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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。 jN+N(pIi.o  
插入排序: SnTDLa  
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package org.rut.util.algorithm.support; %im#ww L%  
,rwuy[Q8  
import org.rut.util.algorithm.SortUtil; w[Ep*-yeI  
/** x q-$\#O  
* @author treeroot =]Hs|{  
* @since 2006-2-2 }98>5%Uv  
* @version 1.0 3Gr&p6  
*/ D 0]a\,aZ  
public class InsertSort implements SortUtil.Sort{ g#K'6VK{  
D~&Mwsi  
/* (non-Javadoc) iY/KSX^~O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o8FXqTUcs4  
*/ k6?cP0I)5  
public void sort(int[] data) { <<|H=![  
int temp; qq0?e0H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =OV2uq  
} M_D6i%b^  
} lZt(&^T  
} jB^OP1  
"] -],K  
} 3rf#Q }"  
M\+*P,i  
冒泡排序: 8xI`jE"1  
e}cnX`B  
package org.rut.util.algorithm.support; Hwe)Tsh e  
{lzG*4?  
import org.rut.util.algorithm.SortUtil; L$Z(+6m5  
z]$j7dp  
/** vh>{_ #  
* @author treeroot {rkn q_;0  
* @since 2006-2-2  8R69q:  
* @version 1.0 af+}S9To  
*/ ZAg;q#z j  
public class BubbleSort implements SortUtil.Sort{ 3On JWuVfZ  
q:HoKJv4  
/* (non-Javadoc) GZ0aOpUWVq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WY)^1Gb$ux  
*/ s"0b%0?A  
public void sort(int[] data) { o;-<|W>  
int temp; 2neRJ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]?9[l76O7  
if(data[j] SortUtil.swap(data,j,j-1); %XXkVK`  
} #Y,A[Y5jX  
} .Tm- g#  
} bv\ A,+  
} Zy wK/D  
IB7tAG8  
} T2Z[AvNXFk  
<e6=% 9  
选择排序: I Ru$oF}  
}NX\~S"  
package org.rut.util.algorithm.support; liNON  
H$-$2?5  
import org.rut.util.algorithm.SortUtil; 1BD6 l2y  
C?Qf F{!7  
/** t,vTAq.))  
* @author treeroot $M]%vG  
* @since 2006-2-2 zw:/!MS  
* @version 1.0 \kwe51MQ  
*/ +|nsu4t,<  
public class SelectionSort implements SortUtil.Sort { gB CC  
{>.>7{7  
/* m(3);)d  
* (non-Javadoc) 4IGxI7~27#  
* T=? bdIl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TJ2/?p\x  
*/ iiwpSGFl]  
public void sort(int[] data) { uaQ&&5%%J  
int temp; h1%y:[_  
for (int i = 0; i < data.length; i++) { ?\yB)Nd y  
int lowIndex = i; :2q ?>\  
for (int j = data.length - 1; j > i; j--) { p\ txlT  
if (data[j] < data[lowIndex]) { AZ8UXq  
lowIndex = j; pa] TeH  
} -v*x V;[  
} gv` h-b  
SortUtil.swap(data,i,lowIndex); |z7dRDU}]  
} c=t*I0-OVS  
} Z oTNm  
urxqek  
} w?ai,Pw  
pB'x_z  
Shell排序: 5K(n3?1z)  
O`[]xs  
package org.rut.util.algorithm.support; *#ompm  
ucFw,sB1  
import org.rut.util.algorithm.SortUtil; ip5u_Xj ?  
r|8V @.@i  
/** 3Bd4 C]E  
* @author treeroot Y<ElJ>A2I  
* @since 2006-2-2 $PfV<Yj'B  
* @version 1.0 >DmRP7v   
*/ 7jZrU|:yu(  
public class ShellSort implements SortUtil.Sort{ )% |r>{  
HU3Vv<lz  
/* (non-Javadoc) bf^ly6ml  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uf0^E3H  
*/ c20|Cx2m  
public void sort(int[] data) { .5k^f5a  
for(int i=data.length/2;i>2;i/=2){ M7H~;S\3IM  
for(int j=0;j insertSort(data,j,i); ]EX--d<_`  
} 7+] F^ 6  
} B=x~L  
insertSort(data,0,1); 2vXGO|W  
} uk{J@&F  
G+Ei#:W,  
/** ;G$)MS'nB  
* @param data 9l=Fv6  
* @param j }moz9a  
* @param i #y`k$20"  
*/ e6es0D[>5  
private void insertSort(int[] data, int start, int inc) { - coy@S=.'  
int temp; ~g96o81V  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E#~2wqK  
} Gm*Uv6?H?  
} ht$ WF  
} B#H2RTc  
$:HLRl{2E  
} W.GN0(uG  
*%f3rvt7@)  
快速排序: 'v`~(9'Rcj  
G32_FQ$ b  
package org.rut.util.algorithm.support; k%a?SU<f  
x_pMG!2  
import org.rut.util.algorithm.SortUtil; ;op'V6iG  
qSCTFJ0  
/** K/A ? ]y  
* @author treeroot (HaU,vP  
* @since 2006-2-2 v @_?iC"`  
* @version 1.0 "$%{}{#W0  
*/ 4] M =q{  
public class QuickSort implements SortUtil.Sort{ HO G=c!b  
[@s=J)H  
/* (non-Javadoc) 9M19 UP&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E- [:. &  
*/ =z']s4  
public void sort(int[] data) { i!ds{`d  
quickSort(data,0,data.length-1); z'v9j_\  
} pJ$(ozV  
private void quickSort(int[] data,int i,int j){ *@=fq|6l 2  
int pivotIndex=(i+j)/2; A<1l^%i  
file://swap FL~9</  
SortUtil.swap(data,pivotIndex,j); o|BFvhg  
="=#5C  
int k=partition(data,i-1,j,data[j]); k@lXXII ?  
SortUtil.swap(data,k,j); ]qF<Zw7  
if((k-i)>1) quickSort(data,i,k-1); 5]Z]j[8Y  
if((j-k)>1) quickSort(data,k+1,j); 7a27^b  
k.h^ $f  
} )<tzm'Rc  
/** 8:BQHYeJK  
* @param data oO}>i0ax*  
* @param i X$ejy/+.  
* @param j 3 pHn_R  
* @return )SC`6(GW  
*/ .w=:+msL{(  
private int partition(int[] data, int l, int r,int pivot) { T[mw}%3<v  
do{ 9O2a | d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |' !7F9GP  
SortUtil.swap(data,l,r); [_h.1oZp~  
} tzP@3+.w  
while(l SortUtil.swap(data,l,r); U5 -zB)V  
return l; ~m3V]v(q7  
} @ICejB<  
/6A:J]Q_  
} }b<87#Nb9R  
ArLz;#AOn  
改进后的快速排序: ejDCmD  
wZ}n3R,   
package org.rut.util.algorithm.support; "o~N42DLB%  
Pi^ECSzQu[  
import org.rut.util.algorithm.SortUtil; -+`az)lrp  
9 #.<E5:  
/** knI*-  
* @author treeroot @DUN;L 4  
* @since 2006-2-2 QGu7D #%|  
* @version 1.0 F?!};~$=Z  
*/ &3+1D1"y/  
public class ImprovedQuickSort implements SortUtil.Sort { _?*rtDzIM  
Jq=X!mT d.  
private static int MAX_STACK_SIZE=4096; A;b=E[i v  
private static int THRESHOLD=10; h,Y{t?Of  
/* (non-Javadoc) :$+D 2*(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c g3Cl[s  
*/ 3m?@7F  
public void sort(int[] data) { ID_|H?.  
int[] stack=new int[MAX_STACK_SIZE]; uVoF<={  
wCTcGsw W  
int top=-1; )<m=YI ;<  
int pivot; 8b8e^\l(  
int pivotIndex,l,r; z|taa;iM  
wi![0IE )  
stack[++top]=0; [w+yQ7P  
stack[++top]=data.length-1; 9;r48)5  
?*(r1grHl  
while(top>0){ ~m009  
int j=stack[top--]; f]{1ZU%4  
int i=stack[top--]; \pT^Zhp)  
)F=JkG  
pivotIndex=(i+j)/2; 58a)&s[+  
pivot=data[pivotIndex]; Vq?8u/  
FCUVP,"T  
SortUtil.swap(data,pivotIndex,j); rQ 9?N^&!%  
}L{_xyi>#  
file://partition Y#Sd2h,^X  
l=i-1; 3Qm t]q  
r=j; 9y d-&yDG  
do{ FkB6*dm-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GF$rPY[  
SortUtil.swap(data,l,r); _#y(w%  
} 2^k^"<h5j  
while(l SortUtil.swap(data,l,r); Dohl,d  
SortUtil.swap(data,l,j); uyS^W'fF  
{7j6$.7J$&  
if((l-i)>THRESHOLD){ 3N)Ycf8  
stack[++top]=i; :G6 xJlE|  
stack[++top]=l-1; ~_/<PIm  
} \Nh^Ig   
if((j-l)>THRESHOLD){ D]LFX/hlH  
stack[++top]=l+1; rH [+/&w5  
stack[++top]=j; E.WNykF-  
} 9Y!0>&o  
P22y5z~  
} DKaG?Y,*p  
file://new InsertSort().sort(data); )U"D4j*p  
insertSort(data); [<@A8Q5,y  
} 8\W3Fv Q  
/** n9mM5H47  
* @param data ImT+8p a  
*/ rTm>8et  
private void insertSort(int[] data) { P?yOLG+)l)  
int temp; WsK"^"Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @[[C s*-  
} Y3sNr)qss  
} etQx>U  
} )f:!#v(K  
CguU+8 ]  
} zO7lsx2 =  
OoU'86)  
归并排序: %Hl:nT2M  
3=G5(0  
package org.rut.util.algorithm.support; y~#R:&d"  
7#~m:K@  
import org.rut.util.algorithm.SortUtil; &zg$H,@Qp  
v3VLvh 2)n  
/** \M3NasZ  
* @author treeroot %i]uW\~U  
* @since 2006-2-2 v"Ud mv"  
* @version 1.0 D KMbs   
*/ X,C/x)  
public class MergeSort implements SortUtil.Sort{ ><:lUt*N2  
jmA{rD W  
/* (non-Javadoc) Cs6zv>SR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >uqS  
*/ L`VQ{|&3V  
public void sort(int[] data) { R fVV(X  
int[] temp=new int[data.length]; hBYh90]  
mergeSort(data,temp,0,data.length-1); ,sRrV $,"  
} )sz 2 9  
66Cj=n5  
private void mergeSort(int[] data,int[] temp,int l,int r){ BSq;R G(  
int mid=(l+r)/2; L2V $%*6  
if(l==r) return ; aLyhxmn ^)  
mergeSort(data,temp,l,mid); (Db*.kd8,  
mergeSort(data,temp,mid+1,r); VUg~[  
for(int i=l;i<=r;i++){ d9Ow 2KrC  
temp=data; !_/8!95  
} y1jGf83  
int i1=l; t"Vr;0!{  
int i2=mid+1; 41+E UMc  
for(int cur=l;cur<=r;cur++){ fSQ3 :o  
if(i1==mid+1) <EMLiiNY  
data[cur]=temp[i2++]; ?'8MI|*l%  
else if(i2>r) aaa#/OWQZ  
data[cur]=temp[i1++]; uN? O*h/(  
else if(temp[i1] data[cur]=temp[i1++]; :Jsz"vCg&s  
else VQW)qOR9  
data[cur]=temp[i2++]; VdN+~+A:  
} T\b";+!W  
} si"mM>e  
4'4s EjyA  
} 'zD;:wT  
w|UKMbRMU]  
改进后的归并排序: Kt&$Si  
1SJHX1CxX  
package org.rut.util.algorithm.support; =LeVJGF  
BBuYO$p  
import org.rut.util.algorithm.SortUtil; (qc!-Isd~[  
DoPF/m}  
/** I5<#SW\a?  
* @author treeroot piM11W}|/  
* @since 2006-2-2 p6k'Q  
* @version 1.0 dxhjPS~^Q  
*/ 1wNY}3  
public class ImprovedMergeSort implements SortUtil.Sort { pl^"1Z=*  
uD*s^  
private static final int THRESHOLD = 10; rsIPI69qJ.  
d_?Zr`:  
/* N=?kEX O  
* (non-Javadoc) '>lPq tdZ  
* !6 fpMo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =D"63fP1  
*/ +\(ay"+ d  
public void sort(int[] data) { s)'_{ A"h  
int[] temp=new int[data.length]; `] dx%  
mergeSort(data,temp,0,data.length-1); {p_vR/ yN  
} #o |&MV_j  
a.*j8T  
private void mergeSort(int[] data, int[] temp, int l, int r) { $}"Wta  
int i, j, k; y2ws*IZ"  
int mid = (l + r) / 2; QT&Ws+@ s{  
if (l == r) ah$7 Oudj  
return; 1#X= &N  
if ((mid - l) >= THRESHOLD) ^1& LHrT  
mergeSort(data, temp, l, mid); "jN-Yd,z  
else `/j|Rb|eow  
insertSort(data, l, mid - l + 1); `0WA!(W  
if ((r - mid) > THRESHOLD) H2R^t{ w  
mergeSort(data, temp, mid + 1, r); ]GPz>k  
else DP'Dg /D  
insertSort(data, mid + 1, r - mid); r D!.N   
*/dsMa  
for (i = l; i <= mid; i++) { `]I5WTt*X  
temp = data; N(/<qv  
} 5 Yibv6:3a  
for (j = 1; j <= r - mid; j++) { KJ{F,fr+v  
temp[r - j + 1] = data[j + mid]; 4JQ`&:?r  
} ydFhw}1>  
int a = temp[l]; 3f.Gog  
int b = temp[r]; L-:L= snO  
for (i = l, j = r, k = l; k <= r; k++) { tJF~Xv2L!  
if (a < b) { GBOmVQ $Hb  
data[k] = temp[i++]; G?1V~6  
a = temp; ``)1`wx$  
} else { yt#;3  
data[k] = temp[j--]; NF.6(PG|  
b = temp[j]; V +<AG*[  
} nXaX=  
} (<~ R[sT|  
} >oaEG5%d  
L<>NL$CrN  
/** NHVx!Kc  
* @param data *RE-K36m|u  
* @param l |DS@90}  
* @param i F?AfB[PM  
*/ l7y`$8Co  
private void insertSort(int[] data, int start, int len) { )0V]G{QN  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3S|;yOl#X  
} Dj&bHC5%  
} ?-&D'  
} c5+lm}R?  
} , p=8tf#  
IMw)X0z  
堆排序: %1+~(1P  
N}<U[nh'  
package org.rut.util.algorithm.support; .wOLi Ms  
JkDZl?x5  
import org.rut.util.algorithm.SortUtil; 'Mhdw}  
tSLl'XeN  
/** V>j`  
* @author treeroot f9=X7"dzP  
* @since 2006-2-2 )KQv4\0y<  
* @version 1.0 uB"m!dL  
*/ BU{ V,|10a  
public class HeapSort implements SortUtil.Sort{ kAQZj3P]  
.-6s`C2 Y}  
/* (non-Javadoc) ,$ret@.H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !PTbR4s  
*/ (G!J==  
public void sort(int[] data) { q x }fn/:  
MaxHeap h=new MaxHeap(); 0c6AQP"=V  
h.init(data); -t#a*?"$w  
for(int i=0;i h.remove(); }ucg!i3C  
System.arraycopy(h.queue,1,data,0,data.length); QHz76i!=>  
} d"a7{~l  
7%}}m&A7h  
private static class MaxHeap{ uy\+#:44d  
: 2d9ZDyD  
void init(int[] data){ MpvA--  
this.queue=new int[data.length+1]; )%c)-c  
for(int i=0;i queue[++size]=data; )O(Gw-jWE  
fixUp(size); f^)nZ:~  
} jM<Ihmh|  
} 3`q`W9  
?q&mI*j!  
private int size=0; yKhzymS}T  
;$;/#8`>  
private int[] queue; ?bA]U:  
f|E'eFrFk  
public int get() { j"=jK^  
return queue[1]; @C)h;TR  
} ,gD i)]  
E #]%e^  
public void remove() { |mA*[?ye@  
SortUtil.swap(queue,1,size--); mmK_xu~f28  
fixDown(1); C(+BrIS*  
} )$g /PQ  
file://fixdown }'- )  
private void fixDown(int k) { DZZt%n8J  
int j; 5E|2 S_)G  
while ((j = k << 1) <= size) { 0~+ k  
if (j < size %26amp;%26amp; queue[j] j++; 'm:B(N@+  
if (queue[k]>queue[j]) file://不用交换 =? aB@&  
break; __npX_4%S  
SortUtil.swap(queue,j,k); #O ]IXo(5z  
k = j; aoX$,~oI5  
} 4!|ar?Zy  
} r&RSQHa)  
private void fixUp(int k) { ^Y |s^N  
while (k > 1) { =c 4U%d2  
int j = k >> 1; J6P Tkm}^  
if (queue[j]>queue[k]) q;JQs:U!  
break; u9(AT>HxT  
SortUtil.swap(queue,j,k); C(hg"_W ou  
k = j; + k:?;ZG  
} ?Fv(4g  
} Lo4t:H&  
ks4 ,2f,2  
} n4,J#h/  
%9M49 s  
} x$I>e  
MG>;|*$%  
SortUtil: ,//=yW  
=G6@:h=  
package org.rut.util.algorithm; |7'W)s5.  
M$9h)3(B  
import org.rut.util.algorithm.support.BubbleSort; y0]O 6.{  
import org.rut.util.algorithm.support.HeapSort; sqRuqUj+  
import org.rut.util.algorithm.support.ImprovedMergeSort; G= e[TR)i  
import org.rut.util.algorithm.support.ImprovedQuickSort; :8 :>CHa  
import org.rut.util.algorithm.support.InsertSort; Nx'j+>bz>y  
import org.rut.util.algorithm.support.MergeSort; K6oLSr+EAK  
import org.rut.util.algorithm.support.QuickSort; Hy'&x?F6  
import org.rut.util.algorithm.support.SelectionSort; (""&$BJQ|  
import org.rut.util.algorithm.support.ShellSort; ^lj>v}4fkW  
~ .-'pdz%  
/** 0jH2. d=  
* @author treeroot + >j_[O5Y  
* @since 2006-2-2 uyIA]OtyN  
* @version 1.0 ,88}5)b[  
*/ s]UeDZ <a  
public class SortUtil { P])O\<)J  
public final static int INSERT = 1; K~R{q+  
public final static int BUBBLE = 2; C/G[B?:h  
public final static int SELECTION = 3; j/&7L@Y  
public final static int SHELL = 4; 7dZ!GX?\y  
public final static int QUICK = 5; Jjv&@a}  
public final static int IMPROVED_QUICK = 6; 8wOPpdc  
public final static int MERGE = 7; wC~Uy%  
public final static int IMPROVED_MERGE = 8; 7 pV3#fQ  
public final static int HEAP = 9; C.O-iBVe#  
10(N|2'q  
public static void sort(int[] data) { u QCS%|8C  
sort(data, IMPROVED_QUICK); ]LjW,b"  
} Re_.<_$  
private static String[] name={ t|%ul6{gz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =UN:IzT  
}; G].Z| Z9  
]h6<o*  
private static Sort[] impl=new Sort[]{ tEl_A"^e  
new InsertSort(), }<p%PyM  
new BubbleSort(), I]58;|J  
new SelectionSort(), %O k.XBS)  
new ShellSort(), vHmn)d1pl  
new QuickSort(), I6+5mv\  
new ImprovedQuickSort(), "\ md  
new MergeSort(), , {^g}d8  
new ImprovedMergeSort(), %|Vq"MW,I  
new HeapSort() 1ARIZ;H  
}; ^Ue>T 8  
W;7cF8fu4  
public static String toString(int algorithm){ a9%# J^ !  
return name[algorithm-1]; [/FIY!nC?  
} BZ.H6r'Q  
cVN|5Y   
public static void sort(int[] data, int algorithm) { 7o3f5"z  
impl[algorithm-1].sort(data); *"wsMO  
} NeH^g0Q2,g  
GI/o!0"_  
public static interface Sort { 70@:!HI]  
public void sort(int[] data); bA:abO  
} SX#ATf6#  
0t8-oui  
public static void swap(int[] data, int i, int j) { [LE_lATjU  
int temp = data; 3$_wAt4w  
data = data[j]; Ktoxl+I?  
data[j] = temp; L fhd02  
} *:iFhKFU  
} JdE=!~\8  
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