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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。 ~j#6 goKn  
插入排序: }AZx/[k |z  
*[:CbFE0y  
package org.rut.util.algorithm.support; T JS1,3<  
kTc5KHJ7  
import org.rut.util.algorithm.SortUtil; F{~r7y;0  
/** BV?N_/DXp  
* @author treeroot e7qMt[.  
* @since 2006-2-2 M;V#Gm  
* @version 1.0 ]Wt6V^M'@  
*/ )wv[!cYyW  
public class InsertSort implements SortUtil.Sort{ ]V^.!=gh$  
6v O)s!b  
/* (non-Javadoc) 6-14Htsk6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ds,"E#?  
*/ h=r< B\Pa  
public void sort(int[] data) { P3ev 4DL  
int temp; L00 ;rTs>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J*KBG2+13  
} Tc5OI'-V  
} )6 0f  
} aDvO(C  
{)9HS~e T  
} @<TZH  
{&u7kWD|  
冒泡排序: 6ri?y=-c  
X3L[y\  
package org.rut.util.algorithm.support; m3Z}eC8LK  
X8n/XG~_  
import org.rut.util.algorithm.SortUtil; ^I~T$YjC '  
AYu'ptDNr  
/** G^@Jgx3n  
* @author treeroot ?WtG|w  
* @since 2006-2-2 @j2*.ee  
* @version 1.0 HT=Am  
*/ Yn]y d1  
public class BubbleSort implements SortUtil.Sort{ )LrCoI =|  
( WtE`f;Q  
/* (non-Javadoc) _6S b.9m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `e'o~ oSu  
*/ .O%1)p  
public void sort(int[] data) { $F`<&o  
int temp; )bXx9,VL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Fif^V  
if(data[j] SortUtil.swap(data,j,j-1); })Mv9~&S  
} cc(r,ij~4  
} A.C278^O8  
} imCl{vt(kj  
} DEp%\sj?  
lJ]\  
} `NWgETf^#  
IL2Gsj)M  
选择排序: +9 p`D  
2|H91Y2  
package org.rut.util.algorithm.support; &c?hJ8"  
Ed0>R<jR9  
import org.rut.util.algorithm.SortUtil; Z0 IxYEp  
8xpYQ<cax  
/** NRuG?^/}d  
* @author treeroot #[0\=B -  
* @since 2006-2-2 $X=D9h  
* @version 1.0 ctUF/[_w;  
*/ _ kSPUP5  
public class SelectionSort implements SortUtil.Sort { +V+*7s%fL  
:n>ccZeMv  
/* *[1u[H9Cv  
* (non-Javadoc) +=*m! 7Mr  
* "kBqY+:Cn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P2Qyz}!wo  
*/ _?]BVw  
public void sort(int[] data) { fByh";<`P  
int temp; l88a#zUQDN  
for (int i = 0; i < data.length; i++) { +x9"#0|k;  
int lowIndex = i; ogc('HqF^'  
for (int j = data.length - 1; j > i; j--) { ks%7W -  
if (data[j] < data[lowIndex]) { h6T/0YhWLP  
lowIndex = j; [' OCw {<  
} 1S[5#ewB;j  
} Gz[ym j)5  
SortUtil.swap(data,i,lowIndex); e=n{f*KG`  
} 7fW=5wc  
} )Rhff$  
n@07$lY@;  
} T:g4D z*2\  
X!#i@V  
Shell排序: 'K@{vB  
A?;8%00  
package org.rut.util.algorithm.support; 97]a-)SA  
S-LZ(o{ZL  
import org.rut.util.algorithm.SortUtil; q ~Q)'*m  
,JQxs7@2k  
/** N{hF [F  
* @author treeroot *e-ptgO  
* @since 2006-2-2 ,y8I)+  
* @version 1.0 <jRFN&"h}  
*/ A M1C $  
public class ShellSort implements SortUtil.Sort{ 4I#eC#"  
mj(&`HRs4  
/* (non-Javadoc) Mi/ &$" =  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Ic?:lKN  
*/ V^`?8P8d  
public void sort(int[] data) { 4$?w D <  
for(int i=data.length/2;i>2;i/=2){ zOao&  
for(int j=0;j insertSort(data,j,i); inPdV9  
} =(|xU?OL  
} Vh#Mp!  
insertSort(data,0,1); t;LX48 TQ  
} ,na=~.0R:  
NO+ 55n  
/** {n'qKur xY  
* @param data n(Q\' ,C  
* @param j sR>`QIi(a  
* @param i m,@1LwBH  
*/ F[7Kw"~J  
private void insertSort(int[] data, int start, int inc) { WBw M;S#%  
int temp; I| W'n-4Y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :zj9%4A  
} 2-$bh  
} [j=,g-EOA  
} \=w'HZH#+  
4j=<p@  
} V{T{0b" \U  
h"PS-]:CD  
快速排序: S7UZGGjTk  
{ p!_-sL  
package org.rut.util.algorithm.support; "^9[OgE:  
C?[a3rNH(  
import org.rut.util.algorithm.SortUtil; B|Fl ,55  
uO ?Od  
/** ]<8B-D?Z  
* @author treeroot 8NaL{j1`  
* @since 2006-2-2 zmB31' _  
* @version 1.0 FI1THzW4J  
*/ [:nx);\  
public class QuickSort implements SortUtil.Sort{ >k&8el6h  
Q$|^~  
/* (non-Javadoc) R,x>$n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GP[6nw_'^  
*/ XdGpW  
public void sort(int[] data) { c7+Djqs  
quickSort(data,0,data.length-1); aE7u5 PM  
} %ezb^O_6v  
private void quickSort(int[] data,int i,int j){ VDByj "%  
int pivotIndex=(i+j)/2; atLV`U&t  
file://swap wovmy{K  
SortUtil.swap(data,pivotIndex,j); B]^>GH  
T|o`a+?  
int k=partition(data,i-1,j,data[j]); VG<Hw{ c3r  
SortUtil.swap(data,k,j); @cuD8<\i  
if((k-i)>1) quickSort(data,i,k-1); Ka]J^w;a  
if((j-k)>1) quickSort(data,k+1,j); $5TepH0D  
;m@1Ec@* p  
} 2SDh0F  
/** Sc1+(z  
* @param data > $w^%I  
* @param i Q;$ 9qOF  
* @param j Dd!Sr8L[  
* @return ex` xkZ+  
*/ f {y]  
private int partition(int[] data, int l, int r,int pivot) { /OQK/ t63  
do{ :vc[/<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <i_> y~v`  
SortUtil.swap(data,l,r); |'V DI]p&  
} O!+nF]V4f  
while(l SortUtil.swap(data,l,r); ~lzdbX  
return l; lQV|U;~D  
} _ yfdj[Ot`  
uQGz;F x  
} AVXX\n\_  
AIZW@Nq.5  
改进后的快速排序: "wA0 LH_  
 20I4r  
package org.rut.util.algorithm.support; a'@-"qk  
$hG;2v  
import org.rut.util.algorithm.SortUtil; I86e&"40  
s<A*[  
/** Q~fwWp-J  
* @author treeroot hq/J6 M  
* @since 2006-2-2 *0%4l_i  
* @version 1.0 )n\*ht7  
*/ .A3DFm3t  
public class ImprovedQuickSort implements SortUtil.Sort { gw_|C|!P  
p= !#],[  
private static int MAX_STACK_SIZE=4096; BRQ"A,  
private static int THRESHOLD=10; aB6Ye/Io  
/* (non-Javadoc) &EAk z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [096CK  
*/ <Ctyht0c.  
public void sort(int[] data) { ,f} h}  
int[] stack=new int[MAX_STACK_SIZE]; 3g4e' ]t  
`1nRcY  
int top=-1; 9<xTu>7J  
int pivot; >f&xJq  
int pivotIndex,l,r; a @6^8B?w;  
Zxg1M  
stack[++top]=0; `kv1@aQPL  
stack[++top]=data.length-1; 9*#$0Y=  
m)s xotgXf  
while(top>0){ 1#grB(p?  
int j=stack[top--]; x!'7yx  
int i=stack[top--]; hVMYB_<~  
-#hK|1]  
pivotIndex=(i+j)/2; Q]< (bD.7  
pivot=data[pivotIndex]; 2q)T y9  
y^2#9\}K  
SortUtil.swap(data,pivotIndex,j); 7t'(`A 6t/  
Y4QLs^IdB  
file://partition >@^<S_KVh  
l=i-1; RnHQq'J|\  
r=j; hlX>K  
do{ ($c`s8mp  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |y.zo cBj  
SortUtil.swap(data,l,r); r=h8oUNEJ*  
} K!GUv{fp  
while(l SortUtil.swap(data,l,r); JW=uK$sO  
SortUtil.swap(data,l,j); Yt -W1vl  
`)"tO&Fn  
if((l-i)>THRESHOLD){ lp(Nv(S  
stack[++top]=i; cL#-*_(  
stack[++top]=l-1; cv3L&zg M  
} Vl<`|C>  
if((j-l)>THRESHOLD){ aiYo8+{!#  
stack[++top]=l+1; d!o.ASL{  
stack[++top]=j; _*Pfp+if  
} Q/p(#/y#b  
IWQ&6SDW$z  
} Bb~5& @M|N  
file://new InsertSort().sort(data); cn$5:%IK  
insertSort(data); ji }#MBac  
} C1 W>/?XC  
/** d7E7f  
* @param data !~WZ_z  
*/ *2`:VFEV  
private void insertSort(int[] data) { ^%;"[r  
int temp; ?4,@, ae&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5? Wg%@  
} s}wO7Df=+  
} :AZp}  
} rsWQHHkO  
) ]73S@P(=  
} TZ'aNcGg  
f3 !n$lj  
归并排序: h6g:(3t6m  
m=H_?W;  
package org.rut.util.algorithm.support; Vn'?3Eb<  
P@C c]Z  
import org.rut.util.algorithm.SortUtil; d<#p %$A4  
QO2Ut!Y  
/** 7{-@}j`  
* @author treeroot W,Ty=:qm*  
* @since 2006-2-2 _ \l HI  
* @version 1.0 V~85oUc\-  
*/ GA\2i0ow  
public class MergeSort implements SortUtil.Sort{ Rb#/qkk/  
H<,bq*@  
/* (non-Javadoc) Uj,g]e 8e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) okz]Qc>G  
*/ EY~7oNfc`R  
public void sort(int[] data) { >PIPp7C  
int[] temp=new int[data.length]; 8 }-7{  
mergeSort(data,temp,0,data.length-1); "J& (:(:  
} w,Q)@]_  
&3I$8v|!?  
private void mergeSort(int[] data,int[] temp,int l,int r){ c}%es=@  
int mid=(l+r)/2; UeA2c_ 5  
if(l==r) return ; zj{(p Z1  
mergeSort(data,temp,l,mid); gGI8t@t:  
mergeSort(data,temp,mid+1,r); >60"p~t  
for(int i=l;i<=r;i++){ uoHqL IpQ  
temp=data; .U 39nd  
} U+} y %3l  
int i1=l; as(*B-_n~  
int i2=mid+1; jn^fgH ?  
for(int cur=l;cur<=r;cur++){ Oxv+1Ub<Dv  
if(i1==mid+1) q[P~L`h S  
data[cur]=temp[i2++]; -KiRj!v|  
else if(i2>r) EL7T'zJ$  
data[cur]=temp[i1++]; .a,(pq Jg  
else if(temp[i1] data[cur]=temp[i1++]; F$h'p4$T  
else ds]?;l"  
data[cur]=temp[i2++]; |<rfvsQ.  
} ^!}F%  
} <1 S+ '  
Ihg~Q4t  
} MKC$;>i  
V\AK6U@r^  
改进后的归并排序: 0~]QIdu{AR  
'irGvex  
package org.rut.util.algorithm.support; E_3r[1l  
/'4Q{8.a  
import org.rut.util.algorithm.SortUtil; EjSD4  
yp p4L|R  
/** 4{Udz!  
* @author treeroot 9#Y2`p T  
* @since 2006-2-2 zmb@*/fK  
* @version 1.0 p![&8i@ym  
*/ nhewDDu  
public class ImprovedMergeSort implements SortUtil.Sort { #W|!fILL  
IBET'!j4"  
private static final int THRESHOLD = 10; ufP Cx|x~  
H* /&A9("  
/* ({e7U17[#  
* (non-Javadoc)  2:'lZQ  
* (@q3^)I4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )[jy[[K(  
*/ g/#~N~&  
public void sort(int[] data) { Fg=v6j4W  
int[] temp=new int[data.length]; o@3B(j;J`  
mergeSort(data,temp,0,data.length-1); /UHp [yod  
} vLDi ;  
!BUi)mo  
private void mergeSort(int[] data, int[] temp, int l, int r) { Rg&19 }BU  
int i, j, k; A$@o'Q;he  
int mid = (l + r) / 2; :Fw?{0  
if (l == r) ZMdW2_*F   
return; fa{@$ppx  
if ((mid - l) >= THRESHOLD) 6V2j*J  
mergeSort(data, temp, l, mid); B\[-fq  
else 3gc"_C\$  
insertSort(data, l, mid - l + 1); %ek"!A  
if ((r - mid) > THRESHOLD) h<Wg3o  
mergeSort(data, temp, mid + 1, r); tpo>1|  
else #ZWl=z5aBi  
insertSort(data, mid + 1, r - mid); <KLg0L<W  
.S_QQM}Q  
for (i = l; i <= mid; i++) { U5<@<j(@  
temp = data; V#J"c8n  
} J`<f  
for (j = 1; j <= r - mid; j++) { +"uwV1)b"  
temp[r - j + 1] = data[j + mid]; <d"Gg/@a  
} f`|G]da-3o  
int a = temp[l]; X NE+(Bt  
int b = temp[r]; } 0;Sk(B>  
for (i = l, j = r, k = l; k <= r; k++) { C[8KlD  
if (a < b) { \Y e%o}.{  
data[k] = temp[i++]; iBoEZEHjw  
a = temp; <hv7s,i  
} else { {|6z+vR  
data[k] = temp[j--]; gz61FW  
b = temp[j]; 5B*qbM  
} $.:3$et@/  
} sPCMckt  
} |>2: eH  
CH;;V3  
/** tpYa?ZCM  
* @param data Yy h=G  
* @param l [Oy >R  
* @param i FT.@1/)  
*/ ~`R1sSr"  
private void insertSort(int[] data, int start, int len) { G{o+R]Us  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z+/LS5$  
} }OrYpZob  
} 1[DS'S  
} 0S.?E.-&0  
} "={L+di:M  
v!trsjb  
堆排序: `?uPn~,e8  
+< KNY  
package org.rut.util.algorithm.support; "}zda*z8  
]XUSqai  
import org.rut.util.algorithm.SortUtil; l1<?ONB.#  
GwQn;gkF  
/** $]*d#`Sy{%  
* @author treeroot ~/|zlu*jpc  
* @since 2006-2-2 _tj&Psp  
* @version 1.0 Dp^/gL=  
*/ 54q3R`y  
public class HeapSort implements SortUtil.Sort{ }q'WC4.  
JJ5C}`(  
/* (non-Javadoc) frqJN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z*LiweR-  
*/ hZN<Yd8:  
public void sort(int[] data) { ~G `J r  
MaxHeap h=new MaxHeap(); ,4Y*:JU4  
h.init(data); [6R fS  
for(int i=0;i h.remove(); gX,9Gh  
System.arraycopy(h.queue,1,data,0,data.length); 2[up+;%Y  
} A]?^ H<  
` X}85  
private static class MaxHeap{ / Z!i;@Wf  
D$nK`r  
void init(int[] data){ -0 0}if7  
this.queue=new int[data.length+1]; !kXeO6X@m  
for(int i=0;i queue[++size]=data; G9RP^  
fixUp(size); 0{R/<N  
} B*,?C]0{  
} c3k|G<C2  
NHkL24ve  
private int size=0; 1q]c7"  
AuCWQ~  
private int[] queue; FT/amCRyT  
wFL3& *  
public int get() { 84M3c  
return queue[1]; CLN+I'uX0  
} %S#WPD'Y  
Hr }k5'  
public void remove() { ow.6!tl0=h  
SortUtil.swap(queue,1,size--); rkYjq4Z@  
fixDown(1); =Od>;|]m  
} tt4+m>/T  
file://fixdown #D)x}#V\  
private void fixDown(int k) { }.{}A(^YR  
int j; O3%[dR  
while ((j = k << 1) <= size) { s#^pC*,'  
if (j < size %26amp;%26amp; queue[j] j++; k/lFRi-i  
if (queue[k]>queue[j]) file://不用交换 I]uhi{\C  
break; @GG ccF  
SortUtil.swap(queue,j,k); 2c:f<>r0y  
k = j; &1Fply7(Ay  
} l4ouZR  
} 8#f$rs(}  
private void fixUp(int k) { ax@H"d&  
while (k > 1) { 7co`Zw4}g  
int j = k >> 1; d^84jf.U  
if (queue[j]>queue[k]) OD+5q(!"a  
break; P(h5=0`*PR  
SortUtil.swap(queue,j,k); 2p:r`THvS5  
k = j; ;V.vfar  
} r4;Bu<PQN1  
} !T'X 'Q  
nq;#_Rkr  
} X~RH^VYv  
z\.1>/Z=  
} nyhMnp#<  
z $6JpG  
SortUtil: C6@t  
'IQsve7cI  
package org.rut.util.algorithm; LSkk;)'2K  
XDLEVSly7  
import org.rut.util.algorithm.support.BubbleSort; c> G@+  
import org.rut.util.algorithm.support.HeapSort; -G b-^G  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?~F. /  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9L)L|4A.l  
import org.rut.util.algorithm.support.InsertSort; I/p]DT  
import org.rut.util.algorithm.support.MergeSort; ixw(c&gL  
import org.rut.util.algorithm.support.QuickSort; % vS8?nG  
import org.rut.util.algorithm.support.SelectionSort; WC-_+9)2&  
import org.rut.util.algorithm.support.ShellSort; n33kb/q*  
U9ZbVjqv@  
/** a8s4T$  
* @author treeroot b!a %YLL  
* @since 2006-2-2 ^M Ey,  
* @version 1.0 BaL]mIx  
*/ A=`* r*  
public class SortUtil { <qY5SV,  
public final static int INSERT = 1; crn k|o  
public final static int BUBBLE = 2; h<3p8eB  
public final static int SELECTION = 3; P s#>y&  
public final static int SHELL = 4; kO ![X^V  
public final static int QUICK = 5; R&So4},B  
public final static int IMPROVED_QUICK = 6; 3g'+0tEl  
public final static int MERGE = 7; a %K}j\M  
public final static int IMPROVED_MERGE = 8; )HVcG0H1  
public final static int HEAP = 9; \Ph7(ik  
C\Ayv)S #2  
public static void sort(int[] data) { pm]fQ uq  
sort(data, IMPROVED_QUICK); @"8R3BN  
} ;<-7*}Dj  
private static String[] name={ rn" pKUd  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \P?A7vuhLs  
}; s4,(26y  
}kPVtSQ  
private static Sort[] impl=new Sort[]{ ;CmOsA,1  
new InsertSort(), !N~*EI$  
new BubbleSort(), nem@sB;v#  
new SelectionSort(), L[C*@ uK  
new ShellSort(), gq4 . d  
new QuickSort(), DuNcX$%%  
new ImprovedQuickSort(), r95zP]T  
new MergeSort(), u!1/B4!'O  
new ImprovedMergeSort(), B8~= RmWLl  
new HeapSort() (@Zcx9  
}; _01Px a2.  
fIyPFqf7w)  
public static String toString(int algorithm){ 6tdI6  
return name[algorithm-1]; 2k+16/T  
} -e*BqH2t  
v2J0u:#,  
public static void sort(int[] data, int algorithm) { Q!$IQJ]|Y  
impl[algorithm-1].sort(data); D'L{wm  
} #&siHHs \  
zilaP)5x6  
public static interface Sort { 4}-#mBV]/  
public void sort(int[] data); wj%wp[KA$  
} j=j+Nf$  
9#@Zz4Ww  
public static void swap(int[] data, int i, int j) { IVteF*8hU  
int temp = data; ,F: =(21  
data = data[j]; (~#G'Hd  
data[j] = temp; }1m_o@{3P  
} "{( [!  
} ( V4G<-jG  
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