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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。 (j}edRUnB  
插入排序: lF$$~G  
<yKyM#4X  
package org.rut.util.algorithm.support; ;FjI!V  
{5T:7*J  
import org.rut.util.algorithm.SortUtil; w6l56 CB`  
/** v XR27  
* @author treeroot `u8=~]rblj  
* @since 2006-2-2 y$?O0S%F  
* @version 1.0 pzDz@lAwR  
*/ V##TG0  
public class InsertSort implements SortUtil.Sort{ * \ tR  
N)YoWA>#bF  
/* (non-Javadoc) :-b-)*TC;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^cojETOv  
*/ /5:qS\Zl  
public void sort(int[] data) { @])}+4D(S  
int temp; x=44ITe1n[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S ^@# %>  
} `6G:<wX  
} u$1^=  
} 5S #6{Y =  
\Xg`@JrTM  
} ;;zd/n2b  
rGSi !q  
冒泡排序: #Xun>0  
!p 70g0+  
package org.rut.util.algorithm.support; xb^M33-y  
E._/PB  
import org.rut.util.algorithm.SortUtil; (/J %Huy  
9OM&&Ue<E  
/** X^. ~f+d~  
* @author treeroot V}t8H  
* @since 2006-2-2 <kWNx.eci  
* @version 1.0 R!_1*H$  
*/ 1++Fs  
public class BubbleSort implements SortUtil.Sort{ atfK?VK#  
\ id(P3M  
/* (non-Javadoc) FVoKNaK-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +L}R|ihkI  
*/ bKPjxN?!9  
public void sort(int[] data) { #r80FVwiD  
int temp; boIFN;Aq"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ q%Lw#f  
if(data[j] SortUtil.swap(data,j,j-1); ch0x*[N@  
} ~ZRtNL9   
} T;B/ Wm!x  
} x@<!#d+  
} l65Qk2<YC  
(7}Zh|@W  
} `qr.@0whP  
vb k4  
选择排序: :j% B(@b  
kX'a*AG  
package org.rut.util.algorithm.support; KU;m.{  
unkA%x{W;  
import org.rut.util.algorithm.SortUtil; ~RnBs`&!  
qnU$Pd  
/** lKy4Nry9  
* @author treeroot 1?#Wg>7'  
* @since 2006-2-2 c}#(,<8X  
* @version 1.0 @-}!o&G0  
*/ ny+_&l^R~(  
public class SelectionSort implements SortUtil.Sort { *|/kKvN  
H AMps[D[  
/* OMN|ea.O  
* (non-Javadoc) ZvW&%*k=  
* O9MBQNwjA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z%WOv ~8~  
*/ ]hA]o7 k  
public void sort(int[] data) { LfG$?<}hR  
int temp; R~XNF/QMl  
for (int i = 0; i < data.length; i++) { I$Fr8R$  
int lowIndex = i; ~2?UEv6  
for (int j = data.length - 1; j > i; j--) { fZJO}  
if (data[j] < data[lowIndex]) { /)xQ# yfX  
lowIndex = j; 'lR f  
} #'h(o/hz&&  
} ))#_@CwRr  
SortUtil.swap(data,i,lowIndex); [wjH;f>SQ  
} '3ZYoA%  
} >U') ICD~  
c jBHczkY  
} F5f1j]c  
{]:B80I;2  
Shell排序: ^]?Yd)v  
n(el  
package org.rut.util.algorithm.support; :Nw7!fd  
Ph C{Gg  
import org.rut.util.algorithm.SortUtil; ~dj4Q eu  
.2STBh.;  
/** 5%(xZ  6  
* @author treeroot B?<Z(d7  
* @since 2006-2-2 OL$^7FB  
* @version 1.0 3ocRq %%K  
*/ +N!!Z2  
public class ShellSort implements SortUtil.Sort{ %p.hwgvnp  
O7tL,)Vv  
/* (non-Javadoc) -`e`U%n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [$(/H;  
*/ >CPoeIHK  
public void sort(int[] data) { ZlsdO.G  
for(int i=data.length/2;i>2;i/=2){ ~m@w p  
for(int j=0;j insertSort(data,j,i); H3" D$Nv  
} s$;IR c5!6  
} Y@M l}43  
insertSort(data,0,1); "]{"4qV1=  
} 8\ WOss)al  
cK+y3`.0  
/** r=pb7=M#LN  
* @param data &>o?0A6  
* @param j "J6 aU  
* @param i lIF*$#`oh*  
*/ {uMqd-Uu  
private void insertSort(int[] data, int start, int inc) { ;X2(G  
int temp; J*CfG;Y:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Oe%jV,S|V  
} I`}<1~ue  
} Qz?r4kR  
} ='|HUxFi  
HxH=~B1"P  
} Z8Il3b*)  
T~'9p`IW  
快速排序: lEv<n6:_  
wC[Bh^]  
package org.rut.util.algorithm.support; o+Kh2;$)  
;P4tqY@  
import org.rut.util.algorithm.SortUtil; N8:&v  
)IP{yL8c  
/** *Ad7GG1/u  
* @author treeroot #T8$NZA  
* @since 2006-2-2 4$!iw3N(  
* @version 1.0 zE NlL  
*/ (" >gLr  
public class QuickSort implements SortUtil.Sort{ "ZyWU f  
pu*vFwZ  
/* (non-Javadoc) Y4|g^>{<ni  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xiPP&$mg  
*/ g"Z X1X  
public void sort(int[] data) { R7 *ek_  
quickSort(data,0,data.length-1); Li;(~_62a]  
} QWBQ 0#L  
private void quickSort(int[] data,int i,int j){ \aO.LwYm;:  
int pivotIndex=(i+j)/2; ]xIfgSq  
file://swap [#R<Z+c  
SortUtil.swap(data,pivotIndex,j); NCM&6<_  
: Gz#4k  
int k=partition(data,i-1,j,data[j]); zl !`*{T{  
SortUtil.swap(data,k,j); ly] n2RK  
if((k-i)>1) quickSort(data,i,k-1); ~|~j01#  
if((j-k)>1) quickSort(data,k+1,j); /M "E5  
'{:Yg3K  
} MrA&xM  
/** !*gTC1bvB  
* @param data 21BlLz  
* @param i 88ydAx#P  
* @param j sR. ecs+  
* @return IFY,j8~q  
*/ S qQqG3F  
private int partition(int[] data, int l, int r,int pivot) { sm>Hkci%  
do{ k(;c<Z{?1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^f,('0p- >  
SortUtil.swap(data,l,r); P2Ja*!K]  
} vK\;CSk  
while(l SortUtil.swap(data,l,r); y[l19eU  
return l; RZ[r XV5  
} cKX6pG  
1Bz'$u;  
} ,{{uRs/  
F W# S.<  
改进后的快速排序: ]{[VTjC7rY  
Z<#beT6  
package org.rut.util.algorithm.support; Vhww-A  
O$%C(n(  
import org.rut.util.algorithm.SortUtil; sQS2U6  
~4mgYzOmD`  
/** EO;f`s)t  
* @author treeroot fx QN  
* @since 2006-2-2 7n~BDqT  
* @version 1.0 "]nbM}>  
*/ ~qiSkG  
public class ImprovedQuickSort implements SortUtil.Sort { snBC +`-  
n8M/Y}mH   
private static int MAX_STACK_SIZE=4096;  F%6`D  
private static int THRESHOLD=10; imtW[y+4  
/* (non-Javadoc) j]"Yz t~u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jz$)*Kdi*  
*/ N3nk\)V\E  
public void sort(int[] data) { 1b'1vp  
int[] stack=new int[MAX_STACK_SIZE]; S`"M;%T  
U jC$Mi`O  
int top=-1; yoj5XBM  
int pivot; r^?%N3  
int pivotIndex,l,r; }q(IKH\&  
+mP3 y~|-j  
stack[++top]=0; $s hlNW\  
stack[++top]=data.length-1; zy#E qv  
x c-=;|s  
while(top>0){ 56o?=|  
int j=stack[top--]; m)q;eQs  
int i=stack[top--]; ~}mX#,  
sDCa&"6+@  
pivotIndex=(i+j)/2; I@ch 5vl4  
pivot=data[pivotIndex]; 3Lq?Y7#KQp  
`\&qk)ZP  
SortUtil.swap(data,pivotIndex,j); 48n>[ FMSR  
w<awCp  
file://partition F,e_`  
l=i-1; }tU<RvT  
r=j; ^AD/N|X^  
do{ 'MM#nQ\(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OZ_'& CZ  
SortUtil.swap(data,l,r); doxQS ohS  
} 8jjJ/Mz`  
while(l SortUtil.swap(data,l,r); -{ZTp8P>  
SortUtil.swap(data,l,j); r&\}E+  
E<a~ `e  
if((l-i)>THRESHOLD){ R$*{@U  
stack[++top]=i; WZCX&ui  
stack[++top]=l-1; 11 .RG *  
} HqU"i Y>b  
if((j-l)>THRESHOLD){ {61NLF\0H  
stack[++top]=l+1; "wxs  
stack[++top]=j; q]5"V>D \  
} D|Z,eench  
vdNh25a<h  
} @-;-DB]j  
file://new InsertSort().sort(data); Xig+[2zS  
insertSort(data); 1` m ~c  
} yaA9* k  
/** 5in6Y5ckj  
* @param data x-U^U.i@  
*/ P7 E}^y`e  
private void insertSort(int[] data) { [(`T*c.#.X  
int temp; d?&?$qf[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L"tj DAV  
} ^?toTU   
} DSy,#yA  
} /Yx 1S'5  
PF!Q2t5c3  
} f b_tda",}  
s iv KXd  
归并排序: .$4DK*  
5<a)SP 0  
package org.rut.util.algorithm.support; GA6Z{U{XS  
 tB[(o%k  
import org.rut.util.algorithm.SortUtil; iAT&C`,(&  
#0L :h ?L  
/** ^C):yxN P  
* @author treeroot q`}Q[Li  
* @since 2006-2-2 9))%tYN  
* @version 1.0 !hF b <  
*/ 0'|#Hi7@  
public class MergeSort implements SortUtil.Sort{ *H&a_s/{Nb  
h.4;-&  
/* (non-Javadoc) oRy?Dx+H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J*,Ed51&7  
*/ c1CP1 2  
public void sort(int[] data) { %o#D"  
int[] temp=new int[data.length]; [gzw<b:`  
mergeSort(data,temp,0,data.length-1); N(}7M~m>  
} &N*S   
~?-U J^#  
private void mergeSort(int[] data,int[] temp,int l,int r){ $1\<>sJH  
int mid=(l+r)/2; 5HL JkOV5  
if(l==r) return ;  h:#  
mergeSort(data,temp,l,mid); .rG Rdb  
mergeSort(data,temp,mid+1,r); ERGDo=j  
for(int i=l;i<=r;i++){ v[r:1T@  
temp=data; 0V}vVAa(B  
} @w6^*Z_hQ  
int i1=l; HC4ad0Gs+{  
int i2=mid+1; >}u?{_s *0  
for(int cur=l;cur<=r;cur++){ (LRv c!`"  
if(i1==mid+1) \E?1bc{\f  
data[cur]=temp[i2++]; O`t ]#  
else if(i2>r) =[t([DG  
data[cur]=temp[i1++]; )Ah  
else if(temp[i1] data[cur]=temp[i1++]; :'Imz   
else Fdu0?H2TL  
data[cur]=temp[i2++]; J%f5NSSU{6  
} 5&2=;?EO  
} `W?aq]4x5  
'/;#{("  
} *-_` xe  
A~nq4@uj  
改进后的归并排序: _\sm$ `q  
qg:1  
package org.rut.util.algorithm.support; ?*,N ?s(U  
AUS?P t[w  
import org.rut.util.algorithm.SortUtil; N.xmHvPk  
:XBeGNI*#  
/** l%fnGe` _  
* @author treeroot 8,dCx}X  
* @since 2006-2-2 0NpxqeIDY  
* @version 1.0 1.yw\ZC\  
*/ $hn_4$  
public class ImprovedMergeSort implements SortUtil.Sort { Zf]d'oW{/  
TDtk'=;  
private static final int THRESHOLD = 10; z ;y2 2  
MZ+8wr/y  
/* c !P9`l~MQ  
* (non-Javadoc) %>xW_5;Z  
* .b  N0!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8dIgw  
*/ L V33vy  
public void sort(int[] data) { W|D'S}J  
int[] temp=new int[data.length]; 0[PP Vr:  
mergeSort(data,temp,0,data.length-1); JYm@Llf)$  
} kt X(\Hf!  
'9<Mk-Aj  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^"6xE nA]  
int i, j, k; 'n!;7*  
int mid = (l + r) / 2; R*Pfc91}  
if (l == r) YIgzFt[L  
return; ] =>vv;L  
if ((mid - l) >= THRESHOLD) ;?zb (2  
mergeSort(data, temp, l, mid); ((EN&X,v  
else C"IPCJYn  
insertSort(data, l, mid - l + 1); 0~Yg={IKhK  
if ((r - mid) > THRESHOLD) bi KpV? Dp  
mergeSort(data, temp, mid + 1, r); I7BfA,mZ7  
else H0tjN&O_  
insertSort(data, mid + 1, r - mid); )u\"xxcV  
q$b/T+-ec  
for (i = l; i <= mid; i++) { HewVwD<C  
temp = data; Zn #ri 8S  
} <po(7XB  
for (j = 1; j <= r - mid; j++) { )]>=Uo  
temp[r - j + 1] = data[j + mid]; ]Z<{ ~  
} qhF/iUE  
int a = temp[l]; Om>6<3n  
int b = temp[r]; JWMIZ{/M  
for (i = l, j = r, k = l; k <= r; k++) { kwGj 7'  
if (a < b) { #MGZje,I  
data[k] = temp[i++]; 'cH),~ z  
a = temp; JguE#ob2  
} else { t4h05i  
data[k] = temp[j--]; JO+ hD4L  
b = temp[j]; b LL!iz?  
} ,@Ed)Zoh  
} x-y=Jor  
} qZ_^#%zO  
0lmoI4bW}s  
/** YfxZ<  
* @param data UvQxtT]  
* @param l 7OC ,KgJ3  
* @param i ;M"hX  
*/ ;EF s2-{K  
private void insertSort(int[] data, int start, int len) { TrkoLJmB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?>RJ8\Sj  
} wAkoX  
} =B<g_9d4  
} /wCP(1Mw  
} nfrC@Av  
C@]Z&H;  
堆排序: zq{L:.#ha  
p+9vSM #  
package org.rut.util.algorithm.support; J"6_H =s   
=x/]2+ s  
import org.rut.util.algorithm.SortUtil; Q*mPU=<  
[R A=M  
/** !i)?j@D  
* @author treeroot %0:  (''  
* @since 2006-2-2 NwT3e&u%|  
* @version 1.0 dVO|q9 /  
*/ tV# x{DN  
public class HeapSort implements SortUtil.Sort{ I!# 42~\  
<]CO}r   
/* (non-Javadoc) tQ?? nI2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oB_{xu$6|  
*/ Q6.},o  
public void sort(int[] data) {  U]e;=T:3  
MaxHeap h=new MaxHeap(); l6l)M  
h.init(data); *<Qn)Az  
for(int i=0;i h.remove(); =H!u4  
System.arraycopy(h.queue,1,data,0,data.length); LAMTf"a  
} }p8a'3@Z  
(U$ F) 7  
private static class MaxHeap{ =UTv  
p_P'2mf  
void init(int[] data){ m:p1O3[R  
this.queue=new int[data.length+1]; _h@e.BtDs  
for(int i=0;i queue[++size]=data; p@r~L(>+3  
fixUp(size); 8@b@y|#]X  
} n/^wzG  
} -I4@` V  
@BW~A@8  
private int size=0; xQaN\):^8  
@xO< ~  
private int[] queue; uiDR}   
47 m:z5;  
public int get() { g%9I+(?t  
return queue[1]; \n:'>:0X!  
} c1MALgK~}\  
RE *UIh*O  
public void remove() { 9O@ eJ$  
SortUtil.swap(queue,1,size--); 7z F29gC  
fixDown(1); q\mVZyj  
} K[T? --H  
file://fixdown Q !S"=2  
private void fixDown(int k) { )ALf!E%{  
int j; 8Jxo;Y  
while ((j = k << 1) <= size) { 'y;[ fwo7  
if (j < size %26amp;%26amp; queue[j] j++; /o8h1L=  
if (queue[k]>queue[j]) file://不用交换 7c+TS--  
break; ";s?#c  
SortUtil.swap(queue,j,k); <K4'|HU/  
k = j; zy+|)^E  
} 4HkOg)a  
} f&{2G2 O%  
private void fixUp(int k) { t55 '  
while (k > 1) { 0QEVL6gw  
int j = k >> 1; U.?,vw'aai  
if (queue[j]>queue[k]) /Pi{Mv eZM  
break; =AZ>2P  
SortUtil.swap(queue,j,k); 9{xP~0g  
k = j; |910xd`Z  
} u]"oGJj1  
} FS`{3d2K +  
{T m-X`  
} g4I(uEJk  
lh8`.sWk4V  
} mm:\a-8j  
Os?~U/  
SortUtil: 8BLtTpu  
"{L%5:H@  
package org.rut.util.algorithm; AP/5, M<  
yy/wSk  
import org.rut.util.algorithm.support.BubbleSort; &m+s5  
import org.rut.util.algorithm.support.HeapSort; s?E7tmaM  
import org.rut.util.algorithm.support.ImprovedMergeSort; !cp ,OrO\  
import org.rut.util.algorithm.support.ImprovedQuickSort; -b r/  
import org.rut.util.algorithm.support.InsertSort; e[w)U{|40  
import org.rut.util.algorithm.support.MergeSort; "E 8-76n  
import org.rut.util.algorithm.support.QuickSort; DghX(rs_  
import org.rut.util.algorithm.support.SelectionSort; rDUNA@r  
import org.rut.util.algorithm.support.ShellSort; <E$5LP;:  
'S@C,x%2,  
/** Qmzj1e$6x  
* @author treeroot >!`T=(u!  
* @since 2006-2-2 e)7[weGN  
* @version 1.0 ,C(")?4aJ  
*/ &``;1/J*W  
public class SortUtil { cKFzn+  
public final static int INSERT = 1; @ZD1HA,h"  
public final static int BUBBLE = 2; *vUKh^="  
public final static int SELECTION = 3; 0(:"q!h  
public final static int SHELL = 4; />K$_T/]  
public final static int QUICK = 5; f:Ju20D  
public final static int IMPROVED_QUICK = 6; F~{yqY5]n  
public final static int MERGE = 7; LnrR#fF]Z  
public final static int IMPROVED_MERGE = 8; xr)kHJ:v  
public final static int HEAP = 9; hp Lo  
3V LwMF?  
public static void sort(int[] data) { I)Lg=n$  
sort(data, IMPROVED_QUICK); e!G I<  
} i&{8a3B  
private static String[] name={ *sZOws<  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ok2k; +l  
}; WR gAc%  
,MuLu,$/  
private static Sort[] impl=new Sort[]{ kJHUaXM  
new InsertSort(), $*L@y m  
new BubbleSort(), Qighvei  
new SelectionSort(), m0XK?;\V  
new ShellSort(), B.Ic8'  
new QuickSort(), VX2bC(E'%  
new ImprovedQuickSort(), vr=iG xD  
new MergeSort(), 7GWPsaPn  
new ImprovedMergeSort(), IkL|bV3E0  
new HeapSort() 552c4h/T  
}; EJb"/oLla  
"A,]y E  
public static String toString(int algorithm){ tlI3jrgw  
return name[algorithm-1]; G5bi,^G7  
} qmtVk  
C&Ow*~  
public static void sort(int[] data, int algorithm) { [1 w  
impl[algorithm-1].sort(data); YeYFPi#  
} h*h+VM  
HQ ^> ~  
public static interface Sort { }4 P@`>e/`  
public void sort(int[] data); IEjKI"  
} n=L;(jp<j  
p\b:uy6#  
public static void swap(int[] data, int i, int j) { o @~XX@5l  
int temp = data; F+*: >@3  
data = data[j]; n]6xrsE  
data[j] = temp; <;phc~0+  
} <y(>z*T;  
} (#X/sZQh  
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