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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。 E;wT4 T=  
插入排序: yhrjML2K  
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package org.rut.util.algorithm.support; q1v7(`O  
Mfnfp{.)  
import org.rut.util.algorithm.SortUtil; 'KDt%?24  
/** ubRhJ~XB  
* @author treeroot &j,# 5f(  
* @since 2006-2-2 &2S-scP  
* @version 1.0 Kg`P@  
*/ IwRP,MQ~  
public class InsertSort implements SortUtil.Sort{ 0!oqP1  
_>ZC;+c?  
/* (non-Javadoc) g)=$zXWhP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O p1TsRm5L  
*/ m#[9F']Z`  
public void sort(int[] data) { P^!g0K  
int temp; 9MH;=88q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $@O?  
} <v/aquLN  
} /:ZwGyT;  
} vKWi?}1  
\Zh&[D!2  
} (E7"GJ  
~`="tzr:  
冒泡排序: 2vU-9p {  
qM+Ai*q  
package org.rut.util.algorithm.support; q%QvBN  
RN|Bk  
import org.rut.util.algorithm.SortUtil; v 2 p  
bRrS d:e  
/** -2!S>P Zs  
* @author treeroot q*5L",  
* @since 2006-2-2 v9FR  
* @version 1.0 6212*Z_Af  
*/ j}d):3!  
public class BubbleSort implements SortUtil.Sort{ ^/$dSXKF  
S=lCzL;j"  
/* (non-Javadoc) cvo+{u$s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tQRbNY#}Z  
*/ Z,/^lg c,  
public void sort(int[] data) { ,X1M!'  
int temp; Lq ;~6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ SvQ|SKE':  
if(data[j] SortUtil.swap(data,j,j-1); _'1 7C /  
} 1h(IrV5g  
} \y%"tJ~N{  
} bcjh3WP  
} $y,KDR7^  
S.Kcb=;"L  
} 1*G&ZI  
1LSJy*yY  
选择排序: }!k?.(hpE  
I4+1P1z  
package org.rut.util.algorithm.support; W1<*9O  
8{!|` b'f  
import org.rut.util.algorithm.SortUtil; fZr{x$]N0  
74:( -vS  
/** V6](_w!  
* @author treeroot E2dS@!]V  
* @since 2006-2-2 Q]GS#n  
* @version 1.0 EtPB_! +  
*/ Q:7P /  
public class SelectionSort implements SortUtil.Sort { V"(5U(v{~  
Ix,b-C~  
/* ?lgE9I]  
* (non-Javadoc) OmZZTeGg1s  
* !KJ X$?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [ ^\{>m7  
*/ U&:-Vf~&  
public void sort(int[] data) { "Dk@-Ac  
int temp; E #Ue9J  
for (int i = 0; i < data.length; i++) { ewN|">WXQ  
int lowIndex = i; 17c`c.yP  
for (int j = data.length - 1; j > i; j--) { %%n&z6w-  
if (data[j] < data[lowIndex]) { UtJfO`m9P  
lowIndex = j; .pe.K3G &  
} Fw(  
} !Sy9v  
SortUtil.swap(data,i,lowIndex); roAHkI  
} |}e"6e%  
} }j1;0kb?  
H(- -hG5}  
} ow 6\j:$?  
!,Gavt7f  
Shell排序: ] s 2ec  
/8`9SS  
package org.rut.util.algorithm.support; --TH6j"  
v,N!cp1  
import org.rut.util.algorithm.SortUtil; rVsCJuxI  
pX>wMc+  
/** w^HI lA  
* @author treeroot X"g,QqDD  
* @since 2006-2-2 H&F2[j$T  
* @version 1.0 v6aMYmenBH  
*/ uQW[2f  
public class ShellSort implements SortUtil.Sort{ K^GvU0\  
>b3IZ^SB#$  
/* (non-Javadoc) F$JA IL{W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 54TWFDmGi  
*/ U:MZN[Cc[  
public void sort(int[] data) { _h=h43'3  
for(int i=data.length/2;i>2;i/=2){ a04S&ezj  
for(int j=0;j insertSort(data,j,i); p((.(fx  
} >[T6/#M  
} T?u*ey~Tv  
insertSort(data,0,1); j `3IizN2  
} tC f@v'1t  
[vY)y\W{  
/** ko!aX;K  
* @param data >2mY%  
* @param j T_)+l)  
* @param i 7A<}JaE!,  
*/ Xe/7rhov  
private void insertSort(int[] data, int start, int inc) { #^i+'Z=L  
int temp; Ja\B%f  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); l>HB0o  
} zn*i  
} \4*i;a.kU  
} t `\l+L  
)5;|mV  
} ;%u)~3B$JK  
[vdC$9z,  
快速排序: Hpp;dG  
_1$+S0G;  
package org.rut.util.algorithm.support; ZhoB/TgdL  
XT==N-5,  
import org.rut.util.algorithm.SortUtil; +#'QP#  
\nVoBW(  
/** bV@5B#] 2R  
* @author treeroot zfml^N  
* @since 2006-2-2 U.W Mu%  
* @version 1.0 a9nXh6  
*/ VN@ZYSs  
public class QuickSort implements SortUtil.Sort{ _j_c&  
+n8,=}  
/* (non-Javadoc) iF+50d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gD6BPW~0  
*/ e=Kr>~q=  
public void sort(int[] data) { =1F F2#zS  
quickSort(data,0,data.length-1); _Q\u-VN*hv  
} !un_JZD  
private void quickSort(int[] data,int i,int j){ K9'AYFse  
int pivotIndex=(i+j)/2; zhwajc  
file://swap ,rQPs  
SortUtil.swap(data,pivotIndex,j); !r0 z3^*N  
s8kkf5bu  
int k=partition(data,i-1,j,data[j]); ds QGj&  
SortUtil.swap(data,k,j); kI$X~s$r  
if((k-i)>1) quickSort(data,i,k-1); |<7nf75c}  
if((j-k)>1) quickSort(data,k+1,j); \hZ9in`YlR  
Yr+ghl/ V  
} 7R om#Kl:  
/** (KG>lTdN  
* @param data *W<g%j-a  
* @param i 3gmu-t v  
* @param j j,JGs[A  
* @return Ibl==Irk  
*/ 1hgmlY`  
private int partition(int[] data, int l, int r,int pivot) { o//PlG~  
do{ *,__\/U98  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )kNyl@m  
SortUtil.swap(data,l,r); NvlG@^&S  
} ag$UNV  
while(l SortUtil.swap(data,l,r); #9Dixsl*Q  
return l; F%QVn .  
} Y3I+TI>x  
1Q$Z'E}SK@  
} D(<20b,  
MA:8g D  
改进后的快速排序: G@QZmuj&KH  
N;\by<snN  
package org.rut.util.algorithm.support; 5 gbJTh<JU  
dPRGL hWF  
import org.rut.util.algorithm.SortUtil; *tT }y(M  
-xf=dzm)  
/** 'rdg  
* @author treeroot O-vvFl#4  
* @since 2006-2-2 l2!4}zI2  
* @version 1.0 8V3SZ17  
*/ %k3a34P@  
public class ImprovedQuickSort implements SortUtil.Sort { l4d2 i;4BK  
cS ;hyLd  
private static int MAX_STACK_SIZE=4096; `+QrgtcEy4  
private static int THRESHOLD=10; rT ~qoA\  
/* (non-Javadoc) l$Y7CIH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~z!U/QR2  
*/ *(x`cf;k  
public void sort(int[] data) {  _D(F[p|  
int[] stack=new int[MAX_STACK_SIZE]; _A \c 6#  
c>r0 N[  
int top=-1; #f@sq5pTO  
int pivot; ^YKEc0"w(  
int pivotIndex,l,r; Rj% q)aw'  
` oYrW0Vm  
stack[++top]=0; mi3yiR  
stack[++top]=data.length-1; m`-{ V<(M  
%c(':vI#  
while(top>0){ y)!K@  
int j=stack[top--]; @K]D :MSS  
int i=stack[top--]; e?G] fz  
V5RfxWtm:  
pivotIndex=(i+j)/2; 0=&Hm).  
pivot=data[pivotIndex]; ueYZM<],  
Ssr P  
SortUtil.swap(data,pivotIndex,j); dGcG7*EX  
h5ST`jZ  
file://partition )}7rM6hv  
l=i-1; $q{-)=-BXQ  
r=j; #tdI;x3  
do{ !["WnF{5eC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Je+z\eT!5<  
SortUtil.swap(data,l,r); C jsy1gA  
} b4s.`%U  
while(l SortUtil.swap(data,l,r); ]Z@- r  
SortUtil.swap(data,l,j); {KE858  
_bn*B$  
if((l-i)>THRESHOLD){ n_hV;  
stack[++top]=i; W :jC2,s!m  
stack[++top]=l-1; < ppg$;  
} vVmoV0kGt  
if((j-l)>THRESHOLD){ _CBG?  
stack[++top]=l+1; TB4|dj-%  
stack[++top]=j; *obBo6!zM  
} ,D3?N2mB  
cRK1JxU  
} o4,W!^ n2  
file://new InsertSort().sort(data); Qq(/TA0$-  
insertSort(data); E=3<F_3W  
} nWfOiw-t  
/** $uF} GP_)  
* @param data S v$%-x^t  
*/ lphQZ{8  
private void insertSort(int[] data) { DDyeN uK  
int temp; (2Z-NVU#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f+j\,LJ  
} 9sifc<za  
} htj:Z:C`  
} (4L XoNT  
BYFvf(>  
} & xo,49`!  
$+!/=8R)  
归并排序: x}$SB%9/  
a.#`>  
package org.rut.util.algorithm.support; Cb5;l~}L  
Stq&^S\x69  
import org.rut.util.algorithm.SortUtil; qR/~a  
DpH+lpC  
/** GSIRZJl  
* @author treeroot oW3j|V  
* @since 2006-2-2 I{U7BZy  
* @version 1.0 m-4P*P$X  
*/ kHygif !I4  
public class MergeSort implements SortUtil.Sort{ FCnOvF65  
V6P2W0 m  
/* (non-Javadoc) zgXg-cr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?55t0  
*/ vg[A/$gLM  
public void sort(int[] data) { $ (/=Wn  
int[] temp=new int[data.length]; 5gYv CW&~  
mergeSort(data,temp,0,data.length-1); v1h\ 6r'  
} #d2XVpO[0  
q#B=PZ'NA  
private void mergeSort(int[] data,int[] temp,int l,int r){ gb+iy$o-  
int mid=(l+r)/2; U{/d dCf7  
if(l==r) return ; @6\Id7`Ea  
mergeSort(data,temp,l,mid); R8|H*5T?+  
mergeSort(data,temp,mid+1,r); ovm109fTx  
for(int i=l;i<=r;i++){ -5vg"|ia,  
temp=data; 5My4a9  
} ]!CMo+  
int i1=l; KUJCkwQ  
int i2=mid+1; )` ~"o*M  
for(int cur=l;cur<=r;cur++){ UMtnb:ek  
if(i1==mid+1) :%G_<VAo!  
data[cur]=temp[i2++]; rlxZ,]ul  
else if(i2>r) m1bkY#\ U|  
data[cur]=temp[i1++]; FQY{[QvF~  
else if(temp[i1] data[cur]=temp[i1++]; t5O '7x  
else AXnRA W  
data[cur]=temp[i2++]; ^m0nInH  
} BoJpf8e'-e  
} ;]v{3m  
dfy]w4ETB  
} 2<$pai"yl  
2{U5*\FhVX  
改进后的归并排序: r2ZSkP.  
XLHi  
package org.rut.util.algorithm.support; we:P_\6  
`JQw]\f4>  
import org.rut.util.algorithm.SortUtil; 1t+uMhy*y  
V.w L  
/** l,fwF ua  
* @author treeroot 3+[;  
* @since 2006-2-2 ;Mw<{X-  
* @version 1.0 <C1w?d$9I  
*/ 6JgbJbUi  
public class ImprovedMergeSort implements SortUtil.Sort { t,NE`LC  
G*s5GG@Z.  
private static final int THRESHOLD = 10; d+qeZGg^A  
xig4H7V  
/* J]W? V vv  
* (non-Javadoc) vzX%x ul  
* xs 1V?0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U8S<wf&  
*/ Cl6P,C  
public void sort(int[] data) { @[LM8 @:  
int[] temp=new int[data.length]; ^O.` P  
mergeSort(data,temp,0,data.length-1); _ <Ip0?N  
} Sq ]VtQ(  
t5CJG'!ql  
private void mergeSort(int[] data, int[] temp, int l, int r) { <=~*`eWV  
int i, j, k; @Os0A  
int mid = (l + r) / 2; g& ou[_A  
if (l == r) f4O}WU}l{s  
return; '7<^x>D|  
if ((mid - l) >= THRESHOLD) Xv+!) j<  
mergeSort(data, temp, l, mid); Ts\PZQ!q  
else `*o ko[\3  
insertSort(data, l, mid - l + 1); ,\ -4X  
if ((r - mid) > THRESHOLD) 5d;(D i5z  
mergeSort(data, temp, mid + 1, r); Z*R~dHr   
else 8UzF*gS  
insertSort(data, mid + 1, r - mid); ~ #jnkD  
c8N pk<  
for (i = l; i <= mid; i++) { !<&To  
temp = data; ~\*wt(o  
} *:% I|5  
for (j = 1; j <= r - mid; j++) { RDU 'l^  
temp[r - j + 1] = data[j + mid]; Sim$:5P  
} 33ZHrZ  
int a = temp[l]; HHerL%/   
int b = temp[r]; B qo#cnlG  
for (i = l, j = r, k = l; k <= r; k++) { i# fvF)  
if (a < b) { l1.eAs5U  
data[k] = temp[i++]; ?pdN!zOeL  
a = temp; TtrV -X>L  
} else { B1j^qoC.5  
data[k] = temp[j--]; )8taMC:H^  
b = temp[j]; | 2GrOM&S  
} z%]3`_I  
} , {}S<^?]  
} Uw?25+[b  
2J Wp5  
/** *'BI=* `  
* @param data )h]tKYx  
* @param l b)>l7nOc  
* @param i M<x><U#]A  
*/ *&5./WEOH  
private void insertSort(int[] data, int start, int len) { [U$`nnp  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &Z}}9dd  
} (SCZ.G(>  
} qP+%ui5xR  
} + jN)$Y3Ya  
} Y3ypca&P9  
ivSpi?   
堆排序: _QtW)\)5 \  
a ~k*Gd(  
package org.rut.util.algorithm.support; .B! L+M< [  
fG<[zt\e  
import org.rut.util.algorithm.SortUtil; )"Wy/P  
U4lAo  
/** J=H8^4M  
* @author treeroot PkOtg[Z  
* @since 2006-2-2 &!*p>Ns)e  
* @version 1.0 e63io0g>  
*/ m~@Lt~LZs  
public class HeapSort implements SortUtil.Sort{ OYOczb]  
B~3qEdoK5`  
/* (non-Javadoc) RRtOBrIedI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ut(BQM>U+$  
*/ V^\b"1X7N  
public void sort(int[] data) { ]Gl5Qf:+z  
MaxHeap h=new MaxHeap(); gT|&tTS1@  
h.init(data); ]2z Gb5s"  
for(int i=0;i h.remove();  rjHW  
System.arraycopy(h.queue,1,data,0,data.length); %"3tGi:/  
} <$ %Y#I'zX  
I -XkxDw  
private static class MaxHeap{ 7D4I>N'T  
VjSA& R  
void init(int[] data){ Y2>*' nU  
this.queue=new int[data.length+1]; ibgF,N  
for(int i=0;i queue[++size]=data; ^p~3H  
fixUp(size); 8 =3$U+  
} z"!=A}i  
} (XQl2C  
%U$%x  
private int size=0; Z15b'^)?9  
t<qXXQ&5  
private int[] queue; T) cbpkH4  
}}v28"\TA  
public int get() { ld'Aaxl&  
return queue[1]; ^^(4xHN  
} YfH+kDT  
SVT'fPm1M  
public void remove() { f>+:UGmP  
SortUtil.swap(queue,1,size--); u=B,i#>s  
fixDown(1); [M:BJ%*  
} K9UWyM<(2C  
file://fixdown _+nlm5  
private void fixDown(int k) { tP/R9Ezp  
int j;  TGozoPV  
while ((j = k << 1) <= size) { 96CC5  
if (j < size %26amp;%26amp; queue[j] j++; L3X[; |v}  
if (queue[k]>queue[j]) file://不用交换 RkBbu4uQ-  
break; n5 jzVv  
SortUtil.swap(queue,j,k); Gw Z(3  
k = j; wz 5*?[4  
} @&]%%o+  
} r1X\$&  
private void fixUp(int k) { J9/}ZD^  
while (k > 1) { 54, (;  
int j = k >> 1; L-(.v*  
if (queue[j]>queue[k]) V$<5`  
break; R>. %0%iq  
SortUtil.swap(queue,j,k); J;7O`5J  
k = j; 2M+'9 +k~  
} [0mg\n?  
} E 14Dq#L  
/ L/hR4  
} xA2 "i2k9  
GFBku^pi  
} V3$Yr"rZ;  
`>cBR,)r  
SortUtil: Ox1#}7`0>  
)R'~{;z }  
package org.rut.util.algorithm; :;]iUjiC8  
m dTCe HX  
import org.rut.util.algorithm.support.BubbleSort; \4OX]{  
import org.rut.util.algorithm.support.HeapSort; * "Z5bKL  
import org.rut.util.algorithm.support.ImprovedMergeSort; UMbM3m=\  
import org.rut.util.algorithm.support.ImprovedQuickSort; $.2#G"|  
import org.rut.util.algorithm.support.InsertSort; qKg*/)sD(  
import org.rut.util.algorithm.support.MergeSort; I ;Sm<P7*  
import org.rut.util.algorithm.support.QuickSort; jRP9e  
import org.rut.util.algorithm.support.SelectionSort; P6ztP$M(  
import org.rut.util.algorithm.support.ShellSort; B#T4m]E/  
/!mF,oR!  
/** aqk0+  
* @author treeroot ?@i_\<A2  
* @since 2006-2-2 vC9Qe ]f  
* @version 1.0 54%@q[-  
*/ 3b2[i,m<L  
public class SortUtil { i/%+x-#  
public final static int INSERT = 1; M3U*'A\  
public final static int BUBBLE = 2; j:;[Y`2  
public final static int SELECTION = 3; eJ JD'Z  
public final static int SHELL = 4; jr<`@  
public final static int QUICK = 5; MM*B.y~TxZ  
public final static int IMPROVED_QUICK = 6; aI l}|n"  
public final static int MERGE = 7; D 1Q@4  g  
public final static int IMPROVED_MERGE = 8; ^"e|)4_5\  
public final static int HEAP = 9; ^T#bla893  
 ju-tx :  
public static void sort(int[] data) { -<[MM2Y  
sort(data, IMPROVED_QUICK);  Ip0~  
} ?W*{% my  
private static String[] name={ +EZ Lic  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -r6cK,WVU  
}; :4f>S) m  
Cz%tk}2  
private static Sort[] impl=new Sort[]{ _qq> 43  
new InsertSort(), -.>b7ui  
new BubbleSort(), Z-fQ{&a{  
new SelectionSort(), avmuI^LLs  
new ShellSort(), fZqqU|tq  
new QuickSort(), LX [_6  
new ImprovedQuickSort(), s\k4<d5  
new MergeSort(), =z5'A|Wa=,  
new ImprovedMergeSort(), OO Hw-MW  
new HeapSort() R aVOZ=^-  
}; !\ IgTt,  
7hs1S|  
public static String toString(int algorithm){ []'gIF  
return name[algorithm-1]; eDh]uKg  
} 2qw-:  
JumZ>\'p(  
public static void sort(int[] data, int algorithm) { 3C,G~)= x  
impl[algorithm-1].sort(data); s#%$aQ|Fp  
} 6zmt^U   
0W92Z@_GY  
public static interface Sort { e7m>p\"  
public void sort(int[] data); L\cd=&b`  
} Wchu-]  
F;4*,Ap  
public static void swap(int[] data, int i, int j) { 6zo'w Wc3  
int temp = data; S>-x<'Os  
data = data[j]; RZ(*%b<C  
data[j] = temp; {XHAQ9'  
} XX85]49`%  
} WrA!'I  
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