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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。 YM5fyv?  
插入排序: .*elggM  
2h?uNW(0Q  
package org.rut.util.algorithm.support; eb*#'\~'  
EbqcV\Kb  
import org.rut.util.algorithm.SortUtil; ayAo^q  
/** >}(CEzc8  
* @author treeroot J,b&XD@m  
* @since 2006-2-2 x W92ch+t  
* @version 1.0 znJ'iV f  
*/ {d?$m*YR3`  
public class InsertSort implements SortUtil.Sort{ 6oui]$pH  
u,3#M ~  
/* (non-Javadoc) 52o x`t|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "s\L~R.&  
*/ 3"F`ZJ]=  
public void sort(int[] data) { $+7`Dy!  
int temp; *5xJv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6Zn @2PGEl  
} 4b:s<$TZ  
} 2B,] -Mu)  
} F{ELSKcp.  
;'-olW~  
} Y@ZaJ@%9@  
xU%w=0z <  
冒泡排序: E= `6-H{  
dg^L=  
package org.rut.util.algorithm.support; je]}R>[r5  
iDf,e Kk$'  
import org.rut.util.algorithm.SortUtil; )#LpCM,a  
5Ba[k[b^  
/** H{t_xL)k.  
* @author treeroot 7#wn<HDY%  
* @since 2006-2-2  f3UXCp  
* @version 1.0 *3D%<kVl  
*/ 0q&'(-{s1  
public class BubbleSort implements SortUtil.Sort{ $y b4xU  
q{ O% |  
/* (non-Javadoc) 8Dvazg}4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @u1zB:  
*/ /<rt1&0  
public void sort(int[] data) { h&kZjQ&  
int temp; o-o'z'9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Wq^qpN)5Y  
if(data[j] SortUtil.swap(data,j,j-1); E#s)52z=B  
} d:F @a  
} hUm'8)OJ  
} ?-Vjha@BO  
} w4fW<ISg  
8iekEG$H  
} VM0j`bs'K*  
gkHNRAL  
选择排序: cCR+D.F  
pFJB'=c  
package org.rut.util.algorithm.support; k#5}\w!  
c5mZG7-  
import org.rut.util.algorithm.SortUtil; U"50_O  
#Z5}2soA  
/** Iuh/I +[7  
* @author treeroot c*R/]Dn   
* @since 2006-2-2 u!:z.RH8n  
* @version 1.0 Reu*Pe  
*/ owPm/F  
public class SelectionSort implements SortUtil.Sort { :\=CRaA  
+b3^.wkq  
/* ~.!c~fke  
* (non-Javadoc) )$,"u4  
* xai4pF-?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2W$cFC  
*/ TXZv2P9  
public void sort(int[] data) { K5"#~\D  
int temp; )*:`':_a  
for (int i = 0; i < data.length; i++) { Dwl3 Cj  
int lowIndex = i; pBw0"ff  
for (int j = data.length - 1; j > i; j--) { S~Id5T:,  
if (data[j] < data[lowIndex]) { ~ Uo)0  
lowIndex = j; ]Ta N{"  
} K!KMQr`  
} EKp@9\XBC  
SortUtil.swap(data,i,lowIndex); \.g\Zib )  
} @UdfAyL  
} lqb/eN9(t  
IVW1]y  
} ,<2DL p%%D  
w/L `  
Shell排序: TFcT3]R[rL  
_$>pw<  
package org.rut.util.algorithm.support; \8uIER5)  
)+Oujt  
import org.rut.util.algorithm.SortUtil; U#1bp}y  
0T>H)c6:\  
/** 3su78et}  
* @author treeroot x1ztfJd  
* @since 2006-2-2 F!.E5<&7=  
* @version 1.0 |$7vI&m  
*/ CX m+)a-L  
public class ShellSort implements SortUtil.Sort{ m5Tr-w$QY  
=v*.p=r  
/* (non-Javadoc) @ps1Dr4s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t5lO'Ll*Q]  
*/ b9XW9O `B  
public void sort(int[] data) { !|<=ZF2  
for(int i=data.length/2;i>2;i/=2){ O3CFme  
for(int j=0;j insertSort(data,j,i); =!Q7}z1QI  
} AO UL^$&  
} f}D1|\7  
insertSort(data,0,1); F"N60>>  
} N&[D>G]>v  
|_ G )qp;  
/** RV&^g*;E  
* @param data cr;g5C V  
* @param j )3(;tT,$}^  
* @param i #M!!CX*k  
*/ Iz[@^IUx=  
private void insertSort(int[] data, int start, int inc) { jM:Y' l]  
int temp; mYU9 trHV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |] Qg7m,O  
} _uJ"m8Tl  
} a[2vjFf#C  
} +S))3 5N[  
jVH|uX"M5Y  
} 0KD]j8^  
yObuWDA9  
快速排序: Wpc|`e<  
_{|D  
package org.rut.util.algorithm.support; xW[ -n  
fQP{|+4  
import org.rut.util.algorithm.SortUtil; q{ /3V  
Pm$q]A~  
/** I7&_Xr  
* @author treeroot e${>#>  
* @since 2006-2-2 [{r}u  
* @version 1.0 &gI~LP  
*/ Ssk}e=]  
public class QuickSort implements SortUtil.Sort{ V i&*&"q  
Qeu\&%C!<  
/* (non-Javadoc) ?h!i0Rsm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }za[E>z  
*/ '<0J@^vZ  
public void sort(int[] data) { I=;+n-  
quickSort(data,0,data.length-1); a {ab*tM  
} }^(}HBT  
private void quickSort(int[] data,int i,int j){ ,j5&6X=1M  
int pivotIndex=(i+j)/2; l$hJE;n  
file://swap ^'jEnN(  
SortUtil.swap(data,pivotIndex,j); eh[_~>w  
S\CRG>  
int k=partition(data,i-1,j,data[j]); a" H WGY  
SortUtil.swap(data,k,j); Skz|*n|eY  
if((k-i)>1) quickSort(data,i,k-1); ~8m=1)A{(  
if((j-k)>1) quickSort(data,k+1,j); jLJ1u/l>;  
Jxqh )l  
} IG3,XW  
/** $x6$*K(F  
* @param data Iyo@r%I  
* @param i &P,^.'  
* @param j r_YIpnJ  
* @return 7#<c>~   
*/ w{dIFvQ"$  
private int partition(int[] data, int l, int r,int pivot) { |7KeR-  
do{ x3rlJs`$;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8t=(,^c  
SortUtil.swap(data,l,r); _ %%Z6x(  
} *6 U&Qy-M  
while(l SortUtil.swap(data,l,r); IHp_A  
return l; I!wX[4p eg  
} <58l;<0  
{NJfNu  
} Ix|~f1*%  
'$ef+@y  
改进后的快速排序: qOaQxRYm%Y  
kcDyuM`  
package org.rut.util.algorithm.support; FWC5&tM  
P_u|-~|\  
import org.rut.util.algorithm.SortUtil; f+.T^es  
7E!7"2e a  
/** O@iu aeEW  
* @author treeroot M.td^l0  
* @since 2006-2-2 S^Au#1e   
* @version 1.0 H[b}kZW:a  
*/ c)&>$S8*  
public class ImprovedQuickSort implements SortUtil.Sort { `Bn=?9  
,^8MB.  
private static int MAX_STACK_SIZE=4096; :SV>+EDY   
private static int THRESHOLD=10; RmI1`  
/* (non-Javadoc) {7Mj P+\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !,Zp? g)  
*/ V3mAvmx  
public void sort(int[] data) { C>Is1i^9  
int[] stack=new int[MAX_STACK_SIZE]; %c)[ kAU!  
B cj/y4"  
int top=-1; pb0E@C/R  
int pivot; 1|8<H~&  
int pivotIndex,l,r; vKoP|z=m  
-A-tuyIsh"  
stack[++top]=0; 79=45'8  
stack[++top]=data.length-1; /# <pVgN  
hO[3Z ^X  
while(top>0){ US{3pkr;I]  
int j=stack[top--]; a,7 &"  
int i=stack[top--]; @/UfD ye  
[\R>Xcu>  
pivotIndex=(i+j)/2; x7T +>  
pivot=data[pivotIndex]; 6Fy@s  
Y\v-,xPm  
SortUtil.swap(data,pivotIndex,j); [Vdz^_@Y  
wve=.n  
file://partition m+ itno  
l=i-1; #0;HOeIiH  
r=j; j8 C8X$  
do{ eo^/c +FG  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3 ?&h^UX  
SortUtil.swap(data,l,r); ^/Sh=4=G  
} CVXytS?@x  
while(l SortUtil.swap(data,l,r); `Pc3?~>0HH  
SortUtil.swap(data,l,j); 2i|B=D(  
%]p6Kn/>  
if((l-i)>THRESHOLD){ c<+;4z  
stack[++top]=i; %f8Qa"j  
stack[++top]=l-1; @U -$dw'4  
} +rWZ|&r%  
if((j-l)>THRESHOLD){ G%# 05jH  
stack[++top]=l+1; TOLl@p]lU  
stack[++top]=j; }jSj+*  
} x?D/.vrOY  
bl/,*Wx:4.  
} T@^]i&  
file://new InsertSort().sort(data); N]5m(@h  
insertSort(data); mCKk*5ws5"  
} H;WY!X$x  
/** ezTZnutZ  
* @param data G[idN3+#  
*/ .]Mn^2#j  
private void insertSort(int[] data) { 7.bN99{xPM  
int temp; p2x [p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VF0dE  
} 6gOe!m m  
} NBl __q  
} wHsB,2H  
u~Tg&0V30  
} V:bV ?lt  
|Y_ -  
归并排序: `0#H]=$2h  
U/qE4u1J6M  
package org.rut.util.algorithm.support; ]B9 ^3x[:  
?TEK=mD#u  
import org.rut.util.algorithm.SortUtil; -T/W:-M(  
[6(Iwz?  
/** G%TL/Z40  
* @author treeroot Ua*&_~7kJ  
* @since 2006-2-2 h[XGC =%  
* @version 1.0 6xgv:,  
*/ BQ05`nkF  
public class MergeSort implements SortUtil.Sort{ rVA L|0;3  
nv5u%B^  
/* (non-Javadoc) -+U/Lrt>8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )WR_ ug  
*/ 8 |h9sn;P  
public void sort(int[] data) { oUW<4l  
int[] temp=new int[data.length]; =?0QqCjK)  
mergeSort(data,temp,0,data.length-1); e9u@`ZC07  
} dYOF2si~%  
3/M.0}e  
private void mergeSort(int[] data,int[] temp,int l,int r){ #-u [$TA  
int mid=(l+r)/2; %6 =\5>  
if(l==r) return ; f1+qXMs  
mergeSort(data,temp,l,mid); @Z\2*1y6  
mergeSort(data,temp,mid+1,r); Qs+k)e,  
for(int i=l;i<=r;i++){ h5@j`{  
temp=data; Ri?\m!o  
} e-D4'lu  
int i1=l; 6*1$8G`$8,  
int i2=mid+1; _py2kjA6  
for(int cur=l;cur<=r;cur++){ &A50'8B2A  
if(i1==mid+1) #GqTqHNE<  
data[cur]=temp[i2++]; XKLF8~y8A  
else if(i2>r) 4?]oV%aP)  
data[cur]=temp[i1++]; T<jfAE  
else if(temp[i1] data[cur]=temp[i1++]; wFlV=!>,  
else iH)Nk^   
data[cur]=temp[i2++]; P6?0r_Y  
} !eD+GDgE]  
} xNdIDj@  
$T dC/#7  
} -a) T6:e  
O25m k X  
改进后的归并排序: %]Cjhs"v  
V; 9 }7mw  
package org.rut.util.algorithm.support; <lFY7' aY  
m7 XjP2   
import org.rut.util.algorithm.SortUtil; CD?&<NV  
(M% ;~y\  
/** RLKj u;u  
* @author treeroot ~oi_r8 K  
* @since 2006-2-2 C*wdtEGq  
* @version 1.0 rpU/s@%L  
*/ v}il(w;O  
public class ImprovedMergeSort implements SortUtil.Sort { Da,&+fZI!  
B/YcSEY;  
private static final int THRESHOLD = 10; VbxAd 2')  
jL4>A$  
/* By)3*<5a_  
* (non-Javadoc) ]O@"\_}  
* Xm[Czd]%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hql5oA  
*/ `facFt[\  
public void sort(int[] data) { {fG|_+tl3o  
int[] temp=new int[data.length]; aV|k}H{wt  
mergeSort(data,temp,0,data.length-1); Ku%6$C!,  
} |>s v8/!  
R# 6H'TVE  
private void mergeSort(int[] data, int[] temp, int l, int r) { Y-&|VE2  
int i, j, k; 2lz {_9  
int mid = (l + r) / 2; NV!4(_~  
if (l == r) Hhf72IX  
return; ^HFo3V }h  
if ((mid - l) >= THRESHOLD) iK x+6v  
mergeSort(data, temp, l, mid); DPPS?~Pq  
else dM|g`rr E  
insertSort(data, l, mid - l + 1); B8 2,.?  
if ((r - mid) > THRESHOLD) uZ[/%GTX{)  
mergeSort(data, temp, mid + 1, r); Oc-u=K,B  
else  <qn,  
insertSort(data, mid + 1, r - mid); H'Iq~Ft1  
HU[oR4E  
for (i = l; i <= mid; i++) { i=da,W=0  
temp = data; 5^|"_Q#:  
} LkaG[^tfN  
for (j = 1; j <= r - mid; j++) { rUFFF'm\*a  
temp[r - j + 1] = data[j + mid]; "#XtDpGk  
} y"R("j $  
int a = temp[l]; ?cBO6^  
int b = temp[r]; QeK{MF  
for (i = l, j = r, k = l; k <= r; k++) { T 'i~_R6  
if (a < b) { o4'v> b  
data[k] = temp[i++]; $n*%v85  
a = temp; &l!$Sw-u;  
} else { "z/V%ZK~f  
data[k] = temp[j--]; ;vUxO<cKFq  
b = temp[j]; {h^c  
} <[8@5?&&  
} " ~n3iNkP  
} :C}Hy  
yam}x*O\xn  
/** BA`:miH<  
* @param data UG=I~{L  
* @param l <rMv0y+r  
* @param i FAd``9kRT  
*/ x)\V lR  
private void insertSort(int[] data, int start, int len) { '8Qw:fh  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5\?3$<1 I  
} g$gS7!u,  
} ^teaJy%  
} gD5P!}s[u0  
} 9i[4"&K  
fn?VNZ`J  
堆排序: Okoo(dfM  
n>T:2PQ3  
package org.rut.util.algorithm.support; ioWJj.%  
NE[y|/  
import org.rut.util.algorithm.SortUtil; 0&B:\  
YME[%c2x  
/** y*(_\\  
* @author treeroot Q(blW  
* @since 2006-2-2 -=>U =|  
* @version 1.0 () <`t}FQ  
*/ @4@PuWI0-  
public class HeapSort implements SortUtil.Sort{ <hMtE/05B  
Z{#"-UG  
/* (non-Javadoc) NJ>,'s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Za9$Hh/X  
*/ :r^klJ(m  
public void sort(int[] data) {  9^p32G  
MaxHeap h=new MaxHeap(); @jKDj]\  
h.init(data); ,N0uR@GN  
for(int i=0;i h.remove(); )8bFGX7|  
System.arraycopy(h.queue,1,data,0,data.length); !3QRzkJX~  
} 'FqEB]gu  
km}MqBQl  
private static class MaxHeap{ fK);!Hh  
w=5   
void init(int[] data){ 4y1>  
this.queue=new int[data.length+1]; e|~C?Ow'J  
for(int i=0;i queue[++size]=data; QK'`=MU  
fixUp(size); "]w!`^'_  
} +>u>`|  
} h$|3dz N  
ki`8(u6l  
private int size=0; >6k}HrS1V  
/'mrDb_ip  
private int[] queue; n{L:MT9TD  
SF"#\{cjj  
public int get() { k=ts&9\  
return queue[1]; ;Na^]32  
} PaxK^*  
AzxL%,_  
public void remove() { UDVf@[[hN  
SortUtil.swap(queue,1,size--); )7k&`?Mh  
fixDown(1); 76$*1jB  
} u7n[f@Eg,%  
file://fixdown q;ZLaX\bFl  
private void fixDown(int k) { d&5c_6oW  
int j; >6IXuq  
while ((j = k << 1) <= size) { /MhS=gVxM  
if (j < size %26amp;%26amp; queue[j] j++; HLM;EZ  
if (queue[k]>queue[j]) file://不用交换 _/ct=  
break; 5cgo)/3M@}  
SortUtil.swap(queue,j,k); )tScc*=8  
k = j; ' *}^@[&  
} M5F(<,n;  
} gA{'Q\  
private void fixUp(int k) { ka!Bmv)  
while (k > 1) { -}E)M}W  
int j = k >> 1; Ri; =aZ5m  
if (queue[j]>queue[k]) l 4!kxXf-<  
break; [7'#~[a~  
SortUtil.swap(queue,j,k); @81-kdTx  
k = j; sRi?]9JIl  
} 6$;L]<$W>  
} (*MNox?w  
B>sCP"/uV  
} 8W;xi:CC  
c%ZeX%p  
} E(% XVr0W  
AfUZO^<  
SortUtil: qQL.c+%L  
5dqQws-,?1  
package org.rut.util.algorithm; 8^8>qSD1  
qw|JJ  
import org.rut.util.algorithm.support.BubbleSort; o>@=N2n  
import org.rut.util.algorithm.support.HeapSort; sZ]'DH&_(  
import org.rut.util.algorithm.support.ImprovedMergeSort; _2]O^$L  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;CA ?eI  
import org.rut.util.algorithm.support.InsertSort; #FEa 5  
import org.rut.util.algorithm.support.MergeSort; UOw~rK   
import org.rut.util.algorithm.support.QuickSort; |3S'8Oe CI  
import org.rut.util.algorithm.support.SelectionSort;  NvUu.  
import org.rut.util.algorithm.support.ShellSort; ud yAP>  
]{(l;k9=e  
/** ~B<97x(X  
* @author treeroot 09G9nu;&{  
* @since 2006-2-2 XO0>t{G  
* @version 1.0 z<n"{%  
*/ CdDH1[J  
public class SortUtil { ^eT@!N  
public final static int INSERT = 1; JOJh,8C) 6  
public final static int BUBBLE = 2; XpR.rq$]  
public final static int SELECTION = 3; "EN98^ Sl  
public final static int SHELL = 4; UHr {  
public final static int QUICK = 5; {cmo^~[L$  
public final static int IMPROVED_QUICK = 6; ok%EqO  
public final static int MERGE = 7; ,>&?ty9o  
public final static int IMPROVED_MERGE = 8; $[j-C9W  
public final static int HEAP = 9; 5LO4P>fq  
9!5b2!JL  
public static void sort(int[] data) { jaK'W  
sort(data, IMPROVED_QUICK); a ZI>x^X  
} 5woIGO3X  
private static String[] name={ KLG6QBkj  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4sj9Z:  
}; +Y^-e.UO  
'uPxEu4 >4  
private static Sort[] impl=new Sort[]{ Sc%aJ1  
new InsertSort(), /z/hUa  
new BubbleSort(), *Hx j_  
new SelectionSort(), \nC5 ,Rz  
new ShellSort(), uFGv%W  
new QuickSort(), ? UxG/]",  
new ImprovedQuickSort(), BO8%:/37[4  
new MergeSort(), cC b>zI  
new ImprovedMergeSort(), ;>inT7?3|  
new HeapSort() 9@( O\xr  
}; uG2Xkj  
ARmu{cL  
public static String toString(int algorithm){ BXT 80a\  
return name[algorithm-1]; n"XdHW0  
} $|>6z_3%  
?+bTPl;%'  
public static void sort(int[] data, int algorithm) { Tf9&,!>V  
impl[algorithm-1].sort(data); JCM)N8~i  
} UN,<6D3\b  
-;sJ25(  
public static interface Sort { aw %>YrJ  
public void sort(int[] data); "CIpo/ebL  
} `DI{wqV9  
<FXQxM5"  
public static void swap(int[] data, int i, int j) { HT{F$27W  
int temp = data; 6>@(/mh*  
data = data[j]; J%:WLQo  
data[j] = temp; bk/.<Rt  
} +<'uw  
} NFdJb\  
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