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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。 K'zBDrkW-x  
插入排序: (&oT6Ji  
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package org.rut.util.algorithm.support; ey ?paT  
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import org.rut.util.algorithm.SortUtil; nV>=n,+s"  
/** 0ra+MQBg  
* @author treeroot I7?s+vyds  
* @since 2006-2-2 s&D>'J  
* @version 1.0 :~LOw}N!aQ  
*/ Po7oo9d  
public class InsertSort implements SortUtil.Sort{ )Kg _E6  
m?O"LGBB =  
/* (non-Javadoc) XT{o ]S~nq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wf>=^ ~`  
*/ 2^ kK2D$o  
public void sort(int[] data) { I!Uj~jV  
int temp; |v@ zyOq&b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Dfw%Bu  
} K(heeZUt  
} [5wU0~>'  
} m:5x"o7)ln  
TykY>cl   
} KYC<*1k  
t&nK5p95(  
冒泡排序: b0h>q$b  
`V=F>s$W  
package org.rut.util.algorithm.support; Oi$$vjs2  
C`b)}dY  
import org.rut.util.algorithm.SortUtil; gM_MK8py  
}-%:!*bLj  
/** i?IV"*Ob1N  
* @author treeroot mL3 Q  
* @since 2006-2-2 3Nk )  
* @version 1.0 U~_G *0  
*/ ?Suv.!wfLl  
public class BubbleSort implements SortUtil.Sort{ E#/vgm=W;  
I^!c1S  
/* (non-Javadoc) tN-B`d 1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7-2,|(Xg  
*/ <-N7Skkk!  
public void sort(int[] data) { &D#B"XI  
int temp; yYPFk  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }080=E  
if(data[j] SortUtil.swap(data,j,j-1); *(j -jbA  
} "J*LR  
} 7YQ689"J6B  
} b_GAK  
} '[Z.\   
b*dEX%H8sf  
} dZ"d`M>o6  
DP=\FG"}x  
选择排序: &C.m*^`^  
?oulQR6:  
package org.rut.util.algorithm.support; 0&2eiMKG?n  
Q)ZbnR2Z8  
import org.rut.util.algorithm.SortUtil; %lqrq<Xn  
_0!<iN L  
/** [J+]1hCZ|  
* @author treeroot "Tc[1{eI  
* @since 2006-2-2 M =6  
* @version 1.0 E9#.!re|^  
*/ g0 Jy:`M  
public class SelectionSort implements SortUtil.Sort { z:p9&mi  
U?(+ {4l  
/* ^|lG9z%Foy  
* (non-Javadoc) 6M X4h  
* ~[`*)(4E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .MI 5?]_  
*/ am# (ms  
public void sort(int[] data) { W;ADc2#)  
int temp; %\?Gzc_  
for (int i = 0; i < data.length; i++) {  q a}=p  
int lowIndex = i; ~)%DiGW&  
for (int j = data.length - 1; j > i; j--) { t0+D~F(g  
if (data[j] < data[lowIndex]) { ^ Mw=!n[  
lowIndex = j; q-4#)EnW  
} T8\%+3e.  
} # PZBh  
SortUtil.swap(data,i,lowIndex); HFTDea+#  
} TDY =!  
} '^~3 8=FA  
+8|r_z\A5a  
} Wm>AR? b  
*[0)]|r  
Shell排序: hnnPi  
brClYpp,h  
package org.rut.util.algorithm.support; VDC"tSQ  
{6 brVN.V  
import org.rut.util.algorithm.SortUtil; }I ^e:,{  
jW0aIS2O  
/** YV"LM6`  
* @author treeroot ">rt *?^  
* @since 2006-2-2 O:Ob{k  
* @version 1.0 w"?E=RS  
*/ `)_11ywZ  
public class ShellSort implements SortUtil.Sort{ iYl$25k/1  
@d_;p<\l  
/* (non-Javadoc) V9<CeTl'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (]*!`(_b  
*/ v m)'C C  
public void sort(int[] data) { HK!Vd_&9,  
for(int i=data.length/2;i>2;i/=2){ Y~uqKb;A  
for(int j=0;j insertSort(data,j,i); v9+1[Y";  
} ?KtvXTy{m  
} <nE|Y@S  
insertSort(data,0,1); <n|.Z-gF\  
} Q5pm^X._j  
jN^09T49  
/** j aq/]I7  
* @param data ljRR{HOl  
* @param j TM1J1GU  
* @param i N6*v!M+  
*/ .W q"  
private void insertSort(int[] data, int start, int inc) { <|_b:  
int temp; :z}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); M}W};~V2ng  
} VKXZA2<?'  
} DsH`I %w{  
} `-[+(+["  
8GFA}_(^R  
} ZeY kZzN  
sKuPV  
快速排序: }^ G&n';J  
_HkB+D0v  
package org.rut.util.algorithm.support; B^sHFc""V  
9\[A%jp#K@  
import org.rut.util.algorithm.SortUtil;  gC}D0l[  
'P5|[du+  
/** kFF)6z:2  
* @author treeroot W_z?t;  
* @since 2006-2-2 ^7&0P m  
* @version 1.0 yyVv@  
*/ 2gbMUdpp  
public class QuickSort implements SortUtil.Sort{ ~TEKxgU  
w=S7zzL)  
/* (non-Javadoc) /]*#+;;%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A`qb5LLJ)  
*/ 2e @zd\  
public void sort(int[] data) { $>mTPNF  
quickSort(data,0,data.length-1); 8GD!]t#  
} ]VS$ ?wD  
private void quickSort(int[] data,int i,int j){ fG\]&LFBU  
int pivotIndex=(i+j)/2; hV4\#K[  
file://swap Mb0cdK?hA  
SortUtil.swap(data,pivotIndex,j); ljo^ 2  
2eh j2T  
int k=partition(data,i-1,j,data[j]); 3U73_=>=&  
SortUtil.swap(data,k,j); 9p5{,9.3*  
if((k-i)>1) quickSort(data,i,k-1); Cq,hzi-  
if((j-k)>1) quickSort(data,k+1,j); >4}2~;  
WxF rqUz  
} #Zy-X_r  
/** DG $._  
* @param data d^<a)>5h  
* @param i ,Cckp! 6  
* @param j KGI0|Z]n~  
* @return 7VwLyy  
*/ P"WnU'+  
private int partition(int[] data, int l, int r,int pivot) { h.W;Dmf6]  
do{ );.q:"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d.3O1TXK  
SortUtil.swap(data,l,r); 6hs2B5)+  
} j!H\hj/]  
while(l SortUtil.swap(data,l,r); n/3gx4.g  
return l; t"@: a Y"  
} _,M:"3;Z  
(mJqI)m8  
} H.ZmLB  
,~_)Cf#CB  
改进后的快速排序: (]mh}=:KDg  
@Pc]qu  
package org.rut.util.algorithm.support; l&d 6G0  
6QOdd 6_d  
import org.rut.util.algorithm.SortUtil; y'<juaw  
3=r8kh7,  
/** |ei?s1)  
* @author treeroot aQEMCWxZ  
* @since 2006-2-2 J0U9zI4  
* @version 1.0 @lP<Mq~]  
*/ [[PUK{P0  
public class ImprovedQuickSort implements SortUtil.Sort { Eqg(U0k0  
d&p]O  
private static int MAX_STACK_SIZE=4096; aO]0|<2 j  
private static int THRESHOLD=10; kxg]sr"  
/* (non-Javadoc) a9q68  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wOy1i/oj  
*/ y^gazr"  
public void sort(int[] data) { k]Y#-Q1p~  
int[] stack=new int[MAX_STACK_SIZE]; ul e]eRAG  
F%Lniv/N  
int top=-1; Ha\q}~_  
int pivot; qYW{$K  
int pivotIndex,l,r; w 1E}F  
_= _]Yx  
stack[++top]=0; *Bt`6u.>e,  
stack[++top]=data.length-1; /AR;O4X+  
q($lL~Ls  
while(top>0){ Xz=MM0o  
int j=stack[top--]; w49Wl>M  
int i=stack[top--]; b\ %=mN  
OH28H),}  
pivotIndex=(i+j)/2; &DFe+y~PR  
pivot=data[pivotIndex]; -P5VE0  
S #X$QD  
SortUtil.swap(data,pivotIndex,j); 2oAPJUPOJ  
^ b`}g  
file://partition x,js}Mlw  
l=i-1; sa`7_KB  
r=j; $.}fL;BzVz  
do{ ih?_ fW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^)b*"o  
SortUtil.swap(data,l,r); !+.|T9P  
} w.cQ|_  
while(l SortUtil.swap(data,l,r); /c`)Er 6d  
SortUtil.swap(data,l,j); Y]b5qguK  
OxqbHe  
if((l-i)>THRESHOLD){ L;xc,"\3  
stack[++top]=i; yg "u^*r&  
stack[++top]=l-1; Etj*3/n|  
} I C9:&C[  
if((j-l)>THRESHOLD){ B7TA:K  
stack[++top]=l+1; 2C %{A  
stack[++top]=j; Y$EqBN  
} RC8{QgaI  
*&B*/HAN  
} :x97^.eW~  
file://new InsertSort().sort(data); bG>pm|/  
insertSort(data); kF~}htv.=  
} qyc:;3?wm  
/** |Gjd  
* @param data nD.4c-hd$q  
*/ @.-g  
private void insertSort(int[] data) { f& (u[W  
int temp; ;tI=xNre`1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); FpfOxF6A3  
} # 3uXgZi  
} Nm<3bd  
} Rcf_31 L  
W k'()N  
} K2L+tw  
T"t3e=xA  
归并排序: +J$[RxQ#  
'@HWp8+  
package org.rut.util.algorithm.support; s_K:h  
[e ;K$  
import org.rut.util.algorithm.SortUtil; :n>m">4  
XN]kNJX  
/** :SSe0ZZ_6b  
* @author treeroot K|Std)6  
* @since 2006-2-2 /wI$}X5o~  
* @version 1.0 p0uQ>[NV0  
*/ Aa.bE,W  
public class MergeSort implements SortUtil.Sort{ V_!hrKkL  
Gy 'l;2  
/* (non-Javadoc) hkv&Od,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,a< !d  
*/ 8:-[wl/@  
public void sort(int[] data) { J}KATpHs  
int[] temp=new int[data.length]; w*Sl  
mergeSort(data,temp,0,data.length-1); E<'3?(D9hL  
} /l0\SVwa>  
Ve7[U_"  
private void mergeSort(int[] data,int[] temp,int l,int r){ >t?;*K\x"  
int mid=(l+r)/2; A[;R_  
if(l==r) return ; (C,PGjd  
mergeSort(data,temp,l,mid); V?HC\F-  
mergeSort(data,temp,mid+1,r); O} QTg  
for(int i=l;i<=r;i++){ 2M= gpy  
temp=data; ,/|"0$p2x  
} Q9X_aB0  
int i1=l; WU{G_Fqaz  
int i2=mid+1; sBq @W4  
for(int cur=l;cur<=r;cur++){ qJVW :$1q  
if(i1==mid+1) <"AP&J'H  
data[cur]=temp[i2++]; J^ryUO o}b  
else if(i2>r) ,S:LhgSP  
data[cur]=temp[i1++]; Fc7mAV=  
else if(temp[i1] data[cur]=temp[i1++]; @xB"9s  
else kfg9l?R$I<  
data[cur]=temp[i2++]; vz,l{0 v  
} .'p_j(uv  
} +l2{EiQw  
<y\>[7Y  
} L$l'wz  
G*mk 19Z  
改进后的归并排序: [$]vi`c2  
d;9 X1`"  
package org.rut.util.algorithm.support; a*NcL(OC  
&I:5<zK{  
import org.rut.util.algorithm.SortUtil; %-i2MK'A  
4{X5ZS?CkI  
/** 5)2lZ(5.A#  
* @author treeroot zy8W8h(?  
* @since 2006-2-2 +I5@Gys  
* @version 1.0 eL#pS=  
*/ R.!'&<Svq  
public class ImprovedMergeSort implements SortUtil.Sort { -j`tBv)  
5"c#O U  
private static final int THRESHOLD = 10; :U0z;  
HzF  
/* B~V^?."  
* (non-Javadoc) 41^+T<+  
* 7<mY{!2iF?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h:<p EL  
*/ !BP/#  
public void sort(int[] data) { 60*2k  
int[] temp=new int[data.length]; Aj;Z &  
mergeSort(data,temp,0,data.length-1); !TVlsm  
} F# y5T3(P  
zdzTJiY2[Z  
private void mergeSort(int[] data, int[] temp, int l, int r) { \e T0d<  
int i, j, k; Im+<oZ  
int mid = (l + r) / 2; TPt<(-}W  
if (l == r) /^G1wz2  
return; OSK 3X Qc  
if ((mid - l) >= THRESHOLD) AwAUm 2^  
mergeSort(data, temp, l, mid); `!kOyh:X  
else CQW#o_\  
insertSort(data, l, mid - l + 1); {l%Of  
if ((r - mid) > THRESHOLD) ,H2[["1DH  
mergeSort(data, temp, mid + 1, r);  [:  
else i!LEA/"V  
insertSort(data, mid + 1, r - mid); Z[R E|l{  
=[FNZ:3  
for (i = l; i <= mid; i++) { :,Q\!s!  
temp = data; ly7\H3  
} "H" 4(3  
for (j = 1; j <= r - mid; j++) { ;x$,x-  
temp[r - j + 1] = data[j + mid]; Jv %, v?  
} \ty{KAc&  
int a = temp[l]; b<P9@h~:  
int b = temp[r]; Q.>@w<[!L  
for (i = l, j = r, k = l; k <= r; k++) { <[@AMdS  
if (a < b) { )/1AF^ E  
data[k] = temp[i++]; >u ,Ac:  
a = temp; xqs{d&W  
} else {  ztKmB  
data[k] = temp[j--]; [ma'11?G  
b = temp[j]; WolkW:(Cg  
} :Gsh  
} [KLs} ~H  
} d`5xd@p  
KaNi'=nW  
/** PxNp'PZr9  
* @param data --4,6va`e  
* @param l 3s<~}&"  
* @param i zt/b S/  
*/ ?'Y\5n/*$  
private void insertSort(int[] data, int start, int len) { Ly"u }e  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); eY)ugq>'  
} pwtB{6)VH{  
} oDogM`T`  
} {`2! 3= "  
} T!0o(Pp<  
rkugV&BhV  
堆排序: )y4bb^;z  
ON.C%-T-  
package org.rut.util.algorithm.support; 3gV 17a  
XZD9vFj1Z  
import org.rut.util.algorithm.SortUtil; zePVB -@u  
2a|9D \  
/** As }:~Jy|  
* @author treeroot FNL[6.!PV  
* @since 2006-2-2 ?{[ ISk)  
* @version 1.0 M{cF14cQ  
*/ tPBr{  
public class HeapSort implements SortUtil.Sort{ _y*@Hj  
Mrysy)x  
/* (non-Javadoc) %N$,1=0*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D!Pv`wm  
*/ v W=$C  
public void sort(int[] data) { HX%lL }E  
MaxHeap h=new MaxHeap(); F7P?*!dx  
h.init(data); KX D&FDkF  
for(int i=0;i h.remove(); M3P\1  
System.arraycopy(h.queue,1,data,0,data.length); yB0xa%  
} 3tzb@T  
.sI*\@w.  
private static class MaxHeap{ Yef=HSzo  
}%Mj`Bh  
void init(int[] data){ <qJI]P  
this.queue=new int[data.length+1]; FcVQ_6  
for(int i=0;i queue[++size]=data; P'%#B&LZo  
fixUp(size); dO]N&'P7  
} R+{QZ'K.qg  
} {w:*t)@j  
U4)x"s[CP  
private int size=0; :0@R(ct;>  
H@Yj  
private int[] queue; @`R#t3)8JP  
KZrg4TEVi  
public int get() { a,mG5bQ!  
return queue[1]; r&  
} .TZ0F xW  
S:2M9nC  
public void remove() { _=0%3Sh  
SortUtil.swap(queue,1,size--); )45~YDS;t  
fixDown(1); cHo@F!{o=  
} NZT2ni4  
file://fixdown WV5z~[  
private void fixDown(int k) { #J=^CE  
int j; v~E\u  
while ((j = k << 1) <= size) { )S?.YCv?  
if (j < size %26amp;%26amp; queue[j] j++; 6d~[j <@2  
if (queue[k]>queue[j]) file://不用交换 N{+6V`\  
break; :&SvjJR  
SortUtil.swap(queue,j,k); p G|-<6WY  
k = j; ~EIK  
} |Y|6`9;  
} QAGR\~  
private void fixUp(int k) { cPaz-  
while (k > 1) { 9dS<^E(ZF  
int j = k >> 1; cdd6*+E  
if (queue[j]>queue[k]) 3oD?e  
break; Rhi`4wo0$  
SortUtil.swap(queue,j,k); ?e=3G4N  
k = j; oF'_x,0  
} pQ~Y7  
} @M( hyS&on  
s Zn@ye^  
} N"/J1   
Pgug!![  
} `U4e]Qh/+  
{7d(B1[1  
SortUtil: 1fgO3N  
i ZU 1w7Z  
package org.rut.util.algorithm; unX mMSz(  
pW4O[v`  
import org.rut.util.algorithm.support.BubbleSort; xWRkg$A  
import org.rut.util.algorithm.support.HeapSort; T-MC|>pv  
import org.rut.util.algorithm.support.ImprovedMergeSort; FYBW3y+AF&  
import org.rut.util.algorithm.support.ImprovedQuickSort; % 9 Jx|  
import org.rut.util.algorithm.support.InsertSort; >wSrllmj@  
import org.rut.util.algorithm.support.MergeSort; ! 2=m |,  
import org.rut.util.algorithm.support.QuickSort; GN1Q\8)o  
import org.rut.util.algorithm.support.SelectionSort; %Z~0vwY  
import org.rut.util.algorithm.support.ShellSort; &VPfI  
(#e,tu  
/** ,"e n7  
* @author treeroot 7a0T]  
* @since 2006-2-2 c"*xw8|  
* @version 1.0 ]g] ]\hS  
*/ }BYs.$7  
public class SortUtil { . E8Gj'yO  
public final static int INSERT = 1; DXF>#2E^+  
public final static int BUBBLE = 2; My6a.Kl  
public final static int SELECTION = 3; .gQYN2#zb  
public final static int SHELL = 4; aU\R!Y$/"  
public final static int QUICK = 5; f]sc[_n]  
public final static int IMPROVED_QUICK = 6; \wR;N/tg  
public final static int MERGE = 7; '@6O3z_{  
public final static int IMPROVED_MERGE = 8; S =5br  
public final static int HEAP = 9; 3g79/ w  
%+pF4f8]  
public static void sort(int[] data) { _-=yD@;[D  
sort(data, IMPROVED_QUICK); _^ZBSx09)  
} 5ho!}K  
private static String[] name={ c)`=wDi  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,7:? Du}  
}; ee2k..Tq#  
\+Nn>wW.  
private static Sort[] impl=new Sort[]{ -3GlpC22  
new InsertSort(), `; +UWdAR  
new BubbleSort(), "?AJ(>wP  
new SelectionSort(), fphi['X   
new ShellSort(), /OD@Xl];K  
new QuickSort(), MV.&GUez{  
new ImprovedQuickSort(), 9P1!<6mN\  
new MergeSort(), Zdfruzl&`  
new ImprovedMergeSort(), ]Uj7f4)k  
new HeapSort() .;J6)h  
}; vu@@!cT6e  
[,yYr  
public static String toString(int algorithm){ @1vpkB~ w  
return name[algorithm-1]; )+ (GE  
} gmUX 2x(  
vqhu%ZyP  
public static void sort(int[] data, int algorithm) { _uL8TC ^  
impl[algorithm-1].sort(data); ^ *1hz<  
} 0/5{v6_rG  
d_1uv_P  
public static interface Sort { GIM'H;XG  
public void sort(int[] data); #O1%k;BL  
} mS?W+jy%  
dbG902dR  
public static void swap(int[] data, int i, int j) { G2 0   
int temp = data; ]?*'[  
data = data[j]; wh2Ljskda8  
data[j] = temp; b"JX6efnN  
} h+DK .$  
} c#zx" ,K  
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