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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。 $ouw *|<  
插入排序: c SV`?[a  
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package org.rut.util.algorithm.support; Un~8N  
Qf>$'C(7!a  
import org.rut.util.algorithm.SortUtil; (2SmB`g   
/** \~r`2p-K  
* @author treeroot Mur)'  
* @since 2006-2-2 o4zX 41W  
* @version 1.0 9tMaOm  
*/ ^%qe&Pe2  
public class InsertSort implements SortUtil.Sort{ :pp@x*uNP  
~ \{a<-R  
/* (non-Javadoc) ki8;:m4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fK0VFN8<I  
*/ JZo18^aD"'  
public void sort(int[] data) { [J{M'+a  
int temp; x(tf0[g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hdn%r<+c  
} ev{;}2~V  
} S.I3m-  
} n&n WY+GEo  
j6JK4{  
} .:b&$~<  
 Fhk 8  
冒泡排序: >iKbn  
O 7Z?y*  
package org.rut.util.algorithm.support; Nueb xd  
)Z"  
import org.rut.util.algorithm.SortUtil; zUIh^hbFf  
[Zpx :r}  
/** 5Y3L  
* @author treeroot l!d |luqbA  
* @since 2006-2-2 &>xd6-  
* @version 1.0 S#:yl>2  
*/ TpSv7kT]  
public class BubbleSort implements SortUtil.Sort{ -r'/PbV0  
Fcz}Gs4  
/* (non-Javadoc) 'bb *$T0=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fs3rsig  
*/ jY+u OH  
public void sort(int[] data) { Cd7imj  
int temp; YjR`}rdwo  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Sc/\g  
if(data[j] SortUtil.swap(data,j,j-1); \Qgc7ev  
} ;k=&ZV  
} c{,VU.5/  
} %FhUjHm  
} nn?h;KzB  
@CUYl*.PD  
} e|e"lP  
kR !O-@GJ]  
选择排序: Wp |qv  
J6C/`)+w  
package org.rut.util.algorithm.support; LFskNF0X  
>* )fmfY  
import org.rut.util.algorithm.SortUtil; fN!lXPgM  
ZYexW=@  
/** k0(_0o  
* @author treeroot I" hlLP  
* @since 2006-2-2 i>aIuQ`pe  
* @version 1.0 I)AbH<G{  
*/ wR%F>[ 6.{  
public class SelectionSort implements SortUtil.Sort { DCheG7lo{  
s$wIL//=  
/* }HKt{k&$  
* (non-Javadoc) v(`9+*  
* 1Uaj}= @M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; "K"S[  
*/ sq45fRAi  
public void sort(int[] data) { "|^-Yk\U  
int temp; [a[.tR38e  
for (int i = 0; i < data.length; i++) { b$JrLZs$_  
int lowIndex = i; ,vh $G 7D  
for (int j = data.length - 1; j > i; j--) { N87)rhXSo,  
if (data[j] < data[lowIndex]) { ;ipT0*Y  
lowIndex = j; EZee kxs  
} WZQ EBXs  
} 6g-Q  
SortUtil.swap(data,i,lowIndex); (~ `?_  
} Jmml2?V-c  
} qGXY  
8t5o&8v  
} -FGM>~x  
/7fD;H^*  
Shell排序: C)?tf[!_6  
g@2f& m  
package org.rut.util.algorithm.support; M->BV9  
L']"I^( N  
import org.rut.util.algorithm.SortUtil; ak"W/"2:  
U0ZPY )7k  
/** s J{J@/5  
* @author treeroot Wi+}qO  
* @since 2006-2-2 F^Y%Q(Dd7w  
* @version 1.0 @QO^3%b8  
*/ VxAG= E  
public class ShellSort implements SortUtil.Sort{ V]5MIiNl  
oiTSpd-  
/* (non-Javadoc) A:4?Jd>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xS+!/pBf"Y  
*/ Aryp!oW  
public void sort(int[] data) { WS6;ad;|  
for(int i=data.length/2;i>2;i/=2){ BS|$-i5L  
for(int j=0;j insertSort(data,j,i); HD YWDp  
} 7SJbrOL4Q-  
} ;u*I#)7  
insertSort(data,0,1); I&wJK'GM`  
} =1+/`w  
X-y3CO:&@h  
/** c\le8C3  
* @param data i?:#lbw_  
* @param j @:Emmzucv|  
* @param i t\XA JU  
*/ dJF3]h Y  
private void insertSort(int[] data, int start, int inc) { 1}Th@Vq  
int temp; QJF_ "  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =eyPo(B  
} mfx-Ja_a  
} 5q;c=oRUj  
} TXS{=  
^jE8 "G*  
} _A~>?gJ;,  
;Sl%I+?  
快速排序: KsSIX  
-nQ(.#-n  
package org.rut.util.algorithm.support; x8o/m$[,=u  
?3y>K!D(A  
import org.rut.util.algorithm.SortUtil; ] B?NDxU  
) W/_2Q.  
/** Gzc`5n{"  
* @author treeroot \OwCZ!`7i  
* @since 2006-2-2 s=>^ 8[0O  
* @version 1.0  Pm"nwm  
*/  OK(xG3T  
public class QuickSort implements SortUtil.Sort{ ~X(2F#{<{  
AD~_n ^  
/* (non-Javadoc) B8~bx%)3T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zyB>peAp6j  
*/ INEE 37%  
public void sort(int[] data) { ~wQ M ?h  
quickSort(data,0,data.length-1); 'Ll'8 ps  
} S.; ahce  
private void quickSort(int[] data,int i,int j){ wlFK#iK  
int pivotIndex=(i+j)/2; &N*l?7(  
file://swap c"diNbm[  
SortUtil.swap(data,pivotIndex,j); ;]l`Q,*OXb  
"^oU&]KQJ  
int k=partition(data,i-1,j,data[j]); cI'su?  
SortUtil.swap(data,k,j); uhU'm@JZ  
if((k-i)>1) quickSort(data,i,k-1); /5X_gjOL,  
if((j-k)>1) quickSort(data,k+1,j); #wZbG|%  
0|6Y% a\U  
} PXF u  
/** Vy6~O|68=  
* @param data ^"iJ  
* @param i q)3QmA~  
* @param j T>|Y_3YO_a  
* @return OHv4Yy]$B  
*/ Md&K#)9,(  
private int partition(int[] data, int l, int r,int pivot) { Dxe]LES\]  
do{ |$C fm}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \olY)b[  
SortUtil.swap(data,l,r); Z>[n~{-,p  
} 0|kH0c,T-  
while(l SortUtil.swap(data,l,r); 8p#V4liE  
return l; $ I J^  
} j8+>E ?nm  
KMx '(  
} b!qlucA eE  
6OR)97  
改进后的快速排序: kZ=2# .  
n}C0gt-  
package org.rut.util.algorithm.support;  i (`Q{l  
IEe;ygL#  
import org.rut.util.algorithm.SortUtil; MaLH2?je^n  
'Hsd7Dpi}  
/** n5y0$S/ D  
* @author treeroot '$[a-)4  
* @since 2006-2-2 n72kJ3u.  
* @version 1.0 &7 9F Uac  
*/ P('bnDU  
public class ImprovedQuickSort implements SortUtil.Sort { vDyGxU!#\  
fg/hUUl  
private static int MAX_STACK_SIZE=4096; U ]7;K>.T  
private static int THRESHOLD=10; %' /^[j#  
/* (non-Javadoc) \hdil`{>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :kC*<f\  
*/ !+DhH2;)F  
public void sort(int[] data) { o(C;;C(*{  
int[] stack=new int[MAX_STACK_SIZE]; jW{bP_,"  
ZAgtVbO7  
int top=-1; >`<qa!9  
int pivot; o7^0Lo5Z?  
int pivotIndex,l,r; .LGA0  
xyHv7u%*  
stack[++top]=0; z'*{V\  
stack[++top]=data.length-1; \wR\i^  
bc;?O`I<  
while(top>0){ o*3\xg  
int j=stack[top--]; -"I9`  
int i=stack[top--]; 3_>=Cv}  
CSH*^nk':O  
pivotIndex=(i+j)/2; !b$]D?=}  
pivot=data[pivotIndex]; @+a}O  
-;Te+E_  
SortUtil.swap(data,pivotIndex,j); )x35  
ZH`(n5  
file://partition ^O}J',Fm%f  
l=i-1; qC3PKlhv6  
r=j; u4'B  
do{ eIOMW9Ivt  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xZ(d*/6E  
SortUtil.swap(data,l,r); 53?Ati\Y)  
} mC3:P5/c  
while(l SortUtil.swap(data,l,r); R,fAl"wMu  
SortUtil.swap(data,l,j); gGx<k3W^  
ND/oKM+?  
if((l-i)>THRESHOLD){ h gu\~}kD  
stack[++top]=i; 6!8uZ>u%Vg  
stack[++top]=l-1; t#%J=zF{  
} `~\8fN  
if((j-l)>THRESHOLD){ m}f{o  
stack[++top]=l+1; !3{. V\P)  
stack[++top]=j; d$8K,-M  
} 79I"F'  
NErvX/qK  
} +??pej]Rp  
file://new InsertSort().sort(data); { R/e1-;  
insertSort(data); ~S$ex,~  
} Ec^2tx"=  
/** ["e;8H[K)%  
* @param data umt`0m. :  
*/ ,(]k)ym/  
private void insertSort(int[] data) { "rVM23@ tq  
int temp; Asy2jw\V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D={$l'y9p  
} ],vid1E  
} ~6+Um_A_L  
} c:+UC  
b`ksTO`}x  
} HBs 6:[q  
qIB2eCXw  
归并排序: FEX67A8 /;  
;9q$eK%d  
package org.rut.util.algorithm.support; /O`R9+;  
@Fzw_qr M  
import org.rut.util.algorithm.SortUtil; ,@I\'os  
GIfs]zVr`  
/** Z-yoJZi  
* @author treeroot 5kADvi.  
* @since 2006-2-2 >U?#'e{qW  
* @version 1.0 !)}D_9{  
*/ 1:_}`x=hM  
public class MergeSort implements SortUtil.Sort{ L">m2/ HG  
c._!dq&#R  
/* (non-Javadoc) j,Qb'|f5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M:L-j{?y_  
*/ v- p8~u1N  
public void sort(int[] data) { >FJK$>[1:p  
int[] temp=new int[data.length]; Y![8-L|Q  
mergeSort(data,temp,0,data.length-1); t~.^92]s|  
} ad9u;uS  
rrq7UJ;  
private void mergeSort(int[] data,int[] temp,int l,int r){ eLbh1L  
int mid=(l+r)/2; Do5{t'm3  
if(l==r) return ; i[w&!mn%  
mergeSort(data,temp,l,mid); B9 ,  
mergeSort(data,temp,mid+1,r); j^eM i  
for(int i=l;i<=r;i++){ kBY#= e).  
temp=data; |tz{Es<`B  
} _X@ Q`d  
int i1=l; 88 ca  
int i2=mid+1; t{`-G*^  
for(int cur=l;cur<=r;cur++){ BqdGU-Q  
if(i1==mid+1) 9;rZ)QD  
data[cur]=temp[i2++]; ;yCtk ~T%  
else if(i2>r) 6zi Mf  
data[cur]=temp[i1++]; Zu>CR_C  
else if(temp[i1] data[cur]=temp[i1++]; XpA|<s  
else &)|f|\yh"  
data[cur]=temp[i2++]; lwo,D}  
} B B^81{A  
} : qV|rih_Q  
>S S^qjh/  
} A0Q1"b=  
E.-2 /'i  
改进后的归并排序: )}vUYTU1  
tf1Y5P$  
package org.rut.util.algorithm.support; 6UuM `eu  
|uX&T`7?-  
import org.rut.util.algorithm.SortUtil; }.=@^-JBA5  
AJ6O>Euq  
/** }:1qK67S  
* @author treeroot I*mBU^<9V  
* @since 2006-2-2 =/4}!B/  
* @version 1.0 84s:cO  
*/ 2P{! n#"  
public class ImprovedMergeSort implements SortUtil.Sort { \lyHQ-gWhc  
BZjL\{IW  
private static final int THRESHOLD = 10; W 9bpKmc  
6)FM83zk)K  
/* w;J#+ik  
* (non-Javadoc) yA`,ns&n  
* :K(+ KN(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f917F.1 I  
*/ k9c`[M  
public void sort(int[] data) { Xob(4  
int[] temp=new int[data.length]; D2io3Lo$ov  
mergeSort(data,temp,0,data.length-1); }/g1  
} G {a;s-OA3  
Yi19VU|/  
private void mergeSort(int[] data, int[] temp, int l, int r) { B0gs<E  
int i, j, k; J`wx72/-ZW  
int mid = (l + r) / 2; U]ZI_[\'U  
if (l == r) \tdYTb.  
return; ^Nysx ~6  
if ((mid - l) >= THRESHOLD) "tj]mij2)G  
mergeSort(data, temp, l, mid); [.;8GMW  
else clM6R  
insertSort(data, l, mid - l + 1); -&QpQ7q1  
if ((r - mid) > THRESHOLD) NIC.c3  
mergeSort(data, temp, mid + 1, r); 9D yy&$s  
else q@Zeu\T,*#  
insertSort(data, mid + 1, r - mid); nzU0=w}V  
59?$9}ob  
for (i = l; i <= mid; i++) { HLh]*tQG  
temp = data; lvUWs  
} ESe$6)P  
for (j = 1; j <= r - mid; j++) { KnK\X>:  
temp[r - j + 1] = data[j + mid]; C4|79UG>s  
} j"&Oa&SH  
int a = temp[l]; ,ZnL38GW  
int b = temp[r]; lnV!Xuf  
for (i = l, j = r, k = l; k <= r; k++) { cQ0+kX<  
if (a < b) { Tcq@Q$H  
data[k] = temp[i++]; SWNT}{x]  
a = temp; _G%kEt_4  
} else { jLEO-<)-)  
data[k] = temp[j--]; c2d1'l]n  
b = temp[j]; nNRc@9Lt  
} )xTu|V   
} 5L\Im^  
} @X_)%Y-^O  
e^hI[LbNC  
/** 8=mx5Gwz-  
* @param data Nm3CeU  
* @param l \r &(l1R  
* @param i 'tVe#oI  
*/ Wa%p+(\<uB  
private void insertSort(int[] data, int start, int len) { X C '|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <h`}I3Ao  
} =z}M(<G  
} T`Xz*\}Zb  
} >~T2MlRux  
} [kI[qByf  
,4(m.P10  
堆排序: WX $AOnEv  
5"Y:^_8  
package org.rut.util.algorithm.support; hP jL  
~e+pa|lO  
import org.rut.util.algorithm.SortUtil; EsLtC5]  
VJtRL')  
/** <"LA70Hkk  
* @author treeroot B> zQ[e@t  
* @since 2006-2-2 kO,vHg$  
* @version 1.0 <ol? 9tm  
*/ +^%0/0e  
public class HeapSort implements SortUtil.Sort{ @$?*UI6y  
F4g3l    
/* (non-Javadoc) ~JOC8dO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0|(6q=QK  
*/ _No<fz8  
public void sort(int[] data) { 0Rh*SoYrC  
MaxHeap h=new MaxHeap(); z@xkE ,j>  
h.init(data); u"kB`||(  
for(int i=0;i h.remove(); s18A  
System.arraycopy(h.queue,1,data,0,data.length); Ia>~ph#]{`  
} [Y6ZcO/-i  
gy/bA  
private static class MaxHeap{ IZZ $p{  
~|`jIqU  
void init(int[] data){ G\*`%B_ n  
this.queue=new int[data.length+1]; A)nE+ec1  
for(int i=0;i queue[++size]=data; n5?7iU&JIo  
fixUp(size); ymA8`k5>@  
} `(@{t:L  
} ABhQ7 x|  
p1,.f&(f  
private int size=0; z-`4DlJUS  
IVG77+O# }  
private int[] queue; /ASpAl[J  
A*? Qm  
public int get() { zB+zw\ncN  
return queue[1]; @G=_nZxv  
} YU1z\pK  
f7 zGz  
public void remove() { aOW$H:b  
SortUtil.swap(queue,1,size--); 5K$d4KT  
fixDown(1); +kOXa^K  
} _;G|3>5u  
file://fixdown e]smnf  
private void fixDown(int k) { ;vgaFc]  
int j; \B8[UZA.&  
while ((j = k << 1) <= size) { 2!}rH w  
if (j < size %26amp;%26amp; queue[j] j++; .IORvP-M&  
if (queue[k]>queue[j]) file://不用交换 X1%_a.=VF  
break; eo4v[V&  
SortUtil.swap(queue,j,k); p 4lB#  
k = j; +InFv" wt  
} 4J2C# Cs  
} Oa7jLz'i  
private void fixUp(int k) { uq@_DPA7  
while (k > 1) { 4-q8:5  
int j = k >> 1; _MUSXB'  
if (queue[j]>queue[k]) 2;YL+v2  
break; E)( Rhvij  
SortUtil.swap(queue,j,k); ,}$[;$ye  
k = j; +K"d\<  
} U p: M[S  
} 3F9AnS  
-2y>X`1Y  
} B%KfB VC  
w'P!<JaZ  
} h7>`:~  
\v([,tiW%  
SortUtil: `HsI)RmX  
f.Ms3))  
package org.rut.util.algorithm; I>spJ5ls  
)dI  `yf  
import org.rut.util.algorithm.support.BubbleSort; Y/G~P,9  
import org.rut.util.algorithm.support.HeapSort; n7'X.=o7  
import org.rut.util.algorithm.support.ImprovedMergeSort; Na_O :\x#  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^9oJuT!tu  
import org.rut.util.algorithm.support.InsertSort; GP=&S|hi  
import org.rut.util.algorithm.support.MergeSort; "A&HNkRz  
import org.rut.util.algorithm.support.QuickSort; 6zW3!_tz  
import org.rut.util.algorithm.support.SelectionSort; k!sk\~>YO  
import org.rut.util.algorithm.support.ShellSort; t x#(K#/  
wRj&k(?*  
/** v,,Dz8!Ty  
* @author treeroot Y kcN-  
* @since 2006-2-2 =BBDh`$R  
* @version 1.0  8=j_~&*  
*/ |kkg1M#  
public class SortUtil { A$ o?_  
public final static int INSERT = 1; & 13#/  
public final static int BUBBLE = 2; 1WLaJ%Fv  
public final static int SELECTION = 3; :%"$8o*0W  
public final static int SHELL = 4; psE&Rx3)  
public final static int QUICK = 5; !"N-To-c  
public final static int IMPROVED_QUICK = 6; UWq[K&vQZ  
public final static int MERGE = 7; T &kr IZw  
public final static int IMPROVED_MERGE = 8; R]Pv=fn  
public final static int HEAP = 9; M`.v/UQn  
{~eVZVv  
public static void sort(int[] data) { %n>*jFC  
sort(data, IMPROVED_QUICK); L2^M#G@t  
} i 9wk)  
private static String[] name={ (Zv/(SE5%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" w;KNS'   
}; m}?(c)ST  
Y @[Dy  
private static Sort[] impl=new Sort[]{ hZLwg7X!   
new InsertSort(), ;Fm7!@u^0  
new BubbleSort(), WY" `wM  
new SelectionSort(), H6]z98  
new ShellSort(), wdTjJf r  
new QuickSort(), Ce_E S.  
new ImprovedQuickSort(), $${9 %qPzb  
new MergeSort(), D$G:#z*  
new ImprovedMergeSort(), \*6Ld %:h$  
new HeapSort() :sXn*k4v  
}; W\JwEb9Y  
B]5G"4,  
public static String toString(int algorithm){ 4Rev7Mc  
return name[algorithm-1]; h;2n2.Q  
} A>W8^|l6+-  
p1(<F_Kta  
public static void sort(int[] data, int algorithm) { rP7f~"L  
impl[algorithm-1].sort(data); @b"J FB|  
} %oqC5O6  
e`Vb.E)  
public static interface Sort { AH#klYK  
public void sort(int[] data); w-9fskd6e  
} ([L5i&DT  
0'4V*Y  
public static void swap(int[] data, int i, int j) { fI1,L"  
int temp = data; @`Foy  
data = data[j]; ]-G10p}Ph-  
data[j] = temp; !L_\6;aP,x  
} LHJjPf)F  
} ?:XbZ"25pJ  
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