Java×Ö·û´®ÎÊÌâ
¸÷λţÈË£¬ÇëÎÊ£ºÔõÑùÅжÏ×Ö·û´®ÕýÐò¶ÁºÍµ¹Ðò¶ÁµÄÖµÊÇ·ñÏàͬ£¿Ð»Ð»
¶¼²»ÖªµÀ ÄãÏë ÎÊʲô
Âé·³ ÎÊÌâ˵Çå³þ°¡
charAt£¨int index£© Ò»¸öÒ»¸ö ¶Á³ö StringµÄ×Ö·û¡£¡£¡£
Ò»¸ö¸ö±È
ÓÃstringBufferÀ࣬
String s = "sdds";
StringBuffer sb1 = new StringBuffer(s);
StringBuffer sb2 = sb1.reverse();
System.out.println(sb2.toString().equals(s));
ÊÇÏë˵ÈçºÎÅжÏ×Ö·û´®µÄÕýÐòºÍµ¹ÐðÊÇ·ñÏàͬ£¿
ÅжÏÊDz»ÊÇ»ØÎÄÓ¦¸Ã¿ÉÒÔ°É
Java code:
public class Test {
public static void main(String[] args) {
System.out.println(f("abcdcba"));
System.out.println(f("abccba"));
System.out.println(f("abcddba"));
}
private static boolean f(String s){
int n=s.length();
for(int i=0;i<n-1-i;i++){
if(s.charAt(i)!=s.charAt(n-1-i)){
return false;
}
}
return true;
}
}
Java code:
class Test{
public static void main(String[] args){
String str = "123321";
System..out.println(huiwen(str));
}
private boolean huiwen(String str){
for(int i=0;i<str.length();i++){
Ïà¹ØÎÊ´ð£º
×Ö·ûÁ÷µÄ¶ÁºÍд×îÖÕÔڵײ㶼ÊÇͨ¹ý×Ö½ÚÁ÷À´Íê³ÉµÄÂ𣿡¡¶ÁдÎı¾Îļþ×Ö·ûÁ÷Ó¦¸Ã¾Í¿ÉÒÔÁ˰ɡ£¡£
¸÷λ´ó¸ç´ó½ã°ï°ïæ°¢
JavaÁ÷°üÀ¨×Ö½ÚÁ÷ºÍ×Ö·ûÁ÷£¬×Ö½ÚÁ÷ͨ¹ýIOÉ豸ÒÔ×Ö½ÚÊý¾ÝµÄ·½Ê½¶ÁÈ룬¶ø×Ö·ûÁ÷ÔòÊÇͨ¹ý×Ö½ÚÁ÷ ......
²éAPI£¬¿´µ½FeatrueFactoryÓÐÕâ¸ö·½·¨
public Feature createPolyLine(double[][] thePoints,
R ......
ÎÒÏëʹÓÃLuceneµÄ´úÂ룬·¢ÏÖÒªimportÒ»ÅúÎļþ£º
============
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
¡¡¡¡¡¡
===== ......
ÎÒÔÚeclipseÖÐдÁËÒ»¸ö²¥·ÅÒôÀÖµÄÀ࣬²¢°ÑÒôÀÖÎļþºÍÀàÎļþ·ÅÔÚÁËÒ»Æð£¬½á¹ûÔËÐÐʱ£¬³öÏÖ´íÎó£¬ËµÊÇÒôÀÖÎļþÄǸöÊǿյ쬵«ÊÇÔÚjcreatorÓÃͬÑùµÄ·½·¨½á¹ûÊÇ¿ÉÒÔÔËÐеģ¬ÇëÇó¸ß˵ָ½Ì£¬¸æËßΪʲô£¿¼±
ÄãÈôÊÇÔÚWindo ......
127ĬÈÏÊÇintÀàÐÍ£¬ÎªÊ²Ã´
byte a=127;
short b=127;
ÕâÁ½¸ö±í´ïʽ¿ÉÒÔ³ÉÁ¢£¬¸ßµÄ¸³Öµ¸øµÍµÄ²»ÊÇÓ¦¸ÃÇ¿ÖÆÀàÐÍת»»
Java³ÌÐòÀï,´´½¨ÐµÄÀà¶ÔÏóÓùؼü×Önew£¬»ØÊÕÎÞÓõÄÀà¶ÔÏóʹÓùؼü×Öfree Õ ......