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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。 u\Y3h:@u  
插入排序: D`R~d;U~  
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package org.rut.util.algorithm.support; IxaF *4JG  
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import org.rut.util.algorithm.SortUtil; E<sd\~~A:  
/** JA~q}C7A7o  
* @author treeroot Y49&EQ  
* @since 2006-2-2 N;gY5;0m  
* @version 1.0 aM+Am,n`@  
*/ B *%ey?  
public class InsertSort implements SortUtil.Sort{ 0Ua&_D"  
nrg$V>pD  
/* (non-Javadoc) 2p~}<B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OJiwI)a9  
*/ (0E<Fz V  
public void sort(int[] data) { 9DdR"r'7  
int temp; WG*),P?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L%jIU<?Z7  
} hBi/lHu'  
} a:Nf +t  
} |]5`T9K@b#  
`BVXF#sb  
} K[yP{01  
54].p7  
冒泡排序: fcO|0cQ  
M+*K-zt0  
package org.rut.util.algorithm.support; W*B=j[w  
8SA" bH:  
import org.rut.util.algorithm.SortUtil; +o?;7  
n8tw8o%&[  
/** 9yz@hdG  
* @author treeroot %n 6NVi_[  
* @since 2006-2-2  |A\o  
* @version 1.0 C5g9Gg  
*/ }N&? 8s=  
public class BubbleSort implements SortUtil.Sort{ ?|~KF:,#}  
_y&XFdp  
/* (non-Javadoc) \q\"=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0S96x}]J B  
*/ z*B?Hw),  
public void sort(int[] data) { Xdf4%/Op  
int temp; C1>zwU_zo  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 05:?5M4};  
if(data[j] SortUtil.swap(data,j,j-1); _F8THYg (  
} ST2:&xH(  
} zf>*\pZE  
} ;;6$d{  
} ~ #7@;C<nt  
8@Bm2?$}g  
} &(lQgi+^!  
P\WFm   
选择排序: <HtGp6q  
@]!9;?so  
package org.rut.util.algorithm.support; 6_:I~TTX  
D|*yeS4>  
import org.rut.util.algorithm.SortUtil; 33 ; '6/  
IXG@$O?y/  
/** N0%q 66]1  
* @author treeroot k*v${1&  
* @since 2006-2-2 a@J/[$5  
* @version 1.0 n =WH=:&  
*/ 2Z5_@Y  
public class SelectionSort implements SortUtil.Sort { )|_L?q#w!'  
IEfYg(c0U  
/* {1qr6P,"  
* (non-Javadoc) 1[J|AkN  
* JfY(};&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  S'\e"w  
*/ ,Js-'vX  
public void sort(int[] data) { % m"Qg<  
int temp; ,,!P-kK$  
for (int i = 0; i < data.length; i++) { +u&[ j/  
int lowIndex = i; F-$!e?,H  
for (int j = data.length - 1; j > i; j--) { s/.P/g%tA>  
if (data[j] < data[lowIndex]) { wqi0%Cu*  
lowIndex = j; Z~<=I }@  
} &>B"/z  
} 8Ihl}aguW  
SortUtil.swap(data,i,lowIndex); jZC[_p;  
} JEaTDV_  
} d14n>  
o2'Wu:Y"  
} 8N+T=c  
0n'v F&E8  
Shell排序: }%z%}V@(&  
;>L8&m)R5  
package org.rut.util.algorithm.support; K8Q3~bMf  
P@f#DX )  
import org.rut.util.algorithm.SortUtil; k'k}/Hxub  
C fM[<w   
/** vQ]d?Tp  
* @author treeroot ([ -i5  
* @since 2006-2-2 [uK{``"  
* @version 1.0 CmV &+C$V%  
*/ R7U%v"F>`  
public class ShellSort implements SortUtil.Sort{ jJ-C\ v  
uT'l.*W6i  
/* (non-Javadoc) ];lZ:gT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e#,(a  
*/ [sjkm+ ?  
public void sort(int[] data) { % P E x  
for(int i=data.length/2;i>2;i/=2){ zj(V\y&H  
for(int j=0;j insertSort(data,j,i); #]6{>n1*+w  
} hlDB'8  
} ma+AFCi  
insertSort(data,0,1); ~\AF\n%  
} 0#DEh|?  
:o .+<_ &  
/** =JW-EQ6[T  
* @param data !><asaB]1  
* @param j /`7+Gy<  
* @param i |35OA/O?X  
*/ s'oNW  
private void insertSort(int[] data, int start, int inc) { [61*/=gWe  
int temp; 2aX*|DGpw  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f*B-aj#  
} dJ m9''T')  
} fBctG~CJH  
} b,YNCb]H  
0#Lmajs  
} C l,vBjl h  
* m^\&  
快速排序: vy *-"=J  
D4,>g )B  
package org.rut.util.algorithm.support; b0YEIV<$  
:)D7_[i  
import org.rut.util.algorithm.SortUtil; =u?aP}zc  
-YAtM-VL  
/** FOk;=+  
* @author treeroot g_`a_0v  
* @since 2006-2-2 9$Z0mzk  
* @version 1.0 ~r!(V;k{  
*/ CUYA:R<)  
public class QuickSort implements SortUtil.Sort{ 3V?x&qlP>  
J-Tiwl  
/* (non-Javadoc) 4k-Ak6s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $\Y&2&1s  
*/ BjsT 9?6W/  
public void sort(int[] data) { qSB&Q0T  
quickSort(data,0,data.length-1); WA"~6U*  
} TKv!wKI  
private void quickSort(int[] data,int i,int j){ uBa<5YDF  
int pivotIndex=(i+j)/2; N{S) b  
file://swap p/?o^_s  
SortUtil.swap(data,pivotIndex,j); 3_Xu3hNH!  
flo$[]`.7  
int k=partition(data,i-1,j,data[j]); d_M+W@{  
SortUtil.swap(data,k,j); Y55u -9|N  
if((k-i)>1) quickSort(data,i,k-1); V(F9=r<X  
if((j-k)>1) quickSort(data,k+1,j); _OTVQo Ap  
U]~@_j  
} D,ZLo~  
/** xBA"w:<  
* @param data )\=xPfs  
* @param i w+R7NFq  
* @param j *H/3xPh,*  
* @return 6<<"9mxK  
*/ 8zD>t~N2C  
private int partition(int[] data, int l, int r,int pivot) { xF8n=Lc  
do{ robg1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0^gY4qx[u  
SortUtil.swap(data,l,r); T5."3i  
} Vv}R S@4U  
while(l SortUtil.swap(data,l,r); LK~aLa5wG  
return l; ]|.ked  
} 3@Mh* \;\b  
{9U!0h-2"  
} fk5'v   
[jzsB:;XB&  
改进后的快速排序: AtG~!)hG  
TXmS$q   
package org.rut.util.algorithm.support; 5b7(^T^K  
kFWwz^x  
import org.rut.util.algorithm.SortUtil; 'UIFP#GtFO  
o5tCbsHj-  
/** MhD'  
* @author treeroot "mW'tm1+  
* @since 2006-2-2 gCb+hQq\  
* @version 1.0 >8"Svt$  
*/ iVI&  
public class ImprovedQuickSort implements SortUtil.Sort { r |C.K  
{fzX2qMZ]  
private static int MAX_STACK_SIZE=4096; bGH#s {'5  
private static int THRESHOLD=10; gmRc4o  
/* (non-Javadoc) }q.D)'g_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |(3 y09  
*/ /{i~-DVME  
public void sort(int[] data) { nc k/Dw  
int[] stack=new int[MAX_STACK_SIZE]; 1@}F8&EZ  
\Y)HSJR;e  
int top=-1; %Hbq3U30  
int pivot; 112 WryS  
int pivotIndex,l,r; qjP~F  
n[iwi   
stack[++top]=0; 6:#o0OeBP  
stack[++top]=data.length-1; WMf / S"=  
#&}- q RA  
while(top>0){ CUI3^;&S  
int j=stack[top--]; {5E8eQ  
int i=stack[top--]; bE !SW2:M  
})/P[^  
pivotIndex=(i+j)/2; Yub}AuU`v  
pivot=data[pivotIndex]; S{+t>en  
x|0C0a\"A  
SortUtil.swap(data,pivotIndex,j); 1_] X  
gu(:'5cX  
file://partition Svn7.Ivep  
l=i-1; _YF>Y=D-  
r=j; NZB*;U~t  
do{ ]!B0= XP  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); f,TW|Y'{g  
SortUtil.swap(data,l,r); MeEa|.  
} Ay?<~)H  
while(l SortUtil.swap(data,l,r); rv*{[K  
SortUtil.swap(data,l,j); L3, /7  
|IcW7(  
if((l-i)>THRESHOLD){ ?}cmES kX@  
stack[++top]=i; ,<rC,4-F<  
stack[++top]=l-1; h+Co:pr  
} Z@0tZ^V{  
if((j-l)>THRESHOLD){ Zd[rn:9\  
stack[++top]=l+1; Ek)drt7cy  
stack[++top]=j; t{]Ew4Y4%O  
} OTXZdAv  
5~[7|Y  
}  ##rkyd  
file://new InsertSort().sort(data); R5uG.Oj-2  
insertSort(data); b w P=f.  
} ,>a!CnK=  
/** j&d5tgLB  
* @param data %GhI0F #  
*/ 'Cc~|gOgD  
private void insertSort(int[] data) { >3uNh:|>/  
int temp; Z=a%)Ki?Ag  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); " ]S  
} 7S a9  
} R.^]{5  
} f*o  
i/9iM\2  
} &>JP.//spi  
|(>`qL{|  
归并排序: QoZV 6  
/+Z*)q+SbT  
package org.rut.util.algorithm.support; &u>dKf)5  
3a?-UT!  
import org.rut.util.algorithm.SortUtil; -l= 4{^pK  
Z =+Z96  
/** .4+R ac  
* @author treeroot 5kiW@{m  
* @since 2006-2-2 <w2h@ea  
* @version 1.0 1rm\u%  
*/ &b} \).5E  
public class MergeSort implements SortUtil.Sort{ uHgq"e  
LiG$M{0  
/* (non-Javadoc) Z2g'&,uc#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |.N[NY  
*/ Bh3F4k2bg7  
public void sort(int[] data) { }>@\I^Xm,  
int[] temp=new int[data.length]; _Si=Jp][  
mergeSort(data,temp,0,data.length-1); bJ^h{]  
} \Bo%2O%4  
k1wIb']m]z  
private void mergeSort(int[] data,int[] temp,int l,int r){ 2l<2srEK  
int mid=(l+r)/2; PQ&*(G  
if(l==r) return ; #Z%" ?RJ  
mergeSort(data,temp,l,mid); |MwV4^  
mergeSort(data,temp,mid+1,r); I1<WHq  
for(int i=l;i<=r;i++){ A=N$5ZJ  
temp=data; oYqH l1cs  
} ZNQ x;51  
int i1=l; d0(zB5'}  
int i2=mid+1; E4 X6f  
for(int cur=l;cur<=r;cur++){ LikcW#  
if(i1==mid+1) l f>/  
data[cur]=temp[i2++]; k =! Q  
else if(i2>r) ~:DL{ZeEb  
data[cur]=temp[i1++]; ?:"ABkL|+Y  
else if(temp[i1] data[cur]=temp[i1++]; /|?$C7%a\D  
else h&0zR#t  
data[cur]=temp[i2++]; A=<7*E  
} V 0Bl6  
} &hYgu3O  
b$_81i  
} P[3i!"O>  
=~1EpZ  
改进后的归并排序: eAy,T<#  
,H]%4@]|o  
package org.rut.util.algorithm.support; S/]\GG{  
gb_Y]U  
import org.rut.util.algorithm.SortUtil; Z8SwW<{ $  
enQ*uMKd^  
/** =QqH`.3  
* @author treeroot kXz ~ez 7  
* @since 2006-2-2 .#( vx;  
* @version 1.0 Q-<]'E#\(  
*/ #V>R#Oh}  
public class ImprovedMergeSort implements SortUtil.Sort { P 9?cp{*  
y[_k/.1  
private static final int THRESHOLD = 10; (]]hSkE  
FZi@h  
/* g|~px$<iY  
* (non-Javadoc) h(|T.  
* K\K& K~Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cN,*QN  
*/ }3#\vn0gT  
public void sort(int[] data) { <,} h8;Fr  
int[] temp=new int[data.length]; RjW wsC~B  
mergeSort(data,temp,0,data.length-1); Q %o@s3~O  
} H>TO8;5(  
c -+NWC  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]\pi!oa  
int i, j, k; rFXdxRP;M  
int mid = (l + r) / 2; v=llg ^  
if (l == r) s=8H< 'l  
return; v) n-  
if ((mid - l) >= THRESHOLD) s$M(-"mg  
mergeSort(data, temp, l, mid); ]C \+b <  
else )?rq8VO  
insertSort(data, l, mid - l + 1); a4*v'Xc5  
if ((r - mid) > THRESHOLD) Q"&Mr+  
mergeSort(data, temp, mid + 1, r); *'Yy@T8M  
else R"t#dG]1t  
insertSort(data, mid + 1, r - mid); S=qh7ML  
KF rsXf  
for (i = l; i <= mid; i++) { F-m%d@P&X  
temp = data; !r njmc  
} F6\{gQ<E  
for (j = 1; j <= r - mid; j++) { d( v"{N}  
temp[r - j + 1] = data[j + mid]; OUBGbld  
} D3Q+K  
int a = temp[l]; &N} "4  
int b = temp[r]; e9LX0=  
for (i = l, j = r, k = l; k <= r; k++) { ~` tuPk~l  
if (a < b) { -@>{q/  
data[k] = temp[i++]; i2<z"v63  
a = temp; u&zY>'}zm  
} else { 5 ^{~xOM5  
data[k] = temp[j--]; *Soi  
b = temp[j]; R$&;  
} 5Kzt8Tv[  
} l(>6Yq  
} Pe%[d[ k  
[:X@|,1V!L  
/** j,YrM?Xdo  
* @param data tT]@yo|?e/  
* @param l 6"-$WUlg  
* @param i j<^!"_G]*?  
*/ 5%,3)H{;t  
private void insertSort(int[] data, int start, int len) { o5Oig  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _}R$h=YD  
} Z '5itN^  
} YSnh2 Bq  
} (5$Ge$  
} Z ]A |"6<  
K=f4<tP_  
堆排序: m212 gc0u  
WDc[+Xyw  
package org.rut.util.algorithm.support; XFhH+4#]  
2!%)_<  
import org.rut.util.algorithm.SortUtil; 3bRxV @0.  
Gk:fw#R  
/** NM. e4  
* @author treeroot o0r&w;!  
* @since 2006-2-2 B!'K20"gF  
* @version 1.0 IyO 0~Vx>  
*/ 4  %0s p  
public class HeapSort implements SortUtil.Sort{ hW*o;o7u  
<'\Nv._2a  
/* (non-Javadoc) u&~Xgq5[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J^+w]2`S  
*/ w{tA{{  
public void sort(int[] data) { A{_CU-,  
MaxHeap h=new MaxHeap(); v47' dC  
h.init(data); ".}R$ W  
for(int i=0;i h.remove(); WuK<?1meN  
System.arraycopy(h.queue,1,data,0,data.length); V!:!c]8F  
} e:G~P u`  
> .wZEQ6QK  
private static class MaxHeap{ eT%x(P  
D,IT>^[^7  
void init(int[] data){ HlE8AbEg  
this.queue=new int[data.length+1]; J&6p/'UPZ  
for(int i=0;i queue[++size]=data; >DRxF5b{  
fixUp(size); @5Tl84@Q  
} \;7U:Y$v  
} Cmx<>7fN  
P>_O :xD  
private int size=0; 2Bt/co-~4  
9a_P 9s3w  
private int[] queue; SQ) BS/8A  
;lmg0dtJ  
public int get() { Gamn,c9  
return queue[1]; <EC"E #p  
} aImzK/  
)"TVR{I%B  
public void remove() { rxp|[>O<  
SortUtil.swap(queue,1,size--); C^q|(G)  
fixDown(1); Jt$YSp=!!  
} &g?GF\Y  
file://fixdown g1t6XVS$9  
private void fixDown(int k) { QFnuu-82"  
int j; ld(60?z>FH  
while ((j = k << 1) <= size) { i9 aR#  
if (j < size %26amp;%26amp; queue[j] j++; !Yc:yF  
if (queue[k]>queue[j]) file://不用交换 !gI0"p?  
break; o@A`AA9  
SortUtil.swap(queue,j,k);  ~&~4{  
k = j; c|<F8 n  
} hNc8uV{r=  
} CVO_F=;  
private void fixUp(int k) { IJf%OA>v  
while (k > 1) { &r[f ;|o  
int j = k >> 1; \]>821r  
if (queue[j]>queue[k]) /Am9w$_T[  
break; rl.K{Uad  
SortUtil.swap(queue,j,k); % Z6Q/+#fn  
k = j; 7nPg2K&  
} 59nRk}^$se  
} ]*NYuEgc  
@,<jPR.  
} H:~bWd'iz  
n1\$|[^6  
} "I56l2dxd  
}8^qb5+!3  
SortUtil:  ]j0+4w  
{^oohW -  
package org.rut.util.algorithm; "e-z 2G@z  
knO X5UnS  
import org.rut.util.algorithm.support.BubbleSort; gb,ZN^3<-  
import org.rut.util.algorithm.support.HeapSort; ltOS()[X  
import org.rut.util.algorithm.support.ImprovedMergeSort; g:uVl;>  
import org.rut.util.algorithm.support.ImprovedQuickSort; J *LPv9)  
import org.rut.util.algorithm.support.InsertSort; L\mF[Kd#+T  
import org.rut.util.algorithm.support.MergeSort; ?EUg B\  
import org.rut.util.algorithm.support.QuickSort; La6 9or   
import org.rut.util.algorithm.support.SelectionSort; rQzdHA  
import org.rut.util.algorithm.support.ShellSort; ";U~wZW_  
aH;AGbp  
/** huqtk4u  
* @author treeroot ql9n`?Q  
* @since 2006-2-2 ~Jf(M ^E  
* @version 1.0 X!g;;DB\  
*/ ?[#w*Am7  
public class SortUtil { TJYhgna  
public final static int INSERT = 1; e,C c.T\o  
public final static int BUBBLE = 2; _V3z!aI  
public final static int SELECTION = 3; 7s^b@&Le  
public final static int SHELL = 4; l]wfL;u  
public final static int QUICK = 5; KS#A*BRQ  
public final static int IMPROVED_QUICK = 6; 9{(q[C5m  
public final static int MERGE = 7; }S iR;2W  
public final static int IMPROVED_MERGE = 8; 1{/Cr K/o  
public final static int HEAP = 9; cQ1[x>OcU  
4!14: mq  
public static void sort(int[] data) { f:3cV(mC  
sort(data, IMPROVED_QUICK); {zZ)JWM<w  
} = V')}f~C  
private static String[] name={ '-myOM7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6}Y==GP t  
}; 0;x&\x7K  
W7C1\'T  
private static Sort[] impl=new Sort[]{ N!.o`4 "z  
new InsertSort(), BqJ|l7+  
new BubbleSort(), 7&,$  
new SelectionSort(), C'@I!m._i  
new ShellSort(), `(j~b=PP  
new QuickSort(), =m<b+@?T  
new ImprovedQuickSort(), io\t>_  
new MergeSort(), EkV#i  
new ImprovedMergeSort(), .hckZx /  
new HeapSort() n-K/d I  
}; Z>UM gu3c  
;8=Bee4  
public static String toString(int algorithm){ <LZ#A@]71  
return name[algorithm-1]; "~ =O`5V  
} S? Cd,WxT  
7/M[T\c  
public static void sort(int[] data, int algorithm) { /w?zO,!  
impl[algorithm-1].sort(data); <:AA R2=  
} w nBvJb]4l  
#[i3cn  
public static interface Sort { nKd'5f1  
public void sort(int[] data); .Ao _c x  
} ?6"U('y>n  
R{[v#sF >#  
public static void swap(int[] data, int i, int j) { "KF]s.  
int temp = data; !pj&h0CR  
data = data[j]; BNk>D|D;  
data[j] = temp; S['rTuk  
} aAP86MHO  
} ^KD1dy3(  
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