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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。 ;8uHRcdQ  
插入排序: oo\IS\  
r;$r=Ufr  
package org.rut.util.algorithm.support; +2El  
N|o> %)R  
import org.rut.util.algorithm.SortUtil; 1Lc8fP$  
/** 2zM-Ob<U`  
* @author treeroot vv!Bo~L1,  
* @since 2006-2-2 shD+eHo$  
* @version 1.0 yj'Cy8  
*/ i"< ZVw  
public class InsertSort implements SortUtil.Sort{ lqauk)(A0  
=^#0.  
/* (non-Javadoc) 0xLkyt0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y1|^>C#a  
*/ URk$}_39  
public void sort(int[] data) { 2G H)iUmc  
int temp; o;E (Kj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mcCB7<. e  
} ? S8$5gA  
} @f\ X4!e*y  
} L-j/R1fTvl  
}tu4z+T2  
} =?^-P{:\?  
\Ec X!aC  
冒泡排序: ` 4OMZMq  
\6U 2-m'  
package org.rut.util.algorithm.support; ?l(nM+[kSL  
xiEcEz'lk  
import org.rut.util.algorithm.SortUtil; nM=2"`@$  
LMt0'Ml9  
/** C"(_mW{@  
* @author treeroot p1C_`f N,  
* @since 2006-2-2 DZ,<Jmg&e*  
* @version 1.0 mSy|&(l  
*/ n<=y"*  
public class BubbleSort implements SortUtil.Sort{ dP?nP(l  
.[#xQ=9`  
/* (non-Javadoc) { 576+:*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i[mC3ghM6,  
*/ /@6E3lh S  
public void sort(int[] data) { t$tsWAmiA[  
int temp; xAeZ7.Q&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ suzFcLxo  
if(data[j] SortUtil.swap(data,j,j-1); {_rZRyr  
} jQO* oq}  
} K3j_C` Se  
} NJ.rv  
} "0!~g/X`rK  
7ZL,p:f  
} +Kxe ymwr2  
<Sz>ZIISd  
选择排序: ?a*fy}A|  
7YoofI  
package org.rut.util.algorithm.support; h<+PP]l=  
=PI^X\if88  
import org.rut.util.algorithm.SortUtil; B?$S~5  }  
&19l k   
/** ?ykVfO'  
* @author treeroot 0*/mc96  
* @since 2006-2-2 5cPSv?x^F@  
* @version 1.0 VaOpO8y`  
*/ iK$Vd+Lgc  
public class SelectionSort implements SortUtil.Sort { d;;>4}XJ]  
aS c#&{  
/* n$XMsl.>  
* (non-Javadoc) 7}.#Z  
* @m*&c*r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e-L5=B  
*/ QC$=Fs5+  
public void sort(int[] data) { x.jYip  
int temp; "`gfy  
for (int i = 0; i < data.length; i++) { ,-w-su=J_  
int lowIndex = i; )^*9oqQ  
for (int j = data.length - 1; j > i; j--) { [Q2S3szbt6  
if (data[j] < data[lowIndex]) { <Tj"GVZAEO  
lowIndex = j; u5  [1Z|O  
} V+4k!  
} z*??YUT\M  
SortUtil.swap(data,i,lowIndex); WLg6-@kxXs  
} _ Yb Eo+  
} g=8|z#S  
*7:u-}c!  
} .y/NudD  
$@+p~)r(l  
Shell排序: PCV58n3  
P#vv+]/  
package org.rut.util.algorithm.support; <>&e/  
ZuF4N=;  
import org.rut.util.algorithm.SortUtil; rw}5nv  
wiK@o$S-  
/** S0Rf>Eo4  
* @author treeroot w@ gl  
* @since 2006-2-2 a<a&6 3  
* @version 1.0 %x cM_|AyR  
*/ YoSo0fQA  
public class ShellSort implements SortUtil.Sort{ tk3<sr"IQ  
h%C Eb<  
/* (non-Javadoc) 886 ('  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dy8In%  
*/ ~P"!DaAf  
public void sort(int[] data) { !}Woo$#ND  
for(int i=data.length/2;i>2;i/=2){ tF;& x g  
for(int j=0;j insertSort(data,j,i);  Rsa\V6N>  
} 1?e>x91  
} c'TiWZP~  
insertSort(data,0,1); `a/PIc"  
} kMJQeo79  
!~w6"%2+7  
/** Hb@G*L$  
* @param data c4qp3B_w  
* @param j pjmGzK  
* @param i ?hry=I(7r  
*/ AK*mcTr  
private void insertSort(int[] data, int start, int inc) { XEgx#F ;F  
int temp; alb+R$s  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mvL0F%\.\  
} {'=Nb 5F  
} H8o%H=I%  
} \KnD"0KW   
WO+?gu  
} 0Z1H6qn  
cciAMQhA  
快速排序: C9z~)aL}7  
*k@0:a(>  
package org.rut.util.algorithm.support; &)"7am(S`  
JQbMw>Y  
import org.rut.util.algorithm.SortUtil; KHc/x8^9  
;*37ta  
/** x>8}|ou  
* @author treeroot tmY-m,U  
* @since 2006-2-2 )kY _"= d  
* @version 1.0 2XecP'+m  
*/ _1>(GK5[  
public class QuickSort implements SortUtil.Sort{ oX:1 qJrC  
VT.{[Kl  
/* (non-Javadoc) eB/hyC1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d6d(? "  
*/ $E9daUt8"J  
public void sort(int[] data) { @cTZ`bg  
quickSort(data,0,data.length-1); h2/1S{/n]  
} 4f*Ua`E_  
private void quickSort(int[] data,int i,int j){ K+\0}qn  
int pivotIndex=(i+j)/2; !EmR(x  
file://swap 2t`9_zqLw  
SortUtil.swap(data,pivotIndex,j); XB!`*vZ/<  
ubN"(F:!-S  
int k=partition(data,i-1,j,data[j]); lA Ck$E  
SortUtil.swap(data,k,j); HBga'xJ  
if((k-i)>1) quickSort(data,i,k-1); n.8A Ka6  
if((j-k)>1) quickSort(data,k+1,j); oN6*WN tJ  
(h@yA8>n  
} GZhfA ;O,  
/** T.m)c%]^/  
* @param data 4k&O-70y4^  
* @param i _F/lY\vm  
* @param j kO`3ENN  
* @return "JUQ)> !?  
*/ f{ 4G  
private int partition(int[] data, int l, int r,int pivot) { "/K&qj  
do{ 9bcyPN  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6<Pg>Bg  
SortUtil.swap(data,l,r); %_@5_S  
} <1 1Tqb  
while(l SortUtil.swap(data,l,r); ,, H$>r_;  
return l; FnQ_=b  
} ':R3._tw\  
?o(X0  
} >~wk  
<QoE_z`76  
改进后的快速排序: /%q9hI   
~ GT\RAj[  
package org.rut.util.algorithm.support; % x*Ec[l  
Gv+Tg/  
import org.rut.util.algorithm.SortUtil; Q}f}Jf3P  
://# %SE  
/** ESf7b `tS  
* @author treeroot 'hi\98y  
* @since 2006-2-2 JQh s=Xg  
* @version 1.0 c'Tu,-  
*/ \gzwsT2&  
public class ImprovedQuickSort implements SortUtil.Sort { dV=5_wXZ$  
d|?(c~  
private static int MAX_STACK_SIZE=4096; Gx*0$4xJ3  
private static int THRESHOLD=10; Dx# @D#  
/* (non-Javadoc) cxJK>%84  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u+gXBU  
*/ K,,@',  
public void sort(int[] data) { ^Er`{|o6u  
int[] stack=new int[MAX_STACK_SIZE]; ZO0]+Ko  
n ua8y(W  
int top=-1; 56 kgL;$h  
int pivot; &eS70hq  
int pivotIndex,l,r; bq&S?! =s  
0V,MDX}#_  
stack[++top]=0; ;pyJ O_R[  
stack[++top]=data.length-1; \lakT_x  
WAmoKZw2  
while(top>0){ )~mc1 U`b  
int j=stack[top--]; JTB~nd>  
int i=stack[top--]; I \%Lb z  
iai4$Y(%  
pivotIndex=(i+j)/2; = hX-jP  
pivot=data[pivotIndex]; hYv 6-5_  
Aag)c~D  
SortUtil.swap(data,pivotIndex,j); ?_j6})2zY  
z*~ PYAt  
file://partition g2>u]3&W  
l=i-1; m'"VuH?^  
r=j; ow$l!8  
do{ jMWwu+w  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4NR5?s  
SortUtil.swap(data,l,r); yxUVM`.~  
} P:-/3  
while(l SortUtil.swap(data,l,r); x&/Syb  
SortUtil.swap(data,l,j); 7`<? f O  
F20-!b  
if((l-i)>THRESHOLD){ PZg]zz=V4  
stack[++top]=i; [*ovYpj^  
stack[++top]=l-1; d?y\~<  
} =LY^3TlDj  
if((j-l)>THRESHOLD){ ~)IJE+e>}  
stack[++top]=l+1; G/3lX^Z>  
stack[++top]=j; >8;%F<o2  
} x  Bw.M{  
YIUmCx0a  
} |=}~>!!  
file://new InsertSort().sort(data); E/P53CD  
insertSort(data); :9q^  
} '"\Mjz)/  
/** Ul0<Zxv  
* @param data E^W*'D  
*/ :p)9Heu  
private void insertSort(int[] data) { H08YM P>dc  
int temp; JU1; /3(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "(&`muIc  
} ^K8a#-  
} t\d;}@bl  
} 5nqdY*  
kGiw?~t=%  
} pcTXTy 28  
C\@YH]  
归并排序: 8B+^vF   
3v+}YT{>b  
package org.rut.util.algorithm.support; < ^!eaBR4  
G*p.JsZP  
import org.rut.util.algorithm.SortUtil; GJfNO-  
yzb&   
/** 1V$B^/_  
* @author treeroot 7$P(1D4  
* @since 2006-2-2 v$/i5kcWx  
* @version 1.0 5<?$/H|7T  
*/ 2#}IGZ`Yp/  
public class MergeSort implements SortUtil.Sort{ {:OVBX  
*<QL[qyV  
/* (non-Javadoc) >M85xjXP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `z`;eR2oX  
*/ yZaDNc9'  
public void sort(int[] data) { sn`?Foh  
int[] temp=new int[data.length];  HcS^3^Y  
mergeSort(data,temp,0,data.length-1); 3"D00~  
} xi=uXxl  
_!1c.[ \T  
private void mergeSort(int[] data,int[] temp,int l,int r){ @|A&\a-"J  
int mid=(l+r)/2; |ema-pRC  
if(l==r) return ; 2;r^~:  
mergeSort(data,temp,l,mid); 6.=1k  
mergeSort(data,temp,mid+1,r); $:Z xb  
for(int i=l;i<=r;i++){ Ap18qp  
temp=data; Q[tz)99~  
} 8so}^2hTlT  
int i1=l; -z1o~~  
int i2=mid+1; 30`H Xv@  
for(int cur=l;cur<=r;cur++){ SYLkC [0 k  
if(i1==mid+1) G=Bj1ss.  
data[cur]=temp[i2++]; NH6!|T  
else if(i2>r) {'aqOlw3<j  
data[cur]=temp[i1++]; s_kd@?=`x  
else if(temp[i1] data[cur]=temp[i1++]; (:]iHg3  
else D"5~-9<  
data[cur]=temp[i2++]; .W:], 5e  
} NO1]JpR  
} c3-bn #  
m':m`,c!  
} <-7Ha_#  
;yrcH+I$_  
改进后的归并排序: Z6pDQ^Ii  
24l9/v'  
package org.rut.util.algorithm.support; $"1&!  
NKYyMHv6  
import org.rut.util.algorithm.SortUtil; c~;.m<yrf  
]TN}` ]  
/** l]cQ7g5  
* @author treeroot -ZJ:<  
* @since 2006-2-2 m!if_Iq  
* @version 1.0 !OemS 7{  
*/ {.W%m  
public class ImprovedMergeSort implements SortUtil.Sort { IA^DfdZY  
FiL JF!  
private static final int THRESHOLD = 10; -2 ?fg   
|V]E8Qt  
/* EB,>k1IJ  
* (non-Javadoc) JOk`emle  
* =wc[ r?7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7G2N&v>  
*/ IC~D?c0H:  
public void sort(int[] data) { $ E6uA}s  
int[] temp=new int[data.length]; YSmz)YfX9  
mergeSort(data,temp,0,data.length-1); S?$T=[yY)  
} p%'((!a2  
1Btf)y'  
private void mergeSort(int[] data, int[] temp, int l, int r) { #UIg<:  
int i, j, k; B$j,:^  
int mid = (l + r) / 2; Dr609(zg^  
if (l == r) Joj8'  
return; 9G9lSj5>  
if ((mid - l) >= THRESHOLD) FT6cOMu  
mergeSort(data, temp, l, mid);  t&]IgF  
else !h\3cs`QU  
insertSort(data, l, mid - l + 1); ;2}Gqh)Yr  
if ((r - mid) > THRESHOLD) wAYc)u#  
mergeSort(data, temp, mid + 1, r); zQJbZ=5Bu"  
else ^,gKA\Wli  
insertSort(data, mid + 1, r - mid); %iNDRLR%I  
z=sqO'~  
for (i = l; i <= mid; i++) { *V}}3Degh  
temp = data; R_ }(p2  
} 1GxYuTZ{  
for (j = 1; j <= r - mid; j++) { ;.Y`T/eWS  
temp[r - j + 1] = data[j + mid]; tuSgh!  
} z?^p(UH  
int a = temp[l]; LWE !+(n  
int b = temp[r]; /k,p]/e  
for (i = l, j = r, k = l; k <= r; k++) { "%Ak[04'  
if (a < b) { as8<c4:v  
data[k] = temp[i++]; $) $sApB  
a = temp; (;h\)B!o  
} else { *`W82V  
data[k] = temp[j--]; &!=3Fbn  
b = temp[j]; ^B/{  
} zc"eSy< w$  
} _)Ms9RN  
} RK0IkRXQd  
E^!%m8--  
/** q0 <g#jK  
* @param data Q1rwTg\  
* @param l Onl:eG;@  
* @param i 03xQ%"TU<  
*/ %K%z<R8  
private void insertSort(int[] data, int start, int len) { n| %{R|s  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); T-MLW=Vu  
} r |(Lb'k  
} Jad'8}0J  
} cg4,PI% hz  
} 8PQ& 7o  
1/z1~:Il  
堆排序: t|/ /oEY  
D_{J:Hb  
package org.rut.util.algorithm.support; I;7VX5X  
k$zDofdfp  
import org.rut.util.algorithm.SortUtil; Uhf -}Jdw  
@!-= :<h  
/** OG.`\G|  
* @author treeroot "371`!%  
* @since 2006-2-2 r8qee$^M  
* @version 1.0 i9\Pks#l%  
*/ Z7(hW,60  
public class HeapSort implements SortUtil.Sort{ #M:W?&.  
c;Li~FLR  
/* (non-Javadoc) ?#W>^Za=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K3jno+U&  
*/ I++!F,pB  
public void sort(int[] data) { :ZUy(8%Wl  
MaxHeap h=new MaxHeap(); `VHm,g2  
h.init(data); = zsXa=<  
for(int i=0;i h.remove(); EV9m\'=j  
System.arraycopy(h.queue,1,data,0,data.length); 1{A 4_/R  
} Ys\l[$_`*  
!nu#r$K(  
private static class MaxHeap{ _PuMZjGL  
]xuq2MU,l  
void init(int[] data){ CxO) d7c  
this.queue=new int[data.length+1]; hM;EUWv  
for(int i=0;i queue[++size]=data; c;j]/R$i  
fixUp(size); fUa`Y ryQ  
} cewQQ&  
} :`_wy-}V  
0-=QQOART\  
private int size=0; |/q*Fg[f  
1j}o. 0\  
private int[] queue; /GEqU^ B  
BYu|loc  
public int get() {  p.zU9rID  
return queue[1]; ieObo foD  
} KxY|:-"Tt  
,O2Uj3"  
public void remove() { nwz}&nR  
SortUtil.swap(queue,1,size--); \"n&|_SZ\  
fixDown(1); 5t0$nKah]  
} 7bTs+C_;7  
file://fixdown iK)w3S}k1y  
private void fixDown(int k) { F7mzBrz  
int j; \&SP7~-eq  
while ((j = k << 1) <= size) { }UX>O  
if (j < size %26amp;%26amp; queue[j] j++; >b/Yg:t  
if (queue[k]>queue[j]) file://不用交换 Hd4&"oeY  
break; 3wD6,x-e   
SortUtil.swap(queue,j,k); U,)+wZJ  
k = j; +&JF|#FQ`  
} X^"95Ic  
} $+$+;1[  
private void fixUp(int k) { a "8/y4Y  
while (k > 1) { ~?nPp$^  
int j = k >> 1; ~bg FU  
if (queue[j]>queue[k]) 7kleBDDT  
break; &7}-Xvc  
SortUtil.swap(queue,j,k); ='>k|s:  
k = j; Pf]L`haGN  
} 7HFw*;  
} yh} V u  
k4eV*e8  
}  8DyE  
>a Q; 8  
} %$S.4#G2  
GN(PH/fO9  
SortUtil: .,-t}5(VSq  
XVE(p3-  
package org.rut.util.algorithm; $7,n8ddRy  
. [*6W.X  
import org.rut.util.algorithm.support.BubbleSort; i $#bg^  
import org.rut.util.algorithm.support.HeapSort; s!uewS.  
import org.rut.util.algorithm.support.ImprovedMergeSort; KK/~W  
import org.rut.util.algorithm.support.ImprovedQuickSort; t4 $cMf  
import org.rut.util.algorithm.support.InsertSort; e~jp< 4  
import org.rut.util.algorithm.support.MergeSort; lfb]xu]O  
import org.rut.util.algorithm.support.QuickSort; JoIffI?{(D  
import org.rut.util.algorithm.support.SelectionSort; iwrS>Sm  
import org.rut.util.algorithm.support.ShellSort; d8e6}C2v  
;IE|XR(  
/** #*XuU8q?  
* @author treeroot R 8?Xz5  
* @since 2006-2-2 B!yAam#^  
* @version 1.0 e&#qj^  
*/ ?tg(X[h{S  
public class SortUtil { <LH(>  
public final static int INSERT = 1; x~Y]c"'D  
public final static int BUBBLE = 2; 02SFFqm  
public final static int SELECTION = 3; QzCu$ [  
public final static int SHELL = 4; !ku5P+y$  
public final static int QUICK = 5; {H=DeQ  
public final static int IMPROVED_QUICK = 6; c"H*9u:  
public final static int MERGE = 7; aU4v-9@U8  
public final static int IMPROVED_MERGE = 8; 5W(G~m?jC6  
public final static int HEAP = 9; R6ca;  
XN'x`%!*3#  
public static void sort(int[] data) { t,)` Zu$  
sort(data, IMPROVED_QUICK); #0zMPh /U}  
} c>,|[zP{  
private static String[] name={ L?23Av0W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %D:Mt|  
}; oEGe y8?  
@Q 8E)k@  
private static Sort[] impl=new Sort[]{ %lF}!  
new InsertSort(), pA&CBXio  
new BubbleSort(), ^0Cr-  
new SelectionSort(), hWP$U  
new ShellSort(), 'P3CgpF<Z2  
new QuickSort(), "d^hY}Xx  
new ImprovedQuickSort(), f,wB.MN  
new MergeSort(), +vY8HQ|v  
new ImprovedMergeSort(), /{gCf  
new HeapSort() mQ*:?\@  
}; xxpvVb)mF  
7Y"CeU-S  
public static String toString(int algorithm){ A'^y+42jY  
return name[algorithm-1]; U ]Ek 5p  
} KP(RK4F  
NifzZEX  
public static void sort(int[] data, int algorithm) { [7]Kvb2t  
impl[algorithm-1].sort(data); X"0n*UTF,  
} wi-O}*O   
p~vq1D6  
public static interface Sort { @ )owj^sA  
public void sort(int[] data); 2y s'q !  
} r+r-[z D(  
n&DRh.@  
public static void swap(int[] data, int i, int j) { Y]!8Ymuww@  
int temp = data; bKRz=$P?  
data = data[j];  } Wx#"6  
data[j] = temp; + KGZk?%  
} zGjf7VV2a  
} A2LqBirkl  
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