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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。 ,BAF?} 04=  
插入排序: 5,Zn$zosJC  
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package org.rut.util.algorithm.support; 5!*a,$S  
q>X 2=&1  
import org.rut.util.algorithm.SortUtil; D3ad2vH  
/** 4F!d V;"Z(  
* @author treeroot [N)M]u  
* @since 2006-2-2 =Y[Ae7e  
* @version 1.0 LcF3P 4  
*/ :LG%8Z{R  
public class InsertSort implements SortUtil.Sort{ A4h/oMis  
g.s oN qt=  
/* (non-Javadoc) rg.if"o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H)tDfk sq\  
*/ F{tSfKy2  
public void sort(int[] data) { L~~Yh{<  
int temp; J K^;-&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O2f2Fb$B7  
} fO nvC*  
} <X*8Xzmv  
} -}o;Y)  
_#B/# ^a  
} *E'K{?-K  
wt;aO_l  
冒泡排序: xkovoTzV  
F eLP!oS>  
package org.rut.util.algorithm.support; V ;jz0B  
/G;yxdb  
import org.rut.util.algorithm.SortUtil; Y2EN!{YU  
!)34tu2  
/** ZbUf|#GTB  
* @author treeroot p6'8l~W+  
* @since 2006-2-2 v'tk: Hm1  
* @version 1.0 *2F }e4v  
*/ zdE^v{}|  
public class BubbleSort implements SortUtil.Sort{ /+msrrpD  
|e\%pfZ   
/* (non-Javadoc) 6Y^o8R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {J$aA6t:"T  
*/ $!Tw`O  
public void sort(int[] data) { @@jdF-Utj;  
int temp; `Fj(g!`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ J^4k}  
if(data[j] SortUtil.swap(data,j,j-1); 2wCRT}C  
} FQ%mNowuj  
} 5FxU=M1gF  
} >.|gmo>b  
} @Rm/g#!h"  
LNkyV*TI  
} nmr>Aj8[  
AK HH{_  
选择排序: g:U ul4  
>YLm]7v}  
package org.rut.util.algorithm.support; v &n &i?  
g%trGW3{-  
import org.rut.util.algorithm.SortUtil; 3QpT O,  
tS$Ne7yk e  
/** /Ny&;Y  
* @author treeroot +Sfv.6~v  
* @since 2006-2-2 e=2D^ G#qE  
* @version 1.0 F*f)Dv$p  
*/ ]_s]Q_+E  
public class SelectionSort implements SortUtil.Sort { LxT] -  
YVT^}7#  
/* DZue.or  
* (non-Javadoc) s><co]  
* AM>:At Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JFZ p^{  
*/ bb{+  
public void sort(int[] data) { 8{C3ijR  
int temp; 9[`6f8S_$  
for (int i = 0; i < data.length; i++) { :9}*p@  
int lowIndex = i; |w DCIHzQ  
for (int j = data.length - 1; j > i; j--) { !T*izMX}  
if (data[j] < data[lowIndex]) { 9=|5-? ^  
lowIndex = j; !r<7]nwV  
} =>G A_  
} #^Y,,GA  
SortUtil.swap(data,i,lowIndex); q`P:PRgM  
} `f'P  
} S4w/ kml3  
VZ8L9h<{"  
} ,P}c92;  
t(Uoi~#[  
Shell排序: #XsqTK_nk  
9L};vkYk#  
package org.rut.util.algorithm.support; F r~xN!  
e\<I:7%Rg  
import org.rut.util.algorithm.SortUtil; x>^S..K}L%  
Gsb]e  
/** 8/:\iPk0  
* @author treeroot Q*I/mUP&f  
* @since 2006-2-2 "q$M\jK#V  
* @version 1.0  X_lNnk  
*/ XL:7$  
public class ShellSort implements SortUtil.Sort{ pfT7  
(I$hw"%&  
/* (non-Javadoc) :O7J9K|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6XP>p$-  
*/ tVOx  
public void sort(int[] data) { $[Fk>d  
for(int i=data.length/2;i>2;i/=2){ .NKN2  
for(int j=0;j insertSort(data,j,i); 4:.M*Dz  
} :9<5GF(  
} &~i1 @\]  
insertSort(data,0,1); *4ID$BmO  
} (< h,R@:  
"P6MLf1  
/** /=N`P &R#  
* @param data ,0~=9dR  
* @param j T4[eBO  
* @param i 0PN{ +<? .  
*/ 6[cMPp x  
private void insertSort(int[] data, int start, int inc) { &\LbajP:+  
int temp; tm$3ZzP4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .MKxHM7  
} Fq8Z:;C8  
} [(C lvGx  
} KLX>QR@  
w^~,M3(+)1  
} =6Z 1yw7s  
[lf[J&}X  
快速排序: m\(a{x  
w"~T5%p  
package org.rut.util.algorithm.support; hYLu   
]?^mb n  
import org.rut.util.algorithm.SortUtil; ,D8 Tca\v  
BEw(SQH  
/** ?IK[]=!  
* @author treeroot ||hd(_W8  
* @since 2006-2-2 aePk^?KbB  
* @version 1.0 YJ6Xq||_  
*/ k@?<Aw8 _X  
public class QuickSort implements SortUtil.Sort{ :0J;^@   
5lT lZRH1  
/* (non-Javadoc) PH6uP]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ="V6z$N  
*/ LVSJK.B  
public void sort(int[] data) { mz47lv1?  
quickSort(data,0,data.length-1); Hxjh P(  
} C`fQ` RL\  
private void quickSort(int[] data,int i,int j){ }u :sh >2  
int pivotIndex=(i+j)/2; m 9r X  
file://swap (UCWSA7oc  
SortUtil.swap(data,pivotIndex,j); b<%6aRC\  
#}.db?[Rv  
int k=partition(data,i-1,j,data[j]); dP82bk/e  
SortUtil.swap(data,k,j); C[75 !F   
if((k-i)>1) quickSort(data,i,k-1); Qk((H~I}  
if((j-k)>1) quickSort(data,k+1,j); d;`JDT  
dI`b AP;\  
} y@F{pr+dA  
/** !^y'G0  
* @param data :>|[ o&L  
* @param i GE|V^_|i  
* @param j vV%w#ULxE~  
* @return G3q\Z`|3h  
*/ u BvN*LQ  
private int partition(int[] data, int l, int r,int pivot) { =oBV.BST u  
do{ E;yP.<PW  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ig6F!p  
SortUtil.swap(data,l,r); bYiaJ  
} YQ]W<0(  
while(l SortUtil.swap(data,l,r); `On%1%k8  
return l; :V&#Oo  
} -LUKYGBK  
/)j:Y:5  
} {a(TT)d  
2QdqVwm  
改进后的快速排序: {<V{0 s%  
U<zOR=_  
package org.rut.util.algorithm.support; PAJt M  
rAgb<D@,H  
import org.rut.util.algorithm.SortUtil; 6]M(ElV1H  
X4gs{kx}|  
/** +5voAx!  
* @author treeroot h DCR>G  
* @since 2006-2-2 3{CXIS  
* @version 1.0 p~qdkA<  
*/ MFRM M%`  
public class ImprovedQuickSort implements SortUtil.Sort { }}<^f M  
s$A|>TOY  
private static int MAX_STACK_SIZE=4096; +ps(9O/B>  
private static int THRESHOLD=10; 1jDN=hIl  
/* (non-Javadoc) /@:I\&{f'9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [&51m^  
*/ m)V%l0  
public void sort(int[] data) { ^I7iEv  
int[] stack=new int[MAX_STACK_SIZE]; dj 4:r!5_  
29:] cL(5  
int top=-1; o!:   
int pivot; K1Mn_)%  
int pivotIndex,l,r; y-9Mm9J  
12.|Ed*72  
stack[++top]=0; `KB;3L  
stack[++top]=data.length-1; /; w(1)B  
S/V%<<[>p]  
while(top>0){ 1GE[*$vuq  
int j=stack[top--]; =XVw{\#9 b  
int i=stack[top--]; + JsMYv  
bZLY#g7L"  
pivotIndex=(i+j)/2; FG/1!8F  
pivot=data[pivotIndex]; ka0MuQ M  
uWkW T.>$  
SortUtil.swap(data,pivotIndex,j); XU_gvz  
f["c,,[  
file://partition ^? }-x  
l=i-1; XkDIP4v%  
r=j; I|(r1.[K  
do{ "\3C)Nz?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~m3Q^ue  
SortUtil.swap(data,l,r); yhc}*BMZ  
} 3s;^p,9 Y  
while(l SortUtil.swap(data,l,r); *mby fu0q  
SortUtil.swap(data,l,j); ;?4EVZ#o  
%py3fzg  
if((l-i)>THRESHOLD){ T,r?% G{XE  
stack[++top]=i; 6/6M.p  
stack[++top]=l-1; g%TOYZr!X  
} BlnR{Y  
if((j-l)>THRESHOLD){ 1 8%+ Hy=  
stack[++top]=l+1; GCZx-zD~>  
stack[++top]=j; 9(6f:D  
} 3N257]  
Lcb5^e?'Q  
} Y7BmW+  
file://new InsertSort().sort(data); gamE^Ee  
insertSort(data); a`I \19p]  
} >cJix 1  
/** 0fu*}v"  
* @param data 8 kvF~d ;  
*/ z9Z4MXl  
private void insertSort(int[] data) { {>g{+Eq  
int temp; ia@ |+r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z-:T')#Cf  
} @CMEmgk~  
} "zj[v1K9-A  
} T[Lz4;TRk5  
[n4nnmM  
} Wz%H?m:g#  
jh(T?t$&  
归并排序: jIEntk  
G>=Fdt7Oc  
package org.rut.util.algorithm.support; 9A~w2z\G  
rtNYX=P  
import org.rut.util.algorithm.SortUtil; U$|q]N  
e.\dqt~%y  
/** <p/zm}?')  
* @author treeroot DG?g~{Y~b  
* @since 2006-2-2 t'1g+g  
* @version 1.0 bFjH* ~ P  
*/ ,BUrZA2\U$  
public class MergeSort implements SortUtil.Sort{ 1oe,>\\  
>dx/k)~~-L  
/* (non-Javadoc) `*6|2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [;H-HpBaa  
*/ DL`8qJ'mJs  
public void sort(int[] data) { IdqCk0lVD  
int[] temp=new int[data.length]; j"K^zh  
mergeSort(data,temp,0,data.length-1); C#-HWoSi  
} }{y)a<`  
p4V*%A&w  
private void mergeSort(int[] data,int[] temp,int l,int r){ |sdG<+  
int mid=(l+r)/2; NOg/rDs'{  
if(l==r) return ; 0<7sM#sI!  
mergeSort(data,temp,l,mid); auga`*  
mergeSort(data,temp,mid+1,r); Sl/]1[|mb  
for(int i=l;i<=r;i++){ u@1 2:U$  
temp=data; 9 ,:#Q<UM  
} k@ <dru  
int i1=l; BmKf%:l}  
int i2=mid+1; P -NR]f  
for(int cur=l;cur<=r;cur++){ VCfHm"'E8  
if(i1==mid+1) -0UR%R7q  
data[cur]=temp[i2++]; .fbY2b([  
else if(i2>r) ?5FlbiT  
data[cur]=temp[i1++]; !B 4zU:d  
else if(temp[i1] data[cur]=temp[i1++];  9u^M{6  
else )X?oBNsj  
data[cur]=temp[i2++]; FRuPv6  
} {CV+1kz  
} r4pX4 7H  
d(|q&b:  
} " i:[|7  
q>Di|5<y  
改进后的归并排序: <o/!M6^:  
r1}^\C  
package org.rut.util.algorithm.support; "MU-&**  
<pfl>Uf  
import org.rut.util.algorithm.SortUtil; +: x[cK  
9w- )??  
/** D6A u)1y=&  
* @author treeroot .u>[m.  
* @since 2006-2-2 D%~tU70a  
* @version 1.0 7mq&]4-G  
*/ m^!:n$  
public class ImprovedMergeSort implements SortUtil.Sort { 4j~q,# $LW  
~n- Px)  
private static final int THRESHOLD = 10; XVkw/ l  
+}O -WX?  
/* #B<EMGH  
* (non-Javadoc) }[Z'Sg]s  
* g3].STz6w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OKAU*}_  
*/ 9j|v D  
public void sort(int[] data) { dzEi^* (8  
int[] temp=new int[data.length]; K(i}?9WD  
mergeSort(data,temp,0,data.length-1);  tPQ|znB|  
} r[4n2Mys  
(IBT|K  
private void mergeSort(int[] data, int[] temp, int l, int r) { XjF@kQeM=  
int i, j, k; j1KNgAo<4  
int mid = (l + r) / 2; =B9-}]DDO  
if (l == r) 5]>*0#C S  
return; a;t}'GQGk  
if ((mid - l) >= THRESHOLD) ._^}M<o L  
mergeSort(data, temp, l, mid); 0W(mx-[H/  
else n74\{`8]o  
insertSort(data, l, mid - l + 1); y92R}e\M  
if ((r - mid) > THRESHOLD) +9w[/n^,G  
mergeSort(data, temp, mid + 1, r); .ojEKu+EJ'  
else gYhY1Mym  
insertSort(data, mid + 1, r - mid); 9T;4aP>6j#  
tGgxID  
for (i = l; i <= mid; i++) { <Cv(@A->  
temp = data; [K&%l]P7  
} [ N|X  
for (j = 1; j <= r - mid; j++) { !{g<RS( c  
temp[r - j + 1] = data[j + mid]; rz@q W2  
} &J)<1!|  
int a = temp[l]; ID43s9  
int b = temp[r]; is4}s,]$6  
for (i = l, j = r, k = l; k <= r; k++) { I )rO|  
if (a < b) { ;.V/ngaj  
data[k] = temp[i++]; .JPN';  
a = temp; IplOXD  
} else { *Jgi=,!m  
data[k] = temp[j--]; 8 MQq3  
b = temp[j]; ^FKiVKI:  
} S3\NB3@qC&  
} eCYPd-d  
} Fp/{L  
C3}:DIn"w  
/** >G:Q/3jh  
* @param data H].|K/-p  
* @param l 1Ng+mT  
* @param i >\d&LLAe  
*/ oT-gZedW(  
private void insertSort(int[] data, int start, int len) { |Y>Jf~SN  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7q+D}+ Xf  
} 1(gs({  
} 7v*gwBH  
} ZeP=}0TGjn  
} zY*9M3(X  
QselW]  
堆排序: j|t=%*  
3[ xdls  
package org.rut.util.algorithm.support; ECOJ .^  
~Q&J\'GQH  
import org.rut.util.algorithm.SortUtil; HU'Mi8xxy  
M76p=*  
/** 5EFt0?G   
* @author treeroot 2#>;cn\  
* @since 2006-2-2 hZx&j{  
* @version 1.0 S@/{34,  
*/ 4rU/2}. q  
public class HeapSort implements SortUtil.Sort{ jVQy{8{G  
fzIs^(:fl  
/* (non-Javadoc) ; ~pgF_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r[S(VPo[()  
*/ pR61bl)  
public void sort(int[] data) { wtw=RA  
MaxHeap h=new MaxHeap(); w"v!+~/9  
h.init(data); yp#!$+a}  
for(int i=0;i h.remove(); (xHmucmwp  
System.arraycopy(h.queue,1,data,0,data.length); zmo2uUEd  
} i "h\*B=  
w:t~M[kTW  
private static class MaxHeap{ $*ff]>#  
DZSS  
void init(int[] data){ :C:6bDQ  
this.queue=new int[data.length+1]; %L=e%E=m  
for(int i=0;i queue[++size]=data; *'>_XX  
fixUp(size); xDo0bR(  
} jH< #)R  
} 1&|]8=pG7  
{DRk{>K,  
private int size=0; *?FVLE  
.d<K`.O ;  
private int[] queue; tF:AnNp=  
o-\h;aQJ  
public int get() { gXxi; g  
return queue[1]; <Ht"t]u*Bn  
} ?9`j1[0  
1Gsh%0r3  
public void remove() { 2_q/<8t  
SortUtil.swap(queue,1,size--); %e~xO x  
fixDown(1); {<42PJtPY  
} d4| )=  
file://fixdown /j~~S'sw  
private void fixDown(int k) { AY /9Io-  
int j; y b hFDx  
while ((j = k << 1) <= size) { 731Lz*IFg  
if (j < size %26amp;%26amp; queue[j] j++; K!6T8^JH  
if (queue[k]>queue[j]) file://不用交换 hY`<J]-'`  
break; ]3LLlXtK[  
SortUtil.swap(queue,j,k); ZSuoD$~k[  
k = j; TxJk.c  
} OG5{oH#K  
} z@,pT"rb  
private void fixUp(int k) { 1}d F,e  
while (k > 1) { Va8 }JD  
int j = k >> 1; UY3)6}g6  
if (queue[j]>queue[k]) ZC?~RXL(  
break; t<45[~[  
SortUtil.swap(queue,j,k); (Ceruo S  
k = j; i!a!qE.1  
} `NIb? /!f  
} QTHY{:Rmu  
t\M6 d6  
} eC-&.Fl  
 NNt n  
} 90vWqL!  
ZFtx&vr P  
SortUtil: T8S&9BM7  
L1SX2F8  
package org.rut.util.algorithm; ?w:\0j5 ~  
k4'] q  
import org.rut.util.algorithm.support.BubbleSort; i]ZGq7YJ%  
import org.rut.util.algorithm.support.HeapSort; 3~`P8 9  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y/sav;  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'gY?=,dF>  
import org.rut.util.algorithm.support.InsertSort; SY,ns*>1F  
import org.rut.util.algorithm.support.MergeSort; &]TniQH  
import org.rut.util.algorithm.support.QuickSort; bJ:5pBJ3  
import org.rut.util.algorithm.support.SelectionSort; =Zj 7dn;EN  
import org.rut.util.algorithm.support.ShellSort; hk?i0#7W  
HZ9>4G3  
/** {y"Kn'1  
* @author treeroot JLd%rM\m  
* @since 2006-2-2 nE]rPRU}[  
* @version 1.0 YuhfPa  
*/ n*\o. :f  
public class SortUtil { Ae2N"%Ej  
public final static int INSERT = 1; .q 2r!B  
public final static int BUBBLE = 2; S)EF&S(TC  
public final static int SELECTION = 3; <V^o.4mOg>  
public final static int SHELL = 4; HM% +Y47a  
public final static int QUICK = 5; U^_\V BAk  
public final static int IMPROVED_QUICK = 6; bc(MN8b]j  
public final static int MERGE = 7; -C2!`/U  
public final static int IMPROVED_MERGE = 8; #w;"s*  
public final static int HEAP = 9; n*[ZS[I  
!j$cBf4  
public static void sort(int[] data) { Ce+:9}[  
sort(data, IMPROVED_QUICK); mZiKA-t  
} v.RA{a 9  
private static String[] name={ -|V#U`mwF  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H,D5)1Uu  
}; JZ}zXv   
Q&I #  
private static Sort[] impl=new Sort[]{ Uh0g !zzp  
new InsertSort(), wqG#jC!5  
new BubbleSort(), zfop-qDOc  
new SelectionSort(), 6.]~7n  
new ShellSort(), H'i\N?VL  
new QuickSort(), 9wx]xg4l"  
new ImprovedQuickSort(), AJ\gDjj<  
new MergeSort(), Y2VfJ}%Q  
new ImprovedMergeSort(), Tf#Op v)  
new HeapSort() g%J\YRo  
}; 9,8/DW.K  
FRxR/3&  
public static String toString(int algorithm){ d./R;Z- I{  
return name[algorithm-1]; @;O"-7Kk  
} JL {H3r&/S  
{+lU4u  
public static void sort(int[] data, int algorithm) { s17)zi,?4  
impl[algorithm-1].sort(data); "`;-5dg  
} LGc8w>qE  
l$5nv5r  
public static interface Sort { ]EK(k7nH  
public void sort(int[] data); *C55DO^w  
} 9 m8KDB[N  
* K$ U[$s  
public static void swap(int[] data, int i, int j) { *-ys}sX  
int temp = data; T @^ S:K  
data = data[j]; %f<>Kwr`2  
data[j] = temp; 2=?3MXcjy  
} fln[Q2zl  
} w7` pbcY,  
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