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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。 a!.Y@o5Ku  
插入排序: q[x|tO  
1*:BOoYx  
package org.rut.util.algorithm.support; HcpAp]L)  
nLR   
import org.rut.util.algorithm.SortUtil; a..LbQQ  
/** dJ~Occ1~r  
* @author treeroot eWXR #g!%>  
* @since 2006-2-2 rr2^sQ;_  
* @version 1.0 ,M :j5  
*/ U"Y/PBs,  
public class InsertSort implements SortUtil.Sort{ Nj +^;Y  
f DPLB[  
/* (non-Javadoc) EmyE%$*T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #-l+c u{  
*/ `:d\L H  
public void sort(int[] data) { I0G[K~gb  
int temp; vnqLcNB H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $<L@B|}F)  
} !E^\)=E)P  
} c=re(  
} #<es>~0!  
P.djR)YI  
} `2y?(BJp  
w`atk=K  
冒泡排序: }/jWa |)f  
Q1(4l?X@  
package org.rut.util.algorithm.support; 34L1Gxf  
Su<>UsdUC  
import org.rut.util.algorithm.SortUtil; :W$- b  
hb1eEn  
/** xdMY2u  
* @author treeroot l!:L<B  
* @since 2006-2-2 O"wo&5b_  
* @version 1.0 <Vh }d/  
*/ <VhD>4f{]  
public class BubbleSort implements SortUtil.Sort{ XJ1Bl  
8_M"lU0[  
/* (non-Javadoc) sYB2{w   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FJFO0Hb6  
*/ [J55%N;#1  
public void sort(int[] data) { f[?JLp   
int temp; NMzq10M=6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ k&npC8oA  
if(data[j] SortUtil.swap(data,j,j-1); F:AVik  
} DH)E9HL  
} DeI3(o7  
} B/Ltb^a  
} BW ux!  
HrUE?Sq  
}  vSo1WS  
I/u>Gt  
选择排序: FJB B@<>:  
Kd*=-  
package org.rut.util.algorithm.support; JD9=gBN\?  
BE!l{  
import org.rut.util.algorithm.SortUtil; J|([(  
AB<%GzW0(  
/** szD9z{9"y  
* @author treeroot -op)X>  
* @since 2006-2-2 0 qW"b`9R  
* @version 1.0 q9c-UQB(!  
*/ R: [#OH.c  
public class SelectionSort implements SortUtil.Sort { nd w&F'.r  
gL`aLg_  
/* z`,dEGfh^  
* (non-Javadoc) MjK<n[.  
* @?gRWH;Pq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w%(D4ldp   
*/ P1 |3%#c  
public void sort(int[] data) { E`]un.  
int temp; -?-yeJP2  
for (int i = 0; i < data.length; i++) { cH707?p/I  
int lowIndex = i; Z:diM$Z?7  
for (int j = data.length - 1; j > i; j--) { kV4L4yE  
if (data[j] < data[lowIndex]) { _>3#dk  
lowIndex = j; ,[3}t%Da  
} <YrsS-9  
} (px3o'lsh  
SortUtil.swap(data,i,lowIndex); y2R\SL,  
} m= %KaRI  
} 3,J{!  
-fN5-AC  
} }0]iS8*tL  
@9l$j Z~x  
Shell排序: @~FJlG(n  
o\fPZ`p-m~  
package org.rut.util.algorithm.support; g"`jWSt7Q  
qHPinxewx  
import org.rut.util.algorithm.SortUtil; L]l?_#*x  
! 6R|  
/** =F_j})O5  
* @author treeroot l~[ K.p&  
* @since 2006-2-2 %v UUx+  
* @version 1.0 7| `_5e  
*/ \\C!{}+  
public class ShellSort implements SortUtil.Sort{ 09i7 7  
VBW][f  
/* (non-Javadoc) 3ouo4tf$H.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {MUO25s02  
*/ m8INgzVTC  
public void sort(int[] data) { }N:QB}7'_  
for(int i=data.length/2;i>2;i/=2){ 99n;%W>  
for(int j=0;j insertSort(data,j,i); XW+-E^d  
} -s ^cy+jd  
} u++a0>N  
insertSort(data,0,1); Ex6Kxd}8  
} \w-3Spk*  
QBA{*@ A-  
/** 3@* ~>H  
* @param data mq4VwT  
* @param j 3TN'1D ei  
* @param i M7#CMLy  
*/ &SPIu,  
private void insertSort(int[] data, int start, int inc) { [ C!m,4  
int temp; ^;$9>yi1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z=l2Po n  
} DmZ_tuVI  
} 2o 7o~r  
} %D7'7E8.  
2#8PM-3"  
} $4kbOqn4  
"9Br )3  
快速排序: .!'rI7Kz'i  
B)dd6R>8  
package org.rut.util.algorithm.support; Psm9hP :m  
COd~H  
import org.rut.util.algorithm.SortUtil; )ri'W <l  
P<9T.l  
/** MfA%Xep  
* @author treeroot ;a[3RqmKW  
* @since 2006-2-2 Z*(OcQ-  
* @version 1.0 ^}kYJvqA  
*/ |=W>4>  
public class QuickSort implements SortUtil.Sort{ %v^qQWy=*  
5U*${  
/* (non-Javadoc) TLg 9`UA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TC ;Aj|)N  
*/ [3qJUJM  
public void sort(int[] data) { i6i;{\tc  
quickSort(data,0,data.length-1); R^.c  
} @;[.#hK  
private void quickSort(int[] data,int i,int j){ MW0CqMi]T  
int pivotIndex=(i+j)/2; :4pO/I ~  
file://swap (D+%*ax  
SortUtil.swap(data,pivotIndex,j); fL gHQ  
fUJe{C<H  
int k=partition(data,i-1,j,data[j]); u@zT~\ h*  
SortUtil.swap(data,k,j); }@53*h i(  
if((k-i)>1) quickSort(data,i,k-1); VD{_6  
if((j-k)>1) quickSort(data,k+1,j); wHQYBYKcd  
wD@ wOC  
} vmW`}FKW  
/** ON"V`_dq+M  
* @param data C%P.`NxA  
* @param i PG'I7)Bv  
* @param j fi6_yFl  
* @return eqpnh^0}d  
*/ v^ 1x}  
private int partition(int[] data, int l, int r,int pivot) { jQ(%LYX$  
do{ 3>z+3!I z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); DyQvk  
SortUtil.swap(data,l,r); WhV>]B2+"  
} prxmDI   
while(l SortUtil.swap(data,l,r); ]O~/k~f  
return l; ;bq EfV0`2  
} XsMETl"Av4  
i^/ H>E%u  
} *yW9-(  
/ZSdY_%s  
改进后的快速排序: <"S/M]9  
B_%O6  
package org.rut.util.algorithm.support;  ur k@v  
?\a';@h  
import org.rut.util.algorithm.SortUtil; <Q.-WV]Z  
oXqx]@7  
/** ?=?9a  
* @author treeroot %'dsb7n  
* @since 2006-2-2 G""=`@  
* @version 1.0 VF9-&HuC  
*/ '9 <APUyu  
public class ImprovedQuickSort implements SortUtil.Sort { 2V*<J:;wb  
cp+eh  
private static int MAX_STACK_SIZE=4096; P"c7h7  
private static int THRESHOLD=10; ;] #Q!  
/* (non-Javadoc) iHyA;'!Os  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oc&yz>%q  
*/ w"j[c#vM  
public void sort(int[] data) { ;'|t>'0_  
int[] stack=new int[MAX_STACK_SIZE]; f&Meiu+  
.eDI ZX  
int top=-1; DFqVZ   
int pivot; 3a,7lTUuB  
int pivotIndex,l,r; {7FD-Q[tS  
PPNZ(j   
stack[++top]=0; [0n&?<<  
stack[++top]=data.length-1; _NM=9cWd  
;#?+i`9'q  
while(top>0){ 79MB_Is]s  
int j=stack[top--]; v>mr  
int i=stack[top--]; I4 4bm?[S  
<1E* wPm8  
pivotIndex=(i+j)/2; vlZ?qIDe  
pivot=data[pivotIndex]; YCB=RT]&`  
c::Vh  
SortUtil.swap(data,pivotIndex,j); _l.kbfp@  
oJEjg>%n  
file://partition iI%"]- 0@1  
l=i-1; {\-IAuM  
r=j; 1He'\/#  
do{ ZD]5"oHY  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |Ok1E  
SortUtil.swap(data,l,r); T WgI-xB  
} \o,`@2H+'  
while(l SortUtil.swap(data,l,r); YPsuG -is  
SortUtil.swap(data,l,j); dD"o~iEC  
dg42K`E  
if((l-i)>THRESHOLD){ 0@8EIQxK"  
stack[++top]=i; E@\bFy_!>b  
stack[++top]=l-1; s&zg!~@5b  
} eVbaxL!Q^  
if((j-l)>THRESHOLD){ [z`m`9Aq  
stack[++top]=l+1; FA;uu\  
stack[++top]=j; 0sKY;(  
} c1p*}T  
@~<M_63  
} B^uQv|m  
file://new InsertSort().sort(data); #N"K4@]{  
insertSort(data); }x1p~N+;  
} S[cVoV  
/** `ynD-_fTN  
* @param data w0^T-O`<  
*/ $ OMGo`z  
private void insertSort(int[] data) { u!&Vbo? .B  
int temp; ro4 XA1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t^qPQ;"=,  
} h $}&N  
} ~;0J 4hR  
} c B9`U4<  
S_B;m1  
} v-@xO&<  
&Q"Ox{~W  
归并排序: ^g2p!7  
D0=H&Z[  
package org.rut.util.algorithm.support; nAJ<@a  
3M{/9rR[  
import org.rut.util.algorithm.SortUtil; k;pTOj  
YQ}bG{V  
/** 64OgE!  
* @author treeroot )0JXUC e  
* @since 2006-2-2 'WG%O7s.  
* @version 1.0 \^+=vO;A  
*/ 3yu{Q z5y,  
public class MergeSort implements SortUtil.Sort{ uiIY,FL$  
PuhFbgxy  
/* (non-Javadoc) I)Dd"I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yA+:\%y$  
*/ L{\au5-4  
public void sort(int[] data) { rSVU|O3m;  
int[] temp=new int[data.length]; 6 2r%q^r`i  
mergeSort(data,temp,0,data.length-1); Svo gvn  
} Q1Sf7)  
YRYAQj/7  
private void mergeSort(int[] data,int[] temp,int l,int r){  CKv [E  
int mid=(l+r)/2; }pa@qZXh  
if(l==r) return ; 5/v@VUzH  
mergeSort(data,temp,l,mid); L;0ZB=3n  
mergeSort(data,temp,mid+1,r); l1\/ `  
for(int i=l;i<=r;i++){ MhZT<6  
temp=data; H`$s63  
} ~E=.*: 5(  
int i1=l; %<q l  
int i2=mid+1; ?2;r#)  
for(int cur=l;cur<=r;cur++){ X#mppMU  
if(i1==mid+1) ]kuMzTH  
data[cur]=temp[i2++]; joh=0nk;D  
else if(i2>r) ~'e/lX9g-  
data[cur]=temp[i1++]; &z r..i4O  
else if(temp[i1] data[cur]=temp[i1++]; ]3C&l+m$ot  
else fRe$}KX  
data[cur]=temp[i2++]; Z4/rqU  
} >*v^E9Y  
} zR_#c3o  
HKk;oG  
} (ROurq"  
XTD _q  
改进后的归并排序: a(Bo.T<2@  
;9pOtr  
package org.rut.util.algorithm.support; ?3"bu$@8  
wY2#xD  
import org.rut.util.algorithm.SortUtil; )A a98Eu?2  
`}KK@(Y  
/** `7P4O   
* @author treeroot m Kwhd} V  
* @since 2006-2-2 h:3`e`J<h  
* @version 1.0 ;K[`o/#4"  
*/ k, )7v  
public class ImprovedMergeSort implements SortUtil.Sort { ;6I{7[  
kEtYuf^  
private static final int THRESHOLD = 10; ;SF0}51  
'!64_OMj'  
/* 1o7 pMp=  
* (non-Javadoc) sAIL+O  
* #~54t0|Cd>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i8w(G<Y=  
*/ hSc$Sa8  
public void sort(int[] data) { 9~DoF]TM  
int[] temp=new int[data.length]; g83!il\  
mergeSort(data,temp,0,data.length-1); M=$y_9#  
} nn"!x|c  
&%`IPhbT  
private void mergeSort(int[] data, int[] temp, int l, int r) { v6 DN:!&  
int i, j, k; wh:O"&qk  
int mid = (l + r) / 2; |lIkmW{  
if (l == r) >De\2gbJ  
return; c?Bi  
if ((mid - l) >= THRESHOLD) _cx}e!BK#  
mergeSort(data, temp, l, mid); P@:#NU[  
else W{l+_a{/9  
insertSort(data, l, mid - l + 1); ;8;nY6Ie  
if ((r - mid) > THRESHOLD) dWE[*a\g  
mergeSort(data, temp, mid + 1, r); Xd>4n7nb$`  
else !m rB+<:  
insertSort(data, mid + 1, r - mid); 34 W#  
iLn)Z0<\o  
for (i = l; i <= mid; i++) { zr?%k]A%UO  
temp = data; t<9oEjk["  
} B3u5EgZr  
for (j = 1; j <= r - mid; j++) { _d&zHlc_  
temp[r - j + 1] = data[j + mid]; Gd`qZqx#  
} b5 YE4h8%  
int a = temp[l]; n 8Jx;j  
int b = temp[r]; '5KgRK"  
for (i = l, j = r, k = l; k <= r; k++) {  "/6(  
if (a < b) { $BG4M?Y  
data[k] = temp[i++]; "-kb=fY  
a = temp; 5UR$Pn2a2  
} else { "[(_C&Ot4  
data[k] = temp[j--]; QfB \h[A  
b = temp[j]; Lw?4xerLsb  
} Rk56H  
} C<2vuZD  
} &h-d\gMJ  
eb2~$ ,$  
/** ;14[)t$  
* @param data /s(/6~D|  
* @param l }8p;w T!  
* @param i ~;,]/'O  
*/ iCao;Zb  
private void insertSort(int[] data, int start, int len) { #O z<<G<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5[esW  
} n[CESo%[  
} e//28=OH  
} ?UoA'~=  
} {QTfD~z^K  
V{@<Z8sW#  
堆排序: -]R7[5C:  
V#^~JJW^  
package org.rut.util.algorithm.support; gAC}  
ouK&H|'  
import org.rut.util.algorithm.SortUtil; .GM&]Hb  
{bl&r?[y  
/** 97e fWYj  
* @author treeroot \f1r/e(G|  
* @since 2006-2-2 @$gvV]dA  
* @version 1.0 (ta!4h,  
*/ K7Kd{9-2  
public class HeapSort implements SortUtil.Sort{ ?3kfh R  
FJKt5}`8  
/* (non-Javadoc) 3_B .W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~ d^+yR-  
*/ F*o{dLJ)  
public void sort(int[] data) { p@/!+$^{  
MaxHeap h=new MaxHeap(); a Umcs!@  
h.init(data); uO>$,s  
for(int i=0;i h.remove(); ,Ww)>O+  
System.arraycopy(h.queue,1,data,0,data.length); /_l%Dm?  
} !`hjvJryw  
bdk"7N  
private static class MaxHeap{ 9kuL1tcY  
IrjKI.PR  
void init(int[] data){ ?ah-x""Y  
this.queue=new int[data.length+1]; q-eC=!#}  
for(int i=0;i queue[++size]=data; kB_GL>fc  
fixUp(size); ^IOf%  
} v$s3f|Y  
} YTpSR~!Rj  
\$T  
private int size=0; }H!c9Y  
gpVZZ:~  
private int[] queue; mS6 #\'Qa  
Y[i>  
public int get() { {3lsDU4  
return queue[1]; t@QaxZIlt;  
} R lyF#X#7{  
c<wsWs 4V  
public void remove() { }|%dN*',  
SortUtil.swap(queue,1,size--); Yw"o_  
fixDown(1); "n," >  
} D'ZR>@w@  
file://fixdown S=~[6;G  
private void fixDown(int k) { fQ=Yf?b  
int j; W~aVwO'(  
while ((j = k << 1) <= size) { SGre[+m~m  
if (j < size %26amp;%26amp; queue[j] j++; [U]U *x  
if (queue[k]>queue[j]) file://不用交换 Dz:A.x@$*  
break; fchsn*R%-  
SortUtil.swap(queue,j,k);  U2  
k = j; F?\XhoJ3G  
} R22YKXU  
} @AaM]?=P{  
private void fixUp(int k) { tq H7M0Ry  
while (k > 1) { F$ShhZgi  
int j = k >> 1; %/"I.\%d  
if (queue[j]>queue[k]) M' e<\wqm  
break; >N62t9Ll[  
SortUtil.swap(queue,j,k); K PSFy<  
k = j; ('xIFi  
} Z,)4(#b =  
} {mrTpw  
G|Rsj{2'  
} u)Y~+ [Q  
x2=Bu#Y  
} Q [kbEhv;  
ExeD3Zj  
SortUtil: F&%@p&  
t'|A0r$  
package org.rut.util.algorithm; Bha#=>4FU  
d00#;R  
import org.rut.util.algorithm.support.BubbleSort; rn $a)^!  
import org.rut.util.algorithm.support.HeapSort; ;{EIx*<d  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3_|<CE6  
import org.rut.util.algorithm.support.ImprovedQuickSort; 6=U81  
import org.rut.util.algorithm.support.InsertSort; "3.v(GVr  
import org.rut.util.algorithm.support.MergeSort; Atc9[<~WG  
import org.rut.util.algorithm.support.QuickSort; 1)pwR3(^Fz  
import org.rut.util.algorithm.support.SelectionSort; g>-pC a  
import org.rut.util.algorithm.support.ShellSort; [Gop-Vi/~  
c.dk4v%Y5  
/** L[lX?g?Ob  
* @author treeroot !iA 3\Ai"  
* @since 2006-2-2 AD K)p?  
* @version 1.0 `-fWNHs  
*/ {L~j;p_G&  
public class SortUtil { fqrQ1{%UH  
public final static int INSERT = 1; O2;FaASF  
public final static int BUBBLE = 2; fb-Lp#!T39  
public final static int SELECTION = 3; 3 9to5 s,  
public final static int SHELL = 4; H xs'VK*  
public final static int QUICK = 5; ]xC#XYE:dy  
public final static int IMPROVED_QUICK = 6; J{;XNf =  
public final static int MERGE = 7; vz5x{W  
public final static int IMPROVED_MERGE = 8; 5{Q5?M]  
public final static int HEAP = 9; ( m/uj z  
mSLA4[4{  
public static void sort(int[] data) { uonCD8  
sort(data, IMPROVED_QUICK); :No`+X[Kq  
} ze2%#<  
private static String[] name={ x1H1[0w,i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 'yxN1JF  
}; WoM;)Q  
0DtewN{Z  
private static Sort[] impl=new Sort[]{ kvcDa+#  
new InsertSort(), ~MWI-oK  
new BubbleSort(), \4Uhc3  
new SelectionSort(), $inlI_  
new ShellSort(), "Vh3hnS~  
new QuickSort(), JguPXHa0  
new ImprovedQuickSort(), Y`F)UwKK  
new MergeSort(), 2[|52+zhc  
new ImprovedMergeSort(), }`KK  
new HeapSort() j9gn7LS  
}; `eZzYe(N  
]%M&pc3U  
public static String toString(int algorithm){ )5T82=[h<  
return name[algorithm-1]; Gyx4}pV  
} .3 >"qv  
')N[)&&Q{  
public static void sort(int[] data, int algorithm) { `%QXaKO-  
impl[algorithm-1].sort(data); OfG/7pw5%B  
} "I)/|x\G*  
r{ >Q{$Q  
public static interface Sort { 6/Iq@BZ&  
public void sort(int[] data); <O Y (y#x  
} Q g~cYwX  
mR["xDHD  
public static void swap(int[] data, int i, int j) { /H4Z.|@  
int temp = data; nTsKJX%\  
data = data[j]; U#V&=~-  
data[j] = temp; ~c,CngeL0  
} T@wgWE<0y_  
} mR|L'[l  
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