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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。 bbm\y] !t  
插入排序: ,'#TdLe  
qA*~B'  
package org.rut.util.algorithm.support; A~ya{^}  
OLw]BJXYaE  
import org.rut.util.algorithm.SortUtil; ul{x|R  
/**  0^;2  
* @author treeroot nhI+xqfn  
* @since 2006-2-2 jm0p%%z  
* @version 1.0 ">uN={Iy  
*/ j0=6B  
public class InsertSort implements SortUtil.Sort{ ZsGvv]P  
7Q 3!= b  
/* (non-Javadoc) Q=~"xB8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %&ejO= r  
*/ 'H1~Zhv  
public void sort(int[] data) { ?W/.'_  
int temp; b|#=kPVgL}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uo F.f$%"  
} z2=bbm:  
} =]5tYIU  
} Y\xEPh  
>7U/TVd&  
} <'y<8gpM  
y]9R#\P/  
冒泡排序: =~^b  
^W |YE72Y  
package org.rut.util.algorithm.support; XcR=4q|7  
;Iu _*U9)  
import org.rut.util.algorithm.SortUtil; 43=v2P0=Tj  
<'Q6\R}:vC  
/** rxCzPF  
* @author treeroot *yq65yZi5  
* @since 2006-2-2 xATx2*@X2  
* @version 1.0 a`O'ZY  
*/ os V6=  
public class BubbleSort implements SortUtil.Sort{ ~id6^#&>  
h*w9{[L  
/* (non-Javadoc) )e(<YST  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fRp]  
*/ |r9<aVlK  
public void sort(int[] data) { *^>"  h@J  
int temp; An2 >]\L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ h5?^MRZS  
if(data[j] SortUtil.swap(data,j,j-1); E'iE#He  
} '%$Vmf)=  
} dX(JV' 18A  
} *ug~LK5Y.  
} 1U\ap{z@  
(s8b?Ol/  
} )~2\4t4|g  
S^O9}<2g  
选择排序: 41 F;X{Br  
@ @[xTyA  
package org.rut.util.algorithm.support; s$Vl">9#  
6w.E Sm  
import org.rut.util.algorithm.SortUtil; $6"sRI6u  
Vl.,e1)6  
/** 7x)Pt@c  
* @author treeroot ]b- 2:M  
* @since 2006-2-2 LV}R 9f  
* @version 1.0 2|pTw5z~  
*/ qS?o22  
public class SelectionSort implements SortUtil.Sort { =<]`'15"V  
HxI6_>n^I  
/* H'A N osv  
* (non-Javadoc) @9/I^Zk  
* j>8DaEfwx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o78u>Oy  
*/ rPH7 ]]  
public void sort(int[] data) { jY6GWsh:9  
int temp; 9r%fBiSk  
for (int i = 0; i < data.length; i++) { 161P%sGx2  
int lowIndex = i; uq5?t  
for (int j = data.length - 1; j > i; j--) { gt{kjrTv&  
if (data[j] < data[lowIndex]) { ^s~)"2 g  
lowIndex = j; 2A_1E \  
} r]9-~1T  
} *p/,Z2f  
SortUtil.swap(data,i,lowIndex); }`=7%b`-?  
} {4_s:+v0  
} l7`{O/hN  
7FH(C`uKi  
} ^0]0ss;##R  
(%_X{R'  
Shell排序: PUQ",;&y1  
T Q41i/{  
package org.rut.util.algorithm.support; k>&cHCS`*  
BX_yC=S  
import org.rut.util.algorithm.SortUtil; 9'MGv*Ho  
a1pp=3Pd?~  
/** ?LMQz=  
* @author treeroot ky2]%cw  
* @since 2006-2-2 21TR_0g&<  
* @version 1.0 JrcbJt  
*/ L<FXtBJ  
public class ShellSort implements SortUtil.Sort{ x3n9|Uud  
bM?gAY]mB8  
/* (non-Javadoc) l uP;P&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U7WYS8  
*/ W.3b]zcV  
public void sort(int[] data) { [!uzXVS3  
for(int i=data.length/2;i>2;i/=2){ * JK0X  
for(int j=0;j insertSort(data,j,i); ]i {yJ)i  
} )j;^3LiV3  
} puPI ^6y%  
insertSort(data,0,1); >/ay'EyY;>  
} Q`F1t  
O2fq9%lk  
/** Q6m8N  
* @param data Vn5T Jw  
* @param j 3\W/VBJJ  
* @param i ^kfqw0!  
*/ _ [k \S|iY  
private void insertSort(int[] data, int start, int inc) { .B]l@E-u  
int temp; ||hQ*X<m>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 40?RiwwD  
} &tH?m;V  
} ^QNc!{`  
} #@FA=p[%  
i~h@}0WR"  
} |Gic79b  
}{R*pmv$bN  
快速排序: F! =l r  
ZWkRoJXNi  
package org.rut.util.algorithm.support; Au,oX2$  
ZV gfrvZP  
import org.rut.util.algorithm.SortUtil; JpS}X\]i  
Et3I(X3  
/** ET.jjV  
* @author treeroot Y,s EM%  
* @since 2006-2-2 s|p I`  
* @version 1.0 X,Na4~JO(  
*/ 2 GRI<M  
public class QuickSort implements SortUtil.Sort{ >._d2.Q'  
_:Qh1 &h  
/* (non-Javadoc) %)j&/QdzF&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R!dC20IMvH  
*/ nL 5tHz:e  
public void sort(int[] data) { ~&RTLr#\*M  
quickSort(data,0,data.length-1); D|q~n)TW5  
} >[ B.y  
private void quickSort(int[] data,int i,int j){ &vrQ *jX  
int pivotIndex=(i+j)/2; $e+sqgU  
file://swap [rx9gOOa&  
SortUtil.swap(data,pivotIndex,j); V|u2(*  
<IR#W$[  
int k=partition(data,i-1,j,data[j]); -,")GA+[7  
SortUtil.swap(data,k,j); *s4|'KS2o  
if((k-i)>1) quickSort(data,i,k-1); x^K4&'</  
if((j-k)>1) quickSort(data,k+1,j); k ]NZ%.  
zA5nr`  
} vX:}tir[  
/** s!(R  
* @param data D;YfQQr  
* @param i HTh? &u\QG  
* @param j 2W+~{3[#  
* @return es7;eH*O9  
*/ ( eKgc  
private int partition(int[] data, int l, int r,int pivot) { `4*I1WZW  
do{ ;g0s1nz  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vgeqH[:  
SortUtil.swap(data,l,r); jt}Re,  
} ]r;rAOWVV  
while(l SortUtil.swap(data,l,r); +JErc)%  
return l; B''yW{  
} uq3pk3 )W9  
O&?i#@5#  
} Hf('BagBL  
b^HDN(v  
改进后的快速排序: cb_C2+%8NA  
rf0Z5.  
package org.rut.util.algorithm.support; r6F TpOF  
;7\Fx8"s[  
import org.rut.util.algorithm.SortUtil; (m3hD)!+y  
qy|bOl  
/** \d"\7SA  
* @author treeroot a{ST4d'T  
* @since 2006-2-2 d&^b=d FDu  
* @version 1.0 y11^q*}  
*/ Ke4oLF2  
public class ImprovedQuickSort implements SortUtil.Sort { \kQ)fk]^  
jz f~n~  
private static int MAX_STACK_SIZE=4096; ZFLmD|q#{  
private static int THRESHOLD=10; W5u5!L/  
/* (non-Javadoc) ~);4O8~.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z8=?Hu  
*/ M !6Fnj  
public void sort(int[] data) { GXZ="3W |  
int[] stack=new int[MAX_STACK_SIZE]; [h-6;.e  
8sj2@d  
int top=-1; z<eu=OD4t  
int pivot; P8c_GEna  
int pivotIndex,l,r; @_`r*Tb)dM  
5x@ U<  
stack[++top]=0; 7=fM}sk  
stack[++top]=data.length-1; 4(\1z6?D  
3.YH7rN  
while(top>0){ L9/'zhiZBx  
int j=stack[top--]; {APfSD_4  
int i=stack[top--]; w5z]=dN  
d_ =K (}eR  
pivotIndex=(i+j)/2; B <s+I#  
pivot=data[pivotIndex]; .Vt|;P}  
Mzg'$]N  
SortUtil.swap(data,pivotIndex,j); #:" ]-u^  
]MYbx)v)  
file://partition 0c>>:w20D  
l=i-1; {b-C,J  
r=j; MLr L"I"  
do{ Mzg3i*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #xmiUN,|  
SortUtil.swap(data,l,r); _A]jiPq  
} *4~7p4 [  
while(l SortUtil.swap(data,l,r); !$HuH6_[  
SortUtil.swap(data,l,j); u|23M,  
.:H'9QJg  
if((l-i)>THRESHOLD){ ybJa:  
stack[++top]=i; ~6#mVP5sU)  
stack[++top]=l-1; @d Qr^'h  
} > X  AB#  
if((j-l)>THRESHOLD){ #aX@mPm  
stack[++top]=l+1; CZRo{2!?U  
stack[++top]=j; a3O_#l-Z  
} ><R.z( 4%  
-z$2pXT ^  
} >?eTbtP  
file://new InsertSort().sort(data); So.P @CCd  
insertSort(data); 8G] m7Z  
} _i@eOqoC  
/**  r;X0 B  
* @param data ~C7<a48x  
*/ rOb"S*  
private void insertSort(int[] data) { .r5oN+?e  
int temp; ?lN8~Ze  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kseJm+Hc  
} WAXts]=  
} 2 RUR=%C  
}  0(/D|  
A{x 7  
} DbU;jorwu  
]j2v"n  
归并排序: L"!ZY  
TTZxkK  
package org.rut.util.algorithm.support; auTTvJ  
kefv=n*]l  
import org.rut.util.algorithm.SortUtil; !FO^:V<|5  
! M&un*  
/** h` h>H X  
* @author treeroot 9Jy2T/l  
* @since 2006-2-2 !_-sTZ  
* @version 1.0 A :bPIXb  
*/ R 4$Q3vcH  
public class MergeSort implements SortUtil.Sort{ t_>bTcsU  
 /E{dM2  
/* (non-Javadoc) hdr}!w V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) Zb`~w  
*/ DxKfWb5 R  
public void sort(int[] data) { v V6Lp  
int[] temp=new int[data.length]; %:w% o$  
mergeSort(data,temp,0,data.length-1); Vx6? @R  
} mDF"&.(j  
7XVzd]jH  
private void mergeSort(int[] data,int[] temp,int l,int r){ me:|!lI7YU  
int mid=(l+r)/2; CI!Eq&D,  
if(l==r) return ; Z#F,y)YiO  
mergeSort(data,temp,l,mid); (!VMnLlXRK  
mergeSort(data,temp,mid+1,r); -<51CDw,  
for(int i=l;i<=r;i++){ MO~~=]Y'  
temp=data; w~$c= JO#  
} kUg+I_j6*  
int i1=l; lQdnL.w$.4  
int i2=mid+1; =l8!VJa  
for(int cur=l;cur<=r;cur++){ -4?xwz9o$7  
if(i1==mid+1) fEj9R@u+h  
data[cur]=temp[i2++]; JXL9Gge  
else if(i2>r) lbB.*oQ  
data[cur]=temp[i1++]; S?Bc~y  
else if(temp[i1] data[cur]=temp[i1++]; ?{"XrQw  
else $K?T=a;z  
data[cur]=temp[i2++]; s ~Lfi.  
} 29Z!p2{hk  
} [Y22Wi  
nxyjL)!)0  
} >lraYMc<rZ  
` /I bWu  
改进后的归并排序: h"u<E\g  
VelB-vy&  
package org.rut.util.algorithm.support; llHc=&y#  
&0+x2e)7g  
import org.rut.util.algorithm.SortUtil; X(GmiH /E  
G{NSAaD[  
/** <AI>8j6#B  
* @author treeroot c$Xe.:QY  
* @since 2006-2-2 ='dLsh4P2N  
* @version 1.0 cc|CC Zl  
*/ 3z,v#2  
public class ImprovedMergeSort implements SortUtil.Sort { Pgn_9Y?<  
%bIsrQ~B  
private static final int THRESHOLD = 10; Kajkw>z  
0).fBBNG  
/* X,RT<GNNb  
* (non-Javadoc) n}< ir!ZTO  
* [1z{T(dh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SkiJ pMN  
*/ Qm.z@DwFM{  
public void sort(int[] data) { 9?uqQ  
int[] temp=new int[data.length]; e7@li<3>d  
mergeSort(data,temp,0,data.length-1); r0F_;  
} j\2] M  
YF}9k  
private void mergeSort(int[] data, int[] temp, int l, int r) { w$gS j/  
int i, j, k; o"|O ]  
int mid = (l + r) / 2; DpA\r_D  
if (l == r) R{*_1cyW  
return; UhsO\9}qH  
if ((mid - l) >= THRESHOLD)  bt;lq!g  
mergeSort(data, temp, l, mid); p1Q/g Il  
else ]{YN{  
insertSort(data, l, mid - l + 1); R=`U4Ml;  
if ((r - mid) > THRESHOLD) H}vn$$ O  
mergeSort(data, temp, mid + 1, r); B ,V( LTE  
else }dy9I H  
insertSort(data, mid + 1, r - mid); "?$L'!bM@  
\WWG>OUh.U  
for (i = l; i <= mid; i++) { 6hZ.{8e0  
temp = data; 7g-Dfg.w  
} #`/bQ~s  
for (j = 1; j <= r - mid; j++) { dIma{uv  
temp[r - j + 1] = data[j + mid]; $h,d? .u6w  
} y)P&]&"?  
int a = temp[l]; w{3ycR  
int b = temp[r]; 8Bq-0=E  
for (i = l, j = r, k = l; k <= r; k++) { V]Sgx00;  
if (a < b) { v' C@jsx M  
data[k] = temp[i++]; 19'5Re&  
a = temp; W/sY#"  
} else { (}G!np  
data[k] = temp[j--]; bV_j`:MD  
b = temp[j]; &1P(O\ d  
} {t&*>ma6)  
} YNI;h%w  
} 6;gLwOeOHY  
MZ WmlJ   
/** xWDR72 6  
* @param data xpAok]  
* @param l ^ESUMXb  
* @param i gSb,s [p&+  
*/ 0Q7MM6  
private void insertSort(int[] data, int start, int len) { Y17hOKc`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); CI^[I\$&  
} +>!V ]S  
} iUTU*El>  
} T<P0T<  
} Pubv$u2  
zZ: xEc  
堆排序: #ra*f~G  
9mDn KW  
package org.rut.util.algorithm.support; cAb>2]M5V  
a$}NW.  
import org.rut.util.algorithm.SortUtil; $Zxt&a  
`]jqQr97  
/** ;g+]klR!  
* @author treeroot QjJfE<h  
* @since 2006-2-2 w.z<60%},0  
* @version 1.0 6Cv.5V hx  
*/ &))\2pl  
public class HeapSort implements SortUtil.Sort{ ^&Q< tN 7  
B$?^wo  
/* (non-Javadoc) ~>g+2]Bn>$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p?JQ[K7i  
*/ Bd&`Xfebj  
public void sort(int[] data) { {~'H  
MaxHeap h=new MaxHeap(); '#q4Bc1  
h.init(data); [1SMg$@<  
for(int i=0;i h.remove(); 9 I{/zKq  
System.arraycopy(h.queue,1,data,0,data.length); 2 x32U MD  
} ;|HL+je;Z  
E{% SR  
private static class MaxHeap{  R%"K  
Bd# TUy  
void init(int[] data){ y3JMbl[S0  
this.queue=new int[data.length+1]; Da_()e[9p  
for(int i=0;i queue[++size]=data; C6]OAUXy:F  
fixUp(size); - {{[cT I  
} QIK 9  
} Qnt5HSSt  
e<"/'Ql!k  
private int size=0; ^~1<f1(  
Ee)xnY%(  
private int[] queue; +qy6d7^  
pO]8 dE0  
public int get() { J# EP%  
return queue[1]; tJ'iX>9I  
} 0BK5qz  
nB] Ia?  
public void remove() { X{Zm9T  
SortUtil.swap(queue,1,size--); %u!b& 5]e  
fixDown(1); `q_<Im%I  
} ^B]@Lr E^  
file://fixdown bK*~ol  
private void fixDown(int k) { =;ICa~`C;  
int j; e;(  
while ((j = k << 1) <= size) { ^$NJD  
if (j < size %26amp;%26amp; queue[j] j++; rQr!R$t/[  
if (queue[k]>queue[j]) file://不用交换 ?obm7<  
break; ahGT4d`)9  
SortUtil.swap(queue,j,k); 8ObeiVXf)  
k = j; /X#z*GX  
} ~x]9SXD%  
} QJBr6   
private void fixUp(int k) { ~ap2m  
while (k > 1) { (kw5>c7  
int j = k >> 1; {_>em*Vb  
if (queue[j]>queue[k]) E=w3=\JP  
break; Vw~\H Gs/~  
SortUtil.swap(queue,j,k); wT_h!W  
k = j; >*1}1~uU`'  
} .F2 :!h$  
} +!yX T C  
<<zI\+V  
} A)NkT`<)  
=RsXI&&vh  
} 8@\7&C(g17  
E6A /SVp  
SortUtil: ~Xv=9@,h  
',=g;  
package org.rut.util.algorithm; ,6"l(]0  
yVJ%+d:6  
import org.rut.util.algorithm.support.BubbleSort;  $xgBKD  
import org.rut.util.algorithm.support.HeapSort; F- rQ3  
import org.rut.util.algorithm.support.ImprovedMergeSort; PK2~fJB  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4. qtp`  
import org.rut.util.algorithm.support.InsertSort; Wf26  
import org.rut.util.algorithm.support.MergeSort; !8RwO%c(  
import org.rut.util.algorithm.support.QuickSort; ,kM)7!]N  
import org.rut.util.algorithm.support.SelectionSort; LKF/u` 0dP  
import org.rut.util.algorithm.support.ShellSort; N#z~  
l=m(mf?QBg  
/** 04@cLDX8uB  
* @author treeroot LIpEQ7;  
* @since 2006-2-2 g@ith&*=h  
* @version 1.0 L}k/9F.5  
*/ ~mp0B9L%  
public class SortUtil { uGP(R=H  
public final static int INSERT = 1; 'MxSd(T =  
public final static int BUBBLE = 2; iCQ>@P]nE  
public final static int SELECTION = 3; G4-z3e,crr  
public final static int SHELL = 4; NL"G2[e  
public final static int QUICK = 5; #f,y&\Xmf  
public final static int IMPROVED_QUICK = 6; ~$,qgf  
public final static int MERGE = 7; 6 ,b"  
public final static int IMPROVED_MERGE = 8; jLVl4h&  
public final static int HEAP = 9; q6d~V] 4:  
K\?]$dK5  
public static void sort(int[] data) { au@a8MP  
sort(data, IMPROVED_QUICK); `ldz`yu6++  
} % ZU/x d  
private static String[] name={ y' C-[nk  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Jf;?XP]z  
}; hVpCB,  
Yl cbW0'c  
private static Sort[] impl=new Sort[]{ ~aK?cP  
new InsertSort(), @* ust>7  
new BubbleSort(), $4=f+ "z  
new SelectionSort(), tOl e>]  
new ShellSort(), NZLAk~R;0  
new QuickSort(), io2)1cE&f  
new ImprovedQuickSort(), \%jVg\4 '  
new MergeSort(), P\2M[Gu(Q  
new ImprovedMergeSort(), y(jg#7)  
new HeapSort() LJlZ^kh  
}; k=ytuV\  
I27,mS+]  
public static String toString(int algorithm){ "f.Z}AbP  
return name[algorithm-1]; tfO#vw,@  
} m:QG}{<.h  
A#wEuX=[  
public static void sort(int[] data, int algorithm) { =3xE:  
impl[algorithm-1].sort(data); l:B;zi`)oB  
} D=f7NVc>Q  
<=K qc Hb  
public static interface Sort { z9/G4^qF  
public void sort(int[] data); )eeN1G`rDE  
} -T@`hk`  
5N$E()m$  
public static void swap(int[] data, int i, int j) { N3BL3:@O  
int temp = data; q<vf,D@{ !  
data = data[j]; j V3)2C}  
data[j] = temp; } l 667N  
} upn~5>uCP  
} ` TqSQg_l  
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