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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。 Ee3 -oHa  
插入排序: 8wEUly  
XN&cM,   
package org.rut.util.algorithm.support; +\R__tx;  
p![UOI"W  
import org.rut.util.algorithm.SortUtil; gyz_$T@x  
/** VPr`[XPXb  
* @author treeroot 0-Ga2Go9  
* @since 2006-2-2 =91wC  
* @version 1.0 d-cW47  
*/ kNd(KQ<.17  
public class InsertSort implements SortUtil.Sort{ po!bRk[4  
Zmc"  
/* (non-Javadoc) 3\ {?L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O=5q<7PM.  
*/ ;#?G2AAv  
public void sort(int[] data) { hiKyU! )Hv  
int temp; 207FD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fZiwuq !_  
} wnU-5r&!]  
}  JfsvK2I  
} ]iY O}JuX  
o~{rZ~  
} ' ~ 1/*F%8  
dKQu  
冒泡排序: AM0CIRX$  
v[<x>?i D_  
package org.rut.util.algorithm.support; w9w=2 *  
Sq SiuO.D  
import org.rut.util.algorithm.SortUtil; ` 7P%muY.  
 X`20=x  
/** m-2!r*(zt  
* @author treeroot %x-`Y[  
* @since 2006-2-2 d{Cg3v`Rd  
* @version 1.0 Oz4vV_a&'  
*/ ][dst@?8Oz  
public class BubbleSort implements SortUtil.Sort{ 6DG%pF,  
"Q`Le{  
/* (non-Javadoc) tR\cS )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZmDM=qN  
*/ D (WdI  
public void sort(int[] data) { L0)w~F ?m  
int temp; %Jji<M]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ nR=!S5>S  
if(data[j] SortUtil.swap(data,j,j-1); USg,=YM  
} PjP6^"  
} 9H/C(Vo  
} GOsOFs"I  
} rI OKCL?  
2f0mr?l)N  
} . {vMn0c  
A*~BkvPr  
选择排序: !CdF,pd/)m  
NY6;\ 7!n  
package org.rut.util.algorithm.support; TQtHU6  
%O$=%"D6  
import org.rut.util.algorithm.SortUtil; R"y xpw  
;$67GK  
/** rvacCwI  
* @author treeroot P(UY}oU  
* @since 2006-2-2 ;\(LovUy6  
* @version 1.0 CofTTYl  
*/ lA` qB1x  
public class SelectionSort implements SortUtil.Sort { d`,z4 _  
l{gR6U{e  
/* Kk,u{EA  
* (non-Javadoc) o)GesgxFa5  
* =M6{{lI/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5@J]#bp0M  
*/ ~3Za"q*0s  
public void sort(int[] data) { HB,?}S#TP  
int temp; r~G  amjS  
for (int i = 0; i < data.length; i++) { >`l^ C  
int lowIndex = i; 1En:QQ4/  
for (int j = data.length - 1; j > i; j--) { UIkO_/}  
if (data[j] < data[lowIndex]) { &;bey4_J  
lowIndex = j; XmP,3KG2{S  
} h1)ny1;  
} 0#NbAMt  
SortUtil.swap(data,i,lowIndex); HV'M31m~q  
} Y>T<Qn^D  
} ::_bEmk  
 ^Kl*}  
} j/jFS]iC  
+k h Tl:  
Shell排序: P:WxhO/  
}; R2M  
package org.rut.util.algorithm.support; WL|<xNL  
OnH3Ss$  
import org.rut.util.algorithm.SortUtil; )gD2wk(  
K_n GZ/`[  
/**  9I:3  
* @author treeroot 3mHP=)  
* @since 2006-2-2 G?,"AA;  
* @version 1.0 !*3]PZ25a(  
*/ +4p=a [  
public class ShellSort implements SortUtil.Sort{ ^ZIs>.'  
+^jm_+  
/* (non-Javadoc) J7sH]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e _(';Lk  
*/ w5yX~8UzJ  
public void sort(int[] data) { 0|]d^bo  
for(int i=data.length/2;i>2;i/=2){ ">M&/}4  
for(int j=0;j insertSort(data,j,i); 3ZN\F  
} 8;"9A  
} }ik N  
insertSort(data,0,1); Ct^=j@g  
} )H`V\ H[0P  
x+TdTe;p  
/** da~_(giD*  
* @param data M(yWE0 3  
* @param j &^w "  
* @param i yVQW|D0,j  
*/ .<E7Ey#  
private void insertSort(int[] data, int start, int inc) { 5i}g$yjZ<  
int temp; upaQoX/C  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E#3tkFF0Z[  
} 3}8L!2_p  
} $E!f@L  
} LqO=wK~  
b@Dt]6_ UL  
} cml~Oepf  
k'*vG6!  
快速排序: c[V.j+Iy#^  
]rSg,Q >E  
package org.rut.util.algorithm.support; ao0^;  
K-"`A.:S  
import org.rut.util.algorithm.SortUtil; ;at1|E*  
=.OzpV)=V  
/** K}M lC}oIt  
* @author treeroot XH(-anU"!P  
* @since 2006-2-2 7=NKbv]  
* @version 1.0 )#GF:.B  
*/ TyA1Qk\  
public class QuickSort implements SortUtil.Sort{ BR-wL3x b  
p5py3k  
/* (non-Javadoc) )*R';/zaI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >$yA ,N  
*/ cW_l|  
public void sort(int[] data) { {2QP6XsJ  
quickSort(data,0,data.length-1); [$ uKI,l  
} B'mUDW8\D  
private void quickSort(int[] data,int i,int j){ :>0,MO.^~K  
int pivotIndex=(i+j)/2; MBLDx sZ-  
file://swap *YX5bpR?  
SortUtil.swap(data,pivotIndex,j); #z70:-`.[M  
u.G aMl4 (  
int k=partition(data,i-1,j,data[j]); FhPCFmmUT  
SortUtil.swap(data,k,j); BJ\81 R  
if((k-i)>1) quickSort(data,i,k-1); WMW=RgiW\  
if((j-k)>1) quickSort(data,k+1,j); ir>S\VT4  
\rATmjsKzS  
} V rd16s  
/** sP}u  zS  
* @param data kma>'P`G  
* @param i ,L.V>Ae  
* @param j )pe17T1|  
* @return LE)$_i8gX  
*/ @Kn@j D;  
private int partition(int[] data, int l, int r,int pivot) { dz>Jl},`k  
do{ X 5X D1[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |H]0pbC)w  
SortUtil.swap(data,l,r); 1G67#L)USq  
} 34[TM3L].  
while(l SortUtil.swap(data,l,r); *-(o. !#1  
return l; >]%$lSCW\D  
} WbBd<^Q  
+V9xKhR;x  
} kwqY~@W  
ADVS}d!;]  
改进后的快速排序: 6|{&7=1t  
yGSZ;BDW:K  
package org.rut.util.algorithm.support; Gg]Jp:GF  
%rgW}Z5  
import org.rut.util.algorithm.SortUtil; #, #:{&H  
fBh/$    
/** +]z Rn  
* @author treeroot #D%6b  
* @since 2006-2-2 XN>bv|*q  
* @version 1.0 BjsTHS&  
*/ %3|/t-US  
public class ImprovedQuickSort implements SortUtil.Sort { 4eG\>#5  
}N).$  
private static int MAX_STACK_SIZE=4096; TI<3>R  
private static int THRESHOLD=10; n)Cr<^j  
/* (non-Javadoc) h:U#F )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aG]^8`~>'  
*/ 1Sza%D;3  
public void sort(int[] data) { =kzp$ i  
int[] stack=new int[MAX_STACK_SIZE]; hQ!59  
Ziub%C[oV  
int top=-1; (fr=N5   
int pivot; C@Go]*c  
int pivotIndex,l,r; ,FH1yJ;Y&  
 UBj&T^j  
stack[++top]=0; #d*gWwnx"  
stack[++top]=data.length-1; F u^j- Io  
b62B|0i  
while(top>0){ rlawH}1b  
int j=stack[top--]; ~Hv>^u Mh  
int i=stack[top--]; hW/Ve'x[  
(i1x<  
pivotIndex=(i+j)/2; WHOX<YJs  
pivot=data[pivotIndex]; "frioi`a2  
-^(KGu&L&u  
SortUtil.swap(data,pivotIndex,j); ='=4tj=z  
{&^PDa|nD  
file://partition >3ZhPvE-p'  
l=i-1; 9Li&0E  
r=j; ;+|Z5+7!6  
do{ XGbpH<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 'Ha> >2M  
SortUtil.swap(data,l,r); vdQ#C G$/  
} tLN^k;w  
while(l SortUtil.swap(data,l,r); vD:J!|hs(  
SortUtil.swap(data,l,j); : ir3u  
YTmHht{j#  
if((l-i)>THRESHOLD){ )8eb(!}7  
stack[++top]=i; @Tq-3Um  
stack[++top]=l-1; K/*"U*9Kv  
} GvgTbCxnN  
if((j-l)>THRESHOLD){ ,b IJW]h0  
stack[++top]=l+1; 3A[<LnKR^E  
stack[++top]=j; ' Q(kx*;  
} surNJ,)  
6&0G'PMf  
} 0s H~yvM5  
file://new InsertSort().sort(data); |HYST`  
insertSort(data); s :BW}PM  
} %G,7Ul1f  
/** jpS$5Ct  
* @param data ]];pWlo!  
*/ frDMFEXXP  
private void insertSort(int[] data) { <y~Ba@1u  
int temp; ~m,~;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h(~/JW[  
} $w <R".4  
} QRrAyRf[  
} %8%|6^,  
s^IC]sW\%  
} r\F2X J^  
4b;*:C4?  
归并排序: ]h' 38W  
_u u&?<h  
package org.rut.util.algorithm.support; 3N+B|WrM  
#1\`!7TO3  
import org.rut.util.algorithm.SortUtil; Bos} `S![  
L(u@%.S  
/** IGVq`Mxj  
* @author treeroot }!>\Ja<\  
* @since 2006-2-2 g-_=$#&{  
* @version 1.0 S9 $t9o  
*/ `GY3H3B  
public class MergeSort implements SortUtil.Sort{ M*D_p n&  
Tp{ jR<  
/* (non-Javadoc) 1#7|au%:)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o<Mcc j  
*/ K@xMPB8in  
public void sort(int[] data) { ~TXu20c  
int[] temp=new int[data.length]; X=Ar"Dx}}s  
mergeSort(data,temp,0,data.length-1); UBM#~~sM  
} '[%Pdd]! E  
3`{;E{  
private void mergeSort(int[] data,int[] temp,int l,int r){ j6~`C ?(  
int mid=(l+r)/2; a9.255  
if(l==r) return ; XOQ0(e6  
mergeSort(data,temp,l,mid); ;<' 'oY  
mergeSort(data,temp,mid+1,r); rP2h9Cb  
for(int i=l;i<=r;i++){ Y3FFi M[s~  
temp=data; T}1"  
} \v\ONp"  
int i1=l; );TB(PQsBT  
int i2=mid+1; );i J9+ V}  
for(int cur=l;cur<=r;cur++){ ;-Os~81o?  
if(i1==mid+1) ]3,  
data[cur]=temp[i2++]; DO-M0L  
else if(i2>r) hCF_pt+  
data[cur]=temp[i1++]; F%&lM[N%  
else if(temp[i1] data[cur]=temp[i1++]; jPZ+~:m+  
else GHn0(o&K  
data[cur]=temp[i2++]; 1!;~Y#  
} Qt{V&Z7  
} `AvK8Wh<+  
5 -|7I7(G$  
} nvLdgu4P>  
<pa-C2Ky  
改进后的归并排序: d}Guj/cx,  
N%Y!{k5T7  
package org.rut.util.algorithm.support; ohyq/u+y~A  
pO5j-d *  
import org.rut.util.algorithm.SortUtil; S^|`*%pq  
qzA_ ~=g  
/** )B&`<1Oie  
* @author treeroot +zk5du^gZ  
* @since 2006-2-2 wme#8/eUk  
* @version 1.0 4guR8 elM  
*/ t\ z@k9  
public class ImprovedMergeSort implements SortUtil.Sort { X(Mpg[,N"  
w/*#TDR  
private static final int THRESHOLD = 10; }a, ycFt  
cC/32SmY4  
/* sq(5k+y*J  
* (non-Javadoc) u$zRm(!RB  
* tN4&#YK<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sw; kUJ  
*/ Fq <JxamR  
public void sort(int[] data) { I~YV&12  
int[] temp=new int[data.length]; `uk=2k}&m  
mergeSort(data,temp,0,data.length-1); GYb&'#F~t  
} fK]%*i_"  
+aM[!pW(e  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1,$"'lKwt  
int i, j, k; a'Odw2Q_  
int mid = (l + r) / 2; : OjmaP  
if (l == r) NvTK7? v  
return; >b9J!'G,(  
if ((mid - l) >= THRESHOLD) *q,nALs  
mergeSort(data, temp, l, mid); Ja 5od  
else g@s`PBF7`  
insertSort(data, l, mid - l + 1); ,YBO}l  
if ((r - mid) > THRESHOLD) ,ZrR*W?iF  
mergeSort(data, temp, mid + 1, r); "K9[P :nw  
else Wf5;~RJC?  
insertSort(data, mid + 1, r - mid); 8mRZ(B>% X  
oH v.EO  
for (i = l; i <= mid; i++) { :eD-'#@$u  
temp = data; /4+Q; P  
} na9YlJ\  
for (j = 1; j <= r - mid; j++) { \<xo`2b  
temp[r - j + 1] = data[j + mid]; )16+Pm8  
} 5Uy *^C7M^  
int a = temp[l]; UY({[?Se  
int b = temp[r]; LY)Wwl*wc  
for (i = l, j = r, k = l; k <= r; k++) { PZ'|)  
if (a < b) { TJW8l[M  
data[k] = temp[i++]; *HHL a  
a = temp; [:(O`#  
} else { K re*~ "  
data[k] = temp[j--]; eFf9T@  
b = temp[j]; 5izpQ'>  
} m*jE\+)=^  
} o$%KbfXO]  
} TNN@G~@cm  
AX6:*aZB  
/** ecH7")  
* @param data Kf(Px%G6K  
* @param l E>*Wu<<  
* @param i 1R*;U8?  
*/ R=, pv'  
private void insertSort(int[] data, int start, int len) { xW9R -J \W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); k'&1,78[l  
} mC\<fo-u  
} ?6ssSjR}  
} ;w]1H&mc*A  
} 9eP*N(m<  
EXH,+3fQp  
堆排序: AB+lM;_>  
>$CNR*}@  
package org.rut.util.algorithm.support; ~l] w=[ z  
{6Nbar@3  
import org.rut.util.algorithm.SortUtil; L7GNcV]c  
/u9 0)x  
/** (vi^ t{k  
* @author treeroot y,1U]1TP  
* @since 2006-2-2 ,|?#+O{  
* @version 1.0 x5smJ__/  
*/ lB/ ^  
public class HeapSort implements SortUtil.Sort{ ;*FY+jM  
|9$C%@8  
/* (non-Javadoc) hv>Xr=RE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <_*5BO  
*/ | a i#rU  
public void sort(int[] data) { >QN-K]YLL  
MaxHeap h=new MaxHeap(); ,-k?"|tQ  
h.init(data); U61 LMH  
for(int i=0;i h.remove(); Zm++5b`W/[  
System.arraycopy(h.queue,1,data,0,data.length); [h' 22 W  
} IQ~Anp^R  
8::y5Yv]  
private static class MaxHeap{ Lp}V 94xT  
D,FgX/&i/  
void init(int[] data){ !nsr( 7X2  
this.queue=new int[data.length+1]; 32anmVnf  
for(int i=0;i queue[++size]=data; P92pQ_W  
fixUp(size); =x(k)RTDu  
} ;$$w`LyP  
} ds+2z=!!e  
m432,8 K3r  
private int size=0; 1g,gilc  
9PO5GYU  
private int[] queue; %a0q|)Nrj  
=Y!.0)t;*  
public int get() { v1}ijls  
return queue[1]; @raJB'  
} ~+BU@PHv  
'h~IbP  
public void remove() { %zEy.7Ux  
SortUtil.swap(queue,1,size--); %'=TYvB 2  
fixDown(1); U Lq`!1{   
} :U'n0\  
file://fixdown VB8eGMo  
private void fixDown(int k) { &\6(iL  
int j; SLNOOEN  
while ((j = k << 1) <= size) { QL2 LIs  
if (j < size %26amp;%26amp; queue[j] j++; F`,bFQ  
if (queue[k]>queue[j]) file://不用交换  myOW^  
break; ^Dfqc-]  
SortUtil.swap(queue,j,k); A93(} V7I  
k = j; 6wq%4RI0  
} p`U#  
} ~fcC+"7q/  
private void fixUp(int k) { @V Tw>=94  
while (k > 1) { Vz!{nL0Q(  
int j = k >> 1; " ~6&rt  
if (queue[j]>queue[k]) I7|a,Q^f  
break; ev/)#i#s{  
SortUtil.swap(queue,j,k); Dq!YB[Z$:  
k = j; ?aTC+\=  
} CJ)u#PmkJ  
} *?Wr^T  
]eFNR1<OP  
} km lb,P  
a #p`l>rx  
} =bvLMpa  
qf [J-"o  
SortUtil: vt(n: Xk  
e(DuJ-  
package org.rut.util.algorithm; 0s}gg[lj  
{ynI]Wj`L  
import org.rut.util.algorithm.support.BubbleSort; v6x jLP;O  
import org.rut.util.algorithm.support.HeapSort; Sv>CVp*  
import org.rut.util.algorithm.support.ImprovedMergeSort; PIQd=%?'  
import org.rut.util.algorithm.support.ImprovedQuickSort; qla=LS\-A+  
import org.rut.util.algorithm.support.InsertSort; `r\/5|M  
import org.rut.util.algorithm.support.MergeSort; +8|Xj!!*}  
import org.rut.util.algorithm.support.QuickSort; !l .^]|  
import org.rut.util.algorithm.support.SelectionSort; ,~l4-x.,  
import org.rut.util.algorithm.support.ShellSort; l}g_<  
Xo.3OER  
/** }J\7IsM&  
* @author treeroot C^U>{jf !  
* @since 2006-2-2 gMZrtK`<  
* @version 1.0 >k/ rJ[Sc  
*/ = 4'r+2[  
public class SortUtil { 5Go@1X]I  
public final static int INSERT = 1; wb]Z4/j#  
public final static int BUBBLE = 2; SEZ08:>x r  
public final static int SELECTION = 3; irB}h!@  
public final static int SHELL = 4; .0X 5Vy  
public final static int QUICK = 5; ~1,$  
public final static int IMPROVED_QUICK = 6; = P$7 "  
public final static int MERGE = 7; 0\"]XYOH  
public final static int IMPROVED_MERGE = 8; < r b5'  
public final static int HEAP = 9; t`V U<  
EzCi%>q  
public static void sort(int[] data) { YsTF10  
sort(data, IMPROVED_QUICK); Ac +fL  
} [,z>msEB.  
private static String[] name={ {;JFoe+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *tDxwD7  
};  .^rs VNG  
=`V9{$i  
private static Sort[] impl=new Sort[]{ akgvV~5  
new InsertSort(), +~lPf.  
new BubbleSort(), MP Q?Q]'  
new SelectionSort(), L N'})CI8m  
new ShellSort(), WO+>W+|N  
new QuickSort(), (|y@ ftr@  
new ImprovedQuickSort(), }~<9*M-P  
new MergeSort(), nqcD#HUv  
new ImprovedMergeSort(), Et)j6xz/F  
new HeapSort() 8..g\ZT  
}; 7V~ gqum  
?U~`'^@  
public static String toString(int algorithm){ UX ?S#:h  
return name[algorithm-1]; 09Z\F^*$F  
} >+ Im:fD  
f+QDjJ?z  
public static void sort(int[] data, int algorithm) { ^p\n/#B  
impl[algorithm-1].sort(data); M>jk"*hA|  
} ?SoRi</1  
hBW,J$B  
public static interface Sort { p;2NO&  
public void sort(int[] data); emS7q|^  
} >~G _'~_f  
%i.;~>  
public static void swap(int[] data, int i, int j) { \e?w8R.6w^  
int temp = data; G`u";w_  
data = data[j]; $n<X'7@0  
data[j] = temp; z'Fu} ho  
} F4&`0y:  
} 'd<1;Ayw  
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