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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。 $O9Nprf  
插入排序: RY3ANEu+  
#Drs=7w  
package org.rut.util.algorithm.support; ,5$V;|  
{/#^v?,  
import org.rut.util.algorithm.SortUtil; 9JYrP6I!_  
/** [@fw9@_'  
* @author treeroot ,:Qy%k}f  
* @since 2006-2-2 Fa:fBs{  
* @version 1.0 (99P9\[p  
*/ |\;oFuCv##  
public class InsertSort implements SortUtil.Sort{ +[C dd{2  
v]SHude{  
/* (non-Javadoc) eM Ym@~4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #RT}-H  
*/ =@q 9,H  
public void sort(int[] data) { q<Gn@xc'  
int temp; e=ZwhRP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J6J[\  
} bL soKe  
} onL&lE  
} . J[2\"W  
t[*;v  
} o8Vtxnkg  
u>SGa @R)  
冒泡排序: ChO?Lm$y  
uTTM%-DMHT  
package org.rut.util.algorithm.support; wTb7 xBI  
Whp;wAz  
import org.rut.util.algorithm.SortUtil; B7BXS*_b  
s3@sX_2  
/** t>.1,'zb  
* @author treeroot [!1z; /  
* @since 2006-2-2 {C3AxK0  
* @version 1.0 q/w<>u  
*/ Ja<pvb  
public class BubbleSort implements SortUtil.Sort{ db#QA#^S  
]k~Vh[[  
/* (non-Javadoc) NsDJ q{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '?7th>pC  
*/ ii&{gC  
public void sort(int[] data) { x dDR/KS  
int temp; ~_<I}!j/B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $.{CA-~%[  
if(data[j] SortUtil.swap(data,j,j-1); f0H 5 )DJf  
} ;sJUTp5\h  
} 7yp7`|,p  
} yZk HBG4  
} e[_W( v  
, Fo7E  
} dJID '2a  
Xvu|ss  
选择排序: y Nb&;E7 H  
 o"J>MAD  
package org.rut.util.algorithm.support; O0OBkIj  
0s)B~  
import org.rut.util.algorithm.SortUtil; i\hH .7G1  
f[v~U<\R  
/** *AX)QKQ@  
* @author treeroot uMOm<kn  
* @since 2006-2-2 %SORs(4  
* @version 1.0 7 +A-S9P)  
*/ AdBF$nn[  
public class SelectionSort implements SortUtil.Sort { kw)@[1U  
wXw pKm  
/* iC- ?F cA  
* (non-Javadoc) 5c6CH k`:  
* gNk x]bm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y^5X>  
*/ obWBX'  
public void sort(int[] data) { dv3+x\`9  
int temp; [ox!MQ+s  
for (int i = 0; i < data.length; i++) { r"#h6lYK&  
int lowIndex = i; 5<Mht6"H  
for (int j = data.length - 1; j > i; j--) { @?ntMh6  
if (data[j] < data[lowIndex]) { Z-[nHSf  
lowIndex = j; s)Sa KE*d  
} +SCUS]  
} 7+] T}4;  
SortUtil.swap(data,i,lowIndex); T3 xr Ua&  
} `< 8Fc`;[  
} Zur7"OkQ  
OdX-.FFl  
} u*_I7.}9  
UJ' +Z6d  
Shell排序: g*$ 0G  
bm1+|gssn  
package org.rut.util.algorithm.support; VU,\OOp  
W}B 4^l  
import org.rut.util.algorithm.SortUtil; [{3WHS.  
<()xO(  
/** $$C5Q;7w!  
* @author treeroot  v|+}>g  
* @since 2006-2-2 VuTH"br6  
* @version 1.0 .&2pZ  
*/ +kCVi  
public class ShellSort implements SortUtil.Sort{  (2vR8  
/_~b~3{u  
/* (non-Javadoc) 6_/oVvd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !ZP1?l30  
*/ H8 yc<  
public void sort(int[] data) { KLBV(`MS  
for(int i=data.length/2;i>2;i/=2){ -,j J{Y~  
for(int j=0;j insertSort(data,j,i); YLk; ^?  
} Mi'Q5m  
} PHRc*G{  
insertSort(data,0,1); X'N 4a  
} Yjz'lWg  
wd*i&ooQ*L  
/** -k\7k2  
* @param data )f#@`lf[<  
* @param j aM'0O![d  
* @param i ,-u | l  
*/ =!NYvwg6;o  
private void insertSort(int[] data, int start, int inc) { [o&Vr\.$  
int temp; A?Jm59{w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b7fP)nb695  
} 'N,3]Soi  
} 2L.UEAt  
} Q6?+#}  
JA7HO |  
} 6 .DJR Y  
.UbmU^y|  
快速排序: vj0`[X   
M"F?'zTkJ  
package org.rut.util.algorithm.support; #f]R:Ix>  
gUDd2T#  
import org.rut.util.algorithm.SortUtil; GV)#>PL  
G\h8j*o  
/** QQ@, v@j5  
* @author treeroot G}i\UXFE  
* @since 2006-2-2 A`u04Lm7  
* @version 1.0 v}dt**l  
*/ THQ W8 V  
public class QuickSort implements SortUtil.Sort{ oMda)5 &  
{B|U8j[  
/* (non-Javadoc) g=; rM8W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j-$aa;  
*/ l1`Zp9I  
public void sort(int[] data) { 6,  ag\  
quickSort(data,0,data.length-1); "%ag^v9  
} L.(T"`-i  
private void quickSort(int[] data,int i,int j){ Y">tfLIL_  
int pivotIndex=(i+j)/2; |w[}\#2  
file://swap R@>R@V>c  
SortUtil.swap(data,pivotIndex,j); ;nj'C1  
~bT0gIc  
int k=partition(data,i-1,j,data[j]); [$?S9)Xd  
SortUtil.swap(data,k,j); Kbx(^f12  
if((k-i)>1) quickSort(data,i,k-1); x@.iDP@(  
if((j-k)>1) quickSort(data,k+1,j); qM@][]j:  
DMcvu*A  
} xTD6?X'4  
/** Szi4M&!K  
* @param data f4s[R0l  
* @param i tZ>>aiI3  
* @param j u]E%R&  
* @return WlP@Tm5g/  
*/ jLvI!q   
private int partition(int[] data, int l, int r,int pivot) { LYh5f#  
do{ P;KbS~ SlC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F~a5yW:R=)  
SortUtil.swap(data,l,r); O|,+@qtH  
} Pb} &c  
while(l SortUtil.swap(data,l,r); v)N6ZOj*C  
return l; s5|LD'o!  
} &g,K5at  
L3q)j\ ls  
} bXq,iX  
2 T{PIJg3  
改进后的快速排序: \, n'D  
&\sg~  
package org.rut.util.algorithm.support; F)e*w:D  
"+nURdicO  
import org.rut.util.algorithm.SortUtil; *sJx0<!M}  
F&lc8  
/** #2yOqUO\  
* @author treeroot nIph[Vs-Z  
* @since 2006-2-2 ygpC1nN  
* @version 1.0 d;lp^K M  
*/ tP!sOvQ:  
public class ImprovedQuickSort implements SortUtil.Sort { j K[VEhs  
 aSHZR  
private static int MAX_STACK_SIZE=4096; y#AY+ >  
private static int THRESHOLD=10; &[cL%pP  
/* (non-Javadoc) JPQ02&e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) | nry^zb  
*/ ]CC~Eo-%-  
public void sort(int[] data) { w?M*n<) O  
int[] stack=new int[MAX_STACK_SIZE]; ::H jpM  
@T/C<-/:  
int top=-1; GU&XK7L  
int pivot; U\VwJ2 {i  
int pivotIndex,l,r; cIM5;"gLP  
vp mSzh  
stack[++top]=0; .v1rrH?  
stack[++top]=data.length-1; h:bs/q+-  
WtRy~5A2  
while(top>0){ MW*}+ PCY  
int j=stack[top--]; iXl1S[.l  
int i=stack[top--]; m}uF&|5  
l'16B^  
pivotIndex=(i+j)/2; E=s`$ A  
pivot=data[pivotIndex]; iUI,r*  
DvOg|XUU0  
SortUtil.swap(data,pivotIndex,j); njUM>E,'  
{z F  
file://partition 8-?n<h%8E  
l=i-1; dJ24J+9}]j  
r=j; 3;:xEPb._6  
do{ 4zf#zJw  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H8\{ GGg  
SortUtil.swap(data,l,r); ) ]~HjA;  
} %< j=&  
while(l SortUtil.swap(data,l,r); _%1.D0<~-E  
SortUtil.swap(data,l,j); 38'H-]8q"  
APc@1="#J  
if((l-i)>THRESHOLD){ *DNH_8m  
stack[++top]=i; ,+'f unH  
stack[++top]=l-1; ZN4&:9M  
} ae!_u \$  
if((j-l)>THRESHOLD){ }f-rWe{gs>  
stack[++top]=l+1; IL%&*B  
stack[++top]=j; r1?LKoJOn  
} A{+ZXu}  
! h4So4p  
} ^Ws~h\{%  
file://new InsertSort().sort(data); um8ZhXq  
insertSort(data); J7cqnj  
} D3^v[>E2  
/** T >-F~?7Sv  
* @param data xq~=T:>/A  
*/ &H+<uYV  
private void insertSort(int[] data) { 5~[ Fh2+  
int temp; 7L<oWAq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @~N#)L^  
} "V:UQ<a\  
} R6:N`S]&d[  
} ihYf WG|  
dO8Z {wfs  
} 6 w ]]KA  
/?6y2t  
归并排序: 1gm{.*G  
V&}Z# 9Dx  
package org.rut.util.algorithm.support; X@D3  
 E;|\?>  
import org.rut.util.algorithm.SortUtil; JGdBpj:  
9a4RW}S<  
/** 92tb`'  
* @author treeroot [R:O'AP}@}  
* @since 2006-2-2 ix/uV)]k`  
* @version 1.0 _|Dt6  
*/ B"B  
public class MergeSort implements SortUtil.Sort{ oNh .Zgg  
R1m18GHQ  
/* (non-Javadoc) c`jTdVD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :8QG$Ua1  
*/ g,W#3b6>j  
public void sort(int[] data) { :- 5Mn3*  
int[] temp=new int[data.length]; d8r+UP@#  
mergeSort(data,temp,0,data.length-1); \Q)~'P3  
} 0yZw`|Zh[  
34l=U?  
private void mergeSort(int[] data,int[] temp,int l,int r){  9q5[W=|  
int mid=(l+r)/2; T(}da**X  
if(l==r) return ; kN) pi "  
mergeSort(data,temp,l,mid); %FRkvqV*  
mergeSort(data,temp,mid+1,r); dW5z0VuB$/  
for(int i=l;i<=r;i++){ i)p__Is  
temp=data; "l@~WE  
} 0y1t%C075  
int i1=l; vaU7tJ:  
int i2=mid+1; +I~?8*  
for(int cur=l;cur<=r;cur++){ rLXn35O  
if(i1==mid+1) u}h'v&"e,  
data[cur]=temp[i2++]; x-QP+M`Pu  
else if(i2>r) >L(F{c:  
data[cur]=temp[i1++]; g ` {0I[  
else if(temp[i1] data[cur]=temp[i1++]; }9kq?  
else 97 g-*K  
data[cur]=temp[i2++]; }hf*Jw  
} =0-qBodbl  
} H9Z3.F(2  
KWYG\#S0]  
} ^49moC-  
g[n8N{s  
改进后的归并排序: Lr~K3nb  
?t"PawBWE  
package org.rut.util.algorithm.support; ditzl(L   
x?F{=\z/o  
import org.rut.util.algorithm.SortUtil; 0CR;t`M@  
;|%r!!#-t  
/** I"!{HnSG`  
* @author treeroot  (M=Br  
* @since 2006-2-2 uXC?fMWp.  
* @version 1.0 O*PHo_&G  
*/ ) jvkwC  
public class ImprovedMergeSort implements SortUtil.Sort { RAxz+1JT  
-I*A  `M  
private static final int THRESHOLD = 10; kr/h^e  
s [!SG`&  
/* j AE0$u~.  
* (non-Javadoc) W7 E-j+2  
* z~_\onC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |)_R bqZ  
*/ %xruPWT:k  
public void sort(int[] data) { &Y>u2OZ  
int[] temp=new int[data.length]; +OmSR*fA0  
mergeSort(data,temp,0,data.length-1); ig,|3(  
} izw}25SW  
 R pbl)  
private void mergeSort(int[] data, int[] temp, int l, int r) { R;yAqr29  
int i, j, k; ?x0yiV~dL  
int mid = (l + r) / 2; 2uTa}{/%  
if (l == r) ww2Qa-K  
return; bi[l,  
if ((mid - l) >= THRESHOLD) q  ha1b$  
mergeSort(data, temp, l, mid); K_aN7?#.v`  
else ._3NqE;  
insertSort(data, l, mid - l + 1); .R'i=D`Pz  
if ((r - mid) > THRESHOLD) i=D,T[|>a  
mergeSort(data, temp, mid + 1, r); ^&.?kJM  
else -T8 gV1*(<  
insertSort(data, mid + 1, r - mid); 1sJN^BvuG  
lN'/Z&62  
for (i = l; i <= mid; i++) { ""d>f4,S  
temp = data; a3 x~B=E  
} a*hThr+$M  
for (j = 1; j <= r - mid; j++) { X A|`wAGP  
temp[r - j + 1] = data[j + mid]; z,)sS<t(  
} &^H "T6  
int a = temp[l]; h~@+M5r,  
int b = temp[r]; d/&|%Z r  
for (i = l, j = r, k = l; k <= r; k++) { Wd AGZUp  
if (a < b) { SS~Q;9o  
data[k] = temp[i++]; gT OMD  
a = temp; lo:~~l  
} else { c5R{Sl  
data[k] = temp[j--]; yh:,[<q  
b = temp[j]; cZ>W8{G  
} L'Zud,JKg  
} 3c3Z"JV  
} `[CJtd2\  
clw91yrQn  
/** 'qJ-eQ7e  
* @param data 02[II_< 1  
* @param l R!,)?j;  
* @param i gxM8IQ  
*/ "~<~b2Y"5  
private void insertSort(int[] data, int start, int len) { jVIpbG4 4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~S6{VK.  
} njMy&$6a##  
} ~P_kr'o  
} ]Qr8wa>Z  
} ;l()3;  
LDeVNVM  
堆排序: GJs[m~`8#  
c!Vc_@V,  
package org.rut.util.algorithm.support; J36@Pf]h  
S(i(1Hs.  
import org.rut.util.algorithm.SortUtil; b<AE}UK  
fm>K4\2  
/** ]F;]<_  
* @author treeroot 2hJ3m+N^  
* @since 2006-2-2 ,~xU>L^  
* @version 1.0 "}p?pF<'0  
*/ --`LP[ll  
public class HeapSort implements SortUtil.Sort{ #\BI-zt  
o(/ ia3  
/* (non-Javadoc) dY<#a,eS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; ZV^e  
*/ 5R`6zhf  
public void sort(int[] data) { `YNC_r#tG  
MaxHeap h=new MaxHeap(); %E"/]!}3  
h.init(data); "NH+qQhs  
for(int i=0;i h.remove(); 7RE6y(V1  
System.arraycopy(h.queue,1,data,0,data.length); B:4qW[U#  
} ]a#]3(o]}  
FM"BTA:C  
private static class MaxHeap{ ~#_$?_/(  
lMez!qx,=  
void init(int[] data){ N>%KV8>{L  
this.queue=new int[data.length+1]; T1HiHvJ  
for(int i=0;i queue[++size]=data; Xl6ZV,1=n7  
fixUp(size); 0DIM]PS  
} kZ-~ ;fBe  
} ws>Iyw.u  
}#>d2 =T$  
private int size=0; NoZ4['NI\  
:TYzzl43  
private int[] queue; 8;\tP29  
 jnzz~:  
public int get() { KH>sCEt  
return queue[1]; <S@mQJS!y  
} vC<kpf!  
]#q7}Sd  
public void remove() { )^S^s >3  
SortUtil.swap(queue,1,size--); :YXQ9/iRr  
fixDown(1); |uwteG5?$s  
} TL{pc=eBo  
file://fixdown .N5R?fmD  
private void fixDown(int k) { rbun5&RCyW  
int j; gc7:Rb^E5t  
while ((j = k << 1) <= size) { Rn(F#tI  
if (j < size %26amp;%26amp; queue[j] j++; iH}rI'U.  
if (queue[k]>queue[j]) file://不用交换 Po!JgcJ#\  
break; 'Oy5G7^R  
SortUtil.swap(queue,j,k); {R!TUQ5  
k = j; 8tRh V2  
} +Y9D!=_lj  
} -_*XhD  
private void fixUp(int k) { I u~aTgHX%  
while (k > 1) { Doc'7P  
int j = k >> 1; 'A(-MTd%  
if (queue[j]>queue[k]) \ Q8q9|g?]  
break; DD6`k*RIk.  
SortUtil.swap(queue,j,k); obc^<ZD]  
k = j; VueQP|   
} @1-GPmj-  
} m *bKy;'8  
xKLcd+hCZ  
} i =fOdp  
-5,y 1_M  
} ="w8U'  
(VI* c!N  
SortUtil: }%ZG> LG5J  
0/00 W6r0  
package org.rut.util.algorithm; (9 z.IH7}k  
UNcJ=   
import org.rut.util.algorithm.support.BubbleSort; RQ)!KlY  
import org.rut.util.algorithm.support.HeapSort; IfmIX+t?  
import org.rut.util.algorithm.support.ImprovedMergeSort; O{cGk: y  
import org.rut.util.algorithm.support.ImprovedQuickSort; q{Ta?|x#  
import org.rut.util.algorithm.support.InsertSort; :f !=_^}  
import org.rut.util.algorithm.support.MergeSort; @uM3iO7&  
import org.rut.util.algorithm.support.QuickSort; k#:@fH4{PA  
import org.rut.util.algorithm.support.SelectionSort; Hs`#{W{.  
import org.rut.util.algorithm.support.ShellSort; iMeRQYW  
9s6>9hMb)  
/** a2=uM}Hsp  
* @author treeroot K-Dk2(x  
* @since 2006-2-2 sa gBmA~  
* @version 1.0 # /,2MQ  
*/ # pjyhH@  
public class SortUtil { g9weJ6@}M  
public final static int INSERT = 1; + yP[(b/  
public final static int BUBBLE = 2; 8&A|)ur4  
public final static int SELECTION = 3; 3|'#n[3  
public final static int SHELL = 4; JXRf4QmG  
public final static int QUICK = 5; (zw=qbS&  
public final static int IMPROVED_QUICK = 6; wI]R+.  
public final static int MERGE = 7; k E#_Pc  
public final static int IMPROVED_MERGE = 8; L[D/#0qp  
public final static int HEAP = 9; Rr;LV<q+  
vD)A)  
public static void sort(int[] data) { T.w}6? 2  
sort(data, IMPROVED_QUICK); $L&9x3+?Kg  
} B[/['sD  
private static String[] name={ LY88;*:S  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" XAULD]Q  
}; lF}$`6  
i h$@:^\  
private static Sort[] impl=new Sort[]{ vPl6Das r  
new InsertSort(), NtA|#"^  
new BubbleSort(), ZG \ I1  
new SelectionSort(), Z>w^j.(  
new ShellSort(), vrm{Ql&  
new QuickSort(), .1z$ A  
new ImprovedQuickSort(), J.e8UQ@=5  
new MergeSort(), D@r n@N  
new ImprovedMergeSort(), ! N"L`RWD  
new HeapSort() g"dZB2`C  
}; \l=KWa3Q  
Q1ABnacR  
public static String toString(int algorithm){ }2BH_  2  
return name[algorithm-1]; [>M*_1F  
} [,o5QH\Etq  
v1X&p\[d  
public static void sort(int[] data, int algorithm) { r@ T-Hi  
impl[algorithm-1].sort(data);  IB.'4B7  
} ofPF}  
Nvx)H(8F  
public static interface Sort { y5AXL5  
public void sort(int[] data); +%le/Pg@  
} X~)V)'R  
\A3>c|  
public static void swap(int[] data, int i, int j) { x(3 I?#kE  
int temp = data; x,w`OMQ}c  
data = data[j]; {Z?$Co^R  
data[j] = temp; 2NA rE@  
} :9x084ESR)  
} `3sy>GU?  
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