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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。 o0'!u  
插入排序: $D)Ajd;  
 *c6o#[l  
package org.rut.util.algorithm.support; 4]18=?r>  
1fzHmD  
import org.rut.util.algorithm.SortUtil; 3.?kxac  
/** qoXncdDHZ  
* @author treeroot c;dMXv   
* @since 2006-2-2 n6Qsug$z  
* @version 1.0 t/TWLhx/  
*/ 1SGLA"r  
public class InsertSort implements SortUtil.Sort{ swh8-_[c/  
o6[aP[~F  
/* (non-Javadoc) z[`O YwsW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3pF7} P  
*/ ~l@ h  
public void sort(int[] data) { ?' :v): J}  
int temp; 7} 2Aq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q'B2!9=LB  
} _^5OoE"}!  
} 5m]N%{<jAB  
} @jxAU7!  
tr t^o  
} muJR~4  
DZ7<-SFU  
冒泡排序: [, )G\  
v?=y9lEH@%  
package org.rut.util.algorithm.support; t0*,%ge:<  
J )DFH~p  
import org.rut.util.algorithm.SortUtil; Jb (CH4|7  
bk}'wcX<+]  
/** 8$TSQ~  
* @author treeroot zv8AvNDK  
* @since 2006-2-2 ^.|P&f~  
* @version 1.0 ac%6eW0#  
*/ y k{8O.g  
public class BubbleSort implements SortUtil.Sort{ fZ5zsm'N  
OD O'!T-  
/* (non-Javadoc) +\_c*'K>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9z$fDs}.q  
*/ j*' +f~ A  
public void sort(int[] data) { T{:~v+I=  
int temp; \QvoL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .;$Ub[  
if(data[j] SortUtil.swap(data,j,j-1); CVt:tV  
} ' %&gER  
} cM hBOm*  
} rn9n_)  
} fFYfb4o  
 J^V}%N".  
} a-bj! Rs  
x=M%QFe  
选择排序: 6D&{+;  
|Fi{]9(G2  
package org.rut.util.algorithm.support; SYE+A`a  
(xdC'@&  
import org.rut.util.algorithm.SortUtil; @y!oKF  
.US=fWyrb  
/** I?&/J4o:  
* @author treeroot 4'wbtE|  
* @since 2006-2-2 1)o6jGQ  
* @version 1.0 :*} -,{uX  
*/ ?yc{@|  
public class SelectionSort implements SortUtil.Sort { uo8[,'  
0H/)wy2ym  
/* ('k9XcTPP  
* (non-Javadoc) ak A7))Q  
* +6`+Q2qi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J6I:UML  
*/ KcvstC`  
public void sort(int[] data) { `+m:@0&L  
int temp; 4`GOBX1b.y  
for (int i = 0; i < data.length; i++) { xwF mY'o  
int lowIndex = i; ({OQ JBC  
for (int j = data.length - 1; j > i; j--) { @9tzk [  
if (data[j] < data[lowIndex]) { w7@TM%nS  
lowIndex = j; vc0LV'lmg  
} ~ \]?5 nj  
} ZXIw^!8@/  
SortUtil.swap(data,i,lowIndex); RY .@_{  
} g\% Z+Dc  
} "g,`Ks ];  
Z%Fc -KVt  
} o(k{Ed  
"ze-Mb  
Shell排序: r3B}d*v  
UCt}\IJ  
package org.rut.util.algorithm.support; #CV]S4/^  
Vel}lQD  
import org.rut.util.algorithm.SortUtil; V3>tW,z  
f{.4# C'  
/** 3K=%I+G(4  
* @author treeroot p|C[T]J\@  
* @since 2006-2-2 D 5bPF~q  
* @version 1.0 Fw S>V2R  
*/ :sQ>oNnz  
public class ShellSort implements SortUtil.Sort{ lA pZC6Iwk  
kH5D%`Kw  
/* (non-Javadoc) 84WX I#BH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )q66^% ;S  
*/ \h"U+Bv7  
public void sort(int[] data) { 6w=`0r3hy  
for(int i=data.length/2;i>2;i/=2){ NS65F7<&  
for(int j=0;j insertSort(data,j,i); %q}[ZD/HD  
} * bd3^mP  
} Khb Ku0Z  
insertSort(data,0,1); g)5mr:\  
} sH.=Faos  
oOLey!uZw  
/** *a\6X( ~  
* @param data -p>~z )  
* @param j y^"@$   
* @param i S=0DQ19  
*/ L R\LC6kM  
private void insertSort(int[] data, int start, int inc) { RC/45:hZZ  
int temp; lxm/*^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); nTv}/M&  
} $&=xw _  
} Q6W![571;  
} 6Cz O ztn  
(Vr%4Z8  
} r\d(*q3B  
> 1(J  
快速排序: lH;V9D^  
"(3u)o9  
package org.rut.util.algorithm.support; (-g*U#   
a%e`  
import org.rut.util.algorithm.SortUtil; jM&di  
veHe   
/** #R{>@]x`  
* @author treeroot K Ax=C}9  
* @since 2006-2-2 .07`nIs"  
* @version 1.0 o]~\u{o#.  
*/ X%+lgm+  
public class QuickSort implements SortUtil.Sort{ g"Y _!)X  
:{#O   
/* (non-Javadoc) G.H8 ><%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {$,\Qg  
*/ P+0'^:J  
public void sort(int[] data) { ~g\~x  
quickSort(data,0,data.length-1); ly-(F2  
} F)(^c  
private void quickSort(int[] data,int i,int j){ {YgU23;q  
int pivotIndex=(i+j)/2; u MEM7$o  
file://swap Wk<fNHg  
SortUtil.swap(data,pivotIndex,j); g5|~ i{"0  
RbX9PF"|+  
int k=partition(data,i-1,j,data[j]); %+H_V1F  
SortUtil.swap(data,k,j); R(d<PlZ  
if((k-i)>1) quickSort(data,i,k-1); `UTPX'Vz  
if((j-k)>1) quickSort(data,k+1,j); :YI5O/gsk?  
x-m*p^}  
} UPI- j#yc  
/** ~=*o  
* @param data tL$,]I$1+  
* @param i lN#j%0MaUo  
* @param j =P]Z"Ok  
* @return 68XJ`/d  
*/ M bWby'  
private int partition(int[] data, int l, int r,int pivot) { b^VRpv  
do{ J, -.5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [,;e ,ld  
SortUtil.swap(data,l,r); !+%gJiu:  
} . vb##D  
while(l SortUtil.swap(data,l,r); P |t yyjO  
return l; rx2)uUbR  
} hSm?Z!+  
'F d+1 3  
} ^eh.Iml'@  
d}\]!x3t  
改进后的快速排序: MY,~leP&  
:C*}Yg  
package org.rut.util.algorithm.support; L5bq\  
iT}>a30]B  
import org.rut.util.algorithm.SortUtil; x/DV>Nfn  
,~Mf2Y#m0p  
/** = LNU%0m  
* @author treeroot -D~K9u]U_  
* @since 2006-2-2 DyN[Yp|V  
* @version 1.0 $|=| "/  
*/ SE+hB  
public class ImprovedQuickSort implements SortUtil.Sort { 9^XZ|`  
.dU91> ~Ov  
private static int MAX_STACK_SIZE=4096; O2Qmz=%  
private static int THRESHOLD=10; "z{/*uM2<  
/* (non-Javadoc) EHwb?{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I _KHQ&Z*  
*/ N;3!oo4  
public void sort(int[] data) { Mt4  
int[] stack=new int[MAX_STACK_SIZE]; juR>4SH  
rRRh-%.RU  
int top=-1; z\m$>C|  
int pivot; R4'.QZ-x  
int pivotIndex,l,r; v#?DWeaFS_  
;\7`G!q  
stack[++top]=0; @rYZ0`E9  
stack[++top]=data.length-1; l$gJ^Wf2gY  
!igPyhi,hl  
while(top>0){ E{T3Xwg  
int j=stack[top--]; v@{y}  
int i=stack[top--]; g=\(%zfsxr  
[)I^v3]U  
pivotIndex=(i+j)/2; -dM~3'  
pivot=data[pivotIndex]; HIc;Lc8$  
?Z{/0X)]|  
SortUtil.swap(data,pivotIndex,j); 8'Q+%{?1t  
>V^8<^?G  
file://partition .4a|^ vT  
l=i-1; JPDxzp  
r=j; NOTG|\{  
do{ WfO EI1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X?haHM#]  
SortUtil.swap(data,l,r); sccLP_#Z  
} j0L%jz  
while(l SortUtil.swap(data,l,r); aG7Lm2{c"  
SortUtil.swap(data,l,j); xQZOGq  
":eyf 3M  
if((l-i)>THRESHOLD){ e)H FI|>  
stack[++top]=i; D\G 8p;  
stack[++top]=l-1; @g[ijs\  
} YHN6/k7H  
if((j-l)>THRESHOLD){ Xn"#Zy_  
stack[++top]=l+1; iYLg[J"  
stack[++top]=j; OFo hyy(  
} 7oE:]  
yFAUD ro  
} bD v& ;Z  
file://new InsertSort().sort(data); bzG vnaTt  
insertSort(data); |Gq3pL<jkC  
} W(qK?"s2  
/** 0Y0z7A:  
* @param data 9+(b7L   
*/ /*g0M2+OZo  
private void insertSort(int[] data) { :LuA6  
int temp; 7 :\J2$P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jXx~ 5  
} T7qp ({v?Q  
} C,ldi"|  
} x6aVNH=  
E7$ aT^  
} {U9{*e$=  
&x (D%+  
归并排序: [?6+ r  
+ $M<ck?Bo  
package org.rut.util.algorithm.support; 0]ai*\,W7~  
y@}WxSK*0  
import org.rut.util.algorithm.SortUtil; 1&h\\&ic  
QfjoHeG7  
/** t^bh2 $J  
* @author treeroot Z{u]qI{l  
* @since 2006-2-2 di;~$rI!?  
* @version 1.0 N/C$8D34  
*/ ybf,pDY#f  
public class MergeSort implements SortUtil.Sort{ ht\_YiDg3  
 <}^p5|  
/* (non-Javadoc) dM"5obEb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P/S,dhs(  
*/ VaonG]Ues  
public void sort(int[] data) { 9QD+  
int[] temp=new int[data.length]; U*EBH  
mergeSort(data,temp,0,data.length-1); ~- aUw}U  
} E?&YcVA  
L{ej<0yr  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7#HSe#0J  
int mid=(l+r)/2; W T @XHwt  
if(l==r) return ; x[&)\[t  
mergeSort(data,temp,l,mid); \"I418T K  
mergeSort(data,temp,mid+1,r); z3^gufOkQ  
for(int i=l;i<=r;i++){ p;%5o0{1  
temp=data; h1Y^+A_  
} Qp@}v7Due  
int i1=l; %U[H`E  
int i2=mid+1; 6 {`J I  
for(int cur=l;cur<=r;cur++){ ZP:+'\&J  
if(i1==mid+1) }Oe4wEYN)  
data[cur]=temp[i2++]; >kuu\  
else if(i2>r) DLq'V.M:  
data[cur]=temp[i1++]; 3#uc+$[  
else if(temp[i1] data[cur]=temp[i1++]; 1vh[sKv9%  
else G[d]t$f=  
data[cur]=temp[i2++]; N7q6pBA"E  
} V\c`O  
} ubKp P%Z  
-LFk7a  
} 6/0bis H  
9+Wf*:*EW  
改进后的归并排序: Tj2pEOu  
3z k},8fu  
package org.rut.util.algorithm.support; r.]IGE|  
_GoFwVO  
import org.rut.util.algorithm.SortUtil; j\@&poJ(,  
hBDmC_\~  
/** O^~nf%  
* @author treeroot ] < ;y_  
* @since 2006-2-2 WQ{^+C9g'1  
* @version 1.0 02[*b  
*/ )ItW}1[I  
public class ImprovedMergeSort implements SortUtil.Sort { ayg^js2,  
4`sW_ ks  
private static final int THRESHOLD = 10; tt&{f <*  
wO]H+t  
/* 4^^=^c  
* (non-Javadoc) ,W$&OD  
* R$2\Xl@qQF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1_mqPMm  
*/ GCrsf  
public void sort(int[] data) { h.xtkD)Y~  
int[] temp=new int[data.length]; N.V5>2  
mergeSort(data,temp,0,data.length-1); <. V*]g/;  
} +^$E)Ol  
7#P Q1UWl  
private void mergeSort(int[] data, int[] temp, int l, int r) { =|V#~p*  
int i, j, k; "Qk)EY  
int mid = (l + r) / 2; IRsyy\[kp8  
if (l == r) dFk$rr>q  
return; .aC/ g?U  
if ((mid - l) >= THRESHOLD) d-I&--"ju  
mergeSort(data, temp, l, mid); ;(Z9.  
else T9YrB  
insertSort(data, l, mid - l + 1); F{eI[A  
if ((r - mid) > THRESHOLD) Dd:48sN:Jq  
mergeSort(data, temp, mid + 1, r); FD8d-G  
else =]LAL w  
insertSort(data, mid + 1, r - mid); *3(mNpi{_  
=GC,1WVEqV  
for (i = l; i <= mid; i++) { xQxq33\  
temp = data; 5C5OLAl v  
} V+$fh2t  
for (j = 1; j <= r - mid; j++) { /!pJ"@  
temp[r - j + 1] = data[j + mid]; =AX"'q  
} I$ ?.9&.&  
int a = temp[l]; GjX6noqT  
int b = temp[r]; B# o6UO\  
for (i = l, j = r, k = l; k <= r; k++) { Ime"}*9  
if (a < b) { Eu[/* t+l  
data[k] = temp[i++]; w u0q.]  
a = temp; $AdBX}{  
} else { T:*l+<?  
data[k] = temp[j--]; [`!%u3  
b = temp[j]; ` c"  
} sc y_  
} 7DWGYvv[  
} ,Y7QmbX^  
#1p\\Av  
/** C/q!!  
* @param data 5i=C?W`'  
* @param l pzeCdHF  
* @param i /1b7f'  
*/ a[E}o<{  
private void insertSort(int[] data, int start, int len) { 1YtK+,mz  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); L fZF  
} C40o_1g  
} ]&X}C{v)G  
} |u+!CR  
} /z: mi  
Dv~jVIXu  
堆排序: W@D./Th  
yV*4|EkvW  
package org.rut.util.algorithm.support; $t0JfDd6Ky  
. Gb!mG  
import org.rut.util.algorithm.SortUtil; &mm!UJ  
x7/";L>  
/** Cl!9/l?z  
* @author treeroot a`>H69(bU  
* @since 2006-2-2 ;*WG9Y(W  
* @version 1.0 I8uFMP  
*/ e/}4Pt  
public class HeapSort implements SortUtil.Sort{ } g%v<'K  
&_74h);2I:  
/* (non-Javadoc) - B?c F9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e9>~mtx  
*/ DKF '*  
public void sort(int[] data) { w1 eFm:'  
MaxHeap h=new MaxHeap(); 'UM *7  
h.init(data); G=|~SYz  
for(int i=0;i h.remove(); Os KtxtLO  
System.arraycopy(h.queue,1,data,0,data.length); 13+. >  
} `@#rAW D  
/i#";~sO  
private static class MaxHeap{ ',/2J0_  
{(I":rt#  
void init(int[] data){ tHK>w%|\R  
this.queue=new int[data.length+1]; Pb sxjP  
for(int i=0;i queue[++size]=data; tS-gaT`T  
fixUp(size); l]OzE-*$b  
} ,e$6%R  
} ij;P5OA  
^b.#4i (v  
private int size=0; AREjS $  
bc3`x1)\^  
private int[] queue; +wf9!_'  
[bRE=Zr$Ry  
public int get() { ~S\> F\v6'  
return queue[1]; u1=K#5^  
} hCS}  
MdmN7>  
public void remove() { 3R0ioi 7  
SortUtil.swap(queue,1,size--); V1~@   
fixDown(1); W/AF  
} </u=<^ire  
file://fixdown "c|Rpzs[  
private void fixDown(int k) { ,Vw>3|C  
int j; x0WinLQ  
while ((j = k << 1) <= size) { ZvMU3])u  
if (j < size %26amp;%26amp; queue[j] j++; /(.:l +[w[  
if (queue[k]>queue[j]) file://不用交换 |Wjpnz  
break; aYDo0?kF'  
SortUtil.swap(queue,j,k); zo8D"  
k = j; 6)7cw8^  
} P=_fYA3  
} E&eY79  
private void fixUp(int k) { ,Aai-AGG@  
while (k > 1) { m uy^>2p  
int j = k >> 1; n,2   
if (queue[j]>queue[k]) {/H<_  
break; Gx6%Z$2n  
SortUtil.swap(queue,j,k); &*%x]fQ@  
k = j; Jv+w{"&  
} g,rmGu3v  
} 9@yF7  
RB4 +"QUh  
} t ^[fu,  
XbB(<\0+  
} ;o9ixmT<-o  
>6HGh#0(p  
SortUtil: &9fQW?Czs  
e6Y>Bk   
package org.rut.util.algorithm; w.a9}GC  
y<E]; ub  
import org.rut.util.algorithm.support.BubbleSort; -(]C FnD_N  
import org.rut.util.algorithm.support.HeapSort; _io'8X2K%  
import org.rut.util.algorithm.support.ImprovedMergeSort; G(TFv\`vH  
import org.rut.util.algorithm.support.ImprovedQuickSort; U/^#nU.,  
import org.rut.util.algorithm.support.InsertSort; )38%E;T{X  
import org.rut.util.algorithm.support.MergeSort; .Zv~a&GE  
import org.rut.util.algorithm.support.QuickSort; }`g-eF >p  
import org.rut.util.algorithm.support.SelectionSort; M{{kO@P"9  
import org.rut.util.algorithm.support.ShellSort; L_RVHvA=M/  
;=jF9mV.  
/** 9`*Eeb>  
* @author treeroot <Q\KS  
* @since 2006-2-2 ekL;SN  
* @version 1.0 nOvR, 6  
*/ d \l{tmte  
public class SortUtil { M|mfkIk0MB  
public final static int INSERT = 1; '<BLkr# @  
public final static int BUBBLE = 2; C2"^YRN,  
public final static int SELECTION = 3; }7[]d7  
public final static int SHELL = 4; 1+uZF  
public final static int QUICK = 5; kpIn_Ea  
public final static int IMPROVED_QUICK = 6; C$TU TS  
public final static int MERGE = 7; H.ksI;,  
public final static int IMPROVED_MERGE = 8; A}(]J!rc  
public final static int HEAP = 9; 1 >j,v+  
k`8O/J  
public static void sort(int[] data) { *VsVCUCz5*  
sort(data, IMPROVED_QUICK); kt2_WW[  
} L AasmQ  
private static String[] name={ OW4j!W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5 ix*wu`,  
}; U 5J _Y  
*v+l,z4n  
private static Sort[] impl=new Sort[]{ &/]en|f"  
new InsertSort(), 6I +0@,I  
new BubbleSort(), S > ~f.   
new SelectionSort(), J&>@ >47  
new ShellSort(), LBCH7@V1yR  
new QuickSort(), GHcx@||C?  
new ImprovedQuickSort(), ZyUcL_   
new MergeSort(), ='o3<}  
new ImprovedMergeSort(), i"0Bc{cQ  
new HeapSort() MF4 (  
}; FpRYffT 9u  
PlzM`g$A  
public static String toString(int algorithm){ K>$f#^  
return name[algorithm-1]; P[ :_"4U  
} ls^Z"9P  
1RYrUg"s"  
public static void sort(int[] data, int algorithm) { <bzzbR[F  
impl[algorithm-1].sort(data); UPuoIfuqI  
} kL*P 3 0  
?IVJ#6[  
public static interface Sort { kP ]Up&'  
public void sort(int[] data); 'ztOl`I5V  
} =9jK\ T^  
;t{q]"? W  
public static void swap(int[] data, int i, int j) { q*&R&K;q  
int temp = data; '[{<a Eo  
data = data[j]; H{*D c_  
data[j] = temp; D!rPF)K )  
} y!#-[K:  
} '>"{yi-  
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