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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。 zMO#CZ t  
插入排序: qUn+1.[%  
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package org.rut.util.algorithm.support; 5:5d=7WX  
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import org.rut.util.algorithm.SortUtil; Aeo=m}C;  
/** 9x8Vsd  
* @author treeroot '{.8tT ?tJ  
* @since 2006-2-2 M^hz<<:$  
* @version 1.0 ^^n (s_g  
*/ u i$4  
public class InsertSort implements SortUtil.Sort{ gq4X(rsyD  
*WFd[cKE  
/* (non-Javadoc) lOe|]pQ.,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L8Z@Dk7Y  
*/ ;i/? fw[h  
public void sort(int[] data) { ZSD7%gE<D  
int temp; o Q*LP{M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tGbx/$Y   
} voTP,R[}85  
} V eY&pPQ  
} !"-.D4*r  
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} Fq o h!F  
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冒泡排序: |YV> #l  
e"{"g[b/7  
package org.rut.util.algorithm.support; {^:NII]  
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import org.rut.util.algorithm.SortUtil; u86@zlzd  
28c6~*Te #  
/** :qAX9T'{t  
* @author treeroot % -+7=x  
* @since 2006-2-2 3)2{c  
* @version 1.0 myqwU`s  
*/ %3"U|Za+   
public class BubbleSort implements SortUtil.Sort{ ;mGPX~38  
cq3Z}Cp  
/* (non-Javadoc) lk R^2P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W!Hn`T   
*/ TiG?r$6v%  
public void sort(int[] data) { {X_I>)Wg  
int temp; 9 HlWoHuC  
for(int i=0;i for(int j=data.length-1;j>i;j--){ a'n17d&  
if(data[j] SortUtil.swap(data,j,j-1); d+ZXi'  
} \1n (Jr.<  
} 9Nx%Sdu  
} I_N:j,Mx  
} \d]Y#j<  
2m*/$GZ  
} BSJS4+,E  
K@*4=0  
选择排序: .c@Y ?..+  
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package org.rut.util.algorithm.support; @,c` #,F/  
KK6z3"tk5  
import org.rut.util.algorithm.SortUtil; x(4"!#  
V[WL S?-)  
/** %W=BdGr[8z  
* @author treeroot C~"UOFX  
* @since 2006-2-2 2i !\H$u`  
* @version 1.0 ~ F-lO1  
*/ "68X+!  
public class SelectionSort implements SortUtil.Sort { cu'(Hj  
G)M! , Q  
/* HD2C^V2@M  
* (non-Javadoc) 2Qh)/=8lM  
* -Lb7=98  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i: jB  
*/ Dsc0 ;7~6  
public void sort(int[] data) { njO~^Hl7  
int temp; Yo=$@~vN]  
for (int i = 0; i < data.length; i++) { o~L(;A]yN  
int lowIndex = i; ~Lg ;7i1L  
for (int j = data.length - 1; j > i; j--) { 9k6/D.Dz  
if (data[j] < data[lowIndex]) { uqa pj("  
lowIndex = j; Y|J=72!]  
} YK$[)x\S  
} iVf7;M8O  
SortUtil.swap(data,i,lowIndex); ~{-Ka>A  
} ])%UZM6  
} >}2 ,2  
/lPnf7  
} =PNkzFUo  
7'Hh^0<  
Shell排序: #b:YY^{g_  
gu~R4 @3  
package org.rut.util.algorithm.support; B.;@i;7L  
x*=m'IM[  
import org.rut.util.algorithm.SortUtil; @ uN+]e+3  
>H5t,FfQL  
/** ocMTTVo  
* @author treeroot kzNRRs\e  
* @since 2006-2-2 KK4e'[Wf  
* @version 1.0 R#8cOmZ  
*/ 7 b(  
public class ShellSort implements SortUtil.Sort{ YjJ^SU`*  
?9!9lSH6%  
/* (non-Javadoc) H+]h+K9\7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3/uvw>$  
*/ , /jHhKW  
public void sort(int[] data) { 5JK'2J&  
for(int i=data.length/2;i>2;i/=2){ %g89eaEZ  
for(int j=0;j insertSort(data,j,i); ja/wI'J<  
} Bgzq  
} uudd'L  
insertSort(data,0,1); J7%rPJ  
} 6gO(  8  
GO@<?>K  
/** .a(G=fk  
* @param data }$qrNbLJ  
* @param j skTa IGRL  
* @param i r$'.$k\  
*/ :A:7^jrhi  
private void insertSort(int[] data, int start, int inc) { ,O:p`"3`0=  
int temp; 1ah,Zth2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,Shzew+  
} m|x_++3  
} :hW(2=%  
} {<gX~./]c  
VAUd^6Xdwx  
} &2[Xu4*  
L:mE)Xq2  
快速排序: L;L_$hu)  
3O1Lv2)_  
package org.rut.util.algorithm.support; 2EN}"Du]mj  
Ui9;rh$1eU  
import org.rut.util.algorithm.SortUtil; I.|b:c xN  
,{msJyacmR  
/** d)D!np=  
* @author treeroot &m[}%e%~0  
* @since 2006-2-2 02tN=}Cj)  
* @version 1.0 -aE,KQ  
*/ bi+g=cS  
public class QuickSort implements SortUtil.Sort{ "rEfhzmyF  
jq8TfJ|   
/* (non-Javadoc) 8fBhX,1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #f_'&m  
*/ .d$Q5Qae  
public void sort(int[] data) { '@w'(}3!3R  
quickSort(data,0,data.length-1); f}4A ,%:1  
} =2DK?]K;  
private void quickSort(int[] data,int i,int j){ BhbfPQ  
int pivotIndex=(i+j)/2; tlg}"lY  
file://swap u2$.EM/iae  
SortUtil.swap(data,pivotIndex,j); aaN/HE_  
.3n\~Sn  
int k=partition(data,i-1,j,data[j]); i O?f&u  
SortUtil.swap(data,k,j); `,/5skeJ  
if((k-i)>1) quickSort(data,i,k-1); ?$tD  
if((j-k)>1) quickSort(data,k+1,j); L]"$d F  
b\o>4T  
} < .e4  
/** 3fXrwmBT8  
* @param data c+T`X?.j  
* @param i YRf$?xa  
* @param j vdB2T2F  
* @return i^Jw`eAmT  
*/ F^%\AA]8  
private int partition(int[] data, int l, int r,int pivot) { P O0Od z  
do{ m$(OQ,E  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Mw-L?j0o[k  
SortUtil.swap(data,l,r); @2d9 7.X  
} M.Tp)ig\#  
while(l SortUtil.swap(data,l,r); DTo"{!  
return l; w L>*WLfR  
} #2:?N8vz*  
#Z `Tk)u/  
} 5WxNH}{  
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改进后的快速排序: 99By.+~pX  
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package org.rut.util.algorithm.support; AFvv+ ss  
77aUuP7Iw  
import org.rut.util.algorithm.SortUtil; n_LK8  
TvT>UBqj=  
/** ZU.E}Rn:  
* @author treeroot Bz>f  
* @since 2006-2-2 ,3MHZPJ?k]  
* @version 1.0 COw!a\Jl  
*/ 0Bkz)4R  
public class ImprovedQuickSort implements SortUtil.Sort { Cc`-34/%  
a MFUj+^  
private static int MAX_STACK_SIZE=4096; tQUKw@@Q  
private static int THRESHOLD=10; upZc~k!1\  
/* (non-Javadoc) *&_cp]3-WF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5=p<"*zJ  
*/ *3@8,~_tp  
public void sort(int[] data) { /uDcJ1u66  
int[] stack=new int[MAX_STACK_SIZE]; gM]E8%;{  
B^zg#x#8  
int top=-1; WS.g` %  
int pivot; P_  8!Gp  
int pivotIndex,l,r; v UO[V$rx  
KC2Z@  
stack[++top]=0; 7P*\|Sxk%  
stack[++top]=data.length-1; fi~@J`  
)t7MD(  
while(top>0){ GVn'p Wg  
int j=stack[top--]; '/0e!x/8  
int i=stack[top--]; "zTy_0[;  
h&d"|<  
pivotIndex=(i+j)/2; gp$Rf9\  
pivot=data[pivotIndex]; F]>+pU  
v.TgB)  
SortUtil.swap(data,pivotIndex,j); -JPkC(V7]  
c>3? T^=  
file://partition 4tUt"N  
l=i-1; n4 N6]W\5  
r=j; #6 [F&  
do{ l7VTuVGUJ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q{b-2k  
SortUtil.swap(data,l,r); Lr6C@pI  
} 6biR5&Y5U&  
while(l SortUtil.swap(data,l,r); 2$!,$J-<Y  
SortUtil.swap(data,l,j); es%py~m)  
v JVh%l+  
if((l-i)>THRESHOLD){ }''0N1,/  
stack[++top]=i; 3c wBPqH  
stack[++top]=l-1; #;@I.  
} ~EXCYUp4v  
if((j-l)>THRESHOLD){ R~[~(`/S  
stack[++top]=l+1; 2Kr>93O  
stack[++top]=j; S'ms>ZENC  
} HUCJA-OZGL  
?vI2mr a+  
} o~"Y_dLsW  
file://new InsertSort().sort(data); 5_L,7\5#  
insertSort(data); 0nB[Udk?  
} FyPG5-  
/** qIQ 61><  
* @param data /Qef[$!(  
*/ .Z"`:4O   
private void insertSort(int[] data) { 9(z) ^ G  
int temp; [E6ceX0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e00 }YWf%  
} _G.!^+)kEm  
} Ef ?|0Gm  
} lVd-{m)  
; 2V$`k  
} !hS)W7!ik  
OU#p^ 5K  
归并排序: 94t`&jZ&|u  
6d/v%-3  
package org.rut.util.algorithm.support; +s;Vfc$b]H  
hmG8 {h/  
import org.rut.util.algorithm.SortUtil; ~ QohP`_  
5ZH3}B^L$  
/** Y{#*;p*I  
* @author treeroot 34k>O  
* @since 2006-2-2 $9r4MMs{$  
* @version 1.0 L%{YLl-zf]  
*/ dw5"}-D  
public class MergeSort implements SortUtil.Sort{ } snS~kx  
GQd[7j[sh  
/* (non-Javadoc) Dr=$}Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]SPuNBsy)  
*/ :2 :VMIa  
public void sort(int[] data) { 1-PlRQs.1  
int[] temp=new int[data.length];  iD])E/  
mergeSort(data,temp,0,data.length-1); z#P`m,~t0  
} `{ HWk^  
Ty~z%=H  
private void mergeSort(int[] data,int[] temp,int l,int r){ .\ya  
int mid=(l+r)/2; WQiRbbX  
if(l==r) return ; 5/h-H r  
mergeSort(data,temp,l,mid); O`GF |  
mergeSort(data,temp,mid+1,r); r%ebC   
for(int i=l;i<=r;i++){ OW@)6   
temp=data; FeO1%#2<y  
}  (#O"  
int i1=l; bqA`oRb\  
int i2=mid+1; V mQ'  
for(int cur=l;cur<=r;cur++){ mEi(DW)(  
if(i1==mid+1) &=n/h5e0t&  
data[cur]=temp[i2++]; %xQ'i4`  
else if(i2>r) Sf.OBU1rs  
data[cur]=temp[i1++]; "Y^ 9g/  
else if(temp[i1] data[cur]=temp[i1++]; dPf7o   
else 7[mfI?*m  
data[cur]=temp[i2++]; 2cIKph  
} 5k Q@]n:<k  
} >G%oWRk  
/^\E:(RH  
} nTwJR  
8Lx1XbwK  
改进后的归并排序: J` gG`?  
V rx,'/IS8  
package org.rut.util.algorithm.support; [{GN#W|AGP  
SDE$ymP x  
import org.rut.util.algorithm.SortUtil; GRkN0|ovfj  
f_xvXf:  
/** 9Oq(` 4  
* @author treeroot |K{ d5\_  
* @since 2006-2-2 c?. i;4yh  
* @version 1.0 5~jz| T}s  
*/ U] GD6q  
public class ImprovedMergeSort implements SortUtil.Sort { 4pQf*l8e  
n=F rv*"Z  
private static final int THRESHOLD = 10; Mlo,F1'?>  
Xy!NBh7I  
/* V.qH&FJ=l  
* (non-Javadoc) p=E#!cn3  
* P2aFn=f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k0ai#3iJ  
*/ @n.n[zb\|  
public void sort(int[] data) { i|AWaG)  
int[] temp=new int[data.length]; Aaq%'07ihW  
mergeSort(data,temp,0,data.length-1); I=<Qpd4  
} i '*!c  
n^hkH1vY  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~"J1 @<  
int i, j, k; e`LkCy[_  
int mid = (l + r) / 2; vxC];nCC#  
if (l == r) 4Otq3s34FT  
return; GQhy4ji'z  
if ((mid - l) >= THRESHOLD) T`Up%5Dk  
mergeSort(data, temp, l, mid); BN%cX 2j  
else %*npLDi  
insertSort(data, l, mid - l + 1); p}pd&ut1  
if ((r - mid) > THRESHOLD) wuYak"KX  
mergeSort(data, temp, mid + 1, r); &QW&K  
else _6r[msH"  
insertSort(data, mid + 1, r - mid); 9s[   
0!ZaR 6  
for (i = l; i <= mid; i++) { `O0Qtq.  
temp = data; c^pQitPv  
} "U eq  
for (j = 1; j <= r - mid; j++) { 9*K-d'm  
temp[r - j + 1] = data[j + mid]; a@|H6:|  
} ob2_=hQnC  
int a = temp[l]; 6D2ot&5WW  
int b = temp[r]; TlkhI  
for (i = l, j = r, k = l; k <= r; k++) { kp<Au)u  
if (a < b) { 2YY4 XHQS  
data[k] = temp[i++]; qpCaW0]7  
a = temp; EsX(<bx  
} else { \#) YS  
data[k] = temp[j--]; =p=/@FN  
b = temp[j]; :A @f[Y'9  
} )[ZXPD  
} T$R#d&t  
} `L7^f!  
*n&Sd~Mg  
/** #V]8FW  
* @param data |gu@b~8  
* @param l _b-g^#L%  
* @param i Qb>("j~Z  
*/ c_+fA  
private void insertSort(int[] data, int start, int len) { 6fI2y4yEz  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); L?j<KW  
} <\Y(+?+uZ  
} 41Q)w=hoN  
} Et(H6O 8  
} j n SZ@u  
H' /V<%  
堆排序: /j$pV  
@sZ7Ka  
package org.rut.util.algorithm.support; X@tA+   
I(7iD. ^:  
import org.rut.util.algorithm.SortUtil; RHNAHw9  
s[h;9 I1w  
/** -=8f*K[W  
* @author treeroot \ctzv``/n  
* @since 2006-2-2 $!9/s S?  
* @version 1.0 Z]TQ+9t  
*/ Y%eW6Y#  
public class HeapSort implements SortUtil.Sort{ ':_gYA  
X o9vE3  
/* (non-Javadoc) cQThpgha  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P, l (4  
*/ VWK/(>TP  
public void sort(int[] data) { CL7 /J[TS  
MaxHeap h=new MaxHeap(); kv2o.q  
h.init(data); {fl[BX]kZ  
for(int i=0;i h.remove(); \I4Uj.'> \  
System.arraycopy(h.queue,1,data,0,data.length); W?E,"z  
} CPcUB4a%#  
%@)q=*=y  
private static class MaxHeap{ ONcLhwH  
}b}jw.2Wu  
void init(int[] data){ \_R<Q?D+  
this.queue=new int[data.length+1]; 4]0:zS*O  
for(int i=0;i queue[++size]=data; SC2LY  
fixUp(size); -#/DK   
} ]:?S}DRG  
} n[K%Xs)  
W1 xPK*  
private int size=0; J>#yA0QD2  
fSVM[  
private int[] queue; hslT49m>  
lV 4TFt ,  
public int get() { 7SYe:^Dx  
return queue[1]; 2h*aWBLk  
} )T gfd5B  
4h--x~ @  
public void remove() { 04v ~ K  
SortUtil.swap(queue,1,size--); \vc&V8  
fixDown(1); tS3&&t  
} AT3HH QD  
file://fixdown g5Io=e@s  
private void fixDown(int k) { !- QB>`7$  
int j; 0k?]~ f  
while ((j = k << 1) <= size) { Y`-q[F?\y  
if (j < size %26amp;%26amp; queue[j] j++; t4:/qy  
if (queue[k]>queue[j]) file://不用交换 7zE1>.  
break; "oZ_1qi<  
SortUtil.swap(queue,j,k); <^{(?*  
k = j; Nr,I`x\N  
} KV&6v`K/N  
} F 8sOc&L  
private void fixUp(int k) { $J)`Ru6.  
while (k > 1) { d`$w3Hy  
int j = k >> 1; +cmi?~KS*  
if (queue[j]>queue[k]) <GQ=PrT|/  
break; gjnEN1T22  
SortUtil.swap(queue,j,k); 'IIa,']H  
k = j; D5bi)@G7z  
} KOXG=P0  
} &K[~Ab_  
o::9M_;  
} 4%_c9nat  
MzKl=G  
} 09Eg ti.  
i-4L{T\K  
SortUtil: Ic!x y  
N:+EGmp  
package org.rut.util.algorithm; -:45Q{u/  
3&M0@/  
import org.rut.util.algorithm.support.BubbleSort; #FRm<9/j  
import org.rut.util.algorithm.support.HeapSort; 46\!W(O~y  
import org.rut.util.algorithm.support.ImprovedMergeSort; '4~I %Z7L  
import org.rut.util.algorithm.support.ImprovedQuickSort; a"g\f{v0AR  
import org.rut.util.algorithm.support.InsertSort; j%]sym  
import org.rut.util.algorithm.support.MergeSort; R!X+-  
import org.rut.util.algorithm.support.QuickSort; if\`M'3Xx  
import org.rut.util.algorithm.support.SelectionSort; ){,M v:#+T  
import org.rut.util.algorithm.support.ShellSort; w}$;2g0=a<  
FrLv%tK|  
/** UEYJd&n0CB  
* @author treeroot C;U4`0=8  
* @since 2006-2-2 awz.~c++  
* @version 1.0 a;~< iB;3"  
*/ /#eS3`48  
public class SortUtil { "66#F  
public final static int INSERT = 1; J[S!<\_!  
public final static int BUBBLE = 2; r #w7qEtD  
public final static int SELECTION = 3; Z]k@pR !  
public final static int SHELL = 4; $1zWQJd[-  
public final static int QUICK = 5; !SGRK01  
public final static int IMPROVED_QUICK = 6; x=x%F;  
public final static int MERGE = 7; +s`cXTlFrk  
public final static int IMPROVED_MERGE = 8; ta x:9j|~  
public final static int HEAP = 9; !>Q\Y`a,*  
~Ij/vyB_  
public static void sort(int[] data) { J#3[,~  
sort(data, IMPROVED_QUICK); MMD=4;X  
} \xC#Zs[<  
private static String[] name={ .Xe_Gp"x  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 368 g> /#'  
}; rqm":N8@  
-w)v38iX!  
private static Sort[] impl=new Sort[]{ /f+BeQ3#/  
new InsertSort(), hPgYKa8u  
new BubbleSort(), L@Qvj-5e  
new SelectionSort(), ?pd /cj^  
new ShellSort(), #RSUChe7w  
new QuickSort(), D ZH2U+K  
new ImprovedQuickSort(), Hm|N {  
new MergeSort(), Vl<7>  
new ImprovedMergeSort(), ~P~q'  
new HeapSort()  OmfHr lA  
}; S-7C'dc  
pbWjTI$  
public static String toString(int algorithm){ ]8Xip/uE  
return name[algorithm-1]; Clap3E|a  
} Ja/  
`@:TS)6X0  
public static void sort(int[] data, int algorithm) { TpYh)=;k  
impl[algorithm-1].sort(data); Pl`Nniy  
} oY; C[X  
eC6wrpZO  
public static interface Sort { pY\ =f0]  
public void sort(int[] data); *1_Ef).  
} ,zK E$  
;3bUgI}.J  
public static void swap(int[] data, int i, int j) { 3QdCu<eBZ  
int temp = data; QX=x^(M$m  
data = data[j]; yO7#n0q  
data[j] = temp; ^/x\HGrw  
} Z^_zcH'  
} ,]n~j-X  
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