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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。 c_ qcb7<~.  
插入排序: 9ra HSzK@d  
;# R3k  
package org.rut.util.algorithm.support; nIV.9#~&  
;w+:8<mM}a  
import org.rut.util.algorithm.SortUtil; W>}Qer4  
/** #aitESbT  
* @author treeroot y$j1?7  
* @since 2006-2-2 QIij>!c4  
* @version 1.0 BcZEa^^~os  
*/ 42Aje  
public class InsertSort implements SortUtil.Sort{ TV1e bH7q  
6K4`;  
/* (non-Javadoc) ?jNF6z*M6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w69>tC  
*/ fuNl4BU  
public void sort(int[] data) { P[rAJJN/E  
int temp; 2I]]WBW#:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rV8(ia  
} |'U,/  
} 00`bL  
} kZU"Xn  
rPiiC/T.`  
} YW8K $W  
W>p\O9BG  
冒泡排序:  /,1SE(  
hi;WFyJTu  
package org.rut.util.algorithm.support; <CNE>@-f  
DL'd&;6  
import org.rut.util.algorithm.SortUtil; |`_ <@b  
i(M(OR/4  
/** H_% d3 RI  
* @author treeroot BGB,Gb  
* @since 2006-2-2 xHEVR!&c4  
* @version 1.0 ~a'nHy1  
*/ lq>*x=<  
public class BubbleSort implements SortUtil.Sort{ e Z@Gu  
9nng}em>.  
/* (non-Javadoc) @D fkGm[%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vQ:x% =]  
*/ "C:rTIH  
public void sort(int[] data) { $"Y3mD}?L  
int temp; 2UU 2Vm_6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +Fk4{p  
if(data[j] SortUtil.swap(data,j,j-1); b:fxkQm  
} n!UMU^  
} 8`:M\*  
} I$aXnd6)  
} yD"]{  
9M1a*frxZ  
} ((-aC`  
* T JBPM,  
选择排序: H<V+d^qX\w  
}x:\69$  
package org.rut.util.algorithm.support; 51&|t#8h  
vn|TiZ  
import org.rut.util.algorithm.SortUtil; dzgs%qtK  
PzIy">plm  
/** R&NpdW N  
* @author treeroot  Y[f,ia  
* @since 2006-2-2 b%3Q$wIJ6  
* @version 1.0 \# 7@a74  
*/ E/:+@'(k  
public class SelectionSort implements SortUtil.Sort { ?D1x;i9<  
+DicP"~*  
/* gb]h OB7g  
* (non-Javadoc) CHPL>'NJzc  
* SW3wMPy&s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i Bi7|  
*/ ow-+>Y[qZ  
public void sort(int[] data) { Ezi' 2Sc  
int temp; P-[fHCg~  
for (int i = 0; i < data.length; i++) { (YAI,Xnw  
int lowIndex = i; d>YmKTk"  
for (int j = data.length - 1; j > i; j--) { G{ F6  
if (data[j] < data[lowIndex]) { 3sS=?q  
lowIndex = j; ?$<SCN =  
} H!Wis3S3G  
} $TR=3[j  
SortUtil.swap(data,i,lowIndex); uPFRh~ (b  
}  G5!|y#T  
} B`LD7]ew  
53bM+  
} CI IY|DI`l  
Lqg] Fd  
Shell排序: 63.( j P1;  
5_v5  
package org.rut.util.algorithm.support; 3b<: :t  
O-i4_YdVt  
import org.rut.util.algorithm.SortUtil; ?x:m;z/  
_i-\mR_~  
/** !)NYW4"  
* @author treeroot Dz,uS nnm  
* @since 2006-2-2 \^yXc*C  
* @version 1.0 w-J"zC  
*/ <H<!ht%q3  
public class ShellSort implements SortUtil.Sort{ \.5F](:  
.H ,pO#{;  
/* (non-Javadoc) ex.+'m<g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &8Zeq3~  
*/ T0g0jr{  
public void sort(int[] data) { j0AwL7  
for(int i=data.length/2;i>2;i/=2){ }|AX_=a  
for(int j=0;j insertSort(data,j,i); >+L7k^[,0  
} |Es0[cU  
} Ny[Q T*nV  
insertSort(data,0,1); (viWY  
} bi+9R-=&  
KCE=|*6::|  
/** 5n:nZ_D  
* @param data g&Z"_7L~  
* @param j 9`&?hi49nK  
* @param i S3ErH,XB.  
*/ 0%/,>IR>r  
private void insertSort(int[] data, int start, int inc) { |4=ihB9+  
int temp; gRHtgR)T3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n4Vwao/9x  
}  64SW  
} H4W1\u  
} [U swf3  
S[Vtq^lU  
} d60c$?"]a(  
Qr<AV:  
快速排序: ^,Lt Ewd~Y  
I<sfN'FpT  
package org.rut.util.algorithm.support; TFo}\B7  
L,#^&9bHa#  
import org.rut.util.algorithm.SortUtil; en%J!<&W{K  
># INEO  
/** 2bkJ /u`i  
* @author treeroot ;r3}g"D@  
* @since 2006-2-2 tp@*=*^I  
* @version 1.0 lbd(j{h>4  
*/ F9%,MSt  
public class QuickSort implements SortUtil.Sort{ >$Fp}?xX  
UnP|]]o:I  
/* (non-Javadoc) uN8/Q2   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /\d(c/,4  
*/ rjXnDh]MC  
public void sort(int[] data) { AH|Y<\  
quickSort(data,0,data.length-1); f`,-b  
} 5lGQ#r  
private void quickSort(int[] data,int i,int j){ 7"#f!.E  
int pivotIndex=(i+j)/2; a%v>eXc  
file://swap #vtN+E  
SortUtil.swap(data,pivotIndex,j); w#sq'vo4%  
V n^)  
int k=partition(data,i-1,j,data[j]); QPX`l0V  
SortUtil.swap(data,k,j); Z4#v~!  
if((k-i)>1) quickSort(data,i,k-1); S.1( 3j*  
if((j-k)>1) quickSort(data,k+1,j); 7H4L-J3  
P:qz2Hw  
} nX)f'[ 7  
/** g@Ld"5$^2  
* @param data &Bm&i.r  
* @param i bf1)M>g,O  
* @param j 7 I@";d8~  
* @return qIz}$%!A  
*/ mf$Sa58  
private int partition(int[] data, int l, int r,int pivot) { g &*mozs  
do{ f\ 'T_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); i@XB&;*c\  
SortUtil.swap(data,l,r); &~'S)Nun  
} i*'Z3Z)  
while(l SortUtil.swap(data,l,r); ;?zF6zvQ  
return l; eSn$k:\W  
} ?,>5[Ha^?  
8TW5(fl  
} "oe!M'aj`1  
@7%.7LK  
改进后的快速排序: bJwc1AJgH  
`0rRKlbj4  
package org.rut.util.algorithm.support; (n,N8k;  
AX;c}0g  
import org.rut.util.algorithm.SortUtil; '$?du~L-  
'AWp6L@  
/** eIJ[0c b}  
* @author treeroot |kc@L`7s  
* @since 2006-2-2 Wxn#Rk#>  
* @version 1.0 6A?8tm/0  
*/ $it@>L8  
public class ImprovedQuickSort implements SortUtil.Sort { !9D1 Fa  
p31oL{D  
private static int MAX_STACK_SIZE=4096; >azEed<B  
private static int THRESHOLD=10; 6} #"qqnx  
/* (non-Javadoc) 8ljuc5,J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uFo/s&6K  
*/ lm*g Gy1i  
public void sort(int[] data) { 0<Q*7aY  
int[] stack=new int[MAX_STACK_SIZE]; z&F5mp@  
7h`^N5H.q  
int top=-1; H99xZxHZ{  
int pivot; nA+F  
int pivotIndex,l,r; Z9VR]cf?  
[~)x<=H8{  
stack[++top]=0; #ua^{OrC/  
stack[++top]=data.length-1; GyK(Vb"h6  
1O0X-C,wo$  
while(top>0){ 8#l+{`$z  
int j=stack[top--]; /?P!.!W&  
int i=stack[top--]; @vt$MiOi  
~j"3}wXc5  
pivotIndex=(i+j)/2; 'fn$'CeM(  
pivot=data[pivotIndex]; WqQU@sA  
$UC{"0  
SortUtil.swap(data,pivotIndex,j); /NU103F yt  
ke]Yfwk  
file://partition G?ig1PB"#  
l=i-1; wDKELQ(y H  
r=j; >vAN(3Idu  
do{ 'yr{^Pek  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~b6GrY"vB  
SortUtil.swap(data,l,r); ? |VysJ  
} S/7l/DFb  
while(l SortUtil.swap(data,l,r); pV=@sz,G  
SortUtil.swap(data,l,j); 0>FE%  
RX>2~^  
if((l-i)>THRESHOLD){ &a6,ln:P  
stack[++top]=i; !^?qU;|  
stack[++top]=l-1; RG1\=J$:E  
} X!c?CL  
if((j-l)>THRESHOLD){ yb?|Eww_o  
stack[++top]=l+1; l'uOORI  
stack[++top]=j; $8g42LR'  
} `tVy_/3(9  
UP8{5fx'  
} 9.s,:?5e  
file://new InsertSort().sort(data); l9J*um-  
insertSort(data); #U"1 9@|}  
} f3#X0.':  
/** hZU 1O  
* @param data bo>E"<  
*/ 8R?I`M_b  
private void insertSort(int[] data) { 8UM0vNk  
int temp; GHG,!C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6|#g+&[  
} ) EXJ   
} ]0-<>  
} 4Jykos2  
QNg\4%  
}  KGT3|)QN  
x<F$aXOS  
归并排序: iRve)   
K<RqBecB  
package org.rut.util.algorithm.support; x0<^<D&Q  
0T9. M(  
import org.rut.util.algorithm.SortUtil; +|&0fGv;d9  
6bL~6-h%)  
/** 1-o V-K  
* @author treeroot W.[BPR  
* @since 2006-2-2 ArXl=s';s4  
* @version 1.0 !_x*m@/  
*/ -_>.f(1  
public class MergeSort implements SortUtil.Sort{ &<0ZUI |S3  
U=m=1FYaG  
/* (non-Javadoc) m&/=&S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i}lRIXjdV  
*/ >];"N{ A  
public void sort(int[] data) { S>t>6&A  
int[] temp=new int[data.length]; kEP<[K  
mergeSort(data,temp,0,data.length-1); niWx^gKb$  
} Pm?B 9S  
T*+A.G@L"  
private void mergeSort(int[] data,int[] temp,int l,int r){ A3q*$.[  
int mid=(l+r)/2; ch })ivFP[  
if(l==r) return ; AC4 l<:Yh  
mergeSort(data,temp,l,mid); 28UVDG1?  
mergeSort(data,temp,mid+1,r); A*i_|]Q  
for(int i=l;i<=r;i++){ (U9a@ 1  
temp=data; s|2}2<+  
} 1exfCm  
int i1=l; 0>@[o8  
int i2=mid+1; $ $4W}Ug3U  
for(int cur=l;cur<=r;cur++){ c-*2dV[@  
if(i1==mid+1) 6+PGwCS  
data[cur]=temp[i2++]; W[|[;{  
else if(i2>r) <L&eh&4c  
data[cur]=temp[i1++]; F,pCR7o>  
else if(temp[i1] data[cur]=temp[i1++]; ; k}H(QI  
else ~L'nz quF  
data[cur]=temp[i2++]; c<jB6|.=2  
} /gw Cwyo  
} i@,]Z~]  
*U_oao  
} E474l  
( 3;`bvYH"  
改进后的归并排序: >S.91!x  
=x H~ww (D  
package org.rut.util.algorithm.support; 6N3@!xtpi  
%),!2_ x~  
import org.rut.util.algorithm.SortUtil; *s\sa+2al  
/80YZ   
/** o;QZe&  
* @author treeroot SdI1}&  
* @since 2006-2-2 P4 6,o  
* @version 1.0 ~ 5"J(  
*/ j)L1H* S%  
public class ImprovedMergeSort implements SortUtil.Sort { /s`;9)G]9  
%g w{[ /[A  
private static final int THRESHOLD = 10; 6?o>{e7n^  
6mHhC?  
/* a D|Yo  
* (non-Javadoc) }\Z5{OA  
* aYVDp{_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eqhAus?)  
*/ p(?3 V  
public void sort(int[] data) { x)R0F\_  
int[] temp=new int[data.length]; JIV8q HC  
mergeSort(data,temp,0,data.length-1); .Dx2 ;lj  
} c[5@ \j\  
oEIqA  
private void mergeSort(int[] data, int[] temp, int l, int r) { f3 &/r  
int i, j, k; |!Ists  
int mid = (l + r) / 2; A.U'Q|  
if (l == r) @vAFfYU9<.  
return; bn-=fb(  
if ((mid - l) >= THRESHOLD) sTOFw;v%  
mergeSort(data, temp, l, mid); hdj%|~Fj  
else MaErx\  
insertSort(data, l, mid - l + 1); H,|YLKg-|  
if ((r - mid) > THRESHOLD) ) ,Npv3(  
mergeSort(data, temp, mid + 1, r); <V S2]13  
else SqqDV)Uih1  
insertSort(data, mid + 1, r - mid); J]\^QMX  
6~@5X}^<0  
for (i = l; i <= mid; i++) { usH%dzKK  
temp = data; 5"gL.Ez  
} rzT{-DZB[4  
for (j = 1; j <= r - mid; j++) { kM`7EPk  
temp[r - j + 1] = data[j + mid]; CQ18%w6  
} Ja [#[BJ?  
int a = temp[l]; X6kaL3L}  
int b = temp[r]; {US>)I  
for (i = l, j = r, k = l; k <= r; k++) { !*bdG(pK  
if (a < b) { oHsP?%U  
data[k] = temp[i++]; OjATSmZ@@  
a = temp; o?\Gm  
} else {  XhA4:t  
data[k] = temp[j--]; B5`;MQJ  
b = temp[j]; o9+Q{|r  
} WZK :.y  
} }`]]b+_b>@  
} #Fzb8Yo  
1eiw3WU;  
/** - 0DZ::  
* @param data FG# nap{  
* @param l hS_.l}0yf  
* @param i iT$d;5_pU  
*/ 8&?p  
private void insertSort(int[] data, int start, int len) { NWnWk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U8[Qw}T P  
} G?ZC 9w]rA  
} mATH*[Y  
} 5rN7':(H!%  
} Gh+f1)\FA"  
nx$bM(.  
堆排序: ?Cc :)  
3):?ZCw7y  
package org.rut.util.algorithm.support; +7Rt{C,  
iAHZ0Du  
import org.rut.util.algorithm.SortUtil; 2@ *<9-9  
6sy,A~e  
/** .hne)K%={y  
* @author treeroot hgwn> p:S#  
* @since 2006-2-2 oG\>--  
* @version 1.0 K0 QH?F  
*/ |*1xrM:v~  
public class HeapSort implements SortUtil.Sort{ r\RFDj  
hXTYTbTX  
/* (non-Javadoc) Q@Dkl F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Y8qWJU  
*/ ?FDJqJM  
public void sort(int[] data) { 8})|^%@n  
MaxHeap h=new MaxHeap(); tWX7dspx/  
h.init(data); i'iO H|s  
for(int i=0;i h.remove(); s9 &)Fv-#V  
System.arraycopy(h.queue,1,data,0,data.length); y9ip[Xn-$:  
} =h7[E./U1  
|?yE^$a  
private static class MaxHeap{ xD^wTtT  
)@,N7Y1h  
void init(int[] data){ L6x B`E9  
this.queue=new int[data.length+1]; AoU_;B\b%  
for(int i=0;i queue[++size]=data; q#m!/wod  
fixUp(size); :mn(0 R~  
} iLQSa7  
} )*W=GY*  
RUqO!s~#rY  
private int size=0; KG-y)qXu  
ph+M3q(z  
private int[] queue;  h,~tXj  
$$\V 2%v  
public int get() { ;Rs.rl>;t/  
return queue[1]; ?61L|vr  
} ka8$dfC  
ajGcKyj8i  
public void remove() { FvAbh]/4  
SortUtil.swap(queue,1,size--); s!aO*\[<h  
fixDown(1); 3l$E8?[Zwi  
} C$t.C rxx  
file://fixdown uct=i1+ fE  
private void fixDown(int k) { eX@ v7i,}  
int j; "&Gw1.p  
while ((j = k << 1) <= size) { A`IHP{aB  
if (j < size %26amp;%26amp; queue[j] j++; \*Ts)EW  
if (queue[k]>queue[j]) file://不用交换 3jXR"@Z-  
break; J ZA*{n2  
SortUtil.swap(queue,j,k); R qn WtE  
k = j; @]E]W#xAn  
} W w^7^q&  
} aU4R+.M7@  
private void fixUp(int k) { <c(&T<$  
while (k > 1) { _TrZ'iL}T  
int j = k >> 1; N6WPTUQ1mF  
if (queue[j]>queue[k]) rykj2/O  
break; "% SX@  
SortUtil.swap(queue,j,k);  w"BIv9N  
k = j; t@6w$5:}  
} *.:!Ax  
} 1y 1_6TZ+  
Q7L)f71i  
} */4tJ G1U  
@K7ebYr?  
} <o ~t$TH  
+;YE)~R?  
SortUtil: O/(3 87=U  
iQu^|,tHEM  
package org.rut.util.algorithm; s:3aRQ%  
)dqR<)  
import org.rut.util.algorithm.support.BubbleSort; 7:z>+AM[r  
import org.rut.util.algorithm.support.HeapSort; p?}f|mQS)  
import org.rut.util.algorithm.support.ImprovedMergeSort; '^e0Ud,  
import org.rut.util.algorithm.support.ImprovedQuickSort; hI*`>9l  
import org.rut.util.algorithm.support.InsertSort; |y klT  
import org.rut.util.algorithm.support.MergeSort; 'y< t/qo  
import org.rut.util.algorithm.support.QuickSort; bB y'v/  
import org.rut.util.algorithm.support.SelectionSort; hH#lTye  
import org.rut.util.algorithm.support.ShellSort; pa> p%  
axOi 5  
/** $y8mK|3.3u  
* @author treeroot &ycjSBK  
* @since 2006-2-2 0T(O'v}.  
* @version 1.0 c!.=%QY  
*/ 0h^uOA; c  
public class SortUtil { vf6`s\6  
public final static int INSERT = 1; 5QKRI)XpZ  
public final static int BUBBLE = 2; mlD%d!.  
public final static int SELECTION = 3; 15o9CaQw4"  
public final static int SHELL = 4; :DDO=  
public final static int QUICK = 5; =n)JJS94  
public final static int IMPROVED_QUICK = 6; EK^JLvyT  
public final static int MERGE = 7; s;anP0-O  
public final static int IMPROVED_MERGE = 8; O5u cI$s  
public final static int HEAP = 9; u$apH{  
%B[YtWqm`/  
public static void sort(int[] data) { :wFb5"  
sort(data, IMPROVED_QUICK); fdN45in=>  
} ?){0-A4  
private static String[] name={ fDL3:%D  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Yd[U  
}; 3(aRs?/ O  
MgHOj   
private static Sort[] impl=new Sort[]{ mluW=fE  
new InsertSort(), b*cW<vX}~  
new BubbleSort(), :b.3CL\.6  
new SelectionSort(), a:=q8Qy  
new ShellSort(), $[)6H7!U)  
new QuickSort(), ThjUiuWe  
new ImprovedQuickSort(), @mvIt  
new MergeSort(), >Dk1axZ!>/  
new ImprovedMergeSort(), fKFnCng  
new HeapSort() ixIh T  
}; rH[5~U  
dz{#"No0  
public static String toString(int algorithm){ Cq-hPa}2  
return name[algorithm-1]; ~o:rM/!Ba  
} =s`XZkh  
 AqKHjCI  
public static void sort(int[] data, int algorithm) { | -JI`!7  
impl[algorithm-1].sort(data); s[Y)d>~\$=  
} mYntU^4f  
wYZy e^7  
public static interface Sort { W/b"a?wE{  
public void sort(int[] data); s.f`.o  
} d&/^34gn  
d^ 2u}^kG  
public static void swap(int[] data, int i, int j) { s>LA3kT  
int temp = data; f1)HHUB  
data = data[j]; W/#KX}4  
data[j] = temp; Kl4isGcr]  
} 7h(HG?2Y  
} ) ~ l\  
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