name="FILE_ERROR" append="true" fileName="${baseDir}/services_error.log" filePattern="${baseDir}/$${date:yyyy-MM}/services-error-%d{yyyy-MM-dd}.log.gz">
<ThresholdFilter level="ERROR" onMatch="ACCEPT" onMismatch="DENY" />
<PatternLayout>
<pattern>%-d{yyyy/MM/dd HH:mm:ss} %-5p [%c] - %m%n</pattern>
</PatternLayout>
<Policies>
<TimeBasedTriggeringPolicy />
<SizeBasedTriggeringPolicy size="250 MB"></SizeBasedTriggeringPolicy>
</Policies>
<DefaultRolloverStrategy max="12" />
</RollingFile>
</Appenders>
<!-- LOGGERS -->
<Loggers>
<Logger name="com.ossez" level="TRACE" additivity="false">
<AppenderRef ref="CONSOLE" level="DEBUG" />
<AppenderRef ref="FILE_DEBUG" level="DEBUG" />
<AppenderRef ref="FILE_INFO" level="INFO" />
<AppenderRef ref="FILE_WARN" level="WARN" />
<AppenderRef ref="FILE_ERROR" level="ERROR" />
</Logger>
<root level="TRACE">
</root>
</Loggers>
</Configuration>