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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。 e=TB/W_  
插入排序: kW5g]Q   
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package org.rut.util.algorithm.support;  [v#t  
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import org.rut.util.algorithm.SortUtil; XkOsnI8n  
/** i,Yv  
* @author treeroot quVTqhg"  
* @since 2006-2-2 vt@.fT#e  
* @version 1.0 xR\$2(  
*/ 27G6C`}  
public class InsertSort implements SortUtil.Sort{ 0Ocy$  
LEWeybT  
/* (non-Javadoc) 8`kK)iCq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mb uD8B  
*/ -dZ7;n5&_  
public void sort(int[] data) { 0vt?yD  
int temp; R/xeC [r  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %fo+Y+t  
} U,~\}$<I  
} !z$.Jcr1  
} Y6 &w0~?!  
h /@G[5E  
} zT*EpIa+LS  
Kbrb;r59  
冒泡排序: O| ) [j@7  
VW$Hzx_z  
package org.rut.util.algorithm.support; , 0MDkXb  
8|OsVIe%  
import org.rut.util.algorithm.SortUtil; j"9bt GX  
nYLq%7}k  
/** SBg BZm}%  
* @author treeroot ^#9 &Rk!t  
* @since 2006-2-2 "VRcR  
* @version 1.0 \f5$L`  
*/ n0:'h}^  
public class BubbleSort implements SortUtil.Sort{ a2SMNC]  
xJ:15eDC  
/* (non-Javadoc) >A;Mf*E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CMI%jyiX  
*/ JJPU!  
public void sort(int[] data) { ~q5"'  
int temp; c-(,%0G0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T'"aStt6  
if(data[j] SortUtil.swap(data,j,j-1); cLEBcTx  
} odD^xg"L  
} kG^DHEne  
} /Q 8E12  
} ?YOH9%_cs  
~D PjTR  
} yO; r]`j0  
Az8>^|@  
选择排序: PV<=wc^  
1>r7s*  
package org.rut.util.algorithm.support; RtwlPz<~S  
}K!}6?17T  
import org.rut.util.algorithm.SortUtil; p'M5]G  
[#.E=s+&  
/** m-dyvW+  
* @author treeroot AK]{^Hvz  
* @since 2006-2-2 ) wtVFG  
* @version 1.0 >7[. {Y  
*/ ;Kob]b  
public class SelectionSort implements SortUtil.Sort { 01uMbtM  
Y?a*-"  
/* wC+_S*M-K  
* (non-Javadoc) L<'3O),}  
* p%pM3<p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L0H;y6&  
*/ F[BJhN*]a  
public void sort(int[] data) { 4 |9M8ocR  
int temp; [*GIR0  
for (int i = 0; i < data.length; i++) { SSEK9UX  
int lowIndex = i; iZ}  w>1  
for (int j = data.length - 1; j > i; j--) { |2z?8lx  
if (data[j] < data[lowIndex]) { ?mU 3foa  
lowIndex = j; (LbAP9Zj#f  
} :L*"OT7(6  
} #Drs=7w  
SortUtil.swap(data,i,lowIndex); ,5$V;|  
} {/#^v?,  
} 9JYrP6I!_  
~w_4 nE  
} 3z';Zwz &X  
{>PN}fk2QP  
Shell排序: 6A&e2K>A  
/`McKYIP  
package org.rut.util.algorithm.support; K<TVp;N  
$<cio X  
import org.rut.util.algorithm.SortUtil; #RT}-H  
{|nm0vg`A  
/** ^}7iouE C  
* @author treeroot 5 #3/  
* @since 2006-2-2 ARvT  
* @version 1.0 ;T0F1  
*/ $N4%I4  
public class ShellSort implements SortUtil.Sort{ Z]kk.@P  
2[6>h)  
/* (non-Javadoc) INtt0Cm9"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cVya~ *  
*/ *y<Ru:D  
public void sort(int[] data) { __o`+^FS  
for(int i=data.length/2;i>2;i/=2){ ]wFKXZeK  
for(int j=0;j insertSort(data,j,i); ?@8[1$1a  
} .@KpN*`KH  
} golr,+LSo  
insertSort(data,0,1); {@, } M  
} ^wNx5t  
9c9F C  
/** BNns#Q8a  
* @param data =%P'?(o|  
* @param j acr@erk  
* @param i E]$YM5  
*/ Jf6u E?.  
private void insertSort(int[] data, int start, int inc) { Elth xj  
int temp; 9 f$S4O5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8fA9yQ 8  
} oE@{h$=  
} tgoOzk^  
} AE0d0Y~9  
' NCxVbyYD  
} =+;1^sZ  
^T*^L=L_(  
快速排序: x}Qet4vV  
dJID '2a  
package org.rut.util.algorithm.support; Xvu|ss  
y Nb&;E7 H  
import org.rut.util.algorithm.SortUtil; /xf4*zr  
:a$ZYyD  
/** / !J1}S  
* @author treeroot v l59|W6  
* @since 2006-2-2 {T|sU\|Q  
* @version 1.0 [GKSQt{)  
*/ FD>j\  
public class QuickSort implements SortUtil.Sort{ Zkl:^!*  
u=^0n2ez  
/* (non-Javadoc) $jMU| {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eBiP\  
*/ EGMj5@>  
public void sort(int[] data) { s!S,;H  
quickSort(data,0,data.length-1); $T* ##kyE9  
} t95hI DtD  
private void quickSort(int[] data,int i,int j){ clfi)-^ {K  
int pivotIndex=(i+j)/2; F jdh&9Zc  
file://swap S~^0 _?  
SortUtil.swap(data,pivotIndex,j); &X0/7)*"v  
Ij; =  
int k=partition(data,i-1,j,data[j]); V"":_`1VW  
SortUtil.swap(data,k,j); V# Mw  
if((k-i)>1) quickSort(data,i,k-1); [P#^nyOh(  
if((j-k)>1) quickSort(data,k+1,j);  yH_L<n  
N!" ]e*q  
} 63:0Vt>hZ^  
/** {MX_t/o=f  
* @param data XP'Mv_!Z  
* @param i <jd S0YT  
* @param j %4QCUc*lr  
* @return dLOUL9hf  
*/ N{Og; roGD  
private int partition(int[] data, int l, int r,int pivot) { xR+=F1y  
do{ f:iK5g  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ht^MY  
SortUtil.swap(data,l,r); *]G&pmMs  
} !1<x@%  
while(l SortUtil.swap(data,l,r); ,Yhy7w  
return l; $$C5Q;7w!  
}  v|+}>g  
5wXe^G  
} .&2pZ  
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改进后的快速排序: W"9iFj X  
N{n}]Js1D-  
package org.rut.util.algorithm.support; 6_/oVvd  
KLBV(`MS  
import org.rut.util.algorithm.SortUtil; -,j J{Y~  
.XM3oIaW  
/** rN#ydw:9  
* @author treeroot A(AyLxB47*  
* @since 2006-2-2 <LM<,  
* @version 1.0  iqf+rBL  
*/ $ hB;r  
public class ImprovedQuickSort implements SortUtil.Sort { )f#@`lf[<  
Y{y #us1  
private static int MAX_STACK_SIZE=4096; ^EU& 6M2  
private static int THRESHOLD=10; =!NYvwg6;o  
/* (non-Javadoc) I%xrDiK97  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }i_[wq{E&  
*/ b7fP)nb695  
public void sort(int[] data) { u#=Yv |9  
int[] stack=new int[MAX_STACK_SIZE]; HN>eS Y+  
Q6?+#}  
int top=-1; g#FqjE|mx  
int pivot; uF5d ]{Qt  
int pivotIndex,l,r; g-xbb&]  
;@K,>$ur-  
stack[++top]=0; j}8IT  
stack[++top]=data.length-1; /1++ 8=  
X?$Eb  
while(top>0){ EVmQ"PKL'  
int j=stack[top--]; %z! w- u+  
int i=stack[top--]; bj` cYL%  
]!H*oP8a*  
pivotIndex=(i+j)/2; , 6\i  
pivot=data[pivotIndex]; >VP\@xt(R[  
#V-qS/ q"  
SortUtil.swap(data,pivotIndex,j); l ,)l"6OV  
g92M\5 x9  
file://partition S4<@ji  
l=i-1; | (P%<  
r=j; P,AS`=z  
do{ Rf2/[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `h5HA-ud  
SortUtil.swap(data,l,r); `g% ]z@'+?  
} aq"E@fb  
while(l SortUtil.swap(data,l,r); rBs7,h  
SortUtil.swap(data,l,j); y5?T`ts,#  
Cq1t[a  
if((l-i)>THRESHOLD){ #Q6wv/"Ub  
stack[++top]=i; bf3LNV|  
stack[++top]=l-1; '.~vN L+ O  
} dv4)fG]W;_  
if((j-l)>THRESHOLD){ ,)V*xpp  
stack[++top]=l+1; +`f gn9p  
stack[++top]=j; .}ZX~k&P  
} 6f 6_ztTL  
aGp <%d  
} 6N.mSnp  
file://new InsertSort().sort(data); 0]8+rWp|Nz  
insertSort(data); FVG|5'V^  
} &{&lCBN  
/** H*|Bukgt/M  
* @param data &.kg8|s{  
*/ n i@D7:h  
private void insertSort(int[] data) { v)N6ZOj*C  
int temp; i#lvt#2J0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m'k`p5[=h  
} &g,K5at  
} R2Tvo?xI7  
} ?-<t-3%hyV  
"r cPJX  
} <)Kjf/x  
T'XAcH  
归并排序: (#c5Q&  
_'n;rZ+  
package org.rut.util.algorithm.support; #CV(F$\1{  
2)RW*Qu;+  
import org.rut.util.algorithm.SortUtil; e_]1e 7t  
o)}b Fw  
/** 4)2*|w  
* @author treeroot oBqP^uT>a|  
* @since 2006-2-2 Fh v)  
* @version 1.0 :;0?;dpO  
*/ { KwLcSn  
public class MergeSort implements SortUtil.Sort{ /7S]%UY  
R$,`}@VqZ3  
/* (non-Javadoc) nq/xD;q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?0[%+AD hM  
*/ &[cL%pP  
public void sort(int[] data) { w])~m1yW  
int[] temp=new int[data.length]; [$[t.m  
mergeSort(data,temp,0,data.length-1); ieBW 0eMi  
} (/"T=`3t  
.[cT3l/t  
private void mergeSort(int[] data,int[] temp,int l,int r){ .U5+PQN  
int mid=(l+r)/2; &[*<>  
if(l==r) return ; 08k1 w,6W  
mergeSort(data,temp,l,mid); *B:{g>0  
mergeSort(data,temp,mid+1,r); od^ha  
for(int i=l;i<=r;i++){ QH\*l~;B\  
temp=data; ^ fK8~g;rB  
} I]SR.Yp%  
int i1=l;  vA`[#(C  
int i2=mid+1; 5 @[%P=  
for(int cur=l;cur<=r;cur++){ }sJ% InL  
if(i1==mid+1) }f&7<E  
data[cur]=temp[i2++]; )CR8-z1`  
else if(i2>r) 3%EwA\V(  
data[cur]=temp[i1++]; 1b|<   
else if(temp[i1] data[cur]=temp[i1++]; #s yP=  
else HqYaQ~Dth  
data[cur]=temp[i2++]; ;o^m"I\y  
} G#@<bg3  
} ;k/0N~  
#i2q}/w5`C  
} :L`z~/6  
^* DKF  
改进后的归并排序: :+Dn]:\  
KAsS= `  
package org.rut.util.algorithm.support; 3&' STPpW  
1~7y]d?%  
import org.rut.util.algorithm.SortUtil; G$@X>)2N8  
82/iVm1  
/** K=(&iq!VO  
* @author treeroot }|SVt`n  
* @since 2006-2-2 #UWQ (+F  
* @version 1.0 6@F Z,e  
*/ 3"L$*toRA  
public class ImprovedMergeSort implements SortUtil.Sort { @XIwp2A{+  
'.kbXw0}  
private static final int THRESHOLD = 10; *;gi52tM  
?,%N?  
/* HYg _{  
* (non-Javadoc) xD1wHp!+  
* HKxrBQr78  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UVI=&y]c,p  
*/ "R9kF-  
public void sort(int[] data) { H`io|~Q  
int[] temp=new int[data.length]; in+`zfUJ9  
mergeSort(data,temp,0,data.length-1); {?L}qV  
} [e^i".  
^9{ 2  
private void mergeSort(int[] data, int[] temp, int l, int r) { v#/,,)m  
int i, j, k; 6|jE3rHw  
int mid = (l + r) / 2; M]_vb,=1  
if (l == r) z.H`a+cl  
return; qob!!A14p  
if ((mid - l) >= THRESHOLD) d,0pNav)  
mergeSort(data, temp, l, mid); A23Z)`  
else )7`~U"r  
insertSort(data, l, mid - l + 1); 0>?mF]M  
if ((r - mid) > THRESHOLD) ~~fL`"  
mergeSort(data, temp, mid + 1, r); ?b7vc^E&  
else gTQ6B,`/8  
insertSort(data, mid + 1, r - mid); Xs?>6i@$$  
rU~"A  
for (i = l; i <= mid; i++) { GYs4#40  
temp = data; 4%6Q+LS']Q  
} 1b D c ct  
for (j = 1; j <= r - mid; j++) { ePY K^D  
temp[r - j + 1] = data[j + mid]; ~ ZDdzp>  
} tllg$CQ5  
int a = temp[l]; qzmZ/z96  
int b = temp[r]; #tfJ?w`  
for (i = l, j = r, k = l; k <= r; k++) { ypifXO;m7  
if (a < b) { 7SM/bJ-M#  
data[k] = temp[i++]; 6/n;u{|  
a = temp; mcR!P~"i  
} else { k/mY. 2yPv  
data[k] = temp[j--]; V\xQM;  
b = temp[j]; 0ib 6}L%  
} Pb`sn5;  
} #,9|Hr%  
} bQ4 }no0  
a&cV@~  
/** w##Fpv<m  
* @param data (#,.;Y  
* @param l v|'N|k l  
* @param i {38aaf|'/  
*/ .5z|g@ 6  
private void insertSort(int[] data, int start, int len) { ZuhT \l  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !3&}r  
} h}d7M55#|  
} G?g7G,|d  
} Z:OO|x  
} KWYG\#S0]  
^49moC-  
堆排序: 8]L.E  
Lr~K3nb  
package org.rut.util.algorithm.support; ?t"PawBWE  
3HiW1*5W  
import org.rut.util.algorithm.SortUtil; lt]U?VZ   
p?h;Sv/  
/** INT2i8oU  
* @author treeroot zJy{Ry[Sb  
* @since 2006-2-2 W | }Hl{}  
* @version 1.0 `sXx,sV?B  
*/ 0T5>i 0/  
public class HeapSort implements SortUtil.Sort{ 7lpVK]  
u rOGOa$  
/* (non-Javadoc) .G]# _U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gdT_kb5HL8  
*/ vP2QAGk <  
public void sort(int[] data) { !L _ SHlU  
MaxHeap h=new MaxHeap(); uj@<_|7  
h.init(data); -a[{cu{  
for(int i=0;i h.remove(); &|4Uo5qS=Z  
System.arraycopy(h.queue,1,data,0,data.length); LNb![Rq  
} 4tU~ ^z  
Y[DKj!v  
private static class MaxHeap{ ,+RO 5n  
1L|(:m+  
void init(int[] data){ ? `KOW  
this.queue=new int[data.length+1]; ..:V3]-D  
for(int i=0;i queue[++size]=data; S#9SAX [  
fixUp(size); [:'n+D=T3M  
} C"{on%  
} (D{}1sZBQ  
#.)>geLC>9  
private int size=0; l.juys8s  
85 hYYB0v  
private int[] queue; jJvNN -^  
6T s`5$e  
public int get() { -(.7/G'Vk>  
return queue[1]; 57>ne)51  
} _XZ=4s  
{+:XVT_+  
public void remove() { o0L#39`' g  
SortUtil.swap(queue,1,size--); A]9JbNV  
fixDown(1); bAiw]xi  
} {p 0'Lc<3n  
file://fixdown B>ZPn6?y  
private void fixDown(int k) { A& F4;>dms  
int j; q@9 i3*q;  
while ((j = k << 1) <= size) { mmL~`i/  
if (j < size %26amp;%26amp; queue[j] j++; ;Y^RF?un  
if (queue[k]>queue[j]) file://不用交换 <^Tj}5 )n  
break; m #QI*R XP  
SortUtil.swap(queue,j,k); *F*X_O  
k = j; ;%<4U^2  
} Y,yaB)&Ih  
} @45H8|:k  
private void fixUp(int k) { [u80-x<  
while (k > 1) { (do=o&9p m  
int j = k >> 1; hhGpB$A  
if (queue[j]>queue[k]) H\mVK!](D  
break; %#9~V  
SortUtil.swap(queue,j,k); Yk Pt*?,P/  
k = j; E+zn\v  
} fJ2{w[ne  
} 3L?a4,Q"k}  
GuWBl$|+b  
} fm>K4\2  
]F;]<_  
} 2hJ3m+N^  
,~xU>L^  
SortUtil: ssITe., ny  
>` QX xTn  
package org.rut.util.algorithm; g{hA,-3  
[Z\1"m  
import org.rut.util.algorithm.support.BubbleSort; ?w/nZQWi  
import org.rut.util.algorithm.support.HeapSort; .~L4#V{c~  
import org.rut.util.algorithm.support.ImprovedMergeSort; zI!R-Nb  
import org.rut.util.algorithm.support.ImprovedQuickSort; *hs<Ez.cC  
import org.rut.util.algorithm.support.InsertSort; v6?\65w,|  
import org.rut.util.algorithm.support.MergeSort; m 1i+{((  
import org.rut.util.algorithm.support.QuickSort; yQ{_\t1Wd  
import org.rut.util.algorithm.support.SelectionSort; [9om"'  
import org.rut.util.algorithm.support.ShellSort; /'6[*]IZP  
lhl 0  
/** Ko)T>8:  
* @author treeroot T zYgH  
* @since 2006-2-2 NB5B$q_'#  
* @version 1.0 -_DiD^UcXn  
*/ ;}~Bv<#  
public class SortUtil { Z4ov  
public final static int INSERT = 1; So%1RY{ )  
public final static int BUBBLE = 2; G@EjWZQ  
public final static int SELECTION = 3; sFCs_u1tNN  
public final static int SHELL = 4; j :Jdwf  
public final static int QUICK = 5; !a(qqZ|s  
public final static int IMPROVED_QUICK = 6; 0Y*gJ!a  
public final static int MERGE = 7; {mnSTL`  
public final static int IMPROVED_MERGE = 8; dG>Wu o  
public final static int HEAP = 9; 8/?uU]#Q  
l=~9 9mE  
public static void sort(int[] data) { `OReSg 2  
sort(data, IMPROVED_QUICK); %GCd?cFF  
} D.R|HqZ  
private static String[] name={ 8sF0]J[g{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;To+,`?E;q  
}; UN?T}p- oF  
C%?D E@k  
private static Sort[] impl=new Sort[]{ {_ho!OS>  
new InsertSort(), {C0^D*U:  
new BubbleSort(), "rDzrz  
new SelectionSort(), }_:#fE  
new ShellSort(), =tRe3o0(  
new QuickSort(), lEb R)B,  
new ImprovedQuickSort(), ilcy/  
new MergeSort(), 1qKxg  
new ImprovedMergeSort(), k>;r9^D  
new HeapSort() t>GLZzO  
}; 'a/6]%QFd!  
H&=4y) /.  
public static String toString(int algorithm){ h9w^7MbO  
return name[algorithm-1]; 1\J1yOL  
} }:l%,DBw  
5YG@[ic  
public static void sort(int[] data, int algorithm) { <T.#A8c  
impl[algorithm-1].sort(data); C\ 2 >7  
} ?CW^*So  
P}WhE  
public static interface Sort { X`v79`g_  
public void sort(int[] data); FlA\Ad;v  
} l)PFzIz=V  
vua1iN1  
public static void swap(int[] data, int i, int j) { aco}pXz  
int temp = data; l^y?L4hg)  
data = data[j]; 6dR-HhF  
data[j] = temp; m>-^ K  
} u3i| }`  
} "ko?att~  
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