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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。 d{) =E8wE  
插入排序: &gJ@"`r4  
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package org.rut.util.algorithm.support; w)1SZ }  
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import org.rut.util.algorithm.SortUtil; sSD&'K=lq  
/** b"`fS`@/MW  
* @author treeroot H@ty'z?  
* @since 2006-2-2 M?hPlo"_  
* @version 1.0 DT6 BFx  
*/ rM6S%rS  
public class InsertSort implements SortUtil.Sort{ {{[@ X  
pU,\ &3N  
/* (non-Javadoc) !=yO72dgLY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )te_ <W  
*/ 0}'/pN>  
public void sort(int[] data) { QwF.c28[  
int temp; p]Qe5@NT  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a9_2b}t  
} uC#] F@  
} p)"EenUK  
} u:J4Az^!  
kkj@!1q(wO  
} >yqEXx5{  
#)#'^MZX  
冒泡排序: (Ia:>ocE0  
HM"(cB(n`  
package org.rut.util.algorithm.support; RU=g|TL  
`/wXx5n5<  
import org.rut.util.algorithm.SortUtil; ~x_(v,NW  
xlgT1b:6  
/** p;R&h4H  
* @author treeroot {l_D+B;  
* @since 2006-2-2 ;eO Ye3;c  
* @version 1.0 rXip"uz(K>  
*/ S"87 <o  
public class BubbleSort implements SortUtil.Sort{ ?Iaqbt%2  
d4Y[}Fcp+  
/* (non-Javadoc) E)X_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #>BC|/P}  
*/ 2(e;pM2Dq  
public void sort(int[] data) { Y2 N$&]O{  
int temp; 9c1q:>|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ {4p7r7n'  
if(data[j] SortUtil.swap(data,j,j-1); $[J\sokpY  
} d)XT> &  
} _n4`mL8>kH  
} c\tw#;\9  
} Ls.g\Gl3  
BCd0X. m(  
} V2tA!II-s  
*]kE3  
选择排序: r.:f.AY{  
q?L*Luu+  
package org.rut.util.algorithm.support; ,pkzNe`F  
`fVzY"Qv k  
import org.rut.util.algorithm.SortUtil; cRf;7G  
p{SIGpbR&  
/** Esg:  
* @author treeroot |ZCv>8?n  
* @since 2006-2-2 P5"B7>L:  
* @version 1.0 Vt9o8naz  
*/ fKuaom9  
public class SelectionSort implements SortUtil.Sort { Q-U,1b  
D6e<1W  
/*  e+@.n  
* (non-Javadoc) :b#5 cMUe  
* kaDn= ={YM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1'B=JyR~K  
*/ xelh!AtE  
public void sort(int[] data) { 7FP"]\x  
int temp; _,-\;  
for (int i = 0; i < data.length; i++) { [~Z#yEiW^  
int lowIndex = i; _tO2PI L@Z  
for (int j = data.length - 1; j > i; j--) { %U1HvmyK  
if (data[j] < data[lowIndex]) { 0nlh0u8#  
lowIndex = j; z:{R4#(Q  
} :+ "JPF4X  
} A+3=OBpkW0  
SortUtil.swap(data,i,lowIndex); O9{A)b!HB  
} h 'is#X 6:  
} ^AUQsRA7PZ  
FOcDBCrOe  
} ab6D&  
Mq6_Q07  
Shell排序: ];0:aSi#  
EkN>5).  
package org.rut.util.algorithm.support; gJzS,g1]  
kaCn@$  
import org.rut.util.algorithm.SortUtil; W*4!A\K  
qEjsAL  
/** CR|>?9V  
* @author treeroot `R$bx 64  
* @since 2006-2-2 O}7aX '  
* @version 1.0 \l 3M\$oS>  
*/ `k08M)  
public class ShellSort implements SortUtil.Sort{ RWn#"~  
MpJx>0j/J  
/* (non-Javadoc) [@s5v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B_.>Q8tK;  
*/ / pR,l5  
public void sort(int[] data) { 'FN3r  
for(int i=data.length/2;i>2;i/=2){ '9|R7  
for(int j=0;j insertSort(data,j,i); ^}GR!990  
} b55G1w  
} q?&JS  
insertSort(data,0,1); [3W+h1  
} @jD19=  
j7HOh|q  
/** ]6HnK%  
* @param data Q $>SYvW  
* @param j ,k/<Nv;  
* @param i i{>YQ  
*/ wtGb 3D"am  
private void insertSort(int[] data, int start, int inc) { lHPhZ(Z  
int temp; a.AEF P4N  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i"hn%u$V  
} P`M1sON~  
} /p@0Q [E  
} zPb "6%1B  
'}NH$ KA  
} c-a;nAR  
%M05& <  
快速排序: 0 f"M-x  
>[g'i+{  
package org.rut.util.algorithm.support; 7jF2m'(  
t]pJt  
import org.rut.util.algorithm.SortUtil; &44?k:  
fP1fm  
/** 9M-/{D^+<  
* @author treeroot DZ|/#- k  
* @since 2006-2-2 -QP1Se*#  
* @version 1.0 u+e.{Z!  
*/ ) $I"LyK)  
public class QuickSort implements SortUtil.Sort{ ~bJ*LM?wOP  
gJBk&SDgtP  
/* (non-Javadoc) R )e^H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 885 ,3AdA  
*/ 22m'+3I~Y  
public void sort(int[] data) { (fWQ?6[  
quickSort(data,0,data.length-1); y]f| U-f:~  
} ZbcpE~<a  
private void quickSort(int[] data,int i,int j){ cY*lsBo  
int pivotIndex=(i+j)/2; C/pu]%n@4  
file://swap ^kpu9H  
SortUtil.swap(data,pivotIndex,j); &]/.=J  
4'# _b  
int k=partition(data,i-1,j,data[j]); OKzk\F6  
SortUtil.swap(data,k,j); =t-503e.J  
if((k-i)>1) quickSort(data,i,k-1); J)Td'iT(  
if((j-k)>1) quickSort(data,k+1,j); )F35WP~  
BLhuYuON  
} eM`"$xc Oe  
/** aA.TlG@zP  
* @param data y<5xlN(+v  
* @param i "'"dcA   
* @param j #/`V.jXt>  
* @return M3 $MgsN:  
*/ ZCVN+::Y  
private int partition(int[] data, int l, int r,int pivot) { :YZMR JL  
do{ l,3[hx  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \Tj(]  
SortUtil.swap(data,l,r); bga2{<VF  
} E^. =^bR  
while(l SortUtil.swap(data,l,r); m,]M_y\u  
return l; _&m   
} -f:uNF]Ls  
l=JK+uZ  
} Zx]"2U#  
OC[(Eq  
改进后的快速排序: v4Q8RE?  
{z}OZHJN  
package org.rut.util.algorithm.support; >j$CM:w  
\D #NO  
import org.rut.util.algorithm.SortUtil; g@lAk%V4  
=>6'{32W_  
/** FeFH_  
* @author treeroot #VEHyz6P  
* @since 2006-2-2 z<mU$<  
* @version 1.0 [(N<E/m%B  
*/ %fz!'C_4  
public class ImprovedQuickSort implements SortUtil.Sort { SSF4P&  
Wz7jB6AWA  
private static int MAX_STACK_SIZE=4096; D?Q{&6p  
private static int THRESHOLD=10; W7"ks(  
/* (non-Javadoc) oFV >b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vH#^|u  
*/ Ofg-gCF8  
public void sort(int[] data) { ~(`iRxK  
int[] stack=new int[MAX_STACK_SIZE]; Sc*O_c3D  
Rj=xn(@d  
int top=-1; qzqv-{.h  
int pivot; DFt1{qS8@u  
int pivotIndex,l,r; K(HP PM\  
,tL<?6_  
stack[++top]=0; qyuU  
stack[++top]=data.length-1; `=Hh5;ep  
y85/qg) H^  
while(top>0){ >2~q{e  
int j=stack[top--]; K_B-KK(^  
int i=stack[top--]; y8un&LP  
x*[\$E`v  
pivotIndex=(i+j)/2; RW|3d<Fj  
pivot=data[pivotIndex]; Y m|zM1qc  
>%.6n:\rG  
SortUtil.swap(data,pivotIndex,j); mPxph>o  
9_F2nmEv  
file://partition 9Qb_BNUo  
l=i-1; GKwm %A  
r=j; PDo%ob\Ym  
do{ eVDI7W:(Sn  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *eytr#0B-  
SortUtil.swap(data,l,r); iVt6rX  
} x,z+l-y  
while(l SortUtil.swap(data,l,r); NQ!jkojD  
SortUtil.swap(data,l,j); nrMm](Y45  
D EL#MD!  
if((l-i)>THRESHOLD){ n-{G19?  
stack[++top]=i; p/xxoU  
stack[++top]=l-1; Nq)=E[$  
} s7<x~v+^  
if((j-l)>THRESHOLD){ Xb=9~7&,$  
stack[++top]=l+1; o+(.Pb  
stack[++top]=j; B&yb%`9],W  
} ;X! sTs  
[(Pm\o  
} @twClk.s  
file://new InsertSort().sort(data); (yCF pb  
insertSort(data); #|34(ML  
} iP;X8'< BC  
/** 0zaE?dA]  
* @param data (<pc4#B@*  
*/ /4]M*ls  
private void insertSort(int[] data) { QOkPliX  
int temp; m-UI^M,@<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [dL4u^]{  
} ]w(i,iJ  
} A - G?@U  
} >v`lsCGb  
v*1UNXU\  
} >9(lFh0P  
[C)-=.Xx)j  
归并排序: QdL ;|3K9  
/ PAxPZf_  
package org.rut.util.algorithm.support; xGJ{_M  
keEyE;O}u  
import org.rut.util.algorithm.SortUtil; 70l"[Y  
&CFHH"OsT  
/** h \b]>q@  
* @author treeroot B]q &?~  
* @since 2006-2-2 Ym5q#f)|  
* @version 1.0 { D1.  
*/ T2 0dZ8{y  
public class MergeSort implements SortUtil.Sort{ _YY:}'+  
*?K3jy{  
/* (non-Javadoc) hp!UW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `ej  
*/ # &o3[.)9  
public void sort(int[] data) { Q uy5H  
int[] temp=new int[data.length]; Kgi%Nd  
mergeSort(data,temp,0,data.length-1); `(?E-~#'  
} qIa|sV\w0  
AxUj CerNf  
private void mergeSort(int[] data,int[] temp,int l,int r){ =u(. Y  
int mid=(l+r)/2; ^ S'}RZ*>  
if(l==r) return ; ;GO>#yg4Eh  
mergeSort(data,temp,l,mid); s2Ivd*=mT  
mergeSort(data,temp,mid+1,r); `itaQGLD  
for(int i=l;i<=r;i++){ oW(p (>  
temp=data; ~fn2B  
} %8tlJQvu  
int i1=l; T%Vii*?M  
int i2=mid+1; #vYdP#nWb  
for(int cur=l;cur<=r;cur++){ Nrva?W_i  
if(i1==mid+1) Iw8;",e2  
data[cur]=temp[i2++]; G:$wdT(u  
else if(i2>r) Iu^# +n  
data[cur]=temp[i1++]; k`6T% [D]  
else if(temp[i1] data[cur]=temp[i1++]; Zg%U4m:  
else iVzv/Lqm1  
data[cur]=temp[i2++]; ~oh=QakW  
} -@-cG\{  
} 2P~zYdjS  
M;={]w@n  
} b2. xJ4  
]L%qfy4  
改进后的归并排序: Q2iS0#  
aHe/MucK  
package org.rut.util.algorithm.support; lqa.Nj  
a1B_w#?8  
import org.rut.util.algorithm.SortUtil; 0n|op:]BHM  
FJgr=9>  
/** &Jv j@,>$d  
* @author treeroot wX" 6 S:  
* @since 2006-2-2 5zX;/n~  
* @version 1.0 /i$E|[  
*/ &aldnJ  
public class ImprovedMergeSort implements SortUtil.Sort { /pZLt)=P  
Xz&Hfs"/J  
private static final int THRESHOLD = 10; kehv85  
<7/_Vs)F0  
/* xWD=",0+  
* (non-Javadoc) }kdYR#{s  
* V}=9S@$o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +.&#whEw(i  
*/ 8E"Ik ~  
public void sort(int[] data) { UMuqdLaT9  
int[] temp=new int[data.length]; 8P0XY S@  
mergeSort(data,temp,0,data.length-1); ~mx me6"v  
} 7OG=LF*V-  
(EGsw o  
private void mergeSort(int[] data, int[] temp, int l, int r) { ge9j:S{  
int i, j, k; 9%j_"+<c  
int mid = (l + r) / 2; N&U=5c`Q'  
if (l == r) i)g=Lew  
return; mK5<;$  
if ((mid - l) >= THRESHOLD) |\%[e@u  
mergeSort(data, temp, l, mid); kMAQHpDD  
else nV ko]y  
insertSort(data, l, mid - l + 1); KlDW'R $  
if ((r - mid) > THRESHOLD) r4k =i4  
mergeSort(data, temp, mid + 1, r); uOc :^  
else `Lb^!6`)  
insertSort(data, mid + 1, r - mid); DcE)6z#  
e)LRD&Q  
for (i = l; i <= mid; i++) { uA7~`78  
temp = data; %+YLe-\?  
} \R yOexNZ  
for (j = 1; j <= r - mid; j++) { FA<|V!a  
temp[r - j + 1] = data[j + mid]; R<@s]xX_  
} M5s>;q)  
int a = temp[l]; j|TcmZGO  
int b = temp[r]; N}b/; Y  
for (i = l, j = r, k = l; k <= r; k++) { kB {  
if (a < b) { o8.KakrPP  
data[k] = temp[i++]; S(eCG2gR  
a = temp; P7O$*  
} else { )1wC].RFYm  
data[k] = temp[j--]; 4eK!1|1  
b = temp[j]; F0W4B  
} #\[h.4i  
} a,tzt ]>  
} lfp[(Ph)9  
&[$qA  
/** [ X]yj  
* @param data t=o0 #jo  
* @param l lxx)l(&  
* @param i qk;*$Q  
*/ u+UtvzUC  
private void insertSort(int[] data, int start, int len) { b}< T<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); x.CUJ^_.  
} |1wfLJ4--l  
} (+ q#kKR  
} B:#5U85m  
} 2K4Jkyi  
b<>GF-`w  
堆排序: :kz*.1  
_^;+_6&[  
package org.rut.util.algorithm.support; QPB@qx#@  
U>?q|(u  
import org.rut.util.algorithm.SortUtil; }kzGuNj  
9W88_rE'e}  
/** ".A+'pJ  
* @author treeroot yoiKt; S  
* @since 2006-2-2 'NHtCs=F   
* @version 1.0 nXPl\|pXt  
*/ IV*@}~BJ  
public class HeapSort implements SortUtil.Sort{ nf=*KS\v  
a3D''Ra  
/* (non-Javadoc) %Z9&zmO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .'N:]G@!  
*/ ([SrIG>X  
public void sort(int[] data) { |C}n]{*|  
MaxHeap h=new MaxHeap(); 07 [%RG  
h.init(data); "} =RPc%9  
for(int i=0;i h.remove(); 2u9O+]EP  
System.arraycopy(h.queue,1,data,0,data.length); l?Vm/YXb  
} I,;@\  
P"d7Af  
private static class MaxHeap{ Y|JC+ Ee  
$BHbnsaQ  
void init(int[] data){ 5p!X}u ]  
this.queue=new int[data.length+1]; ^'>kZ^w0  
for(int i=0;i queue[++size]=data; 4g<F."  
fixUp(size); h!.#r*vV  
} M &`ZF  
} :j_OO5b!  
&N4Jpa}w/%  
private int size=0; #yz5CWu  
W <.h@Rz+  
private int[] queue; bW03m_<M<1  
,{DZvif   
public int get() { f}{ lRk  
return queue[1]; *FhD%><  
} !_EL{/ko  
W,<L/ZKJ  
public void remove() { 4Ufx,]  
SortUtil.swap(queue,1,size--); ?4>uGaU\  
fixDown(1); '](4g/%  
} T,N"8N{K"  
file://fixdown rHe*/nN%*  
private void fixDown(int k) { _ nFsC  
int j; b^ wWg  
while ((j = k << 1) <= size) { R-odc,P=  
if (j < size %26amp;%26amp; queue[j] j++; L(Ww6oj  
if (queue[k]>queue[j]) file://不用交换 O`Ht|@[6  
break; CUJP"u>8M  
SortUtil.swap(queue,j,k); :eIPPh|\  
k = j; &XG k  
} kkWqP20q  
} w&&uk[Gh/a  
private void fixUp(int k) { *;^!FBT  
while (k > 1) { .gY}}Q  
int j = k >> 1; 6x18g(KbP  
if (queue[j]>queue[k]) X^204K%:  
break; yLv jfP1  
SortUtil.swap(queue,j,k); "mT95x\NA\  
k = j; "s[Y$!#  
} ;/tZsE{  
} Qdepzo>E  
/P_1vQq  
} dzA5l:5  
IX/FKSuq  
} $BIQ# T>qK  
W?+U%bIZ9  
SortUtil: ?t;>]Wo;  
g7*"*%v 2  
package org.rut.util.algorithm; F\pw0^K;N  
>R|*FYam  
import org.rut.util.algorithm.support.BubbleSort; /JP]5M)   
import org.rut.util.algorithm.support.HeapSort; f1eY2UtWQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; gkxEy5c[  
import org.rut.util.algorithm.support.ImprovedQuickSort; s=)0y$  
import org.rut.util.algorithm.support.InsertSort; do3 BI4Q  
import org.rut.util.algorithm.support.MergeSort; [h"#Gwb=;  
import org.rut.util.algorithm.support.QuickSort; >Hh8K<@NL  
import org.rut.util.algorithm.support.SelectionSort; E>_?9~8Mf  
import org.rut.util.algorithm.support.ShellSort;  }qf9ra  
t<`h(RczHI  
/** In1VW|4h  
* @author treeroot FN$ hEc!  
* @since 2006-2-2 'vgO`  
* @version 1.0 Rg:3}T`~n  
*/ XBJ9"G5  
public class SortUtil { R<r"jOd]  
public final static int INSERT = 1; L,@O OBD  
public final static int BUBBLE = 2; y&y(<  
public final static int SELECTION = 3; 5fh@nR  
public final static int SHELL = 4; Z=;+) #,  
public final static int QUICK = 5; |. bp  
public final static int IMPROVED_QUICK = 6; G5^gwG+  
public final static int MERGE = 7; "|1MJuY_6  
public final static int IMPROVED_MERGE = 8; 6k#H>zY,  
public final static int HEAP = 9; Ef fp^7 3  
P1P P#>E-2  
public static void sort(int[] data) { &&1q@m,cP  
sort(data, IMPROVED_QUICK); xP@VK!sc  
} ` eB-C//  
private static String[] name={ 1[k~*QS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9JF*xXd>Q  
}; )9,*s !)9  
2>{_O?UN  
private static Sort[] impl=new Sort[]{ >$.u|a  
new InsertSort(), Q@3.0Hf|{  
new BubbleSort(), wf7<#jIq  
new SelectionSort(), `[+9n2j  
new ShellSort(),  ]Ll <  
new QuickSort(), Q]*YIb~D  
new ImprovedQuickSort(), C,C=W]G  
new MergeSort(), +uPN+CgQ@  
new ImprovedMergeSort(), Z_%}pe39B  
new HeapSort() @5gZK[?|I  
}; ?FRR";  
tVx.J'"Y  
public static String toString(int algorithm){ T7;)HFGeW  
return name[algorithm-1]; M mg#Vy~  
} o z } p]l7  
uo1G   
public static void sort(int[] data, int algorithm) { ht^U VV2  
impl[algorithm-1].sort(data); uCK!lq-  
} ~A8%[.({5  
?KxI|os  
public static interface Sort { 5H6GZ:hp  
public void sort(int[] data); l3aG#4jj  
} [7Nn%eZC  
UQ|zSalv,  
public static void swap(int[] data, int i, int j) { F"a^`E&  
int temp = data; PVO9KWv**  
data = data[j]; *$(=I6b  
data[j] = temp; /p,D01Ws}(  
} #( nheL  
} ]\nG1+ta  
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