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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。 JP4DV=}L  
插入排序:  +vkmS  
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package org.rut.util.algorithm.support; o*Qa*<n  
m(8Tup|  
import org.rut.util.algorithm.SortUtil; BwT[SI<Sg  
/** nJe}U#  
* @author treeroot lp}S'^ y  
* @since 2006-2-2 F` ybe\  
* @version 1.0 CyIlv0fd}  
*/ H*0Y_H=  
public class InsertSort implements SortUtil.Sort{ D [+LU(  
`#$}P;W  
/* (non-Javadoc) 9[/0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L('1NN 2  
*/ m?(8T|i  
public void sort(int[] data) { 0j@mzd2  
int temp; &Ym):pc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WJq>%<#  
} !Ubm 586!  
} M5no4P<  
} jz8u'y[n7  
vh\i ^  
} p{Q6g>?[  
F;Q,cg M  
冒泡排序: |O(>{GH  
:9QU\{2  
package org.rut.util.algorithm.support; qA[lL(  
Ze V@ X  
import org.rut.util.algorithm.SortUtil; `Na()r$T  
G!j9D  
/** dWd%>9 }  
* @author treeroot `bQ_eRw}  
* @since 2006-2-2 u[)X="-e#  
* @version 1.0 58Ibje  
*/ {N~mDUoJ|  
public class BubbleSort implements SortUtil.Sort{ (1z"=NCp  
RQ E]=N  
/* (non-Javadoc) Aits<0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^(JrOh'  
*/ ^{"i eVn  
public void sort(int[] data) { hwGK),?"+  
int temp; %* 0GEfl/  
for(int i=0;i for(int j=data.length-1;j>i;j--){ D|OGlP  
if(data[j] SortUtil.swap(data,j,j-1); a{ST4d'T  
} 6Rfv3  
} 0~U0s3  
} 7RT{RE  
}  ]~;*9`:  
!l*A3qA  
} -f|/#1  
Fu.aV876\f  
选择排序: e]1=&:eX#d  
yepRJ%mp  
package org.rut.util.algorithm.support; VV Q~;{L  
) k/&,J3  
import org.rut.util.algorithm.SortUtil; wKpGJ& {  
.6gx|V+  
/** !EIH"`>!  
* @author treeroot (GRW(Zd4  
* @since 2006-2-2 0'd@8]|H  
* @version 1.0 g/C 7wc  
*/ eY 3:Nl^  
public class SelectionSort implements SortUtil.Sort { hp)>Nzdx  
!5dn7Wuj  
/* DG;u_6;JR  
* (non-Javadoc) 9we];RYK  
* -=lm`X<:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4&NB xe  
*/ "5eD >!  
public void sort(int[] data) { cP tDIc,  
int temp; =+X*$'<J  
for (int i = 0; i < data.length; i++) { |6d:k~p  
int lowIndex = i; eSoX|2g  
for (int j = data.length - 1; j > i; j--) { P{dR pH|  
if (data[j] < data[lowIndex]) { HVvm3qu4  
lowIndex = j; .g/!u(iy  
} NATi)A"TZ  
} ^(&2  
SortUtil.swap(data,i,lowIndex); iY>x x~V  
} >> cW0I/`  
} 8TYh&n=r  
c+{XP&g8_J  
} w'}s'gGE  
,;6%s>Cvd(  
Shell排序: ZS:[ZehF  
Yy 4Was#  
package org.rut.util.algorithm.support; =x w:@(]{  
|g7)A?2J~  
import org.rut.util.algorithm.SortUtil; ?Ho$fGz  
QqL?? p-S>  
/** 36'J9h\  
* @author treeroot ruqE]Hx9(  
* @since 2006-2-2 QPVr:+\B{  
* @version 1.0 AkjoD7.*  
*/ VFV8ik)  
public class ShellSort implements SortUtil.Sort{ F4(;O7j9  
.~'q yD2V  
/* (non-Javadoc) iP7KM*ks  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Iy5W/QK6  
*/ pnz@;+f  
public void sort(int[] data) { #euOq  
for(int i=data.length/2;i>2;i/=2){ ,,XHw;{  
for(int j=0;j insertSort(data,j,i); ve#[LBOC8  
} 0T3r#zQ  
} >y+j!)\  
insertSort(data,0,1); z"5e3w  
} L%9yFg%u  
@TKQ_7BcB  
/** jbOzbxR?  
* @param data #tPy0Q H  
* @param j AO$aWyI  
* @param i xT9+l1_  
*/ #l2WRw_t  
private void insertSort(int[] data, int start, int inc) { VAxk?P0j6  
int temp; fZd~},X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iEFS>kL8e  
} lSId<v?C>  
} 8/34{2048  
} }=3W(1cu-  
s|!b: Ms`  
} A&'HlI% J  
Qzk/oH s  
快速排序: ;+qPV7Z  
Q!%CU8!`&  
package org.rut.util.algorithm.support; 7L:R&W6  
zGFW?|o<  
import org.rut.util.algorithm.SortUtil; S4~;bsSx  
~w%Z Bp  
/** 28+ Sz>SP  
* @author treeroot ]*;+ U6/?  
* @since 2006-2-2 48%a${Nvvj  
* @version 1.0 TA Yt:  
*/ =09j1:''<d  
public class QuickSort implements SortUtil.Sort{ s.dn~|a  
?Ve5}N  
/* (non-Javadoc) !"J*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qXW2a'~  
*/ TAJ9Y<  
public void sort(int[] data) { 4_I,wG@  
quickSort(data,0,data.length-1); -+I! (?  
} k0D&F;a%  
private void quickSort(int[] data,int i,int j){ XY QUU0R  
int pivotIndex=(i+j)/2; qV$',U*+T  
file://swap z06pX$Q.<  
SortUtil.swap(data,pivotIndex,j); !%M-w0vC9  
v <Ze$^ e&  
int k=partition(data,i-1,j,data[j]); =yNHJHRA#  
SortUtil.swap(data,k,j); w)8@Tu:Q  
if((k-i)>1) quickSort(data,i,k-1); Q}.y"|^  
if((j-k)>1) quickSort(data,k+1,j); gZ!(&u  
zB]T5]  
} Tx_(^K  
/** |95/'a*  
* @param data z=Vvb  
* @param i $-AvH( @  
* @param j =nL*/  
* @return m[7:p{  
*/ ft6^s(t  
private int partition(int[] data, int l, int r,int pivot) { w+$gY?%  
do{ RK3/!C`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?Ru`ma\;  
SortUtil.swap(data,l,r); |8`;55G  
} I !<v$  
while(l SortUtil.swap(data,l,r); CGe'z  
return l; )?bb]hZg?O  
} 5)o IPHXw  
hCvn(f  
} v(7A=/W_  
k"7eHSy,  
改进后的快速排序: dGteYt_F  
k51s*U6=  
package org.rut.util.algorithm.support; 7h0'R k  
PC_4#6^5  
import org.rut.util.algorithm.SortUtil; 2,;t%GB  
uWInx6p  
/** r"[T9  
* @author treeroot C|J1x4sb@  
* @since 2006-2-2 ` j<tI6[e  
* @version 1.0 wqOhJYc  
*/ F`Y<(]+   
public class ImprovedQuickSort implements SortUtil.Sort { ZtLn*M  
[;f"',)y,  
private static int MAX_STACK_SIZE=4096; .KsvRx  
private static int THRESHOLD=10; -N(MEzAE  
/* (non-Javadoc)  :Y3?,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r?I(me,  
*/ iP%=Wo.  
public void sort(int[] data) { Pvw%,=41O  
int[] stack=new int[MAX_STACK_SIZE]; \veL5  
dZgfls  
int top=-1; 8W>l(w9M  
int pivot; UVJ(iNK"  
int pivotIndex,l,r; /6c10}f  
Z :+#3.4$3  
stack[++top]=0; _64@zdL+  
stack[++top]=data.length-1; 6I#DlAU@v  
i=oa"^c4  
while(top>0){ ACYn87tq  
int j=stack[top--]; TMCA?r%Y\  
int i=stack[top--]; AZy2Pu56  
8Q -F  
pivotIndex=(i+j)/2; l7!)#^`2_  
pivot=data[pivotIndex]; )x&@j4,  
%Ab_PAw  
SortUtil.swap(data,pivotIndex,j); QZox3LM1&.  
n^02@Aw  
file://partition lh_zZ!)g  
l=i-1; np^<HfYV  
r=j; # :w2Hf6Q  
do{ F5MPy[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9nS!  
SortUtil.swap(data,l,r); 1<`7MN  
} CZRo{2!?U  
while(l SortUtil.swap(data,l,r); a3O_#l-Z  
SortUtil.swap(data,l,j); ><R.z( 4%  
-z$2pXT ^  
if((l-i)>THRESHOLD){ >?eTbtP  
stack[++top]=i; So.P @CCd  
stack[++top]=l-1;  :$c:3~  
} b|o!&9Yyr  
if((j-l)>THRESHOLD){  r;X0 B  
stack[++top]=l+1; ~C7<a48x  
stack[++top]=j; 'A!/pUML  
} zf>^2t*\  
xcvr D  
} 0DVZRB  
file://new InsertSort().sort(data); R 0HVLQI  
insertSort(data); Y*cJ4hQ  
} -Dxhq& }Y  
/** /NX7Vev  
* @param data )z235}P  
*/ 'F"Y?y:!  
private void insertSort(int[] data) { q,+kPhHEgy  
int temp; /:{_|P\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7Ljj#!`lUp  
} )1nCw  
} =Z .V+4+  
} apD=>O  
+VLe'|  
} J2< QAX  
K}E7|gdG  
归并排序: DwY<qNWT  
H4'DL'83  
package org.rut.util.algorithm.support; ,' r L'Ys  
tK|9qs<%  
import org.rut.util.algorithm.SortUtil; k3>ur>aW  
YG 5Z8@kH  
/** IgVo%)n  
* @author treeroot q X%vRf0  
* @since 2006-2-2 V l~Y  
* @version 1.0 cP@F #!2  
*/ ezr\T  
public class MergeSort implements SortUtil.Sort{ n^pZXb;Y  
2@R8P~^W  
/* (non-Javadoc) Ur([L&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;j>Vt?:Pw  
*/ De nt?  
public void sort(int[] data) { V(2j*2R!  
int[] temp=new int[data.length]; \YlF>{LVe  
mergeSort(data,temp,0,data.length-1); )0U3w#,JQ  
} w~$c= JO#  
Uc&6=5~Ys\  
private void mergeSort(int[] data,int[] temp,int l,int r){ lQdnL.w$.4  
int mid=(l+r)/2; Dpdn%8+Z  
if(l==r) return ; UROj9CO v  
mergeSort(data,temp,l,mid); i'Y'HI  
mergeSort(data,temp,mid+1,r); ,zN3? /7  
for(int i=l;i<=r;i++){ [EmOA.6  
temp=data; ;;YcuzQI3  
} NDRW  
int i1=l; xz"Z3B  
int i2=mid+1; nrTv=*tDj  
for(int cur=l;cur<=r;cur++){ .lvI8Jf~X  
if(i1==mid+1) Z(Eke  
data[cur]=temp[i2++]; %Ui{=920  
else if(i2>r) coF T2Pq  
data[cur]=temp[i1++]; Hz]4AS  
else if(temp[i1] data[cur]=temp[i1++]; a IpPL8a  
else [;?"R-V"z  
data[cur]=temp[i2++]; llHc=&y#  
} ,pyQP^u-  
} C#Hcv*D  
CJ9cCtA  
} v}F4R $  
GSz @rDGY  
改进后的归并排序: (]3ERPn#y  
y@o9~?M  
package org.rut.util.algorithm.support; oe(9mYWKa6  
Yzj%{fkh  
import org.rut.util.algorithm.SortUtil; %bIsrQ~B  
Kajkw>z  
/** 0).fBBNG  
* @author treeroot "_K}rI6(t  
* @since 2006-2-2 [ 8F \;  
* @version 1.0 \npz .g^c_  
*/ xClRO,-  
public class ImprovedMergeSort implements SortUtil.Sort { ";PG%_(  
CN.6E<9'kK  
private static final int THRESHOLD = 10; \f(Y:}9  
t|;%DA)fjw  
/*  9t{|_G  
* (non-Javadoc) XnBm`vk?V!  
* HUj+-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C _8j:Z&  
*/ \s=QiPK  
public void sort(int[] data) { 1^aykrnQ>  
int[] temp=new int[data.length]; UhsO\9}qH  
mergeSort(data,temp,0,data.length-1); C/F@ ]_y  
} "@.Z#d|Y  
&&;ex9  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6 -]>]Hr-  
int i, j, k; l <:`~\#  
int mid = (l + r) / 2; x.I][(}  
if (l == r) oG!6}5  
return; %VzYqj_P"  
if ((mid - l) >= THRESHOLD) Js/N()X  
mergeSort(data, temp, l, mid); Ll,I-BQ 9  
else z~F37]W3[  
insertSort(data, l, mid - l + 1); Y|mW.  
if ((r - mid) > THRESHOLD) s4 (Wp3>3i  
mergeSort(data, temp, mid + 1, r); M9gOoYf,~  
else 9*' &5F=  
insertSort(data, mid + 1, r - mid); {`a(Tl8V  
$nj\\,(g  
for (i = l; i <= mid; i++) { Q\H_t)-  
temp = data; ]*0(-@  
} )&>L !,z  
for (j = 1; j <= r - mid; j++) { NN^QUB  
temp[r - j + 1] = data[j + mid];  Q.yb4  
} mxgqS=`  
int a = temp[l]; nh<Z1tMU  
int b = temp[r]; GjEqU;XBi  
for (i = l, j = r, k = l; k <= r; k++) { C ck#Y  
if (a < b) { Hj2<ZL  
data[k] = temp[i++]; @a0Q0M  
a = temp; sMP:sCRC  
} else { 0 <g{ V  
data[k] = temp[j--]; wZQ)jo7*g  
b = temp[j]; ^+/kr/  
} OZ(dpV9.S  
} : ]II-$/8  
} z]@6fM[  
q.V-LXM  
/** w/m:{cHk  
* @param data \?lz&<  
* @param l @S3f:s0~D  
* @param i 1[PMDS_X  
*/ c0rk<V%5+  
private void insertSort(int[] data, int start, int len) { &c%Y<1e`%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :dnJY%/q  
} 'i|rj W(  
} Qa4MZj ;$K  
} 3z8C  
} lpm JLH.F  
8%:]W^  
堆排序: 'Jj=RAV`  
X#p Wyo~  
package org.rut.util.algorithm.support; wCKj7y[  
iK;opA"  
import org.rut.util.algorithm.SortUtil; (z7+|JE.  
v"O5u%P  
/** NXk!qGV2  
* @author treeroot T.:+3:8|F  
* @since 2006-2-2 ajH"Jy3A  
* @version 1.0 UKBJ_r  
*/ 7 hw .B'7  
public class HeapSort implements SortUtil.Sort{ EbQa?  
EqB)sK/3  
/* (non-Javadoc)  zGlZ!t:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c j$6  
*/ tkKJh !Q7  
public void sort(int[] data) { m`A% p  
MaxHeap h=new MaxHeap(); rZ03x\2  
h.init(data); KY9n2u&4  
for(int i=0;i h.remove(); 2N [=  
System.arraycopy(h.queue,1,data,0,data.length); $jzFc!rs  
} dJk9@u  
 %Y nmuZ  
private static class MaxHeap{ $lwz-^1t.  
l.=p8-/$'7  
void init(int[] data){ ^+|De}`u  
this.queue=new int[data.length+1]; k;^ :  
for(int i=0;i queue[++size]=data; /Lf6WMit  
fixUp(size); 2DDsWJ;  
} 1Y j~fb(  
} t0E51Ic@  
bn9;7`>.  
private int size=0; \IM4Z|NN"  
FY3IUG  
private int[] queue; ^s:y/Kd  
YA]5~ ZE\  
public int get() { iw?I  
return queue[1]; =r. >N\  
} I/J7rkf  
3`.P'Fh(k  
public void remove() { p s|)cW3`  
SortUtil.swap(queue,1,size--); IVxWxM*N<  
fixDown(1); _.)eL3OF  
} &:#h$`4  
file://fixdown umEVy*hc  
private void fixDown(int k) { W7No ls{  
int j; ed!>)Cb  
while ((j = k << 1) <= size) { @* ust>7  
if (j < size %26amp;%26amp; queue[j] j++; i b6^x:HGU  
if (queue[k]>queue[j]) file://不用交换 tOl e>]  
break; NZLAk~R;0  
SortUtil.swap(queue,j,k); io2)1cE&f  
k = j; 0ezYdS~o  
} P\2M[Gu(Q  
} HfNDD| Zz  
private void fixUp(int k) { !0VfbY9C  
while (k > 1) { k=ytuV\  
int j = k >> 1; E>jh"|f:{  
if (queue[j]>queue[k]) "f.Z}AbP  
break; tfO#vw,@  
SortUtil.swap(queue,j,k); m:QG}{<.h  
k = j; A#wEuX=[  
} z`@^5_  
} 7*o*6,/  
/u<nLj1  
} ~#K@ADYr  
Dh| w^Q  
} g2cVZ!GIj  
JAc_kl{4O  
SortUtil: p zw8T  
?i\;:<e4  
package org.rut.util.algorithm; 4vnUN  
UPU+ver  
import org.rut.util.algorithm.support.BubbleSort; c~}l8M %  
import org.rut.util.algorithm.support.HeapSort; kh$_!BT  
import org.rut.util.algorithm.support.ImprovedMergeSort; . RVVWqW  
import org.rut.util.algorithm.support.ImprovedQuickSort; lJ;J~>  
import org.rut.util.algorithm.support.InsertSort; w&h 2y4  
import org.rut.util.algorithm.support.MergeSort; {^)70Vz>PE  
import org.rut.util.algorithm.support.QuickSort; uLeRZSC  
import org.rut.util.algorithm.support.SelectionSort; F t&+vS  
import org.rut.util.algorithm.support.ShellSort; l(W[_ D  
@r^!{  
/** 5X.ebd;PT  
* @author treeroot RSfM]w}Hq#  
* @since 2006-2-2 B0}~G(t(  
* @version 1.0 >T3H qYX5W  
*/ rt7<Q47QE  
public class SortUtil { B/f0P(7  
public final static int INSERT = 1; 83~ i:+;  
public final static int BUBBLE = 2; ZM#=`k9  
public final static int SELECTION = 3; klOp ^w  
public final static int SHELL = 4; j|fd-<ng  
public final static int QUICK = 5; AnsjmR:Jv  
public final static int IMPROVED_QUICK = 6; c{#yx_)V&  
public final static int MERGE = 7; km5~Gc}  
public final static int IMPROVED_MERGE = 8; f'(l&/4z{  
public final static int HEAP = 9; `g ''rfk}  
"@3@/I  
public static void sort(int[] data) { u^W2UE\  
sort(data, IMPROVED_QUICK); k_|^kdWJ  
} /TQ}} YVw  
private static String[] name={ W`rNBfG>  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" PaB!,<A  
}; zJlQ_U-!  
kYwb -;  
private static Sort[] impl=new Sort[]{ '(+<UpG_Q}  
new InsertSort(), -<_$m6x"A  
new BubbleSort(), >RI>J.~  
new SelectionSort(), 34|a\b}  
new ShellSort(), #Doq P:  
new QuickSort(), K ?$#nt p  
new ImprovedQuickSort(), cS .i  
new MergeSort(), a T  l c  
new ImprovedMergeSort(), \(UKd v  
new HeapSort() R>@uY( >dJ  
}; ~}ml*<z@  
pI[ZBoR~  
public static String toString(int algorithm){ q~K(]Ya/  
return name[algorithm-1]; T5Eseesp  
} X~.f7Ao[  
._:nw=Y0<}  
public static void sort(int[] data, int algorithm) { JWP*>\P  
impl[algorithm-1].sort(data); [&S}dQ"  
} =4!nFi  
>"3>s%  
public static interface Sort { >n5:1.g  
public void sort(int[] data); XkKC!  
} 0pe3L   
eEc4bVQa  
public static void swap(int[] data, int i, int j) { 96Wp!]*  
int temp = data; ,FQdtNMap  
data = data[j]; cvsz%:Vs  
data[j] = temp; Pj#'}ru!  
} BG2)v.CU  
} JHn*->m  
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