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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。 R2t5T-8`c  
插入排序: $Wb"X=}tl  
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package org.rut.util.algorithm.support; hof ZpM  
9:YiLoz?  
import org.rut.util.algorithm.SortUtil; d t0?4 d  
/** p~+)!Z#  
* @author treeroot p0'A\@|  
* @since 2006-2-2 vpOzF>O  
* @version 1.0 [<f\+g2ct  
*/ a.wRJ  
public class InsertSort implements SortUtil.Sort{ mY;Y$fz;xL  
b_\aSEaTT  
/* (non-Javadoc) (j}"1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ou8@7S  
*/ 0I~xD9l9  
public void sort(int[] data) { x:@HtTX  
int temp; F/&Z1G.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ",`fGu )  
} y\r8_rBo  
} jIAl7aoY  
} 3H@TvV/;f  
@ZD1HA,h"  
} S-'iOJ 1]  
0(:"q!h  
冒泡排序: />K$_T/]  
&[qL l  
package org.rut.util.algorithm.support; bWUo(B#*I  
c%Kv"Z%f  
import org.rut.util.algorithm.SortUtil; m3P%E8<Q#  
$&k zix  
/** vL\wA_z"<H  
* @author treeroot XSn^$$S  
* @since 2006-2-2 GfL}f9  
* @version 1.0 r$R(4q:  
*/ (Dq3e9fX  
public class BubbleSort implements SortUtil.Sort{ Dr,{V6^  
QjF.U8  
/* (non-Javadoc) kJHUaXM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $*L@y m  
*/ J3y5R1?EP  
public void sort(int[] data) { d!e$BiC  
int temp; yxLGseD  
for(int i=0;i for(int j=data.length-1;j>i;j--){ KzI$GU3  
if(data[j] SortUtil.swap(data,j,j-1); )bw^!w)  
} q ( H^H  
} 9'td}S  
} &hyr""NkAm  
} Y -o*d@  
m:II<tv  
} 5JIa?i>B  
VO#]IXaP  
选择排序: K=+w,H# `C  
GkaIqBS  
package org.rut.util.algorithm.support; X2q$i  
@M:j~  
import org.rut.util.algorithm.SortUtil; {$oZR" MP  
(9fqUbG  
/** u+z$+[lm!G  
* @author treeroot +%$!sp?  
* @since 2006-2-2 m"X0Owx  
* @version 1.0 :}o0Eb  
*/ uTBls8  
public class SelectionSort implements SortUtil.Sort { a?M<r>  
o^d(mJZ.F~  
/* }g5h"N\$o  
* (non-Javadoc) o24` 5Jdh  
* X.%Xi'H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y3c]zDjV  
*/ .oN<c]iqE  
public void sort(int[] data) { .kBi" p&  
int temp; hTf]t  
for (int i = 0; i < data.length; i++) { <;SQ1^N  
int lowIndex = i; l4|bpR Cp  
for (int j = data.length - 1; j > i; j--) { Uj1^?d+b  
if (data[j] < data[lowIndex]) { dB^J}_wp  
lowIndex = j; W^60BZ  
} n"(n*Hf7b  
} .LN&EfMenF  
SortUtil.swap(data,i,lowIndex); +, p  
} L8T T54fM  
} u}qfwVX Z  
Uk6Y6mU V  
} 91jv=>=DM  
P/,7CfyPd  
Shell排序: ;BejFcb  
?U iwr{Q  
package org.rut.util.algorithm.support; `-qSvjX  
8!4=j  
import org.rut.util.algorithm.SortUtil; K3!|k(jt  
XDz![s  
/** TM[Z~n(wt  
* @author treeroot Ep.,2H  
* @since 2006-2-2 #xm<|s   
* @version 1.0 Cdot l$'  
*/ D0us<9q  
public class ShellSort implements SortUtil.Sort{ =@G#c5H*  
bhnm<RZ  
/* (non-Javadoc) m:/nw,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) It(8s)5  
*/ )PB&w%J  
public void sort(int[] data) { J<>z}L{  
for(int i=data.length/2;i>2;i/=2){ QE=Cum  
for(int j=0;j insertSort(data,j,i); *{)[:;  
} E)NH6 ~  
} B`T|M$Ug  
insertSort(data,0,1); t A\N$  
} k2j:s}RHY  
Gx y>aS3  
/** t \Fc <  
* @param data nxA]EFS  
* @param j FOM~Uj  
* @param i @HMt}zD  
*/ Kg~<h B6  
private void insertSort(int[] data, int start, int inc) { rcF;Lp :  
int temp; 3k5Mty  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bxqXFy/I  
} F2AM/m^!q  
} {ylc 2 1  
} J,4]d u$  
|.*),t3 (w  
} pvDr&n9  
HJ !)D~M{  
快速排序: zVGjXuNa  
42Tjbten_u  
package org.rut.util.algorithm.support; zi:GvTG  
!5? #^q  
import org.rut.util.algorithm.SortUtil; U@ALo  
i>7f9D7  
/** N+"Y@X yg  
* @author treeroot JihI1C  
* @since 2006-2-2 [I4K`>|Z  
* @version 1.0 V/"XC3/n*  
*/ ^h1VCyoR*  
public class QuickSort implements SortUtil.Sort{ InH R> ,  
7 I&7YhFI  
/* (non-Javadoc) 4CW/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oZA|IF8U0  
*/ Gyjx:EM  
public void sort(int[] data) { F$ZWQ9&5U0  
quickSort(data,0,data.length-1); "SNsOf  
} o~NeS|a  
private void quickSort(int[] data,int i,int j){ HdJLD+k/  
int pivotIndex=(i+j)/2; KQJn\#>  
file://swap UacN'Rat  
SortUtil.swap(data,pivotIndex,j); 69dFd!G\  
v@XQ)95]F  
int k=partition(data,i-1,j,data[j]); oeDsJ6;  
SortUtil.swap(data,k,j); JAC W#'4hV  
if((k-i)>1) quickSort(data,i,k-1); CbQ@l@d]  
if((j-k)>1) quickSort(data,k+1,j); OV7vwj/-  
n{r+t=X  
} Zj<oh8  
/** p0qQ(  
* @param data L}XERO TR  
* @param i "<v_fF<Y  
* @param j d#ya"e>  
* @return "2HRuqf  
*/ .x(&-  
private int partition(int[] data, int l, int r,int pivot) { [l- zU}u&v  
do{ ` eND3c  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6lT1X)  
SortUtil.swap(data,l,r); yx{Ac|<mR  
} UciWrwE  
while(l SortUtil.swap(data,l,r); CV]PCq!  
return l; `DG6ollp{  
} )N)ziAy}  
+(/XMx}a  
} smIZ:L %  
"sAR< 5b  
改进后的快速排序: thipfS  
%f6l"~y  
package org.rut.util.algorithm.support; w?jmi~6  
 7z<!2  
import org.rut.util.algorithm.SortUtil; /nv1 .c)k  
reu[}k~  
/** [O"i!AQ  
* @author treeroot 2O<S ig=  
* @since 2006-2-2 )P|%=laE8  
* @version 1.0 >z>UtT:  
*/ Mky$#SI11  
public class ImprovedQuickSort implements SortUtil.Sort { ;f= :~go  
.7ahz8v  
private static int MAX_STACK_SIZE=4096; u+I-!3J87  
private static int THRESHOLD=10; /D1Bf:'(  
/* (non-Javadoc) gW/H#T,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,=$yvZs4[]  
*/ _\@i&3hkx  
public void sort(int[] data) { d2.n^Q"?3  
int[] stack=new int[MAX_STACK_SIZE]; "{z9 L+  
`3pe\s  
int top=-1; j@GMZz<  
int pivot; m9#u. Q*  
int pivotIndex,l,r; g+ 2SB5 2D  
RVI],O  
stack[++top]=0; :&?#~NFH  
stack[++top]=data.length-1; D1o 8Wo  
?z:xQ*#X  
while(top>0){ k\ I$ve"*  
int j=stack[top--]; "MoV*U2s,  
int i=stack[top--]; "5{Yn!-:  
LTzf&TZbx5  
pivotIndex=(i+j)/2; <RGRvv  
pivot=data[pivotIndex]; DOhXb  
)z/j5tnvm  
SortUtil.swap(data,pivotIndex,j); +S;8=lzuV  
s3J T1TX  
file://partition d57(#)`  
l=i-1; m G?a)P  
r=j; }Q\yem  
do{ WCR+ZXI?1  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); elKQge  
SortUtil.swap(data,l,r); nJ*NI)  
} /jj!DO#  
while(l SortUtil.swap(data,l,r); _x UhDu%  
SortUtil.swap(data,l,j); oC4rL\d{  
(/k,q  
if((l-i)>THRESHOLD){ (]7@0d88  
stack[++top]=i; ,P auP~L  
stack[++top]=l-1; NA/+bgyuT>  
} `&pb`P<`  
if((j-l)>THRESHOLD){ f{3FoN= z  
stack[++top]=l+1; TUpEh Q+*  
stack[++top]=j; D"^ogY#LK  
} \GMudN  
/23v]HEPy  
} ,pLesbI  
file://new InsertSort().sort(data); SCGQo.~,  
insertSort(data); LR9'BUfFv  
} (/@o7&>*50  
/** ^+GN8LUs  
* @param data ?7G[`@^Y  
*/ p%3';7W\  
private void insertSort(int[] data) { #(  kT  
int temp; b]|7{yMV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KpwUp5K  
} H.>KYiv+  
} Ei}DA=:s  
} ?|s[/zPS=  
xFpJ#S&  
} ^xqh!  
c#Y9L+O  
归并排序: 8V}c(2m  
|ZZ3Qr+%S  
package org.rut.util.algorithm.support; &Q&$J )0  
)9<)mV*EB(  
import org.rut.util.algorithm.SortUtil; "UA W  
X0!48fL*  
/** 6?,r d   
* @author treeroot ~)ByARao=  
* @since 2006-2-2 YDmFR,047  
* @version 1.0 0hNc#x6  
*/ .Dx]wv  
public class MergeSort implements SortUtil.Sort{ ||!k 3t#<  
^8MgNVoJ)  
/* (non-Javadoc) |=h>3Z=r!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `q xg  
*/ [fW:%!Y'  
public void sort(int[] data) { pbgCcO~xm  
int[] temp=new int[data.length]; HuK'tU#  
mergeSort(data,temp,0,data.length-1); =%]dk=n?TN  
} :$}67b)MO  
_FVIN;!  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]h|GaHiE  
int mid=(l+r)/2; =3( ZUV X  
if(l==r) return ; f3596a  
mergeSort(data,temp,l,mid); L1D%vu`  
mergeSort(data,temp,mid+1,r); lT(MywNsg  
for(int i=l;i<=r;i++){ 9]7^/g*!  
temp=data; vkt)!hl `  
} q g%<>B&"  
int i1=l; tGf  
int i2=mid+1; :^ cA\2=  
for(int cur=l;cur<=r;cur++){ %*s[s0$c  
if(i1==mid+1) \}<nXn!  
data[cur]=temp[i2++]; ]"YG7|EU  
else if(i2>r) yXEC@#?|  
data[cur]=temp[i1++]; Z>X -ueV  
else if(temp[i1] data[cur]=temp[i1++]; -AffKo  
else XDI@ mQmzB  
data[cur]=temp[i2++]; SgY>$gP9S  
} `Zk?.1*2/  
} c^=,@#  
!D6@\  
} HZP`u >.  
0#yo\McZ  
改进后的归并排序: Y)a 7osML  
 35,SPR  
package org.rut.util.algorithm.support; a]ftE\99  
Y)!5Z.K  
import org.rut.util.algorithm.SortUtil; "C0oFRk  
-bs~{  
/** xUeLX`73  
* @author treeroot  F-ijGGL#  
* @since 2006-2-2 (^6SF>'  
* @version 1.0 N:d" {k  
*/ Q}m)Q('Rk  
public class ImprovedMergeSort implements SortUtil.Sort { K}wUM^  
A46y?"]/30  
private static final int THRESHOLD = 10; k|g~xmI;  
IPY@9+]  
/* M<)HJ lr  
* (non-Javadoc) gGZ$}vX  
* Gb MSO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zx\?cF  
*/ YxsW Y7J  
public void sort(int[] data) { g@S"!9[;U  
int[] temp=new int[data.length]; G_X'd  
mergeSort(data,temp,0,data.length-1); ci*Z9&eS+  
} ^c-1w V` /  
\Hy~~Zh2  
private void mergeSort(int[] data, int[] temp, int l, int r) { p~M^' k=d  
int i, j, k; 0mCrA|A.  
int mid = (l + r) / 2; yTmoEy. q  
if (l == r) yuhSP{pv'  
return; Jj([O2Eq$  
if ((mid - l) >= THRESHOLD) u/``*=Y@  
mergeSort(data, temp, l, mid); ft$/-;  
else m+V'*[O{  
insertSort(data, l, mid - l + 1); O@EpRg1  
if ((r - mid) > THRESHOLD) ^TDHPBlG  
mergeSort(data, temp, mid + 1, r); JA1(yt  
else 4wK!)Pwq  
insertSort(data, mid + 1, r - mid); WF:i}+g+^  
G-T:7  
for (i = l; i <= mid; i++) { ,!Q2^R   
temp = data; CM~)\prks  
} 0A|.ch  
for (j = 1; j <= r - mid; j++) { f4:g D*YT  
temp[r - j + 1] = data[j + mid]; /tV)8pEj  
} PCD1I98  
int a = temp[l]; Pirc49c  
int b = temp[r]; 4m%_#J{  
for (i = l, j = r, k = l; k <= r; k++) { pYVQ-r%QF  
if (a < b) { ku?i[Th  
data[k] = temp[i++]; i"zWv@1z  
a = temp; CFn!P;.!  
} else { r6j 3A  
data[k] = temp[j--]; 5]gd,&^?>  
b = temp[j]; ZG<<6y*.  
} hPH= .rX  
} UX(#C,qgG  
} 9r8*'.K`Z  
Q7f\ 5QjT  
/** gP)g_K(e  
* @param data DmPp&  
* @param l K~C*4H:9  
* @param i dRt]9gIsx  
*/ +MXI;k_  
private void insertSort(int[] data, int start, int len) { _kgw+NA&-H  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wD"Y1?Mr  
} \~U8<z  
} q]<cn2  
} gNN{WFHQX:  
} $c[8-=  
mZ*!$P:vy"  
堆排序: ZOfyy E  
hesL$Z [  
package org.rut.util.algorithm.support; ,%yjEO  
vA:1z$m  
import org.rut.util.algorithm.SortUtil; X8p-VCkV  
De\&r~bTW9  
/** Ll%[}C?~]?  
* @author treeroot $^}?98m  
* @since 2006-2-2 }"%tlU!}  
* @version 1.0 i,Yv  
*/ quVTqhg"  
public class HeapSort implements SortUtil.Sort{ vt@.fT#e  
yw$er?  
/* (non-Javadoc) }M * Oo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &+d>xy\^/  
*/ ojUBa/  
public void sort(int[] data) { j:\MrYt0H  
MaxHeap h=new MaxHeap(); i\2~yXw\  
h.init(data); Z6A*9m  
for(int i=0;i h.remove(); ]xfu @''  
System.arraycopy(h.queue,1,data,0,data.length); Tf<1Z{9  
} F3i+t+Jt  
Hq3"OMGq  
private static class MaxHeap{ X^eTf-*T  
|Fm(  
void init(int[] data){ OT&J OTk\  
this.queue=new int[data.length+1]; hK&jo(V  
for(int i=0;i queue[++size]=data; m "h{HgJd  
fixUp(size); seB ^o}  
} a9`E&Q}z  
} v&D^N9hy9  
tc.R(F96  
private int size=0; 5ZSV)$t  
8dNwi&4  
private int[] queue; 7q^o sOj"  
y08.R. l  
public int get() { |Xlpgdiu  
return queue[1]; 4(f[Z9 iZ]  
} db'Jl^  
Zchs/C 9{  
public void remove() { @GK0j"_  
SortUtil.swap(queue,1,size--); /Z94<}C6b  
fixDown(1); n GZZCsf <  
} %l( qyH)*  
file://fixdown [?Wt ZM^q  
private void fixDown(int k) { GBFYa6\4sT  
int j; mADq_` j  
while ((j = k << 1) <= size) { d @<(Z7|  
if (j < size %26amp;%26amp; queue[j] j++; 3Gubq4r  
if (queue[k]>queue[j]) file://不用交换 "k o?AUt  
break; =c"`>Vi@d  
SortUtil.swap(queue,j,k); MuQyHEDF  
k = j; uckag/tv  
} yF8 av=<{  
} K*xqQ]&  
private void fixUp(int k) { 6-c3v  
while (k > 1) { :GBWQXb G  
int j = k >> 1; 3&^4%S{/  
if (queue[j]>queue[k]) 0,1:l3iu1M  
break; N.vt5WP  
SortUtil.swap(queue,j,k); M,7A|?O  
k = j; 0&mOu #l  
} ELZCrh6*  
} 3Un q 9  
n,q+EZd  
} }1VxMx@  
]d=SkOq  
} L<'3O),}  
dbQUW#<Q  
SortUtil: BT.;l I  
 \09eH[  
package org.rut.util.algorithm; O0`sg90,C  
rlEEf/m:  
import org.rut.util.algorithm.support.BubbleSort; o{f|==<t3#  
import org.rut.util.algorithm.support.HeapSort; ACxOC2\n  
import org.rut.util.algorithm.support.ImprovedMergeSort; q|;_G#4  
import org.rut.util.algorithm.support.ImprovedQuickSort; 61L  vT"  
import org.rut.util.algorithm.support.InsertSort; MF)Xc\}0p  
import org.rut.util.algorithm.support.MergeSort; RB`Emp&T  
import org.rut.util.algorithm.support.QuickSort; GVP"~I~/:  
import org.rut.util.algorithm.support.SelectionSort; ]r8t^bqe  
import org.rut.util.algorithm.support.ShellSort; CZe0kH^:{  
qpjtF'  
/** Ab ,n^  
* @author treeroot ;jS2bc:8a  
* @since 2006-2-2 Y&!M#7/'J3  
* @version 1.0 xOnbY U  
*/ |WqEJ*$,  
public class SortUtil { r2M Iw  
public final static int INSERT = 1; (&HAjB  
public final static int BUBBLE = 2; (L}  
public final static int SELECTION = 3; rH Et]Xa  
public final static int SHELL = 4; FKRO0%M4}Z  
public final static int QUICK = 5; #}*w &y  
public final static int IMPROVED_QUICK = 6; |h$*z9bsf  
public final static int MERGE = 7; KE!aa&g  
public final static int IMPROVED_MERGE = 8; `@1y|j:m  
public final static int HEAP = 9; lO3W:,3_a  
bL soKe  
public static void sort(int[] data) { AlT41v~6  
sort(data, IMPROVED_QUICK); 2[6>h)  
} ky>0  
private static String[] name={ 3NAU|//J  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $8zsqd 4?  
}; K =T]@ix$  
&~gqEl6RF  
private static Sort[] impl=new Sort[]{ ^L#\z7  
new InsertSort(), k`FCyO  
new BubbleSort(), ` ]%\Y>(a}  
new SelectionSort(), +EK(r@eV  
new ShellSort(), 5{/CqUIl  
new QuickSort(), XHU&ix{Od  
new ImprovedQuickSort(), hiO:VA  
new MergeSort(), A`_(L|~  
new ImprovedMergeSort(), kzU;24"K  
new HeapSort() U'(}emh}  
}; E`s9SE  
3jR,lEJyj  
public static String toString(int algorithm){ {,EOSta  
return name[algorithm-1]; l,AK  
} DY1?37h  
v0hr~1  
public static void sort(int[] data, int algorithm) { 64xq@_+  
impl[algorithm-1].sort(data); =+;1^sZ  
} ^T*^L=L_(  
x}Qet4vV  
public static interface Sort { dJID '2a  
public void sort(int[] data); Xvu|ss  
} y Nb&;E7 H  
/xf4*zr  
public static void swap(int[] data, int i, int j) { :a$ZYyD  
int temp = data; *%< Ku&C  
data = data[j]; YF/@]6j  
data[j] = temp; {T|sU\|Q  
} ZfalB  
} U U!M/QJ  
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