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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。 `YVdIDl]  
插入排序: >KH.~Jfy  
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package org.rut.util.algorithm.support; sDTCV8"w  
n"N!76  
import org.rut.util.algorithm.SortUtil; ~Os"dAgZFY  
/** oFB~)}f<v  
* @author treeroot V%g$LrLVe  
* @since 2006-2-2 6Db1mvSe  
* @version 1.0 Bwj^9J/ob  
*/ } 1^/[?  
public class InsertSort implements SortUtil.Sort{ fdc ?`4  
'e^,#L_!o  
/* (non-Javadoc) -"YQo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |'9%vtbM  
*/ TUHC[#Vb?  
public void sort(int[] data) { f]L`^WU  
int temp; /5 B{szf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j$'L-kK+  
} zPEx;lO$  
} !4\`g?  
} 4G"T{A`O  
oXRmnt  
} -lV]((I&  
G7yCGT)vQ  
冒泡排序: lyNa(3  
Eo 5p-  
package org.rut.util.algorithm.support; f=]+\0MQ  
Pc#8~t}2  
import org.rut.util.algorithm.SortUtil; Ox7v*[x'  
"aIiW VQ  
/** qL.1N~$2  
* @author treeroot VC5LxA0{  
* @since 2006-2-2 j9)P3=s  
* @version 1.0 NNLZ38BV7  
*/ 6d&dB  
public class BubbleSort implements SortUtil.Sort{ 3`uv/O2~i  
)8VrGg?  
/* (non-Javadoc) U??P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3}e-qFlV8,  
*/ CG*eo!Nw  
public void sort(int[] data) { 3B!lE(r%J  
int temp; nAPSs]D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {G&*\5W  
if(data[j] SortUtil.swap(data,j,j-1); Kmc*z (Q  
} ~Mbo`:>(4v  
} =)5O(h  
} 1wP#?p)c  
} h}r*   
s\y+ xa:  
} Z 6KM%R  
2 eo]D?}  
选择排序: R_ymTB}<t(  
A]L;LkEM  
package org.rut.util.algorithm.support; 7ZarXv z  
4scY 8(1  
import org.rut.util.algorithm.SortUtil; H^z6.!$m  
mz$)80ly  
/** Zz}Wg@&  
* @author treeroot  >Eg/ir0  
* @since 2006-2-2 Oya:{d&=  
* @version 1.0 oE \Cwd  
*/ > 2_xRn<P  
public class SelectionSort implements SortUtil.Sort { 2k;>nlVxX  
RnC96"";R.  
/* s ;EwAd(  
* (non-Javadoc) /.B7y(  
* 0t[|3A~Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8oiO:lyLSt  
*/ p vone,y2  
public void sort(int[] data) { _^K)>  
int temp; IaMZPl  
for (int i = 0; i < data.length; i++) { %EkV-%o*  
int lowIndex = i; pxP,cS  
for (int j = data.length - 1; j > i; j--) { Z-X(. Q  
if (data[j] < data[lowIndex]) { bC*( ,n<'  
lowIndex = j; {R<0 'JU  
} ziZLw$ )  
} *W,tq(%tQ  
SortUtil.swap(data,i,lowIndex); J&Ig%&/  
} g$ bbm}6S  
} L c4\i  
?# ~3%$>  
} j_H"m R  
g(Q)fw  
Shell排序: 9RA~#S|(T  
QJiU"1  
package org.rut.util.algorithm.support; Y3@\uM`2#  
\GhL{Awv&a  
import org.rut.util.algorithm.SortUtil; 0'8_:|5  
q)0?aL  
/** xPMTmx?2  
* @author treeroot v0uDL7  
* @since 2006-2-2 -OV:y],-  
* @version 1.0 IIrh|>d_7  
*/ ?pSb,kN}'  
public class ShellSort implements SortUtil.Sort{ 1./ uJB/  
RhwqAok|lj  
/* (non-Javadoc) p1~u5BE7O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U9^o"vT  
*/ z}?*1c  
public void sort(int[] data) { L&h@`NPO a  
for(int i=data.length/2;i>2;i/=2){ FvpaU\D  
for(int j=0;j insertSort(data,j,i); <ua`WRQr  
} @CGci lS=  
} yQ$Q{,S9  
insertSort(data,0,1); X*f#S:kiNU  
} C>l{_J)n  
6&,n\EXF  
/** me-Tv7WL  
* @param data .Ukejx  
* @param j A"|y<  
* @param i  l Ozi|  
*/ zgre&BV0q  
private void insertSort(int[] data, int start, int inc) { @o4+MQFn  
int temp; n-ZOe]3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bu[PQsT  
} Pnf|9?~$H  
} udw>{3>  
} G bW1Lq&"  
t~_j+k0K#  
} Y2lBQp8'|  
+,oEcCi  
快速排序: wxC&KrRF  
n1 k2<BU4b  
package org.rut.util.algorithm.support; K>%}m,  
+5:Dy,F =  
import org.rut.util.algorithm.SortUtil; 4}0DEH.Vx  
U|tUX)9O  
/** aqL#g18  
* @author treeroot hd+(M[C<9  
* @since 2006-2-2 `N;}Gf-'  
* @version 1.0 ^d6}rtG  
*/ YY{0WWua  
public class QuickSort implements SortUtil.Sort{ >i&"{GZ  
{jyI7 r#X  
/* (non-Javadoc) {WokH;a/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kH;DAphk  
*/ =[A5qwyv  
public void sort(int[] data) { ai,\'%N  
quickSort(data,0,data.length-1); M$Sq3m`{!  
} k OYF]^uJ  
private void quickSort(int[] data,int i,int j){ %63zQFk  
int pivotIndex=(i+j)/2; h"C7l#u  
file://swap U&F1}P$fb  
SortUtil.swap(data,pivotIndex,j); 2pr#qh8  
7Iz%Jty  
int k=partition(data,i-1,j,data[j]); 0%x"Va~"z  
SortUtil.swap(data,k,j); hM_0/o-  
if((k-i)>1) quickSort(data,i,k-1); [D;wB|+,  
if((j-k)>1) quickSort(data,k+1,j); 6yn34'yw  
j?c"BF.  
} F7fpsAt7  
/** %E<.\\^%  
* @param data >z{*>i,m1  
* @param i oe (})M  
* @param j \\ZR~f!<  
* @return Rgstk/1  
*/ TRLz>mQ  
private int partition(int[] data, int l, int r,int pivot) { tO?NbWcp  
do{ 6YErF|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8|]r>L$Wk  
SortUtil.swap(data,l,r); o7 :~C]  
} c> SFt tbU  
while(l SortUtil.swap(data,l,r); 5Z8Zb.  
return l; I, 7~D!4G  
} ^|^ywgK  
)Cas0~RM  
} c<k=8P   
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改进后的快速排序: 2wCSjAWWh(  
JD\yl[ac%  
package org.rut.util.algorithm.support; cWp5' e]A  
W;Pdbf"  
import org.rut.util.algorithm.SortUtil; 3VI[*b  
Fx@ovI- 5  
/** g?7I7W~?`  
* @author treeroot 7LFJi@*8  
* @since 2006-2-2 F.rNh`44  
* @version 1.0 Xu.Wdl/{Ra  
*/ 7lLh4__;`6  
public class ImprovedQuickSort implements SortUtil.Sort { `s )- lI  
D,3Kx ^  
private static int MAX_STACK_SIZE=4096; `j#zwgUs  
private static int THRESHOLD=10; :D|5E>o(  
/* (non-Javadoc) W?>C$_p C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wo#,c(  
*/ v[7iWBqJ  
public void sort(int[] data) { "=0(a)01p:  
int[] stack=new int[MAX_STACK_SIZE]; ?IN'Dc9&%-  
24g\x Nnt  
int top=-1; :CeK 'A\  
int pivot; &b__ /o  
int pivotIndex,l,r; p&s~O,Bw$  
TmS-w  
stack[++top]=0; 3-=f@uH!  
stack[++top]=data.length-1; &g;&=<#I  
I>bO<T`  
while(top>0){ pftnF OLO  
int j=stack[top--]; $q$G  
int i=stack[top--]; ~cf*Oq  
-n:~m p  
pivotIndex=(i+j)/2; AT:L&~O.  
pivot=data[pivotIndex]; "^froQ{"T  
ia9=&Hy])  
SortUtil.swap(data,pivotIndex,j); z [|:HS&  
2iWS k6%R  
file://partition 74wDf  
l=i-1; cj64.C  
r=j; %#jW  
do{ x]Pp|rHj  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); > eC>sTPQ{  
SortUtil.swap(data,l,r); 6*aU^#Hz6  
} =,Zkg(M  
while(l SortUtil.swap(data,l,r); 2FVO@D  
SortUtil.swap(data,l,j); "y9]>9:$-  
'+s?\X4VC  
if((l-i)>THRESHOLD){ R9&3QRW|  
stack[++top]=i; +QW| 8b  
stack[++top]=l-1; '=WPi_Z5:C  
} ez-jVi-Fi  
if((j-l)>THRESHOLD){ q\$k'(k>35  
stack[++top]=l+1; {i^F4A@=Z  
stack[++top]=j; $eq*@5B  
} G`e!WvC  
R<<U(.E  
} e0$.|+  
file://new InsertSort().sort(data); cr`NHl/XF  
insertSort(data); p9y@5z  
} 6/3oW}O o  
/** W]W[oTJ5  
* @param data A"}Ib'  
*/ ?on EqH>  
private void insertSort(int[] data) { 5$?)f&M  
int temp; RxYC]R^78  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;Tec)Fl  
} U^;|as  
} 3sK^ (  
} fq[1|Q  
1xD?cA\vu  
} Y2TXWl,Jk  
H[Q3M~_E  
归并排序: /8? u2 q  
h J H  
package org.rut.util.algorithm.support; g7;OZ#\  
XOoz.GSQ  
import org.rut.util.algorithm.SortUtil; Djr/!j  
,Dy9-o  
/** tu slkOE#  
* @author treeroot 20 Z/Y\  
* @since 2006-2-2 KIGMWS^^  
* @version 1.0 0F%/R^mw  
*/ N[zR%(YS  
public class MergeSort implements SortUtil.Sort{ o}=c (u  
D=jtXQF  
/* (non-Javadoc) 0B]c`$"aD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |%g)H,6c  
*/ ]p@q.P  
public void sort(int[] data) { DP.Y <V)B  
int[] temp=new int[data.length]; ^ AJ_  
mergeSort(data,temp,0,data.length-1); +7 mUX  
} A D%9;KQ8  
5|A"YzY#  
private void mergeSort(int[] data,int[] temp,int l,int r){ xqpq|U  
int mid=(l+r)/2; }a"koL  
if(l==r) return ; -7IRlP&  
mergeSort(data,temp,l,mid); +&4@HHU{G  
mergeSort(data,temp,mid+1,r); &U_T1-UR2  
for(int i=l;i<=r;i++){ Kw =RqF  
temp=data; fP/;t61Z  
} ;3\'}2^|l  
int i1=l; n+1`y8dy  
int i2=mid+1; )tx2lyY:  
for(int cur=l;cur<=r;cur++){ 9hei8L:  
if(i1==mid+1) d-jZ5nl(  
data[cur]=temp[i2++]; "9#hk3*GqX  
else if(i2>r) ) S-Fuq4i4  
data[cur]=temp[i1++]; :0kKw=p1R  
else if(temp[i1] data[cur]=temp[i1++]; 2Mu3] 2>  
else T[- %b9h>  
data[cur]=temp[i2++]; ;qs^+  
} (7C$'T-ZK  
} @GWlo\rM6^  
p+;;01Z+_  
} 5Y>fVq{U?;  
f{-,"6Y1  
改进后的归并排序: u/apnAW@M  
Zm vtUma  
package org.rut.util.algorithm.support; a/n~#5-  
&-L9ws  
import org.rut.util.algorithm.SortUtil; ao"Z%#Jb~  
pQoZDD@B$  
/** RREl($$p  
* @author treeroot E <N%  
* @since 2006-2-2 T>irW(  
* @version 1.0 ? CU;  
*/ R(s[JH(&  
public class ImprovedMergeSort implements SortUtil.Sort { H<"EE15  
YbF}>1/"  
private static final int THRESHOLD = 10; z+c'-!e/  
n5Mhp:zc,  
/* I9h{fB  
* (non-Javadoc) qOAhBZ~  
* 7#j9"*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,U~in)\ U  
*/ %ed TW[C`  
public void sort(int[] data) { P! P` MX  
int[] temp=new int[data.length]; DAy|'%rF1-  
mergeSort(data,temp,0,data.length-1); Mehp]5*  
} *i"Mu00b  
ir5eR}H  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]/|DCxQ  
int i, j, k; #!>`$  
int mid = (l + r) / 2; 0x # V   
if (l == r) {KSy I#  
return; 1ZXRH;J40  
if ((mid - l) >= THRESHOLD) X=? \A{Y  
mergeSort(data, temp, l, mid); | Pqs)Mb]  
else :4)lmIu  
insertSort(data, l, mid - l + 1); L i+|%a  
if ((r - mid) > THRESHOLD) i "aQm  
mergeSort(data, temp, mid + 1, r); .uB[zJc  
else o\qeX|.70  
insertSort(data, mid + 1, r - mid); 0R;`)V\^  
rS0#]Gg  
for (i = l; i <= mid; i++) { Hp@cBj_@P2  
temp = data; ~ujg250.L  
} X{iidTW`xv  
for (j = 1; j <= r - mid; j++) { @ev^e !B  
temp[r - j + 1] = data[j + mid]; PiLLUyQx  
} a YY1*^  
int a = temp[l]; u4xJ-Vu  
int b = temp[r]; lUiO|  
for (i = l, j = r, k = l; k <= r; k++) { `FK qVd  
if (a < b) { 'i;ofJ[.c  
data[k] = temp[i++]; o3`0x9{  
a = temp; d>/4z#R}-  
} else { _I%mY!x\`  
data[k] = temp[j--]; #2+hu^Q-  
b = temp[j]; Xy9'JVV6  
} \5b<!Nl  
} &<) _7?  
} bBQHxH}vi  
9lX[rBZ  
/** V/)3d  
* @param data /x /W>J2  
* @param l T{ lm z<g  
* @param i ^.M_1$-  
*/ w_YY~Af  
private void insertSort(int[] data, int start, int len) { nZ`=Up p)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z.W1Za  
} z u1gP/  
} !9^GkFR6n  
} +EZr@  
} we?t/YB=  
QzYaxNGv  
堆排序: JV! }"[  
r<*Y1;7H'  
package org.rut.util.algorithm.support; UHDcheeRD  
+PO& z!F  
import org.rut.util.algorithm.SortUtil; B,Jn.YX  
"H{#ib_c_  
/** `~@}f"c`u  
* @author treeroot }J=zO8OL  
* @since 2006-2-2 }Ub "Vb  
* @version 1.0 [{J1b  
*/ &jDRRT3  
public class HeapSort implements SortUtil.Sort{ tdC kvVE  
XB%`5wwd  
/* (non-Javadoc) * =O@D2g0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gKb5W094@  
*/ =PoPp  
public void sort(int[] data) { #elaz8 5  
MaxHeap h=new MaxHeap(); \)PS&Y8n  
h.init(data); U4Pk^[,p1G  
for(int i=0;i h.remove(); $P&27  
System.arraycopy(h.queue,1,data,0,data.length); b*a}~1  
} m>b i$Y  
w2tkJcQ3  
private static class MaxHeap{ .sUL5`  
=k+i5:@]  
void init(int[] data){ H{;8i7%  
this.queue=new int[data.length+1]; a[gN+DX%L  
for(int i=0;i queue[++size]=data; |nO }YU\E  
fixUp(size); I q47^  
} wSs78c=  
} ;<`  
3lNw*M|")  
private int size=0; uMP&.Y(  
;}k_2mr~  
private int[] queue; X .S8vlb4z  
zdDJcdbGd1  
public int get() { 3K_!:[  
return queue[1]; J~G"D-l<9/  
} +z\O"zlj  
g? \pH:|79  
public void remove() { {c$%3iQq  
SortUtil.swap(queue,1,size--); B Zw#ACU  
fixDown(1); _d<\@Tkw  
} #60<$HO:Z  
file://fixdown 4>@-1nt}  
private void fixDown(int k) { KL*UU,qU  
int j; ,<-a 6  
while ((j = k << 1) <= size) { &nZ.$UK<  
if (j < size %26amp;%26amp; queue[j] j++; j8p'B-yS  
if (queue[k]>queue[j]) file://不用交换 ?r~](l   
break; k<S!|  
SortUtil.swap(queue,j,k); 0 .p $q  
k = j; ;d  >  
} kC[nY  
} HjN )~<j  
private void fixUp(int k) { 6_a.`ehtj<  
while (k > 1) { 5(OF~mX#  
int j = k >> 1; ~ .Eln+N  
if (queue[j]>queue[k]) |m7`:~ow  
break; v6?<)M%  
SortUtil.swap(queue,j,k); ,K[B/tD{j  
k = j; }~5xlg$B<<  
} K#{E87G(  
} %x7l`.) N  
8JAT2a61ur  
} Yui:=GgUrr  
_'oy C(:}  
} yc5n   
-.WVuc`  
SortUtil: `+/[0B=.  
h Tn^:%(  
package org.rut.util.algorithm; )O%lh 8fI  
Bj7\{x,?  
import org.rut.util.algorithm.support.BubbleSort; -nT+!3A8  
import org.rut.util.algorithm.support.HeapSort; 3/@'tLtN  
import org.rut.util.algorithm.support.ImprovedMergeSort; )u&_}6z  
import org.rut.util.algorithm.support.ImprovedQuickSort; I@q>ES!1H  
import org.rut.util.algorithm.support.InsertSort;  g^E n6n)  
import org.rut.util.algorithm.support.MergeSort; aa1XY&G"!  
import org.rut.util.algorithm.support.QuickSort; +e"}"]n  
import org.rut.util.algorithm.support.SelectionSort; 9Au+mIN  
import org.rut.util.algorithm.support.ShellSort; i]LK,'  
\9k{"4jX\  
/** 4%j&]PASa1  
* @author treeroot |qNrj~n@  
* @since 2006-2-2 LGCL*Qbsg  
* @version 1.0 _?_Svx2  
*/ <FK7Rz:4T  
public class SortUtil { 0+:.9*g=k  
public final static int INSERT = 1; @]#+`pZ4A  
public final static int BUBBLE = 2; x{*!"a>  
public final static int SELECTION = 3; S8vmXlD  
public final static int SHELL = 4; C12 7he  
public final static int QUICK = 5; l7J_s?!j  
public final static int IMPROVED_QUICK = 6; cCV"(Oo[H|  
public final static int MERGE = 7; "x$S%:p  
public final static int IMPROVED_MERGE = 8; |2 wff?  
public final static int HEAP = 9; xD?{Hw>QT#  
/9w}[y*E  
public static void sort(int[] data) { |H_)u  
sort(data, IMPROVED_QUICK); Pe wPl0  
} X7c*T /  
private static String[] name={ p go\(K0  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8rp-Xi W  
}; = xX^  
BK d(  
private static Sort[] impl=new Sort[]{ \ bT]?.si  
new InsertSort(), EJtU(HmW  
new BubbleSort(), Z#MODf0H@  
new SelectionSort(), 'H cDl@E  
new ShellSort(), 5!ReW39c ;  
new QuickSort(), F5<{-{Ky  
new ImprovedQuickSort(), u\.sS|$  
new MergeSort(), f|^f^Hu:{  
new ImprovedMergeSort(), }Rux<=cd|  
new HeapSort() t2Y~MyT/  
}; =;/h{ t  
usTCn3u  
public static String toString(int algorithm){ V!<#E)-?<  
return name[algorithm-1]; l*:p==  
} S8)awTA9  
.RWBn~b#I  
public static void sort(int[] data, int algorithm) { tl^[MLQa  
impl[algorithm-1].sort(data); &s<  
} [sk"2  
!yI)3;$*  
public static interface Sort { "DN`@  
public void sort(int[] data); KnFbRhu[  
} [1UqMkXtf  
v/haUPWF\  
public static void swap(int[] data, int i, int j) { YWZF*,4  
int temp = data; `WW0~Tp3  
data = data[j]; dE]"^O#Mc  
data[j] = temp; ,]mwk~HeF  
} J":9  
} (<Xdj^v  
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