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
  • 7314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。 E'DHO2 Y  
插入排序: 7g(Z @  
uHSnZ"#  
package org.rut.util.algorithm.support; qx[c0X!  
ektU,Oo  
import org.rut.util.algorithm.SortUtil; )3:0TFS}}k  
/** >>$`]]7  
* @author treeroot @;P ;iI  
* @since 2006-2-2 W Eif&<Y  
* @version 1.0 pC>h"Hy  
*/ CCe>*tdf  
public class InsertSort implements SortUtil.Sort{ |&rCXfC  
BB(6[V"SV  
/* (non-Javadoc) *Z_4bR4Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D\-\U E/  
*/ o#,^7ln  
public void sort(int[] data) { xi(\=LbhY  
int temp; o25rKC=o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Lm2) 3;ei  
} UWvVYdy7  
} ]{\ttb%GX  
} [A!w  
;ISnI  
} T TN!$?G3  
9"]#.A^Q*  
冒泡排序: ucx02^uA  
}}QR'  
package org.rut.util.algorithm.support; 3>@VPMi  
zZ8*a\  
import org.rut.util.algorithm.SortUtil; {XmCG%%L  
4F6aPo2  
/** tj[E!  
* @author treeroot &~Hed_  
* @since 2006-2-2 !EhKg)y=  
* @version 1.0 3wq<@dRv4  
*/ -m%`Di!E  
public class BubbleSort implements SortUtil.Sort{ ` z0q:ME  
/GC&@y0yi  
/* (non-Javadoc) F9u?+y-xb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5MAfuHq^  
*/ ^F+7<$ 2  
public void sort(int[] data) { TjEXR$:<  
int temp; =#S.t:HQ*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ JN|6+.GG  
if(data[j] SortUtil.swap(data,j,j-1); kY~4AH  
} j/*1zu8Y  
} *b. >  
} nJ2x;';lA  
} PU/<7P*  
96(Mu% l  
} 6^ [ 4.D  
|2u=3#Jp  
选择排序: ?!U[~Gq  
@I`^\oJ  
package org.rut.util.algorithm.support; hDW!pnj1  
|j`73@6   
import org.rut.util.algorithm.SortUtil; c Rq2 re  
VIP7j(#t_g  
/** `Zm6e!dH-  
* @author treeroot 1^}I?PbqV  
* @since 2006-2-2 o'!=x$Ky  
* @version 1.0 1 &9|~">{C  
*/ Q,&Li+u|  
public class SelectionSort implements SortUtil.Sort { MxIa,M <  
Q S&B"7;g  
/* rTIu'  
* (non-Javadoc) 6(f 'P_*  
* VWvSt C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LZRg%3.E  
*/ xf]K  
public void sort(int[] data) { ]$@D=g,r  
int temp; ;mG*Rad  
for (int i = 0; i < data.length; i++) { `.W2t5 Y  
int lowIndex = i; `x`[hJ?i  
for (int j = data.length - 1; j > i; j--) { DVL-qt\;n  
if (data[j] < data[lowIndex]) { E5bVCAz  
lowIndex = j; ]]O( IC  
} &3[oM)-V  
} ^es]jng`  
SortUtil.swap(data,i,lowIndex); W-=6:y#A  
} tNi>TkC}`  
} `x9Eo4(/  
!wfW0?eu  
} 9Ux(  
MYWkEv7  
Shell排序: =1l6( pJ  
rG-T Dm  
package org.rut.util.algorithm.support; .:r~?$(  
?dgyi4J?=`  
import org.rut.util.algorithm.SortUtil; 0D s3wNz  
20;9XJmjl  
/** `r`8N6NQ&]  
* @author treeroot :}lqu24K  
* @since 2006-2-2 X g6ezlW  
* @version 1.0 $')C&  
*/ y2G Us&09  
public class ShellSort implements SortUtil.Sort{ vjuFVJwL  
50^ux:Uv+N  
/* (non-Javadoc)  p+h$]CH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D(AH3`*|#  
*/ 6}"c4 ^k6  
public void sort(int[] data) { dI{DiPho  
for(int i=data.length/2;i>2;i/=2){ ~|V^IJZ22  
for(int j=0;j insertSort(data,j,i); faDSyBLo  
} L (Y1ey9x  
} ai{>rO3 }I  
insertSort(data,0,1); l#'V SFm&  
} 08`|C)Z!  
#Vq9 =Q2  
/** :aesG7=O  
* @param data E#B-JLMGl  
* @param j kJWg},-\  
* @param i 7>JTQ CJ  
*/ d~LoHp  
private void insertSort(int[] data, int start, int inc) { ')y2W1  
int temp; 2?JV "O=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Lgg,K//g  
} ;A*SuFbV  
} &|/_"*uM  
} L8VOiK=,  
?h= n5}Y  
} v`HE R6  
nI\6a G?`  
快速排序: Y}:~6`-jj  
k{}> *pCU  
package org.rut.util.algorithm.support; gxv^=;2C  
m\L`$=eO8  
import org.rut.util.algorithm.SortUtil; JE?rp1.  
3e_tT8  
/** /Nf{;G!kg  
* @author treeroot ;w7mr1  
* @since 2006-2-2 y6XOq>  
* @version 1.0 O$,F ga  
*/ )U@9dV7u  
public class QuickSort implements SortUtil.Sort{ utlr|m Xc  
53HA6:Q[  
/* (non-Javadoc) i(}Pr A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D|:'|7l W  
*/ u"[f\l  
public void sort(int[] data) { (%my:\>l  
quickSort(data,0,data.length-1); 6Y9N= \`  
} Kxr@!m"  
private void quickSort(int[] data,int i,int j){ x'GB#svi  
int pivotIndex=(i+j)/2; !+GYu;_  
file://swap T8XrmR&?PX  
SortUtil.swap(data,pivotIndex,j); C= ~c`V5>r  
=&}@GsXdo  
int k=partition(data,i-1,j,data[j]); i\i%Wi Rl  
SortUtil.swap(data,k,j); ".?4`@7F\  
if((k-i)>1) quickSort(data,i,k-1); Pq;OShU_  
if((j-k)>1) quickSort(data,k+1,j); Ar`+x5  
8dGsV5"*  
} BI1M(d#1L"  
/** ,>;21\D  
* @param data aZFpt/.d  
* @param i $D bnPZ2$  
* @param j *WwM"NFHDd  
* @return W0qR? jc  
*/ rq+_ [!  
private int partition(int[] data, int l, int r,int pivot) { xe@1H\7:  
do{ 5'AP:3Gf"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nBh+UT}  
SortUtil.swap(data,l,r); 2Ez<Iw  
} =)a24PDG  
while(l SortUtil.swap(data,l,r); #[+# bw_6  
return l; ]I?.1X5d0  
} <DF3!r  
HBlk~eZ  
} |cvU2JI@  
LP2~UVq  
改进后的快速排序: [h/T IGE\  
 ;Shu  
package org.rut.util.algorithm.support; lA^1}  
_D '(R  
import org.rut.util.algorithm.SortUtil; [&)]-2w2  
OUX7 *_  
/** v=U<exM6%  
* @author treeroot ]G/m,Zv*:  
* @since 2006-2-2 /0s1;?  
* @version 1.0 3$|/7(M&DA  
*/ Pvxb6\G&d  
public class ImprovedQuickSort implements SortUtil.Sort { -`O{iHfM|P  
f1 ;  
private static int MAX_STACK_SIZE=4096; %w`d  
private static int THRESHOLD=10; m'o dVZ7  
/* (non-Javadoc) .wfydu)3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SE'Im  
*/ d:=' Xs  
public void sort(int[] data) { /9`4f"  
int[] stack=new int[MAX_STACK_SIZE]; u47<J?!Q  
HIg2y  
int top=-1; '7iz5wC#  
int pivot; ~Amq1KU*Z  
int pivotIndex,l,r; BoD{fg  
D6"=2XR4n  
stack[++top]=0; -l^<[%  
stack[++top]=data.length-1; j*{0<hZb}  
!~ox;I}S  
while(top>0){ >3 o4 U2  
int j=stack[top--]; p~D}Iyww1_  
int i=stack[top--]; djd/QAfSC  
)U/jD  
pivotIndex=(i+j)/2; R9J!}az'  
pivot=data[pivotIndex]; ZpTDM1ro  
#Hw|P  
SortUtil.swap(data,pivotIndex,j); ?CpVA  
E C#0-,z  
file://partition d"wA"*8~y  
l=i-1; T{{:p\<]_  
r=j; 6=iHw 24  
do{ BWt`l,nF  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Y;i=c6  
SortUtil.swap(data,l,r); o) )` "^  
} }EK{UM9y  
while(l SortUtil.swap(data,l,r); <,i4Ua  
SortUtil.swap(data,l,j); 5'2kP{;  
KC/O EJ`  
if((l-i)>THRESHOLD){ {6i|"5_j  
stack[++top]=i; ~?Zib1f)  
stack[++top]=l-1; PR:k--)D  
} oC0ndp~+&  
if((j-l)>THRESHOLD){ 56V|=MzX]  
stack[++top]=l+1; HD j6E"  
stack[++top]=j; FI.te3i?7  
} fBSa8D3}`  
 a"Qf  
} @]3 \*&R}  
file://new InsertSort().sort(data); Xw H>F7HPe  
insertSort(data); dC=[o\  
} t7=D$ua  
/** \Kl20?  
* @param data S?~0)EXj(  
*/ gx&es\  
private void insertSort(int[] data) { y|`-)fY  
int temp; JEjxY&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \!u<)kkyT  
} Lqgrt]L_"  
} mLCD N1UO{  
} N>mW64_H)  
( t&RFzE?G  
} dGKo!;7{  
\Y P,}_ ~  
归并排序: \xYVnjG,  
q*I*B1p[m  
package org.rut.util.algorithm.support; q}U+BTCZ  
qBEp |V  
import org.rut.util.algorithm.SortUtil; `YhGd?uu$  
F8pA)!AH  
/** m:@y_:X0  
* @author treeroot b:==:d:0s  
* @since 2006-2-2 zPt<b!q  
* @version 1.0 &Ok1j0~~  
*/ Yy*=@qu>g  
public class MergeSort implements SortUtil.Sort{ lQ 8hY$  
K%q5:9m  
/* (non-Javadoc) Exb64n-_=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HTQZIm  
*/ &@iOB #H  
public void sort(int[] data) { ee {ToK  
int[] temp=new int[data.length]; Hw \of  
mergeSort(data,temp,0,data.length-1); g~hMOI?KK^  
} bzr2Zj{4  
\n<! ld  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3h7RQ:lUi  
int mid=(l+r)/2; -.Wcz|  
if(l==r) return ; -^_2{i  
mergeSort(data,temp,l,mid); gN/<g8  
mergeSort(data,temp,mid+1,r); Pn,I^Ej.  
for(int i=l;i<=r;i++){ a?[[F{X9^  
temp=data; >Hf{Mx{<  
} 3FBLCD3  
int i1=l; @KQ>DBWQM  
int i2=mid+1; *yBVZD|?H  
for(int cur=l;cur<=r;cur++){ 7FC!^)x1  
if(i1==mid+1) hRf l\Q[  
data[cur]=temp[i2++]; 8$IKQNS  
else if(i2>r)  ?eS;Yc  
data[cur]=temp[i1++]; 1K Vit{  
else if(temp[i1] data[cur]=temp[i1++]; VZ9 p "  
else VYG@_fd!x  
data[cur]=temp[i2++]; A \/~u"Y  
} P< OH{l  
} }UPC~kC+Z  
h>pu^ `hk  
} Rqe. =+Qs  
ajSB3}PN  
改进后的归并排序: #W~jQ5NS\  
SkjG}  
package org.rut.util.algorithm.support; Ark]>4x>  
5r5on#O&  
import org.rut.util.algorithm.SortUtil; ~/rD _K  
aC1z.?!U  
/** sxT&T=7  
* @author treeroot }#ink4dK:  
* @since 2006-2-2 $Cz2b/O  
* @version 1.0 |[`YGA4  
*/ h*Fv~j'p  
public class ImprovedMergeSort implements SortUtil.Sort { )LGVR 3#  
z/\OtYz  
private static final int THRESHOLD = 10; i:s=  
,`f]mv l  
/* u+8"W[ZULq  
* (non-Javadoc) M'%4BOpI6`  
*  }u8(7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7r;1 6"  
*/ y8YsS4E^Q  
public void sort(int[] data) { ~vXbh(MX  
int[] temp=new int[data.length];  \ ca<L  
mergeSort(data,temp,0,data.length-1); 5aaM;45C  
} vn}m-U XA*  
%`i*SF(gV  
private void mergeSort(int[] data, int[] temp, int l, int r) { r^5%0_F]  
int i, j, k; Y%;J/4dd  
int mid = (l + r) / 2;  E0!d c  
if (l == r) ,zgz7  
return; Bz/ba *  
if ((mid - l) >= THRESHOLD) '&cH,yc;b  
mergeSort(data, temp, l, mid); @T^FOTW  
else /ZyMD(_J  
insertSort(data, l, mid - l + 1); ,lH }Ba02F  
if ((r - mid) > THRESHOLD) GL?b!4xx  
mergeSort(data, temp, mid + 1, r); e|oMbTZ5m  
else X):7#x@uy  
insertSort(data, mid + 1, r - mid); 1 ^|#QMT  
0si1:+t-[+  
for (i = l; i <= mid; i++) { d.? }>jl  
temp = data; Q/g!h}>(.  
} Q yw@ r  
for (j = 1; j <= r - mid; j++) { !=eNr<:V.  
temp[r - j + 1] = data[j + mid]; <|l}@\iRX  
} KO "/  
int a = temp[l]; e*Wk;D&  
int b = temp[r]; X\`']\l  
for (i = l, j = r, k = l; k <= r; k++) { -6+7&.A+  
if (a < b) { 5, $6mU#=  
data[k] = temp[i++]; ;qaPK2 a8  
a = temp; pl).U#7`  
} else { wH?)ZL  
data[k] = temp[j--]; t,r]22I,`  
b = temp[j]; / <)Vd  
} l7g'z'G  
} TVcA%]y{;  
} d3:GmB .  
l Xa/5QKC  
/** X7!q/1$J  
* @param data t8-P'3,Q$  
* @param l  !64Tx  
* @param i Tc(=J7*r&  
*/ (T*$4KGV  
private void insertSort(int[] data, int start, int len) { s)- ;74(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4 -.W~C'Q  
} s $Vv  
} K.xABKPVc  
} 4`i8m  
} Wu 0:X*>}p  
To(I<W|{  
堆排序: n1PptR  
{3x>kRaKci  
package org.rut.util.algorithm.support; *,JE[M  
$~1vXe  
import org.rut.util.algorithm.SortUtil; l(NQk> w  
'?Dxe B  
/** ai-s9r'MI?  
* @author treeroot b;b,t0wS  
* @since 2006-2-2 $Wj= V  
* @version 1.0 Dsm1@/"i|7  
*/ ?)1Y|W'Rv  
public class HeapSort implements SortUtil.Sort{ ZjmQ  
w*6b%h%ww  
/* (non-Javadoc) YJv$,Z&;HO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gbuh04#~  
*/ CIIjZ)T  
public void sort(int[] data) { i3,.E]/wX@  
MaxHeap h=new MaxHeap(); upuN$4m&{  
h.init(data); 1x|3|snz)  
for(int i=0;i h.remove(); '|4+< #  
System.arraycopy(h.queue,1,data,0,data.length); O#U maNj/  
} 5VV}wR  
@N4~|`?U  
private static class MaxHeap{ rk8pL[|  
a%r!55.   
void init(int[] data){ #`u}#(  
this.queue=new int[data.length+1]; S[K5ofV  
for(int i=0;i queue[++size]=data; J.yM@wPS>  
fixUp(size); P{9:XSa%  
} U:TkO=/>:  
} fLe~X!#HF  
ZK]qQrIwy  
private int size=0; *Y(59J2  
ARu_S B  
private int[] queue; }i!+d,|f  
6o^>q&e}%  
public int get() { SxY z)aF~  
return queue[1]; 8Q Try%  
} R0=f`;  
y5sH7`2+5  
public void remove() { zgGysjV  
SortUtil.swap(queue,1,size--); =c@hE'{  
fixDown(1); uU 7 <8G  
} ]pvHsiI:  
file://fixdown Leb Kzqe  
private void fixDown(int k) { yF)J7a:U  
int j; I#MPJ@*WT  
while ((j = k << 1) <= size) { tKt}]KHV  
if (j < size %26amp;%26amp; queue[j] j++; sg,\!'  
if (queue[k]>queue[j]) file://不用交换 ^# $IoW  
break; ~ =u8H  
SortUtil.swap(queue,j,k); :Vxt2@p{  
k = j; ]S%_&ZMCM  
} b;VIR,2  
} &^$@LH3  
private void fixUp(int k) { |X=p`iz1&  
while (k > 1) { {O>Td9  
int j = k >> 1; fZ-"._9UyH  
if (queue[j]>queue[k]) f$>_>E  
break; :Hq%y/  
SortUtil.swap(queue,j,k); iOZ9A~Ywy  
k = j; M1eh4IVE?  
} h^(U:M=A  
} (LK@w9)i;  
7;p/S#P:  
} 'yCVB&`b  
p1'q{E+o*  
} G T~rr*X  
Y A,. C4=s  
SortUtil: s#5#WNzP  
GgE g(AT  
package org.rut.util.algorithm; h1q 3}-  
!!L'{beF  
import org.rut.util.algorithm.support.BubbleSort; [,U l  
import org.rut.util.algorithm.support.HeapSort; Z><+4 '  
import org.rut.util.algorithm.support.ImprovedMergeSort; (72%au  
import org.rut.util.algorithm.support.ImprovedQuickSort; Ly(iq  
import org.rut.util.algorithm.support.InsertSort; GOxP{d?  
import org.rut.util.algorithm.support.MergeSort; N|mggz  
import org.rut.util.algorithm.support.QuickSort; aO$0[-A  
import org.rut.util.algorithm.support.SelectionSort; U>kaQ54/  
import org.rut.util.algorithm.support.ShellSort; r4u ,I<ZbH  
<q'?[aKvR  
/** YN)qMI_ `A  
* @author treeroot Gd C=>\]  
* @since 2006-2-2 \ 3E%6L  
* @version 1.0 lFuW8G,-f@  
*/ JQ ?8yl  
public class SortUtil { F$i50s  
public final static int INSERT = 1; 1?)h-aN  
public final static int BUBBLE = 2; L2Cb/!z`c  
public final static int SELECTION = 3; ?4%#myO3a  
public final static int SHELL = 4; .&5 3sJ0{  
public final static int QUICK = 5; W/RB|TMT  
public final static int IMPROVED_QUICK = 6; %l%ad-V  
public final static int MERGE = 7; UHV"<9tk  
public final static int IMPROVED_MERGE = 8; }qGd*k0F0  
public final static int HEAP = 9; (Qw>P42J  
M`7lYw\Or!  
public static void sort(int[] data) { "$5cKbJ  
sort(data, IMPROVED_QUICK); DCa=o  
} Foj|1zJS_  
private static String[] name={ *B4OvHi)'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rLeQB p'  
}; %*q^i}5)E  
w[vccARQ  
private static Sort[] impl=new Sort[]{ e2%mD.I  
new InsertSort(), u=PLjrB~}  
new BubbleSort(), !`H!!Kg0L  
new SelectionSort(), iqoMQ7%  
new ShellSort(), uCt?(E>  
new QuickSort(), '4GN%xi  
new ImprovedQuickSort(), 'o= DGm2H  
new MergeSort(), /V/ )A\g  
new ImprovedMergeSort(), kxrYA|x  
new HeapSort() + i /4G.=*  
}; 6[FXgCb  
wKcuIc$  
public static String toString(int algorithm){ HOPl0fY$L  
return name[algorithm-1]; jU 3ceXV  
} //3fgoly  
s,mt%^x[  
public static void sort(int[] data, int algorithm) { "Qc4v@~)  
impl[algorithm-1].sort(data); ;*Mr(#R  
} )yz)Fw|&  
u!HbS*jqq  
public static interface Sort { Nw ,|4S  
public void sort(int[] data); 1TzwXX7  
} $WRRCB/A6  
^;{uop"DS  
public static void swap(int[] data, int i, int j) { ]:n9MFv  
int temp = data; .f[z_% ar  
data = data[j]; pL*aU=FjQ  
data[j] = temp; hVz]' ,  
} !u:;Ew  
} $E8}||d  
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