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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。 P*XLm  
插入排序: at${^,&  
@dV'v{:,  
package org.rut.util.algorithm.support; C] qY  
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import org.rut.util.algorithm.SortUtil; [WnX'R R  
/** i)g=Lew  
* @author treeroot 8i=J(5=  
* @since 2006-2-2 kMAQHpDD  
* @version 1.0 %*lOzC  
*/ T>e!DOW;  
public class InsertSort implements SortUtil.Sort{ nellN}jYsM  
DcE)6z#  
/* (non-Javadoc) 6 uW?xB9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %+YLe-\?  
*/ '{p/F $  
public void sort(int[] data) { R<@s]xX_  
int temp; xGCW-YR9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;3OQgKI  
} wd2GKq!  
} (wU<Kpt?J  
} :jB~rhZ~  
%eB0 )'  
} B *p`e1  
~q4KQ&.!  
冒泡排序: >Lx,<sE  
2W:R{dHE  
package org.rut.util.algorithm.support; J^8(h R  
Q;W[$yvW  
import org.rut.util.algorithm.SortUtil; '=K [3%U  
{m~.'DU  
/** O*xC}$OOn  
* @author treeroot A}pmr  
* @since 2006-2-2 h3D~?Iom  
* @version 1.0 r:lv[/ D  
*/ UjxEbk5>^  
public class BubbleSort implements SortUtil.Sort{ *F0O*n*7W  
|VxEW U/  
/* (non-Javadoc) 4$.$j=Ct."  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G66sP w  
*/ ^F2 OTz4n  
public void sort(int[] data) { 9o5W\.A7[D  
int temp; P1KXvc}JGe  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ([SrIG>X  
if(data[j] SortUtil.swap(data,j,j-1); 2(M^8Bl  
} idW=  
} uvR9BL2=  
} 4j^-n_T  
} 5p!X}u ]  
&AM<H}>  
} h!.#r*vV  
vM )2F  
选择排序: zY_xJ"/9  
-(*<2Hy4  
package org.rut.util.algorithm.support; b-4g HW  
W,<L/ZKJ  
import org.rut.util.algorithm.SortUtil; .x\fPjB   
|m{Q_zAB  
/** XfY~q~f8  
* @author treeroot M]9oSi  
* @since 2006-2-2 "9F]Wv/  
* @version 1.0 R-odc,P=  
*/ 4HX qRFUD  
public class SelectionSort implements SortUtil.Sort { CUJP"u>8M  
]j.=zQP?'  
/* >! u@>  
* (non-Javadoc) Cwo(%Wc  
* QY14N{]T\p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i>=d7'oR  
*/ yLv jfP1  
public void sort(int[] data) { 0u0<)gdX  
int temp; ;/tZsE{  
for (int i = 0; i < data.length; i++) { Hgu:*iYA  
int lowIndex = i; r(UEPGu|~l  
for (int j = data.length - 1; j > i; j--) { g7*"*%v 2  
if (data[j] < data[lowIndex]) { ?l\1n,!:8  
lowIndex = j; /JP]5M)   
} >)5=6{x  
} _PTo !aJL  
SortUtil.swap(data,i,lowIndex); +a'QHtg  
} ;=rMIi  
} ,$;g'z!N  
lo}[o0X  
} aFkxR\x 6%  
&uLxA w  
Shell排序: Rg:3}T`~n  
bXN-q!  
package org.rut.util.algorithm.support; 2m`4B_g A  
y&y(<  
import org.rut.util.algorithm.SortUtil; ONx|c'0g  
`i{k^Q  
/** p(2j7W-/  
* @author treeroot bYzBe\^3q3  
* @since 2006-2-2 |=OO$z;q|  
* @version 1.0 ~cE;k@  
*/ to0tH^pD  
public class ShellSort implements SortUtil.Sort{ [V#"7O vl  
1[k~*QS  
/* (non-Javadoc) C:tA|<b|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |pIA9/~Z  
*/ ] o!#]]   
public void sort(int[] data) { Lh=~3  
for(int i=data.length/2;i>2;i/=2){ Z=: oIAe  
for(int j=0;j insertSort(data,j,i); Z_%}pe39B  
} \!UNa le  
} $s2-O!P?  
insertSort(data,0,1); ivdw1g|)h  
} Df_W>QC  
0F'75  
/** I3Sl>e(Z  
* @param data ^qpa[6D6x  
* @param j c$f|a$$b   
* @param i -;$+`<%  
*/ ;F&wGe  
private void insertSort(int[] data, int start, int inc) { c ;3bX6RD*  
int temp; Q^Ln`zMe  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 3 )f=Z2U>  
} ";~}"Yz?[  
} T0_9:I`&  
} BfOG e!Si  
H+zn:j@~L  
} X7kJWX  
x7e  
快速排序: TGLkwXOkT  
Y51XpcXQ  
package org.rut.util.algorithm.support; 8Gb=aF1  
TJY$<:  
import org.rut.util.algorithm.SortUtil; ?Di, '  
K. G#[  
/** yZ:|wxVY  
* @author treeroot 4qda!%  
* @since 2006-2-2 ^JtGT  
* @version 1.0 y_"GMw  
*/ >ge-yK 1  
public class QuickSort implements SortUtil.Sort{ [[D}vL8d  
wrG*1+r  
/* (non-Javadoc) *DkA$Eu3u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kt1f2cj  
*/ :kZ2N67  
public void sort(int[] data) { @n(=#Q3  
quickSort(data,0,data.length-1); ]_BG"IR!..  
} jn\\,n"6  
private void quickSort(int[] data,int i,int j){ `Uk,5F5   
int pivotIndex=(i+j)/2; 7\ff=L-b  
file://swap gb(\c:yg1R  
SortUtil.swap(data,pivotIndex,j); BHj]w*Ov  
j~DoMP5Ls  
int k=partition(data,i-1,j,data[j]); =mqV&FgRo  
SortUtil.swap(data,k,j); ECkfFE`  
if((k-i)>1) quickSort(data,i,k-1); b&~uK"O'7d  
if((j-k)>1) quickSort(data,k+1,j); O8u"Y0$*w  
$ O!f*lG  
} y8+?:=N.  
/** .M>u:,v  
* @param data ]^ O<WD  
* @param i ciC4V^f  
* @param j hQGZrZK#  
* @return e^'?:j  
*/ aDZLabRu  
private int partition(int[] data, int l, int r,int pivot) { \yG_wZs  
do{ ^J% w[FE  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wuYo@DDU#  
SortUtil.swap(data,l,r); %aw/Y5  
} xC;$/u%'  
while(l SortUtil.swap(data,l,r); ZQBo|8*  
return l; McsqMI6  
} X_!mZ\H7  
q=nMZVVlF(  
} rW\~sTH  
DBmcvC  
改进后的快速排序: %7|qnh6  
e9B,  
package org.rut.util.algorithm.support; RTl7vzG  
J"83S*2(j  
import org.rut.util.algorithm.SortUtil; 8%xtb6#7M  
},Z -w_H  
/** 9q8 rf\&  
* @author treeroot Ej34^*m9k  
* @since 2006-2-2 ;,4J:zvZdQ  
* @version 1.0 gdG: &{|x  
*/ 4x C0Aw  
public class ImprovedQuickSort implements SortUtil.Sort { ' xi..  
I(7gmCV  
private static int MAX_STACK_SIZE=4096; WG}QLcP  
private static int THRESHOLD=10; L0_=R;.<  
/* (non-Javadoc) '\_)\`a|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3o^V$N.  
*/ 50R+D0^mh  
public void sort(int[] data) { 7I44BC*R~  
int[] stack=new int[MAX_STACK_SIZE]; YJL=|v  
VmT5? i  
int top=-1; fzio8m KVX  
int pivot; &GZR-/  
int pivotIndex,l,r; v*^2[pf  
9(PFd%  
stack[++top]=0; hWW<]qzA,  
stack[++top]=data.length-1; =lmh^**4  
$?GO|.59  
while(top>0){ !*ucVv;  
int j=stack[top--]; X'F$K!o*,:  
int i=stack[top--]; c]&VUWQ  
vSL{WT]m  
pivotIndex=(i+j)/2; R 1b`(  
pivot=data[pivotIndex]; ZT8j9zs  
zF$wz1 %  
SortUtil.swap(data,pivotIndex,j); `&6]P:_qp  
VA%i_P,  
file://partition >k#aB.6  
l=i-1; t8+93,*B  
r=j; x}[` -  
do{ ;(,Fe/wvC  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #e=^-yE  
SortUtil.swap(data,l,r); }<S2W\,G  
} CYu8J@(\~g  
while(l SortUtil.swap(data,l,r); \* #4  
SortUtil.swap(data,l,j); R{B~Now3  
ou-;k }  
if((l-i)>THRESHOLD){ ?C{N0?[P-  
stack[++top]=i; ?n+\T'f!  
stack[++top]=l-1; Y|~>(  
} ;v'Y' !-J  
if((j-l)>THRESHOLD){ <coCu0  
stack[++top]=l+1; el%Qxak`"  
stack[++top]=j; a+i+#*8wm  
} qQ'@yTVN  
eH8.O  
} `y#C%9#  
file://new InsertSort().sort(data); OXB-.<  
insertSort(data); 2Qj)@&zKe#  
} }+J@;:  
/** {;/o4[jlg  
* @param data g-}sVvM  
*/ Zv\b`Cf}  
private void insertSort(int[] data) { nSiNSLv  
int temp; AlxS?f2w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uSJP"Lw  
} buXG32;  
} 1 %`:8  
} 3lN+fQ>)S  
{[?|RC;\Y  
} Se`N5hQ  
qI^jwl|k  
归并排序: j[cjQ]>~'  
Ke'2"VkQt  
package org.rut.util.algorithm.support; !y?hn$w0  
O;BPd:<  
import org.rut.util.algorithm.SortUtil; )M 0O=Cl1  
v!xrUyN~m  
/** u'1=W5$rK  
* @author treeroot !e `=UZe1  
* @since 2006-2-2 gj^]}6-P  
* @version 1.0 +GU16+w~E  
*/ O$/ swwB!  
public class MergeSort implements SortUtil.Sort{ fZ fiiE~7J  
5I,X#}K[  
/* (non-Javadoc) }8: -I Nj4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2v1&%x:y#  
*/ VH6|(=8  
public void sort(int[] data) { MlE~ gCD  
int[] temp=new int[data.length]; , ~X;M"U  
mergeSort(data,temp,0,data.length-1); CD[=z)<z{  
} ;@ X   
m4>o E|\  
private void mergeSort(int[] data,int[] temp,int l,int r){ E(_I3mftm  
int mid=(l+r)/2; J)|K/W9  
if(l==r) return ; m0\}Cc  
mergeSort(data,temp,l,mid); @ -d4kg  
mergeSort(data,temp,mid+1,r); [frD L)  
for(int i=l;i<=r;i++){ i6 ?JX@I  
temp=data; /exl9Ilt]  
} r.^X>?  
int i1=l; em!R9J.  
int i2=mid+1; z.HNb$;  
for(int cur=l;cur<=r;cur++){ B1#>$"_0}=  
if(i1==mid+1) k.[) R@0%  
data[cur]=temp[i2++]; SfSEA^@|  
else if(i2>r) Q]UYG(  
data[cur]=temp[i1++]; `Kw8rG\]:  
else if(temp[i1] data[cur]=temp[i1++]; J4c4Os>3  
else _hL4@ C  
data[cur]=temp[i2++]; TbAdTmW  
} p Y>-N  
} )}\@BtcjA]  
@b\_696.  
} .hNw1~Fj  
T)tHN#6I  
改进后的归并排序: P\6T4s  
aq/Y}s?  
package org.rut.util.algorithm.support; Ny7=-]N4{"  
~LW%lMy;^|  
import org.rut.util.algorithm.SortUtil;  ^-*Tn  
Mqf}Aiqk;  
/** OrJlHMz  
* @author treeroot 8yz((?LrDh  
* @since 2006-2-2 ]l7\Zq  
* @version 1.0 R6Z}/m  
*/ vek:/'sj3p  
public class ImprovedMergeSort implements SortUtil.Sort { aC Lg~g4  
TIWLp  
private static final int THRESHOLD = 10; yxWMatZ2  
@:QdCG+  
/* jP.b oj_u*  
* (non-Javadoc) z/&a\`DsU  
* {2gd4[:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qq7X ",s  
*/ 9f%y)[ \  
public void sort(int[] data) { LI;EfyL  
int[] temp=new int[data.length]; RHl=$Hm.%  
mergeSort(data,temp,0,data.length-1); JrWBcp:Y  
} !5SQN5K  
a(DZGQ-as  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^C)TM@+  
int i, j, k; rbuL@= S@*  
int mid = (l + r) / 2; Y0fO.k#C^  
if (l == r) ytV)!xe  
return; g_U~.?Db7  
if ((mid - l) >= THRESHOLD) V;hwAQbF  
mergeSort(data, temp, l, mid); ._MAHBx+G  
else 9}jq`xSL  
insertSort(data, l, mid - l + 1); CL'Xip')T  
if ((r - mid) > THRESHOLD) =Pb5b6Y@6  
mergeSort(data, temp, mid + 1, r); u6Qf*_-K  
else 5H :~6z  
insertSort(data, mid + 1, r - mid); "3i80R\w`F  
K7xWE,y  
for (i = l; i <= mid; i++) { T<e7(=  
temp = data; q&Tn>B  
} /sT ^lf=  
for (j = 1; j <= r - mid; j++) { ,Lun-aMd  
temp[r - j + 1] = data[j + mid]; ^*x Hy`  
} ?9gTk \s?R  
int a = temp[l]; g?[& 0r1  
int b = temp[r]; %X"m/4c8}  
for (i = l, j = r, k = l; k <= r; k++) { bA<AG*  
if (a < b) { 0+<eRR9 -  
data[k] = temp[i++]; d=Df.H+3  
a = temp; ./&zO{|0]  
} else { 'LbeL1ca  
data[k] = temp[j--]; 95^i/6Gl!P  
b = temp[j]; RE>ks[  
} JYg% ~tW'  
} '-PMF~~S  
} bKuj po6  
v"~Do+*+  
/** _))I.c=v  
* @param data ![@T iM  
* @param l >^yc=mM(g3  
* @param i ! FR%QGn1  
*/ 2T@L{ql  
private void insertSort(int[] data, int start, int len) { 6 tc:A5mK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); {+"g':><  
} C1T=O  
} bbNU\r5%  
} 2<'`^AO@  
} p`:*mf  
*!g 24  
堆排序: >sQ2@"y)s2  
#`La|a.-  
package org.rut.util.algorithm.support; {4: -0itG  
G` ,u40a  
import org.rut.util.algorithm.SortUtil; 3a#PA4Ql  
LZM,QQ  
/** n1*&%d'7  
* @author treeroot aUW/1nQHa  
* @since 2006-2-2 l]_b;iux  
* @version 1.0 IX<r5!  
*/ ?C &x/2lt  
public class HeapSort implements SortUtil.Sort{ OGJ=VQA  
P3iA(3I24<  
/* (non-Javadoc) hojHbmm4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !TP6=ks  
*/ }xDB ~k  
public void sort(int[] data) { }iilzE4oH#  
MaxHeap h=new MaxHeap(); 2wx!Lpr<i_  
h.init(data); FUaI2  
for(int i=0;i h.remove(); 60GFVF]'2  
System.arraycopy(h.queue,1,data,0,data.length); JbE?a[Eg?  
} y(bsCsV&  
=- $!:W~  
private static class MaxHeap{ [kbC'Eh*  
i`prv&  
void init(int[] data){ Yd' H+r5b  
this.queue=new int[data.length+1]; J&M1t#UN  
for(int i=0;i queue[++size]=data; ;rd6ko  
fixUp(size); cYGRy,'gH  
} J &!B|TS  
} k$C"xg2  
C"6 Amnj  
private int size=0; Kb}MF9?:e  
_6;<ow  
private int[] queue; JE0?@PI$  
z|ves&lRa  
public int get() { Hu[]h]  
return queue[1]; ,I]7g4~  
} OI+E (nA  
BBcj=]"_  
public void remove() { q"S(7xWS  
SortUtil.swap(queue,1,size--); ?^|QiuU:n  
fixDown(1); O -G1})$  
} TfJL+a0  
file://fixdown 1e/L\Y=m  
private void fixDown(int k) { o]A XT8  
int j; [*<.?9n)or  
while ((j = k << 1) <= size) { XdpF&B&K7Q  
if (j < size %26amp;%26amp; queue[j] j++; Zvxp%dES  
if (queue[k]>queue[j]) file://不用交换 `)6>nPr7P  
break; C1d 04Q  
SortUtil.swap(queue,j,k); F) ?o,  
k = j; RU6KIg{H  
} `\!X}xiWd  
} l]H0g[  
private void fixUp(int k) { "3SWO3-x  
while (k > 1) { < kz[:n:  
int j = k >> 1; yO=p3PV d  
if (queue[j]>queue[k]) 5:UyUB  
break; x=.tiM{#  
SortUtil.swap(queue,j,k); 7,*%[#-HE  
k = j; tRteyNA  
} ibXe"X/_  
} bp#fyG"  
w:}C8WKw  
} &UL_bG }  
M ?*Tf&  
} s"i~6})K<$  
9x? B5Ap[  
SortUtil: 4}i*cB `  
X8b|]Nr  
package org.rut.util.algorithm; gz;&u)  
:6Pnie  
import org.rut.util.algorithm.support.BubbleSort; ^;r+W -MQ  
import org.rut.util.algorithm.support.HeapSort; SauH>  
import org.rut.util.algorithm.support.ImprovedMergeSort; M;KA]fmc  
import org.rut.util.algorithm.support.ImprovedQuickSort; fywvJ$HD]L  
import org.rut.util.algorithm.support.InsertSort; Hd%! Nt\u  
import org.rut.util.algorithm.support.MergeSort; @uM EXP  
import org.rut.util.algorithm.support.QuickSort; b}@(m$W  
import org.rut.util.algorithm.support.SelectionSort; b:kXNDc  
import org.rut.util.algorithm.support.ShellSort; F\:(*1C  
OR4!YVVQ  
/** a }'->H  
* @author treeroot rk|a5-i  
* @since 2006-2-2 "'a* [%  
* @version 1.0 iY~rne"l  
*/ 02\JzBU  
public class SortUtil { Qf xH9_  
public final static int INSERT = 1; nN aXp*J  
public final static int BUBBLE = 2; cSK&[>i)4  
public final static int SELECTION = 3; .<#ATFmY  
public final static int SHELL = 4; 4Po)xo  
public final static int QUICK = 5; !tXZ%BP.u  
public final static int IMPROVED_QUICK = 6; c0ez/q1S  
public final static int MERGE = 7; q'G,!];qL  
public final static int IMPROVED_MERGE = 8; [ohBPQO  
public final static int HEAP = 9; ?D|\]0eN  
= 96P7#%  
public static void sort(int[] data) { C4\,z\Q  
sort(data, IMPROVED_QUICK); hoQ7).>  
} a{'Z5ail  
private static String[] name={ 909md|9K3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" VK:8 Nk_y  
}; yz\c5  
&|Np0R  
private static Sort[] impl=new Sort[]{ 6CCbBA  
new InsertSort(), z0bJ?~w,  
new BubbleSort(), 2i7e#  
new SelectionSort(), vq!uD!lr  
new ShellSort(), 0F:1\9f5  
new QuickSort(), %Dig)<yx  
new ImprovedQuickSort(), Zy0aJN>  
new MergeSort(), q,%:h`t\  
new ImprovedMergeSort(), ymN!-x8q>'  
new HeapSort() (Yb[)m>fQ}  
}; 4 !#a3=_  
Dyg?F )6  
public static String toString(int algorithm){ Sw[{JB;y,  
return name[algorithm-1]; +&|S'7&{  
} |=dC )Azs  
a%vrt)Gx  
public static void sort(int[] data, int algorithm) { 0?0Jz  
impl[algorithm-1].sort(data); k`{7}zxS  
} ArK]0$T   
x@>&IBiL  
public static interface Sort { c#/H:?q?a  
public void sort(int[] data); :dI\z]Y(  
} P\nC?!Q%c  
kAA>FI6  
public static void swap(int[] data, int i, int j) { s{bdl[7  
int temp = data; qk/:A+  
data = data[j]; I5m][~6.?  
data[j] = temp; Gi2$B76<  
} zj{r^D$  
} &>g'$a<[  
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