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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。 M3dNG]3E  
插入排序: (@?PN+68|  
N;\by<snN  
package org.rut.util.algorithm.support; #r)c@?T@j  
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import org.rut.util.algorithm.SortUtil; P/FO,S-V  
/** #fYz367>  
* @author treeroot bKH8/*Yk  
* @since 2006-2-2 A5gdZZ'x  
* @version 1.0 C"ZCX6p+$  
*/ eq\{*r"DCK  
public class InsertSort implements SortUtil.Sort{ O-vvFl#4  
kST  
/* (non-Javadoc) R:v`\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1)M>vdrP  
*/ Ye_)~,{,p  
public void sort(int[] data) { %k3a34P@  
int temp; qN_jsJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T=2 91)@  
} iwfv t^  
} x3my8'h@  
} KdOy3O_5N  
q-}J0vu\K  
} hQgi--Msw'  
BY$%gIB6>  
冒泡排序: R('44v5JQp  
PTvP;  
package org.rut.util.algorithm.support; |nj%G<  
<H~  (iQ  
import org.rut.util.algorithm.SortUtil; ZUMzWK5Th  
T{j&w%(z  
/** _>*$%R  
* @author treeroot #s Ebu^  
* @since 2006-2-2 LE!3'^Zq  
* @version 1.0 E-i rB/0  
*/ I=pT fkTT  
public class BubbleSort implements SortUtil.Sort{ fF8g3|p:  
:U<`iJwY  
/* (non-Javadoc) 4jrY3gyBX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,.f GZ4  
*/ cQUmcK/,  
public void sort(int[] data) { O.*,e  
int temp; #x&1kHu<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F 3}cVO2bY  
if(data[j] SortUtil.swap(data,j,j-1); P{)eZINlE  
} !T|X/B R  
} (a1s~  
} Z %MP:@z  
} y)!K@  
-q\1Tlc]3  
} BaTE59W  
NQ%lwE~  
选择排序: qMz0R\4  
Wel-a< e  
package org.rut.util.algorithm.support; @QMMtfeLj  
H5=-b@(  
import org.rut.util.algorithm.SortUtil; q=E<y  
jO$3>q  
/** Xi1/wbC  
* @author treeroot WrL&$dEJ?M  
* @since 2006-2-2 U)+Yh  
* @version 1.0 }} l04kN_  
*/ -pc*$oe  
public class SelectionSort implements SortUtil.Sort { O6;7'  
7WW@%4(  
/* ~FM5]<X)  
* (non-Javadoc) 4S@^ym  
* X%S?o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pNI=HHx  
*/ Yt7R[|  
public void sort(int[] data) { a! P?RbW  
int temp; N/mTG2'<  
for (int i = 0; i < data.length; i++) { C jsy1gA  
int lowIndex = i; O%y.  
for (int j = data.length - 1; j > i; j--) { $ T.c>13  
if (data[j] < data[lowIndex]) { X5527`?e  
lowIndex = j; *^Wx=#w$V  
} 2RidI&?c<  
}  -}{c;pT  
SortUtil.swap(data,i,lowIndex); >ZuWsA0q  
} /WB^h6qg  
} n_hV;  
u-At k-2M  
} X61]N^y  
%X O97  
Shell排序: .T/\5_Bx  
vVmoV0kGt  
package org.rut.util.algorithm.support; =zt@*o{F  
)avli@W-3j  
import org.rut.util.algorithm.SortUtil; *)ZDN~z7o  
sV'(y>PP%  
/** X4lz?Y:*  
* @author treeroot TP[<u-@G  
* @since 2006-2-2 ! iA0u  
* @version 1.0 Q\Fgc ;.U  
*/ +glT5sOk  
public class ShellSort implements SortUtil.Sort{ [&y{z-D>  
o4,W!^ n2  
/* (non-Javadoc) kf>oZ*/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \SS1-UbL  
*/ =M)+O%`*6  
public void sort(int[] data) { u!];RHOp|  
for(int i=data.length/2;i>2;i/=2){ 1p<m>s=D=e  
for(int j=0;j insertSort(data,j,i); Tz]t.]!&E  
} yNP M-  
} S.aSNH<  
insertSort(data,0,1); 3@*J=LGhKc  
} ^i2W=A'P  
tpO%)*  
/** x-+Hy\^@|  
* @param data 1RZhy_$\.  
* @param j 6SIk?]u  
* @param i { ,qm=Xjq  
*/ n:,At] ky  
private void insertSort(int[] data, int start, int inc) { R~iJ5@[  
int temp; x-,+skZs  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v{"$:Z ow  
} [84ss;.$  
} MJd!J ]E6  
} Q}2aBU.f  
J1T_wA_  
} oQ1>*[e<u  
KyK%2:  
快速排序: K>Dn#"{Y  
9o"k 7$  
package org.rut.util.algorithm.support; x4Mq{MrWp  
p?2 \9C4  
import org.rut.util.algorithm.SortUtil; U6e 0{n  
}eetx68\  
/** BMkN68q  
* @author treeroot @r^a/]5D  
* @since 2006-2-2 F$y3oX  
* @version 1.0 $DeHo"mg7m  
*/ 8e:J{EG~  
public class QuickSort implements SortUtil.Sort{ 3,=97Si=  
F~2bCy[Z  
/* (non-Javadoc) ) gbns'Z<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w5w,jD[  
*/ OOn{Wp  
public void sort(int[] data) { GuPxN}n 5  
quickSort(data,0,data.length-1); U}<5%"!;  
} tAO,s ZW  
private void quickSort(int[] data,int i,int j){ sygxV  
int pivotIndex=(i+j)/2; d _ )5Ks}  
file://swap DJvmwFx  
SortUtil.swap(data,pivotIndex,j); ]1h W/!  
"`qmeZ$rg  
int k=partition(data,i-1,j,data[j]); uT:'Kkb!  
SortUtil.swap(data,k,j); S=B?bD_,c  
if((k-i)>1) quickSort(data,i,k-1); ,$s NfW  
if((j-k)>1) quickSort(data,k+1,j); M?l/_!QB  
Fcz7   
} 4u- mE  
/** .R'<v^H  
* @param data ,RjE?M%  
* @param i )voJq\Y)%  
* @param j S-l<+O1fy  
* @return q#B=PZ'NA  
*/ Ut.%=o;&[  
private int partition(int[] data, int l, int r,int pivot) { /.P9n9  
do{ 9.u}<m  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4zyN>f|  
SortUtil.swap(data,l,r); OGW,[k= 2{  
} A!B: vJ  
while(l SortUtil.swap(data,l,r); /9T.]H ~  
return l; _)-t#Ve  
} fUj[E0yOF  
C+o1.#]JM  
} n-zAkKM  
T%74JRQ  
改进后的快速排序: ]!CMo+  
O(x1Ja,&  
package org.rut.util.algorithm.support; }huj%Pnk )  
3-x ;_  
import org.rut.util.algorithm.SortUtil; B' }h6ZH  
9U~fc U6  
/** U )kl !  
* @author treeroot >T84NFdz+  
* @since 2006-2-2 Buc{dcL/  
* @version 1.0 JBqL0H  
*/ U'~M(9uv:  
public class ImprovedQuickSort implements SortUtil.Sort { J5dwd,FQ  
s krdL.5  
private static int MAX_STACK_SIZE=4096; %8Eu{3  
private static int THRESHOLD=10; @^P<(%p  
/* (non-Javadoc) S 7pf QF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AXnRA W  
*/ CjR!dh1w_  
public void sort(int[] data) { eX)'C>4W  
int[] stack=new int[MAX_STACK_SIZE]; u}I-#j)wap  
O-P'Ff"}t  
int top=-1; 4eVQO%&2  
int pivot; [B~*88T  
int pivotIndex,l,r; de7 \~$  
+4L]Z ;k  
stack[++top]=0; #aI(fQZe  
stack[++top]=data.length-1; rhff8C//'  
1 S<E=7  
while(top>0){ |"]#jx*8KC  
int j=stack[top--]; {Kh^)oYdd  
int i=stack[top--]; Fnqj^5  
z)tULnR8  
pivotIndex=(i+j)/2; df\^uyD;  
pivot=data[pivotIndex]; ^^ >j2=  
2P35#QI[)  
SortUtil.swap(data,pivotIndex,j); 2i9FzpC3  
V.w L  
file://partition jk (tw-B  
l=i-1; ?+)>JvWDz  
r=j; p : {,~ 1  
do{ :m]KVcF.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ql/K$#u  
SortUtil.swap(data,l,r); Ms<v81z5T  
} J:Mn 5hdK=  
while(l SortUtil.swap(data,l,r); >c`r&W.t  
SortUtil.swap(data,l,j); h2jrO9  
M!i["($_  
if((l-i)>THRESHOLD){ M r-l  
stack[++top]=i; Vh?5  
stack[++top]=l-1; SfSWjq  
} L"8Z5VHA&&  
if((j-l)>THRESHOLD){ hTc :'vq  
stack[++top]=l+1; g"{`g6(+  
stack[++top]=j; Kz~E"?  
} C6"{-{H  
i[Qq,MmC  
} / jLb{Ky  
file://new InsertSort().sort(data); ]hMs:$}  
insertSort(data); g3|k-  
} 8Y"R@'~  
/** kxQ al  
* @param data Xr."C(`w  
*/ =W*Ro+wWb  
private void insertSort(int[] data) { rS>@>8k2,  
int temp; w`GjQIA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zK_Q^M`  
} ''^2rF^  
} 73j\!x  
} }!uwWBw`  
Gq=tR`.  
} !L[$t~z  
8B?*?,n5  
归并排序: %45*DT  
we0haK  
package org.rut.util.algorithm.support; ke<l@w O  
y_``-F&Z  
import org.rut.util.algorithm.SortUtil; @Os0A  
I*z|_}$  
/** 8\F|{vt#  
* @author treeroot ? KDg|d  
* @since 2006-2-2 `3eQ#,G!  
* @version 1.0 #.<Dq8u  
*/ -G[TlH06  
public class MergeSort implements SortUtil.Sort{ lT?Vt`==~M  
XE'3p6  
/* (non-Javadoc) )Vz=:.D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3qQ}U}-;|  
*/ _RNP_$a  
public void sort(int[] data) { Py`7)S  
int[] temp=new int[data.length]; |Ed?s  
mergeSort(data,temp,0,data.length-1); w1EB>!<;tj  
} Zd| u>tn  
E]Q d5l  
private void mergeSort(int[] data,int[] temp,int l,int r){ WN $KS"b6}  
int mid=(l+r)/2; ),>whCtsI  
if(l==r) return ; wwNkJ+  
mergeSort(data,temp,l,mid); c!kzwc(  
mergeSort(data,temp,mid+1,r); %x./>-[t  
for(int i=l;i<=r;i++){ +TW,!.NBG  
temp=data; fh*7VuAc  
} Cp?6vu|RA  
int i1=l; "#:h#uRUb  
int i2=mid+1; ~tLvD[n[  
for(int cur=l;cur<=r;cur++){ C1#f/o->  
if(i1==mid+1) ki'<qa  
data[cur]=temp[i2++]; aECpe'!m4  
else if(i2>r) $0cE iq?Hf  
data[cur]=temp[i1++]; e= XC$Jv  
else if(temp[i1] data[cur]=temp[i1++]; |hS^eK_  
else _1jbNQa  
data[cur]=temp[i2++]; aI>F8R?  
} %+((F +[  
} 2K^xN]]rG  
1@N4Y9o  
} BXNC(^  
bw)E;1zo  
改进后的归并排序: =)#<u9 qqL  
Z6zLL   
package org.rut.util.algorithm.support; e#vGrLs.  
eNK6=D|  
import org.rut.util.algorithm.SortUtil; y(*5qa<>  
{`Z= LLL  
/** HqI[]T@  
* @author treeroot Y=i_2R2e2  
* @since 2006-2-2 KGf@d*ZOMz  
* @version 1.0 k$.l^H u  
*/ {z9,CwJan?  
public class ImprovedMergeSort implements SortUtil.Sort { qYPgn _  
-UWyBM3c@  
private static final int THRESHOLD = 10; 7:zoF], s  
&p+2Vz{  
/* *'BI=* `  
* (non-Javadoc) pJ x H  
* q&&uX-ez5W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  T4J WZ  
*/ N3V4Mpf  
public void sort(int[] data) { ]M 2n%9  
int[] temp=new int[data.length]; #<@_mbQ@|K  
mergeSort(data,temp,0,data.length-1); UhXVeGO  
} <'j ygZ(  
gk}.L E  
private void mergeSort(int[] data, int[] temp, int l, int r) { LWxP}? =  
int i, j, k; S#0C^  
int mid = (l + r) / 2; cpH*!*S  
if (l == r) S^N{=*  
return; /GO((v+J  
if ((mid - l) >= THRESHOLD) *c( J4  
mergeSort(data, temp, l, mid); s]HJcgI  
else Gx|/ Jq  
insertSort(data, l, mid - l + 1); #4AqWyp#f  
if ((r - mid) > THRESHOLD) ivSpi?   
mergeSort(data, temp, mid + 1, r); ?btX&:j2P  
else ti<;>P[4  
insertSort(data, mid + 1, r - mid); AHT(Z~ C  
b%X<'8 z9Z  
for (i = l; i <= mid; i++) { #bb$Icmtk  
temp = data; rW)}$|-Z  
} PKev)M;C+  
for (j = 1; j <= r - mid; j++) { k#2b3}(,  
temp[r - j + 1] = data[j + mid]; `uc`vkVZ  
} eH9-GGr  
int a = temp[l]; QZ5%nJme_  
int b = temp[r]; FC4hvO(/m  
for (i = l, j = r, k = l; k <= r; k++) { qvs[Gkaa@  
if (a < b) { >`n)-8  
data[k] = temp[i++]; 9?|m ^  
a = temp; .4!wp&  
} else { ^fU,9  
data[k] = temp[j--]; }]pOR&o  
b = temp[j]; 0Rn`63#  
} t&C0V|s79$  
} m xy=3cUi  
} r3YfY \  
QaOF l` i  
/** kqCUr|M.P  
* @param data m.U&O=]5  
* @param l V^\b"1X7N  
* @param i rD>q/,X=\  
*/ /b{Ufo3v  
private void insertSort(int[] data, int start, int len) { i;67< f}-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =I$:-[(  
} j2|UuWU  
} Iy2AJ|d.  
} I^QB`%v5  
} &qV_|f;  
++}#pl8e  
堆排序: LfsOGC  
fM<g++X  
package org.rut.util.algorithm.support; 2!a~YT  
\qbEC.-K  
import org.rut.util.algorithm.SortUtil; "; ?^gA  
XE|"n  
/** Z-i$KF  
* @author treeroot a]x\e{  
* @since 2006-2-2 Csm23QLsg)  
* @version 1.0 FFc?Av?_  
*/ z\<gm$1CB  
public class HeapSort implements SortUtil.Sort{ $t>ow~Xi  
k= 9a/M u  
/* (non-Javadoc) ,oj)`?Vh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =1j`VJU9  
*/ jE$]Z(Ab  
public void sort(int[] data) { =l$qwcfbo  
MaxHeap h=new MaxHeap(); ~ [=2d a  
h.init(data); zQx7qx  
for(int i=0;i h.remove(); )eWg2w]  
System.arraycopy(h.queue,1,data,0,data.length); t2z@"e   
} ":^cb =  
d\rs/ee  
private static class MaxHeap{ Xx=.;FYk  
GnW_^$Fs  
void init(int[] data){ -KCQ!0\F  
this.queue=new int[data.length+1]; V7>{,  
for(int i=0;i queue[++size]=data; <V*M%YWs  
fixUp(size); ;<v9i#K5  
} oFS)3.  
} Z9lfd6MU,  
mvBUm-X  
private int size=0; H{*R(S<I  
;gW?Fnry;  
private int[] queue; nB , &m&  
JZ0u/x5  
public int get() { 9,Ug  
return queue[1]; (2%z9W  
} 86f/R c  
yl~h `b4  
public void remove() { .sbV<ulbc  
SortUtil.swap(queue,1,size--); M{~KT3c  
fixDown(1); a.g:yWL\  
} -\fn\n  
file://fixdown AlT04H   
private void fixDown(int k) { rxAb]~MMp  
int j; n5 jzVv  
while ((j = k << 1) <= size) { y :8Oc?  
if (j < size %26amp;%26amp; queue[j] j++; *mXs(u  
if (queue[k]>queue[j]) file://不用交换 mdIa`OZr  
break; `@i! 'h  
SortUtil.swap(queue,j,k); @&]%%o+  
k = j; ' |K408i   
} ~D\ V!  
} :S{+|4pH  
private void fixUp(int k) { nK|WzUtp  
while (k > 1) { ZIM 5$JdCv  
int j = k >> 1; ?!kPW^gD  
if (queue[j]>queue[k]) eMDraJv@  
break; i^DZK&B@u  
SortUtil.swap(queue,j,k); {KalVZX2R  
k = j; fwi( qx1=}  
} u:D,\`;)  
} W%cJ#R[o  
g"L$}#iTsl  
} fRd^@@,[  
v/WvT!6V`  
} |0/~7l  
~!W{C_*N  
SortUtil: _8"%nV  
AIFI@#3  
package org.rut.util.algorithm; 6'qC *r   
m%km@G$  
import org.rut.util.algorithm.support.BubbleSort; TwXqk>J  
import org.rut.util.algorithm.support.HeapSort; )F) (Hg  
import org.rut.util.algorithm.support.ImprovedMergeSort; V3$Yr"rZ;  
import org.rut.util.algorithm.support.ImprovedQuickSort; IPT\d^|f  
import org.rut.util.algorithm.support.InsertSort; .`K<Iug1  
import org.rut.util.algorithm.support.MergeSort; |Ptv)D  
import org.rut.util.algorithm.support.QuickSort; o Kfm=TbY  
import org.rut.util.algorithm.support.SelectionSort; [Dq!t1  
import org.rut.util.algorithm.support.ShellSort; Qtpw0t"  
DZ Q=Sinry  
/** Ljjuf=]  
* @author treeroot Th)Z?\8zk  
* @since 2006-2-2 /<$\)|r  
* @version 1.0 &*N;yW""f  
*/ F"Y.'my8  
public class SortUtil { [<M~6]  
public final static int INSERT = 1; Q)s[ls  
public final static int BUBBLE = 2; ^p 4 33  
public final static int SELECTION = 3; Q4,!N(>D  
public final static int SHELL = 4; !nkjp[p  
public final static int QUICK = 5; 3@/\j^U  
public final static int IMPROVED_QUICK = 6; h+7THMI  
public final static int MERGE = 7; kKqb:  
public final static int IMPROVED_MERGE = 8; Vyqj)1Z8>  
public final static int HEAP = 9; P6ztP$M(  
&{c.JDO  
public static void sort(int[] data) { hf~'EdU  
sort(data, IMPROVED_QUICK); GF-\WD  
} P[E5e+ A)  
private static String[] name={ 89[5a  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ub/9T-#l  
}; LJ Aqk2k  
$ RDwy)9  
private static Sort[] impl=new Sort[]{ (/r l\I  
new InsertSort(), lU[" ZFP  
new BubbleSort(), i/%+x-#  
new SelectionSort(), RHc-kggk!  
new ShellSort(), +(-L  
new QuickSort(), ZCAdCKX|  
new ImprovedQuickSort(), kgV_*0^  
new MergeSort(), eJ JD'Z  
new ImprovedMergeSort(), x$;I E  
new HeapSort() _Fz]QxO  
}; 7xIXFuu  
+q/ j  
public static String toString(int algorithm){ bZ$;`F5})  
return name[algorithm-1]; dyz)22{\!`  
} %9!, PeRe  
R"9^FQ13  
public static void sort(int[] data, int algorithm) { {m )$b  
impl[algorithm-1].sort(data); 5HZt5="+  
} .MzVc42<  
tJ NJ S  
public static interface Sort { #~(VOcRI  
public void sort(int[] data); ? %9-5"U[  
} AUm"^-@x#>  
c05kHB$O  
public static void swap(int[] data, int i, int j) { oK5"RW  
int temp = data; ([r4N#lx  
data = data[j]; 8tR(i[L   
data[j] = temp; <:mV^tK  
} %)$^_4.g  
} i*We kr3Wo  
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