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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。 #`SD$;  
插入排序: ]s1 YaNq  
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package org.rut.util.algorithm.support; w!3>N"em  
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import org.rut.util.algorithm.SortUtil; % 4 ~l  
/** /CX VLl8~  
* @author treeroot m}Y0xV9  
* @since 2006-2-2 .p6+l!"  
* @version 1.0 lPP,`  
*/ Y:QD   
public class InsertSort implements SortUtil.Sort{ P\R27Jd  
: mGAt[Cc  
/* (non-Javadoc)  z01>'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DPHQ,dkp  
*/ E+xuWdp.*  
public void sort(int[] data) { M:SO2Czz  
int temp; peVq+(=.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c| ~6Ie  
} HeN~c<NuB  
} %1U`@0  
} Ukphd$3J=  
Sr.;GS5i  
} 30cd| S?  
l:(Rb-Wy  
冒泡排序: \c`oy=qY0  
4&^9Wklj  
package org.rut.util.algorithm.support; QBJ3iQs1  
83ipf"]*  
import org.rut.util.algorithm.SortUtil; x%> e)L<  
FH5ql~  
/** Wsj=!Obc  
* @author treeroot 3K0tC=  
* @since 2006-2-2 GUB`|is^  
* @version 1.0 !Jfs?Hy  
*/ \l#>dq"Y  
public class BubbleSort implements SortUtil.Sort{ E8}+k o  
?(zoTxD  
/* (non-Javadoc) s4= "kT]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c9Es%@]  
*/ in%;Eqk  
public void sort(int[] data) { dfj\RIV8  
int temp; ;&;W T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ r4 dOK] 0  
if(data[j] SortUtil.swap(data,j,j-1); rw%l*xgX  
} k!XhFWb  
} "dh:-x6  
} &~sfYW  
} LxN*)[Wb  
f6=w3RS  
} $So%d9k  
/'DwfX  
选择排序: -\$`i c$"1  
e&I t  
package org.rut.util.algorithm.support; xBnbF[  
5ua?I9fY  
import org.rut.util.algorithm.SortUtil; _Tm0x>EM  
[\ )Ge  
/** TQ :/RT  
* @author treeroot $6f\uuTU2"  
* @since 2006-2-2 QGnxQ{ko  
* @version 1.0 "kW!{n  
*/ tB(4Eq \  
public class SelectionSort implements SortUtil.Sort { D #2yIec  
LX+5|u  
/* N> Jw  
* (non-Javadoc) dG'SZ&<  
* rx ~[Zs+*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ak:v3cQR  
*/ cSP*f0n,eo  
public void sort(int[] data) { M++0zhS  
int temp; ,%"xH4d  
for (int i = 0; i < data.length; i++) { eH>#6R1-  
int lowIndex = i; ]5CNk+`'  
for (int j = data.length - 1; j > i; j--) { 43:t \  
if (data[j] < data[lowIndex]) { B~WtZ-%%E  
lowIndex = j; j} HFs0<L  
} J@"utY6N  
} IfdI|ya  
SortUtil.swap(data,i,lowIndex); BuQ|~V  
} #} ,x @]p  
} yOXO)u1n  
B;zt#H4  
} C*Vd-U  
Ibr%d2yS=  
Shell排序: $ACx*e%  
RNJ FSD.  
package org.rut.util.algorithm.support; ]Tp U"JD  
)6oGF>o>  
import org.rut.util.algorithm.SortUtil; pgc3jP!  
('k<XOi  
/** GY!C|7kN  
* @author treeroot $< %B#axL  
* @since 2006-2-2  .jg0a  
* @version 1.0 'VnwG  
*/ 2OBfHO~D  
public class ShellSort implements SortUtil.Sort{ XJ\hd,R   
#B}?Zg  
/* (non-Javadoc) I+?hG6NM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :KE/!]z  
*/ %HuyK  
public void sort(int[] data) { "cUg>a3  
for(int i=data.length/2;i>2;i/=2){ Gm8E<iTP  
for(int j=0;j insertSort(data,j,i); /MTf0^9  
} cgZaPw2 bw  
} @s* ,xHE  
insertSort(data,0,1); iw]k5<qKj  
} +c,[ Q  
m\0cE1fir  
/** *YV S|6bs  
* @param data :- +4:S  
* @param j =]>%t]  
* @param i ? 5|/ C  
*/ eD#XDK  
private void insertSort(int[] data, int start, int inc) { HMQI&Lh=U  
int temp; D,;\F,p  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m2bDHQ+  
} f?UzD#50D  
} Di(9]: +  
} 'imU `zeo  
PXYE;*d(  
} 2: ^njqX  
D_D,t8_Y  
快速排序: b)} +>Wx  
Lk, +Tfk"  
package org.rut.util.algorithm.support; b5`KB75sbo  
v548ysE)  
import org.rut.util.algorithm.SortUtil; Zr/r2  
C8b''9t.  
/** H#(<-)j0_  
* @author treeroot w9&#~k]5  
* @since 2006-2-2 _ n O.-  
* @version 1.0 WStnzVe  
*/ =:7$/T'Qg  
public class QuickSort implements SortUtil.Sort{ $Xf(^K  
R 1zC.m  
/* (non-Javadoc) A|RR]CFJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p8>%Mflf  
*/ d0UZ+ RR#  
public void sort(int[] data) { 9C}qVoNu  
quickSort(data,0,data.length-1); x7ATI[b[  
} "dCzWFet  
private void quickSort(int[] data,int i,int j){ &^QPkX@p  
int pivotIndex=(i+j)/2; 9%,;XQ  
file://swap @)0 Y~A )  
SortUtil.swap(data,pivotIndex,j); x mo&![P  
Os&1..$Nb  
int k=partition(data,i-1,j,data[j]); h8v>zNf'  
SortUtil.swap(data,k,j); o0Gx%99'  
if((k-i)>1) quickSort(data,i,k-1); Da,Tav%b  
if((j-k)>1) quickSort(data,k+1,j); Lo`F  
\Ow,CUd  
} (cV  
/** v*TeTA %  
* @param data zy)i1d  
* @param i ejcwg*i  
* @param j \r -N(;m  
* @return 7'j9rmTXs  
*/ hPO>,j^  
private int partition(int[] data, int l, int r,int pivot) { 4XG]z_+I  
do{ #x)}29%e#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Jt=>-Spj  
SortUtil.swap(data,l,r); iJnh$jo  
} TmP8 q  
while(l SortUtil.swap(data,l,r); i?>Hr|  
return l; %C *^:\y  
} mK\aI  
h}6_ybmZ  
} $ KQ,}I  
y^s1t2]%  
改进后的快速排序: > V%Q O>C  
sR79 K1*j  
package org.rut.util.algorithm.support; %zljH"F  
dU+0dZdKO  
import org.rut.util.algorithm.SortUtil; xrI}3T  
uPU#c\  
/** Oxa5Kfpa  
* @author treeroot h$&rE@N|  
* @since 2006-2-2 l2/ @<0P  
* @version 1.0 *8-p7,D  
*/ # "r kuDO  
public class ImprovedQuickSort implements SortUtil.Sort { VkXn8J  
q$>_WF#||  
private static int MAX_STACK_SIZE=4096; mQ,{=C=D  
private static int THRESHOLD=10; e^frVEV  
/* (non-Javadoc) DQ_ 2fX~)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .mt^m   
*/ ;1E_o  
public void sort(int[] data) { iS05YW  
int[] stack=new int[MAX_STACK_SIZE]; ZNy9_a:dX  
ITvHD-,\  
int top=-1; fI}c 71b`  
int pivot; =uc^433.  
int pivotIndex,l,r; ?!m m a\W  
K+> V|zKuk  
stack[++top]=0; 8MQ bLj'H  
stack[++top]=data.length-1; MB O,\t.  
 T{Hf P  
while(top>0){ uu@<&.r\C  
int j=stack[top--]; $i%HDt|  
int i=stack[top--]; Rp eBm#E2  
I~k=3,7<  
pivotIndex=(i+j)/2; ULu O0\W  
pivot=data[pivotIndex]; bL MkPty  
j4vB`Gr]  
SortUtil.swap(data,pivotIndex,j); E7 L bSZ  
zKMv7;s?  
file://partition ?o>6S EGW  
l=i-1; '\'7yN'  
r=j; Cz[5Ug'V  
do{ )<Ob  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @7X\tV.Z  
SortUtil.swap(data,l,r); 2%]t3\XW  
} 8J^d7uC  
while(l SortUtil.swap(data,l,r); E6Q91Wz9f  
SortUtil.swap(data,l,j); ec1Fg0Fa  
)BpIxWd?  
if((l-i)>THRESHOLD){ Vy r] x  
stack[++top]=i; l]>!`'sJL  
stack[++top]=l-1; VLx T"]f  
} `W="g6(  
if((j-l)>THRESHOLD){ m&ZJqsZIL  
stack[++top]=l+1; . Nk6  
stack[++top]=j; 30BR 0C  
} #4lHaFq  
^@Y9!G=  
} 9<w=),R`8  
file://new InsertSort().sort(data); rNxG0^k(  
insertSort(data); Ga?UHw~  
} m]e0X*Kg  
/** rr>IKyI'  
* @param data NC;T( @  
*/ du8!3I  
private void insertSort(int[] data) { uiuTv)pwF  
int temp; ^X$ I=ro  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qw}xGlF,  
} i >J:W"W   
} (\tq<h0  
} 69-$Wn43<  
9M;I$_U`vj  
} cS5w +`,L  
vg5E/+4gp%  
归并排序: O${r^6Hh  
#'#4hJ*YC  
package org.rut.util.algorithm.support; P mC82"  
\2(MpB\_6!  
import org.rut.util.algorithm.SortUtil; A?\h|u<  
"3v7gtGG  
/** 0NVG"-Q  
* @author treeroot F6~b#Jz&i  
* @since 2006-2-2 q~mcjbLz  
* @version 1.0 ~;TV74~rr  
*/ ]}5`7  
public class MergeSort implements SortUtil.Sort{ {~":;  
B>R* f C@g  
/* (non-Javadoc) rnJS[o0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ST#PMb'izn  
*/ ,I("x2  
public void sort(int[] data) { {6ajsy5=  
int[] temp=new int[data.length]; Qa>%[jx,@,  
mergeSort(data,temp,0,data.length-1); Mp!2`4rD  
} Ni&,g  
bx1G CD  
private void mergeSort(int[] data,int[] temp,int l,int r){ :U7;M}0  
int mid=(l+r)/2; kg zwlKK  
if(l==r) return ; )x y9X0  
mergeSort(data,temp,l,mid); "tpvENz2s  
mergeSort(data,temp,mid+1,r); n (9F:N  
for(int i=l;i<=r;i++){ H 3W_}f  
temp=data; 6ch@Be5*  
} W=q?tD~V  
int i1=l; #d3[uF]OmW  
int i2=mid+1; )kFme=;  
for(int cur=l;cur<=r;cur++){ }ZxW"5oq  
if(i1==mid+1) \?aOExG I  
data[cur]=temp[i2++]; g8C+1G8  
else if(i2>r) 7$;c6_se  
data[cur]=temp[i1++]; ;]|m((15G  
else if(temp[i1] data[cur]=temp[i1++]; u!sSgx =  
else /M5=tW#e  
data[cur]=temp[i2++]; rjfc.l#v  
} lv*Wnn@k  
} T]5U_AI@  
avF&F  
} BF@m )w.v  
#1gTpb+t  
改进后的归并排序: |j\eBCnH3  
=f/avGX  
package org.rut.util.algorithm.support; 1Al=v  
jJiCF,m  
import org.rut.util.algorithm.SortUtil; vbW\~xf  
:==UDVP  
/** fo/(()  
* @author treeroot cuJ / Vc  
* @since 2006-2-2 Ut0qr kqF  
* @version 1.0 r%O rH-T  
*/ VKl~oFKXJ  
public class ImprovedMergeSort implements SortUtil.Sort { oXu~9'm$  
XyN`BDFi  
private static final int THRESHOLD = 10; {FrHm  
mE)x7  
/* %a%+!wX0x  
* (non-Javadoc) kW*W4{Fth  
* pZNlcB[Qn-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C{lB/F/|!  
*/ x`&P}4v0  
public void sort(int[] data) { 6'3Ey'drH  
int[] temp=new int[data.length]; CJ37:w{%*Y  
mergeSort(data,temp,0,data.length-1); B$iMU?B3  
} zwF7DnW<<  
+LvZ87O^~  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^^W`Lh%9  
int i, j, k; ;1Tpzm  
int mid = (l + r) / 2; lB YS>4~  
if (l == r) <ZN) /,4PS  
return; O;.d4pO(tC  
if ((mid - l) >= THRESHOLD) EV;;N  
mergeSort(data, temp, l, mid); [m@e^6F0U  
else iyHp$~,q?t  
insertSort(data, l, mid - l + 1); la6e`  
if ((r - mid) > THRESHOLD) WoN]eO  
mergeSort(data, temp, mid + 1, r); l-JKcsM  
else crF9,p  
insertSort(data, mid + 1, r - mid); s`dkEaS  
cc#_acR  
for (i = l; i <= mid; i++) { *HfW(C$  
temp = data; xfZ9&g  
} \p_8YC  
for (j = 1; j <= r - mid; j++) { ~=aI2(b  
temp[r - j + 1] = data[j + mid]; QyBK*uNdV  
} $(!D/bvJ  
int a = temp[l]; wHDF TIDI  
int b = temp[r]; UBpM8/U  
for (i = l, j = r, k = l; k <= r; k++) { iKCTYXN1(  
if (a < b) { }tg:DG  
data[k] = temp[i++]; YQw/[  
a = temp; E,nYtn|B  
} else { CMD`b  
data[k] = temp[j--]; 1Rb<(%   
b = temp[j]; F'T= Alf  
} N*c?Er@8U  
} {mq$W  
} A+Pm "|  
M@z_Z+q 9  
/** .>\>F{#~  
* @param data =FC;d[U  
* @param l /R+]}Lt~%*  
* @param i uR[PKLh  
*/ -^NAHE$bW  
private void insertSort(int[] data, int start, int len) { `qy6 qKl N  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _S7M5{U_  
} 9jJ/ RXp  
} t+Q|l&|0  
} w[n>4?"{  
} =Z$=-\<x0.  
(Os OPTp  
堆排序:  z]R!l%`  
Z[A|SyZp  
package org.rut.util.algorithm.support; 'V*M_o(\  
Jb-QP'$@  
import org.rut.util.algorithm.SortUtil; >ehWjL`8  
lr= !:D=K  
/** M`,Z#)Af  
* @author treeroot oKqFZ,m[  
* @since 2006-2-2 8 H"f9S=K  
* @version 1.0 4m~stDlN  
*/ pkMON}"mj  
public class HeapSort implements SortUtil.Sort{ nfPl#]ef*  
$5 p'+bE  
/* (non-Javadoc) GeW$lA I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JV*,!5  
*/ E)Epr&9S  
public void sort(int[] data) { R)d 7b,_Yd  
MaxHeap h=new MaxHeap(); QcVtv7+*v  
h.init(data); 7Mb t*[n  
for(int i=0;i h.remove(); ("@V{<7(t  
System.arraycopy(h.queue,1,data,0,data.length); OU964vv  
} sV4tu(~  
g(F*Y> hk  
private static class MaxHeap{ f0'Wq^^  
H\>I&gC'  
void init(int[] data){ 2dlV'U_g  
this.queue=new int[data.length+1]; GZ>% &^E  
for(int i=0;i queue[++size]=data; \EfwS% P  
fixUp(size); YD>>YaH_3@  
} ?01""Om   
} mZJzBYM)  
$}c@S0%P"  
private int size=0; X!+ a;wr  
P!&CH4+  
private int[] queue; CoN/L`.SN  
uT t:/gm  
public int get() { Rm 1`D  
return queue[1]; 2g8P$+;  
} r4>I?lD  
wLp t2b8S  
public void remove() { '{*>hj5.8  
SortUtil.swap(queue,1,size--); 9<r}s  
fixDown(1); N~KRwsDH  
} ; SM^  
file://fixdown hd BC ^n  
private void fixDown(int k) { aw~EK0yU   
int j; bHT@]`@@  
while ((j = k << 1) <= size) { xa*gQ%+F  
if (j < size %26amp;%26amp; queue[j] j++; 6OW-Dif^AG  
if (queue[k]>queue[j]) file://不用交换 T@WMT,J6j  
break; QYb?;Z  
SortUtil.swap(queue,j,k); #C7j|9Ew1]  
k = j; +B|X k[  
} !27]1%Aw  
} d iLl>z  
private void fixUp(int k) { ~ J{{n_G{  
while (k > 1) { ?a9k5@s  
int j = k >> 1; ABDUp:  
if (queue[j]>queue[k]) )t=u(:u]  
break; JU.%;e7  
SortUtil.swap(queue,j,k); Czxrn2p/  
k = j; sYP@>tHC  
} Xkm2C)  
} vp9<.*h  
W+S; Do  
} 6+z]MT  
itgO#(g$Q  
} \8aF(Y^H  
Y/(-mcR  
SortUtil: X($SBUS6  
AAY UXY!  
package org.rut.util.algorithm; ]*U')  
{3Wc<&D C1  
import org.rut.util.algorithm.support.BubbleSort; #L$ I %L"  
import org.rut.util.algorithm.support.HeapSort; A\.*+k/B  
import org.rut.util.algorithm.support.ImprovedMergeSort; T$;XJx  
import org.rut.util.algorithm.support.ImprovedQuickSort; ='>UKy[=  
import org.rut.util.algorithm.support.InsertSort; ,O!aRvzap  
import org.rut.util.algorithm.support.MergeSort; fMaNv6(  
import org.rut.util.algorithm.support.QuickSort; mhuaXbr  
import org.rut.util.algorithm.support.SelectionSort; ~m U_ `o  
import org.rut.util.algorithm.support.ShellSort; elB 8   
Z?mg1;Q  
/** ~]M"  
* @author treeroot ;)a9Y?  
* @since 2006-2-2 "6QMa,)D  
* @version 1.0 1z:N$O _v  
*/ H\bIO!vb  
public class SortUtil { D|:sSld @  
public final static int INSERT = 1; 8m<<tv.  
public final static int BUBBLE = 2; r ngw6?`n-  
public final static int SELECTION = 3; 1D6O=j\  
public final static int SHELL = 4; ,+9r/}K]/  
public final static int QUICK = 5; RY< b]|  
public final static int IMPROVED_QUICK = 6; D.`\ ^a  
public final static int MERGE = 7; e8bJ]  
public final static int IMPROVED_MERGE = 8; 3>Snd9Q  
public final static int HEAP = 9; >6+K"J-@  
-5.%{Go$[  
public static void sort(int[] data) { =rF8[Q0K  
sort(data, IMPROVED_QUICK); $(=1A>40  
} k;7.qhe:  
private static String[] name={ ~\,6 C1M  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T%/w^27E  
}; -+_&#twU  
Z+(V \  
private static Sort[] impl=new Sort[]{ )7J>:9h  
new InsertSort(), ppKCY4  
new BubbleSort(), >,Z{wxz J  
new SelectionSort(), d2sq]Q  
new ShellSort(), E2D8s=r  
new QuickSort(), It-*CD9  
new ImprovedQuickSort(), ?%Fk0E#>2  
new MergeSort(), A!yLwkc:5  
new ImprovedMergeSort(), z?[DW*  
new HeapSort() =)8fE*[s   
}; {m:R v&T  
a0\UL"z#+  
public static String toString(int algorithm){ B$EP'5@b  
return name[algorithm-1]; g<%-n,  
} a*y mBGF  
"~ stZ.  
public static void sort(int[] data, int algorithm) { U{(07GNm#  
impl[algorithm-1].sort(data); F9r*ZyNlx  
} P^W47 SO  
tb3fz")UC  
public static interface Sort { yG$@!*|  
public void sort(int[] data); ;(6lN<i U  
} %;$Y|RbmqE  
%QLYNuG  
public static void swap(int[] data, int i, int j) { }* JMc+!9@  
int temp = data; ?GU!ke p  
data = data[j]; "\?G  
data[j] = temp; );H[lKy  
} [HDO^6U  
} vyGLn  
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