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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。 G*%:"qleT$  
插入排序: 2+cpNk$  
osZ] R  
package org.rut.util.algorithm.support; Lf+"Gp  
f_'8l2jK1i  
import org.rut.util.algorithm.SortUtil; <#~n5W{l  
/** *^[j6  
* @author treeroot /a?qtRw  
* @since 2006-2-2 g[$4a4X  
* @version 1.0 G- eSHv  
*/ ^/fasl$#  
public class InsertSort implements SortUtil.Sort{ Er@OmNT  
)>I-j$%=2  
/* (non-Javadoc) W.Z`kH *B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U6F1QLSLz  
*/ 3o BR  
public void sort(int[] data) { {.o@XP,.  
int temp; 3{9d5p|\i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t$g@+1p4  
} 3 @%XR8ss  
} <d~si^*\ch  
} IQeiT[TF  
y7| 3]>Z  
} S pk8u4  
iB#*XJ;q  
冒泡排序: lb\VQZp!y  
.JX9(#Uk  
package org.rut.util.algorithm.support; D hD^w;f]  
D";@)\jN  
import org.rut.util.algorithm.SortUtil; ^]MLEr!S  
' wni.E&  
/** h&2l0 |8k  
* @author treeroot fs0EbVDF  
* @since 2006-2-2 %jn)=;\  
* @version 1.0 \gR%PN  
*/ k8z1AP  
public class BubbleSort implements SortUtil.Sort{ -{A*`.[v  
D|$Fw5!^k6  
/* (non-Javadoc) y_r(06"z1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n}/4em?  
*/ M< /  
public void sort(int[] data) { q![`3m-d.  
int temp; CaR-Yk   
for(int i=0;i for(int j=data.length-1;j>i;j--){ IPf>9#L  
if(data[j] SortUtil.swap(data,j,j-1); 9J$-E4G.M  
} zD;k|"e  
} kxmc2RH>nB  
} "/Pq/\,R|  
} "{[\VsX|c  
v?0F  
} ?z&5g-/b  
^.PCQ~Ql  
选择排序: }CL7h;5N 3  
oS^KC}X  
package org.rut.util.algorithm.support; qKTzigjj  
F}?4h Dt  
import org.rut.util.algorithm.SortUtil; n j2=}6  
8p]9A,Uq&  
/** ;OZl' . %`  
* @author treeroot \3`r/,wY  
* @since 2006-2-2 33g$mUB  
* @version 1.0 Lg{M<Q)4  
*/ }:57Ym)7w  
public class SelectionSort implements SortUtil.Sort { P1ak>T *#2  
B>g(i=E  
/* wSi$.C2  
* (non-Javadoc) |Wr$5r  
* qP]1}-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FG^lh  
*/ sE&1ZJ]7  
public void sort(int[] data) { /xj`'8  
int temp; Xy r'rm5+b  
for (int i = 0; i < data.length; i++) { VS>xvF  
int lowIndex = i; et?FX K"y  
for (int j = data.length - 1; j > i; j--) { }=Ul8 <  
if (data[j] < data[lowIndex]) { .wB'"z8L  
lowIndex = j; gloJ;dE B  
} 8N \<o7t%  
} i` Q&5KL  
SortUtil.swap(data,i,lowIndex); ;8a9S0eS  
} ~LQzt@G4  
} +lxjuEiae  
>wb Uxl%{5  
} *wx95?H0Z  
ERia5HnoD,  
Shell排序: AEkjyh\  
Da8 |eN}   
package org.rut.util.algorithm.support; 4w)>}  
G.`},c;A-  
import org.rut.util.algorithm.SortUtil; b!bg sd  
voQJ!h1  
/** `aTw!QBfG  
* @author treeroot PQp/ &D4K  
* @since 2006-2-2 h'?v(k!  
* @version 1.0 <Zvvx  
*/ @S:T8 *~}  
public class ShellSort implements SortUtil.Sort{ FbRGfHL[  
X9ZHYlr+Q  
/* (non-Javadoc) tQas_K5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HQ]mDo  
*/ )ZI#F]  
public void sort(int[] data) { ]|tR8`DGZ%  
for(int i=data.length/2;i>2;i/=2){ fvk(eWB  
for(int j=0;j insertSort(data,j,i); I]hjv  
} H]7bqr  
} hz*T"HJ]t  
insertSort(data,0,1); zc$}4o  
} N`?|~g3  
AUu<@4R7  
/** DQ30\b"gU  
* @param data Q6D>(H#"0  
* @param j Va?i#<a  
* @param i {2YqEX-I*  
*/ +3J<vM}dy  
private void insertSort(int[] data, int start, int inc) { }0tHzw=#%e  
int temp; 4.^T~n G  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #:By/9}-  
} xy b=7  
} mPHto-=fB  
} c@Br_ -  
.$7RF!p  
} +Gg|BTTL/  
~_Fx2T:X  
快速排序: ?dbSm3  
J/ Lf(;C_  
package org.rut.util.algorithm.support; L]8z6]j*  
`+rwx  
import org.rut.util.algorithm.SortUtil; 5:jme$BI  
Arm'0)B>  
/** j#~~_VA~  
* @author treeroot /Ry% K4$  
* @since 2006-2-2 )z\#  
* @version 1.0 c BZ,"kp-  
*/ Xdx8HB@L  
public class QuickSort implements SortUtil.Sort{ Ar[|M 2|  
tH4 q*\U  
/* (non-Javadoc) g$^-WmX\m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~TsRUT  
*/ /# ]eVD  
public void sort(int[] data) { wN58uV '  
quickSort(data,0,data.length-1); ox%j_P9@:  
} AH:uG#  
private void quickSort(int[] data,int i,int j){ e4 ,SR(O>  
int pivotIndex=(i+j)/2; f;Oh"Yt  
file://swap "[!b5f3!I  
SortUtil.swap(data,pivotIndex,j); ' tY(&&  
+<.o,3  
int k=partition(data,i-1,j,data[j]); LRts W(A/  
SortUtil.swap(data,k,j); !^&VZh  
if((k-i)>1) quickSort(data,i,k-1); #>("(euXMF  
if((j-k)>1) quickSort(data,k+1,j); f}"eN/T  
3>^]r jFw  
} 2|=hF9  
/** 3qn_9f]  
* @param data B}[f]8jrM  
* @param i 0&j90J$`  
* @param j 0FtwDM))  
* @return /'aqQ K<  
*/ (Hj[9[=  
private int partition(int[] data, int l, int r,int pivot) { ;Mo_B9  
do{ p]EugLEmG  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]"b:IWPeI  
SortUtil.swap(data,l,r); ?tL'  X  
} !p).3Kx0  
while(l SortUtil.swap(data,l,r); |Z94@uB  
return l; )~)l^0X  
} nH&z4-1Y?  
NLY=o@<  
} Lc5zu7ncg  
&Ap9h# dK  
改进后的快速排序: VC/-5'_6  
Qv5 fK  
package org.rut.util.algorithm.support; 38D5vT)n  
E I(e3  
import org.rut.util.algorithm.SortUtil; n"T ^  
tp}/>gU!  
/** cI'n[G  
* @author treeroot 9Y'pT.Gy b  
* @since 2006-2-2 EW(bM^dk}  
* @version 1.0 RSh_~qMX  
*/ OPDT:e86Y=  
public class ImprovedQuickSort implements SortUtil.Sort { zmGHI! tP  
n|)((W  
private static int MAX_STACK_SIZE=4096; %K4M`R|2]  
private static int THRESHOLD=10; R|$AcNp  
/* (non-Javadoc) Y&j`HO8f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m9A%Z bQ^  
*/ 5RN!"YLI3  
public void sort(int[] data) { mf$YsvPq*+  
int[] stack=new int[MAX_STACK_SIZE]; oG1zPspL  
c>K]$;}  
int top=-1; E&zf<Y  
int pivot; #jW-&a  
int pivotIndex,l,r; I2WP/  
TDDMx |{  
stack[++top]=0; yy=hCjQ)  
stack[++top]=data.length-1; $ mE* =  
U%s@np  
while(top>0){ ];hqI O#nM  
int j=stack[top--]; TLVsTM8 P  
int i=stack[top--]; t&?{+?p: 9  
'*mZ/O-  
pivotIndex=(i+j)/2; qWheoyAB  
pivot=data[pivotIndex]; k\ .9iI'6  
t_jn-Idcf  
SortUtil.swap(data,pivotIndex,j); Rtz~:v%  
u6Gqg(7hw  
file://partition FHQ`T\fC$@  
l=i-1; Au'y(KB  
r=j; %rG4X  
do{ cyJ{AS+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }+n|0xK  
SortUtil.swap(data,l,r); kEnGr6e  
} wpM2{NTP  
while(l SortUtil.swap(data,l,r); 2$5">%?  
SortUtil.swap(data,l,j); +FqD.=8  
>-I <`y-H  
if((l-i)>THRESHOLD){ 4T(d9y  
stack[++top]=i; O*l,&5  
stack[++top]=l-1; }x`Cnn  
} H]R/=OYBUh  
if((j-l)>THRESHOLD){ GNMOHqg4  
stack[++top]=l+1; [w'Q9\,p  
stack[++top]=j; |-}. Y(y  
} \)No?fB  
&M}X$k I  
} 5OI.Ka  
file://new InsertSort().sort(data); B1)Eo2i#  
insertSort(data); q7Hf7^a  
} _x<NGIz  
/** g77M5(ME  
* @param data sQ#e 2  
*/ hz4?ku  
private void insertSort(int[] data) { s6 g"uF>k  
int temp; [[IMf-]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j+gxn_E  
} =|z:wlOs  
} ; zJb("n  
} 71R,R,  
AhN3~/u%7  
} /ovVS6Ai  
d-_V*rYU  
归并排序: X?'cl]1?  
+_7a/3kh  
package org.rut.util.algorithm.support; :,0(aB  
~r.R|f]IQ  
import org.rut.util.algorithm.SortUtil; (L*GU7m;  
jXE:aWQht  
/** B>L7UQ6_[  
* @author treeroot gUru=p  
* @since 2006-2-2 {1OxJn1hd  
* @version 1.0 $o?U=  
*/ jG[Vp b  
public class MergeSort implements SortUtil.Sort{ 6/8K2_UeoW  
(NvjX})eh  
/* (non-Javadoc) T"z<D+ pN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6h>#;M  
*/ ;bB#P g  
public void sort(int[] data) { }CBQdH&g;  
int[] temp=new int[data.length]; ?z9!=A%<V~  
mergeSort(data,temp,0,data.length-1); Pz2 b  
} wu.l-VmGp)  
#-;W|ib%z  
private void mergeSort(int[] data,int[] temp,int l,int r){ k)n b<JW|r  
int mid=(l+r)/2; 6#+&/ "*  
if(l==r) return ; 9Y,JYc#  
mergeSort(data,temp,l,mid); ~JXz  
mergeSort(data,temp,mid+1,r); 2xLtJR4L  
for(int i=l;i<=r;i++){ 1X2j%q I&  
temp=data; U9:)qvMXe  
} t`H1]`c?  
int i1=l; D!o[Sm}JO[  
int i2=mid+1; fIoc)T  
for(int cur=l;cur<=r;cur++){ d^}p#7mB\  
if(i1==mid+1) H]/ ~ #a  
data[cur]=temp[i2++]; 031"D*W'i  
else if(i2>r) {Ge{@1  
data[cur]=temp[i1++]; UN.;w3`Oc  
else if(temp[i1] data[cur]=temp[i1++]; {1Ra |,;  
else (+|+ELfqW  
data[cur]=temp[i2++]; V8M()7uJ  
} uslu-|b!%  
} "@nH;Xlq  
4?+K `  
} -"I$$C  
j hm3:;Z  
改进后的归并排序: ,' | J  
"#O9ij  
package org.rut.util.algorithm.support; N55F5  
:VT%d{Vp_  
import org.rut.util.algorithm.SortUtil; 9!_,A d;3  
g{]6*`/Z  
/** #%;Uh  
* @author treeroot .]vb\NBK7  
* @since 2006-2-2 3}H{4]*%_  
* @version 1.0 ;_bRq:!j;  
*/ Uqel UL}  
public class ImprovedMergeSort implements SortUtil.Sort { wb.yGfJ  
_aFe9+y  
private static final int THRESHOLD = 10; {cs>Sy 4  
M~2Us{ `  
/* 64?HqO 6(  
* (non-Javadoc) S.!,qv z  
* .2E/(VM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0zH-g  
*/ <_xG)vwh.  
public void sort(int[] data) { E5^\]`9P  
int[] temp=new int[data.length]; :01d9|#  
mergeSort(data,temp,0,data.length-1); ;mU;+~YE  
} EVqW(|Xg  
PGP#$JC  
private void mergeSort(int[] data, int[] temp, int l, int r) { O6G\0o  
int i, j, k; KHAc!4lA  
int mid = (l + r) / 2; ~!Nj DDk  
if (l == r) fmuh 9Z  
return; "A}sD7xy9  
if ((mid - l) >= THRESHOLD) 6'^E ],:b  
mergeSort(data, temp, l, mid); ;TJpD0  
else sq2:yt  
insertSort(data, l, mid - l + 1); /2Wg=&H  
if ((r - mid) > THRESHOLD) BXYHJ  
mergeSort(data, temp, mid + 1, r); sQ}|Lu9hZ  
else 3xy2ZYw  
insertSort(data, mid + 1, r - mid); rE m/Q!  
oy8jc];SO  
for (i = l; i <= mid; i++) { `> %QCc\  
temp = data; gE6'A  
} A r!0GwE+  
for (j = 1; j <= r - mid; j++) { t%Jk3W/f  
temp[r - j + 1] = data[j + mid]; kGV:=h  
} MrR`jXz  
int a = temp[l]; "QnYT3[l"  
int b = temp[r]; c~vhkRA  
for (i = l, j = r, k = l; k <= r; k++) { %hSQ\T<8[o  
if (a < b) { j,j|'7J%  
data[k] = temp[i++]; "TA0--6  
a = temp; LaQ7A,]  
} else { h+W$\T)  
data[k] = temp[j--]; 'f6H#V*C  
b = temp[j]; @[g7\d  
} 3jAr"xc  
} O t)}:oG  
} &4:R(]|  
M(a%Qk?]/  
/** Fx:38Ae  
* @param data >%tG[jb  
* @param l |SOLC  
* @param i }MQ:n8  
*/ Og1-LP|X  
private void insertSort(int[] data, int start, int len) { \U$:/#1Oe  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); BH0m[9nU;  
} 76tn`4NIP  
} eUy*0  
} &[[r|  
} Nm"P8/-09  
NBPP?\1  
堆排序: !i"zM}  
$9`#p/V  
package org.rut.util.algorithm.support; uHKEt[PS$  
*a Z1 4  
import org.rut.util.algorithm.SortUtil; 76!LMNf  
:i<*~0r<  
/** JdS,s5Z>  
* @author treeroot R;!,(l  
* @since 2006-2-2 !mxH/{+|n  
* @version 1.0 BEOPZ[Q|c  
*/ hWy@?r.  
public class HeapSort implements SortUtil.Sort{ +cH>'OXoB  
 tKV,  
/* (non-Javadoc) ?0; 2ct  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TaRPMKk  
*/ Cx2# 0$  
public void sort(int[] data) { tczJk1g}  
MaxHeap h=new MaxHeap(); <[[yV  
h.init(data); yUnV%@.  
for(int i=0;i h.remove(); 7W)W9=&BT  
System.arraycopy(h.queue,1,data,0,data.length); dx@dnWRT,  
} &G"s !:  
%&6Q Uv^  
private static class MaxHeap{ D|ceZ <9x  
Eiu/p&ct  
void init(int[] data){ 2K9X (th1  
this.queue=new int[data.length+1]; !'N@ZZ  
for(int i=0;i queue[++size]=data; m54>}  
fixUp(size); %>&ex0j]  
} D"pT?\kO  
} z6R|1L 1  
p-i Fe\+  
private int size=0; y^C5_w(^jZ  
h^ Cm\V  
private int[] queue; {IgH0+z  
$eFMn$o  
public int get() { ;M.Q=#;E  
return queue[1]; 0OM^,5%8  
} M=raKb?F  
4  eLZ  
public void remove() { 1b3 a(^^E  
SortUtil.swap(queue,1,size--); DKj iooD  
fixDown(1); .Exvuo`F  
} f]i"tqoI  
file://fixdown =6~  
private void fixDown(int k) { fn,n'E]  
int j; dcY(1p)  
while ((j = k << 1) <= size) { D\THe-Vtr  
if (j < size %26amp;%26amp; queue[j] j++; zpwoK&T+  
if (queue[k]>queue[j]) file://不用交换 m8L *LB  
break; KM;H '~PZi  
SortUtil.swap(queue,j,k); ,1{qZ(l1  
k = j; a]r+np]vTy  
} t)&U'^  
} 3Z" ;a  
private void fixUp(int k) { ?+Gt?-! 5q  
while (k > 1) { &b|RoPV  
int j = k >> 1; vQ}ZfP  
if (queue[j]>queue[k]) YD[HBF)~j  
break; 5[4wN( )  
SortUtil.swap(queue,j,k); qHub+"2  
k = j; -*k2:i`  
} &za }TH m  
} <J<"`xKL  
K80f_ iT 5  
} ,,u hEoH  
;8^k=8  
} H1c8]}  
R$awo/'^  
SortUtil: Ss%Cf6qdWL  
g)#?$OhP"  
package org.rut.util.algorithm; dM;\)jm  
 oE+P=  
import org.rut.util.algorithm.support.BubbleSort; AAQ!8!  
import org.rut.util.algorithm.support.HeapSort; f5*qlQJFz\  
import org.rut.util.algorithm.support.ImprovedMergeSort; ZR\N~.  
import org.rut.util.algorithm.support.ImprovedQuickSort; C7dq=(p&  
import org.rut.util.algorithm.support.InsertSort; Q#3}AO  
import org.rut.util.algorithm.support.MergeSort; @4y?XL(n  
import org.rut.util.algorithm.support.QuickSort; 4MPy}yT*  
import org.rut.util.algorithm.support.SelectionSort; ^y@ W\  
import org.rut.util.algorithm.support.ShellSort;  $U?]^  
svmb~n&x6  
/** Ef`'r))  
* @author treeroot B{)#A?Rh.  
* @since 2006-2-2 >T]9.`xhK  
* @version 1.0 I$.lFQ%(  
*/ nriSVGi  
public class SortUtil { OdFF)-K >~  
public final static int INSERT = 1; i(|u g_^  
public final static int BUBBLE = 2; 4*}&nmW  
public final static int SELECTION = 3; 2A\b-;4EP  
public final static int SHELL = 4; r<ww%2HTS  
public final static int QUICK = 5; LL e*| :  
public final static int IMPROVED_QUICK = 6; p/ (Z2N"  
public final static int MERGE = 7; #$Zx].[lc  
public final static int IMPROVED_MERGE = 8; r2SZC`Z}-M  
public final static int HEAP = 9; {Phq39g  
2VY7?1Ab(@  
public static void sort(int[] data) { :4zu.  
sort(data, IMPROVED_QUICK); le \f:  
} trDw|WA  
private static String[] name={ !Wr<T!T  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )l`Ks  
}; +A?P4}  
Bug.>ln1  
private static Sort[] impl=new Sort[]{ G{[w+ObX  
new InsertSort(), k( Sda>-  
new BubbleSort(), e#/&A5#Ya  
new SelectionSort(), QwX81*nx  
new ShellSort(), Zy+ERaF|]  
new QuickSort(), 5@5 *}[M  
new ImprovedQuickSort(), uMDd Zj&  
new MergeSort(), ?7NSp2aq2A  
new ImprovedMergeSort(), UK,bfLPt~  
new HeapSort() ?L0;, \-t  
}; -u@ ^P7  
r{.pXf  
public static String toString(int algorithm){ j;.P  
return name[algorithm-1]; B}TY+@  
} 0 8)f  
:j`f%Vg~x  
public static void sort(int[] data, int algorithm) { h"ZIh= j@  
impl[algorithm-1].sort(data); `R2Iw I&  
} ?+EAp"{j  
UWO3sZpU  
public static interface Sort { /V*SI!C<f  
public void sort(int[] data); F% n}vA`  
} tn$TyCzckW  
z6U'"T"a  
public static void swap(int[] data, int i, int j) { 4tkT\.  
int temp = data; \C$e+qb~{  
data = data[j]; )f$4: Pq  
data[j] = temp; L6CI9C;-b  
} bIGcszWr  
} -m}'I8  
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