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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。 tv26eK 38  
插入排序: t1]/Bw`j/  
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package org.rut.util.algorithm.support; \ 'Va(}v  
#*:^\z_Jd  
import org.rut.util.algorithm.SortUtil; $xWUzg1<U  
/** Qe{w)e0}`  
* @author treeroot q k 6  
* @since 2006-2-2 8CZ%-}-%$  
* @version 1.0 Z"RgqNf  
*/ *~>p;*  
public class InsertSort implements SortUtil.Sort{ X'-Yz7J?o  
X =%8*_  
/* (non-Javadoc) 7f4O~4.[i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :eSsqt9]9  
*/ N#2ldY *  
public void sort(int[] data) { =YTcWB  
int temp; - Z`RKR8C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3H`{ A/r  
} vENf3;o0  
} mf)+ 5On  
} Z XGi> E  
QW$p{ zo  
} l<BV{Gl  
eIfQ TV  
冒泡排序: U8AH,?]#  
O`Gq7=X  
package org.rut.util.algorithm.support; vaGF(hfTA  
N@L{9ak1  
import org.rut.util.algorithm.SortUtil; -sfv"?  
;}j(x;l>t  
/** &iVdqr1,  
* @author treeroot P6R_W  
* @since 2006-2-2 )9:5?,SO  
* @version 1.0 8'HS$J;C  
*/ {eV8h}KIl  
public class BubbleSort implements SortUtil.Sort{ `/ayg:WSU  
{*AA]z? zo  
/* (non-Javadoc) 7oW Mjw\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hddc-7s  
*/ ~y2zl  
public void sort(int[] data) { 2Jio_Hk  
int temp; ]Ob|!L(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 18!y7 _cFT  
if(data[j] SortUtil.swap(data,j,j-1); V@!)Pw  
} 4uo`XJuQ  
} dniU{v  
} eM:J_>7t  
} Iz5NA0[=2  
8v4 o+w P  
} kB> ~Tb0  
IF|6iKCE  
选择排序: =y4dR#R(\  
QCF'/G  
package org.rut.util.algorithm.support; !6T"J!F#  
~?AEtl#&"  
import org.rut.util.algorithm.SortUtil; PmRvjSIG  
M[gL7-%w\  
/** yGf7k>K'  
* @author treeroot dy&UF,l6  
* @since 2006-2-2 k(l2`I4V  
* @version 1.0 O,%,dtD[a  
*/ 8~]D!c8;a  
public class SelectionSort implements SortUtil.Sort { iU;e!\A  
WXl+w7jr  
/* )&Oc7\J,  
* (non-Javadoc) 6JDHwV  
* hd(FOKOP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `x#Ud)g  
*/ DS<1"4 b|  
public void sort(int[] data) { K"H\gmV_ g  
int temp; Ki2!sADd  
for (int i = 0; i < data.length; i++) { UtQey ;w  
int lowIndex = i;  ir6' \  
for (int j = data.length - 1; j > i; j--) { >s f g`4  
if (data[j] < data[lowIndex]) { e~9O#rQI  
lowIndex = j; BVNW1<_:  
} ~lys  
} [d6!  
SortUtil.swap(data,i,lowIndex); b}3"v(  
} jC9us>b  
} Xq*^6*E-}  
/Hyz]46  
} &0Yg:{k$  
.p&@;fZ  
Shell排序: 2gPqB*H  
d]pb1ECuu  
package org.rut.util.algorithm.support; (~=.[Y  
En?V\|,  
import org.rut.util.algorithm.SortUtil; xzm]v9k&  
0N.h:21(4  
/** !hBpon  
* @author treeroot 4hL%J=0:  
* @since 2006-2-2 bf"'xn9  
* @version 1.0 ?m |}}a  
*/ ["Ltqgx  
public class ShellSort implements SortUtil.Sort{ 2T~cOH;T  
 ?pTX4a&>  
/* (non-Javadoc) <+i(CGw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vxOqo)yO  
*/ gBm'9|?  
public void sort(int[] data) { _\ToA9m  
for(int i=data.length/2;i>2;i/=2){ sjr,)|#[  
for(int j=0;j insertSort(data,j,i); ;u UFgDi  
} :8A+2ra&  
} QPJ \Iu@D$  
insertSort(data,0,1); d(T4Kd$r  
} CubQ6@,  
.$qa?$@  
/** h[ DNhR  
* @param data dAh.I3  
* @param j cz>,sz~i  
* @param i ;]>kp^C#  
*/ Tlsh[@Q  
private void insertSort(int[] data, int start, int inc) { /kW Z 8Z  
int temp; mgq!)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *qd:f!Q3  
} <'a~Y3B"o  
}  Y'iX   
} ~t`^|cr|  
H}^'  
} <v_=k],W  
\<4N'|:  
快速排序: ;b$P*dSG}  
>lQo _p(;  
package org.rut.util.algorithm.support; I`kfe`_  
Z/#_Swv  
import org.rut.util.algorithm.SortUtil; w,LtQhQ  
m1"m KM  
/** 8i#  
* @author treeroot uJ !&T  
* @since 2006-2-2 Ms{";qiG  
* @version 1.0 (vs<Fo|]  
*/ N:1aDr;  
public class QuickSort implements SortUtil.Sort{ Kg[OUBv  
'wND  
/* (non-Javadoc) %tCv-aX4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RgJ@J/p"  
*/ Ys"wG B>  
public void sort(int[] data) { U v2.Jo/Q  
quickSort(data,0,data.length-1); ?[D3 -4  
} f%Q{}fC{*  
private void quickSort(int[] data,int i,int j){ aF{_"X2  
int pivotIndex=(i+j)/2; X'Ss#s>g  
file://swap <n2@;` D  
SortUtil.swap(data,pivotIndex,j); 8+zW:0"[  
3db{Tcn\@]  
int k=partition(data,i-1,j,data[j]); Jh26!%<Bl  
SortUtil.swap(data,k,j); Q]:O#;"<  
if((k-i)>1) quickSort(data,i,k-1); g{8RPw]  
if((j-k)>1) quickSort(data,k+1,j); /WrB>w  
f98,2I(>`+  
} 2"Os9 KD  
/** ^9g$/8[^c_  
* @param data z;c>Q\Q  
* @param i gq+SM  i=  
* @param j 1K72}Gj)ZL  
* @return @IT[-d  
*/ t&r.Kf9Z\  
private int partition(int[] data, int l, int r,int pivot) { $^Fl*:6  
do{ @,vmX z  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); DD| 0?i  
SortUtil.swap(data,l,r); sZ.<:mu[  
} Z*,e<zNQ  
while(l SortUtil.swap(data,l,r); D tsZP (  
return l; I= mz^c{  
} XHr*Rs.[=  
w+M/VsL  
} `zd,^.i5~  
7+O)AU{  
改进后的快速排序: )`u17 {  
=~#mF<z5  
package org.rut.util.algorithm.support; j{@O %fv=  
4ot<Uw5  
import org.rut.util.algorithm.SortUtil; $%<{zWQm  
?|nl93m  
/** vB:\ZX4  
* @author treeroot IpP%WW u  
* @since 2006-2-2 wwUI ;g  
* @version 1.0 P"YdB|I  
*/ eV;r /4  
public class ImprovedQuickSort implements SortUtil.Sort { th?+TNb^  
9^gYy&+>6]  
private static int MAX_STACK_SIZE=4096; E C?}iP  
private static int THRESHOLD=10; Ss3p6%V/  
/* (non-Javadoc) ^QK`z@B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =7Ln&tZ  
*/ }0'=}BE  
public void sort(int[] data) { xQoZ[  
int[] stack=new int[MAX_STACK_SIZE]; u?osX;'w  
+C( -f  
int top=-1; H4$qM_N  
int pivot; 'o AmA=  
int pivotIndex,l,r; !8{ VLg  
?Oyo /?/  
stack[++top]=0; sS D8Sx/  
stack[++top]=data.length-1; AjzTszByu  
@Jt$92i5PS  
while(top>0){ -JW~_Q[  
int j=stack[top--]; ]\E"oZ  
int i=stack[top--]; lZFu|(  
'-iEbE  
pivotIndex=(i+j)/2; VtBC~?2U)B  
pivot=data[pivotIndex]; YIQD9  
yx-{Pj X   
SortUtil.swap(data,pivotIndex,j); xc^@"  
asWk]jjMG  
file://partition 222 Y?3>@D  
l=i-1; : 4ryi&Y  
r=j; wk(25(1q  
do{ 8-Abg:)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  |/Nh#  
SortUtil.swap(data,l,r); |'^s3i&w  
} bJ d| mm/v  
while(l SortUtil.swap(data,l,r); =i/Df ?  
SortUtil.swap(data,l,j); bA;OphO(  
a:FU- ^B4~  
if((l-i)>THRESHOLD){ `Os=cMR  
stack[++top]=i; bI):-2&s}  
stack[++top]=l-1; wu <0or2  
} i:lc]B  
if((j-l)>THRESHOLD){ 0PzSp ]  
stack[++top]=l+1; f56yI]*N=<  
stack[++top]=j; $?= $F  
} ^q7V%{54  
727#7Bo  
} S%SYvA  
file://new InsertSort().sort(data); &@~K8*tmK  
insertSort(data); -amo8V;2H  
} UXm_-/&b9  
/** ,d"T2Hy  
* @param data M/ 3;-g  
*/ m+QS -woHn  
private void insertSort(int[] data) { #s)f3HU>  
int temp; Z@~gN5@,M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Kb~nC6yJc  
} bnxp[Qk|5  
} 1p&.\ ^  
} 9~SPoR/_0  
_O`prX.:B0  
} {X!vb  
)CGQ}  
归并排序: =RoE=) 1&-  
r!r08y f  
package org.rut.util.algorithm.support; xfk -Ezv  
($di]lbsT  
import org.rut.util.algorithm.SortUtil; D8A+`W?  
|J $A%27  
/** xUJ(tG3  
* @author treeroot Xdvd\H=  
* @since 2006-2-2 ;jP sS^X  
* @version 1.0 E-A9lJWr  
*/ Gp9 <LB\,  
public class MergeSort implements SortUtil.Sort{ HQ-[k$d W4  
wL;OQhI  
/* (non-Javadoc) cVi_#9u"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~OD6K`s3  
*/ X3:1KDVsV  
public void sort(int[] data) { "~r<ZG  
int[] temp=new int[data.length]; t]xz7VQ  
mergeSort(data,temp,0,data.length-1); ,Ag{-&  
} hY)zKX_r  
0'sZ7f<e7  
private void mergeSort(int[] data,int[] temp,int l,int r){ dXyMRGR Uq  
int mid=(l+r)/2; 2&hv6Y1  
if(l==r) return ; Y3~Uz#`SU  
mergeSort(data,temp,l,mid); r=j?0k '}]  
mergeSort(data,temp,mid+1,r); LkbD='\=  
for(int i=l;i<=r;i++){ e=Ox~2S  
temp=data; j.M]F/j  
} V&zeC/xSq  
int i1=l; l)r\SE1  
int i2=mid+1; y-pdAkDh  
for(int cur=l;cur<=r;cur++){ :zW? O#aL-  
if(i1==mid+1) 01(U)F\  
data[cur]=temp[i2++]; G|cjI*  
else if(i2>r) uQ=u@qtp  
data[cur]=temp[i1++]; RDps{),E;d  
else if(temp[i1] data[cur]=temp[i1++]; k>i88^kPV  
else Fe8X@63  
data[cur]=temp[i2++]; 3M#x)cW  
} bTs2$81[  
} HT7,B(.}  
1wgL^Qz@  
} ydWr&E5  
GRc)3 2,  
改进后的归并排序: GMU!GSY  
\`.v8C>vG  
package org.rut.util.algorithm.support; l;M,=ctB(  
Zma;An6  
import org.rut.util.algorithm.SortUtil; tP_.-//  
r] /Ej!|  
/** C  eEhe  
* @author treeroot 7mtx^  
* @since 2006-2-2 *r.% /^@  
* @version 1.0 >s<Bu'r  
*/ N8]DzE0%  
public class ImprovedMergeSort implements SortUtil.Sort { 9KK^1<46c  
RHsVG &<j  
private static final int THRESHOLD = 10; D#nHg  
@(R=4LL  
/* g0f4>m  
* (non-Javadoc) VEV?$R7;  
* 6AIqoX*p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y[J9"k(@  
*/ lhM5a \  
public void sort(int[] data) { r'noB<| e  
int[] temp=new int[data.length]; 2)BO@]n  
mergeSort(data,temp,0,data.length-1); UVDMYA0  
} O 0}uY:B  
GwO`@-}E  
private void mergeSort(int[] data, int[] temp, int l, int r) { .1(_7!m@  
int i, j, k; kTjn%Sn,  
int mid = (l + r) / 2; bAlty}U  
if (l == r) HOi~eX1d  
return; k;qS1[a  
if ((mid - l) >= THRESHOLD) CG uuadNI  
mergeSort(data, temp, l, mid); #x 6/"Y2  
else Up Z 9g"  
insertSort(data, l, mid - l + 1); hUpour |b  
if ((r - mid) > THRESHOLD) (~Z&U  
mergeSort(data, temp, mid + 1, r); a3n Wt  
else E"}%$=yK  
insertSort(data, mid + 1, r - mid); \LUW?@gLa  
Q7amp:JFb  
for (i = l; i <= mid; i++) { i59 }6u_f  
temp = data; -|x7<$Hw  
} -.Wwo(4  
for (j = 1; j <= r - mid; j++) { drpx"d[c  
temp[r - j + 1] = data[j + mid]; G!%m~+",  
} n)N!6u  
int a = temp[l]; x~k3kj  
int b = temp[r]; #ChTel  
for (i = l, j = r, k = l; k <= r; k++) { 2fdN@iruB  
if (a < b) { 9q]f]S.L  
data[k] = temp[i++]; `*[Kmb\  
a = temp; PY|zN|  
} else { ZQ"dAR/y  
data[k] = temp[j--]; I484c R2.  
b = temp[j]; 5VE=Oo#&  
} +:Xg7H*  
} FM%WMyb[  
} UhR^Y{W5  
wsdZwik  
/** sudh=_+>  
* @param data &$ }6:  
* @param l MoxWnJy}  
* @param i dkC_Sh{  
*/ #0) TS  
private void insertSort(int[] data, int start, int len) { [ `|t(E'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /#5rt&q  
} I!b"Rv=Nf-  
} ju:}%'  
} kM-8%a2i  
} vEjf|-Mb9  
)4o8SF7lz  
堆排序: |`yU \  
_I)TO_L;  
package org.rut.util.algorithm.support; b73}|4v  
S%H"i y  
import org.rut.util.algorithm.SortUtil; &pY$\  
"r`2V-E  
/** c}v8j2{  
* @author treeroot Sj)?!  
* @since 2006-2-2 _G`Q2hf"5  
* @version 1.0 wg_Z@iX  
*/ *56j'FX  
public class HeapSort implements SortUtil.Sort{ J_a2DM6d  
51% Rk,/o  
/* (non-Javadoc) *s, bz.[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  Jj%xLv%  
*/ F.(W`H*1+  
public void sort(int[] data) { QlVj#Jv;~  
MaxHeap h=new MaxHeap(); 3Ch42<  
h.init(data); rhYARr'  
for(int i=0;i h.remove(); },<Y \  
System.arraycopy(h.queue,1,data,0,data.length); ZC$u8$+P  
} n[BYBg1yG  
{Mo[C%  
private static class MaxHeap{ uD{^1c3x  
QP"5A7=m  
void init(int[] data){ D,$M$f1  
this.queue=new int[data.length+1]; )a!f")@uz  
for(int i=0;i queue[++size]=data; E Id>%0s5  
fixUp(size); Yq/vym-O5  
} Gqq< -drR  
} %/)z!}{  
A+Bq5mik  
private int size=0; 'xEomo#  
(7_ezWSl>  
private int[] queue; dM,{:eID  
ao7M(f  
public int get() { vh|m[p  
return queue[1]; I 8 ?  
} j!L7r'AV5  
/=V!lRs  
public void remove() { w3iX "w  
SortUtil.swap(queue,1,size--); j0F& WKk  
fixDown(1); 0LGHSDb  
} X+;#^A3  
file://fixdown ld%#.~Q  
private void fixDown(int k) { :\mdVS!o  
int j; <}mA>c'k  
while ((j = k << 1) <= size) { U_9|ED:  
if (j < size %26amp;%26amp; queue[j] j++; W`[7|8(6!  
if (queue[k]>queue[j]) file://不用交换 $Q|6W &?[;  
break; TJcHqzcUc  
SortUtil.swap(queue,j,k); SA"4|#3>7  
k = j; ,LOx!  
} "T8b.ng  
} daB 5E<?  
private void fixUp(int k) { eMOp}.zt|  
while (k > 1) { ?t;,Nk`jx  
int j = k >> 1; i*xVD`x~  
if (queue[j]>queue[k]) C9Cl$yZ  
break; x wfdJ(&  
SortUtil.swap(queue,j,k); >0:=<RW  
k = j; |+-b#Sa9  
} Nog{w  
} JBV 06T_4o  
3"HEXJMc  
} # b3 14  
ieOw&  
} FIJ]`  
aTaL|&(  
SortUtil: }PMlG  
Qc Xw -  
package org.rut.util.algorithm; R{B5{~m>W@  
U~|)=+%O  
import org.rut.util.algorithm.support.BubbleSort; :p1_ij]ND  
import org.rut.util.algorithm.support.HeapSort; 3;//o<  
import org.rut.util.algorithm.support.ImprovedMergeSort; P=ubCS'  
import org.rut.util.algorithm.support.ImprovedQuickSort; j;_E0j#  
import org.rut.util.algorithm.support.InsertSort; 1"l48NLL|  
import org.rut.util.algorithm.support.MergeSort; 3!KyO)8  
import org.rut.util.algorithm.support.QuickSort; *TL3-S?   
import org.rut.util.algorithm.support.SelectionSort; So NgDFD  
import org.rut.util.algorithm.support.ShellSort; wG 5H^>6u>  
|>JRJ"CFE  
/** E0A[{UA   
* @author treeroot -t*P=V|@  
* @since 2006-2-2 O/l/$pe  
* @version 1.0 YRaF@?^Gn  
*/ 2 I.Q-'@  
public class SortUtil { Q9g^'a  
public final static int INSERT = 1; khP Ub,  
public final static int BUBBLE = 2; Qoz4(~I  
public final static int SELECTION = 3; uY&t9L8  
public final static int SHELL = 4; 'Urx83  
public final static int QUICK = 5; e9F+R@8  
public final static int IMPROVED_QUICK = 6; ypvz&SzIh  
public final static int MERGE = 7; /p|L.&`U  
public final static int IMPROVED_MERGE = 8; B I>r'  
public final static int HEAP = 9; o~x49%X<c  
>b*}Td~J  
public static void sort(int[] data) { :dlG:=.W  
sort(data, IMPROVED_QUICK); BE!WCDg,  
} =1VpO{ q  
private static String[] name={ TaG (sRI  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $ 3Sm?  
}; C9%A?'`  
nI`9|W  
private static Sort[] impl=new Sort[]{ 5N#Sic M  
new InsertSort(), (]"`>, ray  
new BubbleSort(), >)F)@KAuN4  
new SelectionSort(), [WR*u\FF  
new ShellSort(), S2V+%Z _J  
new QuickSort(), *Fd(  
new ImprovedQuickSort(), ZjgfkZAS  
new MergeSort(), r#mH[|@W~  
new ImprovedMergeSort(), K &G  
new HeapSort() #!j wn^yq  
}; a/~1CrYr  
2Gc0pBqx  
public static String toString(int algorithm){ RbEtNwG@c  
return name[algorithm-1]; 7] >z e  
} P.Qz>c^-C  
)9 {!=k  
public static void sort(int[] data, int algorithm) { D' h%.  
impl[algorithm-1].sort(data); y#J8Yv8  
} ?[8s`caK.  
?2S<D5M Sb  
public static interface Sort { Cyp%E5b7  
public void sort(int[] data); o|1_I?_  
} nsXyReWka  
JIMi~mEiN  
public static void swap(int[] data, int i, int j) { U;]h/3P  
int temp = data; 2()/l9.O'  
data = data[j]; Y-v6M3$  
data[j] = temp; ^B'N\[  
} dJ7!je1N*  
} ^Zq3K  
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