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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。 \b6vu^;p  
插入排序: ObzFh?W  
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package org.rut.util.algorithm.support; 8bf~uHAr  
^U.t5jj  
import org.rut.util.algorithm.SortUtil; PHh4ZFl]_I  
/** ']__V[  
* @author treeroot o+% ($p  
* @since 2006-2-2 tVr^1Y  
* @version 1.0 $*S&i(z  
*/ nYE' 'g+x  
public class InsertSort implements SortUtil.Sort{ &VdKL2  
j FH wu*  
/* (non-Javadoc) m2j]wUh"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z0-[ RGg  
*/ {;^GKb+  
public void sort(int[] data) { 6Q~(ibKx  
int temp; KGP*G BZr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LKsK!X  
} j G^f_w  
} ^$x1~}D  
} ]z#9)i_l3  
"wj~KbT}&  
} MY>*F[~ 2  
~gA^tc3G  
冒泡排序: W6!o=()  
>E\U$}WCG  
package org.rut.util.algorithm.support; "59"HVV  
Fu\!'\6  
import org.rut.util.algorithm.SortUtil; OeYZLC(  
Rz:1(^oA  
/** d]I3zS IC  
* @author treeroot i~i ?M)  
* @since 2006-2-2 _(J4  
* @version 1.0 K]H [A,  
*/ m;oCi }fL  
public class BubbleSort implements SortUtil.Sort{ |rL#HG  
O3En+m~3n)  
/* (non-Javadoc) xDO1gnH%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w%uM=YmuT  
*/ & oj$h  
public void sort(int[] data) { kj]m@mS[  
int temp; T;1aL4w"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ f|NWn`#bY  
if(data[j] SortUtil.swap(data,j,j-1); tBtmqxx  
} _`d=0l*8  
} D`hg+64}  
} 8\BYm|%aa  
} ^CfWLL& c  
#'fQx`LV  
} :P?zy|aBi  
V[^ +lR  
选择排序: !JnxNIr&i|  
w@i;<LY.  
package org.rut.util.algorithm.support; W;^6=(&xn  
#%{x*y:Ms  
import org.rut.util.algorithm.SortUtil; .gs:.X)TG9  
R&@NFin  
/** ^2-+MWW.  
* @author treeroot LLU]KZhtY|  
* @since 2006-2-2 8<_dNt'91  
* @version 1.0 HbMD5(  
*/ ( yv)zg9  
public class SelectionSort implements SortUtil.Sort { Ji e=/:&  
*f k3IvAXu  
/* uXm}THI  
* (non-Javadoc) AVi,+n  
* Xp?WoC N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UYkuz  
*/ VmP5`):?b  
public void sort(int[] data) { /ULO#CN?;  
int temp; Ur,{ZGm  
for (int i = 0; i < data.length; i++) { "VI2--%v3  
int lowIndex = i; r [4dGt  
for (int j = data.length - 1; j > i; j--) { aSH =|Jnc  
if (data[j] < data[lowIndex]) { @tVl8]y  
lowIndex = j; miEf<<L#z  
} (&oT6Ji  
} Hq0O!Zv  
SortUtil.swap(data,i,lowIndex); >fx/TSql:J  
} 9HG"}CGZP  
} l *]nvd_  
3}x6IM 2  
} RWdx) qj{  
M <c cfU!  
Shell排序: >gZ"^iW  
o!sHK9hvJ)  
package org.rut.util.algorithm.support; TSKR~3D#  
^.u J]k0  
import org.rut.util.algorithm.SortUtil; 5@yBUwMSj  
>e^8fpgSo  
/** ,.TwM;w=  
* @author treeroot #)z7&nD  
* @since 2006-2-2 #/o1D^  
* @version 1.0 G&@vTcF  
*/ Q|tzA10E  
public class ShellSort implements SortUtil.Sort{ :,pdR>q%(y  
jM;?);Dd  
/* (non-Javadoc) CQI\/oaO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ucX!6)Op  
*/ ~NZ}@J{00_  
public void sort(int[] data) { QR(j7>+J^  
for(int i=data.length/2;i>2;i/=2){ <~P([5  
for(int j=0;j insertSort(data,j,i); 3Ss)i7  
} OJ,Z  
} TF-a 1z  
insertSort(data,0,1); Tk:%YS;=  
} ~NB lJULS  
Oz4yUR  
/** u=& $Z  
* @param data  R7ExMJw  
* @param j VNHt ]Ewj  
* @param i g]m}@b6(h  
*/ Mk|*=#e;  
private void insertSort(int[] data, int start, int inc) { yCZ[z A  
int temp; ]6;oS-4gu?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]Ag{#GJ5D  
} I^!c1S  
} xG|n7w*  
} 7-2,|(Xg  
<-N7Skkk!  
} &D#B"XI  
wY_! s Qo  
快速排序: }080=E  
v.{I^=  
package org.rut.util.algorithm.support; uV\~2#o$_  
!Tu4V\^~A  
import org.rut.util.algorithm.SortUtil; 'OvyQ/T  
Jk,}3Cr/  
/** Hg`2- Nl  
* @author treeroot p ^U#1c  
* @since 2006-2-2 aT}?-CUxx  
* @version 1.0 _v +At;Y  
*/ a.B<W9$`  
public class QuickSort implements SortUtil.Sort{ {z*`* O@  
BTa#}LBZ+  
/* (non-Javadoc) &d&nsQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eZ;DNZK av  
*/ W=zp:6Z~  
public void sort(int[] data) { 6d%)MEM  
quickSort(data,0,data.length-1); W kSv@Y,  
} eN-lz_..7  
private void quickSort(int[] data,int i,int j){ R\:t 73  
int pivotIndex=(i+j)/2; t2#zQ[~X!  
file://swap A =l1_8,`h  
SortUtil.swap(data,pivotIndex,j); SS"Z>talw  
`fUP q ;  
int k=partition(data,i-1,j,data[j]); N3o kN8d  
SortUtil.swap(data,k,j); {14sI*b16  
if((k-i)>1) quickSort(data,i,k-1); %\?Gzc_  
if((j-k)>1) quickSort(data,k+1,j); [Ontip  
~)%DiGW&  
} t0+D~F(g  
/** k{ibD5B  
* @param data #u$ Z/,  
* @param i A^@,Ha  
* @param j VQHQvFRZ)  
* @return C5&+1VrP  
*/ !)h?2#V8;  
private int partition(int[] data, int l, int r,int pivot) { =qFDrDt  
do{ Wm>AR? b  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /<it2=  
SortUtil.swap(data,l,r); Zm#qW2a]P  
} Y"'k $jS-  
while(l SortUtil.swap(data,l,r); %a$Fsn  
return l; 'QxPQ cU  
} n8 e4`-cY  
*tL1t\jY  
} +<W8kb  
{p M3f  
改进后的快速排序: o>oZh1/\T,  
.aE%z/@s=  
package org.rut.util.algorithm.support; 2~q(?wY  
R4Si{J*O  
import org.rut.util.algorithm.SortUtil; O>sE~~g]?  
Ll'!aar,  
/** _~_6qTv-d  
* @author treeroot WDQw)EUl&  
* @since 2006-2-2 kJ:zMVN  
* @version 1.0 l$eKV(CZ4  
*/ <]kifiN#  
public class ImprovedQuickSort implements SortUtil.Sort { ?8aPd"x  
6jo+i[h  
private static int MAX_STACK_SIZE=4096; u(P;) E"1  
private static int THRESHOLD=10; <nE|Y@S  
/* (non-Javadoc) <n|.Z-gF\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q5pm^X._j  
*/ Cd51. Sk(l  
public void sort(int[] data) { ,Z p9,nf  
int[] stack=new int[MAX_STACK_SIZE]; /S\y-M9  
8WRxM%gsH  
int top=-1; 5"8R|NU:\0  
int pivot; p:gM?2p1  
int pivotIndex,l,r; SWM6+i p  
]#Q'~X W  
stack[++top]=0; *r]Mn~3  
stack[++top]=data.length-1; Ax"I$6n>  
XqK\'8]\Mw  
while(top>0){ ?jRyw(Q  
int j=stack[top--]; ?UV ^6  
int i=stack[top--]; J t,7S4JL  
rCFTch"  
pivotIndex=(i+j)/2; x:WxEw>R  
pivot=data[pivotIndex]; +jpC%o}C  
1q(o3%   
SortUtil.swap(data,pivotIndex,j); y6 !Zt}m  
txW<r8  
file://partition .3*VkAs  
l=i-1; m1(cN%DBd  
r=j; NK0hT,_  
do{ 8/* 6&#-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [Q*aJLG  
SortUtil.swap(data,l,r); HOY9{>E}z  
} /"%QIy'{  
while(l SortUtil.swap(data,l,r); Il9pL~u  
SortUtil.swap(data,l,j); /]*#+;;%  
A`qb5LLJ)  
if((l-i)>THRESHOLD){ 2e @zd\  
stack[++top]=i; |`yzH$,F  
stack[++top]=l-1; 8GD!]t#  
} ]VS$ ?wD  
if((j-l)>THRESHOLD){ =\l7k<  
stack[++top]=l+1; ; (;J  
stack[++top]=j; o4g<[X)  
} Uv"GG: K_  
niIjatT  
} HJ,sZ4*]]  
file://new InsertSort().sort(data); $S0eERg a  
insertSort(data); ooPH [p  
} $6]7>:8mz  
/** %aeQL;# V  
* @param data r` T(xJ!)  
*/ d^<a)>5h  
private void insertSort(int[] data) { ,Cckp! 6  
int temp; wf8GH}2A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7VwLyy  
} P"WnU'+  
} ] x_WO_  
} Aa;s.:?  
32*FISH^  
} %wp#vO-$  
#815h,nP+  
归并排序: Z 7M%}V%  
ceu}Lp^%/  
package org.rut.util.algorithm.support; \4.U.pKY  
ToHCS/J59  
import org.rut.util.algorithm.SortUtil; wGC)gW  
"wPFQXU  
/** "jUr[X2J  
* @author treeroot hp E?  
* @since 2006-2-2 vZns,K#4H\  
* @version 1.0 \KaWR  
*/ Q(2X$7iRq  
public class MergeSort implements SortUtil.Sort{ {m/\AG)1I  
hL,+wJ+A  
/* (non-Javadoc) D~xU r )E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M7(vI4V  
*/ 0Up@+R2  
public void sort(int[] data) { %q@eCN  
int[] temp=new int[data.length]; 2\z"6  
mergeSort(data,temp,0,data.length-1); C||A[JOS  
} G'<J8;B* t  
.bYDj&]P{  
private void mergeSort(int[] data,int[] temp,int l,int r){ &!{wbm@  
int mid=(l+r)/2; ~OXC6z  
if(l==r) return ; wOy1i/oj  
mergeSort(data,temp,l,mid); y^gazr"  
mergeSort(data,temp,mid+1,r); k]Y#-Q1p~  
for(int i=l;i<=r;i++){ ul e]eRAG  
temp=data; F%Lniv/N  
} 4C ;4"6  
int i1=l; _F *(" o  
int i2=mid+1; Yp`6305f  
for(int cur=l;cur<=r;cur++){ w 1E}F  
if(i1==mid+1) OKp(A  
data[cur]=temp[i2++]; sM?bUg0w  
else if(i2>r) pX]*&[X?  
data[cur]=temp[i1++]; In0kP"  
else if(temp[i1] data[cur]=temp[i1++]; *a@pZI0'  
else K'%,dn  
data[cur]=temp[i2++]; rSD!u0c [  
} |Mp_qg?g  
} Es kh=xA {  
@$~ BU;kR  
} FG~p _[K  
6$>m s6g%  
改进后的归并排序: Hm+-gI3*  
,XW6W&vR;  
package org.rut.util.algorithm.support; R.R(|!w>  
fz W%(.tc\  
import org.rut.util.algorithm.SortUtil; 2FO.!m  
,sk;|OAI  
/** '?5=j1  
* @author treeroot 0*%j6*XDq9  
* @since 2006-2-2 3R?7&oXvH  
* @version 1.0 5( lE$&   
*/ -uiZp !  
public class ImprovedMergeSort implements SortUtil.Sort { 2;4Of~  
qeCx.Z  
private static final int THRESHOLD = 10; ]do0{I%\eq  
SMQuJ_  
/* 56*}}B$?  
* (non-Javadoc) >Ge&v'~_|  
* aT F}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &{* [7Ad  
*/ vhEPk2wD,  
public void sort(int[] data) { g?M\Z";  
int[] temp=new int[data.length]; ^"ywltW>  
mergeSort(data,temp,0,data.length-1); $.(>Sj1  
} O@3EJkv  
'=x   
private void mergeSort(int[] data, int[] temp, int l, int r) { ;tI=xNre`1  
int i, j, k; TD,W*(b  
int mid = (l + r) / 2; Y.@ vdW  
if (l == r) 7I`e5\ u  
return; MyuFZ7Q4$  
if ((mid - l) >= THRESHOLD) mY.[AIB  
mergeSort(data, temp, l, mid); @5zL4n@w  
else r,i^-jv;  
insertSort(data, l, mid - l + 1); tCK%vd%  
if ((r - mid) > THRESHOLD) W)V"QrFK  
mergeSort(data, temp, mid + 1, r); pr/yDG ia  
else Iq_cs '  
insertSort(data, mid + 1, r - mid); $dci?7q  
#:{PAt  
for (i = l; i <= mid; i++) { B{QY-F~  
temp = data; E/LR(d_  
} 1bd(JL  
for (j = 1; j <= r - mid; j++) { ro6peUL*2`  
temp[r - j + 1] = data[j + mid]; E$f.&<>T  
} %\[LM$f{z  
int a = temp[l]; R |8)iW^  
int b = temp[r]; Hbx=vLQ6  
for (i = l, j = r, k = l; k <= r; k++) { b}o^ ?NtA  
if (a < b) { Yv9(8  
data[k] = temp[i++]; 1d|+7  
a = temp; 1I KDp]SN  
} else { A;w,m{9<  
data[k] = temp[j--]; Tm[IOuhM'?  
b = temp[j]; X'ryfa1|  
} c^UG}:Y  
} eqs.zL  
} 9<P1?Q  
!3$Ph  
/** vgHMVzxj  
* @param data +WK!}xZR  
* @param l NXDdU^w7B  
* @param i J`uV $l:  
*/ (2QFwBW]  
private void insertSort(int[] data, int start, int len) { //>f#8Ho  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bKmR &  
} v%= G~kF}[  
} .!,T> :R  
} e0+N1kY  
} znFa4  
` *8p T  
堆排序: DK&J"0jz,  
Gu|}ax"  
package org.rut.util.algorithm.support; QOEcp% 6I}  
lz faW-nu  
import org.rut.util.algorithm.SortUtil; A/W0O;*q  
}X)mZyM[  
/** i=.zkIjSh  
* @author treeroot Cz+>S3v M  
* @since 2006-2-2 6jiVz%`=Z  
* @version 1.0 8"LvkN/v^  
*/ :u`  
public class HeapSort implements SortUtil.Sort{ \$V~kgQ0  
,S2D/Y^>  
/* (non-Javadoc) H{E223  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d5\w'@Di  
*/ c@~\ FUr  
public void sort(int[] data) { 7z)Hq./3@  
MaxHeap h=new MaxHeap(); BE:HO^-.1  
h.init(data); ; GRSe  
for(int i=0;i h.remove(); 7\rz*  
System.arraycopy(h.queue,1,data,0,data.length); N{tNe-5  
} pz6fL=Xd  
My76]\Psh  
private static class MaxHeap{ D^]7/w:$-  
{2}O\A  
void init(int[] data){ 7pMrYIP  
this.queue=new int[data.length+1]; V?t^ J7{'  
for(int i=0;i queue[++size]=data; \e T0d<  
fixUp(size); U{} bx  
} >>Z.]  
} LS+ _y <v=  
mMS%O]m,|  
private int size=0; kTT!gZP$  
/G9wW+1  
private int[] queue; 7;) T;X  
t)=u}t$  
public int get() { H? Z5ex  
return queue[1]; 6FiI\  
} &{]zL  
#pErGz'{  
public void remove() { `6)GjZh^  
SortUtil.swap(queue,1,size--); 0+}42g|_Z  
fixDown(1); Cz-eiPlq  
} x?9rT 0D  
file://fixdown C,P>7  
private void fixDown(int k) { Pb]: i+c)  
int j; %# ?)+8"l  
while ((j = k << 1) <= size) { ?]]> WP  
if (j < size %26amp;%26amp; queue[j] j++; Fc M  
if (queue[k]>queue[j]) file://不用交换 IC{\iwO/~c  
break; U}~SY  
SortUtil.swap(queue,j,k); Jajo!X*Wai  
k = j; }KEyJj3"DA  
} b lP@Cn2  
} |,c QJ  
private void fixUp(int k) { X+z!?W*a  
while (k > 1) { P hs4]!  
int j = k >> 1; __fa,kK{?  
if (queue[j]>queue[k]) zt/b S/  
break; ?'Y\5n/*$  
SortUtil.swap(queue,j,k); Ly"u }e  
k = j; 6oMU) DIa  
} SMY,bU'a  
} oDogM`T`  
{`2! 3= "  
} \1cay#X  
ig5 d-A  
} 'G;y!<a  
jNhiY  
SortUtil: 9fj3q>Un,  
7g8}]\i+  
package org.rut.util.algorithm; r: ]t9y>$<  
HT0VdvLw  
import org.rut.util.algorithm.support.BubbleSort; thy)J.<J  
import org.rut.util.algorithm.support.HeapSort; sG[v vm  
import org.rut.util.algorithm.support.ImprovedMergeSort; T2<?4^xN  
import org.rut.util.algorithm.support.ImprovedQuickSort; {VtmQU? cJ  
import org.rut.util.algorithm.support.InsertSort; d]{wZ#x  
import org.rut.util.algorithm.support.MergeSort;  S {oW  
import org.rut.util.algorithm.support.QuickSort; B9^ @d  
import org.rut.util.algorithm.support.SelectionSort; |T\`wcP`q  
import org.rut.util.algorithm.support.ShellSort; r"sK@  
-c|dTZ8D)8  
/** AiKja>Fl<  
* @author treeroot   V` 7  
* @since 2006-2-2 I .jB^  
* @version 1.0 W=:4I[a6Q  
*/ N4]QmRX/j  
public class SortUtil { Fk=Sx<TX  
public final static int INSERT = 1; qM= $,s*  
public final static int BUBBLE = 2; y (@j;Q3(r  
public final static int SELECTION = 3; 7DZxr Vw  
public final static int SHELL = 4; .< 7M4Z  
public final static int QUICK = 5; @SeInew;`l  
public final static int IMPROVED_QUICK = 6; oS6dcJHf  
public final static int MERGE = 7; B( r~Nvc  
public final static int IMPROVED_MERGE = 8; go >*n\  
public final static int HEAP = 9; b* k=  
_/(DEF+G  
public static void sort(int[] data) { ,' VT75  
sort(data, IMPROVED_QUICK); g@0<`g  
} HY-7{irR~  
private static String[] name={ $cjwY$6  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H@Yj  
}; Sggha~E2s  
KZrg4TEVi  
private static Sort[] impl=new Sort[]{ a,mG5bQ!  
new InsertSort(), r&  
new BubbleSort(), 5:y\ejU  
new SelectionSort(), S:2M9nC  
new ShellSort(), _=0%3Sh  
new QuickSort(), &CBW>*B  
new ImprovedQuickSort(), DEJ0<pnQr  
new MergeSort(), %87D(h!.I4  
new ImprovedMergeSort(), "/H B#  
new HeapSort() U}f"a!  
}; m8M2ka  
= VIU  
public static String toString(int algorithm){ %!DdjC&5*  
return name[algorithm-1]; Ac^hZ.qPz  
} QguRU|y  
7`eg;s^  
public static void sort(int[] data, int algorithm) { (<GBhNj=c  
impl[algorithm-1].sort(data); S $j"'K  
} 0\tV@ 6p2=  
?{=& Ro  
public static interface Sort { rtM29~c>@  
public void sort(int[] data); )M3} 6^s]  
} f2h`bO  
Ln-UN$2~F  
public static void swap(int[] data, int i, int j) { M2Q*#U>6r  
int temp = data; L#huTKX}  
data = data[j]; JG^fu*K  
data[j] = temp; wFbw3>'a9  
} LV}Z[\?   
} ]bcAbCZ@  
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