社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 7569阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。  a)PBC{I  
插入排序: Fp4eGuWH#  
IV;juFw}G  
package org.rut.util.algorithm.support; :ZL;wtT  
\`jFy[(Pa'  
import org.rut.util.algorithm.SortUtil; #nX0xV5=  
/** _)p@;vGV  
* @author treeroot n99:2r_  
* @since 2006-2-2 yEtI5Qk  
* @version 1.0 r ^_8y8&l  
*/ HD?z   
public class InsertSort implements SortUtil.Sort{ AvRZf-Geg  
Crh5^?  
/* (non-Javadoc) ~ygiKsD6b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hx2UDHF  
*/ y.JAtsxD  
public void sort(int[] data) { `r'q(M  
int temp; XJ?|\=]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U}MU>kzb  
} |^C?~g  
} 5H:NY|  
} -]~U_J]  
>pO[ S[  
} j\q1b:pE  
wd~e3%JM  
冒泡排序: EK_NN<So#  
?+D_*'65D  
package org.rut.util.algorithm.support; %MU<S9k  
1sYwFr5  
import org.rut.util.algorithm.SortUtil; HB{w:  
(<s7X$(]e  
/** R +P,kD?  
* @author treeroot %Ub"V\1  
* @since 2006-2-2 C"k8 M\RW?  
* @version 1.0 k7>*fQ89@  
*/ 6.~HbN  
public class BubbleSort implements SortUtil.Sort{ !sEI|47{  
fW!~*Q  
/* (non-Javadoc) )"|'=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (k6=o';y  
*/ /],:sS7  
public void sort(int[] data) { P9:7_Vc  
int temp; !w]!\H  
for(int i=0;i for(int j=data.length-1;j>i;j--){ y1c Aw   
if(data[j] SortUtil.swap(data,j,j-1); 6=Kl[U0Y  
} RZjTUMAz4  
} D(Zux8l  
} _D1bR7  
} ,[,+ _A  
yx3M0Qo  
} g~h`wv'  
"'94E,W  
选择排序: aWm0*W"(@  
YN n,{Xi  
package org.rut.util.algorithm.support; y mY,*Rb  
hZY+dHa]  
import org.rut.util.algorithm.SortUtil; ^USj9HTK  
(NOAHV0H  
/** (-(,~E  
* @author treeroot 6|X  
* @since 2006-2-2 +>KWY PH  
* @version 1.0 U&C\5N]  
*/ z(g4D!  
public class SelectionSort implements SortUtil.Sort { j^llO1i/  
3T# zxu  
/* rVzj LkN^  
* (non-Javadoc) }EE  
* #~I%qa"_pa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [ 8N1tZ{`  
*/ "}*P9-%  
public void sort(int[] data) { jeN_ sm81b  
int temp; ?CAP8_  
for (int i = 0; i < data.length; i++) { w:r0>  
int lowIndex = i; SLSJn))@!  
for (int j = data.length - 1; j > i; j--) { S-gL]r3G8  
if (data[j] < data[lowIndex]) { ?#ndMv!$  
lowIndex = j; aN ). G1  
} L; Nz\sJ  
} #?}k0Y  
SortUtil.swap(data,i,lowIndex); +I/7eIG?|  
} ~d/Doi  
} j8M}*1  
-x_b^)x~b7  
} RSG4A>%!mI  
g (ZeGNV8  
Shell排序: ^> .?k h9z  
MM|&B`v@;  
package org.rut.util.algorithm.support; t&mw@bj  
Z7JI4"  
import org.rut.util.algorithm.SortUtil; *^=`HE89S  
llhJ,wD  
/** 7Nh6 `  
* @author treeroot _I<eJ\  
* @since 2006-2-2 /_xwHiA  
* @version 1.0 mdypZ1f_  
*/ Y{1IRP?S  
public class ShellSort implements SortUtil.Sort{  X4BDl  
pJ6bX4QnDX  
/* (non-Javadoc) WU Q2[)<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ZajQ B  
*/ AQ32rJT8c`  
public void sort(int[] data) { R/~j <.s3P  
for(int i=data.length/2;i>2;i/=2){ I/|)?  
for(int j=0;j insertSort(data,j,i); ~kS~v  
} HO41)m+&  
} p"Oi83w;9  
insertSort(data,0,1); n/p M[gI  
} UN`-;!  
U.crRrN  
/** 1zGEf&rv:  
* @param data (toGU  
* @param j 8{6KWqG\  
* @param i *P$5k1  
*/ i'L7t!f}o  
private void insertSort(int[] data, int start, int inc) {  M)Yu^  
int temp; 5L42'gJ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W ;,Uh E  
} wDem }uO  
} 2xni! *T+  
} IA&((\YC  
Xleoh2&M  
} |5F]y"Nb  
gA2Il8K  
快速排序: . 7g^w+W  
j Z3N+_J1  
package org.rut.util.algorithm.support; -J:](p  
@H@&B`Kd  
import org.rut.util.algorithm.SortUtil; e3F)FTG&  
#fG!dD42  
/** H[*.Jd  
* @author treeroot . m7iXd{  
* @since 2006-2-2 *Y9"-C+  
* @version 1.0 bNFX+GA/  
*/ &Km?(%?  
public class QuickSort implements SortUtil.Sort{ c<A@Op"A  
7_E+y$i=  
/* (non-Javadoc) 6^mO<nB   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HMgZ& v  
*/ WWrD r  
public void sort(int[] data) { !!o 69  
quickSort(data,0,data.length-1); 5A7!Xd  
} YXg:cXE8e  
private void quickSort(int[] data,int i,int j){ _:c8YJEG{  
int pivotIndex=(i+j)/2; < hZA$.W3  
file://swap y`mEsj  
SortUtil.swap(data,pivotIndex,j); *.Y! ZaK  
|B)e! #  
int k=partition(data,i-1,j,data[j]); L G,XhN  
SortUtil.swap(data,k,j); =Q.2:*d.  
if((k-i)>1) quickSort(data,i,k-1); gEO#-tMjOQ  
if((j-k)>1) quickSort(data,k+1,j); l#~Sh3@L(  
{u9(qd;;  
} hAfRHd  
/** )}~k7bb}Y  
* @param data NX@TWBn%  
* @param i vo!:uvy;2  
* @param j KVtnz  
* @return uTbI\iq  
*/ ^-4mZXAy1|  
private int partition(int[] data, int l, int r,int pivot) { AcrbR&cvG  
do{ Mq[;:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6[aCjW  
SortUtil.swap(data,l,r); ?j ?{} Z  
} %a8'6^k  
while(l SortUtil.swap(data,l,r); C(}9  
return l; b\U Q6 V  
} fR5 NiH  
s]5wzbFO  
} @K4} cP  
J0d +q!  
改进后的快速排序: x\3 ` W  
89`AF1  
package org.rut.util.algorithm.support; O *H:CW  
MZ=U} &F  
import org.rut.util.algorithm.SortUtil; xPQO}wKa  
0Ny0#;P  
/** #bsRL8@  
* @author treeroot OZ![9l  
* @since 2006-2-2 e~'y%|D  
* @version 1.0 2i |wQU5w  
*/ ]v rpr%K  
public class ImprovedQuickSort implements SortUtil.Sort { 3hO` GM  
fS1N(RZ 1  
private static int MAX_STACK_SIZE=4096; ~< Gs<c}z  
private static int THRESHOLD=10; 9s73mu`Twg  
/* (non-Javadoc)  R(k6S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z;#}u C  
*/ u\^<V)  
public void sort(int[] data) { I y8gQdI  
int[] stack=new int[MAX_STACK_SIZE]; @o9EX }  
[ ]3xb`<&  
int top=-1; u5V<f;  
int pivot; *vJ1~SRV  
int pivotIndex,l,r; ?F AsV&y  
_? 1<  
stack[++top]=0; !ye%A&  
stack[++top]=data.length-1; `USR]T_`  
9.zy`}  
while(top>0){ 6\4oHRJC  
int j=stack[top--]; >^|\wy  
int i=stack[top--]; S,G=MI"  
+_:Ih,-   
pivotIndex=(i+j)/2; n_$lRX5  
pivot=data[pivotIndex]; ?tqTG2!(  
9VV  
SortUtil.swap(data,pivotIndex,j); H$(%FWzQ%  
Z>o;Yf[  
file://partition |WXu;uf$.u  
l=i-1; >9+@oGe(E  
r=j; ~K:#a$!%,  
do{ ]hF[f|V  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Bwb3@vNA  
SortUtil.swap(data,l,r); %L/Wc,My  
} 3c@Cb`w@  
while(l SortUtil.swap(data,l,r); kL*Q})  
SortUtil.swap(data,l,j); n3isLNvIp  
ETSBd[  
if((l-i)>THRESHOLD){ Tud[VS?99  
stack[++top]=i; &:akom8  
stack[++top]=l-1; fhMtnh:  
} Yx(?KN7V?  
if((j-l)>THRESHOLD){ ptb t  
stack[++top]=l+1; %?X~,  
stack[++top]=j; j,6dGb  
} q$:T<mFK$  
ORcl=Eo>  
} tq<7BO<6  
file://new InsertSort().sort(data); W>wE8? _,  
insertSort(data); ?h1]s&^| 2  
} hP3I_I[qF}  
/** a3HT1!M)  
* @param data UgSSZ05Lq  
*/ LNXhzW   
private void insertSort(int[] data) { MCL?J,1?r  
int temp; Y_Ej-u+>{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^q FFF3<8  
} [m3G%PO@Da  
} ^:{l~~9iKp  
} 5y}}?6n+  
.[= 0(NO  
} -M%n<,XN0  
|;OM,U2  
归并排序: ZN%$k-2  
?Q9/C|  
package org.rut.util.algorithm.support; :'1ePq  
kSB)}q6a  
import org.rut.util.algorithm.SortUtil; L)8;96  
?*[t'D9f-  
/** ofcoNLX5c  
* @author treeroot #`y7L4V*o  
* @since 2006-2-2 =;dupz\7  
* @version 1.0 n U$Lp`  
*/ aina6@S  
public class MergeSort implements SortUtil.Sort{ &IXr*I  
sKn>K/4JZ  
/* (non-Javadoc) JY9Hqf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e#FaK^V  
*/ sw{EV0&>m  
public void sort(int[] data) { -a&wOn-W  
int[] temp=new int[data.length];  <gf:QX!  
mergeSort(data,temp,0,data.length-1); <^n9?[m*  
} \&@Tq-o  
#^!oP$>1  
private void mergeSort(int[] data,int[] temp,int l,int r){ (tyo4Tz1  
int mid=(l+r)/2; g 4Vt"2|  
if(l==r) return ; 1swh7  
mergeSort(data,temp,l,mid); /~J#c=  
mergeSort(data,temp,mid+1,r); lNqXx{!k  
for(int i=l;i<=r;i++){ S3)JEZi  
temp=data; S U2`H7C*  
} V)!Oss;i  
int i1=l; I4qzdD  
int i2=mid+1; \Qu~iB(Y  
for(int cur=l;cur<=r;cur++){  Gp@Y=mU  
if(i1==mid+1) 1MfRF v  
data[cur]=temp[i2++]; P)>WIQSr  
else if(i2>r) sl |S9Ix  
data[cur]=temp[i1++]; o)"}DeV$&  
else if(temp[i1] data[cur]=temp[i1++]; 0)k%nIhj  
else 4?jhZLBU  
data[cur]=temp[i2++]; OaU} 9&  
} rZ:  
} ?kE2 S6j5  
*=^_K`y  
} 'qQ DM_+  
!Aunwq^  
改进后的归并排序: ?D57HCd`n  
\m5:~,p=  
package org.rut.util.algorithm.support; 4\Y=*X  
[RC|W%<Z>  
import org.rut.util.algorithm.SortUtil; lS XhHy  
}! zjj\g^  
/** W!XFaA$  
* @author treeroot a ^4(7  
* @since 2006-2-2 F_YZV)q!W  
* @version 1.0 z7HC6{g%X  
*/ hl6al:Y  
public class ImprovedMergeSort implements SortUtil.Sort { c?jjY4u  
;PG'em  
private static final int THRESHOLD = 10; clG3t eC  
asPD>jc  
/* Lm-}W "7  
* (non-Javadoc) \ E[0KvN;O  
* PCt&66F   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -s:JD J*  
*/ sDJ5'ul  
public void sort(int[] data) { <pK; D  
int[] temp=new int[data.length]; !l.Rv_o<O  
mergeSort(data,temp,0,data.length-1); z_A%>E4  
} 05|t  
Y<a/(`  
private void mergeSort(int[] data, int[] temp, int l, int r) { Og30&a!~F  
int i, j, k; =jg!@H=_i  
int mid = (l + r) / 2; Y*wbFL6`  
if (l == r) i,;Q  
return; .}Bb :*@  
if ((mid - l) >= THRESHOLD) -cY /M~  
mergeSort(data, temp, l, mid); 0A5xG&  
else "=4=Q\0PT  
insertSort(data, l, mid - l + 1); w$61+KHK  
if ((r - mid) > THRESHOLD)  b$rBxe\  
mergeSort(data, temp, mid + 1, r); "]zq<LmX  
else @OwU[\6fc}  
insertSort(data, mid + 1, r - mid); >6jy d{  
R`TM@aaS:  
for (i = l; i <= mid; i++) { [>C^ 0\Z~  
temp = data; w:z_EV!&  
} V!]e#QH;  
for (j = 1; j <= r - mid; j++) { -J? df  
temp[r - j + 1] = data[j + mid]; f4@Dn >BJ  
} {a% T <WW  
int a = temp[l]; &S3szhe  
int b = temp[r]; El"XF?OgpP  
for (i = l, j = r, k = l; k <= r; k++) { DU}q4u@ )  
if (a < b) { !X[lNt O  
data[k] = temp[i++]; IO v4Zx<)  
a = temp; p)TH^87  
} else { ~a/yLI"'g  
data[k] = temp[j--]; !B-&I E?  
b = temp[j]; `DWzp5Ax  
} P d*}0a~  
} 3bE^[V8/  
} \?g)jY  
H26 j]kY  
/** x%cKTpDh!  
* @param data %pTbJaM\U  
* @param l 4I{|M,+  
* @param i Eq'{uV:  
*/ gK#a C [  
private void insertSort(int[] data, int start, int len) { dQ;rO$c o  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); M}38uxP  
} ^@{'! N  
} ^0X86  
} ] +Gi~  
} j q1qj9KZ  
W]6Y buP:  
堆排序: 8)R )h/E>  
9H.E15B  
package org.rut.util.algorithm.support; Z)6bqU<LQE  
$Fd9iJ!k  
import org.rut.util.algorithm.SortUtil; H Qf[T@  
 kQX,MP(  
/** G=~T)e  
* @author treeroot U%w-/!p  
* @since 2006-2-2 wond>m 3  
* @version 1.0 ce+\D'q[  
*/ iW)FjDTP  
public class HeapSort implements SortUtil.Sort{ vcV=9q8P1  
CHBCi) '6h  
/* (non-Javadoc) b%|%Rek8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8V~w3ssz  
*/ XPWK"t0 1  
public void sort(int[] data) { mYa0_P%^  
MaxHeap h=new MaxHeap(); puMpUY  
h.init(data); ';b/D   
for(int i=0;i h.remove(); (qB$I\  
System.arraycopy(h.queue,1,data,0,data.length); QdDdrR^&  
} 8i X?4qj{P  
N15{7 ,   
private static class MaxHeap{ 1s!hl{n<~  
H6'xXS  
void init(int[] data){ w="I*7c@  
this.queue=new int[data.length+1]; n"_EDb  
for(int i=0;i queue[++size]=data; ;=UrIA@y;=  
fixUp(size); W P.6ea7k  
} 4(B,aU>y  
} 2psI\7UjA]  
m$[ \(Z(/  
private int size=0; ih1SN,/  
q;B-np?U  
private int[] queue; '1.T-.4>&  
{u9VHAXCf  
public int get() { V3I&0P k  
return queue[1]; O a-Z eCq  
} 9"MC<  
E;-R<X5n  
public void remove() { ^dqyX(  
SortUtil.swap(queue,1,size--); .F 3v)  
fixDown(1); j##IJm  
} ]9A9q<lZ  
file://fixdown 6aMqU?-  
private void fixDown(int k) { U_M> Q_r(  
int j; $C^94$W  
while ((j = k << 1) <= size) { S=M$g#X`5  
if (j < size %26amp;%26amp; queue[j] j++; &x;v&  
if (queue[k]>queue[j]) file://不用交换 <R]?8L0{h  
break; B8B^@   
SortUtil.swap(queue,j,k); ^>k[T.  
k = j; wU+ofj; +I  
} !;iySRZr  
} \>9%=32u.  
private void fixUp(int k) { K*CO%:,-  
while (k > 1) { jQsucs5$h  
int j = k >> 1; 4y)"IOd#|  
if (queue[j]>queue[k]) oD!72W_:  
break; N,Y<mX  
SortUtil.swap(queue,j,k); *K m%Vl  
k = j; 6 D~b9 e  
} 4[+n;OI  
} -?'u"*#1,  
m=j7 vb  
} ds7I .Q'  
2ht<"  
} dwJ'hg  
MdEZ839J  
SortUtil: X g.\B1d  
r7w&p.?  
package org.rut.util.algorithm; >Qt#6X|  
m 0un=>{  
import org.rut.util.algorithm.support.BubbleSort; 6!b96bV  
import org.rut.util.algorithm.support.HeapSort; 6,s@>8n  
import org.rut.util.algorithm.support.ImprovedMergeSort; \zgRzO'N  
import org.rut.util.algorithm.support.ImprovedQuickSort; gpE5ua&  
import org.rut.util.algorithm.support.InsertSort; ot-!_w<  
import org.rut.util.algorithm.support.MergeSort; $IB@|n  
import org.rut.util.algorithm.support.QuickSort; "R):B~8|H{  
import org.rut.util.algorithm.support.SelectionSort; O!/J2SfuDH  
import org.rut.util.algorithm.support.ShellSort; bO^%#<7  
=_L"x~0I-  
/** 1Qf5H!5vx  
* @author treeroot Mgf80r=  
* @since 2006-2-2 &)\0mpLK9  
* @version 1.0 JJ7-$h'0q  
*/ QD / | zi  
public class SortUtil { \? MuORg  
public final static int INSERT = 1; eFZ`0V0  
public final static int BUBBLE = 2; f9OVylm  
public final static int SELECTION = 3; VbA#D4;  
public final static int SHELL = 4; 9{ciD "!&V  
public final static int QUICK = 5; 6RzTSb  
public final static int IMPROVED_QUICK = 6; S/7D}hJ  
public final static int MERGE = 7; vbFY}  
public final static int IMPROVED_MERGE = 8; 8+gSn  
public final static int HEAP = 9; G ytI_an8  
> -k$:[l  
public static void sort(int[] data) { m,)Re8W-  
sort(data, IMPROVED_QUICK); (Dc dR:/=  
} N}.h_~6  
private static String[] name={ p3sz32RX  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a>""MC2  
}; HykJ}ezX4  
B`T9dL[E4  
private static Sort[] impl=new Sort[]{ [f- #pew  
new InsertSort(), Cn+TcdHX  
new BubbleSort(), c;(}Ih(#  
new SelectionSort(), ;k!Ej-(  
new ShellSort(), rQ~%SUM7  
new QuickSort(), 63F0Za}h  
new ImprovedQuickSort(), SM0=  
new MergeSort(), uQpV1o5iA  
new ImprovedMergeSort(), _Se>X=  
new HeapSort() &/a/V  
}; V&\ZqgDF  
c;wt9J.f  
public static String toString(int algorithm){ gsT%_2>CL  
return name[algorithm-1]; 0=-h9W{zI  
} dd98v Vj  
yK[ ~(!c5  
public static void sort(int[] data, int algorithm) { !cWKY \lpv  
impl[algorithm-1].sort(data); U/{cYX  
} )RA7Y}e|m  
]+fL6"OD/2  
public static interface Sort { ){8^l0b  
public void sort(int[] data); ~#) DJ  
} ?t?!)#X  
Vf O0 z5&  
public static void swap(int[] data, int i, int j) { D>LdDhNn,`  
int temp = data; X0P<ifIv  
data = data[j]; ~#(bX]+A  
data[j] = temp; mufF_e)  
} Z\LW<**b  
} (QqKttL:  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
欢迎提供真实交流,考虑发帖者的感受
认证码:
验证问题:
10+5=?,请输入中文答案:十五