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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。 p#-Z4-`  
插入排序: IYv`IS"  
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package org.rut.util.algorithm.support; #`^}PuQ  
(&r. w  
import org.rut.util.algorithm.SortUtil; ?d*z8w  
/** @@f"%2ZR[  
* @author treeroot GC-5X`Sq  
* @since 2006-2-2 .e#w)K  
* @version 1.0 x[p|G5  
*/ KR} ?H#%  
public class InsertSort implements SortUtil.Sort{ *VCXihgo  
y RqL9t  
/* (non-Javadoc) RbB.q p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _;"il%l=1  
*/ #mxPw  
public void sort(int[] data) { PI {bmZ  
int temp; }{Pp]*I<A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ./Xz}<($8  
} 1C+13LE$U  
} "Bkfoi  
} %UrueMEO  
v&\Q8!r_  
} w7L{_aom  
b! t0w{^w  
冒泡排序: kdiM5l70  
Z-%\ <zT  
package org.rut.util.algorithm.support; ic:zsuEm  
G[PtkPSJ  
import org.rut.util.algorithm.SortUtil; lf|FWqqV  
s S+MqBh&I  
/** 'ms-*c&  
* @author treeroot }rUN_.n4z  
* @since 2006-2-2 q1x`Bj   
* @version 1.0 `7E;VL^Y1  
*/ T=DbBy0-  
public class BubbleSort implements SortUtil.Sort{ ^dWa;m]l  
jVe1b1rt~3  
/* (non-Javadoc) bL`TySX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LE Nq_@$  
*/ bIDj[-CDG  
public void sort(int[] data) { P}}* Q7P  
int temp; l:~/<`o  
for(int i=0;i for(int j=data.length-1;j>i;j--){ fUWG*o9  
if(data[j] SortUtil.swap(data,j,j-1); !/b>sN}  
} n` _{9R  
} ,&A7iO  
} dl)Y'DI  
} n&4N[Qlv,  
CZwXTHe  
}  tU5zF.%  
'ZF{R3Xu  
选择排序: 4i;{!sT  
QE+g j8  
package org.rut.util.algorithm.support; 1ba~SHi  
b~P`qj[  
import org.rut.util.algorithm.SortUtil; { 'eC`04E  
x;.Jw 6g  
/** 9.M4o[  
* @author treeroot t.y2ff<[U  
* @since 2006-2-2 H7Rx>h_  
* @version 1.0 ?=msH=N<l  
*/ eb{nWP  
public class SelectionSort implements SortUtil.Sort { DCO\c9  
`g?Negt\v  
/* oSKXt}sh  
* (non-Javadoc) x j)F55e?  
* }-{H  Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8NJqV+jn)t  
*/ oCv.Ln1;Z  
public void sort(int[] data) { {w O|)|  
int temp; Wis~$"  
for (int i = 0; i < data.length; i++) { 3pROf#M  
int lowIndex = i; n38p!oS  
for (int j = data.length - 1; j > i; j--) { %IA\pSE  
if (data[j] < data[lowIndex]) { wU36sCo  
lowIndex = j; ~vhE|f  
} p`dU2gV  
} 2a)xTA#  
SortUtil.swap(data,i,lowIndex); s\(k<Ks  
} |^I0dR/w:  
}  _"yh.N&  
pU}(@oy  
} :S83vE81WK  
Ta0|+IYk<  
Shell排序: ?!:ha;n  
iuW[`ou X  
package org.rut.util.algorithm.support; tY<4%~%X  
7nTeP(M%  
import org.rut.util.algorithm.SortUtil; B]wk+8SMY.  
H2\;%K 2  
/** .VJMz4$]O  
* @author treeroot CsR$c,8X.  
* @since 2006-2-2 Kk0g0C:"EO  
* @version 1.0 &{hL&BLr  
*/ 49c:V,  
public class ShellSort implements SortUtil.Sort{ {4}yKjW%z  
n,(sBOQ  
/* (non-Javadoc) X7 MM2V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bo>*fNqAIy  
*/ 4B1v4g8}  
public void sort(int[] data) { d L 1tl  
for(int i=data.length/2;i>2;i/=2){ 4[r0G+  
for(int j=0;j insertSort(data,j,i); uBKgcpvTs  
} 5lmHotj#  
} nNV'O(x}  
insertSort(data,0,1); dq6m>;`  
} Fnv;^}\z  
}eU*( }<^  
/** ~ 'cmSiz-  
* @param data xh,qNnGGi  
* @param j Lx1FpHo  
* @param i , kGc]{'W  
*/ `2WFk8) F  
private void insertSort(int[] data, int start, int inc) { )[6U^j4  
int temp; ZY={8T@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qJs<#MQ2  
} wu!59pL  
} a2O75 kWnm  
} zT.7  
X/!o\yyT  
} 6 7.+ .2  
wE>\7a*P%  
快速排序: iL&fgF"'  
6r0krbN  
package org.rut.util.algorithm.support; %D34/=(X  
KeB"D!={;  
import org.rut.util.algorithm.SortUtil; WRbj01v  
BLdvyVFx  
/** ItVWO:x&v  
* @author treeroot }O5i/#.lR  
* @since 2006-2-2 PI)+Jr%L  
* @version 1.0 (O?.)jEW(.  
*/ d#Y^>"|$.  
public class QuickSort implements SortUtil.Sort{ faX#**r  
X1|njJGO1  
/* (non-Javadoc) Jb@V}Ul$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qPK*%Q<;  
*/ @Zu5VpJ  
public void sort(int[] data) { ,j{,h_Op  
quickSort(data,0,data.length-1); ) 1f~ dR88  
} Q#X8u-~  
private void quickSort(int[] data,int i,int j){ K~{$oD7!  
int pivotIndex=(i+j)/2; AaOu L,l  
file://swap `/XY>T}-  
SortUtil.swap(data,pivotIndex,j); :yr+vcD?  
e0zq1XcZ  
int k=partition(data,i-1,j,data[j]); wLH>:yKUU  
SortUtil.swap(data,k,j); bKY7/w<dP  
if((k-i)>1) quickSort(data,i,k-1); gIa+5\qYY  
if((j-k)>1) quickSort(data,k+1,j); }Yzco52  
)JLdO*H  
} x%m%_2%Z  
/** Egp/f|y  
* @param data Y|f[bw  
* @param i mt{nm[D!Xp  
* @param j Qf+\;@  
* @return y/cvQY0pU  
*/ c /HHy,  
private int partition(int[] data, int l, int r,int pivot) { ?k&Vy  
do{ L:j<c5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )e+>w=t  
SortUtil.swap(data,l,r); ^z IW+:  
} R6.hA_ih  
while(l SortUtil.swap(data,l,r); ci.+pF  
return l; HGs $*  
} 2B[X,rL.pX  
6+|do+0Icg  
} ColV8oVnU  
TH&U j1  
改进后的快速排序: _Xc8Yg }`  
Y-_`23x`  
package org.rut.util.algorithm.support; R6Km\N  
m@2QnA[ 4  
import org.rut.util.algorithm.SortUtil; OmpND{w  
RuA*YV  
/** kR-SE5`Jk  
* @author treeroot O7m(o:t x3  
* @since 2006-2-2 L^2%1GfE{  
* @version 1.0 VU(v3^1"  
*/ fI}to&qk  
public class ImprovedQuickSort implements SortUtil.Sort { -`kW&I0  
'Ym9;~(@R  
private static int MAX_STACK_SIZE=4096; vXf!G`D  
private static int THRESHOLD=10; feDlH[$  
/* (non-Javadoc) t ;;U}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q460iL7yF}  
*/ EzM ?Nft  
public void sort(int[] data) { P6-s0]-g  
int[] stack=new int[MAX_STACK_SIZE]; F3@phu${  
*SDs;kg  
int top=-1; pYZmz  
int pivot; .+3g*Dv{&  
int pivotIndex,l,r; ?W?c 1>  
df4A RP+  
stack[++top]=0;  F2LLN  
stack[++top]=data.length-1; :Uzm  
M#4p E_G  
while(top>0){ 9}!qR|l3nR  
int j=stack[top--]; /tx]5`#@7]  
int i=stack[top--]; ;~ )5s'  
XH4  
pivotIndex=(i+j)/2; %+W{iu[|  
pivot=data[pivotIndex]; r1`x=r   
|P HT694Uz  
SortUtil.swap(data,pivotIndex,j); ;;OAQ`  
eCU:Q  
file://partition "Y =;.:qe  
l=i-1; h6D<go-b56  
r=j; TCwFPlF|  
do{ o4F2%0gJ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +s,=lL  
SortUtil.swap(data,l,r); 3=P]x ;[ba  
} ~*&H$6NJS  
while(l SortUtil.swap(data,l,r); NqazpB*  
SortUtil.swap(data,l,j); w7.V6S$Ga  
#Yj1w  
if((l-i)>THRESHOLD){ bQg:zww  
stack[++top]=i; Ha0M)0Anv  
stack[++top]=l-1; p J! mw\:  
} /!yU !`bY  
if((j-l)>THRESHOLD){ h,u, ^ r  
stack[++top]=l+1; %op**@4/t\  
stack[++top]=j; B[Ku\A6&  
} )1J R#  
Xv5wJlc!d  
} Ct<udO  
file://new InsertSort().sort(data); r"gJX  
insertSort(data); ^B.5GK)!  
} p?%y82E  
/** Olt?~}  
* @param data #?U}&Bd  
*/ ,*TmIPNK  
private void insertSort(int[] data) { .LnGL]/  
int temp; B:yGS*.tu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;s= l52  
} rK6l8)o  
} i4Q@K,$  
} O'p9u@kc  
Uou1mZz/  
} E1aHKjLQ  
O_ muD\  
归并排序: a8e6H30Sm  
?DS@e@lx  
package org.rut.util.algorithm.support;  c(f  
(?1y4M  
import org.rut.util.algorithm.SortUtil; ouvA~/5  
%ufN8w!p  
/** Af~$TyX  
* @author treeroot -e"H ^:  
* @since 2006-2-2 6xx<Y2@  
* @version 1.0 iJ)_RSFK  
*/ 9IdA%RM~mH  
public class MergeSort implements SortUtil.Sort{ >UTBO|95y  
#K_ii)n  
/* (non-Javadoc) +6M}O[LP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HTv2#  
*/ }<0BX\@I  
public void sort(int[] data) { ^qvZXb  
int[] temp=new int[data.length]; 7dTkp!'X-  
mergeSort(data,temp,0,data.length-1); Fbr;{T .  
} hn7# L  
~f&E7su-6+  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;LKkbT 5  
int mid=(l+r)/2;  L^/5ux  
if(l==r) return ; e9Wa<i 8  
mergeSort(data,temp,l,mid); hE'-is@7  
mergeSort(data,temp,mid+1,r); 4$HhP, gL=  
for(int i=l;i<=r;i++){ 3)t.p>VgO  
temp=data; Fj8z  
} v|_K/|  
int i1=l; q"CVcLi9  
int i2=mid+1; c)6m$5]  
for(int cur=l;cur<=r;cur++){ ]NQfX[  
if(i1==mid+1) .ljnDL/  
data[cur]=temp[i2++]; pGP7nw_g  
else if(i2>r) RtkEGxw*^  
data[cur]=temp[i1++]; Y #ap*  
else if(temp[i1] data[cur]=temp[i1++]; > ym,{EHK  
else dK$XNi13.5  
data[cur]=temp[i2++]; 6##_%PO<m  
} ;0]aq0_#(  
} xk9%F?)  
L81ZbNU?$  
} */5d>04  
j1Y~_  
改进后的归并排序: 4B8 oO  
R"/GQ`^AqA  
package org.rut.util.algorithm.support; 59 T 8r  
{Y(zd[  
import org.rut.util.algorithm.SortUtil; 1W c=5!  
nK1Slg#U  
/** >mbHy<<  
* @author treeroot a Yg6H2Un  
* @since 2006-2-2 1sy[ @Q2b  
* @version 1.0 G{As,`{  
*/ ih-#5M@  
public class ImprovedMergeSort implements SortUtil.Sort { gMi0FO'  
>jDDQ@  
private static final int THRESHOLD = 10; ozyX$tp  
<`8n^m*  
/* gmUz9P(  
* (non-Javadoc) P1. [  
* rK 8lBy:<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nmee 'oEw  
*/ |"q5sym8Y_  
public void sort(int[] data) { W<h)HhyG  
int[] temp=new int[data.length]; k&M;,e3v6  
mergeSort(data,temp,0,data.length-1); {r,.!;mHu  
} f=+mIZ  
ydEoC$?0  
private void mergeSort(int[] data, int[] temp, int l, int r) { xWH.^o,"  
int i, j, k; ?.m bK  
int mid = (l + r) / 2; rET\n(AJ  
if (l == r) x;O[c3I  
return; q^@Q"J =v  
if ((mid - l) >= THRESHOLD) 7(1|xYCx$  
mergeSort(data, temp, l, mid); lf`{zc r:  
else (q/e1L-S  
insertSort(data, l, mid - l + 1); do hA0  
if ((r - mid) > THRESHOLD) #H&|*lr  
mergeSort(data, temp, mid + 1, r); xJpA0_xfG  
else ?d\N(s9F  
insertSort(data, mid + 1, r - mid);  \{_q.;}  
RT4x\&q  
for (i = l; i <= mid; i++) { w?PkO p  
temp = data; Qab>|eSm  
} +uF>2b6'  
for (j = 1; j <= r - mid; j++) { f#>,1,S  
temp[r - j + 1] = data[j + mid]; djl*H  
} #Qw0&kM7I  
int a = temp[l]; u=*FI  
int b = temp[r]; c1(RuP:S  
for (i = l, j = r, k = l; k <= r; k++) { .|KyNBn  
if (a < b) { 1/B>XkCJ  
data[k] = temp[i++]; (Bb5?fw  
a = temp; EmWn%eMN  
} else { AG nxYV"p  
data[k] = temp[j--]; f3l&3hC  
b = temp[j]; fivw~z|[@  
} zy?|ODM  
} V;VHv=9`o  
} 3Y4?CM&0v  
94`7a<&ZNL  
/** ](]i 'fE>  
* @param data [-1^-bb  
* @param l @}u*|P*  
* @param i h%na>G  
*/ AEI>\Y  
private void insertSort(int[] data, int start, int len) { x M/+L:_<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Ys9[5@7  
} caR<Kb:;*  
} ,$L4dF3  
} sjHE/qmq-Z  
} aH(J,XY  
,Q$ q=E;X  
堆排序: ah$b [\#C  
un"Gozmt5  
package org.rut.util.algorithm.support; & bm 1Fz  
"m$##X\  
import org.rut.util.algorithm.SortUtil; IZ-1c1   
w>&aEv/f  
/** !<8W {LT  
* @author treeroot ' ,wFTV&  
* @since 2006-2-2 \[i1JG  
* @version 1.0  `,*3[  
*/ A/$QaB,x  
public class HeapSort implements SortUtil.Sort{ ;W )Y OT  
ij`w} V  
/* (non-Javadoc) MTh<|$   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A0s ZOCky  
*/ ~8Fk(E_  
public void sort(int[] data) { =!A_^;NQf  
MaxHeap h=new MaxHeap(); %g$o/A$  
h.init(data); ^$jb7HMObI  
for(int i=0;i h.remove(); {%5eMyF#  
System.arraycopy(h.queue,1,data,0,data.length); ?3`UbN:  
} :K,i\  
T@B/xAq5!  
private static class MaxHeap{ /N10  
x_Y!5yg E  
void init(int[] data){ H [\o RId  
this.queue=new int[data.length+1]; oG?Xk%7&\  
for(int i=0;i queue[++size]=data; 3BUSv#w{i  
fixUp(size); 9wUkh}s  
} <?.&^|kS  
} rl;~pO5R9  
yjX9oxhtL  
private int size=0; K&]G3W%V  
A2Ed0|By  
private int[] queue; .p3,O6y2(F  
3BJ0S.TF  
public int get() { Xza(k  
return queue[1]; >Eto( y"q  
} &-6Gc;f8  
2 c{34:  
public void remove() { 9ULQrq$?  
SortUtil.swap(queue,1,size--); Np9<:GF1  
fixDown(1); zrgk]n;Pq  
} N/2 T[s_&  
file://fixdown dt]-,Y  
private void fixDown(int k) { R4cM%l_#W  
int j; nPl?K:(  
while ((j = k << 1) <= size) { _4So{~Gf1  
if (j < size %26amp;%26amp; queue[j] j++; &i6mW8l  
if (queue[k]>queue[j]) file://不用交换 n0 {i&[I~+  
break; 9wwqcx)3(  
SortUtil.swap(queue,j,k); OX!tsARC@  
k = j; 19)i*\+  
} I;|B.j  
} sY Qk  
private void fixUp(int k) { _S1>j7RQo  
while (k > 1) { j{A y\n(  
int j = k >> 1; "Ac-tzhE  
if (queue[j]>queue[k]) DV-d(@`K  
break; %s|Ely)  
SortUtil.swap(queue,j,k); X`>i& I]  
k = j; E6ElNgL  
} cp7=epho  
} t\,PB{P:J  
m}t`FsB.  
} WX?IYQ+  
k$R-#f;  
} KwSqKI7]0  
HCs?iJ  
SortUtil: $a"Oc   
a~}OZ&PG  
package org.rut.util.algorithm; 1};Stai'  
\&3+D8H>n  
import org.rut.util.algorithm.support.BubbleSort; zP8lN(LA  
import org.rut.util.algorithm.support.HeapSort; 5x4yyb'  
import org.rut.util.algorithm.support.ImprovedMergeSort; Id .nu/  
import org.rut.util.algorithm.support.ImprovedQuickSort; pJ"qu,w  
import org.rut.util.algorithm.support.InsertSort; IueFx u  
import org.rut.util.algorithm.support.MergeSort; P@Oo$ o  
import org.rut.util.algorithm.support.QuickSort; W+?4jwqw  
import org.rut.util.algorithm.support.SelectionSort; Ckuh:bs  
import org.rut.util.algorithm.support.ShellSort; <uw9DU7G  
7' V@+5  
/** ZDYJ\}=  
* @author treeroot EgCAsSx(  
* @since 2006-2-2 K`zdc`/  
* @version 1.0 m@v\(rT.  
*/ k"zv~`i'  
public class SortUtil { )U:m:cr<  
public final static int INSERT = 1; l4YJ c  
public final static int BUBBLE = 2; {@{']Y  
public final static int SELECTION = 3; Vaw+.sG`AP  
public final static int SHELL = 4; m nX2a  
public final static int QUICK = 5; 9F;>W ET  
public final static int IMPROVED_QUICK = 6; 6}Ci>_i4#  
public final static int MERGE = 7; 37.S\ gO]  
public final static int IMPROVED_MERGE = 8; K;H&n1  
public final static int HEAP = 9; YfKdR"i+.  
WO>nIo5Y  
public static void sort(int[] data) { &Q#66ev  
sort(data, IMPROVED_QUICK); h]}wp;Z  
} #gs`#6 ,'  
private static String[] name={ 29] G^f>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 08\, <9  
}; eJX9_6m-  
_|I#{jK  
private static Sort[] impl=new Sort[]{ zL0pw'4  
new InsertSort(), {ROVvs`  
new BubbleSort(), Vv=. -&'  
new SelectionSort(), |3"KK  
new ShellSort(), PB*&aYLU  
new QuickSort(), ~P **O~  
new ImprovedQuickSort(), #r\4sVg  
new MergeSort(), .|fH y  
new ImprovedMergeSort(), 4!yzsPJL  
new HeapSort() `mJ6K&t$<  
}; j>"@,B g*  
J<h $ wM  
public static String toString(int algorithm){ `l[c_%Bm  
return name[algorithm-1]; D'Df JwA  
} v^*K:#<Q!  
;$wVu|&  
public static void sort(int[] data, int algorithm) { !?h;wR  
impl[algorithm-1].sort(data); ^k">A:E2  
} #h ]g?*}OJ  
K Z91-  
public static interface Sort { n 0L^e  
public void sort(int[] data); S|N_o   
} })Vi  
YPk fx  
public static void swap(int[] data, int i, int j) { _A9AEi'.  
int temp = data; @K !T,U  
data = data[j]; QlU8uI[dk  
data[j] = temp; &B1WtW  
} bK&+5t&  
} GGs}i1m  
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