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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。 BFL`!^  
插入排序: <\NY<QIwFw  
n` xR5!de  
package org.rut.util.algorithm.support; ]|MEx{BG-  
=R#Qx,  
import org.rut.util.algorithm.SortUtil; x|mqL-Q f  
/** IB[)TZ2m  
* @author treeroot wQe_vY  
* @since 2006-2-2 R{ a"Y$  
* @version 1.0 vg3=8>#  
*/ U<CTubF  
public class InsertSort implements SortUtil.Sort{ `glBV`?^  
Z?%zgqTXb  
/* (non-Javadoc) Zrvz;p@~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cm?\ -[cV  
*/ _(h&7P9  
public void sort(int[] data) { Wn(6,MDUN  
int temp; c- }X_)U }  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9\/xOwR  
} S<4c r  
} p(~Yx3$*  
} _~piZmkG$  
o| #Qu8Lk  
} ;~"FLQg@  
qMLD)rL  
冒泡排序: gREzZ+([  
'=Rs/EDME  
package org.rut.util.algorithm.support; <4P4u*/o  
 #`o2Z  
import org.rut.util.algorithm.SortUtil; hnDBFQ{  
r7b1-  
/** a'2$nbp}  
* @author treeroot hRs&t,{&  
* @since 2006-2-2 Q aS\(_  
* @version 1.0 ^~3SSLS4"  
*/ !"\80LP  
public class BubbleSort implements SortUtil.Sort{ K#pNe c  
|NpP2|4h  
/* (non-Javadoc) yt.F\[1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BFo5\l:q8  
*/ Bs O+NP  
public void sort(int[] data) { Pmh8sw  
int temp; fpFhn  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cNM3I,o7  
if(data[j] SortUtil.swap(data,j,j-1); 1+}{8D_F  
} OoA|8!CFa  
} vTJ}8  
} hM{{\yZS  
} :TJv=T'p'  
Jo@|"cE=  
} R}q>O5O  
Z@]e{zO  
选择排序: rvnT6Ve  
@wE5S6! B\  
package org.rut.util.algorithm.support; Mf&{7%  
vTlwRG=5  
import org.rut.util.algorithm.SortUtil; m^GJuP LW  
 :}@g6   
/** F W/W%^  
* @author treeroot \}p6v}  
* @since 2006-2-2 /.Ww6a~  
* @version 1.0 <8d^^0  
*/ ?e,pN,4  
public class SelectionSort implements SortUtil.Sort { }j*KcB_  
a hR ^  
/* rL+!tH  
* (non-Javadoc) 5[* qi?w=  
* [^U#Qj)hL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %jJ>x3$F  
*/ 3b+d"`Y^S  
public void sort(int[] data) { J|w\@inQ  
int temp; P DrZY.-  
for (int i = 0; i < data.length; i++) { -3;*K4z$/  
int lowIndex = i; rzh#CnL3  
for (int j = data.length - 1; j > i; j--) { #m{UrTC  
if (data[j] < data[lowIndex]) { >i5acuth  
lowIndex = j; rmE"rf  
} ?sMP~RHQ  
} 8;Yx<woR  
SortUtil.swap(data,i,lowIndex); WC.t_"@  
} {a4z2"\A  
} ZE2$I^DY-  
S%yd5<%_  
} qL6 |6-?  
oE(7v7iY  
Shell排序: $aN&nhoO<  
Mi/&f   
package org.rut.util.algorithm.support; UmQ?rS8d  
7%JXVP}A  
import org.rut.util.algorithm.SortUtil; T%Z`:mf  
kQ|}"Tw7  
/** Z$2mVRS`c  
* @author treeroot cLamqZf3  
* @since 2006-2-2 vh T9#) HI  
* @version 1.0 _oR6^#5#  
*/ h4sEH  
public class ShellSort implements SortUtil.Sort{ (RGl, x:  
ZBB^?FF  
/* (non-Javadoc) wMT?p/9Blm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r}+U1l3#2  
*/ mflH&Bx9  
public void sort(int[] data) { rH8w||S2U  
for(int i=data.length/2;i>2;i/=2){ |l 03,dOF  
for(int j=0;j insertSort(data,j,i); 6NVf&;laQ  
} Bq#?g@V  
} [ft#zxCJ  
insertSort(data,0,1); SYOND>E  
} 5P ,{h  
YYzj:'  
/** `i<;5s!rX  
* @param data IX7<  
* @param j np}F [v  
* @param i DK}k||-  
*/ wyzj[PDS  
private void insertSort(int[] data, int start, int inc) { ):   
int temp; BQ2EDy=}6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2M3.xUS  
} vd c k  
} 0C#1/o)o  
} x00"d$!  
(30{:o&^  
} K, ae-#wgb  
+/*g?Vt  
快速排序: ?%J{1+hY  
I83ZN]  
package org.rut.util.algorithm.support; .Wv2aJq  
>wS52ng  
import org.rut.util.algorithm.SortUtil; *y9 iuJ}  
oj /:  
/** yd2v_  
* @author treeroot Q* ifmnB'  
* @since 2006-2-2 |kyxa2F{  
* @version 1.0 e; 5 n.+m  
*/ JhRXfIK>{  
public class QuickSort implements SortUtil.Sort{ TMj(y{2  
X3vTyIsn  
/* (non-Javadoc) *lRP ZN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jbcJ\2  
*/ 3/+9#  
public void sort(int[] data) { 8  !]$ljg  
quickSort(data,0,data.length-1); |FG t'  
} 8'Sw?FbVA/  
private void quickSort(int[] data,int i,int j){ KY9sa/xO  
int pivotIndex=(i+j)/2; *Nloa/a&9  
file://swap =G2D4>q  
SortUtil.swap(data,pivotIndex,j); ~gQ$etPd  
Kf2Ob 1  
int k=partition(data,i-1,j,data[j]); -&I%=0q  
SortUtil.swap(data,k,j);  m/gl7+  
if((k-i)>1) quickSort(data,i,k-1); +e+hIMur  
if((j-k)>1) quickSort(data,k+1,j); u;18s-NY  
?W-J2tgss{  
} ^=D=fX"8%  
/** ye=*m  
* @param data Vb*q^ v  
* @param i 9kss) xy  
* @param j ~n9BN'@x  
* @return KSU?Tg&JR  
*/ 9AK<<Mge.  
private int partition(int[] data, int l, int r,int pivot) { %m$TV@  
do{ zim]3%b*A;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v*`$is+  
SortUtil.swap(data,l,r); dmI,+hHtL  
} W8+Daw1Nr  
while(l SortUtil.swap(data,l,r); $o"S zy  
return l; 4^vEMq8lB  
} Se/VOzzg  
3on]#/"1b  
} H~UxVQLPp  
0PO'9#  
改进后的快速排序: fr kDf-P  
~&B{"d  
package org.rut.util.algorithm.support; &m2FEQLj  
m-9{@kgAM?  
import org.rut.util.algorithm.SortUtil; %>B?WR\yE  
>ly`1t1  
/** OEmz`JJ67  
* @author treeroot  Ht| No  
* @since 2006-2-2 vHSX3\(  
* @version 1.0 /T&z :st0  
*/ 5W_u|z+/g  
public class ImprovedQuickSort implements SortUtil.Sort { !i=LQUi.  
7.)e4  
private static int MAX_STACK_SIZE=4096; 7ukJ\P5[&1  
private static int THRESHOLD=10; I@IZ1 /J,r  
/* (non-Javadoc) A8 V7\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D# |+PG7  
*/ Lt>"R! "x  
public void sort(int[] data) { 6U[`CGL66  
int[] stack=new int[MAX_STACK_SIZE]; )jk X&7x  
`t_S uZ`V  
int top=-1; @b[{.m U  
int pivot; EfHo1Yn&  
int pivotIndex,l,r; }pOL[$L  
&5>R>rnB  
stack[++top]=0; <>JN&#3?  
stack[++top]=data.length-1; 6d/;GyG  
'L|& qy@  
while(top>0){ [iVCorU  
int j=stack[top--]; 7x` dEi<  
int i=stack[top--]; OI0#@_L&  
xG:eS:iT  
pivotIndex=(i+j)/2; ~/Gx~P]  
pivot=data[pivotIndex]; R~OameRR  
LV|ZZ.d h  
SortUtil.swap(data,pivotIndex,j); G|eY$5!i  
H]&a}WQ_  
file://partition K%AbM#o<  
l=i-1; "F A&Qm0  
r=j; JGQlx-qv  
do{ #'5|$ug[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zAT7 ^q^  
SortUtil.swap(data,l,r); a@( 4X/|  
} rg Gm[SL*<  
while(l SortUtil.swap(data,l,r); {A2EGUmF2  
SortUtil.swap(data,l,j); 7)&}riQ  
.B 2?%2S  
if((l-i)>THRESHOLD){ /d;C)%$  
stack[++top]=i; ]7<}EG  
stack[++top]=l-1; 8m% +O#  
} X(s HFVU+  
if((j-l)>THRESHOLD){ V1 y"  
stack[++top]=l+1; B*=m%NXf  
stack[++top]=j; W/03L, 1  
} ?,G CR1|4  
&o{=  
} pxm{?eBz  
file://new InsertSort().sort(data); cp D=9k!*K  
insertSort(data); -L%J,f[&,  
} &'%b1CbE  
/** ee7#PE]}  
* @param data Axb,{X[6g  
*/ Py^ _::  
private void insertSort(int[] data) { <}e2\x  
int temp; Ik{[BRzUgt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h SGI  
} b4TZnO  
} >K]s)VuWR  
} g`C"t3~%S  
@MFEBc}  
} #K$0%0=M  
"R-j  
归并排序: =w8 0y'  
BILZ XMf  
package org.rut.util.algorithm.support; 'Z,7{U1P  
w 8cnSO  
import org.rut.util.algorithm.SortUtil; ,1!Y!,xy  
F.(e}EMyNh  
/** e.(d?/!F_  
* @author treeroot Dp#27Yzc  
* @since 2006-2-2 M&",7CPD(1  
* @version 1.0 Ln+ k_  
*/ ?}W#j  
public class MergeSort implements SortUtil.Sort{ @n9iOf~<  
MIZ!+[At  
/* (non-Javadoc) ,,IK}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?v F8 y;Jh  
*/ DAtAc(05)  
public void sort(int[] data) { ,O^kZ}b  
int[] temp=new int[data.length]; G%i&C)jZ  
mergeSort(data,temp,0,data.length-1); c$u#U~~  
} ~j!|(a7  
h]|2b0  
private void mergeSort(int[] data,int[] temp,int l,int r){ ygQAA!&']  
int mid=(l+r)/2; eISHV.QV  
if(l==r) return ; l#w0-n%S  
mergeSort(data,temp,l,mid); g&ba]?[A  
mergeSort(data,temp,mid+1,r); JE$ $6X  
for(int i=l;i<=r;i++){ f_hG2Sk  
temp=data; #0#6eT{-  
} lfw BUb  
int i1=l; eR3MU]zF  
int i2=mid+1; `@:k*d  
for(int cur=l;cur<=r;cur++){ Q2@yUDd!  
if(i1==mid+1) [E}pU8.t6  
data[cur]=temp[i2++]; I;P!   
else if(i2>r) (t,|FkVLV  
data[cur]=temp[i1++]; dGR #l)  
else if(temp[i1] data[cur]=temp[i1++]; A  j>  
else @Hp=xC9V  
data[cur]=temp[i2++]; j2n 4; m  
} B|;?#okx  
} 4%TmW/yd  
;b, bHL  
} 'sI @e s  
L@LT*M  
改进后的归并排序: V]A*' ke/  
}q[IhjD%  
package org.rut.util.algorithm.support; o^& nkR  
-Mufo.Jz1o  
import org.rut.util.algorithm.SortUtil; HpTX6}^  
nM&UdKf3  
/** 6I$:mHEhd  
* @author treeroot GF awmNZ  
* @since 2006-2-2 A LnE[}N6,  
* @version 1.0 ;CdxKr- d  
*/ \jThbCb  
public class ImprovedMergeSort implements SortUtil.Sort { BvV!?DY4  
RiM!LX  
private static final int THRESHOLD = 10; 3k?|-js  
@)p?!3{"  
/* 8 n)3'ok  
* (non-Javadoc) cvl1 X"  
* /2e,,)4g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LuW^Ga"E  
*/ ?>o|H-R~5Z  
public void sort(int[] data) { rA#Ji~  
int[] temp=new int[data.length]; K_E- Hgg_  
mergeSort(data,temp,0,data.length-1); Z:s:NvFX  
} #R$[?fW  
x$\w^h\F  
private void mergeSort(int[] data, int[] temp, int l, int r) { _q dLA  
int i, j, k; :*{\oqFn~$  
int mid = (l + r) / 2; &C7HG^;W9  
if (l == r) y1 53ax  
return; A4^+p0@  
if ((mid - l) >= THRESHOLD) v3NaX.  
mergeSort(data, temp, l, mid); j{PX ~/  
else o?3R HP47  
insertSort(data, l, mid - l + 1); g[$B9 0  
if ((r - mid) > THRESHOLD) `#]\Wnp~y  
mergeSort(data, temp, mid + 1, r); t&xx-4  
else @K/I a!Lw  
insertSort(data, mid + 1, r - mid); 40<&0nn  
3%} Ma,  
for (i = l; i <= mid; i++) { \x!>5Z Y  
temp = data; ,jn?s^X6Dj  
} 1mX*0>  
for (j = 1; j <= r - mid; j++) { DHAWUS6  
temp[r - j + 1] = data[j + mid]; W)#`4a^xj7  
} qkIU>b,B  
int a = temp[l]; u!i5Q  
int b = temp[r]; nqBu C  
for (i = l, j = r, k = l; k <= r; k++) { (Ka# 6   
if (a < b) { e-VL U;  
data[k] = temp[i++]; +6=!ve}  
a = temp; ^6+x0[13  
} else { .bE,Q9:  
data[k] = temp[j--]; .*j+?  
b = temp[j]; F MVmH!E  
} H[D/Sz5`  
} a%dx\&K  
} `9ox?|iJ  
L,6Y=?  
/** | 6>_L6t  
* @param data o$O,#^  
* @param l `y`xk<q  
* @param i `y}d)"!  
*/ jO 55<s94  
private void insertSort(int[] data, int start, int len) { W(aRO  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); RY{tX`  
} MxRU6+a  
} q3F5\6aN  
} MbfzGYA2~  
} H#inr^Xa  
spJ(1F{|V  
堆排序: vgj^-  
0Mg8{  
package org.rut.util.algorithm.support; j;)g+9`  
^{:jY, ?]  
import org.rut.util.algorithm.SortUtil; F-^HN%  
%7msAvbk  
/** 0>iFXw:fn  
* @author treeroot &._!)al  
* @since 2006-2-2 }&DB5M  
* @version 1.0 %v[ Kk-d  
*/ {ah=i8$  
public class HeapSort implements SortUtil.Sort{ n#Roz5/U  
Nb~dw;t  
/* (non-Javadoc) #[y<h3f]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5vf t}f  
*/ jJZsBOW[8  
public void sort(int[] data) { m>ycN  
MaxHeap h=new MaxHeap(); N@6OQ:,[F  
h.init(data); oDP((I2-  
for(int i=0;i h.remove(); m > (h_j  
System.arraycopy(h.queue,1,data,0,data.length); ^,lZ58 2  
} _-]!;0E IV  
z,FTsR$x  
private static class MaxHeap{ q 9S z7_K  
hF"g 91P  
void init(int[] data){ y?n2`l7f  
this.queue=new int[data.length+1]; lt6;*z[  
for(int i=0;i queue[++size]=data; [fi'=Cb  
fixUp(size); QaWHz   
} -I-Uh{)j  
} ,6;xr'[o*  
1/ pA/UVO  
private int size=0; pXh~#o6 V  
99 "[b  
private int[] queue; 3;MjO*-  
P%sO(_PuT  
public int get() { rLh9`0|D  
return queue[1]; eQFb$C]R}y  
} /;&+ < }  
ggI=I<7M  
public void remove() { ^2^|AXNES  
SortUtil.swap(queue,1,size--); ,p!B"# ot  
fixDown(1); a4( ?]ND~6  
} x8?x/xE  
file://fixdown "6N~2q,SW  
private void fixDown(int k) { eh:}X}c=J]  
int j; r1oku0o  
while ((j = k << 1) <= size) { ?96-" l  
if (j < size %26amp;%26amp; queue[j] j++; dA1 C)gLi  
if (queue[k]>queue[j]) file://不用交换 U2V^T'Y[  
break; pAil]f6  
SortUtil.swap(queue,j,k); P$18Xno{  
k = j; |Vwc/9`t]>  
} ZP6x  
} 5U{4TeUH  
private void fixUp(int k) { wfDp,T3w7  
while (k > 1) { 'sRg4?PT  
int j = k >> 1; "65||[=8  
if (queue[j]>queue[k]) mT6q}``vtG  
break; :YqQlr\  
SortUtil.swap(queue,j,k); >AQ) x  
k = j; Qq T/1^imS  
} x^)g'16`  
} [O7w =  
2"leUur~rO  
} f4'El2>-86  
_k_>aG23  
} K[uY+!'1  
4YDT%_h0  
SortUtil: "mPSA Z  
V)0[`zJ  
package org.rut.util.algorithm; 9DOkQnnc  
Cs:+93w  
import org.rut.util.algorithm.support.BubbleSort; D[89*@v  
import org.rut.util.algorithm.support.HeapSort; E3S%s  
import org.rut.util.algorithm.support.ImprovedMergeSort; _BG8/"h32  
import org.rut.util.algorithm.support.ImprovedQuickSort; [x!i* rW3  
import org.rut.util.algorithm.support.InsertSort; Z}8k[*.  
import org.rut.util.algorithm.support.MergeSort; . [T'yc:=  
import org.rut.util.algorithm.support.QuickSort; ?}'N_n ys  
import org.rut.util.algorithm.support.SelectionSort; q.=^i z&m  
import org.rut.util.algorithm.support.ShellSort; I %|@3=Yc  
`FA) om  
/** (9mbF%b  
* @author treeroot fav5e'[$  
* @since 2006-2-2 J| SwQE~  
* @version 1.0 3ty4D2y  
*/ {TyCj?3B  
public class SortUtil { )v%l0_z{  
public final static int INSERT = 1; w4\BD&7V  
public final static int BUBBLE = 2; gtD   
public final static int SELECTION = 3; N'I(P9@  
public final static int SHELL = 4; X*pZNz&E  
public final static int QUICK = 5; zlH28V  
public final static int IMPROVED_QUICK = 6; 3A-*vaySV  
public final static int MERGE = 7; Q  |  
public final static int IMPROVED_MERGE = 8; [6AHaOhR'  
public final static int HEAP = 9; _ XE;-weE  
-=>sTMWpr  
public static void sort(int[] data) { C<_ Urnmn  
sort(data, IMPROVED_QUICK); -i#J[>=w{C  
} ?4^} ;wDb2  
private static String[] name={ L e*`r2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xEjx]w/&  
}; ~gP7s_ qr{  
:^ n*V6.4  
private static Sort[] impl=new Sort[]{ 6`acg'sk>  
new InsertSort(), K[kds`  
new BubbleSort(), jz*0`9&_  
new SelectionSort(), {$;2 HbM(  
new ShellSort(), p"2m90IO  
new QuickSort(), _=pWG^a  
new ImprovedQuickSort(), >w9sE8i  
new MergeSort(), 4Rx~s7l  
new ImprovedMergeSort(), 6 jmrD  
new HeapSort() $]C=qM28-  
}; {@3z\wMK$  
I?B,sl_w  
public static String toString(int algorithm){ )i;un.  
return name[algorithm-1]; @K\o4\  
} d PsLZ"I  
Xx_tpC?  
public static void sort(int[] data, int algorithm) { n+2%tW  
impl[algorithm-1].sort(data); yNBv-oe5  
} 3A_G=WaED  
S<"oUdkz  
public static interface Sort { HmMO*k<6@  
public void sort(int[] data); *Ddi(`  
} :5J_5,?;`  
h h"h j  
public static void swap(int[] data, int i, int j) { /'ZKST4  
int temp = data; 8] `Ru5nd  
data = data[j]; zEj#arSE4  
data[j] = temp; lbTV$A  
} c;9.KCpwx  
} -jB3L:  
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