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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。 F#.ph?W  
插入排序: \[ 4y  
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package org.rut.util.algorithm.support; g~76c.u-  
j@{dsS: 6  
import org.rut.util.algorithm.SortUtil; .-Dc%ap]  
/** CW]Th-xc  
* @author treeroot >qd=lm <,  
* @since 2006-2-2 A>_,tt  
* @version 1.0 Y) l=r^Ap>  
*/ J :KU~`r  
public class InsertSort implements SortUtil.Sort{ q)J5tBfJ  
_7dp(R  
/* (non-Javadoc) Z EvK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z{?T1 =n  
*/ >=.3Vydi1  
public void sort(int[] data) { Rgl cd  
int temp; [.&n,.k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ei=rBi  
} =J'Q%qN<Zd  
} Hlpt zez  
} ]0W64cuT  
e&!8UYP  
} $xjfW/k?M  
PX`xr1o  
冒泡排序: 6E.[F\u  
{uJ"%  
package org.rut.util.algorithm.support; SIc~cZ!Yu  
_/Ay$l;F  
import org.rut.util.algorithm.SortUtil; `g0^ W/ j  
k(_OhV_  
/** DhD##5a  
* @author treeroot <5}j(jxz}  
* @since 2006-2-2 : t /0  
* @version 1.0 4&v&XLkb  
*/ f>3)}9?xc}  
public class BubbleSort implements SortUtil.Sort{ n^*,JL 9@  
oA@c.%&  
/* (non-Javadoc) pWP1$;8   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <qEBF`XP=  
*/ :[0)Uu{  
public void sort(int[] data) { .K`n;lVs  
int temp; -<M+$hK\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "bQi+@  
if(data[j] SortUtil.swap(data,j,j-1); k;)mc+ ~+  
} w^,Xa  
} WZh_z^rwn  
} y,w_x,m  
} L!,@_   
=d]}7PO ~  
} ( GoPXh  
}}k*i0  
选择排序: 5u3KL A  
?Mn~XN4F_  
package org.rut.util.algorithm.support; i'\-Y]?[  
?CcX>R-/  
import org.rut.util.algorithm.SortUtil; D0z[h(m  
F/3L^k]  
/** B+Ft  >  
* @author treeroot KVUub'k  
* @since 2006-2-2 $`lm]} {&  
* @version 1.0 \,r* -jr  
*/ ]Tg@wMgI  
public class SelectionSort implements SortUtil.Sort { 2 )3oX  
,t:P  
/* Ge7B%p8  
* (non-Javadoc) W1Ye+vg/s  
* ,+I]\ZeO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %s^1de  
*/ G;EJ\J6@Yw  
public void sort(int[] data) { E&5S[n9{3  
int temp; o wb+,Gk(  
for (int i = 0; i < data.length; i++) { ^7Z;=]8J  
int lowIndex = i; %b2Hm9r+  
for (int j = data.length - 1; j > i; j--) { RzzU+r  
if (data[j] < data[lowIndex]) { :R>RCR2g)  
lowIndex = j; k 8%@PC$  
} ZX8@/8sv  
} 7AWq3i{  
SortUtil.swap(data,i,lowIndex); A}&YK,$5ED  
} .rnT'""i<5  
} rBy0hGx  
62y:i  
} R0LWuE%eD  
1&<o3)L:  
Shell排序: axq~56"7E  
MUGoW;}v )  
package org.rut.util.algorithm.support; RDjw|V  
EuImj#Zl  
import org.rut.util.algorithm.SortUtil; nwC*w`4  
J@}PySq  
/** ^ meU&  
* @author treeroot 96J]g*o(uU  
* @since 2006-2-2 B692Mn  
* @version 1.0 y` '#gH  
*/ lyyf&?2  
public class ShellSort implements SortUtil.Sort{ foL4s;2  
qywl G  
/* (non-Javadoc) lNtxM"G&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  7Z<GlNv  
*/ ^u1Nbo  
public void sort(int[] data) { 8#- Nx]VM  
for(int i=data.length/2;i>2;i/=2){ uXLZ!LJo  
for(int j=0;j insertSort(data,j,i); %e3E}m>  
} V0W4M%  
} V\opC6*L_e  
insertSort(data,0,1); DS>&|zF5l  
} vqO#Z  
dNF_ T?E\  
/** `'k2gq&  
* @param data  N&kUTSd  
* @param j * fj`+J  
* @param i uOy/c 8`  
*/ v?}0h5  
private void insertSort(int[] data, int start, int inc) { udIm}jRA"  
int temp; -.ZP<,?@F  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \Q1&w2mw  
} q9{)nU  
} =5V7212  
} MI^$df  
"PO8Q  
} j(]O$""  
`wU['{=  
快速排序: HW,v"  
x?0K'  
package org.rut.util.algorithm.support; ;134$7!Y  
:FtV~^Z  
import org.rut.util.algorithm.SortUtil; F]r'j ZL  
U{LS_VI~  
/** aNNRw(0/  
* @author treeroot y'I m/{9U  
* @since 2006-2-2 %#eQN ~  
* @version 1.0 ^FBu|e AkE  
*/ Kg2Du'WQ^  
public class QuickSort implements SortUtil.Sort{ c00rq ~<K  
D %)L "5C  
/* (non-Javadoc) ~{5v a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nvXjW@)`  
*/ R8eBIJ/@_  
public void sort(int[] data) { Dq$1 j%4Y  
quickSort(data,0,data.length-1); _>kc:  
} g,M-[o=Fk  
private void quickSort(int[] data,int i,int j){ d;wq@ e  
int pivotIndex=(i+j)/2; js"5{w&  
file://swap "`cPV){]  
SortUtil.swap(data,pivotIndex,j); Mx`';z8~  
zwJ&K;"y(  
int k=partition(data,i-1,j,data[j]); ;' vkF  
SortUtil.swap(data,k,j); i8-Y,&>V  
if((k-i)>1) quickSort(data,i,k-1); #\n* Qg4p  
if((j-k)>1) quickSort(data,k+1,j); >A6W^J|[  
wy${EY^h  
} CI-za !T  
/** L?N-uocT  
* @param data NCG;`B`i  
* @param i {6:*c  
* @param j #OM)71kB8  
* @return =BE!  
*/ 2;s[m3  
private int partition(int[] data, int l, int r,int pivot) { JoiGuZd>  
do{ a%si:_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ty rP[y  
SortUtil.swap(data,l,r); -WF((s;<#  
} II.: k.D`  
while(l SortUtil.swap(data,l,r); zNoFM/1Vb  
return l; 3o?eUwI}  
} ' VCuMCV  
.r6x9t  
} {"{]S12N  
{ AYW C6Y  
改进后的快速排序: U4K ZPk  
z |~+0  
package org.rut.util.algorithm.support; ,(K-;Id4  
QSa#}vCp*  
import org.rut.util.algorithm.SortUtil; Y:,C_^$w;  
JW^ ${4  
/** 4OgH+<G  
* @author treeroot tUc<ExvP,  
* @since 2006-2-2 .IdbaH _a  
* @version 1.0 };9s8VZE  
*/ )lS04|s  
public class ImprovedQuickSort implements SortUtil.Sort { TaHcvjhR  
_LC*_LT_  
private static int MAX_STACK_SIZE=4096; 37a1O>A  
private static int THRESHOLD=10; IjRUr\l  
/* (non-Javadoc) >Jx=k"Kv+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GF% /q:9  
*/ uK"FopUJ4i  
public void sort(int[] data) {  'F.P93  
int[] stack=new int[MAX_STACK_SIZE]; sRT H_]c  
`VO;\s$5j  
int top=-1; n9={D  
int pivot; q@[F|EF=  
int pivotIndex,l,r; *9kg \#  
-wV2 79^b  
stack[++top]=0; ov,s]g83  
stack[++top]=data.length-1; h`N2M,  
#\m.3!Hcr  
while(top>0){ rnhLv$  
int j=stack[top--]; 0LL0\ly]  
int i=stack[top--]; : q%1Vi  
tNzO1BK  
pivotIndex=(i+j)/2; HB5-B XBU  
pivot=data[pivotIndex]; * BR#^Wt  
} f&=}  
SortUtil.swap(data,pivotIndex,j); Zf!Q4a"  
,;w~ VZ4  
file://partition Y]0c%Fd  
l=i-1; FVrB#Hw~  
r=j; +<F3}]]  
do{ +<[q"3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uE9,N$\L_  
SortUtil.swap(data,l,r); 2!B|w8ar  
} Q}lCQK/g  
while(l SortUtil.swap(data,l,r); P<vU!`x% q  
SortUtil.swap(data,l,j); @- |G_BZ  
U~7udUR  
if((l-i)>THRESHOLD){ L@AFt)U  
stack[++top]=i; (W:@v&p  
stack[++top]=l-1; $RYGAh  
} P* 0kz@  
if((j-l)>THRESHOLD){ L f"!:]  
stack[++top]=l+1; [y'blCb  
stack[++top]=j; qQ3Q4R\  
} q/I( e  
;2`6eyr  
} dB4ifeT]  
file://new InsertSort().sort(data); -A w]b} #v  
insertSort(data); p$1 'e,G  
} "ufSHrZv  
/** Bx|W#:3e  
* @param data ,Owk;MV@  
*/ CA`V)XIsP  
private void insertSort(int[] data) { Lv%t*s2$/  
int temp; GyQFR?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /K&9c !]$C  
} O5p$ A @  
} e3CFW_p  
} ky[Cx!81C  
0:[A4S`X  
} L QV@]z&  
#1'q'f:7 &  
归并排序: }>BNdm"Er  
Bj \ x  
package org.rut.util.algorithm.support; ~"`e9Im  
hjg1By(  
import org.rut.util.algorithm.SortUtil; .p e3L7g  
Q34u>VkdQI  
/** ^lV}![do!  
* @author treeroot V>)/z|[  
* @since 2006-2-2 MSM8wYcD  
* @version 1.0 dyn)KDS  
*/ ~%>i lWaHB  
public class MergeSort implements SortUtil.Sort{ *'8q?R?7g  
~v2(sRJ  
/* (non-Javadoc) ma*#*4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A ~vx,|I  
*/ 61kSCu  
public void sort(int[] data) { b; C}=gg  
int[] temp=new int[data.length]; 4lX_2QT]E  
mergeSort(data,temp,0,data.length-1); unn2I|XH  
} 2H9hN4N  
d<j`=QH  
private void mergeSort(int[] data,int[] temp,int l,int r){ Wgte.K> /  
int mid=(l+r)/2; :~"m yn,  
if(l==r) return ; d"-I^|[OM  
mergeSort(data,temp,l,mid); Ff/Ap&0+  
mergeSort(data,temp,mid+1,r); r4iNX+h?V  
for(int i=l;i<=r;i++){ V||b%Cb1g  
temp=data; zx\-He  
} = >TU  
int i1=l; q9ra  
int i2=mid+1; 5"57F88Y1  
for(int cur=l;cur<=r;cur++){ +5|k#'%5  
if(i1==mid+1) PV~D;  
data[cur]=temp[i2++]; nsi? .c&0!  
else if(i2>r) Ojl X<y.  
data[cur]=temp[i1++]; E%v0@  
else if(temp[i1] data[cur]=temp[i1++]; [nVBnB  
else U'" #jT  
data[cur]=temp[i2++]; [#@lsI  
} qtAt=` s  
} `W)?d I?#M  
1ds4C:M+<  
} 4pT^ *  
MFa/%O_*  
改进后的归并排序: zC)JOykI%  
(,o@/ -o  
package org.rut.util.algorithm.support; |T"vF`Kr(>  
/"La@M37  
import org.rut.util.algorithm.SortUtil; Iv  
<]G'& iv>  
/** "A Bt  
* @author treeroot &)Qq%\EP4  
* @since 2006-2-2 #OM'2@  
* @version 1.0 MCibYv c[  
*/ [Y*>x2X  
public class ImprovedMergeSort implements SortUtil.Sort { Rjq\$aY}%  
Wu{_QuAB  
private static final int THRESHOLD = 10; dI%jR&.e;  
ZPE-  
/* kI(3Pf ].  
* (non-Javadoc) /YZMP'v  
* Co(N8>1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wm-$l  
*/ F%p DF\  
public void sort(int[] data) { ["&{^  
int[] temp=new int[data.length]; }Em{?Hqy  
mergeSort(data,temp,0,data.length-1); 00i MU  
} H:hM(m0?q  
!YGHJwW:  
private void mergeSort(int[] data, int[] temp, int l, int r) { N5zWeFq@6  
int i, j, k; up['<Kt+a  
int mid = (l + r) / 2; L$O\fhO?  
if (l == r) D ON.)F  
return; E@k'uyIu  
if ((mid - l) >= THRESHOLD) XTX/vbge3m  
mergeSort(data, temp, l, mid); y{3+Un  
else R3og]=uFzm  
insertSort(data, l, mid - l + 1); AC <2.i_  
if ((r - mid) > THRESHOLD) U { 0~&  
mergeSort(data, temp, mid + 1, r); a"YVr'|  
else 9jf9 u0  
insertSort(data, mid + 1, r - mid); V]J"v#!{  
D<FQVdP  
for (i = l; i <= mid; i++) { WynTU?  
temp = data; .^=I&X/P  
} u(1m#xr8$  
for (j = 1; j <= r - mid; j++) { dDl+  
temp[r - j + 1] = data[j + mid]; 0|-}>>qb\  
} n[!QrEeR},  
int a = temp[l]; 4t =Kt  
int b = temp[r]; Pf4zjc  
for (i = l, j = r, k = l; k <= r; k++) { '"7b;%EN'  
if (a < b) { {:"<E?+  
data[k] = temp[i++]; vzfMME17  
a = temp; 25`W"x_  
} else { N}VoO0I  
data[k] = temp[j--]; 53aJnxX  
b = temp[j]; k?Hi_;o  
} LvS5N)[  
} yc]_?S>9  
} T=pP  
_J \zj  
/** U3B&3K} ~  
* @param data "zNS6I?rzE  
* @param l 2"a%%fv  
* @param i l]&A5tz3  
*/ 3 $%#n*  
private void insertSort(int[] data, int start, int len) { w)S 4Xi=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ZG H 7_K  
} FLQke"6i0:  
} j}Svb1A  
} Ji,;ri2i  
} :kI[Pf!z  
X4:84  
堆排序: jbe:"S tw  
JE:LA+ (  
package org.rut.util.algorithm.support; B0yGr\KJ  
XN t` 4$L  
import org.rut.util.algorithm.SortUtil; Q?j '4  
0&NM=~  
/** R?lTB3"  
* @author treeroot ']2d^'TH  
* @since 2006-2-2 ) C~#W  
* @version 1.0  Rh6CV  
*/ j8e=],sQ  
public class HeapSort implements SortUtil.Sort{ y'2w*?  
r%=a:GdAg  
/* (non-Javadoc) L=Aj+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z"7?I$N Q  
*/ T;Kv<G;  
public void sort(int[] data) { J_&cI%.  
MaxHeap h=new MaxHeap(); 7ZAxhFC  
h.init(data); YG*<jKcX  
for(int i=0;i h.remove(); w-)JCdS6Tb  
System.arraycopy(h.queue,1,data,0,data.length); wsrdBxd5  
} 8Wtr,%82  
fl4@5AVY  
private static class MaxHeap{ a0JMLLa [I  
<w~$S0_  
void init(int[] data){ 7W},5c  
this.queue=new int[data.length+1]; V+>RF  
for(int i=0;i queue[++size]=data; d <ES  
fixUp(size); <<qzZ+u  
} [8tpU&J  
} >(n /  
ho^c#>81  
private int size=0; `r=^{Y  
4?(=?0/[  
private int[] queue; (K6vXq.;\\  
|uFb(kL[U  
public int get() { l#ct;KZ  
return queue[1]; g1F9IB42@<  
} nw*a?$S3  
{7IZN< e  
public void remove() { {be|G^.c  
SortUtil.swap(queue,1,size--); A`vRUl,c=  
fixDown(1); :SN?t  
} OBlQ   
file://fixdown $M-"az]  
private void fixDown(int k) { rFC9y o  
int j; 23=wz%tF  
while ((j = k << 1) <= size) { \[]BB5)8  
if (j < size %26amp;%26amp; queue[j] j++; jsV1~1:83  
if (queue[k]>queue[j]) file://不用交换 H 9/m6F  
break; er 1zSTkg  
SortUtil.swap(queue,j,k); `3K."/N6c  
k = j; I YptNR  
} UZiL NKc  
} <uoVGV5N  
private void fixUp(int k) { 0.!vp?  
while (k > 1) {  874j9ky[  
int j = k >> 1; j";L{  
if (queue[j]>queue[k]) Xsb.xxK.  
break; (Y&gse1}!  
SortUtil.swap(queue,j,k); ;gJAxVD<  
k = j; <|WXFjn  
} 33}p02#  
} 2}P{7flDY  
g(jn /Cx  
} {KTZSs $n  
hQzT =0  
} o4rf[.z  
rWM5&M  
SortUtil: _q-k1$ o$  
)99^58my  
package org.rut.util.algorithm; vsA/iH.  
Q}lY1LT`  
import org.rut.util.algorithm.support.BubbleSort; %AT/g&M&1#  
import org.rut.util.algorithm.support.HeapSort; _iqaKYT$  
import org.rut.util.algorithm.support.ImprovedMergeSort; A5}N[|z  
import org.rut.util.algorithm.support.ImprovedQuickSort; ==KDr 0|G  
import org.rut.util.algorithm.support.InsertSort; VL\Ah3+  
import org.rut.util.algorithm.support.MergeSort; >W:kTS<  
import org.rut.util.algorithm.support.QuickSort; c2gZ<[~  
import org.rut.util.algorithm.support.SelectionSort; .ArOZ{lKD>  
import org.rut.util.algorithm.support.ShellSort; 0"sZP\<p  
54]UfmT%I  
/** L)H/t6}i  
* @author treeroot 'UCClj;?K  
* @since 2006-2-2 j6*e^ B  
* @version 1.0 Xe ^NVF  
*/ h^H)p`[Gme  
public class SortUtil { A}uWy^w  
public final static int INSERT = 1; SrMfd7H8f  
public final static int BUBBLE = 2; #; P-*P  
public final static int SELECTION = 3; >^@~}]L  
public final static int SHELL = 4; Zwtz )ZII  
public final static int QUICK = 5; (w<llb`]  
public final static int IMPROVED_QUICK = 6; sA"B/C|(g  
public final static int MERGE = 7; \<} e?Yx%  
public final static int IMPROVED_MERGE = 8; gZz5P>^  
public final static int HEAP = 9; mX @xV*  
*L<<S=g$2  
public static void sort(int[] data) { _>t6]?*  
sort(data, IMPROVED_QUICK); ob)c0Pz  
} 6SAYe%e  
private static String[] name={ ?%>S5,f_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8js1m55KT  
}; zb!RfQ,  
\%W"KLP  
private static Sort[] impl=new Sort[]{ 0o@eE3^  
new InsertSort(), %NhZTmWm  
new BubbleSort(), 0)vX  
new SelectionSort(), 9~r8$,e  
new ShellSort(), ``h* A  
new QuickSort(), \gir  
new ImprovedQuickSort(), Jjx1`S*i  
new MergeSort(), >ISBK[=H  
new ImprovedMergeSort(), )RT:u)N  
new HeapSort() @Rqn&tA8  
}; 99Nm?$ g  
%F0.TR!!n  
public static String toString(int algorithm){ )*BG-nM u  
return name[algorithm-1]; T' )l  
} YipL_&-  
Q"GZh.m  
public static void sort(int[] data, int algorithm) { <)oW  
impl[algorithm-1].sort(data); u-wj\BU  
} =kW7|c5Z  
5q}7#{A  
public static interface Sort { RDu{U(!  
public void sort(int[] data); ~N+H7T.L  
} H$3:Ra+ S  
7Rr +Uzb(  
public static void swap(int[] data, int i, int j) { $r(9'm}W  
int temp = data; ~Y7:08  
data = data[j]; ~2 J!I^ J  
data[j] = temp; Y c>.P  
} jQ P2[\  
} K@!Gs'Op  
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