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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。 `* "u"7e  
插入排序: A@bWlwfl  
Q2cF++Q1  
package org.rut.util.algorithm.support; B)O=wx  
NoO>CjeFb  
import org.rut.util.algorithm.SortUtil; l " pCxA  
/** vP^]Y.6  
* @author treeroot d#Sc4xuf  
* @since 2006-2-2 DalQ.   
* @version 1.0 [6K2V:6:  
*/ >/;\{IG Wn  
public class InsertSort implements SortUtil.Sort{ \NhCu$'  
GK)3a 9;  
/* (non-Javadoc) lyI rO"o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @^a6^*X>  
*/ v]F q}I"  
public void sort(int[] data) { O_K@\<;~  
int temp; {R `IA|T#k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /_@S*=T5  
} nL5Gr:SLo  
} 7{RI`Er`  
} `)\_  
p^Ca-+R3  
} EJjTf:  
;38W41d{  
冒泡排序: :^0g}8$<  
y$r^UjJEO  
package org.rut.util.algorithm.support; MG>g?s'!  
t;Jt+k~  
import org.rut.util.algorithm.SortUtil; jV\M`=4IC  
Q\z3YUk  
/** OHssUt  
* @author treeroot C,n]9  
* @since 2006-2-2 ~'dnrhdme  
* @version 1.0 L Tp5T|O  
*/ <4bv=++pS  
public class BubbleSort implements SortUtil.Sort{ Ictc '#y  
b<_*~af  
/* (non-Javadoc) 1B'i7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^%~ztn 51  
*/ c=I!?a"  
public void sort(int[] data) { cBmo#:>'  
int temp; 0 !9vGs  
for(int i=0;i for(int j=data.length-1;j>i;j--){ g-pDk*|I,Q  
if(data[j] SortUtil.swap(data,j,j-1); &FHE(7}/#  
} 8xj4N%PA  
} B3O^(M5W  
} Bjml%  
} 8H./@~_ =  
Ox?LVRvxI  
} E87/B%R  
iN*d84KTP  
选择排序: to[EA6J8l  
v|VY5vN  
package org.rut.util.algorithm.support; EhEn|%S  
ABNsi$]r0  
import org.rut.util.algorithm.SortUtil; -le:0NUwI  
mz1Xk ]nE  
/** ' :g8a=L  
* @author treeroot `=uCp^ +v  
* @since 2006-2-2 mvVVPf9  
* @version 1.0 D4s*J21)D  
*/ 7 tF1g=\  
public class SelectionSort implements SortUtil.Sort { }zRYT_:  
[A|W0  
/* Wq0h3AjR  
* (non-Javadoc) |O\(<n S  
* /AJ ^wY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f<xF+wE  
*/ $%;NX[>j  
public void sort(int[] data) { <3P?rcd,5K  
int temp; n]ar\f  
for (int i = 0; i < data.length; i++) { 9V?MJZ@aG  
int lowIndex = i; AS|gi!OVA  
for (int j = data.length - 1; j > i; j--) { P0RM df  
if (data[j] < data[lowIndex]) { / Zz2=gDY  
lowIndex = j; $Pzvv`f*  
} wC!(STu  
} a: iIfdd4'  
SortUtil.swap(data,i,lowIndex); hOfd<k\A  
} +hY/4Tx<  
} gwThhwR  
U'";  
} 6TfL|W<  
jt"p Js'  
Shell排序: eWqJ2Tt  
9Lk.\.  
package org.rut.util.algorithm.support; EM vV  
LAw X9q`  
import org.rut.util.algorithm.SortUtil; BRQ9kK20  
PHfGl  
/** aC]~   
* @author treeroot ?P<&8eY  
* @since 2006-2-2 )pr pG !  
* @version 1.0 GK95=?f~8;  
*/ }w8h^(+B  
public class ShellSort implements SortUtil.Sort{ }O2hhh_  
O~{Zs\u9  
/* (non-Javadoc) 4 E 4o=Z|K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > m}.}g8  
*/ 7*'_&0   
public void sort(int[] data) { s7FqE>#c0  
for(int i=data.length/2;i>2;i/=2){ 2r?g|< :  
for(int j=0;j insertSort(data,j,i); +/\.%S/  
} Se"\PxBR  
} /nb(F h|{T  
insertSort(data,0,1); ~rpYZLH/:0  
} Q;m .m2  
TQ=\l*R(A  
/** s<:"rw`  
* @param data LrF'Hd=O  
* @param j wH|\;M{0V1  
* @param i 4DuZF -y  
*/ SjlkKulMF  
private void insertSort(int[] data, int start, int inc) { t~5>PS  
int temp; CG=#rc]vz  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ug_zyfr  
} )KXLL;]  
} ywq{9)vq  
} Esw&ScBOP  
8"oS1W  
} w$Dp m.0(  
 V}8J&(\  
快速排序: >/e#Z h  
]lz,?izMR  
package org.rut.util.algorithm.support; >:OOuf#  
qf)]!w U9  
import org.rut.util.algorithm.SortUtil; 9!bD|-6y  
((.PPOdJV  
/** gl]{mUZz}  
* @author treeroot %*|XN*iXC  
* @since 2006-2-2 yc%AkhX*  
* @version 1.0 gP/]05$e  
*/ IFG`  
public class QuickSort implements SortUtil.Sort{ 3XL0Pm  
QR4v6*VpD  
/* (non-Javadoc) Yo7ctwzdH;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wfo}TGhC  
*/ #\`6ZHW  
public void sort(int[] data) { gkBat(Uc  
quickSort(data,0,data.length-1); H[-zQ#I9  
} O,^,G<`  
private void quickSort(int[] data,int i,int j){ <LBMth  
int pivotIndex=(i+j)/2; H7l[5 ib  
file://swap $9W9*WQL  
SortUtil.swap(data,pivotIndex,j); j{p0yuZ)<  
).v;~yE   
int k=partition(data,i-1,j,data[j]); OEB_LI'  
SortUtil.swap(data,k,j); D#(A?oN  
if((k-i)>1) quickSort(data,i,k-1); X+&@$v1  
if((j-k)>1) quickSort(data,k+1,j); diTzolY7  
 sGdt)  
} '7Te{^<FQ$  
/** c (\-7*En  
* @param data :&_@U$  
* @param i Xj !0jF33  
* @param j CuuHRvU8  
* @return : FxZdE  
*/ :M=!MgD3w  
private int partition(int[] data, int l, int r,int pivot) { `uzRHbJ`  
do{ kx'6FkZPIr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )K5~r>n&  
SortUtil.swap(data,l,r); u;=("S{"0  
} <#`<Ys3b*!  
while(l SortUtil.swap(data,l,r); PicO3m  
return l; UK _2i(I"e  
} @Chj0wWZ>  
"B+M5B0Z  
} -$e\m] }Z  
i g?]kZ  
改进后的快速排序: It]CoAo+  
1 #EmZ{*  
package org.rut.util.algorithm.support; <Xl G:nmY  
Y ciZU  
import org.rut.util.algorithm.SortUtil; )Xg#x:  
60`y=!?f  
/** Ma{|+\Q.Z  
* @author treeroot v[Ar{t&  
* @since 2006-2-2 a 2).Az  
* @version 1.0 N18Zsdrp  
*/ B623B HwS  
public class ImprovedQuickSort implements SortUtil.Sort { &<!I]:Y  
>TL0hBaaR  
private static int MAX_STACK_SIZE=4096; VaQ}XM  
private static int THRESHOLD=10; ?dxhe7m  
/* (non-Javadoc) }]g>PY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t5 5k#`Z  
*/ E"u>&uPH  
public void sort(int[] data) { c-s ~q/  
int[] stack=new int[MAX_STACK_SIZE]; ->93.sge  
snj+-'4T  
int top=-1;  \f  
int pivot; bZtjg  
int pivotIndex,l,r; @x{;a9y  
"]JS,g {m  
stack[++top]=0; )0UQy#r  
stack[++top]=data.length-1; O"Xjv`j:  
 p&ZD1qa  
while(top>0){ :T'"%_d5  
int j=stack[top--];  Rl 6E  
int i=stack[top--]; .^Ek1fi.  
nnr(\r~  
pivotIndex=(i+j)/2; |@d7o]eM|  
pivot=data[pivotIndex]; <Pf W  
'<XG@L  
SortUtil.swap(data,pivotIndex,j); n*_FC  
Dk[[f<H_{  
file://partition lT$A;7[  
l=i-1; E-! `6  
r=j; 6oJ~Jdn'  
do{ ZEApE+m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?[VS0IBS  
SortUtil.swap(data,l,r); eb:uh!  
} u1>|2D  
while(l SortUtil.swap(data,l,r); N$_Rzh"9rr  
SortUtil.swap(data,l,j); @-u/('vpB  
K3\U'bRO  
if((l-i)>THRESHOLD){ L*L3;y|  
stack[++top]=i; uFECfh  
stack[++top]=l-1; [>6:xGSe9X  
} 'z+8;g.ekO  
if((j-l)>THRESHOLD){ >i`'e~%  
stack[++top]=l+1; tK]r>?Y\  
stack[++top]=j; DmD*,[rD  
} =_v_#;h&  
T.&^1qWWA  
} vH7"tz&RIp  
file://new InsertSort().sort(data); O{%y `|m  
insertSort(data); dq|z;,`  
} >B~p[wh0  
/** vsES`  
* @param data "CLd_H*)c  
*/ h^[K= J  
private void insertSort(int[] data) { Zx`hutCv  
int temp; mtJI#P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \Dr@n^hk@[  
} lf Wxdi  
} *[_?4*F  
} i<&2Ffvq  
c: #1Aym  
} 9~u1fk{  
 !@bN  
归并排序: YFsEuaV  
m: w/[|_  
package org.rut.util.algorithm.support; 6'?Y]K  
(5'qEi ea  
import org.rut.util.algorithm.SortUtil; #PtV=Ee1  
,hX03P-X  
/** J6::(0HM  
* @author treeroot 7G2TTa  
* @since 2006-2-2 l} h<2  
* @version 1.0 YMJjO0  
*/ i mJ{wF  
public class MergeSort implements SortUtil.Sort{ mDj:w#q  
^V>sNR  
/* (non-Javadoc) 3QGg;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |QxDjL<&t4  
*/ G?8,&jP~T  
public void sort(int[] data) { b/ur!2yr  
int[] temp=new int[data.length]; Ku&0bXP  
mergeSort(data,temp,0,data.length-1); 6C) G  
} +h[$\_y  
5H?`a7q N  
private void mergeSort(int[] data,int[] temp,int l,int r){ Q0nSOTQ  
int mid=(l+r)/2; ~f ){`ZJc  
if(l==r) return ; Ok O;V6`  
mergeSort(data,temp,l,mid); | \Qr cf  
mergeSort(data,temp,mid+1,r); :2  
for(int i=l;i<=r;i++){ g^8bY=* .  
temp=data; '&s:,o-p  
} wCc:HfmjJ  
int i1=l; kqv>rA3  
int i2=mid+1; *crpM3fO>  
for(int cur=l;cur<=r;cur++){ 30[?XVI&  
if(i1==mid+1) H VG'v>s@  
data[cur]=temp[i2++]; KqaeRs.u  
else if(i2>r) 5/Swn9vwl  
data[cur]=temp[i1++]; Z.VVY\  
else if(temp[i1] data[cur]=temp[i1++]; %n!s{5:F  
else 8M:;9a8fh  
data[cur]=temp[i2++]; %VSST?aUvX  
} Z/56JYt!~  
} #!9aTp).AL  
&87D.Yy^  
} 1<fEz  
J%D'Xlb  
改进后的归并排序: d) G7U$z~  
Px'%5TKN  
package org.rut.util.algorithm.support; E%jOJA  
tse(iX/D  
import org.rut.util.algorithm.SortUtil; UHweV:(|T  
8pt;''  
/** sDWX} NV  
* @author treeroot _vvnxG!x&  
* @since 2006-2-2 (zye Ch  
* @version 1.0 Y.jg }oV  
*/ jw#'f%*  
public class ImprovedMergeSort implements SortUtil.Sort { 9 `J`(  
s`GSc)AI  
private static final int THRESHOLD = 10; l0[jepmpiT  
u`K+0^)T`  
/* &bnF{~<\  
* (non-Javadoc) 7P!/jaw xb  
* `%F.]|Y0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qe]@`Vg  
*/ I=Ws /+  
public void sort(int[] data) { 1 dI  
int[] temp=new int[data.length]; )#i]exZ  
mergeSort(data,temp,0,data.length-1); #Rjm3#gc  
} OFCkQEG=y>  
nN/v7^^  
private void mergeSort(int[] data, int[] temp, int l, int r) { |~rDEv3  
int i, j, k; 3"!2C,3c#  
int mid = (l + r) / 2; 4$d|}ajH  
if (l == r) d/Fjs0pt  
return; '-gk))u>)  
if ((mid - l) >= THRESHOLD) :3{@LOil^  
mergeSort(data, temp, l, mid); Xp._B4g  
else $fuFx8`2W  
insertSort(data, l, mid - l + 1); 6+m)   
if ((r - mid) > THRESHOLD) %|oY8;0|A>  
mergeSort(data, temp, mid + 1, r); )^g}'V=vIr  
else O)&xT2'J  
insertSort(data, mid + 1, r - mid); Yy>%dL  
JL2IVENWc  
for (i = l; i <= mid; i++) { @5Ril9J[b  
temp = data; +;U}SR<  
} pShSK Rg  
for (j = 1; j <= r - mid; j++) { Lm:O vVVB  
temp[r - j + 1] = data[j + mid]; B,|M  
} Yca9G?^\v  
int a = temp[l]; 7Cp>iWV  
int b = temp[r]; m'oVqA&  
for (i = l, j = r, k = l; k <= r; k++) { Joq9.%7Q  
if (a < b) { q.~.1 '`!  
data[k] = temp[i++]; 26.iFt/:  
a = temp; (!DH'2I[  
} else { -:cS}I  
data[k] = temp[j--]; fC]+C(*d  
b = temp[j]; 6DR@$fpt  
} _(J- MCY\  
} Pw hs`YGMF  
} j$&k;S  
9BNAj-Xa  
/** [WX+/pm7>  
* @param data noh3mi  
* @param l tNmH*"wR<  
* @param i B;hc|v{(  
*/ "`C|;\w  
private void insertSort(int[] data, int start, int len) { 8Tv;,a  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 76$19  
} +J_A *B  
} f+%J=Am  
} $vlgiJ&f  
} uSM4:!8  
u%VO'}Gz  
堆排序: f![x7D$  
f(?>z!n0  
package org.rut.util.algorithm.support; z`>a,X  
p^ 9QYR  
import org.rut.util.algorithm.SortUtil; JR'Q Th:z  
\TC&/'7}  
/** ~e,  
* @author treeroot (3{'GX2c  
* @since 2006-2-2 =u${2=  
* @version 1.0 ~=Er= 0  
*/  .;iXe  
public class HeapSort implements SortUtil.Sort{ 4xe:+sA.N  
`H+ 7Hj  
/* (non-Javadoc) Q*(]&qr"E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ 7O[|:Yv  
*/ !*?&V3!  
public void sort(int[] data) { `k^ i#Nc>  
MaxHeap h=new MaxHeap(); 3=T<c?[  
h.init(data); N$p}rh#7{  
for(int i=0;i h.remove(); i*W8_C:S  
System.arraycopy(h.queue,1,data,0,data.length); w v9s{I{P  
} e%(zjCA  
( F0.lDZ  
private static class MaxHeap{ sjWhtd[fgG  
2"yzrwZ:  
void init(int[] data){ |>jlY|  
this.queue=new int[data.length+1]; D:8-f3  
for(int i=0;i queue[++size]=data; j4ypXPY``!  
fixUp(size); s2b!Nib  
} ?n\~&n'C  
} H6bomp"  
V1xpJ  
private int size=0; \ $X3n\  
q6\z]8)  
private int[] queue; '[`.&-;  
+CX2W('  
public int get() { F@"X d9q?  
return queue[1]; SO]x^+[  
} IOvYvFUUJ  
htMsS4^Kvd  
public void remove() { y !47!Dn  
SortUtil.swap(queue,1,size--); ;T-i+_  
fixDown(1); R:0Fv9bwS  
} "EWU:9\0  
file://fixdown vb{&T<  
private void fixDown(int k) { i ,4  
int j; J j yQ  
while ((j = k << 1) <= size) { { tim{nV  
if (j < size %26amp;%26amp; queue[j] j++; XMa(XOnX  
if (queue[k]>queue[j]) file://不用交换 gigDrf}  
break; rAn''X6H  
SortUtil.swap(queue,j,k); <W|{zAyv  
k = j; ]rZ"5y  
} uhQ3  
} e`<=& w  
private void fixUp(int k) { vyN =X]p  
while (k > 1) { }I; =IYrN  
int j = k >> 1; aNv6 "  
if (queue[j]>queue[k]) }Jjq]lW  
break; K )KE0/ n  
SortUtil.swap(queue,j,k); x%vt$dy*8  
k = j; b0m1O.&I_  
} ',*I=JW;  
} (^eE8j/K  
vh KA8vr  
} $T1 D ?X  
$-5iwZ  
} 8^c|9ow  
 5t:4%  
SortUtil: pc^(@eD  
Rj^bZ%t  
package org.rut.util.algorithm; 75Jh(hd(  
rM=Q.By+\  
import org.rut.util.algorithm.support.BubbleSort; DK*2 d_  
import org.rut.util.algorithm.support.HeapSort; 9i,QCA  
import org.rut.util.algorithm.support.ImprovedMergeSort; !@ai=p  
import org.rut.util.algorithm.support.ImprovedQuickSort; YpL{c*M  
import org.rut.util.algorithm.support.InsertSort; |+cyb<(V J  
import org.rut.util.algorithm.support.MergeSort; < ynm A  
import org.rut.util.algorithm.support.QuickSort; QIBv}hgcy  
import org.rut.util.algorithm.support.SelectionSort; U/D\N0  
import org.rut.util.algorithm.support.ShellSort; A~h.,<+"  
+ 5sT GNG  
/** yY`<t  
* @author treeroot jVi''#F?f  
* @since 2006-2-2 :*A6Ba  
* @version 1.0 Zo-s_6uC  
*/ I&Yu=v/_  
public class SortUtil { 3::DURkjf  
public final static int INSERT = 1; !_l W#feR  
public final static int BUBBLE = 2;  ]c[80F-  
public final static int SELECTION = 3; 'ZT E"KT  
public final static int SHELL = 4; g2:^Z==  
public final static int QUICK = 5; hb_YdnG  
public final static int IMPROVED_QUICK = 6; G80d!*7  
public final static int MERGE = 7; Ax=Rb B"  
public final static int IMPROVED_MERGE = 8; Ct$e`H!;  
public final static int HEAP = 9; S7E:&E&  
t+q:8HNh  
public static void sort(int[] data) { Q4CxtY  
sort(data, IMPROVED_QUICK); q:J,xC_sF(  
} -UUP hGC  
private static String[] name={ @xSS`&b  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" HWVWl~FA  
}; k2 k/v[60  
*oZBv4Vh   
private static Sort[] impl=new Sort[]{ _d %H;<_  
new InsertSort(), lwQI 9U[O2  
new BubbleSort(), =WFMqBh<`  
new SelectionSort(), ,K3)f.ArYc  
new ShellSort(), G/N'8Q)  
new QuickSort(), 5s;HF |2x  
new ImprovedQuickSort(), RUYw D tC  
new MergeSort(), .OX.z~":y  
new ImprovedMergeSort(), B~caHG1b  
new HeapSort() >[O @u4  
}; sW3-JA]  
+\\,FO_  
public static String toString(int algorithm){ [=S@lURzm@  
return name[algorithm-1]; ~Q>97%  
} N/qr}- 3z  
!yG{`#NZZ  
public static void sort(int[] data, int algorithm) { ?9 :{p  
impl[algorithm-1].sort(data); \96?OC dr  
} D0lgKQ  
`:-{8Vo7  
public static interface Sort { L*D-RYW  
public void sort(int[] data); wrac\.  
} UT==x<  
I/pavh  
public static void swap(int[] data, int i, int j) { PG&@.KY  
int temp = data; y9pQ1H<F;  
data = data[j]; /".+OpL  
data[j] = temp; k8 ,.~HkU  
} d]0fgwwGC  
} R`!x<J  
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