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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。 :< KSf#O  
插入排序: Requ.?!fG;  
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package org.rut.util.algorithm.support; w a-_O<  
#n6FQ$l8m  
import org.rut.util.algorithm.SortUtil; m-~V+JU;x  
/** 4GmSG,]  
* @author treeroot xCmI7$uQ#  
* @since 2006-2-2 M ,.0[+  
* @version 1.0 GN~[xXJU  
*/ x mrugNRg  
public class InsertSort implements SortUtil.Sort{ I_jM-/3b  
a:(: :m  
/* (non-Javadoc) SNopAACf1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y~4SKv $  
*/ 'p|Iwtjn>  
public void sort(int[] data) { 4EaS g#  
int temp; R &1mo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O?4vC5x  
} 2Be?5+  
} YokZar2a0  
} 1DI"LIL  
G{&yzHAuae  
} T9U2j-lA?  
]iE.fQ?;J  
冒泡排序: %O4}i@Fe  
^R8U-V8:  
package org.rut.util.algorithm.support; oZ\qT0*eb  
T?p`Y| gl  
import org.rut.util.algorithm.SortUtil; eD` ,  
9wDBC~.  
/** GWA!Ab'<U  
* @author treeroot I!soV0V U]  
* @since 2006-2-2 fa*H cz  
* @version 1.0 Ma*dIwEp  
*/ *]E7}bqb  
public class BubbleSort implements SortUtil.Sort{ 4/-))F&s  
"Wn?8vR  
/* (non-Javadoc) n'&`9M['%d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |)72E[lL  
*/ bVAgul=__  
public void sort(int[] data) { j~,LoGuPh  
int temp; 8#d1}Y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ #.<F5  
if(data[j] SortUtil.swap(data,j,j-1); hB GGs  
} _WjETyh [H  
} l_j<aCY?|  
} z kX-"}$8  
} mB|mt+  
h<^:Nn  
} XnI ;7J  
h,WY2Hr  
选择排序: (Q+:N;  
;MRC~F=  
package org.rut.util.algorithm.support; V^$rH<  
S'-`\%@7  
import org.rut.util.algorithm.SortUtil; %3l;bR>  
vX0I^ 8.  
/** D8D!16_  
* @author treeroot ]htZ!; 8J  
* @since 2006-2-2 =`\,2Nb  
* @version 1.0  \#+2;L  
*/ ?lwQne8/  
public class SelectionSort implements SortUtil.Sort { /@nRL  
6nWx>R<  
/* 4{pemqS*  
* (non-Javadoc) N7I71q|  
* wq_oh*"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sc $QbOc  
*/ K%TKQ<R|  
public void sort(int[] data) { YT(1 "{:  
int temp; X,Q=n2X?3  
for (int i = 0; i < data.length; i++) { Y7t{4P  
int lowIndex = i; 0i Z9a/v  
for (int j = data.length - 1; j > i; j--) { G>ptwB81KM  
if (data[j] < data[lowIndex]) { ;Y|~!%2~  
lowIndex = j; $@qs(Xwr  
} BQ}.+T\  
} &<P^Tvqq&  
SortUtil.swap(data,i,lowIndex); GWqY$YT  
} (jE:Q2"  
} Nj-rZ%&  
C94UF7al  
} cD`O+WA2K  
O"^a.`27  
Shell排序: -J7,Nw  
7f Tg97eF  
package org.rut.util.algorithm.support; pOI`,i}.  
>eTgP._  
import org.rut.util.algorithm.SortUtil; o`8+#+@f7  
U:4Og8  
/** +$QL0|RL  
* @author treeroot aLk2#1$g  
* @since 2006-2-2 Nx (pJp{S  
* @version 1.0 (:Hbtr I  
*/ (`y|AOs  
public class ShellSort implements SortUtil.Sort{ KIBZQ.uG  
x(zZqOed  
/* (non-Javadoc) 2[&-y[1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PM<LR?PLc  
*/ -zLI!F 0  
public void sort(int[] data) { ecZOX$'5  
for(int i=data.length/2;i>2;i/=2){ d<'Yt|zt  
for(int j=0;j insertSort(data,j,i); r\ Yur  
} 0#/ 6P&6  
} UG'U D"  
insertSort(data,0,1); ^?]H$e  
} S=amjcC  
HeifFJn  
/** jsaCnm>&  
* @param data Bt7v[Ot   
* @param j X|1YGZJ  
* @param i @d^h/w  
*/ }<h. chz,  
private void insertSort(int[] data, int start, int inc) { 6Oba}`)q9  
int temp; 'I>#0VRr  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3X,{9+(F  
} Bg0cC  
} 8si^HEQ8  
} Jv.R?1;8i  
~%:p_td  
} A y[L{!)2{  
GiwA$^Hg\  
快速排序: W8h\ s {  
tRBK1h  
package org.rut.util.algorithm.support; l4reG:uYG  
AHD%6 \$  
import org.rut.util.algorithm.SortUtil; c+/C7C o  
5m?$\h  
/** U?j>28  
* @author treeroot 5w{pX1z1  
* @since 2006-2-2 V>92/w.fe  
* @version 1.0 Bic { H  
*/ swL|Ff`$  
public class QuickSort implements SortUtil.Sort{ z35Rjhj9  
g9Gy3zk=  
/* (non-Javadoc) " z'!il#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m9c T}x&j  
*/ M F: Eu  
public void sort(int[] data) { t3g! 5  
quickSort(data,0,data.length-1); *v/*_6f*  
} wT yM9wz&  
private void quickSort(int[] data,int i,int j){ {=7i}xY]T  
int pivotIndex=(i+j)/2; mJR T+SZ  
file://swap beZ| i 1:  
SortUtil.swap(data,pivotIndex,j); yLOLv6g~e  
H5 hUY'O  
int k=partition(data,i-1,j,data[j]); Pp hQa!F$  
SortUtil.swap(data,k,j); zRFM/IYC  
if((k-i)>1) quickSort(data,i,k-1); /y|r iW  
if((j-k)>1) quickSort(data,k+1,j); kk+8NwM1  
p;=(-4\V}  
} y<d#sv(s  
/** [`\Qte%UH  
* @param data lIP<`6=4  
* @param i uwA3!5  
* @param j n5>N9lc  
* @return ~U+'3.Wo  
*/ @{lnfOESl  
private int partition(int[] data, int l, int r,int pivot) { SH|$Dg  
do{ ??V["o T  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TeqsP1{?  
SortUtil.swap(data,l,r);  |?A-?-  
} e*s{/a?,  
while(l SortUtil.swap(data,l,r); ZE` {J =,  
return l; -#x\E%v.F  
} =LnAMl#9  
ht9b=1wd%s  
} 3vU (4}@  
Q2?qvNZ  
改进后的快速排序: !F)oX7"  
`Cxe`w4  
package org.rut.util.algorithm.support; ;xwQzu%M>5  
M7 !" t  
import org.rut.util.algorithm.SortUtil; =YIQ _,{u  
||aU>Wj4  
/**  U2$T}/@  
* @author treeroot Kx0dOkE  
* @since 2006-2-2 }DaYO\:yK*  
* @version 1.0 y9)",G!  
*/ 3(5Y-.aK}^  
public class ImprovedQuickSort implements SortUtil.Sort { o:<3n,T  
e.V){}{V  
private static int MAX_STACK_SIZE=4096; &)-?=M  
private static int THRESHOLD=10; 'zK*?= ^jk  
/* (non-Javadoc) mX^RSg9E}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =C|^C  
*/ )3sb 2 #  
public void sort(int[] data) { pdSyx>rJ  
int[] stack=new int[MAX_STACK_SIZE]; _wCSL.  
n} {cs  
int top=-1; X)m2{@v D  
int pivot; <lR8MqjM_  
int pivotIndex,l,r; ny=iAZM>q  
$hio (   
stack[++top]=0; kx[8#+P  
stack[++top]=data.length-1; p<4':s;*  
y1X.Mvc  
while(top>0){ ZV;yXLx|  
int j=stack[top--]; M .,|cx  
int i=stack[top--]; uk,f}Xc  
rNc>1}DDS  
pivotIndex=(i+j)/2; X6RM2  
pivot=data[pivotIndex]; JK4  @  
Sf9+TW  
SortUtil.swap(data,pivotIndex,j); J++D\x#@  
uypD`%pC  
file://partition o;fQ,r P%  
l=i-1; EX_& wep@1  
r=j; /l L*U  
do{ G1rgp>m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Lst5  
SortUtil.swap(data,l,r); o=ex{g(3  
} h.nzkp5  
while(l SortUtil.swap(data,l,r); M:x(_Lu  
SortUtil.swap(data,l,j); ?=/l@d  
M4| L  
if((l-i)>THRESHOLD){ *"@P2F&  
stack[++top]=i;  BeQJ/`  
stack[++top]=l-1; Y%3j >_\;  
} Go4l#6  
if((j-l)>THRESHOLD){ m`Z4#_s2  
stack[++top]=l+1; xQQ6D  
stack[++top]=j; lI9 3{!+>  
} ;I>`!|mT  
;\h'A(  
} 4"{q|~&=:$  
file://new InsertSort().sort(data); eX\t]{\oC  
insertSort(data); ZYG"nmNd  
} < javZJ  
/** )jg3`I@  
* @param data 3iB8QO;pp  
*/ b~r ?#2K  
private void insertSort(int[] data) { Ks4TBi&J   
int temp; ?S"xR0 *  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ws=y*7$y  
} 52oR^ |  
} E)Dik`Ccl  
} Gv`PCA@/d  
^-DK<jZ^  
} xe d$z  
=Oy,SX  
归并排序: fYwumx`J  
`+U-oqs  
package org.rut.util.algorithm.support; *fE5Z;!}  
4WLB,<b}  
import org.rut.util.algorithm.SortUtil; X]N8'Yt  
yY}`G-)g~*  
/** GE>&fG  
* @author treeroot kY|<1Ht  
* @since 2006-2-2 d< y B ~Y  
* @version 1.0 {|qz>  
*/ cng 1k  
public class MergeSort implements SortUtil.Sort{ ~U`aH~R  
/Z^+K  
/* (non-Javadoc) dme_Ivt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /gxwp:&lY  
*/ [xHK^JP 8F  
public void sort(int[] data) { HR4^+x  
int[] temp=new int[data.length]; \5Hfe;ny-~  
mergeSort(data,temp,0,data.length-1); VQ +Xh  
} (|W@p\Q  
;#AV~Y- s  
private void mergeSort(int[] data,int[] temp,int l,int r){ <MoWS9s!yb  
int mid=(l+r)/2; lE4.O  
if(l==r) return ; ^;L;/I[-  
mergeSort(data,temp,l,mid); ^X^4R1V)  
mergeSort(data,temp,mid+1,r); ^hU7QxW  
for(int i=l;i<=r;i++){ Uc.K6%iI  
temp=data; K?) &8S  
} u\50,N9Wp{  
int i1=l; l2xM.vR  
int i2=mid+1; tv5SQ+AI3  
for(int cur=l;cur<=r;cur++){ z`lDD  
if(i1==mid+1) }.x?$C+\"  
data[cur]=temp[i2++]; SwLul4V  
else if(i2>r) {@k5e) Q  
data[cur]=temp[i1++]; O.}{s;  
else if(temp[i1] data[cur]=temp[i1++]; H.*XoktC]  
else 5MT$n4zKu  
data[cur]=temp[i2++]; Po% V%~  
} S_WYU&8  
} VGkwrS;+I  
JW (.,Ztm  
} P/4]x@{ih  
IF<pT)  
改进后的归并排序: 9%pq+?u9  
&0~E+ 9b  
package org.rut.util.algorithm.support; Jc/*w  
YuFJJAJ  
import org.rut.util.algorithm.SortUtil;  LGV"WE  
.hXxh)F  
/** lo Oh }y+  
* @author treeroot uD_iyK0,  
* @since 2006-2-2 [?^,,.Dd  
* @version 1.0 hIE$ut +  
*/ > T=($:n  
public class ImprovedMergeSort implements SortUtil.Sort { @h$cHZ  
JdF;*`_7*  
private static final int THRESHOLD = 10; 8i;EpAwB  
z1K@AaRx  
/* h,"K+$  
* (non-Javadoc) CNwIM6t  
* ( $A0b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E0[ec6^qwY  
*/ @lRTp  
public void sort(int[] data) { /I(IT=kp  
int[] temp=new int[data.length]; LB1LQ 0M  
mergeSort(data,temp,0,data.length-1); PRg^E4  
} ]c4?-Vq%u  
3 - Nwg9 U  
private void mergeSort(int[] data, int[] temp, int l, int r) { ihS;q6ln  
int i, j, k; V.?N29CA|  
int mid = (l + r) / 2; ?RNm8,M  
if (l == r)  rl"$6{Z}  
return; t"4RGO)jh  
if ((mid - l) >= THRESHOLD) d e)7_pCF|  
mergeSort(data, temp, l, mid); 46OYOa  
else Q8OA{EUtq  
insertSort(data, l, mid - l + 1); PT4Wox9U  
if ((r - mid) > THRESHOLD) E{'{fo!#)  
mergeSort(data, temp, mid + 1, r); Y">m g=B  
else 5n{J}0C  
insertSort(data, mid + 1, r - mid); $R6iG\V5  
Q$u&/g3NvL  
for (i = l; i <= mid; i++) { 1$mxMXNsJ  
temp = data; $=3&qg"!  
} <?yf<G'$  
for (j = 1; j <= r - mid; j++) { B /q/6Pp  
temp[r - j + 1] = data[j + mid]; wiHGTaR  
} =A[:]),v  
int a = temp[l]; q=Xda0c  
int b = temp[r]; ?'SHt9b3|  
for (i = l, j = r, k = l; k <= r; k++) { b/;!yOF  
if (a < b) { uzG{jc^  
data[k] = temp[i++]; max 5s$@  
a = temp; k%2woHSu&  
} else {  IDCuS  
data[k] = temp[j--]; *WTmS2?'h  
b = temp[j]; v|~&I%S7  
} bT93R8yp  
} p=13tQS<  
} y-C=_v_X  
gbf2ty  
/** 3X|7 R  
* @param data (S<Z@y+d  
* @param l 10.u  
* @param i itotn!Wb`  
*/ {9mXJu$cc  
private void insertSort(int[] data, int start, int len) { "&9L  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ={'*C7K)oK  
} Lvco9 Ak  
} 0 $Ygt0d  
} *aem5 E`c  
} v$n J$M&k  
oY NIJXln  
堆排序: X1wlOE  
/i !3Fr"  
package org.rut.util.algorithm.support; J)kH$!csi  
#k}x} rn<'  
import org.rut.util.algorithm.SortUtil; $nf5bo/;  
8VWkUsOoI  
/** UYw_k\  
* @author treeroot l(Y U9dp  
* @since 2006-2-2 nO;*Peob  
* @version 1.0 C4,;l^?=%  
*/ . W7Z pV  
public class HeapSort implements SortUtil.Sort{ lhk=yVG3  
*- S/{ .&  
/* (non-Javadoc) \Ei(HmEU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sh@en\m=#S  
*/ &7 0o4~Fr  
public void sort(int[] data) { 3AQu\4+A  
MaxHeap h=new MaxHeap(); j Z6]G{  
h.init(data); $T#yxx  
for(int i=0;i h.remove(); NP+*L|-;  
System.arraycopy(h.queue,1,data,0,data.length); 7RpAsLH=  
} s3Wjg  
:6T 8\W  
private static class MaxHeap{ arQEi  
(>)f#t[9J  
void init(int[] data){ bdxmJ9a:R  
this.queue=new int[data.length+1]; fR^aFT  
for(int i=0;i queue[++size]=data; <T^:`p/]4  
fixUp(size); P}2waJe  
} 2a,l;o$2&  
} $~G=Hcl9  
_T^+BUw  
private int size=0; }#bX{?f  
+`(,1L1  
private int[] queue; { K,KIj"  
Vi:<W0:  
public int get() { 6xC$R q  
return queue[1]; zZh\e,*  
} OS{j5o  
USrBi[_ci\  
public void remove() { }i\U,mH0_&  
SortUtil.swap(queue,1,size--); 4UV6'X)V  
fixDown(1); 7[/1uI9U8K  
} m Bc2x8g)  
file://fixdown 9FKowF_8  
private void fixDown(int k) { +<TnE+>j  
int j; Dpf"H  
while ((j = k << 1) <= size) { nyRQ/.3  
if (j < size %26amp;%26amp; queue[j] j++; Osj/={7g  
if (queue[k]>queue[j]) file://不用交换 i| /EA7  
break; h,Nq:"}  
SortUtil.swap(queue,j,k); vi8)U]6  
k = j; gQ8FjL6?  
} YB?5s`vr9d  
} F-&=N {+  
private void fixUp(int k) { P)k!#*  
while (k > 1) { fEgwQ-]  
int j = k >> 1; 4],*y`& g  
if (queue[j]>queue[k]) um}%<Cy[  
break; Yg<4}l."  
SortUtil.swap(queue,j,k); &40# _>W7  
k = j; 65g"$:0  
} x<lY&KQ0  
} 1{0 L~  
9`8D Ga  
} W_\~CntyZ  
NJqjW  
} Q.zE}ZS  
Jp#Onl+d6  
SortUtil: f*HEw  
W81 dLeTZg  
package org.rut.util.algorithm; s ~ Xa=_+D  
k&dLg5O  
import org.rut.util.algorithm.support.BubbleSort; ;+6TZqklQ  
import org.rut.util.algorithm.support.HeapSort; ROWrkJI>i  
import org.rut.util.algorithm.support.ImprovedMergeSort; L';b908r2  
import org.rut.util.algorithm.support.ImprovedQuickSort; O_bgrXg6x  
import org.rut.util.algorithm.support.InsertSort; ab/^z0GT  
import org.rut.util.algorithm.support.MergeSort; J4VyP["m  
import org.rut.util.algorithm.support.QuickSort; )h>H}wDs  
import org.rut.util.algorithm.support.SelectionSort; $(A LxC  
import org.rut.util.algorithm.support.ShellSort; Lo-\;%y  
wSGW_{;-  
/** S9@2-Oc  
* @author treeroot ?VCM@{9  
* @since 2006-2-2 = 3("gScUj  
* @version 1.0 \fjr`t]  
*/ R&P}\cf8T  
public class SortUtil { VQe@H8>3  
public final static int INSERT = 1; 8F(Vd99I  
public final static int BUBBLE = 2; DM[gjfMXu  
public final static int SELECTION = 3; Q(0eq_X|6  
public final static int SHELL = 4; l NhX)D^t  
public final static int QUICK = 5; %<?U`o@*  
public final static int IMPROVED_QUICK = 6; G~$[(Fhk  
public final static int MERGE = 7; ,2*x4Gycb  
public final static int IMPROVED_MERGE = 8; 1O@y >cV  
public final static int HEAP = 9; miv)R  
wB0K e  
public static void sort(int[] data) { *v6 j7<H  
sort(data, IMPROVED_QUICK); y%NZ(Y,v  
} 9@{=2 k  
private static String[] name={ @9ndr$t  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H7&bUt/  
}; O\=c&n~`  
! {c"C  
private static Sort[] impl=new Sort[]{ _a[)hu8q.  
new InsertSort(), sY*iRq  
new BubbleSort(), .Km6 (U  
new SelectionSort(), \Ng|bWR>LQ  
new ShellSort(), *B ]5K{N  
new QuickSort(), XI8rU)q  
new ImprovedQuickSort(), }p$@.+  
new MergeSort(), 1 ^q~NYTK  
new ImprovedMergeSort(), #\LsM ~,  
new HeapSort() Sru}0M#M  
}; ~SD8#;v2  
|',$5!:0O  
public static String toString(int algorithm){ +\@}IKWl-?  
return name[algorithm-1]; 5L%\rH&N  
} PY{])z3N  
.*acw  
public static void sort(int[] data, int algorithm) { )xPfz  
impl[algorithm-1].sort(data); rM5{R}+;  
} :3$$PdZ  
fBZAO  
public static interface Sort { NL7CeHs5  
public void sort(int[] data); 8IrA {UU  
} +PfXc?VU  
hantGw |  
public static void swap(int[] data, int i, int j) { //W7$DYEG  
int temp = data; $CgR~D2G  
data = data[j]; kEr; p{5  
data[j] = temp; }}4u>1,~  
} V\4zK$]  
} vD@ =V#T  
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