璁捐鍘熷垯鍚嶇О
璁捐鍘熷垯綆浠?/span>
閲嶈鎬?/span>
鍗曚竴鑱岃矗鍘熷垯
(Single Responsibility Principle, SRP)
綾葷殑鑱岃矗瑕佸崟涓錛屼笉鑳藉皢澶鐨勮亴璐ｆ斁鍦ㄤ竴涓被涓?/span>
★★★★☆
寮闂師鍒?/span>
(Open-Closed Principle, OCP)
杞歡瀹炰綋瀵規(guī)墿灞曟槸寮鏀劇殑錛屼絾瀵逛慨鏀規(guī)槸鍏抽棴鐨勶紝鍗沖湪涓嶄慨鏀逛竴
涓蔣浠跺疄浣撶殑鍩虹涓婂幓鎵╁睍鍏跺姛鑳?/span>
★★★★★
閲屾皬浠ｆ崲鍘熷垯
(Liskov Substitution Principle, LSP)
鍦ㄨ蔣浠剁郴緇熶腑錛屼竴涓彲浠ユ帴鍙楀熀綾誨璞＄殑鍦版柟蹇呯劧鍙互鎺ュ彈涓
涓瓙綾誨璞?/span>
★★★★☆
渚濊禆鍊掕漿鍘熷垯
(Dependency Inversion Principle, DIP)
瑕侀拡瀵規(guī)娊璞″眰緙栫▼錛岃屼笉瑕侀拡瀵瑰叿浣撶被緙栫▼
★★★★★
鎺ュ彛闅旂鍘熷垯
(Interface Segregation Principle, ISP)
浣跨敤澶氫釜涓撻棬鐨勬帴鍙ｆ潵鍙栦唬涓涓粺涓鐨勬帴鍙?/span>
★★☆☆☆
鍚堟垚澶嶇敤鍘熷垯
(Composite Reuse Principle, CRP)
鍦ㄧ郴緇熶腑搴旇灝介噺澶氫嬌鐢ㄧ粍鍚堝拰鑱氬悎鍏寵仈鍏崇郴錛屽敖閲忓皯浣跨敤鐢?/span>
鑷充笉浣跨敤緇ф壙鍏崇郴
★★★★☆
榪背鐗規(guī)硶鍒?/span>
(Law of Demeter, LoD)
涓涓蔣浠跺疄浣撳鍏朵粬瀹炰綋鐨勫紩鐢ㄨ秺灝戣秺濂斤紝鎴栬呰濡傛灉涓や釜綾?/span>
涓嶅繀褰兼鐩存帴閫氫俊錛岄偅涔堣繖涓や釜綾誨氨涓嶅簲褰撳彂鐢熺洿鎺ョ殑鐩鎬簰浣?/span>
鐢紝鑰屾槸閫氳繃寮曞叆涓涓涓夎呭彂鐢熼棿鎺ヤ氦浜?/span>
★★★☆☆
]]>
緙栬緫鏈璇︾粏璇存槑
銆銆Java涓嬌鐢ㄤ簨鍔″鐞嗭紝棣栧厛瑕佹眰鏁版嵁搴撴敮鎸佷簨鍔°傚浣跨敤MySQL鐨勪簨鍔″姛鑳斤紝灝辮姹侻ySQL鐨勮〃綾誨瀷涓篒nnodb鎵嶆敮鎸佷簨鍔°傚惁鍒欙紝鍦↗ava紼嬪簭涓仛浜哻ommit鎴杛ollback錛屼絾鍦ㄦ暟鎹簱涓牴鏈笉鑳界敓鏁堛? 銆銆JavaBean涓嬌鐢↗DBC鏂瑰紡榪涜浜嬪姟澶勭悊 銆銆public int delete(int sID) { 銆銆dbc = new DataBaseConnection(); 銆銆Connection con = dbc.getConnection(); 銆銆try { 銆銆con.setAutoCommit(false);// 鏇存敼JDBC浜嬪姟鐨勯粯璁ゆ彁浜ゆ柟寮? 銆銆dbc.executeUpdate("delete from xiao where ID=" + sID); 銆銆dbc.executeUpdate("delete from xiao_content where ID=" + sID); 銆銆dbc.executeUpdate("delete from xiao_affix where bylawid=" + sID); 銆銆con.commit();//鎻愪氦JDBC浜嬪姟 銆銆con.setAutoCommit(true);// 鎭㈠JDBC浜嬪姟鐨勯粯璁ゆ彁浜ゆ柟寮? 銆銆dbc.close(); 銆銆return 1; 銆銆} 銆銆catch (Exception exc) { 銆銆con.rollBack();//鍥炴粴JDBC浜嬪姟 銆銆exc.printStackTrace(); 銆銆dbc.close(); 銆銆return -1; 銆銆} 銆銆} 銆銆鍦ㄦ暟鎹簱鎿嶄綔涓紝涓欏逛簨鍔℃槸鎸囩敱涓鏉℃垨澶氭潯瀵規(guī)暟鎹簱鏇存柊鐨剆ql璇彞鎵緇勬垚鐨勪竴涓笉鍙垎鍓茬殑宸ヤ綔鍗曞厓銆傚彧鏈夊綋浜嬪姟涓殑鎵鏈夋搷浣滈兘姝ｅ父瀹屾垚浜嗭紝鏁翠釜浜嬪姟鎵嶈兘琚彁浜ゅ埌鏁版嵁搴擄紝濡傛灉鏈変竴欏規(guī)搷浣滄病鏈夊畬鎴愶紝灝卞繀欏繪挙娑堟暣涓簨鍔°? 銆銆渚嬪鍦ㄩ摱琛岀殑杞笎浜嬪姟涓紝鍋囧畾寮犱笁浠庤嚜宸辯殑甯愬彿涓婃妸1000鍏冭漿鍒版潕鍥涚殑甯愬彿涓婏紝鐩稿叧鐨剆ql璇彞濡備笅錛? 銆銆update account set monery=monery-1000 where name='zhangsan' 銆銆update account set monery=monery+1000 where name='lisi' 銆銆榪欎釜涓ゆ潯璇彞蹇呴』浣滀負(fù)涓涓畬鎴愮殑浜嬪姟鏉ュ鐞嗐傚彧鏈夊綋涓ゆ潯閮芥垚鍔熸墽琛屼簡錛屾墠鑳芥彁浜よ繖涓簨鍔°傚鏋滄湁涓鍙ュけ璐ワ紝鏁翠釜浜嬪姟蹇呴』鎾ゆ秷銆? 銆銆鍦╟onnection綾諱腑鎻愪緵浜?涓帶鍒朵簨鍔＄殑鏂規(guī)硶錛? 銆銆錛?錛?setAutoCommit(Boolean autoCommit):璁劇疆鏄惁鑷姩鎻愪氦浜嬪姟錛? 銆銆錛?錛?commit();鎻愪氦浜嬪姟錛? 銆銆錛?錛?rollback();鎾ゆ秷浜嬪姟錛? 銆銆鍦╦dbc api涓紝榛樿鐨勬儏鍐典負(fù)鑷姩鎻愪氦浜嬪姟錛屼篃灝辨槸璇達(dá)紝姣忎竴鏉″鏁版嵁搴撶殑鏇存柊鐨剆ql璇彞浠ｈ〃涓欏逛簨鍔★紝鎿嶄綔鎴愬姛鍚庯紝緋葷粺鑷姩璋冪敤commit錛堬級(jí)鏉ユ彁浜わ紝鍚﹀垯灝嗚皟鐢╮ollback錛堬級(jí)鏉ユ挙娑堜簨鍔°? 銆銆鍦╦dbc api涓紝鍙互閫氳繃璋冪敤setAutoCommit(false) 鏉ョ姝㈣嚜鍔ㄦ彁浜や簨鍔°傜劧鍚庡氨鍙互鎶婂鏉℃洿鏂版暟鎹簱鐨剆ql璇彞鍋氫負(fù)涓涓簨鍔★紝鍦ㄦ墍鏈夋搷浣滃畬鎴愪箣鍚庯紝璋冪敤commit錛堬級(jí)鏉ヨ繘琛屾暣浣撴彁浜ゃ傚樿嫢鍏朵腑涓欏?sql鎿嶄綔澶辮觸錛屽氨涓嶄細(xì)鎵цcommit錛堬級(jí)鏂規(guī)硶錛岃屾槸浜х敓鐩稿簲鐨剆qlexception錛屾鏃跺氨鍙互鎹曡幏寮傚父浠ｇ爜鍧椾腑璋冪敤rollback錛堬級(jí)鏂規(guī)硶鎾ゆ秷浜嬪姟銆?]]>
鍏堢湅涓嬮潰涓ゆ紼嬪簭錛?/font>
紼嬪簭涓錛?/strong>
public class Variable
{
int i;
void test()
{
}
public static void main(String[] args)
{
}
}
紼嬪簭浜岋細(xì)
public class Variable
{
{
}
public static void main(String[] args)
{
}
}
----------------------------------------------------------------------------------------------------------
絎竴涓▼搴忓緢姝ｅ父錛岀紪璇戞椂涓嶄細(xì)鍑洪敊銆傜浜屼釜紼嬪簭緙栬瘧鏃朵細(xì)鎻愮ず濡備笅閿欒錛?/font>
D:\Program\java\test>javac Variable.java
Variable.java:9: 鍙兘灝氭湭鍒濆鍖栧彉閲?i
1 閿欒
涔嬫墍浠ヤ細(xì)鍑虹幇榪欐牱鐨勯敊璇槸鍥犱負(fù)錛?strong style="line-height: normal">鎴愬憳鍙橀噺鏈夐粯璁ゅ鹼紝錛堣final淇グ涓旀病鏈塻tatic鐨勫繀欏繪樉寮忚祴鍊鹼級(jí)錛屽眬閮ㄥ彉閲忎笉浼?xì)鑷姩璧嬪?/strong>
===========================================================
綾諱綋鍒嗕負(fù)涓ら儴鍒嗐傚彉閲忓畾涔夐儴鍒嗘墍瀹氫箟鐨勫彉閲忚縐頒負(fù)綾葷殑鎴愬憳鍙橀噺錛屽湪鏂規(guī)硶浣撲腑瀹氫箟鐨勫彉閲忓拰鏂規(guī)硶鐨勫弬鏁伴兘琚О涓?strong style="line-height: normal">灞閮ㄥ彉閲?/strong>
java涓垚鍛樺彉閲忓拰灞閮ㄥ彉閲忕殑鍖哄埆
1.鎴愬憳鍙橀噺鍙互琚玴ublic錛宲rotect錛宲rivate錛宻tatic絳変慨楗扮淇グ錛岃?/font>灞閮ㄥ彉閲忎笉鑳借鎺у埗淇グ絎﹀強(qiáng)static淇グ錛涗袱鑰呴兘鍙互瀹氫箟鎴恌inal鍨?/font>
2.鎴愬憳鍙橀噺瀛樺偍鍦ㄥ爢錛屽眬閮ㄥ彉閲忓瓨鍌ㄥ湪鏍?/font>
3.瀛樺湪鏃墮棿涓嶅悓
4.鎴愬憳鍙橀噺鏈夐粯璁ゅ鹼紝錛堣final淇グ涓旀病鏈塻tatic鐨勫繀欏繪樉寮忚祴鍊鹼級(jí)錛屽眬閮ㄥ彉閲忎笉浼?xì)鑷姩璧嬪?br style="line-height: normal" />-------------------------------------------------------------------------------------------------------------
欏懼悕鎬濇剰浜?br style="line-height: normal" />浠涔堟槸灞閮紝鏂規(guī)硶鍐呴儴錛屽潡鍐呴儴閮芥槸灞閮紝鎵ц鎸囦護(hù)閫鍑洪偅涓眬閮紝灞閮ㄥ彉閲忚嚜鍔ㄦ竻闄?br style="line-height: normal" />
姣斿鏂規(guī)硶涓紝涓嶇敤璇?br style="line-height: normal" />鍧椾腑
{
銆 int i=0; //榪欐槸涓涓眬閮ㄥ彉閲忥紝瀹冪殑浣滅敤鑼冨洿灝卞湪鍏朵腑銆
}
鎴愬憳鍙橀噺灝變細(xì)娑夊強(qiáng)鍒拌皝鐨勬垚鍛橈紝綾葷殑鎴愬憳錛熷疄渚嬬殑鎴愬憳錛?br style="line-height: normal" />
class A{
int i=0; //瀹炰緥鐨勬垚鍛?br style="line-height: normal" />static j=1;//綾葷殑鎴愬憳
}
static 鐨勫樊鍒紝鏄惁渚濊禆浜庡疄渚嬭屽瓨鍦?br style="line-height: normal" />----------------------------------------------------------------------------------------------------------
姣斿鏂規(guī)硶涓紝涓嶇敤璇?br style="line-height: normal" />鍧椾腑
{
銆 int i=0; //榪欐槸涓涓眬閮ㄥ彉閲忥紝瀹冪殑浣滅敤鑼冨洿灝卞湪鍏朵腑銆
}
鎴愬憳鍙橀噺灝變細(xì)娑夊強(qiáng)鍒拌皝鐨勬垚鍛橈紝綾葷殑鎴愬憳錛熷疄渚嬬殑鎴愬憳錛?br style="line-height: normal" />
class A{
int i=0; //瀹炰緥鐨勬垚鍛?br style="line-height: normal" />static j=1;//綾葷殑鎴愬憳
}
static 鐨勫樊鍒紝鏄惁渚濊禆浜庡疄渚嬭屽瓨鍦?br style="line-height: normal" />----------------------------------------------------------------------------------------------------------
鎴愬憳鍙橀噺錛氫綔涓虹被鐨勬垚鍛樿屽瓨鍦紝鐩存帴瀛樺湪浜庣被涓?/font>
灞閮ㄥ彉閲忥細(xì)浣滀負(fù)鏂規(guī)硶鎴栬鍙ュ潡鐨勬垚鍛樿屽瓨鍦紝瀛樺湪浜庢柟娉曠殑鍙傛暟鍒楄〃鍜屾柟娉曞畾涔変腑銆?/font>
灞閮ㄥ彉閲忓湪浣跨敤鍓嶅繀欏昏紼嬪簭鍛樹富鍔ㄧ殑鍒濆鍖栵紝鍜屾褰㈡垚瀵規(guī)瘮錛岀郴緇熶腑鐨勬垚鍛樺彉閲忓垯浼?xì)琚p葷粺鎻愪緵涓涓粯璁ょ殑鍒濆鍊箋傛墍浠ュ湪璇硶涓婏紝綾葷殑鎴愬憳鍙橀噺鑳藉瀹氫箟鍚庣洿鎺ヤ嬌鐢紝鑰屽眬閮ㄥ彉閲忓湪瀹氫箟鍚庡厛瑕佽祴鍒濆鹼紝鐒跺悗鎵嶈兘浣跨敤銆?/strong>
鎵鏈夌被鐨勬垚鍛樺彉閲忓彲浠ラ氳繃this鏉ュ紩鐢ㄣ傛垚鍛樺彉閲忓張鍒嗘垚淇╀腑綾誨瀷錛氬疄渚嬪彉閲忓拰闈欐佸彉閲忋傞潤鎬佸彉閲忓湪瀹氫箟鏃惰浣跨敤
static鍏抽敭瀛椼?/font>
package com;
public class MemberVariable {
int v_int;
float v_float;
boolean v_boolean;
String v_string;
byte v_byte;
short v_short;
char v_char;
long v_long;
public static void main(String[] args)
{
MemberVariable mv = new MemberVariable();
System.out.println("int鐨勯粯璁ゅ?"+mv.v_int);
System.out.println("float鐨勯粯璁ゅ?"+mv.v_float);
System.out.println("boolean鐨勯粯璁ゅ?"+mv.v_boolean);
System.out.println("string鐨勯粯璁ゅ?"+mv.v_byte);
System.out.println("short鐨勯粯璁ゅ?"+mv.v_short);
System.out.println("char鐨勯粯璁ゅ?"+mv.v_char);
System.out.println("long鐨勯粯璁ゅ?"+mv.v_long);
}
}
int鐨勯粯璁ゅ?0
float鐨勯粯璁ゅ?0.0
boolean鐨勯粯璁ゅ?false
string鐨勯粯璁ゅ?0
short鐨勯粯璁ゅ?0
char鐨勯粯璁ゅ?
]]>
鍥犱負(fù)JAVA鏈変釜灞炰簬鑷繁鐨勮繍琛岀幆澧冿紝鏃細(xì)JAVA铏氭嫙鏈猴紝铏氭嫙鏈轟笌騫沖彴鏃犲叧錛孞AVA浠ｇ爜緇忚繃緙栬瘧鍚庯紝鐩存帴榪愯浜庤櫄鎷熸満涓婏紝瀹炵幇浜嗚法騫沖彴銆?/p>
1.涓轟粈涔堣浣跨敤Java铏氭嫙鏈?/p>
Java璇█鐨勪竴涓潪甯擱噸瑕佺殑鐗圭偣灝辨槸涓庡鉤鍙扮殑鏃犲叧鎬с傝屼嬌鐢↗ava铏氭嫙鏈烘槸瀹炵幇榪欎竴鐗圭偣鐨勫叧閿備竴鑸殑楂樼駭璇█濡傛灉瑕佸湪涓嶅悓鐨勫鉤鍙頒笂榪愯,鑷沖皯闇瑕佺紪璇戞垚涓嶅悓鐨勭洰鏍囦唬鐮併傝屽紩鍏ava璇█铏氭嫙鏈哄悗,Java璇█鍦ㄤ笉鍚屽鉤鍙頒笂榪愯鏃朵笉闇瑕侀噸鏂扮紪璇戙?span style="color: red">Java璇█浣跨敤妯″紡Java铏氭嫙鏈哄睆钄戒簡涓庡叿浣撳鉤鍙扮浉鍏崇殑淇℃伅,浣垮緱Java璇█緙栬瘧紼嬪簭鍙渶鐢熸垚鍦↗ava铏氭嫙鏈轟笂榪愯鐨勭洰鏍囦唬鐮?瀛楄妭鐮?,灝卞彲浠ュ湪澶氱騫沖彴涓婁笉鍔犱慨鏀瑰湴榪愯銆侸ava铏氭嫙鏈哄湪鎵ц瀛楄妭鐮佹椂,鎶婂瓧鑺傜爜瑙ｉ噴鎴愬叿浣撳鉤鍙頒笂鐨勬満鍣ㄦ寚浠ゆ墽琛屻?/strong>
2.璋侀渶瑕佷簡瑙ava铏氭嫙鏈?/p>
Java铏氭嫙鏈烘槸Java璇█搴曞眰瀹炵幇鐨勫熀紜,瀵笿ava璇█鎰熷叴瓚ｇ殑浜洪兘搴斿Java铏氭嫙鏈烘湁涓ぇ姒傜殑浜嗚В銆傝繖鏈夊姪浜庣悊瑙ava璇█鐨勪竴浜涙ц川,涔熸湁鍔╀簬浣跨敤Java璇█銆傚浜庤鍦ㄧ壒瀹氬鉤鍙頒笂瀹炵幇Java铏氭嫙鏈虹殑杞歡浜哄憳,Java璇█鐨勭紪璇戝櫒浣滆呬互鍙?qiáng)瑕佺敤纭欢鑺墖瀹炵幇Java铏氭嫙鏈虹殑浜烘潵璇?鍒欏繀欏繪繁鍒葷悊瑙ava铏氭嫙鏈虹殑瑙勮寖銆傚彟澶?濡傛灉浣犳兂鎵╁睍Java璇█,鎴栨槸鎶婂叾瀹冭璦緙栬瘧鎴怞ava璇█鐨勫瓧鑺傜爜,浣犱篃闇瑕佹繁鍏ュ湴浜嗚ВJava铏氭嫙鏈恒?/p>
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榪唬鍣紙Iterator錛?/font>
銆銆榪唬鍣ㄦ槸涓縐嶈璁℃ā寮忥紝瀹冩槸涓涓璞★紝瀹冨彲浠ラ亶鍘嗗茍閫夋嫨搴忓垪涓殑瀵硅薄錛岃屽紑鍙戜漢鍛樹笉闇瑕佷簡瑙ｈ搴忓垪鐨勫簳灞傜粨鏋勩傝凱浠ｅ櫒閫氬父琚О涓?#8220;杞婚噺綰?#8221;瀵硅薄錛屽洜涓哄垱寤哄畠鐨勪唬浠峰皬銆?/font>
銆銆Java涓殑Iterator鍔熻兘姣旇緝綆鍗曪紝騫朵笖鍙兘鍗曞悜縐誨姩錛?/font>
銆銆(1) 浣跨敤鏂規(guī)硶iterator()瑕佹眰瀹瑰櫒榪斿洖涓涓狪terator銆傜涓嬈¤皟鐢↖terator鐨刵ext()鏂規(guī)硶鏃訛紝瀹冭繑鍥炲簭鍒楃殑絎竴涓厓绱犮傛敞鎰忥細(xì)iterator()鏂規(guī)硶鏄痡ava.lang.Iterable鎺ュ彛,琚獵ollection緇ф壙銆?/font>
銆銆(2) 浣跨敤next()鑾峰緱搴忓垪涓殑涓嬩竴涓厓绱犮?/font>
銆銆(3) 浣跨敤hasNext()媯(gè)鏌ュ簭鍒椾腑鏄惁榪樻湁鍏冪礌銆?/font>
銆銆(4) 浣跨敤remove()灝嗚凱浠ｅ櫒鏂拌繑鍥炵殑鍏冪礌鍒犻櫎銆?/font>
銆銆Iterator鏄疛ava榪唬鍣ㄦ渶綆鍗曠殑瀹炵幇錛屼負(fù)List璁捐鐨凩istIterator鍏鋒湁鏇村鐨勫姛鑳斤紝瀹冨彲浠ヤ粠涓や釜鏂瑰悜閬嶅巻List錛屼篃鍙互浠嶭ist涓彃鍏ュ拰鍒犻櫎鍏冪礌銆?/font>
榪唬鍣ㄥ簲鐢細(xì)
list l = new ArrayList();
l.add("aa");
l.add("bb");
l.add("cc");
for (Iterator iter = l.iterator(); iter.hasNext();) {
String str = (String)iter.next();
System.out.println(str);
}
/*榪唬鍣ㄧ敤浜巜hile寰幆
Iterator iter = l.iterator();
while(iter.hasNext()){
String str = (String) iter.next();
System.out.println(str);
}
*/
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搴忓彿 鏂?娉?璇?鏄?nbsp;
1 class getClass 榪斿洖姝bject鐨勭被
2 int hashCode() 榪斿洖姝bject鐨刪ash鐮?nbsp;
3 boolean equals(Object obj) 鍒ゆ柇姝bject鏄惁涓庢寚瀹氱殑Object瀵硅薄鐩哥瓑
4 void copy(Object obj) 鎶婃Object鎷瘋礉鍒版寚瀹氱殑Object瀵硅薄涓?nbsp;
5 Object clone() 鍏嬮殕姝bject瀵硅薄
6 String toString() 鎶婃Object瀵硅薄杞崲鎴怱tring綾葷殑瀵硅薄
7 void notify() 鍞ら啋涓涓瓑寰呯殑綰跨▼
8 void notifyAll() 鍞ら啋鎵鏈夌瓑寰呯殑綰跨▼
9 void wait(int timeout) 浣夸竴涓嚎紼嬪浜庣瓑寰呯洿鍒皌imeout緇撴潫鎴栬鍞ら啋
10 void wait() 浣夸竴涓嚎紼嬪浜庣瓑寰呯洿鍒拌鍞ら啋
11 void enterMonitor() 瀵筄bject鍔犻攣
12 void exitMonitor() 瀵筄bject寮閿?/p>
鍙傝冨湴鍧錛歨ttp://edu.codepub.com/2009/1018/16461_3.php
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package com;import java.util.Vector;
/*
* 棰樼洰錛氬彜鍏擱棶棰橈細(xì)鏈変竴瀵瑰厰瀛愶紝浠庡嚭鐢熷悗絎?涓湀璧鋒瘡涓?br />
* 鏈堥兘鐢熶竴瀵瑰厰瀛愶紝灝忓厰瀛愰暱鍒扮涓変釜鏈堝悗姣忎釜鏈堝張鐢?br />
* 涓瀵瑰厰瀛愶紝鍏斿瓙鐨勫鍛介兘鏄?0涓湀錛岄棶姣忎釜鏈堢殑鍏斿瓙鎬繪暟涓哄灝戯紵
*/public class Test2{
//瀹瑰櫒錛屽瓨鍌ㄥ瓨?gòu)z葷殑鍏斿瓙瀵?/span> private Vector vector = new Vector(); //緙栧彿 private int No = 0; //鏋勯犲嚱鏁?/span> public Test2()
{
InnerClass ic = new InnerClass(); ic.setNo(No++); vector.add(ic); 
} public void born() { InnerClass ic = new InnerClass(); ic.setNo(No++); vector.add(ic); } //鍐呴儴綾?/span> class InnerClass { private int no = 0; private int life = 0; public void setNo(int no) { this.no = no; } public void setLife(int life) { this.life = life; } public int getNo() { return this.no; } public int getLife() { return this.life; } } public int calculate() { //璁劇疆20涓湀鍐呮瘡涓湀鐨勫厰瀛愭暟 int Max = 20; //鍒濆涓?鍙厰瀛?/span> int sum = 2; while(Max > 0) { for(int i = 0; i < vector.size(); i++) { InnerClass ic = (InnerClass)vector.elementAt(i); int life = ic.getLife(); life++; if(life < 3) { //do nothing ic.setLife(life); } else//鍙互鐢熷皬鍏斿瓙浜?/span> { born(); } if(life >= 10)//蹇呴』姝諱骸 { vector.removeElementAt(i); } } System.out.println("絎?/span>"+(20 - Max) +"鏈堝厰瀛愭暟閲? "+vector.size()*2); Max--; } return 0; } public static void main(String args[]) { Test2 t2 = new Test2(); t2.calculate(); }}
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/*蹇熸帓搴忕畻娉曞疄鐜?br />
* key鐨勫煎湪涓嬈￠掑綊涓槸淇濇寔涓嶅彉鐨勶紝閫掑綊鍑芥暟浣撳氨鏄妸鏁翠釜鏁?br />
* 緇勫皬浜巏ey鐨勫兼斁緗湪key鐨勫乏杈癸紝澶т簬key鐨勬斁緗湪key鐨?br />
* 鍙寵竟錛屾帴鐫鏀瑰彉鏁扮粍闀垮害錛岄掑綊 * */package com;public class Test1{ private int a[] = new int[]{49,38,65,97,76,13,27}; private final int LEFT = 1; private final int RIGHT = 2; private int flag = LEFT; public void fast_sort(int index,int n) { int key = a[index]; int i = index; int j = n; while(i < j) { if(flag == LEFT) { if(key > a[j]) { int temp = a[i]; a[i] = a[j]; a[j] = temp; //key = a[j]; flag = RIGHT; i++; } else { j--; } } else { if(key < a[i]) { int temp = a[i]; a[i] = a[j]; a[j] = temp; //key = a[i]; flag = LEFT; j--; } else { i++; } } } if(index < i-1) { fast_sort(index,i-1); } if(i+1 < n) { fast_sort(i+1,n); } } public void swap(int a,int b) { int tmp = a; a = b; b = tmp; } public void print() { for(int i = 0; i < 7; i++) { System.out.print(a[i]+" "); } } public static void main(String[] args) { Test1 t1 = new Test1(); t1.fast_sort(0,6); t1.print(); }}
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