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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。  CjQ_oNI  
插入排序: pq5)Ug  
l O, 2  
package org.rut.util.algorithm.support; q\#3G  
#`"'  
import org.rut.util.algorithm.SortUtil; &P3B  
/** _;01/V"q6  
* @author treeroot D~f.)kkC4  
* @since 2006-2-2 4)j<(5  
* @version 1.0 XQ(`8Jl&^  
*/ FA{I S0  
public class InsertSort implements SortUtil.Sort{ BpP\C!:^  
 NkO$ M  
/* (non-Javadoc) ^ioTd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \yG_wZs  
*/ =As'vt 0  
public void sort(int[] data) { SgXXitg9+  
int temp; M~662]Ekk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cJ8*[H<NV  
} !y] Y'j  
} b}"/K$`Fd  
}  j Mp{  
XVv7W5/q]  
} hChM hc  
6AQ;P  
冒泡排序: C)C;U&Qd  
Fah}#,  
package org.rut.util.algorithm.support; b1*6)  
-nk%He  
import org.rut.util.algorithm.SortUtil; NZlJ_[\$C  
bfpW ^y  
/** P;_dil G  
* @author treeroot 5Rec}H  
* @since 2006-2-2 p>}N9v;Bo  
* @version 1.0 JR<R8+@g_  
*/ Y#t"..mc'  
public class BubbleSort implements SortUtil.Sort{ t#pY2!/T3  
3:;%@4f  
/* (non-Javadoc) '6WDs]\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mvcl9  
*/ t!iF(R\  
public void sort(int[] data) { #ASu SQ  
int temp; mMjVbeh[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T8m%_U#b  
if(data[j] SortUtil.swap(data,j,j-1); ?=4t~\g?  
} [&`>&u@MK  
} sIy$}_  
} Ol-'2l  
} ih;TQ!c+b  
T]zjJwa  
} B+B v(p  
/nmfp&@  
选择排序: 2mT+@G  
h n ]6he  
package org.rut.util.algorithm.support; w`v\/a_  
Q?;ntzi  
import org.rut.util.algorithm.SortUtil; iLI]aZ   
^}[ N4  
/** He*L"VpWv  
* @author treeroot 7>mYD3  
* @since 2006-2-2 *Xnq1_K}  
* @version 1.0 ]s S oIT  
*/ j,-7J*A~  
public class SelectionSort implements SortUtil.Sort { mT9\%5d3  
#3$|PM7,_  
/* 5.E 2fX  
* (non-Javadoc) b>(l F%M  
* 7U7 i2 4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +=8Po'E^!d  
*/ atAA[~  
public void sort(int[] data) { $3Ia+O   
int temp; 0cbF.Um8  
for (int i = 0; i < data.length; i++) { vJ' 93 h  
int lowIndex = i; CYu8J@(\~g  
for (int j = data.length - 1; j > i; j--) { igL^k`&5^"  
if (data[j] < data[lowIndex]) { qprOxP r  
lowIndex = j; < KA@A}  
} ]>,|v,i =  
} q'r3a+  
SortUtil.swap(data,i,lowIndex); iau&k `b`  
} [)u(\nfGX  
} `7A@\Ha3  
F&~vD  
} el%Qxak`"  
y_&XF>k91  
Shell排序: h:NXO'  
'W*F[U*&HP  
package org.rut.util.algorithm.support; ]>o2P cb;  
&$Lm95  
import org.rut.util.algorithm.SortUtil; u2Obb`p S  
. gJKr  
/** l:"*]m7o_  
* @author treeroot  B" z5j  
* @since 2006-2-2 yw<xv-Q=i  
* @version 1.0 g < o;\\  
*/ )]R?v,9*D  
public class ShellSort implements SortUtil.Sort{ YLo$n  
Y5CE#&  
/* (non-Javadoc) %R>S"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <hbbFL}|%  
*/ pAuwSn#i  
public void sort(int[] data) { ?OyW|jL  
for(int i=data.length/2;i>2;i/=2){ Y c kbc6F  
for(int j=0;j insertSort(data,j,i); kDh(~nfj  
} bl<7[J.  
} O2dgdtm  
insertSort(data,0,1); 8|GpfW3p 2  
} PgAfR:Y!  
&L]*]Xz;  
/** }C1wfZ~F~  
* @param data B_2>Yt"  
* @param j )M 0O=Cl1  
* @param i <UdD@(iZ#  
*/ ?< QFW#:)  
private void insertSort(int[] data, int start, int inc) { .*blM1+6i/  
int temp; AUde_ 1hi  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); NN'<-0~  
} \k_3IP?o=  
} >}*jsqaVU  
} 5#\p>}[HG  
9m4rNvb  
} z]AS@}wWqg  
2v1&%x:y#  
快速排序: VH6|(=8  
="R6YL  
package org.rut.util.algorithm.support; x^2/jUc#B  
7F:;3c  
import org.rut.util.algorithm.SortUtil; )d u{ZWr  
J*X.0&Toc  
/** ^)l@7XxD  
* @author treeroot {fv8S;|u  
* @since 2006-2-2 nF$)F?||  
* @version 1.0 O Zm[i H  
*/ =Gz>ZWF  
public class QuickSort implements SortUtil.Sort{ j]O[I^5  
6CRPdLTDf  
/* (non-Javadoc) ZMg9Qt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r.^X>?  
*/ em!R9J.  
public void sort(int[] data) { ^X%4@,AE  
quickSort(data,0,data.length-1); i bs "Iv34  
} G%R`)Z]8&  
private void quickSort(int[] data,int i,int j){ F)ld@Ydk=  
int pivotIndex=(i+j)/2; \<x_96jt!\  
file://swap R6mJFE*6T9  
SortUtil.swap(data,pivotIndex,j); `Kw8rG\]:  
g*r;( H>e  
int k=partition(data,i-1,j,data[j]); =e-aZ0P  
SortUtil.swap(data,k,j); TcmZ0L^O  
if((k-i)>1) quickSort(data,i,k-1); l]y%cJ~$'D  
if((j-k)>1) quickSort(data,k+1,j); = S8>  
@M^Qh Hs  
} bk9~63tN+>  
/** Z*)Y:tk)b  
* @param data psy(]Pf  
* @param i R bc2g"]  
* @param j ={@ @`yP^$  
* @return Ny7=-]N4{"  
*/ 6ilC#yyp  
private int partition(int[] data, int l, int r,int pivot) { A""*vqA  
do{ 7h&`BS  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); OrJlHMz  
SortUtil.swap(data,l,r); 8yz((?LrDh  
} ]l7\Zq  
while(l SortUtil.swap(data,l,r); (DP9& b  
return l; #]a51Vss  
} 7 +hF;  
FDs^S)B  
} #33RhJu5,  
'Qq_Xn8  
改进后的快速排序: @:QdCG+  
 53*, f  
package org.rut.util.algorithm.support; 15T[J%7f  
f3>6:(  
import org.rut.util.algorithm.SortUtil; -Dq:Y,%q  
nC.2./OwMf  
/** +ls*//R  
* @author treeroot S}Y|s]6  
* @since 2006-2-2 ~TFYlV  
* @version 1.0 #Q7x:,f  
*/ pH l2!{z  
public class ImprovedQuickSort implements SortUtil.Sort { UK_aqB  
akCo+ @  
private static int MAX_STACK_SIZE=4096; ZMMo6;  
private static int THRESHOLD=10; h 4.=sbzZ  
/* (non-Javadoc) A r7mH4M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QUZQY`' @  
*/ e=jT]i*cU  
public void sort(int[] data) { QT= ,En  
int[] stack=new int[MAX_STACK_SIZE]; ]v\egfW,W  
]baaOD$Z  
int top=-1; P9TBQW2G{  
int pivot; XZdr`$zf  
int pivotIndex,l,r; -0VA!3l  
{+ 6D-rDw  
stack[++top]=0; mV*/zWh_  
stack[++top]=data.length-1; l*\~ew   
Ag4Ga?&8ec  
while(top>0){ P&%eIgAOL  
int j=stack[top--]; 87pXv6'FQ  
int i=stack[top--]; Am4^v?q  
>AzWM .r  
pivotIndex=(i+j)/2; )x8;.@U  
pivot=data[pivotIndex]; H1%[\X?=  
uJam $V  
SortUtil.swap(data,pivotIndex,j); oAZF3h]po  
D_n}p8blT  
file://partition k8 ;uC~L  
l=i-1; d=Df.H+3  
r=j; 24jtJC,7  
do{ >'}=.3\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <ql w+RVt  
SortUtil.swap(data,l,r); pgd8`$(Q  
} VwOG?5W/  
while(l SortUtil.swap(data,l,r); O%JsUKV  
SortUtil.swap(data,l,j); ]Q4PbW  
?)' 2l6  
if((l-i)>THRESHOLD){ ]KXMGH_  
stack[++top]=i; jH&_E'XMX  
stack[++top]=l-1; M6jp1:ZH2q  
} @ <OO  
if((j-l)>THRESHOLD){ EY)Gi`lK  
stack[++top]=l+1; ) Kc%8hBv  
stack[++top]=j; @ 2!C^}d3F  
} k]Alp;hVd  
S~k*r{?H})  
} iO*`(s  
file://new InsertSort().sort(data); Y8%0;!T  
insertSort(data); wMz-U- z  
} v. Xoq  
/** *!g 24  
* @param data xEVLE,*?>  
*/ `s`C{|wv  
private void insertSort(int[] data) { ?L@@;tt  
int temp; Pknc[h},  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }qiF^D}  
} nw0L1TP/J  
} !8Z2X!$m{<  
} U!c]_q  
,\o<y|+`S  
} T~%H%O(F  
Mny'9hsl  
归并排序: #M5_em4kN  
I#U>5"%\a  
package org.rut.util.algorithm.support; J]}FC{CD!  
rQ    
import org.rut.util.algorithm.SortUtil; =n-z;/NL  
l#D-q/k?  
/** I?a8h`WS+  
* @author treeroot P_p6GT:5  
* @since 2006-2-2 P</s)"@  
* @version 1.0 +7Yu^&  
*/ {ITv&5?>  
public class MergeSort implements SortUtil.Sort{ tu\mFHvlg  
-@''[m.*  
/* (non-Javadoc) J=UZ){c>:.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3{<R5wUo"  
*/ oi2J :Y4  
public void sort(int[] data) { RT% x&j  
int[] temp=new int[data.length]; }A{_L6qx  
mergeSort(data,temp,0,data.length-1); 6*ZU}xT  
} R? O-x9  
HWqLcQ d:P  
private void mergeSort(int[] data,int[] temp,int l,int r){ k$C"xg2  
int mid=(l+r)/2; ]o-Fi$h!  
if(l==r) return ; q0&Wk"X%rr  
mergeSort(data,temp,l,mid); Lf >YdD  
mergeSort(data,temp,mid+1,r); coDj L.u  
for(int i=l;i<=r;i++){ _u> t3RUA  
temp=data; ;}LJh8_  
} ezp<@'0ZT  
int i1=l; >DL/ ..  
int i2=mid+1; jOs H2^  
for(int cur=l;cur<=r;cur++){ B4Q79gEh=  
if(i1==mid+1) EMLx?JnP  
data[cur]=temp[i2++]; i 'qMi~{  
else if(i2>r) QwBXlO?  
data[cur]=temp[i1++]; Vo%Yf9C  
else if(temp[i1] data[cur]=temp[i1++]; AzZJG v ]H  
else EYG"49 c  
data[cur]=temp[i2++]; vF"c  
} huz86CO  
} @7-=zt+f  
Zvxp%dES  
} zLP],wB  
@r F/]UJ  
改进后的归并排序: \/!ZA[D|E\  
<"?*zx&  
package org.rut.util.algorithm.support; U IfH*6X  
[[w2p  
import org.rut.util.algorithm.SortUtil; 6 *Zj]is  
yO=p3PV d  
/** cf)J )  
* @author treeroot > @+#  
* @since 2006-2-2 y0<U u  
* @version 1.0 `)$`-Pw*  
*/ "A;s56}'&  
public class ImprovedMergeSort implements SortUtil.Sort { ym\(PCa5`  
RX'-99M  
private static final int THRESHOLD = 10; z>G;(F2  
SG:bM7*1'  
/* H d*}k6  
* (non-Javadoc) 7:TO\0]2n  
* Lj8)' [K"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4}i*cB `  
*/ Q[uAIyv0  
public void sort(int[] data) { =h|wwQE  
int[] temp=new int[data.length]; X"j>=DEX  
mergeSort(data,temp,0,data.length-1); OEnDsIhq  
} 0z7L+2#b^  
P? (vW&B  
private void mergeSort(int[] data, int[] temp, int l, int r) { 'a#mViPTQ)  
int i, j, k; @uM EXP  
int mid = (l + r) / 2; Bd5+/G=m  
if (l == r) 0I 5&a  
return; -f9]v9|l  
if ((mid - l) >= THRESHOLD) 7)^:8I(  
mergeSort(data, temp, l, mid); =1Z;Ma<;  
else FW#P*}#  
insertSort(data, l, mid - l + 1); rQJ"&CapT  
if ((r - mid) > THRESHOLD)  W8]V  
mergeSort(data, temp, mid + 1, r); wzh ]97b  
else xx }GOY.J  
insertSort(data, mid + 1, r - mid); J-V49X#  
pZk6 w1d!  
for (i = l; i <= mid; i++) { KzphNHd  
temp = data; 9JnY$e<&  
} __I/F6{ 9V  
for (j = 1; j <= r - mid; j++) { MR$>!Nlp  
temp[r - j + 1] = data[j + mid]; BAV>o|-K  
} c2*`2qK#  
int a = temp[l]; 4Po)xo  
int b = temp[r]; ;:mu}  
for (i = l, j = r, k = l; k <= r; k++) { =P`~t<ajB  
if (a < b) { /(?@mnq_  
data[k] = temp[i++]; %}&(h/= e  
a = temp; he$XLTmr:  
} else { [ohBPQO  
data[k] = temp[j--]; Puh$%;x  
b = temp[j]; *hdC?m. _  
} .A6lj).:  
} F[Q!d6  
} BFVAw  
rNlW7 Y  
/** "e6|"w@8  
* @param data 3s*(uS(  
* @param l 0Fw6Dq<8-!  
* @param i eV7 u*d?  
*/ wO.iKX;  
private void insertSort(int[] data, int start, int len) { JOb MZA$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @Uo6>-W F  
} F|+W.9  
} rwE%G>Vb  
} EJ84rSp  
} iv&v8;B  
M4m$\~zf  
堆排序: 8VQ 24r  
(Yb[)m>fQ}  
package org.rut.util.algorithm.support; jS<_ )  
6#e::GD  
import org.rut.util.algorithm.SortUtil; g(ogXA1  
o)Z=m:t,lK  
/** |=dC )Azs  
* @author treeroot bh p5<N  
* @since 2006-2-2 6oD\-H  
* @version 1.0 ve6w<3D@  
*/ :6{`~=  
public class HeapSort implements SortUtil.Sort{ x@>&IBiL  
Ts$@s^S]  
/* (non-Javadoc) H1EDMhn/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sEc;!L  
*/ "xJ0 vlw  
public void sort(int[] data) { #Q"O4 b:8  
MaxHeap h=new MaxHeap(); EZDy+6b  
h.init(data); 3)=c]@N0  
for(int i=0;i h.remove(); @>Mxwpl?  
System.arraycopy(h.queue,1,data,0,data.length); v(]]_h  
} ` `U^COD  
t.Nb? /  
private static class MaxHeap{ &>g'$a<[  
dt}_D={Be  
void init(int[] data){ M~Ttb29{  
this.queue=new int[data.length+1]; @`36ku  
for(int i=0;i queue[++size]=data; I@#;nyAj"  
fixUp(size); >Z.\J2wM<j  
} c]-*P7W  
} . Dg*\ h  
m!tx(XsXU  
private int size=0; cD|Htt"  
_ *f  
private int[] queue; (~~w7L s  
@=j WHS  
public int get() { v"& pQ  
return queue[1]; )0 W`  
} M=qb^~ l  
T:]L/wCj  
public void remove() { uw(NG.4  
SortUtil.swap(queue,1,size--); X1{[}!  
fixDown(1); bg,9@ }"F  
} 5q9s,r_  
file://fixdown 6z0@I*  
private void fixDown(int k) { $d S@y+  
int j; 7{@l%jx][  
while ((j = k << 1) <= size) { yXI >I  
if (j < size %26amp;%26amp; queue[j] j++; s~I6SA&i  
if (queue[k]>queue[j]) file://不用交换 \s"U{N-  
break; @yd4$Mv8%  
SortUtil.swap(queue,j,k); x<Vm5j  
k = j; *Xo]-cKL0  
} tZ`Ts}\e  
} =OIw*L8C"I  
private void fixUp(int k) { goat<\a  
while (k > 1) { ;9o;r)9~  
int j = k >> 1; 6DG@?O  
if (queue[j]>queue[k]) gz2\H}  
break; eW5SFY.  
SortUtil.swap(queue,j,k); HK\~Qnq  
k = j; o<IAeH {+  
} 98=wnWX 6$  
} 3(TsgP >`  
RrU BpqA  
} z#BR5jF  
_@S`5;4x  
} m]i @ +C  
`.s({/|[  
SortUtil: DCqY|4Qc  
-*5Rnx|Y{  
package org.rut.util.algorithm; F}Vr:~  
"-@[R  
import org.rut.util.algorithm.support.BubbleSort; uqz]J$  
import org.rut.util.algorithm.support.HeapSort; wtje(z5IL  
import org.rut.util.algorithm.support.ImprovedMergeSort; @(r /dZc  
import org.rut.util.algorithm.support.ImprovedQuickSort; pTIf@n6I  
import org.rut.util.algorithm.support.InsertSort; (/35p g6\  
import org.rut.util.algorithm.support.MergeSort; W9NX=gE4  
import org.rut.util.algorithm.support.QuickSort; q6YXM  
import org.rut.util.algorithm.support.SelectionSort; cGjPxG;  
import org.rut.util.algorithm.support.ShellSort; eX@L3BKp  
y;/VB,4V  
/** YPHS 1E?  
* @author treeroot Eke5Nb  
* @since 2006-2-2 >EY3/Go>  
* @version 1.0 TB0 5?F  
*/ ]_N|L|]M  
public class SortUtil { <b,~:9*?  
public final static int INSERT = 1; I`NjqyTW  
public final static int BUBBLE = 2; <&C]s b  
public final static int SELECTION = 3; e7wSOs  
public final static int SHELL = 4; E>l~-PaZY  
public final static int QUICK = 5; .Wjs~0c  
public final static int IMPROVED_QUICK = 6; '],J$ge  
public final static int MERGE = 7; SdD6 ~LS  
public final static int IMPROVED_MERGE = 8; ,v"YqD+GC5  
public final static int HEAP = 9; -GxaV #{  
A~-b!Grf  
public static void sort(int[] data) { eM8}X[  
sort(data, IMPROVED_QUICK); oq}'}`lw"  
} | Bi!  
private static String[] name={ `V##Y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (+0v<uR^D  
}; p, #o<W  
Mo^ od<  
private static Sort[] impl=new Sort[]{ ~@}Bi@*  
new InsertSort(), a\r\PBi  
new BubbleSort(), `nu''B H  
new SelectionSort(), 4<BjC[@~Z{  
new ShellSort(), }}59V&'t  
new QuickSort(), {;2PL^i  
new ImprovedQuickSort(), YOcO4   
new MergeSort(), q@{Bt{$x  
new ImprovedMergeSort(), CB^U6ZS  
new HeapSort() LGn:c;  
}; $` ""  
jnn}V~L  
public static String toString(int algorithm){ %KLpig  
return name[algorithm-1]; 7j-4TY~  
} x7Yu I  
,y#Kv|R  
public static void sort(int[] data, int algorithm) { ZP(f3X@  
impl[algorithm-1].sort(data); {z{bY\  
} +{oG|r3L  
z:wutqru  
public static interface Sort { Qnsi`1mASr  
public void sort(int[] data); -Fe?R*-g  
} Vh4X%b$TV  
p^w;kN  
public static void swap(int[] data, int i, int j) { .:F%_dS D  
int temp = data; 9P+-#B  
data = data[j]; 9w7n1k.  
data[j] = temp; 1ukTA@Rj&  
} 'DCTc&J['  
} T{-CkHf9Q  
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