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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。 I@.qon2V  
插入排序: &%^[2^H8"  
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package org.rut.util.algorithm.support; l.C {Ar  
O'(qeN<^w  
import org.rut.util.algorithm.SortUtil; /+'@}u |  
/** -5.>9+W8I  
* @author treeroot j&8U:Q,  
* @since 2006-2-2 B^eea[  
* @version 1.0 +1e*>jE  
*/ g-6!+>w*>e  
public class InsertSort implements SortUtil.Sort{ 2-2'c?%  
? [ =P  
/* (non-Javadoc) yp8 .\.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cLamqZf3  
*/ MECR0S9  
public void sort(int[] data) { 7 0KZXgBy_  
int temp; rsrv1A=t?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .3$iOMCH  
} N#|c2n+  
} /bg8oB4  
} $U!w#|&  
75<E0O  
} u K 8 r  
y![h  
冒泡排序: d@`yRueWiV  
9n$$D;  
package org.rut.util.algorithm.support; !1|f,9C  
AX[/S8|6  
import org.rut.util.algorithm.SortUtil; =$f xK  
7v1}8Uk  
/** %Sj;:LC  
* @author treeroot z^ ~fVl  
* @since 2006-2-2 0M pX.0  
* @version 1.0 (gz|6N  
*/ V5R``T p  
public class BubbleSort implements SortUtil.Sort{ sd Z=3)  
#~nI^ ggW  
/* (non-Javadoc) 8> Gp #T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IgZX,4i=o  
*/ AQ@A$  
public void sort(int[] data) { L[<MBgF Kv  
int temp; /ZX8gR5x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @ -g^R4e<  
if(data[j] SortUtil.swap(data,j,j-1); v^JyVf>  
} :'#B U:  
} Xo }w$q5  
} 9v0f4Pbxm  
} RDk{;VED{  
bMf +/n  
} WF_G GF{  
m&b!\"0  
选择排序: Onby=Y o6  
n8J';F =P  
package org.rut.util.algorithm.support; Z5_MSPm  
Kq{9 :G  
import org.rut.util.algorithm.SortUtil; (eG#JVsm9  
7vgz=- MZ#  
/** lLo FM  
* @author treeroot  XW`&1qx  
* @since 2006-2-2 4d[:{/+Q  
* @version 1.0 mLKwk6I  
*/ Pqx=j_st  
public class SelectionSort implements SortUtil.Sort { \/lH]u\x  
Wv$e/N`l  
/* dAohj QH:  
* (non-Javadoc) O" n/.`  
* :8Mp SvCV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !)KX?i[Q  
*/ &&TQ0w&T  
public void sort(int[] data) { MZ6?s(mkx  
int temp; L)4TW6IUk  
for (int i = 0; i < data.length; i++) { &\`=}hB  
int lowIndex = i; &`0heJ 5Yn  
for (int j = data.length - 1; j > i; j--) { N^CD4l  
if (data[j] < data[lowIndex]) { /3'>MRzR  
lowIndex = j; WZ;f3 "  
} .u)Po;e`  
} E.4`aJ@>d  
SortUtil.swap(data,i,lowIndex); Q_qc_IcM y  
} mp%i(Y"vp  
} o1-Zh!*a*  
<JDkvpckx.  
} Z3T:R"l;  
|Zncr9b  
Shell排序: eB^:+h#A_  
8xZN4ck_@  
package org.rut.util.algorithm.support; lRX*\ M\`  
&-s!ko4z  
import org.rut.util.algorithm.SortUtil; [uW{Ap~2  
@tRq(*(/:  
/** :1s6h%evrT  
* @author treeroot .pr-  ^  
* @since 2006-2-2 p8Ts5n  
* @version 1.0 WwPfz<I  
*/ gfFP-J3cN  
public class ShellSort implements SortUtil.Sort{ x^;nQas;  
\HV%579  
/* (non-Javadoc) dEJ>8e8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %dKUB4  
*/ ,=R->~ J  
public void sort(int[] data) { % )?$82=2  
for(int i=data.length/2;i>2;i/=2){ LH3PgGi,  
for(int j=0;j insertSort(data,j,i); =0MW+-  
} LezM=om.  
} [D^KM|I%+  
insertSort(data,0,1);  5!NK  
} YSs9BF:a  
Ks{^R`O au  
/** XW%!#S&;X  
* @param data w-"o?;)a  
* @param j Y*dzoN.sW  
* @param i ^kzw/. I{  
*/ Yhb=^)@))  
private void insertSort(int[] data, int start, int inc) { CT6a  
int temp; AJI,>I,}}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); e{>X2UNW  
} =pF 6  
} "P~0 7  
} BI3Q~ADV  
ix=HLF-0zC  
} GBGGV#_q'}  
r ~si:?6:  
快速排序: CZS{^6Ye  
0~<d<a -@  
package org.rut.util.algorithm.support; ;%"UZ~]f  
%S]H  
import org.rut.util.algorithm.SortUtil; e #> wv]V  
#e((F,1z  
/** Wt"fn&R}  
* @author treeroot $21+6  
* @since 2006-2-2 ik=~`3Zp0  
* @version 1.0 1l"A7 V  
*/ *Sm$FMWQ  
public class QuickSort implements SortUtil.Sort{ \H!E CTI  
z)='MKrEt-  
/* (non-Javadoc) !?`5r)K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;\DXRKR  
*/ ++W_4 B!  
public void sort(int[] data) { U N1HBW;  
quickSort(data,0,data.length-1); j{?,nJdQ  
} Xm8 1axyf  
private void quickSort(int[] data,int i,int j){ .cdm@_Ls  
int pivotIndex=(i+j)/2; 9[N+x2q  
file://swap {w$1_GU  
SortUtil.swap(data,pivotIndex,j); jhr{JApbJv  
C\Qor3];  
int k=partition(data,i-1,j,data[j]); lpQsmd#  
SortUtil.swap(data,k,j); L1D{LzlBti  
if((k-i)>1) quickSort(data,i,k-1); b*LEoQSl0V  
if((j-k)>1) quickSort(data,k+1,j); >:%i,K*AM  
M;V (Tf  
} *A':^vgk  
/** 6q RZ#MC  
* @param data I8;pMr6  
* @param i Ad xCP\S&  
* @param j  O;h]  
* @return (9]`3^_,J  
*/ ,R5NKWo  
private int partition(int[] data, int l, int r,int pivot) { <7fF9X  
do{ ]1>U@oK  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :A%uXgK<k  
SortUtil.swap(data,l,r); TBHIcX  
} eN fo8xUG  
while(l SortUtil.swap(data,l,r); b*S :wfw  
return l; ,'?%z>RZm  
} ER~m &JI  
4J Bm|Pf(  
} >Ip>x!wi  
Qctm"g|  
改进后的快速排序: =|O`al  
`X'-4/Y  
package org.rut.util.algorithm.support; !Sx }~XB<  
B.vg2N  
import org.rut.util.algorithm.SortUtil; :j)H;@[I  
S^? @vj  
/** ?}\aG3_4  
* @author treeroot ( >zXapb2  
* @since 2006-2-2 /bv `_ >  
* @version 1.0 -H5n>j0!{  
*/ Wu(6FQ`H  
public class ImprovedQuickSort implements SortUtil.Sort { -&I%=0q  
w-*$gk]   
private static int MAX_STACK_SIZE=4096; 4SIi<cS0  
private static int THRESHOLD=10; R}IMX9M=  
/* (non-Javadoc) Wly-z$\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mO;X>~K  
*/ t<mT=(zt*  
public void sort(int[] data) { %p6"Sg*  
int[] stack=new int[MAX_STACK_SIZE]; [,e[~J`C  
m:CiXM   
int top=-1; i$gm/ZO  
int pivot; ,7,x9qE"  
int pivotIndex,l,r; 'yxRz5  
O3WhO@`6)  
stack[++top]=0; 0Aw.aQ~E8i  
stack[++top]=data.length-1; zc>/1>?M  
VRurn>y0  
while(top>0){ 4vKp341B  
int j=stack[top--]; Bh$ hgf.C  
int i=stack[top--]; 0i/l2&x*k]  
??0C"8:[  
pivotIndex=(i+j)/2; vY0C(jK  
pivot=data[pivotIndex]; Cg<:C?>!p  
/{Ksi+q  
SortUtil.swap(data,pivotIndex,j); 25]Mi2_  
G{ ~pA4  
file://partition 0 1<~~6A  
l=i-1; 12BTZ  
r=j; 0j\?zt?  
do{ Se7NF@>9_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W}p>jP}  
SortUtil.swap(data,l,r); 1^ZQXUzl%i  
} &0Yv*,4]  
while(l SortUtil.swap(data,l,r); |3`Sd;^;  
SortUtil.swap(data,l,j); #ak2[UOT  
i lk\&J~I  
if((l-i)>THRESHOLD){ 5m{!Rrb  
stack[++top]=i; 8##-fv]  
stack[++top]=l-1; ]o`qI#{R~R  
} ~&B{"d  
if((j-l)>THRESHOLD){ CKwrE]h  
stack[++top]=l+1; &.D3f"  
stack[++top]=j; MT9c:7}[&  
} M7!>-P  
%>B?WR\yE  
} -02c I}e  
file://new InsertSort().sort(data); gp'9Pf;\[  
insertSort(data); I} a`11xb`  
} k?ubr)[)  
/** +InAK>NZ'  
* @param data x LR 2H>B}  
*/ Ex2TV7I  
private void insertSort(int[] data) { <+@?V$&  
int temp; +M-x*;.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZlD\)6 dZ  
} C%#=@HC  
} /4{ 6`  
} V)#se"GV  
lj0"2@z3"E  
} VL= .JwK  
;1PnbU b  
归并排序: _V\rs{ 5  
#T:#!MKa  
package org.rut.util.algorithm.support; Y^DS~CrM  
d#E]>:w9  
import org.rut.util.algorithm.SortUtil; 5VI c  
{`5Sh1b  
/** h.CbOI%Q  
* @author treeroot Wm>[5h%>  
* @since 2006-2-2 @b[{.m U  
* @version 1.0  x~p8Mcv  
*/ Im7<\ b@  
public class MergeSort implements SortUtil.Sort{ 'F>eieO  
"]h4L  
/* (non-Javadoc) ParOWs~W/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6)63Yp(  
*/ [r,a0s  
public void sort(int[] data) { fa7Z=:a G  
int[] temp=new int[data.length]; hbm%{*d  
mergeSort(data,temp,0,data.length-1); L&V;Xvbu%  
} 70bI}/u  
d l_ h0  
private void mergeSort(int[] data,int[] temp,int l,int r){ {"|P  
int mid=(l+r)/2; OI0#@_L&  
if(l==r) return ; 2z9\p%MX  
mergeSort(data,temp,l,mid); IsjxD|u  
mergeSort(data,temp,mid+1,r); PqV9k,5f  
for(int i=l;i<=r;i++){ V|GH4DT=  
temp=data; I^erMQn[ z  
} Fm}#KE0  
int i1=l; LV|ZZ.d h  
int i2=mid+1; faQ}J%a  
for(int cur=l;cur<=r;cur++){ qgREkb0  
if(i1==mid+1) XFpII4 5  
data[cur]=temp[i2++]; )yvI  {  
else if(i2>r) c'M#va  
data[cur]=temp[i1++]; #x-@ >{1k&  
else if(temp[i1] data[cur]=temp[i1++];  1@Abs  
else +vOlA#t%Z  
data[cur]=temp[i2++]; w#]> Nf  
} Hl`S\  
} tPu0r],`o  
sb"z=4  
} So>P)d$8+  
IvuKpX>*  
改进后的归并排序: ny# ?^.1  
}  IJ  
package org.rut.util.algorithm.support; 9))E\U  
_BGw)Z 6  
import org.rut.util.algorithm.SortUtil; 7)&}riQ  
_'pow&w~  
/** $="t7C9S  
* @author treeroot 2R9AYI  
* @since 2006-2-2 533n z8&9@  
* @version 1.0 ~uqpF-.  
*/ WAr;g?Q8  
public class ImprovedMergeSort implements SortUtil.Sort { t^eWFX  
"|P8L| @*  
private static final int THRESHOLD = 10; irj{Or^k  
g/Q"%GN,  
/* B*=m%NXf  
* (non-Javadoc) #[ZF'9x  
* Ik[aiz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ay?KE{Qs '  
*/ B \?We\y  
public void sort(int[] data) { &o{=  
int[] temp=new int[data.length]; ~ *:{U   
mergeSort(data,temp,0,data.length-1); -|E|-'  
} 0($@9k4!/  
! 6y<jJ>  
private void mergeSort(int[] data, int[] temp, int l, int r) { &!/E&e$_  
int i, j, k; "rhU2jT=c  
int mid = (l + r) / 2; A4 ;EtW+F  
if (l == r) z&fXxp  
return; qm RdO R  
if ((mid - l) >= THRESHOLD) u!kC+0Y  
mergeSort(data, temp, l, mid); :[icd2JCw]  
else ,w>WuRN"  
insertSort(data, l, mid - l + 1); mqw5\7s?  
if ((r - mid) > THRESHOLD) hf5yTs  
mergeSort(data, temp, mid + 1, r); 80qSPitj  
else VVY#g%(K  
insertSort(data, mid + 1, r - mid); n-X;JYQW  
[C1 .*Q+l  
for (i = l; i <= mid; i++) { 2R}9wDP  
temp = data; <{$0mUn;s|  
} P#e1?  
for (j = 1; j <= r - mid; j++) { M#<U=Ha  
temp[r - j + 1] = data[j + mid]; <'s_3AC  
} 8?p40x$m%  
int a = temp[l]; " S8JHHx  
int b = temp[r]; ,-!h  
for (i = l, j = r, k = l; k <= r; k++) { yb 7  
if (a < b) { &.dC%  
data[k] = temp[i++]; y3!r;>2k=  
a = temp; Fk&W*<}/;  
} else { 5Q_ T=TL  
data[k] = temp[j--]; 4sU*UePr  
b = temp[j]; j?!BHNs  
} ~Sq!P  
}  :{#%_^}k  
} \}CQo0v  
|%wgux`z  
/** lqD.epm  
* @param data t9zPUR  
* @param l f~U~f}Uw4  
* @param i AH*{Bi[vX  
*/ l,z# : k  
private void insertSort(int[] data, int start, int len) { Xz/5 Wis4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z^@.b  
} IZr~h9  
} [VvTR#^  
} 7d9kr?3(U  
} &G#LQl  
3Z,J &d`[  
堆排序: W6N3u7mrb  
'. Ww*N  
package org.rut.util.algorithm.support; aQ@9(j> F  
l/=2P_8+Z  
import org.rut.util.algorithm.SortUtil; x2-i1#j`;  
G8]DK3#  
/** j$2rU'  
* @author treeroot cJ CKxj  
* @since 2006-2-2 +ZuT\P&kR5  
* @version 1.0 I+qg'mo  
*/ :0G_n\  
public class HeapSort implements SortUtil.Sort{ u\L=nCtLby  
4!%@{H`3  
/* (non-Javadoc) yr4j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g43j-[j)  
*/ ,tt .oF|  
public void sort(int[] data) { 5m.{ayE  
MaxHeap h=new MaxHeap(); N^G $:GC  
h.init(data); _(#HQd,i  
for(int i=0;i h.remove(); <K^{36h  
System.arraycopy(h.queue,1,data,0,data.length); H C %tJ:G  
} ll]MBq  
KKrLF?rc  
private static class MaxHeap{ Z%h _g-C  
[ " n+2;  
void init(int[] data){ +[LG>  
this.queue=new int[data.length+1]; U;o$=,_p  
for(int i=0;i queue[++size]=data; bn$('  
fixUp(size); z%lu%   
} 'hEvW  
} [r[IWy(}  
.f1  
private int size=0; }OQaQf9V{  
U9?fUS  
private int[] queue; % oPt],>  
{P'_s ]B)  
public int get() { 5y 9(<}z  
return queue[1]; A* 1-2  
} /G{;?R  
{B!LhvYAH  
public void remove() { H@+1I?l  
SortUtil.swap(queue,1,size--); *En29N#a{  
fixDown(1); 7H$I9e  
} [uJfmrEH  
file://fixdown 6MewQ{hi  
private void fixDown(int k) { fGeDygV^`  
int j; y4@zi"G  
while ((j = k << 1) <= size) { E{LLxGAEZ  
if (j < size %26amp;%26amp; queue[j] j++; oFO)28Btv  
if (queue[k]>queue[j]) file://不用交换 r JvtE}x1  
break; \wJ2>Q  
SortUtil.swap(queue,j,k); iMT[s b  
k = j; Yk;-]qi7  
} )bd)noZi  
} R6(sWN-  
private void fixUp(int k) { \ F\ /<  
while (k > 1) { &:>3tFQSH  
int j = k >> 1; O c[F  
if (queue[j]>queue[k]) Nldy76|g  
break; D(E3{\*R  
SortUtil.swap(queue,j,k); Ipp#{'Do  
k = j; {^5LolCCH  
} $wr B5m?  
} 6#J>b[Q  
6-fdfU  
} Rudj"OGO  
>3C4S  
} %Tv2op  
 46^9O 5J  
SortUtil: vvTQ!Aa  
|Ix{JP"Lk  
package org.rut.util.algorithm; '%H\ k5^  
g3Xa b  
import org.rut.util.algorithm.support.BubbleSort; 3)6TnY/u6{  
import org.rut.util.algorithm.support.HeapSort; 9a6ij*#  
import org.rut.util.algorithm.support.ImprovedMergeSort;  ?W3l  
import org.rut.util.algorithm.support.ImprovedQuickSort; h 7P<3m}  
import org.rut.util.algorithm.support.InsertSort; !y$:}W?_  
import org.rut.util.algorithm.support.MergeSort; TQ,KPf$0U  
import org.rut.util.algorithm.support.QuickSort; <hV%OrBz-  
import org.rut.util.algorithm.support.SelectionSort; mA?fCs  
import org.rut.util.algorithm.support.ShellSort; l%_r3W  
; u@& [  
/** *QGyF`Go{  
* @author treeroot R<L<kChg  
* @since 2006-2-2 x 8/I"!gI  
* @version 1.0 LmZ"_  
*/ 0| }]=XN^  
public class SortUtil { "c5bz  
public final static int INSERT = 1; 61@;3yV  
public final static int BUBBLE = 2; pBxyq"z  
public final static int SELECTION = 3; W5^<4Ya!  
public final static int SHELL = 4; iW9o-W a  
public final static int QUICK = 5; fvi8+3A&  
public final static int IMPROVED_QUICK = 6; 4lF(..Ix  
public final static int MERGE = 7; rqi/nW  
public final static int IMPROVED_MERGE = 8; FK+`K<  
public final static int HEAP = 9; s=H| ^v  
8#{DBWU  
public static void sort(int[] data) { _C%:AFPP>  
sort(data, IMPROVED_QUICK); Xl %ax!/  
} ?'IY0^  
private static String[] name={  Tb[1\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z[sP/{~z  
}; k9_c<TSzu  
Ncr*F^J4  
private static Sort[] impl=new Sort[]{ lDX\"Fq  
new InsertSort(), _/5#A+ ?  
new BubbleSort(), SjL&\),  
new SelectionSort(), ?/1Eu47  
new ShellSort(), 1PUeU+  
new QuickSort(), *DcB?8%  
new ImprovedQuickSort(), KNG7$icG  
new MergeSort(), M(Tlkr  
new ImprovedMergeSort(), 61~7 L^882  
new HeapSort() Fd;%wWY.zm  
}; ]ft}fU5C1  
_ *.ImD  
public static String toString(int algorithm){ )gHfbUYS  
return name[algorithm-1]; )?MUUI:  
} NiSH$ MJ_  
[vTk*#Cl4  
public static void sort(int[] data, int algorithm) { ~wFiq)v(  
impl[algorithm-1].sort(data); 7t3ps  
} DLH|y%"  
EXEB A&*  
public static interface Sort { 4de:hE   
public void sort(int[] data); !Z!X]F-fY  
} j[${h, p?  
KQTv5|$?  
public static void swap(int[] data, int i, int j) { mXOY,g2w  
int temp = data; U}R (  
data = data[j]; ( u^`3=%n  
data[j] = temp; x~u"KU2B  
} ^N&@7s  
}  X]4j&QB  
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