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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。 x84!/n^z  
插入排序:  < $~lFV  
_gvFs %J  
package org.rut.util.algorithm.support; ;[v!#+yml  
37#&:[w>  
import org.rut.util.algorithm.SortUtil; _C?j\Wy  
/** CdolZW-!"  
* @author treeroot :QE5 7 .  
* @since 2006-2-2 {%V(Dd[B6  
* @version 1.0 { i5?R,a)  
*/ Yh":>~k?SY  
public class InsertSort implements SortUtil.Sort{ {ZJO5*  
m|a9T#B(  
/* (non-Javadoc) =kjKK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >rSjP1-F  
*/ (o^tmH*  
public void sort(int[] data) { 067c/ c  
int temp; _Cmmx`ln  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "[bkdL<  
} L$ZjMJ  
} yk+ 50/L  
} 88g3<&  
i]JTKL{\q  
} ~f/|bcep  
<Vat@e  
冒泡排序: Wh[QR-7Ew  
`zd,^.i5~  
package org.rut.util.algorithm.support; vCzZjGBY  
*FS8]!Qg  
import org.rut.util.algorithm.SortUtil; KII{GDR]  
a:kAo0@":j  
/** D31X {dJ  
* @author treeroot ?|nl93m  
* @since 2006-2-2 o`U}u qrO  
* @version 1.0 LCF}Y{  
*/ Dd3f@b[WX  
public class BubbleSort implements SortUtil.Sort{ -;""l{  
=o@;K~-  
/* (non-Javadoc) 3uL f0D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >p_W(u@ z$  
*/ Wn%P.`o#  
public void sort(int[] data) { i Ha?b2=)  
int temp; =u.@W98, K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ XlmX3RU  
if(data[j] SortUtil.swap(data,j,j-1); 5E!C?dv(z  
} &5 CRXf  
} ]?9*Vr:P^  
} nL@'??I1  
} XJ18(Q|w'  
K$"#SZEi  
} Ayz*2 N`%  
MK&,2>m,A  
选择排序: u[>"_!T  
(jc@8@Wo.  
package org.rut.util.algorithm.support; <2$vo  
y Zaf q"o  
import org.rut.util.algorithm.SortUtil; j\2Qe %d  
SSK}'LQ  
/** ?=u?u k<-  
* @author treeroot PmR].Ohzi  
* @since 2006-2-2 inP2y?j  
* @version 1.0 c[dSO(=  
*/ ,7{|90'V<  
public class SelectionSort implements SortUtil.Sort { ~q$]iwwqT  
S?J!.(  
/* 0w?da~  
* (non-Javadoc) M4^G3c<  
* L%'J]HL-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? SFBUX(p  
*/ l|CM/(99-  
public void sort(int[] data) { _NDQ2O  
int temp; z0"t]4s  
for (int i = 0; i < data.length; i++) { <Ap_#  
int lowIndex = i; r- 8Awa  
for (int j = data.length - 1; j > i; j--) { ^y+k6bE  
if (data[j] < data[lowIndex]) { Z,&O8Jelf  
lowIndex = j; |OeyPD#  
} r\NqY.U&  
} :F(4&e=w  
SortUtil.swap(data,i,lowIndex); |v&)O)Jg  
} Jo?LPR \6  
} VB |?S|<  
uD\R3cY  
} crmQn ^4\  
W .a>K$  
Shell排序: M2$/x`\-~  
u$ts>Q;5  
package org.rut.util.algorithm.support; )aS:h}zn  
b<h((]Q>^  
import org.rut.util.algorithm.SortUtil; 4:/]Y=)x  
0'^M}&zCi  
/** Y}~sTuWU  
* @author treeroot  3Y#Q'r?  
* @since 2006-2-2 `3TR`,=  
* @version 1.0 7B?Y.B  
*/ 7)?C+=,0  
public class ShellSort implements SortUtil.Sort{ H2X_W Swm  
w$]G$e  
/* (non-Javadoc) kmQ:wf:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _c5@)I~  
*/ [2:d@=%.  
public void sort(int[] data) { ym;]3<I?I[  
for(int i=data.length/2;i>2;i/=2){ l*CulVX  
for(int j=0;j insertSort(data,j,i); G[64qhTC  
} ,@*5x'auK  
} rH}|~  
insertSort(data,0,1); $LP(\T([  
} Nr|Gw @+  
eI8o#4nT  
/** UZdnsG7  
* @param data hf`y_H+\7  
* @param j x39tnf/F  
* @param i N,`@Q7  
*/ Agc ss20.  
private void insertSort(int[] data, int start, int inc) { c`E>7Hjr-  
int temp; rZKh}E  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -l[H]BAMXy  
} 5Tsz|k  
} "x$@^  
} oj8r*  
X5WA-s(?0  
} Xo PJ?6 3  
vo/x`F'ib  
快速排序: -rDfDdT  
j.M]F/j  
package org.rut.util.algorithm.support; ^ AZ#tp%)  
y-pdAkDh  
import org.rut.util.algorithm.SortUtil; :zW? O#aL-  
Z$z-Hx@%  
/** [* xdILj  
* @author treeroot 7F`\Gz_2  
* @since 2006-2-2 Ar-Vu{`  
* @version 1.0 FPc `J  
*/ S|tD8A  
public class QuickSort implements SortUtil.Sort{ Z%~}*F}7X  
"&_+!TBg,  
/* (non-Javadoc) M$x,B#b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1wgL^Qz@  
*/ v.ZUYa|  
public void sort(int[] data) { GRc)3 2,  
quickSort(data,0,data.length-1); L15)+^4n  
} \`.v8C>vG  
private void quickSort(int[] data,int i,int j){ &r,vD,  
int pivotIndex=(i+j)/2; EU(e5vO  
file://swap C(>!?-.  
SortUtil.swap(data,pivotIndex,j); [8u9q.IZ  
f2.=1)u.  
int k=partition(data,i-1,j,data[j]); *r.% /^@  
SortUtil.swap(data,k,j); 9O g  
if((k-i)>1) quickSort(data,i,k-1); 9KK^1<46c  
if((j-k)>1) quickSort(data,k+1,j); /&6{}n  
[3dGHf;miw  
} ,Uh^e]pC  
/** +9/K|SB{ $  
* @param data  l!1_~!{y  
* @param i lz^Vi!|p  
* @param j uh\G6s!4/  
* @return _DR@P(0>_  
*/ ^"Bhp:o2  
private int partition(int[] data, int l, int r,int pivot) { NSVE3  
do{ " ILF!z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y`g O:d8  
SortUtil.swap(data,l,r); $YJ 1P  
} Mg >%EH/'  
while(l SortUtil.swap(data,l,r); 6{I7=.V  
return l; &D<6Go/)_*  
} KKwM\   
VjM/'V5  
} @@ j\OR  
\p:)Cdn  
改进后的快速排序: 2K4Xu9-i:b  
<v1H1'gv  
package org.rut.util.algorithm.support; Boj R"  
& n*ga$Q  
import org.rut.util.algorithm.SortUtil; "Lvk?k )hx  
E}Cz(5  
/** [kJ;Uxncz~  
* @author treeroot 0 Rb3| te  
* @since 2006-2-2 WOPIF~1v  
* @version 1.0 , S^y>  
*/ I(UK9H{0$  
public class ImprovedQuickSort implements SortUtil.Sort { Q``1^E'  
hq"n RH  
private static int MAX_STACK_SIZE=4096; rzdQLan  
private static int THRESHOLD=10; qFVZhBC  
/* (non-Javadoc) Vc0j)3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1<:5b%^c  
*/ &wQ<sVQ0$  
public void sort(int[] data) { Cuylozj$&  
int[] stack=new int[MAX_STACK_SIZE]; Dx\~#$S!=  
"d}']M?-h  
int top=-1; ,t_&tbf3  
int pivot; *BxU5)O  
int pivotIndex,l,r; ; &rxwL  
<\nM5-wR  
stack[++top]=0; Tkr~)2,(I!  
stack[++top]=data.length-1; 'oz$uvX  
.joCZKO  
while(top>0){ ;nlJ D#  
int j=stack[top--]; E2l" e?AN~  
int i=stack[top--]; h~QQ-  
y%|Ez  
pivotIndex=(i+j)/2; aP(~l_  
pivot=data[pivotIndex]; \[!{tbK`2  
>07i"a  
SortUtil.swap(data,pivotIndex,j); O0y0'P-rJq  
75>%!mhM  
file://partition Y"ta`+ VJ  
l=i-1; / 1TK+E$  
r=j; Dj= {%  
do{ )4o8SF7lz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); |`yU \  
SortUtil.swap(data,l,r); uv5NqL&  
} q'fOlq  
while(l SortUtil.swap(data,l,r); o>*`wv  
SortUtil.swap(data,l,j); %cs" PS  
(4z_2a(Dl,  
if((l-i)>THRESHOLD){ =f@71D1  
stack[++top]=i; yfwR``F  
stack[++top]=l-1; wo62R&ac  
} ZK ?V{X{";  
if((j-l)>THRESHOLD){ |5(CzXR]  
stack[++top]=l+1; Lww&[|k.  
stack[++top]=j; l`75BR  
} }2Ge??!  
DI/d(oFv`  
} t .&JPTK-H  
file://new InsertSort().sort(data); <=!t!_  
insertSort(data); EqHToD I3  
} Ag3+z+uS  
/** W rT_7  
* @param data alxIc.[  
*/ '"q+[zwv  
private void insertSort(int[] data) { Li8/GoJW-T  
int temp; f x:vhEX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U4Zx1ieCKH  
} HI1|~hOb'  
} MF$Dx| Tcj  
} 'oGMr=gp<&  
a^G>|+8  
} .`*(#9(M9  
s o: o b}  
归并排序: }.u[';q ]S  
gdAd7 T  
package org.rut.util.algorithm.support; /_JR7BB^X,  
jn]l!nm  
import org.rut.util.algorithm.SortUtil; WCaMPz  
U e-AF#  
/** FYNUap,A  
* @author treeroot >;G7ty[RX7  
* @since 2006-2-2 z$Z%us>io  
* @version 1.0 LvGo$f/9  
*/ R {-M%n4w  
public class MergeSort implements SortUtil.Sort{ K7$Q .  
p]e.E`'S  
/* (non-Javadoc) hey/#GC*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xhCNiYJ|  
*/ qU&v50n  
public void sort(int[] data) { fyZtwl@6w#  
int[] temp=new int[data.length]; dXWG`G_  
mergeSort(data,temp,0,data.length-1); E-X02A  
} kQ[23  
6."|m+D  
private void mergeSort(int[] data,int[] temp,int l,int r){ u3cg&lEgT  
int mid=(l+r)/2; >7?Lq<H  
if(l==r) return ; 0/fwAp  
mergeSort(data,temp,l,mid); "<L9-vb  
mergeSort(data,temp,mid+1,r); gjJ:s,Fg  
for(int i=l;i<=r;i++){ W;X:U.  
temp=data; EnMc9FN(y  
} u9 *ic~Nh  
int i1=l; G=Xas"|  
int i2=mid+1; yp hd'Pu"  
for(int cur=l;cur<=r;cur++){ JBV 06T_4o  
if(i1==mid+1) G]-\$>5R  
data[cur]=temp[i2++]; .F/l$4CQ  
else if(i2>r) ieOw&  
data[cur]=temp[i1++]; FIJ]`  
else if(temp[i1] data[cur]=temp[i1++]; (h&=N a~  
else ) [)1  
data[cur]=temp[i2++]; SQ/}K8uZ  
} R{B5{~m>W@  
} U~|)=+%O  
:p1_ij]ND  
} 3;//o<  
P=ubCS'  
改进后的归并排序: *EU1`q*  
`y"a>gHC  
package org.rut.util.algorithm.support; vN6)Szim  
S>[&]  
import org.rut.util.algorithm.SortUtil; 7*+tG7I @  
JFRbW Q0  
/** U d+6=Us{  
* @author treeroot U,< ?]h  
* @since 2006-2-2 kCZ'p  
* @version 1.0 Fe2iG-ec  
*/ 8P%Jky&(  
public class ImprovedMergeSort implements SortUtil.Sort { EBmkKiI;  
 L$]Y$yv  
private static final int THRESHOLD = 10; w~AO;X*Ke"  
SR4 mbQ:  
/* j3o?B  
* (non-Javadoc) /p|L.&`U  
* !'bZ|j%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m*AiP]Qu  
*/ ` b)i;m  
public void sort(int[] data) { bz\nCfU  
int[] temp=new int[data.length]; LD;! s  
mergeSort(data,temp,0,data.length-1); 7U)w\A;~  
} g s%[Cv  
C9%A?'`  
private void mergeSort(int[] data, int[] temp, int l, int r) { G Mg|#DV  
int i, j, k; 5N#Sic M  
int mid = (l + r) / 2; (]"`>, ray  
if (l == r) vf!lhV-UG+  
return; YQ-V^e6  
if ((mid - l) >= THRESHOLD) S2V+%Z _J  
mergeSort(data, temp, l, mid); *Fd(  
else ZjgfkZAS  
insertSort(data, l, mid - l + 1); r#mH[|@W~  
if ((r - mid) > THRESHOLD) K &G  
mergeSort(data, temp, mid + 1, r); #!j wn^yq  
else a/~1CrYr  
insertSort(data, mid + 1, r - mid); 2Gc0pBqx  
RbEtNwG@c  
for (i = l; i <= mid; i++) { 7] >z e  
temp = data; P.Qz>c^-C  
} )9 {!=k  
for (j = 1; j <= r - mid; j++) { D' h%.  
temp[r - j + 1] = data[j + mid]; X$< CIZ  
} a;G>56iw  
int a = temp[l]; 70A* !v  
int b = temp[r]; /6'5uP   
for (i = l, j = r, k = l; k <= r; k++) { )4FW~o<i  
if (a < b) { l=>FoJf!*<  
data[k] = temp[i++]; X<:Zx#J?i  
a = temp; 7!g4`@!5M  
} else { V4?]NFK  
data[k] = temp[j--]; U5;Y o+z  
b = temp[j]; LV]F?O[K=  
} p=dM2>  
} %Xl(wvd   
} NHD`c)Q  
t|59/R  
/** 97^)B4  
* @param data E#yG}UWe  
* @param l !h+VbZ  
* @param i #PMi6q~Z  
*/ Gr|102  
private void insertSort(int[] data, int start, int len) { CuYSvW  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9t{Iv({6p  
} ghaO#kI  
} 6M6r&,yRu  
} \x~},!l  
} T:VFyby\w  
|EP=<-|  
堆排序: bSk)GZyH\d  
$G#)D^-5G  
package org.rut.util.algorithm.support; DP &*P/  
~ ll+/w\4  
import org.rut.util.algorithm.SortUtil; ByW,YKMy  
4u]>$?X1_  
/** %H7H0 %qW  
* @author treeroot z?g\w6  
* @since 2006-2-2 $+w-r#,  
* @version 1.0 fsV_>5I6  
*/ *|.-y->  
public class HeapSort implements SortUtil.Sort{ a(K^/BT  
NfXEW-  
/* (non-Javadoc) oedLe9!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e`t-:~'  
*/ KqWt4{\8v`  
public void sort(int[] data) { w4;1 ('  
MaxHeap h=new MaxHeap(); b^&nr[DC  
h.init(data); 2~!+EH  
for(int i=0;i h.remove(); &&|c-mD+*  
System.arraycopy(h.queue,1,data,0,data.length); QR[i9'`<  
} I :o.%5)  
^}<h_T?<_-  
private static class MaxHeap{ *l8:%t\  
t|cTl/i 4  
void init(int[] data){ u\}"l2 r  
this.queue=new int[data.length+1]; Xs$UpQo  
for(int i=0;i queue[++size]=data; 0)9'x)l:  
fixUp(size);  pytF K)U  
} aF:|MTC(~  
} ? VHOh9|AT  
cDLjjK7:   
private int size=0; G>j4b}e  
5c6?$v /  
private int[] queue; ~cW,B}  
hD>cxo  
public int get() { E9v_6d[  
return queue[1]; F@kd[>/[  
} VK]sK e  
s92SN F}g  
public void remove() { 2sahb#e )  
SortUtil.swap(queue,1,size--); .L))EB  
fixDown(1); 9\a;75a  
} W3 2]#M=  
file://fixdown >Ef{e6  
private void fixDown(int k) { vFl06N2  
int j; ~Jx0#+z9V  
while ((j = k << 1) <= size) { P^& =L&U  
if (j < size %26amp;%26amp; queue[j] j++; Eh|v>Yew  
if (queue[k]>queue[j]) file://不用交换 #@K %Mx  
break; 9 az{j 1  
SortUtil.swap(queue,j,k); rCgoU xW`  
k = j; \[W)[mH_  
} yDe#,|-p  
} *BAR`+;U  
private void fixUp(int k) { b&E9xD/;r  
while (k > 1) { NKE,}^C  
int j = k >> 1; N9gbj%+  
if (queue[j]>queue[k]) ynU20g  
break; Gil mJ2<  
SortUtil.swap(queue,j,k); Kz2s{y~?  
k = j; s|o+ Im  
} 4~mmP.c  
} ^Qa!{9o[  
0iTh |K0  
} qfl#ki`,  
`w#p8vR  
} 31k2X81;a  
Tt\G y  
SortUtil: y8CH=U[  
[X\~J &kD  
package org.rut.util.algorithm; jP"l5  
LV!<vakCK  
import org.rut.util.algorithm.support.BubbleSort; HMPb%'U~  
import org.rut.util.algorithm.support.HeapSort; DNy 6Kw  
import org.rut.util.algorithm.support.ImprovedMergeSort; vZ/Bzy@|  
import org.rut.util.algorithm.support.ImprovedQuickSort; a?ux  
import org.rut.util.algorithm.support.InsertSort; >`=<(8bu  
import org.rut.util.algorithm.support.MergeSort; e)A-.SRiO$  
import org.rut.util.algorithm.support.QuickSort; RG V}c#  
import org.rut.util.algorithm.support.SelectionSort; xty)*$C>  
import org.rut.util.algorithm.support.ShellSort; w4(g]9^Q  
I/ V`@*/+  
/** ;FO( mL(  
* @author treeroot N Obw/9JO  
* @since 2006-2-2 DRuG5|{I:  
* @version 1.0 YK6zN>M}E  
*/ XX[CTh?O%  
public class SortUtil { ERz{, >G?  
public final static int INSERT = 1; X>4qL'b:z  
public final static int BUBBLE = 2; hmM2c15T5  
public final static int SELECTION = 3; :~%{  
public final static int SHELL = 4; m9 D' yXZ  
public final static int QUICK = 5; ]c~W$h+F  
public final static int IMPROVED_QUICK = 6; ,AEaW  
public final static int MERGE = 7; Auk#pO#  
public final static int IMPROVED_MERGE = 8; d@e2+3<  
public final static int HEAP = 9; 5!*@gn  
Z[?zaQ$  
public static void sort(int[] data) { 1&#qq*{  
sort(data, IMPROVED_QUICK); 1?,1EYT"  
} -wrVhCd~g]  
private static String[] name={ O 6Mxp -  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Dwg_#GSr  
}; \:D"#s%x  
u;3wg`e  
private static Sort[] impl=new Sort[]{ )0N^rw kW  
new InsertSort(), A#KfG1K>  
new BubbleSort(), W~qVZ(G*U  
new SelectionSort(), \zM3{{mV/  
new ShellSort(), ds;c\x  
new QuickSort(), /YHAU5N/}  
new ImprovedQuickSort(), VL2+"<  
new MergeSort(), ^&Wa? m.  
new ImprovedMergeSort(), O#72h]  
new HeapSort() iTIYq0u|#R  
}; E2u9>m4_J  
1yV+~)by3  
public static String toString(int algorithm){ pUD(5v*0R  
return name[algorithm-1]; f S-PM3  
} iM(Q-%HP_  
r%412 #  
public static void sort(int[] data, int algorithm) { <tT.m[qg  
impl[algorithm-1].sort(data); fF]w[lLDv  
} / lDei}  
@M&qH[tK-A  
public static interface Sort { C q)Cwc[H  
public void sort(int[] data); 4c9 a"v  
} _(:<l Y aY  
6'45c1e   
public static void swap(int[] data, int i, int j) { WO!'("  
int temp = data; iph}!3f  
data = data[j]; 8KMo!p\i  
data[j] = temp; t+Au6/Dx?  
} |*n B2  
} ,Vfjt=6]}  
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