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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。 zKMv7;s?  
插入排序: !qS05  
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package org.rut.util.algorithm.support; 40+fGRyOL  
1:5P%$?b  
import org.rut.util.algorithm.SortUtil; W U0UG$o`  
/** % &2B  
* @author treeroot 1O4D+0@  
* @since 2006-2-2 .S(^roM;+  
* @version 1.0 -s33m]a;  
*/ V^WQ6G1  
public class InsertSort implements SortUtil.Sort{ x3_,nl  
4V>vg2 d  
/* (non-Javadoc) wRj~Qv~E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !,R  
*/ 'N|2vbi<  
public void sort(int[] data) { )2toL5Q  
int temp; "d:.*2Z2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5@iy3olP  
} uzO {{S-  
} %'kX"}N/  
} Q>V?w gZ  
dkETM,  
} E4hq}  
6\XP|n-0+0  
冒泡排序: C~:b*X   
@X|ok*v`  
package org.rut.util.algorithm.support; 2-PI JO  
#'#4hJ*YC  
import org.rut.util.algorithm.SortUtil; Qk|( EFQ9  
A?\h|u<  
/** <kROH0+  
* @author treeroot ]y$)%J^T  
* @since 2006-2-2 XpOCQyFnM  
* @version 1.0 2k%Bl+I  
*/ *P&OxVz  
public class BubbleSort implements SortUtil.Sort{ #T Z!#,q  
sek6+#|=  
/* (non-Javadoc) bL+sN"Km  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F=:F>6`  
*/ byp.V_a}/  
public void sort(int[] data) { bx1G CD  
int temp; 4;08n|C  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1LV|t+Sex  
if(data[j] SortUtil.swap(data,j,j-1); 1a \=0=[  
} oC5gME"2  
} w($XEv;  
} ;<86P3S  
} G1,Ro1  
jc3ExOH  
} g8C+1G8  
w;@`Yi.WQ  
选择排序: h<t<]i'  
$[WN[J  
package org.rut.util.algorithm.support; Vx0MG{vG1  
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import org.rut.util.algorithm.SortUtil; A;K{&x  
Vjv6\;tt8  
/** 0;. e#(`-  
* @author treeroot NHst7$Y<  
* @since 2006-2-2 8f5%xY$  
* @version 1.0 #u!y`lek  
*/ @`#OC#  
public class SelectionSort implements SortUtil.Sort { :==UDVP  
:FEd:0TS  
/* pmE1EDPag  
* (non-Javadoc) 37GHt9l  
* &e5^v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aTmX!!  
*/ p]atH<^;K  
public void sort(int[] data) { $6qR/#74  
int temp; rElG7[+)p  
for (int i = 0; i < data.length; i++) { lk5_s@V l  
int lowIndex = i; \J#I}-a&j  
for (int j = data.length - 1; j > i; j--) { wpPxEp/  
if (data[j] < data[lowIndex]) { B$iMU?B3  
lowIndex = j; @pyA;>U  
} B)LXxdkOn  
} sZ\i(eIU  
SortUtil.swap(data,i,lowIndex); GLoL4el  
} `0/gs  
} x %!OP\  
JJ= ~o@|c  
} vErbX3RY2  
Av\ 0GqF  
Shell排序: WoN]eO  
c"jhbH!u4  
package org.rut.util.algorithm.support; 8DmX4*  
[K^q: 3R  
import org.rut.util.algorithm.SortUtil; 0o\=0bH&s  
DXw9@b  
/** ! 7#froh  
* @author treeroot /-cX(z 7  
* @since 2006-2-2 G=0}IPfp  
* @version 1.0 Y?q*hS0!H  
*/ _16 &K}<  
public class ShellSort implements SortUtil.Sort{ ui:>eYv  
S -mzxj  
/* (non-Javadoc) 3]5&&=#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CMD`b  
*/ `~s,W.Eu4  
public void sort(int[] data) { +P<w<GfQ  
for(int i=data.length/2;i>2;i/=2){ RI< Yg#   
for(int j=0;j insertSort(data,j,i); blQzVp-  
} {e!uvz,e  
} "!4>gg3r  
insertSort(data,0,1); XzTH,7[n  
} H;"N|pBy  
-p]`(S%  
/** ~dX@5+Gd  
* @param data ;Bc<u[G  
* @param j Yk*57&QI  
* @param i [n@!=T  
*/ T W;;OS[  
private void insertSort(int[] data, int start, int inc) { *p<5(-J3  
int temp; F<'l'AsC-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^_"q`71Dk  
} pDnFT2  
} "vHAp55B{  
} F7PZV+\  
oKqFZ,m[  
} %l$&_xV-  
P+cFp7nC  
快速排序: NX #/1=  
R S_lQ{'  
package org.rut.util.algorithm.support; JnKbd~  
C%7,#}[U/  
import org.rut.util.algorithm.SortUtil; -W"0,.Dvg  
Bv|9{:1%X}  
/** ="nrq&2  
* @author treeroot f0`rJ?us  
* @since 2006-2-2 x@R A1&c  
* @version 1.0 +53zI|I  
*/ sYW)h$p;D  
public class QuickSort implements SortUtil.Sort{ |~vQ0D  
GP k Cgb(  
/* (non-Javadoc) 0GR9C%"]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zbKW.u]v  
*/ "+ JwS  
public void sort(int[] data) { *"bp}3$^^  
quickSort(data,0,data.length-1); ,$(v#Tz  
} :[rKSA]@  
private void quickSort(int[] data,int i,int j){ @ tp7tB ;  
int pivotIndex=(i+j)/2; av$_hEjo|D  
file://swap r4>I?lD  
SortUtil.swap(data,pivotIndex,j); l,2z5p  
2%yJo7f$[  
int k=partition(data,i-1,j,data[j]); 4E(5Ccb  
SortUtil.swap(data,k,j); !>);}J!e]  
if((k-i)>1) quickSort(data,i,k-1); 2cL )sP}  
if((j-k)>1) quickSort(data,k+1,j); aw~EK0yU   
NS~knR\&  
} ~0{Kga  
/** \uPTk)oaB  
* @param data %4KJ&R (>[  
* @param i qiryC7.E  
* @param j beR)8sC3q  
* @return 1@dx(_  
*/ 25[/'7_"  
private int partition(int[] data, int l, int r,int pivot) { V-r<v1}M  
do{ pREY AZh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =eLb"7C#0  
SortUtil.swap(data,l,r); z$5C(!)  
} cY]Y8T)  
while(l SortUtil.swap(data,l,r); Xkm2C)  
return l; ,F Vy:"FR  
} 5hK\YTU  
tP{$}cEY  
} )fL*Ws6  
<BA&S _=4  
改进后的快速排序: qE:DJy <  
~B\:  
package org.rut.util.algorithm.support; r,KK%B  
9?c^~77  
import org.rut.util.algorithm.SortUtil; mnj A8@1  
9X` QlJ2|  
/** $3B?  
* @author treeroot ,4,c-   
* @since 2006-2-2 VrxH6Y  
* @version 1.0 PtOnj)Q  
*/ e_-/p`9  
public class ImprovedQuickSort implements SortUtil.Sort { w5jZI|  
LTct0Gh  
private static int MAX_STACK_SIZE=4096; 1z:N$O _v  
private static int THRESHOLD=10; ~Xw?>&  
/* (non-Javadoc) j #YFwX4.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %MNV 5UA[w  
*/ 1D6O=j\  
public void sort(int[] data) { `p|vutk)U  
int[] stack=new int[MAX_STACK_SIZE]; uJ[Vv4N%9  
V/e_:xECC  
int top=-1; hspg-|R  
int pivot; $twF93u$  
int pivotIndex,l,r; i@L2W>{P  
qT @IY)e  
stack[++top]=0; ]H2aYi$  
stack[++top]=data.length-1; ~\,6 C1M  
q+~CA[H5K  
while(top>0){ !g"9P7p  
int j=stack[top--]; UV.9 KcN.  
int i=stack[top--]; )7J>:9h  
SI5QdX  
pivotIndex=(i+j)/2; eS:e#>(  
pivot=data[pivotIndex]; [^~9wFNtd  
6QQ oHYtZ  
SortUtil.swap(data,pivotIndex,j); [CX?Tt  
k^jCB>b  
file://partition F2'cL@E3  
l=i-1; =)8fE*[s   
r=j; @x +#ZD(  
do{ G|_aU8b|t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wP?q5r5  
SortUtil.swap(data,l,r); =U2n"du  
} )A=g# D#  
while(l SortUtil.swap(data,l,r); Uiw7Y\Im|  
SortUtil.swap(data,l,j); IoOnS)  
7+4"+CA  
if((l-i)>THRESHOLD){ ]{^vs'as\  
stack[++top]=i; 5&= n  
stack[++top]=l-1; Ypj)6d  
} >/bK?yT<  
if((j-l)>THRESHOLD){  _Qc\v0%  
stack[++top]=l+1; K9'*q3z  
stack[++top]=j; ;jI"|v{vnS  
} *!@x<Hf<  
W[<":NX2  
} vyGLn  
file://new InsertSort().sort(data); ^?[<!VBI  
insertSort(data); ',Pk>f]AB-  
} %=y3  
/** 1G.gPx[  
* @param data rxeXz<  
*/ 2tm-:CPG  
private void insertSort(int[] data) { LfXr(2u  
int temp; yt: V+qdv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?<^AXLiKV  
} Cbs4`D,  
} /,$\H  
} *r$.1nke  
T<k1?h^7  
} G>>u#>0  
)0MshgM  
归并排序: &novkkqY  
0.+eF }'H  
package org.rut.util.algorithm.support; 1t=X: ]0j  
WTs[Sud/  
import org.rut.util.algorithm.SortUtil; bv>lm56  
N@a'd0oTd  
/** i9k]Q(o  
* @author treeroot &})d%*n  
* @since 2006-2-2 '?3z6%  
* @version 1.0 e4%*I8 ^e  
*/ 810<1NP  
public class MergeSort implements SortUtil.Sort{ EFt`<qwj  
| 8Egw-f  
/* (non-Javadoc) slvs oN@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,T*_mDVY  
*/ "`*a)'.'^c  
public void sort(int[] data) { dN/ "1%9)  
int[] temp=new int[data.length]; 1za'u_  
mergeSort(data,temp,0,data.length-1); i)PV{3v$J  
} U3+ _'"  
'qF3,Rw  
private void mergeSort(int[] data,int[] temp,int l,int r){ 'EET3R K-S  
int mid=(l+r)/2; Bd~cY/M  
if(l==r) return ; 6aZt4Lw2\  
mergeSort(data,temp,l,mid); {F+M&+``  
mergeSort(data,temp,mid+1,r); mQ60@_"Y=,  
for(int i=l;i<=r;i++){ eGe[sv"k  
temp=data; hi D7tb=g~  
} I<(.i!-x  
int i1=l; _Z66[T+M  
int i2=mid+1; Zjic"E1  
for(int cur=l;cur<=r;cur++){ 6SBvn%  
if(i1==mid+1) y(3c{y@~X  
data[cur]=temp[i2++]; @f5@0A\0  
else if(i2>r) ^8oc^LOa~2  
data[cur]=temp[i1++]; {[t"O u  
else if(temp[i1] data[cur]=temp[i1++]; @Gn?8Ur%  
else jo;uRl  
data[cur]=temp[i2++]; S|q!? /jqj  
} DR yESi  
} hi3sOK*r;<  
NBqV0>vR  
} x !:9c<  
:ONuWNY N  
改进后的归并排序: :m++ iR  
Y!= k  
package org.rut.util.algorithm.support; Q%n{*py  
yXTK(<'  
import org.rut.util.algorithm.SortUtil; 7moElh v  
j.;  
/** y  KYP  
* @author treeroot KM6N'x^z  
* @since 2006-2-2 ?bt`fzX{l  
* @version 1.0 Cl t5  
*/ NlF0\+h  
public class ImprovedMergeSort implements SortUtil.Sort { ,5\2C{  
#6N+5Yx_[  
private static final int THRESHOLD = 10; p]h*6nH>~  
xI@$aTGq  
/* GDHK.?GY  
* (non-Javadoc) &SjHrOG?  
* ~&DB!6*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SLdN.4idK  
*/ 2JiAd*WK  
public void sort(int[] data) { . 0 s[{x  
int[] temp=new int[data.length]; v@fe-T&0  
mergeSort(data,temp,0,data.length-1); 15xd~V?ai:  
} 7b&JX'`Mb  
fO^e+M z  
private void mergeSort(int[] data, int[] temp, int l, int r) { pHen>BA[  
int i, j, k; UCn*UX  
int mid = (l + r) / 2; 'dIX=/RZ  
if (l == r) axK6sIxx  
return; n+{HNr  
if ((mid - l) >= THRESHOLD) )-+\M_JK5  
mergeSort(data, temp, l, mid); c=A(o  
else O{k89{  
insertSort(data, l, mid - l + 1); eg"=H50  
if ((r - mid) > THRESHOLD) 1B)Y;hg6&  
mergeSort(data, temp, mid + 1, r); Iv$:`7|crX  
else CM%|pB/z  
insertSort(data, mid + 1, r - mid); <w0NPrS]  
vKNt$]pm=  
for (i = l; i <= mid; i++) { =\~E n5  
temp = data; r]A" Og_U  
} W@I 02n2 H  
for (j = 1; j <= r - mid; j++) { uiktdZ/f  
temp[r - j + 1] = data[j + mid]; #ZG3|#Q=L  
} B4]AFRI  
int a = temp[l]; tg.|$n  
int b = temp[r]; -DTB6}kw  
for (i = l, j = r, k = l; k <= r; k++) { &w+;N5}3  
if (a < b) { }.0Bl&\UK  
data[k] = temp[i++]; %1Bn_  
a = temp; *#3*;dya]  
} else { 0:Ar| to$m  
data[k] = temp[j--]; x|]\1sb"  
b = temp[j]; aSc{Ft/O  
} KK?Zm_  
} 7#QLtU  
} uxWFM $  
 }10\K  
/** _p\629`  
* @param data "mP&8y 9F  
* @param l B?+ .2  
* @param i 'eD J@4Xm  
*/ KX!i\NHz  
private void insertSort(int[] data, int start, int len) { AgIazv1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &~RR&MdZ2  
} K&*iw`  
} Bd{4Ae\_+g  
} K*~]fy  
} Ab/j(xr=  
:z]}ZZ  
堆排序: !<&m]K  
^$!987"  
package org.rut.util.algorithm.support; (ab{F5  
_5mc('  
import org.rut.util.algorithm.SortUtil; @5WgqB  
#/|75 4]]  
/** \#CM <%  
* @author treeroot bp#:UUO%S  
* @since 2006-2-2 \i!Son.<  
* @version 1.0 f;gZ|a  
*/ Ir5WN_EaS  
public class HeapSort implements SortUtil.Sort{ d6`OXTD  
TI=h_%mO  
/* (non-Javadoc)  B$^7h!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) btH _HE  
*/ ,_D" ?o  
public void sort(int[] data) { Y>B P?l  
MaxHeap h=new MaxHeap(); Po(]rQbE  
h.init(data); 9XX>A*  
for(int i=0;i h.remove(); mffIf1f  
System.arraycopy(h.queue,1,data,0,data.length); JS2nXs1  
} HG%Z "d  
][d,l\gu+s  
private static class MaxHeap{ N L'R\R  
B6] <G-  
void init(int[] data){ 0)|Q6*E>  
this.queue=new int[data.length+1]; Sw8kIC  
for(int i=0;i queue[++size]=data; g%xGOA  
fixUp(size); a{SBCy  
} NOt@M  
} Wkzs<y"  
y#v"GblM  
private int size=0; kS :\Oz\  
:?Y$bX}a  
private int[] queue; }CDk9Xk  
YE}s  
public int get() { ifK%6o6  
return queue[1];  U47}QDh  
} T*~H m  
06*rWu9P3  
public void remove() { zf[`~g  
SortUtil.swap(queue,1,size--); w$|l{VI  
fixDown(1); ~D[?$`x:  
} Z5(enTy-  
file://fixdown ;heHefbvvd  
private void fixDown(int k) { [xb]Wf  
int j; tMp=-"  
while ((j = k << 1) <= size) { }_ mT l@*  
if (j < size %26amp;%26amp; queue[j] j++; }(XdB:C8  
if (queue[k]>queue[j]) file://不用交换 ($nrqAv4  
break; 17.x0 gW,  
SortUtil.swap(queue,j,k); ]@^coj[  
k = j; w}R~C   
} %\$;(#h  
} H ?M/mGP  
private void fixUp(int k) { wJ<Oo@snm  
while (k > 1) { 8}e,%{q  
int j = k >> 1; }MbH3ufC  
if (queue[j]>queue[k]) . lgPFr6X  
break; HO)/dZNU  
SortUtil.swap(queue,j,k); Wu6<\^A  
k = j; US [dkbKo  
} mqff]m  
} evA/+F ,&  
YW \0k5[  
} )6KMHG  
CSPKP#,B0[  
}  y! .J  
 ^YdcAHjK  
SortUtil: >>i@r@  
xM[Vc  
package org.rut.util.algorithm; :,b iyJt  
PQKaqv}N  
import org.rut.util.algorithm.support.BubbleSort; jOpcV|2  
import org.rut.util.algorithm.support.HeapSort; .\0isO  
import org.rut.util.algorithm.support.ImprovedMergeSort; m!z|h9Ed  
import org.rut.util.algorithm.support.ImprovedQuickSort; C;QAT  
import org.rut.util.algorithm.support.InsertSort; ,j:|w+l  
import org.rut.util.algorithm.support.MergeSort; dz [!-M  
import org.rut.util.algorithm.support.QuickSort; @yXfBML?]  
import org.rut.util.algorithm.support.SelectionSort; -<v~snq'  
import org.rut.util.algorithm.support.ShellSort; R" )bDy?  
Uy ?  
/** CC\*?BKj"  
* @author treeroot KDl_?9E5  
* @since 2006-2-2 ~c)~015`  
* @version 1.0 m-^ 8W[r+_  
*/ @';B_iQ  
public class SortUtil { ZCKka0*  
public final static int INSERT = 1; x3qW0K8  
public final static int BUBBLE = 2; @/ZF` :   
public final static int SELECTION = 3; 2aJS{[  
public final static int SHELL = 4; oAWzYu(v  
public final static int QUICK = 5; OO?]qZa1  
public final static int IMPROVED_QUICK = 6; E0%~! b  
public final static int MERGE = 7; `qd+f{Q  
public final static int IMPROVED_MERGE = 8; &E xYXI  
public final static int HEAP = 9; `wF8k{Pb  
ebPgYxVZR  
public static void sort(int[] data) { p.+ho~sC,.  
sort(data, IMPROVED_QUICK); upj]6f"(  
} lds- T  
private static String[] name={ HB Iip?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z1^gDjkZ  
}; f2,jh}4  
Dfq(Iv  
private static Sort[] impl=new Sort[]{ |t; ~:A  
new InsertSort(), []a[v%PkG  
new BubbleSort(), asY[8r?U  
new SelectionSort(), s'kDk2r  
new ShellSort(), ^v.,y3  
new QuickSort(), Us+pc^A  
new ImprovedQuickSort(), +}f9   
new MergeSort(), /-bO!RTwf  
new ImprovedMergeSort(), $Of0n` e  
new HeapSort() pABs!A`N  
}; N^Bo .U0\  
[s&$l G!  
public static String toString(int algorithm){  o x+ 3U  
return name[algorithm-1]; gi 0W;q  
} gY@N~'f;"  
B'^:'uG  
public static void sort(int[] data, int algorithm) { _/wV;h~R  
impl[algorithm-1].sort(data); e["2QIOe  
} wm+/e#'&  
fu90]upz~  
public static interface Sort { 4.IU!.Uo  
public void sort(int[] data); rk)##)  
} ` AY_2>7  
M`ip~7"  
public static void swap(int[] data, int i, int j) { P;k0W>~k  
int temp = data; ;]_o4e6\p  
data = data[j]; uL[.ND2._&  
data[j] = temp; d6W SL;$  
} WJ_IuX51'  
} /% kY0 LY  
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