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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。 _py2kjA6  
插入排序: 9]_GNk-D  
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package org.rut.util.algorithm.support; Pl~P-n  
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import org.rut.util.algorithm.SortUtil; m=&j@  
/** zsTbdF  
* @author treeroot #7z|mVzH  
* @since 2006-2-2 V; 9 }7mw  
* @version 1.0 ? J|4l[x  
*/ CD?&<NV  
public class InsertSort implements SortUtil.Sort{ "xwM+AC  
,# "(Z  
/* (non-Javadoc) 4'At.<]jL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {},;-%xE  
*/ cNP/<8dq  
public void sort(int[] data) { $@87?Ab  
int temp; VbxAd 2')  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P79R~m`  
} P%GkcV  
} 2bA#D%PHD  
} y1(P<7:t?  
E#h~V5Tf  
} Lb q_~   
R# 6H'TVE  
冒泡排序: 29O]S8  
G\/IM  
package org.rut.util.algorithm.support; {,V$*  
b:B [3|  
import org.rut.util.algorithm.SortUtil; A +!sD5d  
:`<psvd  
/** ;nf&c;D  
* @author treeroot Z ps&[;R$-  
* @since 2006-2-2 HU[oR4E  
* @version 1.0 W'G{K\(/  
*/ LkaG[^tfN  
public class BubbleSort implements SortUtil.Sort{ g3a/;wl  
9A*rE.B+W  
/* (non-Javadoc) v!!;js^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }vsO^4Sjc  
*/ |LFUzq>j  
public void sort(int[] data) { *SGlqR['\e  
int temp; 6<76O~hNZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){  ("F)  
if(data[j] SortUtil.swap(data,j,j-1); QE6El'S  
} xK!DtRzsA  
} {*__B} ,N  
} DrFur(=T  
} HwW6tQ  
'8Qw:fh  
} n'3u] ~7^  
q4k`)?k9  
选择排序: SauHFl8?  
B$DZ]/<  
package org.rut.util.algorithm.support; \CtQ*[FmN  
V@Kn24''  
import org.rut.util.algorithm.SortUtil; /.2u.G  
Dpj-{q7C  
/** |=,83,a  
* @author treeroot 9RB`$5F ;  
* @since 2006-2-2 Lv3XYZgW~  
* @version 1.0 <4sj@C  
*/ sr4jQo  
public class SelectionSort implements SortUtil.Sort { _2; ^v`[  
[lOf|^9  
/* *k!(ti[  
* (non-Javadoc) l-MxLcz  
* =1Ri]b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tU(y~)]  
*/ iW;}%$lVX  
public void sort(int[] data) { Vbo5`+NAis  
int temp; -3\7vpcdN  
for (int i = 0; i < data.length; i++) { uX98iJ  
int lowIndex = i; 1ThwvF%Qo  
for (int j = data.length - 1; j > i; j--) { |a>}9:g,=*  
if (data[j] < data[lowIndex]) { psu OJ-  
lowIndex = j; 6#O#T;f)  
} DQMPAj.  
} lD-V9   
SortUtil.swap(data,i,lowIndex); @kz!{g]Sn  
} #>" }q3RO  
} ]79~:m[C  
"I@v&(Am;  
} h)^dB,~  
T G_bje  
Shell排序: >6IXuq  
hR!}u}ECd  
package org.rut.util.algorithm.support; f.J 9) lfb  
8.[&wy U  
import org.rut.util.algorithm.SortUtil; 5St`@  
di--:h/  
/** Yg[ v/[]  
* @author treeroot fEB195#@9  
* @since 2006-2-2 xv^Sh}\}  
* @version 1.0 Ut]2`8-  
*/ (1rJFl!  
public class ShellSort implements SortUtil.Sort{ =l_rAj~I|  
[gpOu TW  
/* (non-Javadoc) c%ZeX%p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xC[~Fyhp  
*/ H_Iim[v#  
public void sort(int[] data) { El'yiJ  
for(int i=data.length/2;i>2;i/=2){ gxI&f  
for(int j=0;j insertSort(data,j,i); .N/GfR`0/<  
} ^p$1D  
} 5/ tj  
insertSort(data,0,1); qZXyi'(d  
}  NvUu.  
"\4]X"3<+  
/** d[) _sa  
* @param data .F4oo=  
* @param j 6`_!?u7  
* @param i w~4 z@/^"p  
*/ Vu_&~z7h  
private void insertSort(int[] data, int start, int inc) { "EN98^ Sl  
int temp; aF,j J}On  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8oa)qaG1  
} MJ1W*'9</W  
} "fRlEO[9  
} |^Y*~d<H  
xR *5q1j  
} D}mo\  
r4 9UJE  
快速排序: MhHr*!N"}  
)!N2'Ld  
package org.rut.util.algorithm.support; Q.r B\8ea  
[&1iF1)4  
import org.rut.util.algorithm.SortUtil; I%pCm||p  
2^cAK t6bC  
/** w/qQ(]n8  
* @author treeroot DhY;pG,t  
* @since 2006-2-2 =ZCH1J5"  
* @version 1.0 6].yRNy"  
*/ 8dr0 DF$c  
public class QuickSort implements SortUtil.Sort{ T {hyt  
Tf9&,!>V  
/* (non-Javadoc) R"m.&%n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yonJd  
*/ 3js)niT9u  
public void sort(int[] data) { ;X+G6F'  
quickSort(data,0,data.length-1); -X`~;=m>U  
} Sja"(sJ  
private void quickSort(int[] data,int i,int j){ p3V9ikyy  
int pivotIndex=(i+j)/2; F;cI0kP=>  
file://swap {fAh@:{@  
SortUtil.swap(data,pivotIndex,j); + #|'|}j  
6$W-?  
int k=partition(data,i-1,j,data[j]); $ 1ak I  
SortUtil.swap(data,k,j); zi?qK?m  
if((k-i)>1) quickSort(data,i,k-1); ;e&hM\p  
if((j-k)>1) quickSort(data,k+1,j); 1gF*Mf_7  
uU8*$+ "  
} N b#H@zm  
/** ^AovkK(p  
* @param data Ln"+nKr  
* @param i fMWXo)rzj  
* @param j B ]|5?QP-  
* @return $k a1X&f  
*/ X !&"&n  
private int partition(int[] data, int l, int r,int pivot) { C!aX45eg  
do{ "U/NMGMj  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F!z! :yp  
SortUtil.swap(data,l,r); rnzsfr-|(2  
} E'S<L|A/  
while(l SortUtil.swap(data,l,r); [+ %p!T  
return l; D6C -x  
} J,dG4.ht  
#J%h!#3g  
} "wc`fg"3  
#Z2>TN  
改进后的快速排序: Sa?~t3*H  
UD Iac;vT  
package org.rut.util.algorithm.support; R7\{w(`K  
|R_xY=z?  
import org.rut.util.algorithm.SortUtil; t[H_6)  
&lXx0 "-$  
/** -9tXv+v?  
* @author treeroot )_x8?:lv  
* @since 2006-2-2 d\1:1ucV  
* @version 1.0 D{&+7C:8.  
*/ Gaw,1Ow!`2  
public class ImprovedQuickSort implements SortUtil.Sort { _umO)]Si  
,b2O^tJF#  
private static int MAX_STACK_SIZE=4096; I&Eg-96@  
private static int THRESHOLD=10; b&|YQW} ~  
/* (non-Javadoc) S7\|/h:4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6`$,-(J=  
*/ AW{/k'%xw  
public void sort(int[] data) { -\sKSY5{R  
int[] stack=new int[MAX_STACK_SIZE]; *aSRKY  
#nMP (ShK  
int top=-1; eAenkUBz6,  
int pivot; 8WLh]MD`  
int pivotIndex,l,r; >.k@!*  
1W6n[Xg  
stack[++top]=0; a*$1la'Uf  
stack[++top]=data.length-1; J^<j=a|D  
?tal/uC  
while(top>0){ )Or:wFSMq  
int j=stack[top--]; R!M|k%(  
int i=stack[top--]; `6l24_eKf  
@Tj  6!v  
pivotIndex=(i+j)/2; :67d>wb  
pivot=data[pivotIndex]; PauFuzPP  
DrVbx  
SortUtil.swap(data,pivotIndex,j); n(F<  
:ayO+fr#  
file://partition "78cl*sD  
l=i-1; ]cO$E=W  
r=j; }O-%kl  
do{ (WU~e!}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5kL#V  
SortUtil.swap(data,l,r); Zqe[2()  
} -%QEzu&  
while(l SortUtil.swap(data,l,r); oVj A$|  
SortUtil.swap(data,l,j); S+\Mt+o  
\2LA%ZU  
if((l-i)>THRESHOLD){ %/,Uk+3p  
stack[++top]=i; xBx?>nN  
stack[++top]=l-1; tX2>a  
} ,:Y=,[n  
if((j-l)>THRESHOLD){ )F9%^a(  
stack[++top]=l+1; P$#}-15?|_  
stack[++top]=j; *IfIRR>3l(  
} IEKX'+t'  
 OG<]`!"  
} 6T'43h. :  
file://new InsertSort().sort(data); ;{)@ghD  
insertSort(data); c=c.p i"s  
} FK,r<+h  
/** U=*q;$L#  
* @param data S g_?.XZc[  
*/ L[9+xK^g  
private void insertSort(int[] data) { uC$4TnoQx.  
int temp; XzRWY\x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iF2IR {h  
} f \%X 7.  
} fJN9+l  
} orN2(:Ct7  
mjJlXA  
} qb/!;U_  
U},W/g-  
归并排序: Z-r0 D  
*g_>eNpXD  
package org.rut.util.algorithm.support; F u=VY{U4  
9"v ox   
import org.rut.util.algorithm.SortUtil; 6/[h24d  
u=N;P  
/** m`w6wz  
* @author treeroot \>CBam8d  
* @since 2006-2-2 |@4h z9~3  
* @version 1.0 lu(Omds+  
*/ \fGYJ37  
public class MergeSort implements SortUtil.Sort{ f#JF5>o  
ZX RN?b  
/* (non-Javadoc) ]$X=~>w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :=KGQ3V~eK  
*/ A7}|VV  
public void sort(int[] data) { Ts *'f  
int[] temp=new int[data.length]; t"m`P1  
mergeSort(data,temp,0,data.length-1); %JU23c*  
} k$m X81  
m<;" 1<k  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]-]@=qYu  
int mid=(l+r)/2; H0:6zSsc=|  
if(l==r) return ; HCCp<2D"C  
mergeSort(data,temp,l,mid); 6#-; ,2i  
mergeSort(data,temp,mid+1,r); T</gWW  
for(int i=l;i<=r;i++){ SVeU7Q6-  
temp=data; G&B}jj  
} =|^W]2W$  
int i1=l; )bJ6{&  
int i2=mid+1; Hw3 ES  
for(int cur=l;cur<=r;cur++){ .jU0Hu{F4  
if(i1==mid+1) F>nrV  
data[cur]=temp[i2++]; P =Gb  
else if(i2>r) YS6az0ie  
data[cur]=temp[i1++]; VZl0)YLK  
else if(temp[i1] data[cur]=temp[i1++]; {:+^[rer j  
else >I ; #BE3  
data[cur]=temp[i2++]; <GlV!y  
} &cejy>K  
} l"g%vS,;`  
~H."{  
} KAaeaiD  
~d8o,.n`1  
改进后的归并排序: 1Vvx@1  
B(NL3WJ  
package org.rut.util.algorithm.support; Y& %0 eI!  
%Q01EjRes  
import org.rut.util.algorithm.SortUtil; $VNn`0^gF  
,RH986,6V  
/** $fG/gYvI\  
* @author treeroot b .@dUuKz-  
* @since 2006-2-2 JB}h }nb  
* @version 1.0 U}TQXYAg  
*/ <T9m.:l  
public class ImprovedMergeSort implements SortUtil.Sort { <o`]wOrl  
%^A++Z$`  
private static final int THRESHOLD = 10; NsK>UJ'  
'S>Jps@  
/* |]^! 4[!U  
* (non-Javadoc) :RG6gvz  
* eu/Sp3@v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VUhu"h@w%  
*/ 6 d6SP)|j  
public void sort(int[] data) { 7qp|Msf},  
int[] temp=new int[data.length]; n\,W:G9AR7  
mergeSort(data,temp,0,data.length-1); epe}^Pl  
} pm|]GkM  
QJ'C?hn  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4\iQ%fb  
int i, j, k; [Y+ bW#'  
int mid = (l + r) / 2; w Nnb@  
if (l == r) 3iwZUqyq  
return; S d -+a  
if ((mid - l) >= THRESHOLD) 1NJ|%+I  
mergeSort(data, temp, l, mid); =@ RVLml  
else <#Dc(VhT  
insertSort(data, l, mid - l + 1); $'wl{D"  
if ((r - mid) > THRESHOLD) S6I8zk)Z4  
mergeSort(data, temp, mid + 1, r); 5}VP-04vh  
else 4G2V{(@QiZ  
insertSort(data, mid + 1, r - mid); ^%.<(:k[L  
 su$juI{  
for (i = l; i <= mid; i++) { 0>Nq$/!  
temp = data; irS62Xe  
} j=LF1dG"  
for (j = 1; j <= r - mid; j++) { n9yxZu   
temp[r - j + 1] = data[j + mid]; .Dz /MSl  
} YFY)Z7fK  
int a = temp[l]; Ek6W:Q:@  
int b = temp[r]; fq'Of wT  
for (i = l, j = r, k = l; k <= r; k++) { agzG  
if (a < b) { 7BnP,Nd"W  
data[k] = temp[i++]; wH.'EC  
a = temp; 0v?,:]A0E  
} else { TgLlmU*qMU  
data[k] = temp[j--]; !ywc).]e  
b = temp[j]; z m%\L/BF  
} %K4-V5f  
} 5s9~rm  
} kaLRI|hC  
`y(3:##p  
/** ObUQB+  
* @param data bYfcn]N  
* @param l @\a- =  
* @param i SF7Kb`>Y  
*/ _rv_-n]"o  
private void insertSort(int[] data, int start, int len) { SzDi= lY  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Fei$94 a  
} - U|4`{PP  
} ]z,?{S  
} R!=XMV3$PH  
} cVMTT]cj1  
/[p4. FL  
堆排序: AWzpk }\  
MD,-<X)Qy  
package org.rut.util.algorithm.support; K(?7E6\vO  
W*0KAC`m  
import org.rut.util.algorithm.SortUtil; !PgYn  
qr*/}F6  
/** A8?>V%b[Y  
* @author treeroot ?$?Ni)Z  
* @since 2006-2-2 5R4 dN=L*1  
* @version 1.0 q^s$4q  
*/ t9kgACo/M  
public class HeapSort implements SortUtil.Sort{ *\/UT  
a?;{0I:Ln  
/* (non-Javadoc) Y<B| e91C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IpWl;i`__  
*/ q&vr;f B2  
public void sort(int[] data) { l"+=z.l6;  
MaxHeap h=new MaxHeap(); l}m@9 ~oC  
h.init(data); {0|^F!1z  
for(int i=0;i h.remove(); ms?h/*E<H  
System.arraycopy(h.queue,1,data,0,data.length); $I.'7 &h;  
} (b(iL\B$D=  
\Tc$P#  
private static class MaxHeap{ -6? 5|\  
8WAg{lVs  
void init(int[] data){ )3;S;b  
this.queue=new int[data.length+1]; milU,!7J  
for(int i=0;i queue[++size]=data; js{ RaR=  
fixUp(size); wDsEx!\#  
} fE(rDQI  
} Z'\_YbB  
EfOJ%Xr[,l  
private int size=0; 4`i_ 4&TS  
+=||c \'  
private int[] queue; O@l`D`  
YcIk{_N3  
public int get() { k]v a  
return queue[1]; :5ji.g* 0  
} !nTq"d%(W  
;&iQNXL  
public void remove() { $ED<:[3N  
SortUtil.swap(queue,1,size--); 6JJ%`Uojh  
fixDown(1); 8^O|Aa$IF:  
} %zWtPxAf  
file://fixdown GSypdEBj+w  
private void fixDown(int k) { (`T:b1  
int j; 5R qkAC  
while ((j = k << 1) <= size) { *dGW=aM#C  
if (j < size %26amp;%26amp; queue[j] j++; N/Z<v* i"  
if (queue[k]>queue[j]) file://不用交换 myH#.$=A  
break; =>4,/g3  
SortUtil.swap(queue,j,k); Ra.<D.  
k = j; q K]Wk+  
} q$K^E  
} *vht</?J  
private void fixUp(int k) { cBU>/ zIp  
while (k > 1) { #*5A]"k  
int j = k >> 1; ~/QzL.S;p  
if (queue[j]>queue[k]) p!173y,nL  
break; s@0#w*N  
SortUtil.swap(queue,j,k); p VLfZ?78  
k = j; p=T]%k*^h#  
} z[l17+v  
} 7GpSWM6  
kZfO`BVL  
} p5E|0p  
^ygN/a>rr  
} D/rKqPp|!  
6:@tHUm  
SortUtil: p^NYJV  
Drc\$<9c@  
package org.rut.util.algorithm; "QA!z\0\  
{l! [{  
import org.rut.util.algorithm.support.BubbleSort; *joM[ML` 6  
import org.rut.util.algorithm.support.HeapSort; 2UA h^i-^  
import org.rut.util.algorithm.support.ImprovedMergeSort; S&FMFXF@  
import org.rut.util.algorithm.support.ImprovedQuickSort; !'MZeiLP  
import org.rut.util.algorithm.support.InsertSort; nx8 4l7<  
import org.rut.util.algorithm.support.MergeSort; Xrc0RWXB8  
import org.rut.util.algorithm.support.QuickSort; [Cvo^cC  
import org.rut.util.algorithm.support.SelectionSort; ! p458~|  
import org.rut.util.algorithm.support.ShellSort; &?v^xAr?B  
LsoP >vJG  
/** x%5n&B  
* @author treeroot %3|0_  
* @since 2006-2-2 X^7bOFWE  
* @version 1.0 ohOze\T)=  
*/ [PdatL2  
public class SortUtil { R=xT\i{4h  
public final static int INSERT = 1; YOy/'Le^:  
public final static int BUBBLE = 2; ZU5hHah.t  
public final static int SELECTION = 3; %TP0i#J  
public final static int SHELL = 4; ,aU_bve  
public final static int QUICK = 5; !D!Q]M5oU  
public final static int IMPROVED_QUICK = 6; \IQf|  
public final static int MERGE = 7; ?l &S:` L  
public final static int IMPROVED_MERGE = 8; k7'_  
public final static int HEAP = 9; =bi:<%"  
q{nNWvL  
public static void sort(int[] data) { [8v v[n/  
sort(data, IMPROVED_QUICK); c=0S]_  
} S=*rWh8)%<  
private static String[] name={ 7o-umZ}8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *0^!%Y'/4  
}; g ]e^;  
%4*-BCP  
private static Sort[] impl=new Sort[]{ ;`p+Vs8C  
new InsertSort(), Tu"bbc  
new BubbleSort(), C4Z}WBS(  
new SelectionSort(), kj{z;5-dl  
new ShellSort(), d="Oge8  
new QuickSort(), d kVF  
new ImprovedQuickSort(), Z ]V^s8>  
new MergeSort(), M_lQ^7/  
new ImprovedMergeSort(), Uus%1hC%a  
new HeapSort() S~X&^JvT  
}; j")#"& m  
,@!io  
public static String toString(int algorithm){ '#LbIv4  
return name[algorithm-1]; E!nEB(FD  
} @TBcVHy  
33IJbg  
public static void sort(int[] data, int algorithm) { pBl'SQccp  
impl[algorithm-1].sort(data); dCc"Qr[k  
} }tJR Bb  
g?&_5)&  
public static interface Sort { Xo[j*<=0  
public void sort(int[] data); 5-qk"@E W  
} .,[ NJ:l  
OCHjQc  
public static void swap(int[] data, int i, int j) { &.^(, pt  
int temp = data; $23*:)&J4  
data = data[j]; goBl~fqy0  
data[j] = temp; G8AT] =  
} #@%DY*w]v  
} +U9m  
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