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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。 ger<JSL%  
插入排序: 0uz"}v)  
Rpk`fxAO  
package org.rut.util.algorithm.support; AVr!e   
jVINc=o  
import org.rut.util.algorithm.SortUtil; K*Jtyy}r  
/** K|G $s  
* @author treeroot ja;5:=8A5  
* @since 2006-2-2 Vi#im`@  
* @version 1.0 >>$|,Q-.  
*/ [tzSr=,Cg  
public class InsertSort implements SortUtil.Sort{ %)9]dOdOk  
]K7  64}  
/* (non-Javadoc)  /Xz4q!Ul  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +*J4q5;E[?  
*/ c2^7"`  
public void sort(int[] data) { OkZ!ZS h  
int temp; psC7I E<v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I{zE73  
} XX-T",  
} q&E5[/VK:  
} fqb$_>3Ol  
C.E> )  
} A7C+&I!L  
A E&n^vdQW  
冒泡排序: GX)QIe~;qJ  
g8+,wSE  
package org.rut.util.algorithm.support; *$(CiyF!  
@(c<av?  
import org.rut.util.algorithm.SortUtil; @S7=6RKa[  
H040-Q;S'  
/** : xZC7"  
* @author treeroot aELT"b,x  
* @since 2006-2-2 h!K2F~i{P  
* @version 1.0 ['emP1g~  
*/ %h"< IA S.  
public class BubbleSort implements SortUtil.Sort{ ({KAh?  
dCP Tpm  
/* (non-Javadoc)  s7 o*|Xv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #`4^zU)  
*/ t4@g;U?o  
public void sort(int[] data) { 6\Vu#r  
int temp; MNqyEc""  
for(int i=0;i for(int j=data.length-1;j>i;j--){ g u =fq\`  
if(data[j] SortUtil.swap(data,j,j-1); \hW73a!  
} eH955[fVd4  
} Sqf.#}u<=  
} KN:dm!A  
} :EwA$`/  
%_MR.J+m2  
} oRThJB  
[7 `Dgnmq  
选择排序: tgtoK|.  
xqWrW)  
package org.rut.util.algorithm.support; ,?<h] !aQ  
m]d6@"Z.  
import org.rut.util.algorithm.SortUtil; ^Cn]+0G#C8  
ff1B)e  
/** HoE.//b  
* @author treeroot R9/xC7l@  
* @since 2006-2-2 0t/y~TrBY  
* @version 1.0 ,,_K/='m  
*/ |D`b7h  
public class SelectionSort implements SortUtil.Sort { Y"kS!!C>[  
u7zB9iQ&  
/* Gd6 ;'ZCmY  
* (non-Javadoc) oHXW])[  
* UUf1T@-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aE+$&_>ef  
*/ .cS,T<$  
public void sort(int[] data) { 0aTbzOn&  
int temp; G\N"rG=  
for (int i = 0; i < data.length; i++) { 7]xz8t  
int lowIndex = i; qm8n7Z/  
for (int j = data.length - 1; j > i; j--) { C.)&FW2F_  
if (data[j] < data[lowIndex]) { Bb [e[,ah  
lowIndex = j; gDNTIOV  
} y2"S\%7$h  
} z!C4>,  
SortUtil.swap(data,i,lowIndex); G\>\VA  
} +.#S[G  
} `J#xyDL6?  
l[ ": tG  
} a]Da`$T  
uM)9b*Vbo  
Shell排序: n+\Cw`'<H  
1X"H6j[w  
package org.rut.util.algorithm.support; ^ $+f3Z'  
QGv:h[b_  
import org.rut.util.algorithm.SortUtil; @~#79B"9&  
AzO3(1:  
/** EXW 6yXLV  
* @author treeroot wJos'aTmE  
* @since 2006-2-2 k3/JQ]'D  
* @version 1.0 [^d6cMEOlc  
*/ ok%a|Zz+]  
public class ShellSort implements SortUtil.Sort{ ooU Sb  
dbT^9: Q  
/* (non-Javadoc) }:9|*m<$t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?sf2h:\N  
*/ oj(A`[  
public void sort(int[] data) { D*T$ v   
for(int i=data.length/2;i>2;i/=2){ wdcryejCkr  
for(int j=0;j insertSort(data,j,i); h/0-Mrk;e  
} lmtQr5U  
} z@l!\m-  
insertSort(data,0,1); C+(Gg^ w  
} Z>Kcz^a#  
.)^3t ~  
/** _/%]:  
* @param data FQ|LA[~  
* @param j n?e@):  
* @param i o eJC  
*/ Z!RRe]"y  
private void insertSort(int[] data, int start, int inc) { `YmI'  
int temp; Q0q)n=i }]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )' x/q  
} H&yFSz}6a  
} \|pK Z6*s  
} wO_pcNYZ8  
A.$VM#  
} RZ)vU'@kx  
1f@U :<:  
快速排序: uWR,6\_jY  
HDSA]{:sl  
package org.rut.util.algorithm.support; z@%/r~?|  
~Miin   
import org.rut.util.algorithm.SortUtil; {F(-s"1;xO  
$O~F>.*  
/** K+ 7yUF8XP  
* @author treeroot 01-\:[{  
* @since 2006-2-2 q(&^9"  
* @version 1.0 _]=TFz2O  
*/ cEdz;kbUM  
public class QuickSort implements SortUtil.Sort{ *<.WL"Qhl  
Yn$>QS 4  
/* (non-Javadoc) SD|4ybK>d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c5iormb"#  
*/ m.HX2(&\3  
public void sort(int[] data) { -@ UN]K  
quickSort(data,0,data.length-1); k;K> ,$ F  
} z%}CB Tm  
private void quickSort(int[] data,int i,int j){ ]cLEuE^&  
int pivotIndex=(i+j)/2; ~aqT~TL_  
file://swap liCCc;&B;  
SortUtil.swap(data,pivotIndex,j); RQ*|+ ~H  
!4 4mT'Y  
int k=partition(data,i-1,j,data[j]); #.MIW*==  
SortUtil.swap(data,k,j); L.T gJv43  
if((k-i)>1) quickSort(data,i,k-1); ?HEtrX,q  
if((j-k)>1) quickSort(data,k+1,j);  J:~[ j  
p-Rm,xyL%  
} -VreBKn  
/** 3lLW'g&=  
* @param data XUQW;H  
* @param i oieQ2>lYh  
* @param j ~.4W,QLuD  
* @return u"#6_-0y  
*/ o&hKg#nO83  
private int partition(int[] data, int l, int r,int pivot) { *3.yumcv{L  
do{ Z/NGv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1C}pv{0:&  
SortUtil.swap(data,l,r); A"\P&kqMV  
} f74%YY  
while(l SortUtil.swap(data,l,r); ~ C/Yv&58  
return l; e_I; y  
} 0uVk$\:i  
r3[t<xlFf  
} r}_Lb.1]  
;l/}Or2  
改进后的快速排序: +K$5tT6b  
XQ0#0<  
package org.rut.util.algorithm.support; u5cVz_S  
To#E@Nw  
import org.rut.util.algorithm.SortUtil; LY\ddI*s  
KlVi4.]  
/** >YJ8u{Z{o  
* @author treeroot ]/ZA/:Oa+  
* @since 2006-2-2  Vp(D|}P  
* @version 1.0 _XY`UZ  
*/ =9;[C:p0-  
public class ImprovedQuickSort implements SortUtil.Sort { XI@6a9Uk  
` x%U  
private static int MAX_STACK_SIZE=4096; 1qm/{>a-  
private static int THRESHOLD=10;  l5ZADK4  
/* (non-Javadoc) 097Fvt=#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "4Lg8qm  
*/ JAGi""3HG  
public void sort(int[] data) { ^MWEfPt  
int[] stack=new int[MAX_STACK_SIZE]; [ 5CS}FB  
! F0rd9  
int top=-1; _KSfP7VU  
int pivot; A6?qIy  
int pivotIndex,l,r; Aj8l%'h[  
njy~   
stack[++top]=0; };|!Lhl+  
stack[++top]=data.length-1; *<`7|BH3  
TRs[~K)n  
while(top>0){ y'J:?!S,Yu  
int j=stack[top--]; (xk.NZn F  
int i=stack[top--]; `DgaO-Dg3  
1&X}1  
pivotIndex=(i+j)/2; u#a%(  
pivot=data[pivotIndex]; A0cM(w{7_  
38V $<w  
SortUtil.swap(data,pivotIndex,j); ^3Z7dIUww  
olD@W UB  
file://partition l?[{?Luq  
l=i-1; b{~fVil$y  
r=j; %+AS0 JhB  
do{ Wphe%Of  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ewb*?In  
SortUtil.swap(data,l,r); -:)DX++  
} Nk lz_ ]  
while(l SortUtil.swap(data,l,r); n~1tm  
SortUtil.swap(data,l,j); R4#;<)  
CTh1+&Pa  
if((l-i)>THRESHOLD){ uI%N?  
stack[++top]=i; 4)3g!o ?  
stack[++top]=l-1; &ui:DZAxj|  
} );Tx5Z}  
if((j-l)>THRESHOLD){ {c v;w  
stack[++top]=l+1; 6V'wQqJ  
stack[++top]=j; /M0l p   
} 3[MdUj1y[  
@Ufa -h5"(  
}  =3h+=l[  
file://new InsertSort().sort(data); !7A"vTs  
insertSort(data); SL[rn<x|  
} :wQC_;  
/** ??%)|nj.  
* @param data Zij"/gx\  
*/ 7!O^;]+,  
private void insertSort(int[] data) { R<0Fy=z  
int temp; KotPV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +90u!r^v  
} @PYW|*VS  
} E)KB@f<g*  
} f:_=5e +  
Oq #o1>  
} DY)D(f/&3  
n?y'c^  
归并排序: Dl0/-=L  
F{TC#J}I%'  
package org.rut.util.algorithm.support; y<O@rD8iA  
WuBmdjZ  
import org.rut.util.algorithm.SortUtil; * <B)Z  
yr FZ~r@-  
/** xCR; K]!  
* @author treeroot ]XmQ]Yit  
* @since 2006-2-2 whV&qe;sw  
* @version 1.0 6P0y-%[Gk  
*/ c Dfx)sL  
public class MergeSort implements SortUtil.Sort{ LiiK3!^i  
<\>+~p,  
/* (non-Javadoc) @)9REA(U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jb( DJ-&  
*/ Ya~ "R#Uy  
public void sort(int[] data) { 99J+$A1  
int[] temp=new int[data.length]; PPUEkvH W  
mergeSort(data,temp,0,data.length-1); IO}+[%ptc*  
} Xy:Gj, @  
n"(7dl?  
private void mergeSort(int[] data,int[] temp,int l,int r){ BmJkt3j."  
int mid=(l+r)/2; ZrFr`L5F;  
if(l==r) return ; 4O$mR  
mergeSort(data,temp,l,mid);  pgC d  
mergeSort(data,temp,mid+1,r); ?g5iok {  
for(int i=l;i<=r;i++){ 4BHtR017r  
temp=data; +#0~:&!9  
} 0('OyH)  
int i1=l; aL88E  
int i2=mid+1; \s,Iz[0Vfz  
for(int cur=l;cur<=r;cur++){ 7@FDBjq  
if(i1==mid+1) Kp8fh-4_  
data[cur]=temp[i2++]; )V=0IZi  
else if(i2>r) V{43HA10b  
data[cur]=temp[i1++]; xC<R:"Mn  
else if(temp[i1] data[cur]=temp[i1++]; |a%B|CX  
else 5i|s>pD4z1  
data[cur]=temp[i2++]; ):/,w!1  
}  ~q*i;*  
} PoJmW^:}  
`tX@8|  
} Nfr:`$k  
z9^c]U U)E  
改进后的归并排序: Cy`26[E$S  
F|,6N/;!W  
package org.rut.util.algorithm.support; ldK>HxM%Z  
s\6N }[s  
import org.rut.util.algorithm.SortUtil; +yGY 785b  
p=2zS.  
/** {W-5:~?"  
* @author treeroot Dh2#$[/@1  
* @since 2006-2-2 3Hs$]nQ_X  
* @version 1.0 DUqJ y*F(  
*/ w nWgy4:  
public class ImprovedMergeSort implements SortUtil.Sort { B#1:Y;Z  
"<qEXX  
private static final int THRESHOLD = 10; b9`iZ  
o\&~CW~@~  
/* `(3SfQ-  
* (non-Javadoc) q1STRYb   
* aQga3;S!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %?Rs*-F.~1  
*/ e]>/H8  
public void sort(int[] data) { *vb^N0P  
int[] temp=new int[data.length]; n|6?J_{<b>  
mergeSort(data,temp,0,data.length-1); 'm[6v}  
} 2%5?F n=  
D@#0dDT  
private void mergeSort(int[] data, int[] temp, int l, int r) { XjxPIdX_H  
int i, j, k; #$FY+`  
int mid = (l + r) / 2; n"iNKR>nW  
if (l == r) CldDr<k3  
return; :VJV5f{  
if ((mid - l) >= THRESHOLD) N ,+(>?yE  
mergeSort(data, temp, l, mid); * flWL  
else r?\|f:M3  
insertSort(data, l, mid - l + 1); )AJ=an||5  
if ((r - mid) > THRESHOLD) wEE2a56L-  
mergeSort(data, temp, mid + 1, r); GYd]5`ri  
else EA6t36|TX  
insertSort(data, mid + 1, r - mid); +GYS26  
W+.{4 K  
for (i = l; i <= mid; i++) { inZi3@h)T  
temp = data; jM]d'E?ZLA  
} ALfiR(!  
for (j = 1; j <= r - mid; j++) { 3^XVQS***  
temp[r - j + 1] = data[j + mid]; ka#K [qI  
} t}VwVf<K  
int a = temp[l]; 6%E~p0)i%  
int b = temp[r]; nx B32  
for (i = l, j = r, k = l; k <= r; k++) { Q{[@`bZB  
if (a < b) { Lbsr_*4t  
data[k] = temp[i++]; 9^au$KoU  
a = temp; +>4^mE" \  
} else { iTu0T!4F  
data[k] = temp[j--]; )%qtE34`  
b = temp[j]; ~\ [?wN  
} p'g^Wh  
} %&tb9_T)d  
} IO"hF  
gJh}CrU-  
/** 2 Kl a8  
* @param data Ssf+b!e]  
* @param l MQJ%He"  
* @param i 3"Yif  
*/ 0yz~W(tsm  
private void insertSort(int[] data, int start, int len) { BRa{\R^I  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9_UN.]  
} +bUW!$G  
} -TTs.O8P|<  
} x#mtS-sw2Q  
} >fH*XP>(  
vr4O8#  
堆排序: ;%W dvnW  
@(>XOj?+  
package org.rut.util.algorithm.support; (i]Z|@|)  
Tm_8<$ 7  
import org.rut.util.algorithm.SortUtil; =JW[pRI5a  
AWT"Y4Ie  
/** U<[jT=L  
* @author treeroot Oc~aW3*A(  
* @since 2006-2-2 csDQva\  
* @version 1.0 w12}Rn8  
*/ y(}Eko4u5  
public class HeapSort implements SortUtil.Sort{ ?mU\ N0o  
Yb 6q))Y  
/* (non-Javadoc) kYlg4 .~M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _B[WY  
*/ :6D0j  
public void sort(int[] data) { L M /Ga  
MaxHeap h=new MaxHeap(); Jq)U</  
h.init(data); /H)Br~ l  
for(int i=0;i h.remove(); {cR=N~_EO  
System.arraycopy(h.queue,1,data,0,data.length); Rh<N);Sl7  
} +c) TDH  
#9:2s$O[x  
private static class MaxHeap{ bi$VAYn.^  
=EpJZt  
void init(int[] data){ 0hwj\{"  
this.queue=new int[data.length+1]; |dk[cX>  
for(int i=0;i queue[++size]=data; 8W -@N  
fixUp(size); 1 i3k  
} xA #H0?a]  
} k':s =IXW  
>f$NzJ}  
private int size=0; vq>l>as9O  
b\giJ1NJB  
private int[] queue; R=M!e<'  
/ M@ PO"  
public int get() { :YNp8!?T?  
return queue[1]; 56{I`QjX  
} 3m=2x5 {L  
~O03Sit-  
public void remove() { v{y{sA  
SortUtil.swap(queue,1,size--); J(s;$PG  
fixDown(1); 6I>^Pf'ND  
} h1f8ktF  
file://fixdown 7&+Ys  
private void fixDown(int k) { @G*.1;jO  
int j; MhxDV d  
while ((j = k << 1) <= size) { c AEokP  
if (j < size %26amp;%26amp; queue[j] j++; )yj:PY]  
if (queue[k]>queue[j]) file://不用交换 J@]k%h  
break; w4%AJmt  
SortUtil.swap(queue,j,k); B4Lx{u no  
k = j; ,S!w'0k|n  
} mQr0sI,o]  
} 8\# ^k#X  
private void fixUp(int k) { 2d`c!  
while (k > 1) { @;Y~frT  
int j = k >> 1; _u5dC   
if (queue[j]>queue[k]) /S~m)$vu  
break; %Q~CB7ILK  
SortUtil.swap(queue,j,k); }ZzLs/v%X  
k = j; Lgi[u"Du  
} ]db@RbaH  
} kg>>D  
o@k84+tn(  
} A 5nO=  
0m)&Y FZ[(  
} 4l @)K9F  
AIZBo@xg  
SortUtil: !p[`IWZ  
op@i GC+  
package org.rut.util.algorithm; LM"y\q ]  
DDeE(E  
import org.rut.util.algorithm.support.BubbleSort; 50n}my'2h  
import org.rut.util.algorithm.support.HeapSort; z-,VnhLx  
import org.rut.util.algorithm.support.ImprovedMergeSort; q SD9Pue  
import org.rut.util.algorithm.support.ImprovedQuickSort; \ZH&LPAY  
import org.rut.util.algorithm.support.InsertSort; qZ X/@Yxz  
import org.rut.util.algorithm.support.MergeSort; DC:)Ysuj  
import org.rut.util.algorithm.support.QuickSort; E\th%q,mG  
import org.rut.util.algorithm.support.SelectionSort; s 3r=mp{  
import org.rut.util.algorithm.support.ShellSort; 4c159wsnQ  
fn}UBzED\  
/** DtF}Qv A  
* @author treeroot D7 ?C  
* @since 2006-2-2 W?z#pV+jt  
* @version 1.0 '\~^TFi  
*/ qf8[!5GM  
public class SortUtil { k \qiF|B)Z  
public final static int INSERT = 1; e@n!x}t8  
public final static int BUBBLE = 2; L?RF;jf  
public final static int SELECTION = 3; nE|@IGH  
public final static int SHELL = 4; Em^ (  
public final static int QUICK = 5; yL1CZ_  
public final static int IMPROVED_QUICK = 6; 2]WE({P  
public final static int MERGE = 7; mT.e>/pa  
public final static int IMPROVED_MERGE = 8; aGoE,5  
public final static int HEAP = 9; 7r 0,> 3"  
;3m!:l  
public static void sort(int[] data) { i8PuC^]  
sort(data, IMPROVED_QUICK); N1x@-/xa|  
} d,cN(  
private static String[] name={ '&yeQ   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jbmTmh1q  
}; Y(6Sp'0  
..<3%fL3  
private static Sort[] impl=new Sort[]{ Wa'sZ#  
new InsertSort(), Q-eCHr)  
new BubbleSort(), g,kzQ}_  
new SelectionSort(), JPx7EEkZR4  
new ShellSort(), ;#k-)m%  
new QuickSort(), q/gB<p9  
new ImprovedQuickSort(), (@sp/:`6  
new MergeSort(), R,_d1^|*w  
new ImprovedMergeSort(), >e&:`2%.  
new HeapSort() -?a<qa?$  
}; GWP dv  
<4`eQ  
public static String toString(int algorithm){ P?ep]  
return name[algorithm-1]; Re= WfG  
} C)RBkcb  
e@]Wh)  
public static void sort(int[] data, int algorithm) { pa<qZZ  
impl[algorithm-1].sort(data); #kmh:P  
} _GoVx=t   
KL?)akk  
public static interface Sort { Pz"`MB<'Ik  
public void sort(int[] data); L;6.r3bL  
} #AViM_u  
olYsT**'  
public static void swap(int[] data, int i, int j) { @aG&n(.!u*  
int temp = data; -yx/7B5@  
data = data[j]; nU z7|y  
data[j] = temp; g:#d l\k  
} !<\Br  
} v"Jgw;3  
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