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[JAVA]用Java实现的各种排序

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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。 ~D_ rZ&  
插入排序: M;PlSb  
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package org.rut.util.algorithm.support; K"I{\/x@  
#4lHaFq  
import org.rut.util.algorithm.SortUtil; s)Gb!-``  
/** 'N|2vbi<  
* @author treeroot C?(y2p`d\  
* @since 2006-2-2 xpz`))w  
* @version 1.0 qs "s/$  
*/ E s:5yX!  
public class InsertSort implements SortUtil.Sort{ DbQBVy  
fGG 9zB6  
/* (non-Javadoc) hsz$S:am  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) du8!3I  
*/ Cl{{H]QngX  
public void sort(int[] data) { Q>V?w gZ  
int temp; o KlF5I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U#iT<#!l2  
} VrudR#q  
} jigbeHRy  
} y]MWd#U  
[ns&Y0Y`t  
} _3I3AG0e  
@X|ok*v`  
冒泡排序: "wF*O"WQo  
C\J@fpH(t`  
package org.rut.util.algorithm.support; G1A$PR  
Dn: Yi8=  
import org.rut.util.algorithm.SortUtil; KZi+j#7O  
)'w]YIv9  
/** @ljZw(  
* @author treeroot 0:HC;J  
* @since 2006-2-2 2-p8rGI_F  
* @version 1.0 .5Q5\qc=  
*/ x}uwWfe3  
public class BubbleSort implements SortUtil.Sort{ [;Vi~$p|Eo  
(tTLK0V-|3  
/* (non-Javadoc) 1X Q87~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E8+8{ #f;  
*/ vsjM3=  
public void sort(int[] data) { =SA 4\/  
int temp; B>R* f C@g  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 20n%o&kG]8  
if(data[j] SortUtil.swap(data,j,j-1); VN?<[#ij  
} $B*qNYpPy.  
} ,I("x2  
} <.: 5Vx(Aw  
} }1l}-w`F  
nIG[{gGX  
} Mp!2`4rD  
/95FDk>  
选择排序: G &m>Ov$#&  
)0'Y et}  
package org.rut.util.algorithm.support; >h|UCJ1 `  
HE9. k.sS  
import org.rut.util.algorithm.SortUtil; U9bFUK/z  
TeOFAIU  
/** FW/6{tm  
* @author treeroot cPx66Dh&  
* @since 2006-2-2 "pR $cS  
* @version 1.0 <<i=+ed8eP  
*/ x/pC%25  
public class SelectionSort implements SortUtil.Sort { gX/|aG$a!U  
KwY`<t1lA;  
/* #d3[uF]OmW  
* (non-Javadoc) AX/=}G  
* \XZU'JIO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _.u~)Q`6  
*/  GE{8I<7c  
public void sort(int[] data) { % E<FB;h  
int temp; Kw)C{L5a  
for (int i = 0; i < data.length; i++) { w;@`Yi.WQ  
int lowIndex = i; .0 rJIO  
for (int j = data.length - 1; j > i; j--) { c"6Kd$?M  
if (data[j] < data[lowIndex]) { $XU-[OF%:9  
lowIndex = j; D 86 K$IT  
} "#[o?_GaJ  
} h]G6~TYI5  
SortUtil.swap(data,i,lowIndex); 3 t~X:  
} T]5U_AI@  
} Lx9hq7<  
AEBw#v!,o  
} *9\oD~2Y  
IO?~b XP  
Shell排序: [I#Q  
;""-[4C  
package org.rut.util.algorithm.support; =iA"; x  
r9U[-CX:"  
import org.rut.util.algorithm.SortUtil; wCqE4i  
K+(m'3`  
/** c`Lpqs`  
* @author treeroot vbW\~xf  
* @since 2006-2-2 :/n ?4K^  
* @version 1.0 #MmmwPB_  
*/ J$o[$G_Z  
public class ShellSort implements SortUtil.Sort{ x'VeL|  
Yqq$kln  
/* (non-Javadoc) QSlf=VK*y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :/I={)5  
*/ n:%'{}Jw  
public void sort(int[] data) { aTmX!!  
for(int i=data.length/2;i>2;i/=2){ P#M<CG9  
for(int j=0;j insertSort(data,j,i); mE)x7  
} M$DwQ}Z  
} 1KfJl S+  
insertSort(data,0,1); #$9U=^Z[  
} 2nOe^X!*  
C={sE*&dYX  
/**  p1[WGeV  
* @param data f)!{y> Q  
* @param j &q kl*#]  
* @param i bYRQI=gW':  
*/ 0ll,V  
private void insertSort(int[] data, int start, int inc) { NpjsZcA  
int temp; 9}7oKlyk  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *R1d4|/G  
} XmE_F  
} ^;v.ytO*  
} *GY,h$Ul  
>-o?S O(M,  
} 'Y6(4|w (  
KV3+}k  
快速排序: GLoL4el  
.>cL/KaP  
package org.rut.util.algorithm.support; 2l;ge>D J  
LS?` {E   
import org.rut.util.algorithm.SortUtil; 0:nt#n~_  
I+-Rs2wb  
/** IrVM|8vT3  
* @author treeroot |G5=>W  
* @since 2006-2-2 ?L.p9o-S0  
* @version 1.0 .-gm"lB  
*/ LQuYCfj|  
public class QuickSort implements SortUtil.Sort{ B%?|br  
(rCPr,@0  
/* (non-Javadoc) D0"yZp}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #&HarBxx  
*/ -bG#h)yj  
public void sort(int[] data) { $txWVjR?\  
quickSort(data,0,data.length-1); )Q N=>J  
} _'o^@v:  
private void quickSort(int[] data,int i,int j){ v: !7n  
int pivotIndex=(i+j)/2; \p_8YC  
file://swap ,& {5,=  
SortUtil.swap(data,pivotIndex,j); `OF g.R|  
l"V8n BR`  
int k=partition(data,i-1,j,data[j]); D(2kb  
SortUtil.swap(data,k,j); =h1 QN  
if((k-i)>1) quickSort(data,i,k-1); b]s%B.h  
if((j-k)>1) quickSort(data,k+1,j); UBpM8/U  
%QlBFl0a  
} ;U5x'}%0]  
/** U~QCN[gh  
* @param data Ix l"'Q_z  
* @param i ~vvQz"  
* @param j y0Q/B|&[  
* @return #gr+%=S'6C  
*/ m/"=5*pA  
private int partition(int[] data, int l, int r,int pivot) { s`7 _J9  
do{ =Am*$wGI  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D6 @4  
SortUtil.swap(data,l,r); >H]|A<9u(  
} Q{)F$]w  
while(l SortUtil.swap(data,l,r); CuGOjQ-k~  
return l; A/W7 ;D  
} J0Rz.=Y  
ps4Wwk(  
} 4 w/t$lR  
?F_;~  
改进后的快速排序: /R+]}Lt~%*  
Ag hj)V  
package org.rut.util.algorithm.support; _s#/f5<:B  
LKwUpu!  
import org.rut.util.algorithm.SortUtil; wr6xuoH  
-n$rKEC4  
/** ^?l-YnQqm?  
* @author treeroot 9jJ/ RXp  
* @since 2006-2-2 JCMEhI6d*  
* @version 1.0 Z~.]ZWj -  
*/ w1/T>o  
public class ImprovedQuickSort implements SortUtil.Sort { MsVI <+JZ  
?5+KHG*)  
private static int MAX_STACK_SIZE=4096; WSX@0A.&)  
private static int THRESHOLD=10;  z]R!l%`  
/* (non-Javadoc) J7aK3 he  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^_"q`71Dk  
*/ B7QtB3bn  
public void sort(int[] data) { lr= !:D=K  
int[] stack=new int[MAX_STACK_SIZE]; F7PZV+\  
X;[zfEB  
int top=-1; e"8m+]  
int pivot; =xQfgj  
int pivotIndex,l,r; .TrQ +k>  
"u> sS  
stack[++top]=0; ucm.~1G(  
stack[++top]=data.length-1; s%?p%2&RA  
jnLo[Cf,H8  
while(top>0){ 'V1 -iJj9  
int j=stack[top--]; lPSDY&`P  
int i=stack[top--]; i(qYyO'  
@nW(KF  
pivotIndex=(i+j)/2; i{x0#6_Y  
pivot=data[pivotIndex]; %}AY0fg?T  
WoT z'  
SortUtil.swap(data,pivotIndex,j); FT?1Q'  
_WkcJe`  
file://partition 7Mb t*[n  
l=i-1; # ;KG6IE  
r=j; Nb, H8;  
do{ \:)o'-   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >"My\o  
SortUtil.swap(data,l,r); !/lY q;$R  
} jm!C^5!  
while(l SortUtil.swap(data,l,r); af5`ktx  
SortUtil.swap(data,l,j); _=M'KCL*)  
;. [$  
if((l-i)>THRESHOLD){ *Zo o  
stack[++top]=i; |~vQ0D  
stack[++top]=l-1; GZ>% &^E  
} ~m=%a  
if((j-l)>THRESHOLD){ }u*@b10   
stack[++top]=l+1; YD>>YaH_3@  
stack[++top]=j; 0Y`tj  
} w*R-E4S?2  
Y8xnvK*  
} |ssIUJ  
file://new InsertSort().sort(data); 1&L){hg  
insertSort(data); (dprY1noC  
} ;77o%J'l  
/** Zkep7L   
* @param data :[rKSA]@  
*/ #$^i x  
private void insertSort(int[] data) { @ tp7tB ;  
int temp; 8`?j*FV7kq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u! FSXX<  
} )h!l%72  
} Yt<PKs#E  
} !rqR]nd  
l,2z5p  
} V.[#$ip6:  
~O7(0RsCN  
归并排序: ]6[d-$#^ko  
w+(wvNmNEK  
package org.rut.util.algorithm.support; NjyIwo0  
<;Z3 5 {  
import org.rut.util.algorithm.SortUtil; (#"s!!b  
m8A_P:MQq  
/** aw~EK0yU   
* @author treeroot ZvKMRW  
* @since 2006-2-2 /'_ RI  
* @version 1.0 /6*.%M>r  
*/ "4AQpD  
public class MergeSort implements SortUtil.Sort{ ^<Tp-,J$EN  
s;M*5|-  
/* (non-Javadoc) {mitF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BfLZ  
*/ qiryC7.E  
public void sort(int[] data) { 0-~x[\>>  
int[] temp=new int[data.length]; 1iW9?=a"  
mergeSort(data,temp,0,data.length-1); ?i=!UN  
} <vuX " 8  
25[/'7_"  
private void mergeSort(int[] data,int[] temp,int l,int r){ TRok4uc  
int mid=(l+r)/2; `5&V}"lB  
if(l==r) return ; W)~.o/;  
mergeSort(data,temp,l,mid); m =F@CA~C  
mergeSort(data,temp,mid+1,r); =eLb"7C#0  
for(int i=l;i<=r;i++){ *g6o ;c  
temp=data; c9@jyq_H?  
} ng*E9Puu[  
int i1=l; F}DD;K  
int i2=mid+1; 4N0nU  
for(int cur=l;cur<=r;cur++){  (t['  
if(i1==mid+1) e>Y2q|S85  
data[cur]=temp[i2++]; W+S; Do  
else if(i2>r) lM%fgyX  
data[cur]=temp[i1++]; xJGeIh5  
else if(temp[i1] data[cur]=temp[i1++]; E-iBA(H  
else x7@HPf  
data[cur]=temp[i2++]; ?zu{&aOX|  
} 28yxX431S  
} a$O]'}]`  
{\zr_v`g  
} 9iNns;^`q  
;O11)u?/s|  
改进后的归并排序: u.FDe2|[)  
3:#rFb  
package org.rut.util.algorithm.support; r2'rf pQ  
n"Vd"}sU.  
import org.rut.util.algorithm.SortUtil; T$;XJx  
p00AcUTq  
/** IW_D$pq  
* @author treeroot <~+  
* @since 2006-2-2 N+75wtLy&  
* @version 1.0 &/?jMyD@  
*/ h'KtG<+  
public class ImprovedMergeSort implements SortUtil.Sort { .U%"oD  
rv%[?Ml  
private static final int THRESHOLD = 10; }O  
l$9,  
/* 74(J7  
* (non-Javadoc) (*BW/.Fq  
* =7,U qMl_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "6QMa,)D  
*/ 1U7HS2  
public void sort(int[] data) { *)I1gR~  
int[] temp=new int[data.length]; @E;pT3; )  
mergeSort(data,temp,0,data.length-1); - S-1<xR  
} j #YFwX4.  
9#6/c  
private void mergeSort(int[] data, int[] temp, int l, int r) { #Q7$I.O]  
int i, j, k; N Z`hy>LF^  
int mid = (l + r) / 2; 6Qu*'  
if (l == r) FM[To  
return; RY< b]|  
if ((mid - l) >= THRESHOLD) vDvGT<d  
mergeSort(data, temp, l, mid); ^W'[l al.  
else o |iLBh$)  
insertSort(data, l, mid - l + 1); ulM&kw.4i  
if ((r - mid) > THRESHOLD) ;~1JbP  
mergeSort(data, temp, mid + 1, r); w'XgW0j{  
else CF_!{X_k}  
insertSort(data, mid + 1, r - mid); n#cN[C9  
qT @IY)e  
for (i = l; i <= mid; i++) { -~fI|A^  
temp = data; #+k[[; 0  
} yFsXI0I[p  
for (j = 1; j <= r - mid; j++) { pnJT]?},  
temp[r - j + 1] = data[j + mid]; tvRy8u;  
} UV.9 KcN.  
int a = temp[l]; (=rv `1  
int b = temp[r]; UUqj?'Nv  
for (i = l, j = r, k = l; k <= r; k++) { nDy=ZsK  
if (a < b) { YYW70k:  
data[k] = temp[i++]; aM!#  
a = temp; G - WJlu  
} else { I_7EfAqg(  
data[k] = temp[j--]; It-*CD9  
b = temp[j]; q2vz#\A?  
} He3zV\X[Z  
} KL]!E ~i  
} 'bPo 5V|  
RC%r7K f  
/** U$uO%:4%  
* @param data d?Cl04  
* @param l KW^aARJ)  
* @param i a0\UL"z#+  
*/ !yrHVc  
private void insertSort(int[] data, int start, int len) { 926oM77  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "@$STptkc  
} ?UDO%`X  
} )A=g# D#  
} _<Yo2,1^  
} %WR"85  
U{(07GNm#  
堆排序: aS G2K0  
ts>}>}@vc  
package org.rut.util.algorithm.support; ulJYJ+CC!  
e]h'  
import org.rut.util.algorithm.SortUtil; tb3fz")UC  
d.o FlT  
/** ^iS:mt  
* @author treeroot vW3ZuB  
* @since 2006-2-2 wkA!Jv%  
* @version 1.0 %QLYNuG  
*/ Dj(7'jT  
public class HeapSort implements SortUtil.Sort{ Pc== ]H(  
1s[-2^D+EM  
/* (non-Javadoc) 'U$VO q?!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W=]",<  
*/ z-gG(  
public void sort(int[] data) { ZNeqsN{  
MaxHeap h=new MaxHeap(); \;gt&*$-  
h.init(data); pUGfm  
for(int i=0;i h.remove(); P@`"MNS  
System.arraycopy(h.queue,1,data,0,data.length); mkzk$_  
} mXj Ljgc}  
% 6.jh#C  
private static class MaxHeap{ U-<"i6mg ?  
!5!$h` g  
void init(int[] data){ rxeXz<  
this.queue=new int[data.length+1]; { ][7Np!y  
for(int i=0;i queue[++size]=data; -$ z"74  
fixUp(size); 'PYqp&gJ  
} w8I&:"^7<  
} ^VPl>jTg  
)m;qv'=!  
private int size=0; ABmDSV5i  
Uy|=A7Ad c  
private int[] queue; 7#qL9+G  
6FMW g:{  
public int get() { F@roQQu  
return queue[1]; Nj&%xe>].  
} ^|(4j_.(e  
<W') ~o}  
public void remove() { % ul{nL:  
SortUtil.swap(queue,1,size--); %v:h]TA  
fixDown(1); K/ m)f#  
} u@u.N2H.%  
file://fixdown )uuEOF"w  
private void fixDown(int k) { chzR4"WZFt  
int j; D-:<]D:  
while ((j = k << 1) <= size) { 0.+eF }'H  
if (j < size %26amp;%26amp; queue[j] j++; 5THS5'  
if (queue[k]>queue[j]) file://不用交换 B/kn&^z$|~  
break; q*TKs#3  
SortUtil.swap(queue,j,k); Ab<Ok\e5  
k = j; [j U  
} lILtxVBO2o  
} F>(#Af9  
private void fixUp(int k) { BG0M j2  
while (k > 1) { v/.h%6n?  
int j = k >> 1; u;qMo`-  
if (queue[j]>queue[k]) ~(OIo7#;  
break; |hQ|'VCN  
SortUtil.swap(queue,j,k); Sb4PCt  
k = j; \OT)KVwO  
} ^6y4!='ci  
} B&k T#  
G2{M#H  
} RTBBb:eX  
;Jn0e:x`E  
} slvs oN@  
e - ]c  
SortUtil: &dDI*v+  
_Ge^ -7  
package org.rut.util.algorithm; 5=h'!|iY  
1$D`Z/N"A  
import org.rut.util.algorithm.support.BubbleSort; ;s. 5\YZ"k  
import org.rut.util.algorithm.support.HeapSort; q}v04Yy,o  
import org.rut.util.algorithm.support.ImprovedMergeSort; )-:eQ{st`  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]N <]  
import org.rut.util.algorithm.support.InsertSort; %g@3S!lK  
import org.rut.util.algorithm.support.MergeSort; b_gN?F7_  
import org.rut.util.algorithm.support.QuickSort; uPC qO+f  
import org.rut.util.algorithm.support.SelectionSort; R:BBNzY}f  
import org.rut.util.algorithm.support.ShellSort; PeUd  
j*~dFGl)  
/** OK?3,<x  
* @author treeroot J$9xC{L4  
* @since 2006-2-2 AKC foJ  
* @version 1.0 s?x>Yl %  
*/ 'BdmFKy1  
public class SortUtil { oT (:33$  
public final static int INSERT = 1; 0mD;.1:  
public final static int BUBBLE = 2; hi D7tb=g~  
public final static int SELECTION = 3; m|2]lb  
public final static int SHELL = 4; $< K)fbG  
public final static int QUICK = 5; hN:F8r+DG  
public final static int IMPROVED_QUICK = 6; 5ZyBP~  
public final static int MERGE = 7; ENx@Ex  
public final static int IMPROVED_MERGE = 8; f,HzrHax  
public final static int HEAP = 9; io r [v  
fqk Dk  
public static void sort(int[] data) { PUjoi@]  
sort(data, IMPROVED_QUICK); Ie&b <k  
} hp]ng!I{\u  
private static String[] name={ +fP/|A8P  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 'W?v.W &  
}; JQ/t, v$G  
[[0bhmG)  
private static Sort[] impl=new Sort[]{ Q^MXiE O+  
new InsertSort(), "^ 6lvZP(  
new BubbleSort(), &e]]F#  
new SelectionSort(), Ce5w0&VlS  
new ShellSort(), hi3sOK*r;<  
new QuickSort(), m,gy9$  
new ImprovedQuickSort(), H MjeGO.i  
new MergeSort(), &Ky u@Tt  
new ImprovedMergeSort(), k Kp6  
new HeapSort() bxhg*A  
}; 2^ ,H_PS  
<{NYD .  
public static String toString(int algorithm){ h-b5   
return name[algorithm-1]; &J^4Y!gt  
} ^/DII`A  
{NY~JFM  
public static void sort(int[] data, int algorithm) { yXTK(<'  
impl[algorithm-1].sort(data); -q&7J' N  
} "0H56#eW  
oWx_O-_._  
public static interface Sort { R7B,Q(q2-  
public void sort(int[] data); N$,/Q9h^  
} ;N$0)2w  
&8Jg9#  
public static void swap(int[] data, int i, int j) { 9o`7Kc/g  
int temp = data; Hw?2XDv j  
data = data[j]; };"+ O  
data[j] = temp; 'Uko^R)(  
} zD)IU_GWa  
} 2B9 i R  
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