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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。 &,$A7:  
插入排序: 6Mk@,\1  
`$@1NL7>  
package org.rut.util.algorithm.support; /~ V"v"7E  
#C>pA<YJzK  
import org.rut.util.algorithm.SortUtil; 1uXtBk6  
/** TF=S \ Q  
* @author treeroot 2N)Ywqvj  
* @since 2006-2-2 'Fc&"(!||  
* @version 1.0 X% _~9'#%  
*/ 3\D jV2t  
public class InsertSort implements SortUtil.Sort{ 5>A3;P  
iNQk{n  
/* (non-Javadoc) ix!u#7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1Kc* MS  
*/ HHEFX9u  
public void sort(int[] data) { Iv/yIS  
int temp; h Qu9ux  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kN]#;R6  
} N(1jm F  
} a-QHm;_S  
} o@pM??&x  
Rut6m5>  
} / m?Z!  
a~XNRAh  
冒泡排序: :K8T\  
,Y!T!o} 1  
package org.rut.util.algorithm.support; ~s5Sk#.z5  
DK)qBxc8  
import org.rut.util.algorithm.SortUtil; "lmiGR*u  
) Fm  
/** `kj7I{'l%9  
* @author treeroot &F.lo9JJ  
* @since 2006-2-2 4G`YZZQ  
* @version 1.0 B:x4H}`vh  
*/ 7Q[P  
public class BubbleSort implements SortUtil.Sort{ WMUw5h  
]e"NJkcm  
/* (non-Javadoc) E-"Jgq\aC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MESQAsx%  
*/ C)ChF`Ru':  
public void sort(int[] data) { w[|!$J?  
int temp; }%XNB1/`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'QW 0K]il  
if(data[j] SortUtil.swap(data,j,j-1); }y[o[>  
} 6Jj)[ R\5=  
} ?_tOqh@in  
} %pg*oX1VK6  
} )m)>k` 0  
E RMh% C  
} ;G\rhk  
U`8)rtYw  
选择排序: ,5L &$Q6  
$x2<D :  
package org.rut.util.algorithm.support; vF([mOZ  
0cS.|\ZTA  
import org.rut.util.algorithm.SortUtil; vMC;5r6*d  
-#Wc@\;  
/** K1+,y1c  
* @author treeroot Viw{<VH=  
* @since 2006-2-2 T%]: tDa  
* @version 1.0 75v*&-  
*/ RyM2CQg[  
public class SelectionSort implements SortUtil.Sort { igo7F@_,  
`zsKc 6%  
/* ]mqB&{g  
* (non-Javadoc) 8;Pdd1GyUL  
* (ZI&'"H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c dGl[dQ/  
*/ 0 /H1INve  
public void sort(int[] data) { mV4} -  
int temp; W%$p,^@S5  
for (int i = 0; i < data.length; i++) { QR8F'7S  
int lowIndex = i; d5],O48A  
for (int j = data.length - 1; j > i; j--) { Fvv6<E  
if (data[j] < data[lowIndex]) { XSD7~X/:  
lowIndex = j; Xg%zE  
} [%h^qJ  
} }5S2v+zE  
SortUtil.swap(data,i,lowIndex); jgO{DNe(=  
} 67sb D<r  
} )1]C%)zn  
Q,DumOq  
} t)v#y!Ci"  
{Rz`)qqE  
Shell排序: v~xG*e  
Jq; }q63:  
package org.rut.util.algorithm.support; /y-P) 3_  
/JfXK$`  
import org.rut.util.algorithm.SortUtil; k1cBMDSokO  
#/1Bam6  
/** gM= ~dBz  
* @author treeroot fcBS s\\C~  
* @since 2006-2-2 '"KK|]vJ  
* @version 1.0 U{_O=S u  
*/ O;zW'*c+  
public class ShellSort implements SortUtil.Sort{ T-x`ut7c  
qxrOfsh  
/* (non-Javadoc) lW2qVR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) odhgIl&u  
*/ 3NJH"amk  
public void sort(int[] data) { 5&xvY.!27V  
for(int i=data.length/2;i>2;i/=2){ MR~BWH?@1  
for(int j=0;j insertSort(data,j,i); q6DhypB  
} EfUo<E  
} Aqc(  
insertSort(data,0,1); 6D+k[oHZm  
} hQ\]vp7V  
/2U.,vw  
/** Y{S/A*X  
* @param data );*GOLka  
* @param j D0-e,)G}V,  
* @param i IQ~()/;3d  
*/ .9E`x>C  
private void insertSort(int[] data, int start, int inc) { t +#Ss v8  
int temp; Iq52rI}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jQdfFR  
} gGX/p6"  
} bEE:6)]G  
} < 37vWK1+  
1|]-F;b  
} Gm%[@7-  
Z*Y?"1ar  
快速排序: 5eU/ [F9  
'nLv0.7*  
package org.rut.util.algorithm.support; !Zwl9DX3  
jBQQ?cA  
import org.rut.util.algorithm.SortUtil; 2V0R|YUt  
f[v??^  
/** fXqe7[  
* @author treeroot /bb4nM_E/  
* @since 2006-2-2 {.2C>p  
* @version 1.0 :G`_IB\  
*/ rm cy-}e  
public class QuickSort implements SortUtil.Sort{ 0O:TKgb&C.  
)I <.DN&  
/* (non-Javadoc) R5FjJ>JE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mB,7YZv  
*/ |~/{lE=I  
public void sort(int[] data) { 6` s[PKP.  
quickSort(data,0,data.length-1); IW46-;l7  
} k^L (q\D  
private void quickSort(int[] data,int i,int j){ MaEh8*  
int pivotIndex=(i+j)/2; Vz,WPm$I  
file://swap N,O[pTwj  
SortUtil.swap(data,pivotIndex,j); [J];  
AsLAm#zq  
int k=partition(data,i-1,j,data[j]); |p+VitM7  
SortUtil.swap(data,k,j); +X&B'  
if((k-i)>1) quickSort(data,i,k-1); Ry(!< w,  
if((j-k)>1) quickSort(data,k+1,j); qd.b&i  
B}jZ~/D}  
}  O{4m-;  
/** Ug"B/UUFd  
* @param data l5MxJ>?4%B  
* @param i +:t1PV;l  
* @param j hb_Ia]b  
* @return [Cs2H8=#  
*/ }FK6o 6  
private int partition(int[] data, int l, int r,int pivot) { &@Q3CCDS  
do{ f+1]#"9i|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V*AG0@& !  
SortUtil.swap(data,l,r); UO&S6M]v7  
} ;EJ6C#} >7  
while(l SortUtil.swap(data,l,r); Ff,M ~zn  
return l; BBx"{~  
} s2$R2,  
Gq{v)iN  
} Rl)/[T  
oYF8:PYB  
改进后的快速排序: bZi>   
_S[H:b$?  
package org.rut.util.algorithm.support; (u*]&yk  
QL)UPf>Kp  
import org.rut.util.algorithm.SortUtil; '5Y8 rv<  
<wuP*vI "h  
/** f;b(W  
* @author treeroot mkWIJH  
* @since 2006-2-2 XI0O^[/n{  
* @version 1.0 U/ZbE?it>  
*/ Sb`>IlT\#  
public class ImprovedQuickSort implements SortUtil.Sort { "<&F=gV  
NBeGmC|  
private static int MAX_STACK_SIZE=4096; Qj=l OhM  
private static int THRESHOLD=10; m$o|s1t  
/* (non-Javadoc) hsl8@=_ B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jd%#eD*k9  
*/ kgQEg)A]!x  
public void sort(int[] data) { \<P W_'6  
int[] stack=new int[MAX_STACK_SIZE]; vxwctJ&  
}:BF3cH> 0  
int top=-1; /Ly%-py-$  
int pivot; ctCfLlK  
int pivotIndex,l,r; p7k0pSt  
Q`oi=O YB  
stack[++top]=0; #e#8I7P  
stack[++top]=data.length-1; A>PM'$"sT  
*L^{p.K4  
while(top>0){ YF;8il{p  
int j=stack[top--]; }r i"u;.R  
int i=stack[top--]; \Lc pl-;?  
5~sJ$5<,  
pivotIndex=(i+j)/2; 'UB<;6wy  
pivot=data[pivotIndex]; eg}|%GG  
2`lit@u&u  
SortUtil.swap(data,pivotIndex,j); hA"N&v~  
o~}q@]]  
file://partition ,:#prT[P"  
l=i-1; K.cNx  
r=j; <1@_MY o  
do{ & IDF9B  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U,]z)1#X|  
SortUtil.swap(data,l,r); +Q'/c0o  
} ,og@}gOMB  
while(l SortUtil.swap(data,l,r); |S4yol  
SortUtil.swap(data,l,j); 3v{GP>  
n,0}K+}  
if((l-i)>THRESHOLD){ 0zEn`rq&  
stack[++top]=i; }^QY<Cp|  
stack[++top]=l-1; W=|B3}C?  
} pa+ y(!G  
if((j-l)>THRESHOLD){ 6 o+zhi;E  
stack[++top]=l+1; P#yS]F/  
stack[++top]=j; G U!XD!!&  
} eAl&[_o|S  
#fFEo)YG  
} LAr6J  
file://new InsertSort().sort(data); 0nl)0|?Az  
insertSort(data); #v`G4d  
} ?W#! S  
/** ;bZ)q  
* @param data J|I|3h<T  
*/ ?d_Cy\G  
private void insertSort(int[] data) { v5*SoUOF  
int temp; a. gu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;[6u79;I  
} }R J2\CP  
} GI~;2 `V  
} S</" ^C51J  
F\XzP\  
} 7lh%\  
8gx^e./  
归并排序: `yVJ `} hm  
|d Soq~Vz  
package org.rut.util.algorithm.support; >#V8l@IH  
EJ86k>]  
import org.rut.util.algorithm.SortUtil; R{*p \;  
KcSvf;sx  
/** (K2 p3M^  
* @author treeroot #!5GGe{I  
* @since 2006-2-2 Bd7A-T)q!  
* @version 1.0 ;z[yNW8  
*/ 1 ltoLd\{  
public class MergeSort implements SortUtil.Sort{ =XYfzR  
=g&0CFF<  
/* (non-Javadoc) i=SX_#b^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )JZfC&,  
*/ #S1)n[  
public void sort(int[] data) { fCTjTlh  
int[] temp=new int[data.length]; M"P$hb'F  
mergeSort(data,temp,0,data.length-1); -Y+[`0$'  
} Oo#wPT;1^(  
#7g~U m%p  
private void mergeSort(int[] data,int[] temp,int l,int r){ &'(:xjN  
int mid=(l+r)/2; zL> nDnL 4  
if(l==r) return ; 7gJ`G@y  
mergeSort(data,temp,l,mid); l\(t~Q  
mergeSort(data,temp,mid+1,r); 'T.> oP0>  
for(int i=l;i<=r;i++){ 1~_]"Y'  
temp=data; PPmZ[N9(;  
} n'R 8nn6^  
int i1=l; V6Q[Y>84~a  
int i2=mid+1; ~fS#)X3 D  
for(int cur=l;cur<=r;cur++){ d2 d^XMe!  
if(i1==mid+1) "7gHn0e>  
data[cur]=temp[i2++]; mWigy` V^~  
else if(i2>r) .2u%;)S  
data[cur]=temp[i1++]; QXF>xZ~  
else if(temp[i1] data[cur]=temp[i1++]; N($j;<Q  
else ,;{mH]"s  
data[cur]=temp[i2++]; zZA I"\;W  
} @@! R Iq!  
} 45_zO#  
HM<V$ R  
} bbnAF*7s8  
AA@J~qd u  
改进后的归并排序: yyZjMnuD  
6vmkDL8{A8  
package org.rut.util.algorithm.support; 4S9AXE6  
` a@NYi6  
import org.rut.util.algorithm.SortUtil; w%L0mH2]ng  
 m>a6,#I  
/** 5#iv[c  
* @author treeroot 2sf/^XC1  
* @since 2006-2-2 Ib!`ChZ  
* @version 1.0 !.F`8OD`u  
*/ (D))?jnC  
public class ImprovedMergeSort implements SortUtil.Sort { AJq'~fC;I  
3J@# V '  
private static final int THRESHOLD = 10; o fN|%g /  
##FN0|e&  
/* Z|3l2ucl  
* (non-Javadoc) ;B tRDKn  
* }G-qOt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9}5Q5OZ  
*/ vL-%"*>v  
public void sort(int[] data) { gBresHrlH  
int[] temp=new int[data.length]; <6Br]a60RR  
mergeSort(data,temp,0,data.length-1); 8)sqj=  
} ww[STg  
<]"aP1+C  
private void mergeSort(int[] data, int[] temp, int l, int r) { pJK puoiX  
int i, j, k; x]Q+M2g?  
int mid = (l + r) / 2; b> &kL  
if (l == r) FV!  
return; \ bd? `."  
if ((mid - l) >= THRESHOLD) _+.z2} M  
mergeSort(data, temp, l, mid); D@7\Fg  
else yrE|cH'f0  
insertSort(data, l, mid - l + 1); )I$_wB!UV  
if ((r - mid) > THRESHOLD) JG0TbM1(Bt  
mergeSort(data, temp, mid + 1, r); po\QMe  
else cQS}pQyYN  
insertSort(data, mid + 1, r - mid);  UTHGjE  
V)_mo/D!D  
for (i = l; i <= mid; i++) { *~:4&$  
temp = data; {*yhiE,  
} 9iUkvnphh  
for (j = 1; j <= r - mid; j++) { qwiM .b5  
temp[r - j + 1] = data[j + mid]; *:_ xy{m\  
} & i)p^AmM  
int a = temp[l]; Cp_"PvTmT  
int b = temp[r]; V: 2|l!l*  
for (i = l, j = r, k = l; k <= r; k++) { q#c\  
if (a < b) { +f;z{)%B  
data[k] = temp[i++]; *-Z JF6  
a = temp; !H~G_?Mf\O  
} else { Q~te`  
data[k] = temp[j--]; h8 $lDFo  
b = temp[j]; \b{=&B[Q$'  
} Pdrz lu   
} \;$j "i&  
} !!DHfAV]  
KokmylHu  
/** ]geO%m  
* @param data ^W3xw[{  
* @param l oju4.1  
* @param i P0 hC4Sxf  
*/ 7:9WiN5b  
private void insertSort(int[] data, int start, int len) { "qMd%RP  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7o'kdY Jzo  
} G0xk @SE  
} FgKDk!ci  
} p/4GOU5g  
} u2@:[:Ao  
+p>tO\mo  
堆排序: @0-<|,^]  
AW%^Xt  
package org.rut.util.algorithm.support; ]M-j_("&  
z;2kKQZm  
import org.rut.util.algorithm.SortUtil; NIQNzq?a^  
bTb|@  
/** 8! pfy"  
* @author treeroot j@&F[r  
* @since 2006-2-2 D}&U3?g=  
* @version 1.0 tb"UGa  
*/ v`*!Bhc-  
public class HeapSort implements SortUtil.Sort{ "b|qyT* Sl  
= 0Z}s  
/* (non-Javadoc) ./rNq!*a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yAW%y  
*/ <x53b/ft  
public void sort(int[] data) { [?.k8;k  
MaxHeap h=new MaxHeap(); EO:i+e]=  
h.init(data); |z-A;uL<  
for(int i=0;i h.remove(); OU/PB  
System.arraycopy(h.queue,1,data,0,data.length); diaLw  
} :BN qr[=b  
Y'DI@  
private static class MaxHeap{ ZZX|MA!  
1<Qb"FN!2  
void init(int[] data){ [59_n{S 1  
this.queue=new int[data.length+1]; 5)AMl)  
for(int i=0;i queue[++size]=data; &Plc  
fixUp(size); [yW0U:m  
} xbvZ7g^  
} ?FA} ;?v  
#JWW ;M6F  
private int size=0; Nw/4z$].J  
=NQDxt}  
private int[] queue; Cevl#c5p>  
g-bHf]'  
public int get() { F $^RM3  
return queue[1]; es6!p 7p?  
} }[ld=9p(  
{M )Y6\v  
public void remove() { sV%<U-X  
SortUtil.swap(queue,1,size--); 7:)=  
fixDown(1); u$X [=  
} to|O]h2*U2  
file://fixdown Vof[yL `  
private void fixDown(int k) { v1oq[+  
int j; si.ZTG9m  
while ((j = k << 1) <= size) { iT227v!s  
if (j < size %26amp;%26amp; queue[j] j++; RplLU7  
if (queue[k]>queue[j]) file://不用交换 .!/DM-C  
break; -B*= V  
SortUtil.swap(queue,j,k); 8Mf6*G#Y  
k = j; 8LB,8 *L^  
} J NPEyC  
} onI%Jl sq  
private void fixUp(int k) { iV58 m  
while (k > 1) { ; $i{>mDT  
int j = k >> 1; zogw1g&C  
if (queue[j]>queue[k]) hs!a'E  
break; &5h{XSv  
SortUtil.swap(queue,j,k); o:W>7~$jr=  
k = j; Ej~vp2  
} c>6dlWTqX  
} G3 rTzMO  
YC8wo1;Y!  
} J<'[P$D  
lm i,P-Q  
}  z"Miy  
~:'tp28?  
SortUtil: 1hp`.!3]H  
?#YheML?  
package org.rut.util.algorithm; :PE{2*  
HkVnTC  
import org.rut.util.algorithm.support.BubbleSort; Tty_P,  
import org.rut.util.algorithm.support.HeapSort; o$;t  
import org.rut.util.algorithm.support.ImprovedMergeSort; #^4p(eZ[}  
import org.rut.util.algorithm.support.ImprovedQuickSort; _kg<K D=P  
import org.rut.util.algorithm.support.InsertSort; %UT5KYd!=N  
import org.rut.util.algorithm.support.MergeSort; @a$_F3W  
import org.rut.util.algorithm.support.QuickSort; -K eoq  
import org.rut.util.algorithm.support.SelectionSort; z6)b XL[f  
import org.rut.util.algorithm.support.ShellSort; *:gx1wd  
t~]n"zgovz  
/** rofj&{w  
* @author treeroot `u$  Rd  
* @since 2006-2-2 H=RzY-\a%  
* @version 1.0 >'ev_eAk  
*/ b+Vfi9<  
public class SortUtil { JZI)jIh  
public final static int INSERT = 1; 2[ = =  
public final static int BUBBLE = 2; <:/Lap#D^  
public final static int SELECTION = 3; p!B& &)&db  
public final static int SHELL = 4; v3PtiKS  
public final static int QUICK = 5; BbsgZ4  
public final static int IMPROVED_QUICK = 6; 55q!2>Jh.  
public final static int MERGE = 7; Q]$gw,H"6  
public final static int IMPROVED_MERGE = 8; v3O+ ;4  
public final static int HEAP = 9; 7^)8DwAl  
-<H\VT%98  
public static void sort(int[] data) { 8?LsV<  
sort(data, IMPROVED_QUICK);  >M~1{  
} )Q= EmZbJz  
private static String[] name={ [$M=+YRHMW  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7+ +Fak  
}; -Pt.  
\]<e Lw- v  
private static Sort[] impl=new Sort[]{ *U>"_h T0  
new InsertSort(), mv] .  
new BubbleSort(), -UY5T@as  
new SelectionSort(), : N9,/-s  
new ShellSort(), E+z),"QA  
new QuickSort(), + OKk~GYf  
new ImprovedQuickSort(), k;/K']4y  
new MergeSort(), TWE>"8]  
new ImprovedMergeSort(), 2iM]t&^<+  
new HeapSort() dhrh "x_?:  
}; b3.  
[l44,!Z&  
public static String toString(int algorithm){ E$SYXe[,  
return name[algorithm-1]; 2_T2?weD5  
} Ig&H0S  
|"}oGL6-  
public static void sort(int[] data, int algorithm) { Ey|{yUmU+  
impl[algorithm-1].sort(data); &3gC&b^i  
} CWT#1L=  
]2E#P.-!b  
public static interface Sort { mR,w~wP  
public void sort(int[] data); {E=BFs  
} $, hHR:  
zUuOX5-6x  
public static void swap(int[] data, int i, int j) { gGZ-B<  
int temp = data; 5 EhOvt8  
data = data[j]; FEY_(70  
data[j] = temp; 7N:3  
} TOT#l6yqdd  
} M( w'TE@  
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