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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。 /bykIUTKI  
插入排序: @g#5d|U);  
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package org.rut.util.algorithm.support; myj/93p}`b  
+mrLMbBiD  
import org.rut.util.algorithm.SortUtil; j/aJDE(+  
/** 0h1u W26^  
* @author treeroot wXUR9H|0(  
* @since 2006-2-2 uUjjAGZ  
* @version 1.0 $6n J+  
*/ U$5x#{AFp  
public class InsertSort implements SortUtil.Sort{ bpc1> ?  
k[8F: T-  
/* (non-Javadoc) 43k'96[2d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ 5"  
*/ &-*l{"7p+%  
public void sort(int[] data) { a6gw6jQ  
int temp; I3>8B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ! \s}A7  
} K#k/t"r  
} H@-q NjM  
} hj1;f<' U  
x:-NTW -g  
} vP,pK=5  
a8TtItN  
冒泡排序: d*|RFU  
fuj9x;8X0  
package org.rut.util.algorithm.support; 5=V"tQ&d9U  
pT=^o  
import org.rut.util.algorithm.SortUtil; #U-y<[ 3  
"3VX9{'%@  
/** M.Q HE2  
* @author treeroot t<te{yt%  
* @since 2006-2-2 B!mHO*g  
* @version 1.0 mo<*h&;&  
*/ |"K%Tvxe  
public class BubbleSort implements SortUtil.Sort{ oU )(/  
Y[e.1\d'  
/* (non-Javadoc) _1?uAQ3,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (8 7wWhH  
*/ Hx6O Dj[-  
public void sort(int[] data) { xp1/@Pw?  
int temp; 2 K_ QZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >h%>s4W  
if(data[j] SortUtil.swap(data,j,j-1); /\Nc6Z/ L  
} Xc NL\fl1  
} hRXnig{;3  
} :JSxsA6 k  
} =p@2[Uo  
_v#pu Fy  
} 8\;, d  
1$DcE>  
选择排序: T[OI/ WuK  
&FmTT8"l  
package org.rut.util.algorithm.support; 8/p ]'BLf  
r3x;lICx-  
import org.rut.util.algorithm.SortUtil; o.r D  
&M5v EPR  
/** TAh'u|{u2  
* @author treeroot 9Pg6,[*u  
* @since 2006-2-2 ]?_~QE`  
* @version 1.0  #NyO'  
*/ "3jTU  
public class SelectionSort implements SortUtil.Sort { Ru d9l.n  
N'{Yhx u  
/* *[cCY!+Qy  
* (non-Javadoc) >]_6|Wfl  
* +h-% {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t$qIJt$  
*/ Mm,\e6#*  
public void sort(int[] data) { a 7v^o`  
int temp; v8)wu=u  
for (int i = 0; i < data.length; i++) { Ruq;:5u  
int lowIndex = i; , l!>+@  
for (int j = data.length - 1; j > i; j--) { dSjO 12b  
if (data[j] < data[lowIndex]) { _b>z'4_'  
lowIndex = j; EyR/   
} Wk^{Tn/]  
} _fgsHx>l7  
SortUtil.swap(data,i,lowIndex); 6t!=k6`1  
} O6e$vI@  
} q/w5Dx|:  
vC]r1q.(  
} tMdSdJ8  
y)L X?d  
Shell排序: O_s /BoB@  
JkR%o #>5  
package org.rut.util.algorithm.support; #Qg)4[pMJ  
DNDzK iMk  
import org.rut.util.algorithm.SortUtil; _Cf:\Xs m  
QNE/SSL  
/** <x$nw'H9  
* @author treeroot 8MW-JZ  
* @since 2006-2-2 {88|J'*L  
* @version 1.0 [e\IHakj  
*/ q%bFR[p<*  
public class ShellSort implements SortUtil.Sort{ C3.]dsv:  
 [A,!3BN  
/* (non-Javadoc) 3 u=\d)eq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V!*1F1  
*/ 0 -M i q  
public void sort(int[] data) { vp&.  
for(int i=data.length/2;i>2;i/=2){ BGVnL}0  
for(int j=0;j insertSort(data,j,i); {B#w9>'b  
} 8T+o.w==  
} Ht43G_.j  
insertSort(data,0,1); [+5g 9tBJ  
} O|Vc  
|0p@'X1  
/** /Xc9}~t6  
* @param data l`6.(6  
* @param j eo;MFd%;  
* @param i WJ8osWdLu  
*/ 3y$6}Kp4?  
private void insertSort(int[] data, int start, int inc) { TUGD!b{  
int temp; EGFP$nvq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <  j  
} C_ ;nlG6  
} !:xE X~  
} tpzh  
p4\sKF8-  
} r4K_Wp  
2>.b~q@  
快速排序: w|I5x}ZFG  
n}9<7e~/  
package org.rut.util.algorithm.support; ZJFF4($qN  
8)s0$64Ra  
import org.rut.util.algorithm.SortUtil;  $AZ=;iP-  
Nv0a]Am  
/** 9%R"(X)  
* @author treeroot rT-.'aQ2t  
* @since 2006-2-2 9 M?UPE  
* @version 1.0 K5<2jl3S  
*/ toj5b;+4F  
public class QuickSort implements SortUtil.Sort{ dA2@PKK  
-d2)  
/* (non-Javadoc) 8.%wnH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ME)='~E  
*/ @az<D7j2  
public void sort(int[] data) { 3,!IV"_  
quickSort(data,0,data.length-1); ^K8XY@{&  
} J_XkQR[Y  
private void quickSort(int[] data,int i,int j){ #5^OO ou|  
int pivotIndex=(i+j)/2; l  ~xXy<  
file://swap -)&lsFF  
SortUtil.swap(data,pivotIndex,j); Zy)iNNtn  
"9X(.v0ze  
int k=partition(data,i-1,j,data[j]); zLxuxf~4@  
SortUtil.swap(data,k,j); &{#6Z  
if((k-i)>1) quickSort(data,i,k-1); V%t_,AT  
if((j-k)>1) quickSort(data,k+1,j); TR `C|TV>  
+?QHSIQo  
} ~U]%>Zf  
/** 4__HH~j?Q  
* @param data -J'ked  
* @param i C=K{;.  
* @param j {65Y Tt%  
* @return FyXO @yF  
*/ AjO{c=d  
private int partition(int[] data, int l, int r,int pivot) { ht+wi5b  
do{ 8MU7|9 Q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "*c&[ALw  
SortUtil.swap(data,l,r); 3fE0cVG*  
} -EU=R_yg  
while(l SortUtil.swap(data,l,r); Du-Q~I6  
return l; ;<cCT!A  
} *y+K{ fM1  
PVN`k, 4  
} HFYe@2r  
VVuNU"-  
改进后的快速排序: bx7hQzoX=b  
Fy>g*3  
package org.rut.util.algorithm.support; Y_XRf8Sw  
nkN2Bqt$  
import org.rut.util.algorithm.SortUtil; C.}ho.} r  
!0Ak)Q]e'  
/** XCez5Q1  
* @author treeroot E1A5<^t  
* @since 2006-2-2 '7@Dw;   
* @version 1.0 6@d/k.3p  
*/ ds2xl7jg  
public class ImprovedQuickSort implements SortUtil.Sort { tPw7zFy6r  
,&@FToR  
private static int MAX_STACK_SIZE=4096; QdD@[  
private static int THRESHOLD=10; K)\D,5X^  
/* (non-Javadoc) !_dW  `  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xi.QHKBZaH  
*/ Idj Z2)$  
public void sort(int[] data) { Mu$q) u  
int[] stack=new int[MAX_STACK_SIZE]; ?Qpi(Czbpq  
XNBzA3W  
int top=-1; CWD $\K G  
int pivot; g,Rh Ut9  
int pivotIndex,l,r; {D]I[7f8Ev  
Sx_j`Cgy  
stack[++top]=0; 09iD| $~  
stack[++top]=data.length-1; f\:I1y  
%7Gq#rq  
while(top>0){ Xi=4S[.4  
int j=stack[top--]; 7=A @P  
int i=stack[top--]; j{m{hVa  
nF 'U*  
pivotIndex=(i+j)/2; Ml_!)b  
pivot=data[pivotIndex]; S! .N3ezn  
E_xk8X~  
SortUtil.swap(data,pivotIndex,j); xf qu=z8X  
8nSw7:z  
file://partition #hEU)G' $+  
l=i-1; Y~OyoNu2  
r=j; .4=A:9  
do{ ]/mRMm9"3h  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Sh<A936/E  
SortUtil.swap(data,l,r); s%N6^}N  
} fa/p  
while(l SortUtil.swap(data,l,r); tkHUX!Ow;  
SortUtil.swap(data,l,j); uVw|jj  
><)fK5x  
if((l-i)>THRESHOLD){ l-'\E6grdH  
stack[++top]=i; _<)HFg6  
stack[++top]=l-1; ^P*+0?aFr  
} gf,[GbZ  
if((j-l)>THRESHOLD){ EmV ZqW  
stack[++top]=l+1; fp"GdkO#}i  
stack[++top]=j; {6wy}<ynC+  
} ZD8E+]+  
;:Y/"5h  
} mZ#IP  
file://new InsertSort().sort(data); N)YoWA>#bF  
insertSort(data); j<vU[J+gx~  
} 7"{CBbT  
/** pf_`{2.\uO  
* @param data Sr6?^>A@t  
*/ X'cm0}2  
private void insertSort(int[] data) { [\"<=lb`  
int temp; \H/}| ^+@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j1dz'G}hj  
} RgVg~?A@  
} v/G^yZa  
} 9/5 EyV  
StMvz~  
} K`cy97  
9OM&&Ue<E  
归并排序: mP ^*nB@,  
Eqt>_n8  
package org.rut.util.algorithm.support; 2ZQ|nwb7  
rK cr1VFy  
import org.rut.util.algorithm.SortUtil; \ id(P3M  
S2 YxA  
/** vg[zRWh8  
* @author treeroot 9CHn6 v ~)  
* @since 2006-2-2 rj;~SC{  
* @version 1.0 ] iiB|xT  
*/  ev(E  
public class MergeSort implements SortUtil.Sort{ 1.z !u%2  
f.U.(  
/* (non-Javadoc) RS  Vt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 259:@bi!y  
*/ lJBZ0  
public void sort(int[] data) { ;UWp0d%  
int[] temp=new int[data.length]; ._}Dqg$  
mergeSort(data,temp,0,data.length-1); M cbiO)@I  
} } 71 9_DF  
&d[%  
private void mergeSort(int[] data,int[] temp,int l,int r){ *(Us:*$W.  
int mid=(l+r)/2; qk\LfRbj  
if(l==r) return ; LwEc*79  
mergeSort(data,temp,l,mid); H AMps[D[  
mergeSort(data,temp,mid+1,r); Wi!$bL`l  
for(int i=l;i<=r;i++){ %967#XI[y  
temp=data; z%WOv ~8~  
} 0,[- 4m  
int i1=l; R~XNF/QMl  
int i2=mid+1; ;Q%3WD  
for(int cur=l;cur<=r;cur++){ ;F>I+l_X  
if(i1==mid+1) %Z#[{yuFs  
data[cur]=temp[i2++]; ))#_@CwRr  
else if(i2>r) IHf#P5y_  
data[cur]=temp[i1++]; o|c"W}W  
else if(temp[i1] data[cur]=temp[i1++]; 3x~AaC.j  
else <fcw:Ae  
data[cur]=temp[i2++]; <=!|U0YV  
} ? 1b*9G%i  
} #+PfrS=  
8*yk y  
} 38(|a5  
I K Dh)Zm  
改进后的归并排序: v`u>; S_  
qt#4i.Iu+  
package org.rut.util.algorithm.support; jT q@@y  
H.: [# a  
import org.rut.util.algorithm.SortUtil; 9IG3zMf  
E 5bo60z  
/** 3+# "4O  
* @author treeroot d9uT*5f  
* @since 2006-2-2 aQhr$aH  
* @version 1.0 AZjj71UE  
*/ cK+y3`.0  
public class ImprovedMergeSort implements SortUtil.Sort { ]%/a'[  
@V# wYt  
private static final int THRESHOLD = 10; ZE>!]# ,  
)v?-[ oR  
/* IpMZ{kJlv`  
* (non-Javadoc) <S%kwS  
* Qz?r4kR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * ;C8g{  
*/ Ty>g:#bogI  
public void sort(int[] data) { M 4TFWOC1  
int[] temp=new int[data.length]; * E3 c--  
mergeSort(data,temp,0,data.length-1); t#[u X?  
} jo8;S?+<|?  
`m Tc  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4$!iw3N(  
int i, j, k; L]HYk}oD.  
int mid = (l + r) / 2; spt='!)4  
if (l == r) ?*8HZ1m#  
return; pu*vFwZ  
if ((mid - l) >= THRESHOLD) RDu'N  
mergeSort(data, temp, l, mid); tcxs%yWO1  
else iy_\1jB0  
insertSort(data, l, mid - l + 1); f~D> *<L4-  
if ((r - mid) > THRESHOLD) pJ1Q~tI  
mergeSort(data, temp, mid + 1, r); Z"fnjH  
else )pXw 3Fo  
insertSort(data, mid + 1, r - mid); %Sdzr!I7*  
R'q:Fc  
for (i = l; i <= mid; i++) { _('KNA~  
temp = data; KGm"-W  
} nC5  
for (j = 1; j <= r - mid; j++) { a/wkc*}}/  
temp[r - j + 1] = data[j + mid]; 5CsJghTw  
} 6uijxia  
int a = temp[l]; b]h]h1~hHH  
int b = temp[r]; k(;c<Z{?1  
for (i = l, j = r, k = l; k <= r; k++) { <IBzh_  
if (a < b) { '.wyfSH@  
data[k] = temp[i++]; ~=,|dGAa$  
a = temp; "kjjq~l  
} else { k+S 6)BQ7U  
data[k] = temp[j--]; vx\h Njb  
b = temp[j];  -'|pt,)  
} THmX=K4=?  
} {-]/r  
} &:` 7  
hsQrHs'k  
/** f#p.=F$  
* @param data {Z_Pry$6  
* @param l D>O{>;y[  
* @param i -hP@L ++D  
*/ w%1B_PyDg  
private void insertSort(int[] data, int start, int len) { ?6 "F.\ O@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UP]J `\$o  
} mdOF0b%-]  
} +*Cg2`  
} )]%GNdU  
} BV&}(9z  
t$=0  C  
堆排序: AX%9k  
d+|8({X]D8  
package org.rut.util.algorithm.support; 1Ly?XNS  
X!n-nms  
import org.rut.util.algorithm.SortUtil; id.o )=  
ujcNSX*  
/** (iK0T.  
* @author treeroot O4&/g-  
* @since 2006-2-2 3Lq?Y7#KQp  
* @version 1.0 0rT-8iJp4P  
*/ M)#R_(Q5{  
public class HeapSort implements SortUtil.Sort{ ,7pO-:*g  
%&^F.JTt\  
/* (non-Javadoc) 0X)'8N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #cQ[ vE)y  
*/ `ge{KB;*n#  
public void sort(int[] data) { }d)>pH  
MaxHeap h=new MaxHeap(); b=QO^  
h.init(data); *kxk@(lT?  
for(int i=0;i h.remove(); (G"b)"Qum  
System.arraycopy(h.queue,1,data,0,data.length); c*_I1}l  
} Gr#p QE2;  
Vd|5JA}<"  
private static class MaxHeap{ A{;b^ IK  
SM:{o&S`  
void init(int[] data){ vdNh25a<h  
this.queue=new int[data.length+1]; y6; '?.Y1  
for(int i=0;i queue[++size]=data; 1` m ~c  
fixUp(size); ;'pEzz?k"  
} 1(!!EcU_  
} xN}P0  
|n=kYs  
private int size=0; L"tj DAV  
tGd9Cs9D<  
private int[] queue; qEf )TW(  
cCU'~  
public int get() { *Yvfp{B  
return queue[1]; .Kq>/6  
} ZH`6>:  
o&?Tz*"l  
public void remove() { \J-O b  
SortUtil.swap(queue,1,size--); !HqIi@>8  
fixDown(1); }k<b)I*A  
} !hF b <  
file://fixdown S,3e|-&$  
private void fixDown(int k) { h.4;-&  
int j; J*,Ed51&7  
while ((j = k << 1) <= size) { +B_q? 6pR  
if (j < size %26amp;%26amp; queue[j] j++; 60teD>Eh,  
if (queue[k]>queue[j]) file://不用交换 Q_6./.GQ  
break; \9i.dF  
SortUtil.swap(queue,j,k); {*t'h?b  
k = j; ED"5y  
} L|6clGp  
} <W/-[ M  
private void fixUp(int k) { YIfPE{,  
while (k > 1) { **-%5 ~  
int j = k >> 1; \(Zdd \,  
if (queue[j]>queue[k]) ,A =%!p+  
break; V>A@Sw  
SortUtil.swap(queue,j,k); * 2T&pX  
k = j; w*#k&N[X  
} Fdu0?H2TL  
} Tr/wG  
?8! 4!P%n  
} ^67P(h  
&!/L^Y*+  
} V[+ Pb]  
Cl<` uW3  
SortUtil: ^bL.|vB  
[JMz~~ F  
package org.rut.util.algorithm; y @Y@"y  
4p>@UB&U  
import org.rut.util.algorithm.support.BubbleSort; yql+N[  
import org.rut.util.algorithm.support.HeapSort; ^o:0 Y}v=  
import org.rut.util.algorithm.support.ImprovedMergeSort; pVt-7 AgW  
import org.rut.util.algorithm.support.ImprovedQuickSort; v]U[7 j  
import org.rut.util.algorithm.support.InsertSort; 0>Ki([3  
import org.rut.util.algorithm.support.MergeSort; t ~U&a9&Z  
import org.rut.util.algorithm.support.QuickSort; ,O 3"r;  
import org.rut.util.algorithm.support.SelectionSort; i]hFiX  
import org.rut.util.algorithm.support.ShellSort; }#EiL !Pv  
fgn*3 pg  
/** l+R-lsj  
* @author treeroot 9N=Dls  
* @since 2006-2-2 JZu7Fb]L9  
* @version 1.0 b%,5B  
*/ b4ORDU  
public class SortUtil { U G^6I5  
public final static int INSERT = 1; \+Qx}bS{  
public final static int BUBBLE = 2; :$/lGIz  
public final static int SELECTION = 3; nm %ka4  
public final static int SHELL = 4; kX[I|Z=  
public final static int QUICK = 5; ( M.Sl  
public final static int IMPROVED_QUICK = 6; 4y 582u6^  
public final static int MERGE = 7; [^ 7^&/0  
public final static int IMPROVED_MERGE = 8; 3iH!;`i  
public final static int HEAP = 9; ,D ;`t  
2lAuO!%  
public static void sort(int[] data) { "St,4 b  
sort(data, IMPROVED_QUICK); s'~_pP  
} Lk#u^|Eq7=  
private static String[] name={ "-v9V7KCM  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _a15R/S  
}; x3wyIio*  
vuDp_p*]S  
private static Sort[] impl=new Sort[]{ 6sQ"go$}  
new InsertSort(), quGb;)3  
new BubbleSort(), ]#S1 AvT  
new SelectionSort(), cQ3Dk<GZ  
new ShellSort(), DNki xE*  
new QuickSort(),  9l{r&]  
new ImprovedQuickSort(), ]C)PZZI='  
new MergeSort(), {_^sR}%]F  
new ImprovedMergeSort(), xOTm-Cm9L  
new HeapSort() .%WbXs  
}; =B<g_9d4  
LsV!Sd  
public static String toString(int algorithm){ 0p Lb<&  
return name[algorithm-1]; "p2PZ)|  
} OWOj|jM  
%@H;6   
public static void sort(int[] data, int algorithm) { z%*ZmF^K  
impl[algorithm-1].sort(data); !i)?j@D  
} jew?cnRmd  
@*%5"~F  
public static interface Sort { x:sTE u@  
public void sort(int[] data); 'ky'GzX,  
} lpSM p  
UnW,|n8  
public static void swap(int[] data, int i, int j) {  U]e;=T:3  
int temp = data; ? 76jz>;b  
data = data[j]; T!v%NZj3  
data[j] = temp; 3ufUB^@4v  
} #<v3G)|aS  
} uERc\TZ  
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