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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。 &9e  
插入排序: %`C e#b()'  
jFQy[k-B  
package org.rut.util.algorithm.support; !'$*Z(  
)<x9t@$  
import org.rut.util.algorithm.SortUtil; M"z=114  
/** >N^<Q4%2  
* @author treeroot @]Q4K%1^"  
* @since 2006-2-2 VwR\"8r3  
* @version 1.0 !}=eXDn;A_  
*/ XT^=v6^H  
public class InsertSort implements SortUtil.Sort{ IADSWzQ@  
-jjB2xP  
/* (non-Javadoc) 8:Hh;nl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5OdsT-y  
*/ i4YskhT  
public void sort(int[] data) { h7]+#U]mi  
int temp; 49"C'n0wST  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~}OaX+!  
} W6?=9].gc  
} |gkNhxzB  
} <:-4GJH=  
zC*FeqFL<  
} 7FwtBO  
".jO2GO^  
冒泡排序: [n9l[dN  
lBP?7`U  
package org.rut.util.algorithm.support; %DuPM6 6r  
L,zx\cj?z  
import org.rut.util.algorithm.SortUtil; or-k~1D  
a"s2N%{  
/** 091m$~r*  
* @author treeroot 5bb#{?2i  
* @since 2006-2-2 oyVT  
* @version 1.0 jTwSyW  
*/ <MEm+8e/s6  
public class BubbleSort implements SortUtil.Sort{ P$'PB*5d|  
TTG=7x:3  
/* (non-Javadoc) CC^D4]ug  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _JC*4  
*/ %)V=)l.j  
public void sort(int[] data) { 7sVM[lr<  
int temp; yBK$2to~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ WrP+n  
if(data[j] SortUtil.swap(data,j,j-1); Rd8mn'A  
} z ,;XWv?  
} hw"2'{"II  
} /5 z+N(RFC  
} bfeTf66c  
,u@:(G  
} Lginps[la  
.*NPoW4Kv  
选择排序: tDETRjTA  
&pK0>2  
package org.rut.util.algorithm.support; &zYQ H@  
+1#;s!e  
import org.rut.util.algorithm.SortUtil; k3&68+  
A8ViJ  
/** ]Mq-67  
* @author treeroot ) `{jPK*`  
* @since 2006-2-2 dpz@T>MS=  
* @version 1.0 ?z&n I#  
*/ ,{IDf  
public class SelectionSort implements SortUtil.Sort { `U0XvWPr[  
Pjq'c+4.yL  
/* 9ad`q+kY  
* (non-Javadoc) xkf2;  
* *L?~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cvw17j  
*/ &NF$_*\E  
public void sort(int[] data) { aVr(*s;/  
int temp; '(iPI  
for (int i = 0; i < data.length; i++) { %nJo:/  
int lowIndex = i; dr#%~I  
for (int j = data.length - 1; j > i; j--) { T=NLBJ  
if (data[j] < data[lowIndex]) { g)f& mQ)  
lowIndex = j; }#g]qK  
} /y1+aTiJ  
} <uU<qO;6  
SortUtil.swap(data,i,lowIndex); @n qM#  
} [<r.M<3  
} b4:{PD~Mh  
1.%|Er 4  
} ]U@~vA#''  
q1 HJ_y  
Shell排序: KrP?*yk  
'Rnzu0<lF  
package org.rut.util.algorithm.support; #^9bBF/  
NJJ=ch  
import org.rut.util.algorithm.SortUtil; %,$xmoj9O]  
m|JA }&A  
/** @GXKqi  
* @author treeroot 3LyNi$`f  
* @since 2006-2-2 t=eI*M+>h  
* @version 1.0 UZsvYy?  
*/ N_Ezp68Fp  
public class ShellSort implements SortUtil.Sort{ `JV(ae0  
FzOWM7+\  
/* (non-Javadoc) pdFO!A_t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z3 ^_C`(F  
*/ 'aV'Am+:  
public void sort(int[] data) { -B/'ArOo]  
for(int i=data.length/2;i>2;i/=2){ S W6oaa81  
for(int j=0;j insertSort(data,j,i); K0oF=|  
} x R$T/]/  
} f`;w@gR`=  
insertSort(data,0,1); bbjEQby  
} X}]A_G  
OqRRf  
/** ]zAwKuIK  
* @param data u{HO6 s\S  
* @param j yK&  
* @param i Ad,n+%"e  
*/ H)S!%(x4  
private void insertSort(int[] data, int start, int inc) { B#IUSHC  
int temp; &RbP N^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); yFeFI@Hp 3  
} 7vRp<  
} a-S tOO5s  
} y'b*Dk{  
R|$b\3  
} iO Z#}"  
i?b9zn  
快速排序: b{aB^a:f=L  
9MO=f^f-  
package org.rut.util.algorithm.support; 21Dc.t{  
< @GO]vY  
import org.rut.util.algorithm.SortUtil; 2?6]Xbs{  
xR kw+  
/** x'\C'zeF  
* @author treeroot g yV>k=B  
* @since 2006-2-2 'wYIJK~1  
* @version 1.0 /TPtPq<7:#  
*/ N.q*jY= X|  
public class QuickSort implements SortUtil.Sort{ k18v{)i~  
JF~9efWe>  
/* (non-Javadoc) 6jBi?>[I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =NY55t.  
*/ hi$AZ+  
public void sort(int[] data) { ^>ir&$  
quickSort(data,0,data.length-1); ia_@fQ  
} ,W[J@4.  
private void quickSort(int[] data,int i,int j){ ?B e}{Qqlg  
int pivotIndex=(i+j)/2; aaKf4}  
file://swap 7q;`~tbC  
SortUtil.swap(data,pivotIndex,j); m44a HBwId  
^$% Sg//  
int k=partition(data,i-1,j,data[j]); (y6}xOa(  
SortUtil.swap(data,k,j); :Cx|(+T  
if((k-i)>1) quickSort(data,i,k-1); }@t" B9D  
if((j-k)>1) quickSort(data,k+1,j); VoUo!t:(+  
k]$oir  
} P%Vq#5  
/** OE0G*`m  
* @param data '@@!lV  
* @param i $+n6V2^K)7  
* @param j `) cH(Rj  
* @return iSoQ1#MP)2  
*/ XKws_  
private int partition(int[] data, int l, int r,int pivot) { vOz1& |;D  
do{ -8FUR~WJ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Nb9GrYIS  
SortUtil.swap(data,l,r); >"=DN5w ,S  
} R3a}YwJFXF  
while(l SortUtil.swap(data,l,r); ^Y+C!I  
return l; *{+{h;p  
} #O;JV}y  
rq!*unJ  
} (&Lt&i _  
! #! MTk  
改进后的快速排序: 6YNL4HE?  
qF `6l(  
package org.rut.util.algorithm.support; =z"+)N  
jZkc yx  
import org.rut.util.algorithm.SortUtil; ti%RE:*  
%aw.o*@:  
/** gELG/6l  
* @author treeroot `?N0?;  
* @since 2006-2-2 ^Z;zA@[wt  
* @version 1.0 \ B84  
*/ QM 3DB  
public class ImprovedQuickSort implements SortUtil.Sort { z#o''  
Y2 J-`o$5  
private static int MAX_STACK_SIZE=4096; m#8[")a$"  
private static int THRESHOLD=10; vaP`'  
/* (non-Javadoc) MA:5'n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /; Bmh=  
*/ 9-{=m+|b  
public void sort(int[] data) { o.fqJfpj  
int[] stack=new int[MAX_STACK_SIZE]; m Rw0R{  
~I+MuI[  
int top=-1; (oX!D(OI  
int pivot; =(7nl#o  
int pivotIndex,l,r; njX$?V   
r)}U 'iv*%  
stack[++top]=0; aif;h! ?y  
stack[++top]=data.length-1; /A-WI x  
: (X3?%  
while(top>0){ "EMW'>&m  
int j=stack[top--]; -c0ypz  
int i=stack[top--]; 7>j~;p{  
5a_8`csu  
pivotIndex=(i+j)/2; PgK7CG7G  
pivot=data[pivotIndex]; ]r|oNGD)G  
:[_ms d  
SortUtil.swap(data,pivotIndex,j); 1 rhZlmf[r  
"t.` /4R2w  
file://partition q {Z#}|km#  
l=i-1; < z2wt  
r=j; A)C)5W  
do{ @lE'D":?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); / }$n_N\!)  
SortUtil.swap(data,l,r); |0=UZK7%O  
} +K'Hr: (  
while(l SortUtil.swap(data,l,r); ZzupK^5Z  
SortUtil.swap(data,l,j); ySmbX  
.nrllVG%`  
if((l-i)>THRESHOLD){ v}Ju2}IK  
stack[++top]=i; rjK`t_(=  
stack[++top]=l-1; @0@ZlH wM  
} sg^|dS{3D  
if((j-l)>THRESHOLD){ w(6n  
stack[++top]=l+1; <8^x Mjc  
stack[++top]=j; k[ro[E  
} ,.W7Z~z  
.M^[/!  
} tWIJ,_8l  
file://new InsertSort().sort(data); yzhNl' Rz  
insertSort(data); =zyA~}M2  
} BtC*]WB"_'  
/** 'q)g, 2B%  
* @param data /gZyl|kdy  
*/ vNv!fkl  
private void insertSort(int[] data) { !&rd#ZBn  
int temp; =,(TP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MY@&^71i4  
} G*@!M%/  
} _2!8,MX  
} VWE>w|'  
Y/FPkH4  
} h0rPMd(K  
8 XB[CbO  
归并排序: ^'V :T Y  
rKrHd  
package org.rut.util.algorithm.support; ~_D.&-xUF  
9aJIq{`E  
import org.rut.util.algorithm.SortUtil; VIT|#  
LWF,w7v[L  
/** r\;fyeH  
* @author treeroot :D)(3U5  
* @since 2006-2-2 gQ>kDl^$Ls  
* @version 1.0 HYfGu1j?X  
*/ {p84fR1P  
public class MergeSort implements SortUtil.Sort{ t R|dnC4U  
a]T:wUYG'  
/* (non-Javadoc) lhGJ/By- -  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v4n< G-  
*/ I x%>aee  
public void sort(int[] data) { kUf i  
int[] temp=new int[data.length]; (aa2uctTn  
mergeSort(data,temp,0,data.length-1); {rUg,y{v  
} eluN~T:W  
9 %T??-  
private void mergeSort(int[] data,int[] temp,int l,int r){ "=djo+y  
int mid=(l+r)/2; 5G f@n/M"  
if(l==r) return ; Jay"  
mergeSort(data,temp,l,mid);  yfZNL?2x  
mergeSort(data,temp,mid+1,r); "o&8\KSs  
for(int i=l;i<=r;i++){ cs+3&T: ,*  
temp=data; eThaH0  
} $eYL|?P50h  
int i1=l; KC6Cg?y^  
int i2=mid+1; 1 ~zjsi  
for(int cur=l;cur<=r;cur++){ lT|Gkm<G  
if(i1==mid+1) ITn%  
data[cur]=temp[i2++]; K oJ=0jM#  
else if(i2>r) ec&/a2M  
data[cur]=temp[i1++]; $a M5jH<  
else if(temp[i1] data[cur]=temp[i1++]; f4"UI-8;n  
else ]4l2jY  
data[cur]=temp[i2++]; UTD_rQ  
} <q'l7 S  
} {%R^8  
*q=T1JY  
} GJeG7xtJKl  
y|5L%,i  
改进后的归并排序: I=y7$+7%  
r/j:A#6M]o  
package org.rut.util.algorithm.support; bv[#|^/  
9n& &`r  
import org.rut.util.algorithm.SortUtil; ?b;2 PH"  
$Nu{c;7"  
/** }/cReX,so  
* @author treeroot h'y%TOob  
* @since 2006-2-2 X-c|jn7  
* @version 1.0  w4U,7%V  
*/ y{%0[x*N<m  
public class ImprovedMergeSort implements SortUtil.Sort { s#9q3JV0  
4S<M9A}  
private static final int THRESHOLD = 10; 7~Y\qJ4b  
MCKN.f%lP  
/* g#J` 7n  
* (non-Javadoc) PI9,*rOy  
* UMoj9/-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YB38K(  
*/ TN(Vzs%  
public void sort(int[] data) { $UR:j8C{p$  
int[] temp=new int[data.length]; ^_WR) F'K  
mergeSort(data,temp,0,data.length-1);  LR97FG  
} EeW ,-I  
h  d3  
private void mergeSort(int[] data, int[] temp, int l, int r) { vK',!1]y  
int i, j, k; H;/do-W[  
int mid = (l + r) / 2; Mog >W&U  
if (l == r) [,o:nry'a  
return; ,Z q:na  
if ((mid - l) >= THRESHOLD) R}nvSerVb  
mergeSort(data, temp, l, mid); 0*gvHVd/l  
else r9[S%Def  
insertSort(data, l, mid - l + 1); Z`Y&cKsn  
if ((r - mid) > THRESHOLD) ,md_eGF  
mergeSort(data, temp, mid + 1, r); !HY^QK  
else YuK+ N  
insertSort(data, mid + 1, r - mid); [G<ga80  
yw^Pok5.  
for (i = l; i <= mid; i++) { n1sYD6u<&  
temp = data; 3l{V:x!9@  
} ${f<}  
for (j = 1; j <= r - mid; j++) { d^C@5Pd <  
temp[r - j + 1] = data[j + mid]; [wGj?M}  
} %K6veB{M  
int a = temp[l]; c1#0o) q*7  
int b = temp[r]; Xw?DN*`L  
for (i = l, j = r, k = l; k <= r; k++) { &dyQ6i$],  
if (a < b) { lL D#|T3  
data[k] = temp[i++]; \V? .^/  
a = temp; xl&@g)Jj  
} else { EXDDUqZ5\  
data[k] = temp[j--]; L&pR#  
b = temp[j]; CX|W$b)%  
} 1oQw)X  
} /<rvaR  
} {wqT$( (<  
bb6x} jR  
/** (GJtTp~2C4  
* @param data _Mw3>GNl  
* @param l D2$ 9$xeR  
* @param i UB$}`39@  
*/ j-<-!jTd  
private void insertSort(int[] data, int start, int len) { O_FB^BB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Nk'<*;e  
} 4MgN  
} 5vx 4F f  
} msl.{  
} W A/dt2D|  
A@A8xn%  
堆排序: ;uBGB h<  
w1/QnV  
package org.rut.util.algorithm.support; oD2:19M@p  
_{[6hf4p  
import org.rut.util.algorithm.SortUtil;  6}"%>9  
)+_Vx}O:}  
/** ?P kJG ,~  
* @author treeroot wC1pfXa  
* @since 2006-2-2 _*mn4n=  
* @version 1.0 P5Xp #pa  
*/ $qNF /rF  
public class HeapSort implements SortUtil.Sort{ IiPX`V>RC  
[\8rh^LFi  
/* (non-Javadoc) VGS%U8;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L!}!k N:?  
*/ <ToS&  
public void sort(int[] data) { B/a gW  
MaxHeap h=new MaxHeap(); 6.@.k  
h.init(data); m{IlRf'  
for(int i=0;i h.remove(); zMSwU]4I!  
System.arraycopy(h.queue,1,data,0,data.length); R{g= N%O  
} ;K<VT\  
wm5&5F4:  
private static class MaxHeap{ I}`pY3  
)N.3Q1g-  
void init(int[] data){ 0L}`fYf  
this.queue=new int[data.length+1]; TU|#Pz7n-Z  
for(int i=0;i queue[++size]=data; 2F4<3k! &  
fixUp(size); f_c\uN@f  
} o,7|=.-b  
} T?8BAxC?K  
_XZ Gj:V  
private int size=0; f"Sp.'@  
0#V"   
private int[] queue; be+-p  
T`# nn|  
public int get() { yYz{*hq  
return queue[1]; |` T7}U  
} -.D?Z8e  
v=k+MvX  
public void remove() { i}m'#b  
SortUtil.swap(queue,1,size--); " MnWd BS  
fixDown(1); Ed=/w6<  
} +hRy{Ps/  
file://fixdown ;\pr05  
private void fixDown(int k) { 8m+~HSIR  
int j; +SFFwjI  
while ((j = k << 1) <= size) { F_@B ` ,  
if (j < size %26amp;%26amp; queue[j] j++; e{x>u(  
if (queue[k]>queue[j]) file://不用交换 b|i4me@  
break; ~XR ('}5D  
SortUtil.swap(queue,j,k); |lNp0b  
k = j; |4+'YgO  
} Ag8/%a~(  
}  Xu-~j!  
private void fixUp(int k) { 8m0*89HEu  
while (k > 1) { j2G^sj"|  
int j = k >> 1; ]]|#+$ ~  
if (queue[j]>queue[k]) SdnnXEB7  
break; )Jt. Z^J<  
SortUtil.swap(queue,j,k); mm>l:M TF  
k = j; GCl *x:  
} Q>5f@aN  
} AXbb-GK  
tddwnpnSw  
} Z_ GGH2u  
pA8bFtt  
} CR [>5/:M  
sc*R:"  
SortUtil: rWr'+v?  
h,\{s_b  
package org.rut.util.algorithm; -r *|N.5c  
[8'?G5/n  
import org.rut.util.algorithm.support.BubbleSort; onu G  
import org.rut.util.algorithm.support.HeapSort; d/  Lz"  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5( <O?#P  
import org.rut.util.algorithm.support.ImprovedQuickSort; {IOc'W-C#2  
import org.rut.util.algorithm.support.InsertSort; -nGcm"'6F  
import org.rut.util.algorithm.support.MergeSort; =-^A;AO(  
import org.rut.util.algorithm.support.QuickSort; > TYDkEs0  
import org.rut.util.algorithm.support.SelectionSort; Noj*K6  
import org.rut.util.algorithm.support.ShellSort; nmpc<&<<  
7rD 8  
/** #M!u';bZ  
* @author treeroot z}-CU GS  
* @since 2006-2-2 gdIk%m4  
* @version 1.0 /Xi21W/  
*/ 3P!OP{`  
public class SortUtil { Bw;isMx7  
public final static int INSERT = 1; 2S7 BzZ/  
public final static int BUBBLE = 2; x<I[?GT=  
public final static int SELECTION = 3; 3$"V,_TBZ  
public final static int SHELL = 4; G$,s.MSf  
public final static int QUICK = 5; ZV{C9S&  
public final static int IMPROVED_QUICK = 6; C]b:#S${  
public final static int MERGE = 7; l2;$qNAo  
public final static int IMPROVED_MERGE = 8; b@J"b(  
public final static int HEAP = 9; ((gI OTV  
T.cTL.}  
public static void sort(int[] data) { )2c]Z|  
sort(data, IMPROVED_QUICK); /)[-5n{  
} Z"c-Ly{vEj  
private static String[] name={ P[fy  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |mMsU,*gB  
}; R+.4|1p  
4L>8RiiQE;  
private static Sort[] impl=new Sort[]{ }"+"nf5h  
new InsertSort(), e/hCYoS1n  
new BubbleSort(), yr'-;-u  
new SelectionSort(), Xc[ym  
new ShellSort(), IhzY7U)}T  
new QuickSort(), ou0TKE9 _  
new ImprovedQuickSort(), OcUj_Zd  
new MergeSort(), T^!Q(`*  
new ImprovedMergeSort(), SE*;6&yL  
new HeapSort() cq>J]35  
}; y)KIz  
u.q3~~[=  
public static String toString(int algorithm){ }h`z2%5o  
return name[algorithm-1]; %3dc_YPS  
} $-/-%=  
c) Eu(j\#  
public static void sort(int[] data, int algorithm) { 8(j]=n6 r  
impl[algorithm-1].sort(data); :.=:N%3[  
} y9mV6.r  
@~vg=(ic(  
public static interface Sort { R:n|1]*f3X  
public void sort(int[] data); yl?LXc[)  
} Q=! lbW  
> 3x^jh  
public static void swap(int[] data, int i, int j) { $cn8]*Z =  
int temp = data; d7BpmM  
data = data[j]; O-[YU%K3?  
data[j] = temp; F3V:B.C  
}  }c||$  
} N5)H(<}  
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