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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。 |t!kD(~r  
插入排序: ]j~V0 1p/e  
0}PW<lU-  
package org.rut.util.algorithm.support; 7^ITedW@  
]xCJ3.9  
import org.rut.util.algorithm.SortUtil; -s,^_p{H  
/** 25::z9i  
* @author treeroot tl (2=\  
* @since 2006-2-2 o(u&n3Q'  
* @version 1.0 '_@Y  
*/ T7'njaLec  
public class InsertSort implements SortUtil.Sort{ >hJ$~4?  
jY(' ?3  
/* (non-Javadoc) fJH09:@^%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w\:-lXw  
*/ :0Rd )*k,v  
public void sort(int[] data) { B= jJ+R  
int temp; 0;#%KC,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SirjWYap  
} Wr a W  
} C;1A$]bk  
} =%%\b_\L  
w9SPkPkYE  
} Tu?+pz`h  
SWN i@  
冒泡排序: Nh^T,nv*l  
{W)Kz_  
package org.rut.util.algorithm.support; `M6!V  
E*:!G  
import org.rut.util.algorithm.SortUtil; 1j`-lD  
Q&opnvN  
/** rh5R kiF~  
* @author treeroot lF2im5nZ?  
* @since 2006-2-2 JN .\{ Y  
* @version 1.0 /!=uM .  
*/ TUw^KSa  
public class BubbleSort implements SortUtil.Sort{ u}\F9~W-{  
}/nbv;)  
/* (non-Javadoc) X};m\Bz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) me_DONW  
*/ =!w5%|r.  
public void sort(int[] data) { v~H1Il_+  
int temp; mS p -  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *`mPPts}  
if(data[j] SortUtil.swap(data,j,j-1); zH0%; o}  
} yM}}mypS  
} $3[IlQ?  
} WS/^WxRY  
} n#uH^@#0  
+iz5%Qe<f  
} 5Q#;4  
Kfa7}f_  
选择排序: Wb+^Ue  
y>Zvose  
package org.rut.util.algorithm.support; e6z;;C@'G  
^VK-[Sz&  
import org.rut.util.algorithm.SortUtil; d rnqX-E;  
5+vCuVZ  
/** |Zr5I";  
* @author treeroot jV]'/X<  
* @since 2006-2-2 3FT%.dV^  
* @version 1.0 *Z>Yv37P  
*/ )G\23P  
public class SelectionSort implements SortUtil.Sort { K{.s{;#  
1L]7*NJe  
/* WPygmti}Be  
* (non-Javadoc) G~1#kg  
* nd3=\.(P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g0v},n  
*/ rlT[tOVAY  
public void sort(int[] data) { KE1S5Mck>  
int temp; PVP,2Yq!  
for (int i = 0; i < data.length; i++) { %C\Q{_AS  
int lowIndex = i; ]sjYxe  
for (int j = data.length - 1; j > i; j--) { ^m;dEe&@F  
if (data[j] < data[lowIndex]) { dB+x,+%u+  
lowIndex = j; ?VrZM  
} a/;u:"  
} Y]/(R"-2G  
SortUtil.swap(data,i,lowIndex); q>/# P5V  
} blNE$X+0|  
} $e& ( ncM  
9!b,!#=  
} (f#QETiV  
)SQ*"X4"  
Shell排序: / d=i 0E3  
r=Z#"68$  
package org.rut.util.algorithm.support; S+3'C  
%Fig`qX  
import org.rut.util.algorithm.SortUtil; hLPg=8nJ_  
; Xrx>( n  
/** _P 0,UgZz  
* @author treeroot F, Y@  
* @since 2006-2-2 et(/`  
* @version 1.0 -}`ES]  
*/ [_hHZMTH  
public class ShellSort implements SortUtil.Sort{ @qmONQ eb  
9r-]@6;  
/* (non-Javadoc) TC[_Ip&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) py`RH )  
*/ F(>']D9$.  
public void sort(int[] data) { cN0|! nm*  
for(int i=data.length/2;i>2;i/=2){ 1|bu0d\]  
for(int j=0;j insertSort(data,j,i); R#i|n< x  
} 0@d)DLM?  
} ZHUA M59bx  
insertSort(data,0,1); qg#TE-Y`  
} f ZL%H0&  
x|i"x+o  
/** ;F9<Yv  
* @param data oEbgyT gB  
* @param j |Ak>kQJ(1z  
* @param i P1;T-.X~&  
*/ g9|B-1[  
private void insertSort(int[] data, int start, int inc) { L@2%a'  
int temp; #c@Dn.W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \?c0XD  
} ^8$CpAK]M  
} }$!bD  
} Ni*f1[sI<  
mE(EyB<  
} XIh2Y\33ys  
OLUQjvnU  
快速排序: ,oX48Wg_+  
4b=hFwr[?  
package org.rut.util.algorithm.support; x- kCNy  
?Y+xuY/t  
import org.rut.util.algorithm.SortUtil; ot]eaad  
{[G2{ijRz  
/** s|rlpd4y  
* @author treeroot (__=*ew  
* @since 2006-2-2 4)BZ%1+  
* @version 1.0 bhe~ekb  
*/ !|_b}/  
public class QuickSort implements SortUtil.Sort{ SQ| pH"  
9+"D8J7  
/* (non-Javadoc) Q W#]i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r?Jxl<  
*/ kCfSF%W&  
public void sort(int[] data) { F,Y,0f@4U9  
quickSort(data,0,data.length-1); VvN52 qeL  
} '$pT:4EuGq  
private void quickSort(int[] data,int i,int j){ `}.K@17  
int pivotIndex=(i+j)/2; h=SQ]nV{  
file://swap 1MHP#X;|  
SortUtil.swap(data,pivotIndex,j); m6^Ua  
X).UvPZ/  
int k=partition(data,i-1,j,data[j]); 35z]pn%L  
SortUtil.swap(data,k,j); ;8/w'oe *j  
if((k-i)>1) quickSort(data,i,k-1); yi<&'L;   
if((j-k)>1) quickSort(data,k+1,j); o0$R|/>i  
o6sL~ *hQ  
} 26JP<&%L  
/** 3xef>Xv=  
* @param data n={} ='  
* @param i \kcJF'JFA0  
* @param j Jfa=#`    
* @return 2 P+RfE`o  
*/ BT;hW7){9  
private int partition(int[] data, int l, int r,int pivot) { rHPda?&H  
do{ K];nM}<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O-Hu:KuIf  
SortUtil.swap(data,l,r); rB;` &)-  
} eO;i1>  
while(l SortUtil.swap(data,l,r); y[[f?rxz>  
return l; txQyHQ)@  
} Z l.}=  
EQ`;=I3J9y  
} HmKvu"3  
Yao>F--?  
改进后的快速排序: 5x?eu n  
(UDF^  
package org.rut.util.algorithm.support; 5w"f.d'  
]\5@N7h  
import org.rut.util.algorithm.SortUtil; )V~Fl$A  
;~T)pG8IS  
/** j} XTa[  
* @author treeroot 6cz%>@  
* @since 2006-2-2 I7TdBe-  
* @version 1.0 2Fi>nJ  
*/ "Pi\I9M3  
public class ImprovedQuickSort implements SortUtil.Sort { bcL>S$B  
,6Sa  
private static int MAX_STACK_SIZE=4096; ^_6%dKLK  
private static int THRESHOLD=10; _?>!Bz m  
/* (non-Javadoc) 4NN-'Z>a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 lH#+@  
*/ 7 vUfA"  
public void sort(int[] data) { #S2LQ5U  
int[] stack=new int[MAX_STACK_SIZE]; @QI]P{   
k1Zu&4C\  
int top=-1; hnZI{2XzBE  
int pivot; c'OJodpa  
int pivotIndex,l,r; -v?,{?$0  
hPr*<2mp  
stack[++top]=0; Sxf|gDC  
stack[++top]=data.length-1; nL!h hseH  
RrKAgw  
while(top>0){ hj64ES#x  
int j=stack[top--]; u^a\02aV[  
int i=stack[top--]; ya5a7  
x n)FE4  
pivotIndex=(i+j)/2; 8+Al+6d|!  
pivot=data[pivotIndex]; h`+Gs{1qw  
IrQ8t!  
SortUtil.swap(data,pivotIndex,j); Pd!;z=I  
z"o;|T:  
file://partition b7R#tT  
l=i-1; C>7Mx{!H  
r=j; fHvQ9*T  
do{ f^](D'L?D  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #b\&Md|;  
SortUtil.swap(data,l,r); 8yz A W&q  
} 2!>phE  
while(l SortUtil.swap(data,l,r); H^xrFXg~z  
SortUtil.swap(data,l,j); $UW!tg*U&  
heoOOP(#  
if((l-i)>THRESHOLD){ Q>7#</i\.  
stack[++top]=i; $de_>  
stack[++top]=l-1; (Tp+43v  
} 8=gr F  
if((j-l)>THRESHOLD){ :Q2\3  
stack[++top]=l+1; xou7j   
stack[++top]=j; Dntcv|%u  
} $D5[12X  
+JZ<9,4  
} G?\o_)IJ  
file://new InsertSort().sort(data); KIn^,d0H  
insertSort(data); y$s}-O]/-  
} S<Q8kW:  
/** M['25[  
* @param data )<G>]IP<  
*/ d|TRP,y  
private void insertSort(int[] data) { seY0"ym&e  
int temp; ?"+' OOqik  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8F($RnP3  
} +P|$T:b  
} 7c!oFwM  
} X0b :Oiw  
-`wGF#}y(=  
} a8M.EFa:  
DamLkkoA  
归并排序: 0K>rc1dy  
9F0B-aZ  
package org.rut.util.algorithm.support; 7}Z.g9<  
QI~s~j  
import org.rut.util.algorithm.SortUtil; \sHM[n F0  
g_;5"  
/** .Y'kDuUu  
* @author treeroot B;4hI?  
* @since 2006-2-2 pW8pp?  
* @version 1.0 9UOx~Ty  
*/ #[sC H  
public class MergeSort implements SortUtil.Sort{ %_M B-  
1mOZ\L!m*  
/* (non-Javadoc) o"[P++qd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nhk +9  
*/ Q !5Tw  
public void sort(int[] data) { NF0IF#;a  
int[] temp=new int[data.length]; W()FKP\??!  
mergeSort(data,temp,0,data.length-1); ERL(>)  
} ,8o]XFOr  
R8EDJ2u#  
private void mergeSort(int[] data,int[] temp,int l,int r){ q "bpI8j  
int mid=(l+r)/2; 598 xV|TON  
if(l==r) return ; aFo%B; 8m  
mergeSort(data,temp,l,mid); 6`NsX  
mergeSort(data,temp,mid+1,r); HG@!J>YaD  
for(int i=l;i<=r;i++){ uI%h$  
temp=data; Q9K Gf;  
} R.A}tV=j#  
int i1=l; 6BW-AZc  
int i2=mid+1; |F<U;xV$p  
for(int cur=l;cur<=r;cur++){ }n=Tw92g  
if(i1==mid+1) .)|jBC8|}  
data[cur]=temp[i2++]; [HF)d#A  
else if(i2>r) $>/J8iB  
data[cur]=temp[i1++]; y>2v 9;Qp  
else if(temp[i1] data[cur]=temp[i1++]; %'\D _W&  
else pSQ3 SM  
data[cur]=temp[i2++]; wX#\\Jgi  
} U,iTURd  
} #` z!f0 P  
oLruYSaD  
} dp)lHBV  
)~d2`1zGS  
改进后的归并排序: ^!{oyw   
9<7Q{  
package org.rut.util.algorithm.support; $0LlaN@e  
TW3:Y\p  
import org.rut.util.algorithm.SortUtil; wgLS9.  
LU?#{dZ  
/** CvQ LF9|  
* @author treeroot HLYM(Pz  
* @since 2006-2-2 =Z#tZ{"  
* @version 1.0 A6iyJFm D  
*/ i=o>Bl@f  
public class ImprovedMergeSort implements SortUtil.Sort { -rH4/Iby  
<py~(q  
private static final int THRESHOLD = 10; 2yq.<Wz<  
ui9gt"qS`  
/* +6gS]  
* (non-Javadoc) b@1QE  
* 7azxqa5:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2#/ KS^  
*/ MLBZmM '  
public void sort(int[] data) { uO[4 WZ  
int[] temp=new int[data.length]; ]qVJ>  
mergeSort(data,temp,0,data.length-1); ,z%F="@b9  
} Crpk q/M  
Om}&`AP};  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7Fy^K;V"  
int i, j, k; D>G&aQ  
int mid = (l + r) / 2; _rs#h)  
if (l == r) TlBLG.-^  
return; /cI]Z^&  
if ((mid - l) >= THRESHOLD)  k[vn:  
mergeSort(data, temp, l, mid); v Z]gb$  
else {B\.8)&8  
insertSort(data, l, mid - l + 1); &-cI|  
if ((r - mid) > THRESHOLD) MIR17%G  
mergeSort(data, temp, mid + 1, r); Q&QR{?PMD  
else 7/*; rT  
insertSort(data, mid + 1, r - mid); oAvJ"JH@i  
oR-_=U^  
for (i = l; i <= mid; i++) { t9K.Jc0  
temp = data; zv0RrF^  
} 2tWUBt\,g  
for (j = 1; j <= r - mid; j++) { (O`=$e  
temp[r - j + 1] = data[j + mid]; +IS$Un  
} r<|\4zIo/  
int a = temp[l]; >F-J}P  
int b = temp[r]; ._FgQ` `PL  
for (i = l, j = r, k = l; k <= r; k++) { v(: VUo]H  
if (a < b) { Zfb:>J@h6  
data[k] = temp[i++]; (n`\b47  
a = temp; qtgK}*9ptv  
} else { %mcuYR'D}  
data[k] = temp[j--]; G^2"\4R]p  
b = temp[j]; zG @!(  
} G&uj}rj  
} PTePSj1N  
} *=2jteG=3.  
ZV Gw@3  
/** $%t{O[ (  
* @param data fi?[ e?|c@  
* @param l %pwm34  
* @param i MfL q h  
*/ ^k)f oD  
private void insertSort(int[] data, int start, int len) { kW,yZ.?f  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); T|{BT! W1E  
} |f>y"T+1  
} (g4g-"rc  
} !Uj !Oy  
} ^mz_T+UOe  
gj'ar  
堆排序: %^5$=w  
 (K?[gI  
package org.rut.util.algorithm.support; h h8UKEM-  
17 j7j@s)  
import org.rut.util.algorithm.SortUtil; ]&r/H17  
N{q'wep  
/** r+lY9 l  
* @author treeroot Y]Fq)  -  
* @since 2006-2-2 !^m5by  
* @version 1.0 _nRshTt`V&  
*/ M"_XaVl  
public class HeapSort implements SortUtil.Sort{ T\WNT#My  
}pTj8Tr  
/* (non-Javadoc) Fza)dJ 7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ssHRbE  
*/ >`NM?KP s  
public void sort(int[] data) { 4u(}eE f7  
MaxHeap h=new MaxHeap(); ebao7r5@  
h.init(data); 4p-$5Fk8}  
for(int i=0;i h.remove(); -p;o e}|  
System.arraycopy(h.queue,1,data,0,data.length); X,q= JS  
} pGcc6q1  
{jc~s~<#  
private static class MaxHeap{ q2 f/#"k  
q%y_<Fw#E  
void init(int[] data){ sZbzY^P  
this.queue=new int[data.length+1]; O%)9t FT  
for(int i=0;i queue[++size]=data; MkYem6  
fixUp(size); z44uhRh  
} 21WqLgT3 4  
} z`Q5J9_<cV  
 $}F]pa[  
private int size=0; g9 yCd(2<5  
^Qr P.l#pZ  
private int[] queue; n$P v2qw  
lLJb3[ e.  
public int get() { Pw7'6W1  
return queue[1]; YVaQ3o|!  
} &t8_J3?Z  
05zHLj  
public void remove() { ~XxD[T5  
SortUtil.swap(queue,1,size--); C= m Y  
fixDown(1); vV'^HD^v  
} iwVra"y  
file://fixdown K;97/"  
private void fixDown(int k) { Xo*$|9[.  
int j; R5i8cjKZ?w  
while ((j = k << 1) <= size) { dyp] y$  
if (j < size %26amp;%26amp; queue[j] j++; q+:(@w6  
if (queue[k]>queue[j]) file://不用交换 feopO j6~+  
break; ]_=HC5"  
SortUtil.swap(queue,j,k); 8qc %{8  
k = j; (o:Cxh V  
} ^GAdl}  
} oy`m:Xp  
private void fixUp(int k) { g:6yvEu$ -  
while (k > 1) { A8RT3OiXA  
int j = k >> 1; (gf\VYM-7  
if (queue[j]>queue[k]) FEZ6X  
break; KGWENX_U  
SortUtil.swap(queue,j,k); q%'ovX(dm  
k = j; B~aOs>1 S]  
} \I'Zc]  
} `kv$B3  
%zD-gw>  
} UxvsSHi  
b(yO  
} KALg6DZe:  
p%ZiTrA1&D  
SortUtil: pd;-z  
"@?|Vv,vn  
package org.rut.util.algorithm; a "DV`jn  
Q)@1:(V/  
import org.rut.util.algorithm.support.BubbleSort; %~;Q_#CR/K  
import org.rut.util.algorithm.support.HeapSort; ^hHeH:@  
import org.rut.util.algorithm.support.ImprovedMergeSort; {UmCn>c  
import org.rut.util.algorithm.support.ImprovedQuickSort; (p?3#|^  
import org.rut.util.algorithm.support.InsertSort; z\h+6FCD  
import org.rut.util.algorithm.support.MergeSort; oto od  
import org.rut.util.algorithm.support.QuickSort; 7 b. -&,  
import org.rut.util.algorithm.support.SelectionSort; 0C p}  
import org.rut.util.algorithm.support.ShellSort; i]-gO  
F^NR qE  
/** +{%4&T<nHw  
* @author treeroot 55cldo   
* @since 2006-2-2 ]6;AK\9TM  
* @version 1.0 7, 13g)  
*/ 9HE(*S  
public class SortUtil { G}-.xj]  
public final static int INSERT = 1; ?|7+cz$g  
public final static int BUBBLE = 2; D{4hNO  
public final static int SELECTION = 3; Uaj=}p\+.p  
public final static int SHELL = 4; Ntn md  
public final static int QUICK = 5; 4QN;o%,  
public final static int IMPROVED_QUICK = 6;  b:QFD|  
public final static int MERGE = 7; 0;h1LI)  
public final static int IMPROVED_MERGE = 8; 3uw7 J5x  
public final static int HEAP = 9; /h M>dkwu  
yK B[HpU-  
public static void sort(int[] data) { `I>K?  
sort(data, IMPROVED_QUICK); xI: 'Hk1  
} +.lWck  
private static String[] name={ ;a3nH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,4Fqvg  
}; pG( knu  
y9L#@   
private static Sort[] impl=new Sort[]{ ye|a#a9N  
new InsertSort(), oyt//SE  
new BubbleSort(), {~^)-^Wt:  
new SelectionSort(), G; [A Q:Iy  
new ShellSort(), JZ% F  
new QuickSort(), $vLV< y07  
new ImprovedQuickSort(), ,/:a77  
new MergeSort(), &7T H V  
new ImprovedMergeSort(), P082.:q"  
new HeapSort() 2E2}|: ||&  
}; rH9}nL  
<s >/< kW:  
public static String toString(int algorithm){ [/Z'OV"tU  
return name[algorithm-1]; `,Nn4  
} kxW>Da<6  
!"J#,e|  
public static void sort(int[] data, int algorithm) { p}A4K#G  
impl[algorithm-1].sort(data); dT)KvqX  
} 8>{W:?I  
H 1D;:n  
public static interface Sort { b'1d<sD  
public void sort(int[] data); , imvA5  
} n+qVT4o  
& fSc{/  
public static void swap(int[] data, int i, int j) { E)O|16f|>  
int temp = data; K) `:v|d  
data = data[j]; 1 j12Qn@]  
data[j] = temp; bez'[Y{  
} R5eB,FN  
} -t 6R!ZI  
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