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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。 xi5G?r  
插入排序: C(N' +VV_  
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package org.rut.util.algorithm.support; l|WdJn o  
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import org.rut.util.algorithm.SortUtil; %H)^k${  
/** `6bIxb{  
* @author treeroot awYnlE/Z1  
* @since 2006-2-2 )\nKr;4MH  
* @version 1.0 ['~E _z  
*/ HW|5'opF  
public class InsertSort implements SortUtil.Sort{ z;T_%?u  
XPJsnu  
/* (non-Javadoc) BQ8vg8e]B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) is?#wrV=K  
*/ FA5|`  
public void sort(int[] data) { e@6]rl  
int temp; 5"~F#vt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #bI ,;]T  
} 6z-ZJ|?  
} NUSb7<s,&Y  
} hA'i|;|ZYc  
^/'zU,  
} g=G>4Ua3  
.D X  
冒泡排序: CGyw '0S  
a^{"E8j  
package org.rut.util.algorithm.support; IKaa=r~  
R y47Fze  
import org.rut.util.algorithm.SortUtil; xxnvz  
`!BP.-Zv  
/** FX1[ 2\  
* @author treeroot "2l$}G  
* @since 2006-2-2 "Zh3,  
* @version 1.0 7+(on  
*/ `kE ;V!n?  
public class BubbleSort implements SortUtil.Sort{ 38<Z=#S  
DxM$4  
/* (non-Javadoc) KM-d8^\:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N.~zQVO#R  
*/ -hd@<+;E  
public void sort(int[] data) {  _'Jz+f.  
int temp; L0lqm0h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ( *&E~ g  
if(data[j] SortUtil.swap(data,j,j-1); t,bQ@x{zVC  
} >O;V[H2[  
} u; ]4 ydp  
} 9~7s*3zI  
} 1eP`  
)~X.x"}8k  
} 1]&FB{l  
+,g3Xqs}X  
选择排序: }Qu kn  
&':Ecmo~`  
package org.rut.util.algorithm.support; U ;%cp  
F<V.OFt  
import org.rut.util.algorithm.SortUtil; R$|"eb5  
5&C:&=Y  
/** m%ec=%L9  
* @author treeroot }srmG|@:  
* @since 2006-2-2 j^1Yz}6nR  
* @version 1.0 E|,RM;7  
*/ ur$=%3vM  
public class SelectionSort implements SortUtil.Sort { (IXUT6|  
^RI& `5g  
/* #ET y#jKL  
* (non-Javadoc) -~_[2u^3  
* ,K W IuCU;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {P {h|+;  
*/ Tr@|QNu  
public void sort(int[] data) { GQH15_  
int temp; .&i_~?1[N  
for (int i = 0; i < data.length; i++) { ln1!%B;  
int lowIndex = i; v\Y8+dD  
for (int j = data.length - 1; j > i; j--) { F tS"vJ\  
if (data[j] < data[lowIndex]) { m[}@\y  
lowIndex = j; -F$v`|(O+  
} B?nw([4m  
} Fp&tJ]=B.  
SortUtil.swap(data,i,lowIndex); Q "vhl2RX  
} I/B*iW^  
} GBY-WN4sc[  
0$g;O5y"i  
} 8wEUly  
XN&cM,   
Shell排序: \\ZCi`O  
]N;\AXZ7  
package org.rut.util.algorithm.support; ?/}N  
I7 = 4%)A  
import org.rut.util.algorithm.SortUtil; wJc`^gj  
Y"  Ut  
/** FP<mFqy  
* @author treeroot 1/ 3<u::  
* @since 2006-2-2 _C3O^/<n4V  
* @version 1.0 Zmc"  
*/ ZLZh$eZZ  
public class ShellSort implements SortUtil.Sort{ LgxsO:mi  
*x-@}WY$U  
/* (non-Javadoc) e>2KW5.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : i{tqY%  
*/ <MyT ;  
public void sort(int[] data) { B,fVNpqo  
for(int i=data.length/2;i>2;i/=2){ 8n,/hY>w  
for(int j=0;j insertSort(data,j,i); 5wa'SexqE  
} LC, 6hpmh  
} Bra}HjHO  
insertSort(data,0,1); -#Ys67,4N  
} _)S['[  
()Q#@?c~  
/** %M,^)lRP  
* @param data 6z5wFzJv?q  
* @param j /.WIED}>  
* @param i az1#:Go  
*/ K (,MtY*  
private void insertSort(int[] data, int start, int inc) { ^o87qr0g]  
int temp; 8#nAs\^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); r"9hpZH  
} I {%Y0S  
} 4YSVy2x  
} Lz&FywF-l  
YU`}T<;bg  
} !l-Q.=yw  
YB1Jv[  
快速排序: ,MjlA{0  
c'INmc I|  
package org.rut.util.algorithm.support; m}(M{^\|  
Dk Ef;P  
import org.rut.util.algorithm.SortUtil; 0|DyYu  
qjsEyro$-  
/** " ?Ux\)*  
* @author treeroot y(wb?86#W5  
* @since 2006-2-2 _;,"!'R`f  
* @version 1.0 xpJ=yxO  
*/ m al?3*x/  
public class QuickSort implements SortUtil.Sort{ I|l5e2j  
9vP#/ -g  
/* (non-Javadoc) '=`af>Nc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TkR#Kzv380  
*/ cGyR_8:2cv  
public void sort(int[] data) { 0g2rajS  
quickSort(data,0,data.length-1); \UP=pT@  
} & }7+.^  
private void quickSort(int[] data,int i,int j){ u2S8D uJ  
int pivotIndex=(i+j)/2; 3Rhoul[S  
file://swap n/{ pQ&B  
SortUtil.swap(data,pivotIndex,j); V aoqI  
e'sS",o*  
int k=partition(data,i-1,j,data[j]); ?kK3%uJy&  
SortUtil.swap(data,k,j); {9FL}Jrt  
if((k-i)>1) quickSort(data,i,k-1); R7 rO7M !  
if((j-k)>1) quickSort(data,k+1,j); =M6{{lI/  
5@J]#bp0M  
} {"2Hv;x  
/** Mh2Zj  
* @param data {oS/Xa  
* @param i r~G  amjS  
* @param j h$#PboLd  
* @return 1En:QQ4/  
*/ }5;/!P_A  
private int partition(int[] data, int l, int r,int pivot) { &;bey4_J  
do{ ,9M2'6=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h1)ny1;  
SortUtil.swap(data,l,r); -zUBK  
} HV'M31m~q  
while(l SortUtil.swap(data,l,r); g~2=he\C  
return l; ma xpR>7`j  
} J/QqwoR  
2tg07  
} <J>k%,:B  
d)3jkHYEjj  
改进后的快速排序: !ALq?u  
C[';B)a  
package org.rut.util.algorithm.support; ,vo]WIQ\:  
e=s({V  
import org.rut.util.algorithm.SortUtil; },{sJ0To  
k[}WYs+r  
/** iL!4r]~H  
* @author treeroot lvRTy|%[  
* @since 2006-2-2 j]U~ZAn,K  
* @version 1.0 H|$ *HQm  
*/ GO.7IL{ {  
public class ImprovedQuickSort implements SortUtil.Sort { @ M4m!;rM  
M~h.M PI  
private static int MAX_STACK_SIZE=4096; Rt7l`|g a+  
private static int THRESHOLD=10; (Y*9 [hm  
/* (non-Javadoc) >X*G6p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (! 8y~n 1  
*/ cE>m/^SKr  
public void sort(int[] data) { AiL80W^=d)  
int[] stack=new int[MAX_STACK_SIZE]; iJeo d fC  
>oN Wf  
int top=-1; }]M'f:%b  
int pivot; BnfuI  
int pivotIndex,l,r; %O!TS_~9  
kT]jJbb"  
stack[++top]=0; >l #D9%  
stack[++top]=data.length-1; ,xR u74  
&grvlK  
while(top>0){ E,dUO;  
int j=stack[top--]; R! n7g8I%  
int i=stack[top--]; 89j:YfA=v  
#k1IrqUp  
pivotIndex=(i+j)/2; L]H' ]wpn=  
pivot=data[pivotIndex]; N`{ 6<Z0  
*&I _fAh]  
SortUtil.swap(data,pivotIndex,j); >K&chg@Hv  
AyW=.  
file://partition D>^g2!b:  
l=i-1; l D->1=z  
r=j; ^QjkZ^<dD  
do{ 4e?bkC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hT,rcIkg:  
SortUtil.swap(data,l,r); '? -N  
} 5wdKu,nq  
while(l SortUtil.swap(data,l,r); `A5n6*A7  
SortUtil.swap(data,l,j); .beqfcj"  
TyA1Qk\  
if((l-i)>THRESHOLD){ BR-wL3x b  
stack[++top]=i; p5py3k  
stack[++top]=l-1; )*R';/zaI  
} >$yA ,N  
if((j-l)>THRESHOLD){ cW_l|  
stack[++top]=l+1; {2QP6XsJ  
stack[++top]=j; [$ uKI,l  
} B'mUDW8\D  
:>0,MO.^~K  
} MBLDx sZ-  
file://new InsertSort().sort(data); *YX5bpR?  
insertSort(data); #z70:-`.[M  
} /fLm )vN  
/** FhPCFmmUT  
* @param data p-l FzNPc0  
*/ WMW=RgiW\  
private void insertSort(int[] data) { '/9q7?[E!  
int temp; ;;m;f^]}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "'GhE+>Z  
} G;J)[y  
} x%O6/rl  
} s"J)Jc  
_"OE}$C  
} '/OQ[f=K  
@Kn@j D;  
归并排序: yTn<5T[H  
^16zZ*  
package org.rut.util.algorithm.support; H:9G/Nev  
S{v]B_N[M  
import org.rut.util.algorithm.SortUtil; #0Uz1[  
p@Cas  
/** KT*>OYI  
* @author treeroot eE=2~ ylU  
* @since 2006-2-2 FzP1b_i  
* @version 1.0 @/ nGc9h  
*/ hg:$H9\%  
public class MergeSort implements SortUtil.Sort{ eX lJ=S}  
*W^a<Zm8>  
/* (non-Javadoc) @$t\yBSK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GKOl{och  
*/ nz'6^D7`r  
public void sort(int[] data) { B[6k [Vs  
int[] temp=new int[data.length]; @HSK[[?  
mergeSort(data,temp,0,data.length-1); {]Cn@.TPD  
} Vp0_R9oQ  
#U7pT!F x  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^nNpT!o  
int mid=(l+r)/2; I.(@#v7T  
if(l==r) return ; `m8WLj  
mergeSort(data,temp,l,mid); Pa+_{9  
mergeSort(data,temp,mid+1,r); `u R`O9)e  
for(int i=l;i<=r;i++){ `u7^r^>A  
temp=data; RHpjJZUV  
} $uJc/  
int i1=l; $duT'G, -  
int i2=mid+1; .Pte}pM"v  
for(int cur=l;cur<=r;cur++){ g oyQ',+  
if(i1==mid+1) S("dU`T?  
data[cur]=temp[i2++]; <%`Rku  
else if(i2>r) ](8F]J ,  
data[cur]=temp[i1++]; 1|!)*!hu  
else if(temp[i1] data[cur]=temp[i1++]; %l#X6jkt  
else T9!NuKfur  
data[cur]=temp[i2++]; 2"6qg>]-t  
} ^W9O_5\g4a  
} % ;R&cSZ  
V82I%gPF  
} >;bym)  
=$L+J O  
改进后的归并排序: $$W2{vr7+  
r>i95u82'  
package org.rut.util.algorithm.support; fH?A.JP=a  
HB$?}V  
import org.rut.util.algorithm.SortUtil; -:"KFc8A  
EY3F9h3xM|  
/** osd oL  
* @author treeroot CY{!BV'  
* @since 2006-2-2 Q-F$Ryj^  
* @version 1.0 *h=>*t?I2  
*/ QtXiUx^ k<  
public class ImprovedMergeSort implements SortUtil.Sort { vD:J!|hs(  
: ir3u  
private static final int THRESHOLD = 10; nf<I  
)8eb(!}7  
/* q# Q%p+  
* (non-Javadoc) K/*"U*9Kv  
* ]4V1]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,b IJW]h0  
*/ 3A[<LnKR^E  
public void sort(int[] data) { ' Q(kx*;  
int[] temp=new int[data.length]; surNJ,)  
mergeSort(data,temp,0,data.length-1); bu<d>XR  
} oWLP|c~ Ap  
n-],!pL^  
private void mergeSort(int[] data, int[] temp, int l, int r) { {^(uoB C/  
int i, j, k; TF5jTpGq  
int mid = (l + r) / 2; o|y_j4 9  
if (l == r) H_t0$x(\  
return; C& XPn;f  
if ((mid - l) >= THRESHOLD) _j3rs97@|  
mergeSort(data, temp, l, mid); #Ha"rr46p  
else Z!^>!' Z  
insertSort(data, l, mid - l + 1); s^IC]sW\%  
if ((r - mid) > THRESHOLD) r\F2X J^  
mergeSort(data, temp, mid + 1, r); $F9w0kz:,*  
else i=]R1yP  
insertSort(data, mid + 1, r - mid); .-mIU.Nwi  
DO~[VK%|  
for (i = l; i <= mid; i++) { )?{!7/H F@  
temp = data; WQze|b %  
} Y<(7u`F  
for (j = 1; j <= r - mid; j++) { }7b{ZbDI  
temp[r - j + 1] = data[j + mid]; C4`&_yoP4-  
} ai1;v@1  
int a = temp[l]; TQNdBq5I6  
int b = temp[r]; D.%%D%AdB  
for (i = l, j = r, k = l; k <= r; k++) { &!O?h/&X3  
if (a < b) { 0*tnJB  
data[k] = temp[i++]; MN5}}@  
a = temp; k\;D;e{  
} else { wbcip8<t  
data[k] = temp[j--]; n'{jc 6&|  
b = temp[j]; Mp!1xx  
} aXQAm$/ >  
} '0 )`.  
} 3)LS#=  
2RF3pIFrm  
/** [g<gu~  
* @param data ;<' 'oY  
* @param l rP2h9Cb  
* @param i Y3FFi M[s~  
*/ T}1"  
private void insertSort(int[] data, int start, int len) { 3`vKEThY)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K@%T5M4j  
} km5gO|V>m  
} SqRM*Cf=  
} 2-N7%]h  
} mwsBj)  
"=C~I W  
堆排序: :AFU5mR4&  
KnA BFH  
package org.rut.util.algorithm.support; @NL<v-t  
2)\MxvfOh  
import org.rut.util.algorithm.SortUtil; { pQJ.QI  
.|g@#XIwe#  
/** Mt`LOdiC_  
* @author treeroot eN </H.bm]  
* @since 2006-2-2 d}Guj/cx,  
* @version 1.0 -AD` (b7q  
*/ '%ZKvZ-  
public class HeapSort implements SortUtil.Sort{ _Li.}g@Bd  
He4HI Z  
/* (non-Javadoc) KehM.c^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zDtC]y'  
*/ >R6mI  
public void sort(int[] data) { zA+0jhuG  
MaxHeap h=new MaxHeap(); O;V^Fk(  
h.init(data); ~xc/Dsb$  
for(int i=0;i h.remove(); &[j9Up'   
System.arraycopy(h.queue,1,data,0,data.length); ')yYpWO  
} Vj1V;dHv  
V_m!<s r(  
private static class MaxHeap{ 60n P'xfR  
Opg_-Bf  
void init(int[] data){ iHc(e(CB<  
this.queue=new int[data.length+1]; x\~ <8o  
for(int i=0;i queue[++size]=data; QJVB:>A  
fixUp(size); .=<s@Sg,t  
} p^q/u  
} }Rh%bf7,  
'U ZzH$h  
private int size=0; vL[IVBG^  
XRQ1Uh6  
private int[] queue; [_3&  
Zos.WS#  
public int get() { 0QPY+6  
return queue[1]; `+vQ5l$;L  
} DCLu^:|C"  
RFFbS{U*  
public void remove() { 5[B)U">]  
SortUtil.swap(queue,1,size--); b&4JHyleF  
fixDown(1); OvwoU=u  
} "K9[P :nw  
file://fixdown Wf5;~RJC?  
private void fixDown(int k) { 8mRZ(B>% X  
int j; oH v.EO  
while ((j = k << 1) <= size) { >?ar  
if (j < size %26amp;%26amp; queue[j] j++;  q"T?  
if (queue[k]>queue[j]) file://不用交换 )F&.0 '  
break; |@1(^GX  
SortUtil.swap(queue,j,k); 0g=vMLi  
k = j; 2_3os P\Z  
} v5pkP  
} c /^:vTF  
private void fixUp(int k) { F;_o `h  
while (k > 1) { |Rx+2`6Dp  
int j = k >> 1; g{sp<w0  
if (queue[j]>queue[k]) 4Hb"yp$  
break; {` bX*]  
SortUtil.swap(queue,j,k); >7cj. %  
k = j; `W_&^>yl  
} 9ei'oZ  
} \h s7>5O^K  
\}kR'l  
} gpzFY"MS=  
.mqMzV  
} j r .{M  
d_&pxy? >  
SortUtil: o+ {i26%  
'~f*O0_  
package org.rut.util.algorithm; zd- *UF i  
qB K68B)  
import org.rut.util.algorithm.support.BubbleSort; 2G5|J{4w  
import org.rut.util.algorithm.support.HeapSort; =N\$$3m?  
import org.rut.util.algorithm.support.ImprovedMergeSort; HN/YuP03[  
import org.rut.util.algorithm.support.ImprovedQuickSort; NYg&8s.  
import org.rut.util.algorithm.support.InsertSort; h:C:opa-=  
import org.rut.util.algorithm.support.MergeSort; |x&4vHXR0  
import org.rut.util.algorithm.support.QuickSort; MNTVG&h  
import org.rut.util.algorithm.support.SelectionSort; _7;G$\^&.  
import org.rut.util.algorithm.support.ShellSort; LX&O"YY  
Ez-AQ'  
/** /u9 0)x  
* @author treeroot ?z-nY,'^uq  
* @since 2006-2-2 L[Y$ `e{zd  
* @version 1.0 zPHx\z"  
*/ i,Z-UA|f=T  
public class SortUtil { .=G3wox3  
public final static int INSERT = 1; s[UV(::E  
public final static int BUBBLE = 2; hR2 R  
public final static int SELECTION = 3; cw)J+Lyh  
public final static int SHELL = 4; FqnD"]A  
public final static int QUICK = 5; + `'wY?  
public final static int IMPROVED_QUICK = 6; CK4#ZOiaa  
public final static int MERGE = 7; jgXr2JQ<  
public final static int IMPROVED_MERGE = 8; mRyf+O[  
public final static int HEAP = 9; y0O e)oP  
%yKcp5_  
public static void sort(int[] data) { AA ~7"2e  
sort(data, IMPROVED_QUICK); D,FgX/&i/  
} &6Lh>n(  
private static String[] name={ jw\4`NZ]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ouoIbA9X  
}; pjV70D8$A  
A~k: m0MX  
private static Sort[] impl=new Sort[]{ g26_#4 P  
new InsertSort(), H|j]uLZ  
new BubbleSort(), '|v<^EH  
new SelectionSort(), zT/woiyB`  
new ShellSort(), =c#mR" 1  
new QuickSort(), |t3}>+"?z  
new ImprovedQuickSort(), g}hNsU=$5~  
new MergeSort(), +gBD E :  
new ImprovedMergeSort(), mKV31wvK}  
new HeapSort() pK_zq  
}; rij%l+%@#  
~mah.8G  
public static String toString(int algorithm){ 'aD"v>  
return name[algorithm-1]; <j#IR  
} CV{ZoY  
:U'n0\  
public static void sort(int[] data, int algorithm) { VB8eGMo  
impl[algorithm-1].sort(data); uP8 cW([  
} SLNOOEN  
P$AHw;n[R  
public static interface Sort { }waZGJLN  
public void sort(int[] data); <.BY=z=H  
} `2V{]F  
8<Yv:8%B6  
public static void swap(int[] data, int i, int j) { > 9z-/e  
int temp = data; >nK (  
data = data[j]; RASk=B  
data[j] = temp; MOB'rPIUI  
} " ? V;C  
} 4-'0# a  
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