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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。 ^|cax| >  
插入排序: Bthp_cSmLs  
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package org.rut.util.algorithm.support; S=`#X,Wo  
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import org.rut.util.algorithm.SortUtil; AASS'H@  
/** XpT~]q}  
* @author treeroot ,@8*c0Y~<!  
* @since 2006-2-2 gI+dyoh  
* @version 1.0 ;![rwra  
*/ [](] "r  
public class InsertSort implements SortUtil.Sort{ t"&qaG{  
<EuS6Pg  
/* (non-Javadoc) A] f^9F@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6lQP+! EF  
*/ $ 3.Y2&$T  
public void sort(int[] data) { M{XBmDfN  
int temp; LH q~`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W ;P8'_2Y  
} fvV5G,lD3h  
} '#612iZo  
} R& HkWe  
x\Kt}/97e  
} nX+c HF  
/+?eSgM/  
冒泡排序: SJ&+"S&  
>ti)m >f  
package org.rut.util.algorithm.support; 4FJA+  
f;3k Yh^4  
import org.rut.util.algorithm.SortUtil; %Lfy!]Ru  
Q\*zF,ek  
/** mFuHZ)iQG  
* @author treeroot ua%j}%G(  
* @since 2006-2-2 "'I |#dKoG  
* @version 1.0 N/8B@}@n  
*/ 5Ln !>,  
public class BubbleSort implements SortUtil.Sort{ AXPdgo6  
zw%1 a 3!  
/* (non-Javadoc) LcmZ"M6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vF'Y; M  
*/ ujeN|W  
public void sort(int[] data) { d PF*G$  
int temp; F Xp_`9.zH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xHuw ?4  
if(data[j] SortUtil.swap(data,j,j-1); ;^so;>F  
} cwI3ANV  
} X GDJCN  
} B3&ETi5NTU  
}  y7.oy"  
7m;<b$  
} $`"$ZI6[  
W,[iRmxn  
选择排序: dY.NQ1@"  
'F Cmbry  
package org.rut.util.algorithm.support; ;% l0Ml>  
7Q # A  
import org.rut.util.algorithm.SortUtil; fOz.kK[]  
\_t[\&.a}  
/** j.SE'a_  
* @author treeroot uB+ :sX-L  
* @since 2006-2-2 z v:o$2Z  
* @version 1.0 L?b;TjLe  
*/ z /f0 .RJ  
public class SelectionSort implements SortUtil.Sort { *\$ko)x?c  
]oyWJ#8  
/* !w:pb7+G  
* (non-Javadoc) J''lOj(@  
* 2:&QBwr+;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) saVX2j6Y  
*/ VN]"[  
public void sort(int[] data) { muIJeQ.C  
int temp; co>IJzg  
for (int i = 0; i < data.length; i++) { 5ih5=qX  
int lowIndex = i; (xMq(g  
for (int j = data.length - 1; j > i; j--) { s mqUFo  
if (data[j] < data[lowIndex]) { k3&/Ei5  
lowIndex = j; m%)S <L7 l  
} ]|B_3* A  
} O]Q8&(  
SortUtil.swap(data,i,lowIndex); /7K7o8g  
} XPMvAZL  
} fs8C ^Ik>~  
Ba9"IXKH  
} OwLJS5r@<-  
|5\: E}1  
Shell排序: <E7y:%L[Go  
Eg$Er*)h8  
package org.rut.util.algorithm.support; UW-`k1  
s"X0Jx}  
import org.rut.util.algorithm.SortUtil; r-&* `Jh  
/n3SE0Y  
/** q`HK4~i,  
* @author treeroot )H%Rw V#  
* @since 2006-2-2 #kAk d-QY6  
* @version 1.0 Y$FhV~m  
*/ kDc/]Zb%  
public class ShellSort implements SortUtil.Sort{ 1c:/c|shQ_  
/!W',9ua6  
/* (non-Javadoc) /cx Ei6I-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) py9`q7F  
*/ pB,l t6  
public void sort(int[] data) { 6V-JyTcxGI  
for(int i=data.length/2;i>2;i/=2){ ! Y'~?BI  
for(int j=0;j insertSort(data,j,i); +3?.Vb%jY  
} -9$.&D|  
} hIwqSKq9  
insertSort(data,0,1); 2.&%mSN  
} Uk4G9}I  
K]ds2Kp&  
/** `&SBp }W}  
* @param data $K_-I8e|  
* @param j sDyt3xN  
* @param i i[PksT#p  
*/ M3H^s_  
private void insertSort(int[] data, int start, int inc) { gHVD,Jr  
int temp; i [6oqZ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `5Em: 8 M  
} l,ra24  
} [<VyH.  
} x.>[A^  
N0UZ%,h\  
} $GIup5  
+aRHMH  
快速排序: ZnD(RM  
3s Mmg`  
package org.rut.util.algorithm.support; '#CYw=S+  
l"9$lF}  
import org.rut.util.algorithm.SortUtil; A7TV-eWG  
_&PF(/w  
/** 9f$3{ g{m  
* @author treeroot CMHg]la  
* @since 2006-2-2 H;RgYu2J  
* @version 1.0 x$6FvgP(  
*/ D~@lpcI  
public class QuickSort implements SortUtil.Sort{ l#|M.V6G  
YG>6;g)Zm  
/* (non-Javadoc) ^Rmrre`uU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wW0m}L  
*/ ex)U'.^  
public void sort(int[] data) { PpR eqmo  
quickSort(data,0,data.length-1); 4 zipgw  
} BmCBC,j<v>  
private void quickSort(int[] data,int i,int j){  fG|+ !  
int pivotIndex=(i+j)/2; KZwzQ"Hl  
file://swap Sigu p#.p  
SortUtil.swap(data,pivotIndex,j); c/`Rv{ *'o  
Kg#s<#h  
int k=partition(data,i-1,j,data[j]); ()yOK$"  
SortUtil.swap(data,k,j); a`S3v  
if((k-i)>1) quickSort(data,i,k-1); n]bxG8~t  
if((j-k)>1) quickSort(data,k+1,j); <`*v/D7\02  
^%Fn|U\u  
} u&$1XZ!es  
/** rvBKJ!b0  
* @param data =8x-+u5}rK  
* @param i ]`eJSk.  
* @param j +g8uV hC  
* @return f9J]-#Iif  
*/ Oa -~}hN  
private int partition(int[] data, int l, int r,int pivot) { $ q$\  
do{ Ui;PmwQc&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K yp(dp>  
SortUtil.swap(data,l,r); (r$QQO) /  
} pqxBu  
while(l SortUtil.swap(data,l,r); f`_6X~ p  
return l; &}vc^io  
} }7/Ob)O  
BG2Z'WOH  
} d,%@*v]S  
=!PUKa3f<  
改进后的快速排序: ?iNihE  
X>VxE/  
package org.rut.util.algorithm.support; (1?k_!)T  
p?eQN Y  
import org.rut.util.algorithm.SortUtil; g;<_GL  
)J!=X`b  
/** aW#_"Y}v'  
* @author treeroot K6z-brvw "  
* @since 2006-2-2 [[d@P%X&  
* @version 1.0 5}_DyoV  
*/ t&Z:G<;  
public class ImprovedQuickSort implements SortUtil.Sort { 7(bE;(4  
vxx7aPjC  
private static int MAX_STACK_SIZE=4096; n{r _Xa  
private static int THRESHOLD=10; y5 bELWA  
/* (non-Javadoc) CF+:9PG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  p(Bn!  
*/ k84JDPu#  
public void sort(int[] data) { p3(&9~ s  
int[] stack=new int[MAX_STACK_SIZE]; EL-1o0 2-  
\m;"KyP+  
int top=-1; >QM$ NIf@  
int pivot; rJl'+Ae9N|  
int pivotIndex,l,r; nH]F$'rtA  
Qr l>A*  
stack[++top]=0; :ift{XR'  
stack[++top]=data.length-1; DV!) n 6  
K# dV.  
while(top>0){ Nm]\0m0p-  
int j=stack[top--]; 7lz"^  
int i=stack[top--]; 1p9+c~4l:  
z!6:Dt6^  
pivotIndex=(i+j)/2; y*5bF 0  
pivot=data[pivotIndex]; (j;6}@  
_GK3]F0  
SortUtil.swap(data,pivotIndex,j); *T'>-nm]  
<e&*Tx<8  
file://partition ?5L.]Isa5  
l=i-1; Hc{0O7  
r=j; D>Qc/+  
do{ ^J=l]  l  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "cUCB  
SortUtil.swap(data,l,r); 8?r RLM4  
} N yK7TKui  
while(l SortUtil.swap(data,l,r); |VL(#U  
SortUtil.swap(data,l,j); 8Dq;QH}  
P]G`Y>#$r  
if((l-i)>THRESHOLD){ DEw_dOJ(  
stack[++top]=i; bLysUj5[5  
stack[++top]=l-1; WurpHOJt+  
} *X K9-%3  
if((j-l)>THRESHOLD){ i>C:C>~  
stack[++top]=l+1; Ge>%?\  
stack[++top]=j; [J|)DUjt  
} *SX'Or,  
9s-op:5  
} N@>,gm@UU  
file://new InsertSort().sort(data); -/.Xf<y58  
insertSort(data); )k8=< =s  
} YEWHr>&Z  
/** 7lvUIc?krW  
* @param data s}d1 k  
*/ # Pulbk8  
private void insertSort(int[] data) { jy] hP?QG  
int temp; y4HOKJxI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [*j C  
} yVyh'd:Ik  
}  l+.E'   
} ~R]E=/m|  
~O)Uz|  
} Ok+zUA[Wu  
6ZBg/_m  
归并排序: n2Oi< )  
Ey77]\  
package org.rut.util.algorithm.support; gOI #$-L  
s7C oUd2  
import org.rut.util.algorithm.SortUtil; iAX\F`  
%($qg-x  
/** JrTSu`S('  
* @author treeroot "msCiqF{z  
* @since 2006-2-2 z^Nnt  
* @version 1.0 /(w:XTO<  
*/ bh&,*Y6=  
public class MergeSort implements SortUtil.Sort{ W>Y8 u8  
5r<%xanXW/  
/* (non-Javadoc) ,@=qaU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >eg&i(C+  
*/ =z]&E 78Y  
public void sort(int[] data) { oh`I$  
int[] temp=new int[data.length]; CJ_X:Frj)  
mergeSort(data,temp,0,data.length-1); TRrO-  
} +(5H$O{h  
R0;c'W)  
private void mergeSort(int[] data,int[] temp,int l,int r){ v#.FK:u}  
int mid=(l+r)/2; J"8bRp=/|  
if(l==r) return ; Qw^nN(K!>  
mergeSort(data,temp,l,mid); 4@|K^nT`  
mergeSort(data,temp,mid+1,r); j?1\E9&4-Q  
for(int i=l;i<=r;i++){ l!\C"f1o,  
temp=data; k0?4vA  
} Z!C\n[R/  
int i1=l; Q;{yIa$ $  
int i2=mid+1; $nQ; ++  
for(int cur=l;cur<=r;cur++){ #6_?7 (X  
if(i1==mid+1) :Tw3Oo_~S  
data[cur]=temp[i2++]; y-}lz#N  
else if(i2>r) jK\2y|&&c  
data[cur]=temp[i1++]; T1;yw1/m5\  
else if(temp[i1] data[cur]=temp[i1++]; XZuJ<]}X,  
else Z;XR%n8  
data[cur]=temp[i2++]; 5Ga>qIM  
} OekcU% C  
} gE JmMh  
o(>!T=f  
} *%'4.He7V  
$I-$X?  
改进后的归并排序: jDcE_55o  
.t xgb  
package org.rut.util.algorithm.support; VZF/2d84&w  
~*Ve>4  
import org.rut.util.algorithm.SortUtil; |A 7Yv  
9M~EH?>+[  
/** WW@/q`h  
* @author treeroot p{!aRB%  
* @since 2006-2-2 Q5r cPU>A  
* @version 1.0 tQ'E"u1  
*/ 5wRDH1z@{  
public class ImprovedMergeSort implements SortUtil.Sort { s>~!r.GC  
y ']>J+b0  
private static final int THRESHOLD = 10; J7emoD [  
6,uW{l8L  
/* 6*kY7  
* (non-Javadoc) )& %X AW{  
* I5F oh|)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,\[&%ph  
*/ O\XN/R3  
public void sort(int[] data) { )#T(2A  
int[] temp=new int[data.length]; k x6%5%  
mergeSort(data,temp,0,data.length-1); it5].A&  
} 6"[`"~9'V  
!V Zl<|  
private void mergeSort(int[] data, int[] temp, int l, int r) { :De}5BMy  
int i, j, k; >6=yxCJ  
int mid = (l + r) / 2; j3P)cz-0/L  
if (l == r) h;^h[q1'  
return; 2z:4\Y5  
if ((mid - l) >= THRESHOLD) Ngu+V  
mergeSort(data, temp, l, mid); QT9(s\u  
else k:Uyez  
insertSort(data, l, mid - l + 1); C:_!zY'z  
if ((r - mid) > THRESHOLD) * ?rw'  
mergeSort(data, temp, mid + 1, r); %$Wt"~WE"O  
else st|$Fu  
insertSort(data, mid + 1, r - mid); ZdlZ,vK^.  
$9+}$lpPd  
for (i = l; i <= mid; i++) { ^lB1- ;ng  
temp = data; 2 Nr j@q  
} Mm :6+  
for (j = 1; j <= r - mid; j++) { e~ W35Y>A  
temp[r - j + 1] = data[j + mid]; d&w g\"E  
} :'f#0ox  
int a = temp[l]; +yVz ) X  
int b = temp[r]; ^uMy|d  
for (i = l, j = r, k = l; k <= r; k++) { Q68&CO(rE  
if (a < b) { bb$1RLyRL  
data[k] = temp[i++]; Ol~sCr  
a = temp; "7JO~T+v  
} else { ^%)'wDK  
data[k] = temp[j--]; uwyzxj  
b = temp[j]; vy,ER<  
} YCj"^RC^  
} 37v!:xF!  
} ^p|MkB?uM  
%njX'7^u  
/** AGx]srl  
* @param data \d&j`UVY  
* @param l G{knO?BK  
* @param i F8Rd#^9PD  
*/ pez[qs  
private void insertSort(int[] data, int start, int len) { TixH Ehw  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7;5?2)+=6  
} w_ kHy_)  
} X<x"\Yk  
} fYuJf,I[f  
} =xSFKu*  
(i.MxG Dd  
堆排序: 8ysU.5S  
6ALf`:  
package org.rut.util.algorithm.support; hWJ\dwF  
%+L:Gm+^g#  
import org.rut.util.algorithm.SortUtil; U8c0N<j  
1U;je,)  
/** QjWv?tm  
* @author treeroot <?yAIhgN*  
* @since 2006-2-2 ecA:y!N  
* @version 1.0 L Bb&av  
*/ I?G m  
public class HeapSort implements SortUtil.Sort{ V9`VF O  
:2^%^3+V  
/* (non-Javadoc) (*;b\h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @N7X(@O  
*/ _ "&b%!  
public void sort(int[] data) { Pz,kSxe=  
MaxHeap h=new MaxHeap(); x>A(016:C  
h.init(data); B[Fx2r`0  
for(int i=0;i h.remove(); %C" wUAY  
System.arraycopy(h.queue,1,data,0,data.length); "A~\$  
} M n`gd#  
|#D3~au   
private static class MaxHeap{ "o*(i7T=n  
^Y8?iC<+  
void init(int[] data){ (@B gsY  
this.queue=new int[data.length+1]; ZN~:^,PO/  
for(int i=0;i queue[++size]=data; ( MWh|kp  
fixUp(size); SQDllG84E  
} f>k]{W Y  
} y))d[ 1E  
|a%&7-;   
private int size=0; Obgn?TAVX  
EdlU}LU  
private int[] queue; dT4?8:  
'h53:?~  
public int get() { \L>3E#R-Q  
return queue[1]; $bIVD  
} \XFF(  
wHq*)7#h#  
public void remove() { {'C PLJ{R  
SortUtil.swap(queue,1,size--); #!wu}nDu  
fixDown(1); J.W0F #?  
} :V*c9,>ZO  
file://fixdown @W[`^jfQ  
private void fixDown(int k) { ghq[oK  
int j; &\#If:  
while ((j = k << 1) <= size) { /FJ )gQYA  
if (j < size %26amp;%26amp; queue[j] j++; ]&w8"q  
if (queue[k]>queue[j]) file://不用交换 ZjF5*A8l  
break; =Y Je\745  
SortUtil.swap(queue,j,k); f40xS7-Q0  
k = j; A:Pp;9wl  
} c}v>Mx  
} bHZXMUewC  
private void fixUp(int k) { 4WU%K`jnXb  
while (k > 1) { C +S  
int j = k >> 1; )F*;7]f  
if (queue[j]>queue[k]) K,(37Id'  
break; OZ##x  
SortUtil.swap(queue,j,k); vncLB&@7  
k = j; }TE4)vXs  
} ZmU7tK  
} WX<),u2@  
MG6taOO!  
} }8tD|t[  
Iow45R~]  
} h[H FZv~{  
xNDX(_U>\  
SortUtil: 1@" L  
N~Zcrt_D  
package org.rut.util.algorithm; vt8z=O  
kD1[6cJ!=.  
import org.rut.util.algorithm.support.BubbleSort; >wx1M1  
import org.rut.util.algorithm.support.HeapSort; %*J'!PC9n  
import org.rut.util.algorithm.support.ImprovedMergeSort; {Aq2}sRl{  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'KL!)}B$h  
import org.rut.util.algorithm.support.InsertSort; mtfEK3?2*  
import org.rut.util.algorithm.support.MergeSort; f-]5ZhM'  
import org.rut.util.algorithm.support.QuickSort; w K)/m`{g  
import org.rut.util.algorithm.support.SelectionSort; sUl/9VKl  
import org.rut.util.algorithm.support.ShellSort; SA3!a.*c  
L{)*evBL  
/** 1=NP=ZB  
* @author treeroot U42B( ow  
* @since 2006-2-2 ZDffR: An  
* @version 1.0 Mzfuthq=@  
*/ Q--Hf$D]H  
public class SortUtil { gxa@da  
public final static int INSERT = 1; fT$Fv  
public final static int BUBBLE = 2; gFBMARxi  
public final static int SELECTION = 3; o]gS=iLp  
public final static int SHELL = 4; #0*OkZMt  
public final static int QUICK = 5; 'UW]~  
public final static int IMPROVED_QUICK = 6; LS(J%\hMDm  
public final static int MERGE = 7; 0xZX%2E  
public final static int IMPROVED_MERGE = 8; BZUA/;Hz &  
public final static int HEAP = 9; H<YhO&D*u  
XHX$Ur9  
public static void sort(int[] data) { fwWE`BB  
sort(data, IMPROVED_QUICK); fG{ 9doUD  
} Aw~N"i  
private static String[] name={ Rq,ST:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7"|j.Yq$H{  
}; m`3Mev  
ICbT{Mla  
private static Sort[] impl=new Sort[]{ )'pc1I  
new InsertSort(), XwerQwO=  
new BubbleSort(), 97XGJ1HI  
new SelectionSort(), QAI!/bB  
new ShellSort(), YY? }/r  
new QuickSort(), BkO)hze  
new ImprovedQuickSort(), k~P{Rm;F  
new MergeSort(), Hf^Tok^6@]  
new ImprovedMergeSort(), (";{@a %  
new HeapSort() |N^z=g P[  
}; _mi(:s(  
kJy bA  
public static String toString(int algorithm){ (l~3~n  
return name[algorithm-1]; @X\2K?c(v  
} MZ/PXY  
XyM?Dc5,  
public static void sort(int[] data, int algorithm) { *, Mg  
impl[algorithm-1].sort(data); vW\|% @hW,  
} xUG:x4Gz+  
a%h'utF{[  
public static interface Sort { 0xNlO9b/  
public void sort(int[] data); 4 Ii@_r>  
} p| #gn<z}  
.F*2]xj@"  
public static void swap(int[] data, int i, int j) { YflotlT}  
int temp = data; $S|2'jc  
data = data[j]; _:tclBc8R  
data[j] = temp; zF F=v7[j  
} o`@B*, @  
} $_.m<  
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