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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。 ?KE$r~dn  
插入排序: `>lzlEhKV  
,0N94pKy  
package org.rut.util.algorithm.support; +T{'V^  
#{J,kcxS  
import org.rut.util.algorithm.SortUtil; 5|8^9Oe5  
/** 1wj:aD?g  
* @author treeroot I f-_?wZe  
* @since 2006-2-2 1zxq^BI  
* @version 1.0 0CExY9@Wq  
*/ 1B=>_3_  
public class InsertSort implements SortUtil.Sort{ ,*svtw:2')  
!Ng=Yk>3  
/* (non-Javadoc) 8wZf ]_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PWr(*ZP>hI  
*/ =8{WZCW5  
public void sort(int[] data) { wBSQ:f]g  
int temp; [bz T& o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3_$w| ET  
} jXg  
} BJ}D%nm}  
} IE2"rQT  
 .) tSg  
} ]T:;Vo  
f9u^R=Ff[  
冒泡排序: J^#:qk  
]< l6s  
package org.rut.util.algorithm.support; ,m3e?j@;r  
PmpNAVE'  
import org.rut.util.algorithm.SortUtil; K2)!h.W  
iBg3mc@OO  
/** b7`D|7D  
* @author treeroot u{<"NR h  
* @since 2006-2-2 |*5 =_vF  
* @version 1.0 G3i !PwW  
*/ =+:{P?*}  
public class BubbleSort implements SortUtil.Sort{ =='Td[  
J:*-gwv9*m  
/* (non-Javadoc) }T2xXbU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D;}xr_  
*/ pKUP2m`MW  
public void sort(int[] data) { |SZo' 6  
int temp; 2}6%qgnT-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ eV^d6T$  
if(data[j] SortUtil.swap(data,j,j-1); s ^Nw%KAv  
} - YqYcer  
} b}^S.;vNj  
} LpbsYl  
} @$^bMIj@W  
DTRJ/ @t  
} o G*5f  
G3P &{.v  
选择排序: 6fo3:P*O  
"I6P=]|b  
package org.rut.util.algorithm.support; /*FH:T<V  
uA t V".  
import org.rut.util.algorithm.SortUtil; d[^KL;b?6  
6RO(]5wX  
/** C$h<Wt=<  
* @author treeroot yOU(2"8p  
* @since 2006-2-2 ?t&kb7  
* @version 1.0 BXms;[  
*/ tc ;'oMUP  
public class SelectionSort implements SortUtil.Sort { ^n Jyo:DO;  
{PP9$>4`l  
/* jl.p'$Fbn  
* (non-Javadoc) f 3V Dv9(  
* >eQr<-8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^ |~ml Y@w  
*/ H<hVTc{K  
public void sort(int[] data) { $4kH3+WJ  
int temp; rEhX/(n#  
for (int i = 0; i < data.length; i++) { >zsid:  
int lowIndex = i; >2$5eI  
for (int j = data.length - 1; j > i; j--) { Mv 544>:  
if (data[j] < data[lowIndex]) { EC2+`HJ"  
lowIndex = j; U @ ?LP  
} $EZN1\  
} _ nA p6i  
SortUtil.swap(data,i,lowIndex); k(>h^  
} {e[%;W%c&  
} =!O*/6rz  
/tV/85r  
} 'FlJpA}  
E1dD7r\  
Shell排序: KH)D 08  
Xp\/YJOibd  
package org.rut.util.algorithm.support; ORGD  
geQ{EwO8n  
import org.rut.util.algorithm.SortUtil; =ph&sn$;L  
Nk=JBIsKv  
/** (Fq5IGs  
* @author treeroot O ,rwP  
* @since 2006-2-2 +a&p$\  
* @version 1.0 /kL $4CA  
*/ iLP7!j  
public class ShellSort implements SortUtil.Sort{ Tus}\0/i>  
IEKU-k7}Z  
/* (non-Javadoc) !TZhQiorC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s+Fi @lg,  
*/ iHwLZ[O{  
public void sort(int[] data) { UNijFGi  
for(int i=data.length/2;i>2;i/=2){ =PRx?q`d  
for(int j=0;j insertSort(data,j,i); S)QAXjH  
} ;Op3?_  
} u p.Q>28r  
insertSort(data,0,1); l Z#o+d2Y  
} lzw3=H  
F:*W5xX  
/** sK{l 9  
* @param data +iRq8aS_  
* @param j .Ha'p.  
* @param i A+y  
*/ ;\EiM;Q]  
private void insertSort(int[] data, int start, int inc) { WZOY)>K  
int temp; t+5E#!y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mj|)nOd  
} j4?@(u9;j  
} k(zsm"<q  
} ?9l [y  
$0bjKy  
} m(], r})  
-':Y\:W  
快速排序: Hzrtlet  
[: xiZ  
package org.rut.util.algorithm.support; ~m|Mg9-  
KIR'$ 6pn~  
import org.rut.util.algorithm.SortUtil; M?=;JJ:  
[V4{c@  
/** * ),8PoT  
* @author treeroot OB[o2G<0  
* @since 2006-2-2 'n<iU st  
* @version 1.0 nz9DLAt  
*/ y5Tlpi`g  
public class QuickSort implements SortUtil.Sort{ GUF"<k  
r]OK$Ql  
/* (non-Javadoc) h~C.VJWl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8$(Dz]v|[&  
*/ !61Pl/uQ  
public void sort(int[] data) { !LkW zn3  
quickSort(data,0,data.length-1); PW3GL3+  
} ypJ".  
private void quickSort(int[] data,int i,int j){ p>_;^&>&  
int pivotIndex=(i+j)/2; Vy_2.  
file://swap JG9`h#  
SortUtil.swap(data,pivotIndex,j); VmzbZTup  
5{n*"88  
int k=partition(data,i-1,j,data[j]); P2nft2/eu?  
SortUtil.swap(data,k,j); 2e$w?W0^  
if((k-i)>1) quickSort(data,i,k-1); P"<U6zM\sP  
if((j-k)>1) quickSort(data,k+1,j); Ou{v/'9z,  
##Z_QB(;  
} b;)~wU=  
/** F)z;Z6{t4  
* @param data ,39aF*r1Q  
* @param i ]7;\E\o  
* @param j iCHt1VV]  
* @return Bi@&nAhn@  
*/ upeU52@\  
private int partition(int[] data, int l, int r,int pivot) { C7H/N<VAq  
do{ DJP2IP  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a_h]?5 :c  
SortUtil.swap(data,l,r);  [ `]4P&  
} e" ]2=5g  
while(l SortUtil.swap(data,l,r); %cE 2s`  
return l; ^<LY4^  
} )5|I_PXB  
='TE,et@d  
} +za8=`2o  
~G27;Npy  
改进后的快速排序: 8foJI^3  
YC_1Ks  
package org.rut.util.algorithm.support; ;<0LXYL;  
'R&uD~Q  
import org.rut.util.algorithm.SortUtil; Yq(G;mjM  
V138d?Mm  
/** Z3!f^vAi&  
* @author treeroot bFA!=uvA  
* @since 2006-2-2 e@{i  
* @version 1.0 0oEOre3^%  
*/ 191&_*Xb  
public class ImprovedQuickSort implements SortUtil.Sort { PQ@L+],C  
kNqH zo  
private static int MAX_STACK_SIZE=4096; -{`@=U  
private static int THRESHOLD=10; |Yq$s U  
/* (non-Javadoc) [!%![E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "_2Ng<2  
*/ a,78l@d(  
public void sort(int[] data) { Jv.U Q  
int[] stack=new int[MAX_STACK_SIZE]; #z1H8CFL"  
5MzFUv0)  
int top=-1; uUKcB:  
int pivot; V 21njRS  
int pivotIndex,l,r; YDGS}~m~Q  
!Ci~!)$z6  
stack[++top]=0; Cuc$3l(%  
stack[++top]=data.length-1; Agrp(i"\@  
OLI$1d_  
while(top>0){ eHDef  
int j=stack[top--]; ^Q&u0;OJ  
int i=stack[top--]; QJ|ap4r  
e)E$}4  
pivotIndex=(i+j)/2; ~q&pF"va8  
pivot=data[pivotIndex]; QM?#{%31  
XT;u<aJs  
SortUtil.swap(data,pivotIndex,j); o!Rd ^  
'Wa,OFd\8  
file://partition tl'n->G>v  
l=i-1; C{2xHd/*  
r=j; m!U9m  
do{ N25V ]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c^`]`xiX  
SortUtil.swap(data,l,r); m[k_>e\ u  
} y*MF&mQ[  
while(l SortUtil.swap(data,l,r); f@co<iA  
SortUtil.swap(data,l,j); %p X6QRt?  
gNGr!3*)w  
if((l-i)>THRESHOLD){ V] Et wA  
stack[++top]=i; 5s?Hxn  
stack[++top]=l-1; 42L @w  
} eSW{Cb  
if((j-l)>THRESHOLD){ $`Ix:gi  
stack[++top]=l+1; M@W[Bz  
stack[++top]=j; _w*}\~`=^  
} I5h[%T  
xAggn  
} @]bPVG?d  
file://new InsertSort().sort(data); 2S' {!A  
insertSort(data); _j_x1.l  
} -|rLs$V1r  
/** !;_H$r0  
* @param data `-3o+ID\  
*/ -X+H2G  
private void insertSort(int[] data) { <_(/X,kBK  
int temp; c)0amM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $wYFEz  
} >hH0Q5aL  
} DS|KkTy3  
} S>.F_Jl  
fg#x7v4O  
} @Tfl>/%  
HHjt/gc}`  
归并排序:  s}onsC  
R/`q/0T.  
package org.rut.util.algorithm.support; L,; D@Xi  
bqQq=SO  
import org.rut.util.algorithm.SortUtil; KsrjdJx, '  
NzKUtwnIz  
/** |j3'eW&=  
* @author treeroot LK"  bC  
* @since 2006-2-2 RI2f`p8k  
* @version 1.0 5'a3huRtV  
*/ #yI.nzA*  
public class MergeSort implements SortUtil.Sort{ e?bYjJ q  
5sPywk{  
/* (non-Javadoc) , *qCf@$I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~XeFOM q  
*/ Quf_'  
public void sort(int[] data) { 0q\7C[R_  
int[] temp=new int[data.length]; `"@X.}\  
mergeSort(data,temp,0,data.length-1); m`6Yc:@E  
} A8A ~!2V  
oUQ07z\C  
private void mergeSort(int[] data,int[] temp,int l,int r){ @Mvd'.r<;  
int mid=(l+r)/2; a^5^gId5l!  
if(l==r) return ; A[WV'!A,  
mergeSort(data,temp,l,mid); |#l=  
mergeSort(data,temp,mid+1,r); e4FM} z[  
for(int i=l;i<=r;i++){ 1y^K/.5-  
temp=data; #y|V|nd  
} d3^OEwe  
int i1=l; rw)kAe31  
int i2=mid+1; 0ult7s}  
for(int cur=l;cur<=r;cur++){ '&;yT[  
if(i1==mid+1) aQ j*KMc  
data[cur]=temp[i2++]; rwIe qV{:  
else if(i2>r) i* R,QN)  
data[cur]=temp[i1++]; fri0XxF  
else if(temp[i1] data[cur]=temp[i1++]; mW%?>Z1=>d  
else 22(*J<  
data[cur]=temp[i2++]; BK,sc'b  
} l<(Y_PE:  
} ~7!7\i,Y8\  
N)% ;jh:T  
} yk2!8  
97!>%d[0  
改进后的归并排序: W(fr<<hL  
l8K5k:XCU3  
package org.rut.util.algorithm.support; 27ckdyQx  
>MJ?g-  
import org.rut.util.algorithm.SortUtil; KNgH|5Pb  
EliTFxp  
/** Cc?TSZ8[  
* @author treeroot \8O O)98'  
* @since 2006-2-2 -)!> M>=s  
* @version 1.0 Ch )dLPz@  
*/ pS4&w8s  
public class ImprovedMergeSort implements SortUtil.Sort { #<( = }?  
eK/?%t  
private static final int THRESHOLD = 10; TST4Vy3  
(eCFWmO  
/* ECa$vvK m  
* (non-Javadoc) 9s +z B  
* -VDo[Zy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nxQ?bk}*d  
*/ vFrt|JC_{  
public void sort(int[] data) { mYB`)M*Y  
int[] temp=new int[data.length]; :"0J=>PH:  
mergeSort(data,temp,0,data.length-1); b{DiM098  
} UkCnqNvx  
$V6^G*Q  
private void mergeSort(int[] data, int[] temp, int l, int r) { *s}|Hy  
int i, j, k; o  A* G  
int mid = (l + r) / 2; g=}v>[k E  
if (l == r) J` { 6l  
return; +a= 0\lpOy  
if ((mid - l) >= THRESHOLD) #n\C |  
mergeSort(data, temp, l, mid); y'ja< 1I>  
else wxLXh6|6%_  
insertSort(data, l, mid - l + 1); }W)=@t  
if ((r - mid) > THRESHOLD) ,(G%e  
mergeSort(data, temp, mid + 1, r); gJ2 H=#M  
else (kTXP_  
insertSort(data, mid + 1, r - mid);  &K^MN d  
<I;*[;AK  
for (i = l; i <= mid; i++) { U3vEdw<lV  
temp = data; YEjY8]t  
} 5=?i;P  
for (j = 1; j <= r - mid; j++) { AV&yoag1  
temp[r - j + 1] = data[j + mid]; jn9 ShF  
} ~c{:DM  
int a = temp[l]; cd;NpN  
int b = temp[r]; h$C@j~  
for (i = l, j = r, k = l; k <= r; k++) { DJh&#b  
if (a < b) { ydWtvFuS  
data[k] = temp[i++]; !rxp?V n -  
a = temp; PM$Ee #62R  
} else { &ntBU]< q  
data[k] = temp[j--]; \o3"~\|6C  
b = temp[j]; j_?cpm{~ml  
} FgA//)1  
} dTEJ=d40  
} BH0!6Oq  
jj\[7 O*  
/** {gf>*  
* @param data e{G_GycH  
* @param l rqCa 2  
* @param i wCZO9sU:6=  
*/ QL"gWr`R  
private void insertSort(int[] data, int start, int len) { D_|B2gdZY  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); hQJWKAf,/  
} >Pe:I  
} P#GD?FUc  
} AZFWuPJo  
} >e5zrgV  
Q882B1H  
堆排序: r -f  
0rMqWP  
package org.rut.util.algorithm.support; urY`^lX~  
o%(bQV-T  
import org.rut.util.algorithm.SortUtil; /L) 9tt.  
MQcE6)  
/** 5{ >0eFzG  
* @author treeroot <D/al9  
* @since 2006-2-2 j~ym<-[{a  
* @version 1.0 g"t^r3  
*/ V*B0lI7`B  
public class HeapSort implements SortUtil.Sort{ 4".J/I5u  
.PVLWW  
/* (non-Javadoc) eVnbRT2y&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) si/er"&o  
*/ qc!xW ,I  
public void sort(int[] data) { _^uc 0=  
MaxHeap h=new MaxHeap(); l^ 4OC  
h.init(data); &R]pw`mTH  
for(int i=0;i h.remove(); 7{BnXN[  
System.arraycopy(h.queue,1,data,0,data.length); hd^x}iK"  
} G_oX5:J*  
$fArk36O#  
private static class MaxHeap{ |uha 38~  
`ypL]$cW  
void init(int[] data){ Md(JIlh3  
this.queue=new int[data.length+1]; q&M:17+:Q  
for(int i=0;i queue[++size]=data; K_-MkY?+  
fixUp(size); =mrY/ :V  
} J6|JWp  
} C@@$"}%v2  
AF#_nK) @  
private int size=0; &zN@5m$k;  
`!c,y~r[  
private int[] queue; .K9l*-e[=  
cqQRU  
public int get() { .Vx|'-u  
return queue[1]; GEE ]Kr  
} dXP6"V@iI  
>_Uj?F:  
public void remove() { k8&FDz  
SortUtil.swap(queue,1,size--); Fe= "EDh  
fixDown(1); ?R?Grw)`H  
} #4y,a_)  
file://fixdown A o3HX  
private void fixDown(int k) { i>Iee^_(  
int j; gg8c7d:Q  
while ((j = k << 1) <= size) { GJak.,0t  
if (j < size %26amp;%26amp; queue[j] j++; .)ST[G]WK  
if (queue[k]>queue[j]) file://不用交换 1)U} i ^  
break; F!CAitxd  
SortUtil.swap(queue,j,k); Dr 'sIH^  
k = j; [,7-w  
} VN|G5*  
} fNxw&ke8&  
private void fixUp(int k) { Kfjryo9  
while (k > 1) { ="lI i$>O  
int j = k >> 1; 8IWw jyRr  
if (queue[j]>queue[k]) *CUdGI&  
break; vv h.@f  
SortUtil.swap(queue,j,k); ;5M<j3_*  
k = j; b7'F|h^  
} h*'d;_(,  
} } J;~P 9Y  
iBHw[X,b  
} t{ H 1u  
STlPT5e.}  
} ;f(n.i  
=jUnM> 23  
SortUtil: 56ZrCr  
jM\ %$_/  
package org.rut.util.algorithm; VCf|`V~G  
0#`)Prop6  
import org.rut.util.algorithm.support.BubbleSort; YKq0f=Ij  
import org.rut.util.algorithm.support.HeapSort; L1MrrC  
import org.rut.util.algorithm.support.ImprovedMergeSort; lM&UFEl-\  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?waebuj>  
import org.rut.util.algorithm.support.InsertSort; =, TSMV  
import org.rut.util.algorithm.support.MergeSort; U?EG6t  
import org.rut.util.algorithm.support.QuickSort; (fd[P|G_]  
import org.rut.util.algorithm.support.SelectionSort;  QT_^M1%  
import org.rut.util.algorithm.support.ShellSort; )d_U)b7i  
#01/(:7  
/** [|z'"Gk{  
* @author treeroot WgZ@N  
* @since 2006-2-2 ".M:`BoW4  
* @version 1.0 28+HKbgK  
*/ @H4wHlb  
public class SortUtil { kd`YSkZ  
public final static int INSERT = 1; EP0a1.C  
public final static int BUBBLE = 2; OequU'j  
public final static int SELECTION = 3; )]}$   
public final static int SHELL = 4; >Qk97we'9  
public final static int QUICK = 5; ER2V*,n@  
public final static int IMPROVED_QUICK = 6; 7V/Zr  
public final static int MERGE = 7; I}ndRDz[  
public final static int IMPROVED_MERGE = 8; .pKN4  
public final static int HEAP = 9; &z QWIv  
l]u7.~b  
public static void sort(int[] data) { +Z$a1 Y@  
sort(data, IMPROVED_QUICK); cE 2Rr  
} DCK_F8  
private static String[] name={ rT<1S?jR  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `r9^:TMN  
}; [$oM  
(ic@3:xR  
private static Sort[] impl=new Sort[]{ EGEMZCdk2  
new InsertSort(), `=v@i9cTZ  
new BubbleSort(), DZ%8 |PmB  
new SelectionSort(), X_!$Pk7ma  
new ShellSort(), _;V YFs  
new QuickSort(), .Map   
new ImprovedQuickSort(), K_FBy  
new MergeSort(), a^x  0 l  
new ImprovedMergeSort(), @QX4 \  
new HeapSort() 5 Af?Yxv  
}; v'$ykZ!Z  
uAQg"j  
public static String toString(int algorithm){ 3m~U(yho  
return name[algorithm-1]; 6<+8}`@B>G  
} X; 5S  
vS2(Q0+TZi  
public static void sort(int[] data, int algorithm) { rSbQ}O4V  
impl[algorithm-1].sort(data); >["Kd.ye  
} Y& m<lnB  
hN}5u"pS  
public static interface Sort { &#%D.@L  
public void sort(int[] data); [@zkv)D6  
} )Jmw|B  
8vu2k>  
public static void swap(int[] data, int i, int j) { vo.EM1x  
int temp = data; hOV_Oqe4?  
data = data[j]; eNivlJ,K|@  
data[j] = temp; <%(f9j  
} 7%X+O8  
} fA;x{0CAMX  
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