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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。 D:^$4}h f  
插入排序: -HSs^dP`  
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package org.rut.util.algorithm.support; yz8mP3"c:o  
fXI:Y8T  
import org.rut.util.algorithm.SortUtil; 0Wa}<]:^  
/** d8-A*W[  
* @author treeroot FR2= las"z  
* @since 2006-2-2 WE]e m >  
* @version 1.0 BH]Ynu&o  
*/ akw,P$i  
public class InsertSort implements SortUtil.Sort{ bVP"(H]  
STZPYeXE  
/* (non-Javadoc) s,#>m*Rh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;%tF58&  
*/ ljl^ GFo  
public void sort(int[] data) { `.s({/|[  
int temp; t!Sq A(-V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V%$/#sza  
} v8AS=sY4r  
} T\~x.aH`^  
} bR@p<;G|  
]smkTo/  
} qC F5~;7  
[Nn`l,  
冒泡排序: }neY<{z  
c'/l,k  
package org.rut.util.algorithm.support; |5Xq0nvCe  
U9b?i$  
import org.rut.util.algorithm.SortUtil; ~4"qV_M  
WA dCF-S  
/** 4pw6bK,s2\  
* @author treeroot D %Xo&V[  
* @since 2006-2-2 quY:pqG38q  
* @version 1.0 MSf;ZB  
*/ KYzv$oK  
public class BubbleSort implements SortUtil.Sort{ F:x [  
.r*2|  
/* (non-Javadoc) z5ij(RE]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H":oNpfb  
*/ %*BlWk!Q  
public void sort(int[] data) { 4apL4E"r  
int temp; II6CHjW`;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ x _c[B4Tw  
if(data[j] SortUtil.swap(data,j,j-1); MEB it  
} 6{ =\7AY  
} Lemui)  
} <&C]s b  
} iY21Ql%  
J2:y6kGj>  
} &b:1I 7Cp*  
\rv<$d@L  
选择排序: t!RiUZAo  
5\z `-)  
package org.rut.util.algorithm.support; >2~=)L  
wI(M^8F_Mf  
import org.rut.util.algorithm.SortUtil; Xh56T^,2  
*}P~P$q%  
/** Gz .|]:1  
* @author treeroot H%D$(W  
* @since 2006-2-2 21"1NJzP  
* @version 1.0 eJg8,7WC  
*/ %c4Hse#Y  
public class SelectionSort implements SortUtil.Sort { X&kp;W  
Y]&j,j&  
/* 1I:+MBGin  
* (non-Javadoc) Bz,?{o6s)Q  
* :OuA)f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KCs[/]  
*/ ]\|VpIg  
public void sort(int[] data) { 0Vx.nUQ  
int temp; nr<4M0tIp  
for (int i = 0; i < data.length; i++) { ]q4rlT.i  
int lowIndex = i; Dh=9Gns9  
for (int j = data.length - 1; j > i; j--) { @;"|@!l|  
if (data[j] < data[lowIndex]) { 8i2n;LAz  
lowIndex = j; 9H]{g*kL  
} 7 qS""f7  
} -f DnA4;  
SortUtil.swap(data,i,lowIndex); hIT+gnhh  
} >7 ="8  
} i{`:(F5*  
v/_  
} c Vc-  
r]6C  
Shell排序: |:gf lseE  
OGl}-kw  
package org.rut.util.algorithm.support; m;,N)<~  
+U3DG$  
import org.rut.util.algorithm.SortUtil; PpzP7  
'tH_p  
/** s%W C/ZK  
* @author treeroot ,y#Kv|R  
* @since 2006-2-2 o2F)%TDY  
* @version 1.0 NCDvo bYJ  
*/ {z{bY\  
public class ShellSort implements SortUtil.Sort{ A6thXs2  
A*\.NTM  
/* (non-Javadoc) 5?x>9C a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :;9F>?VN>0  
*/ r8RoE`/T  
public void sort(int[] data) { ,>%}B3O:Y=  
for(int i=data.length/2;i>2;i/=2){ %$.3V#?  
for(int j=0;j insertSort(data,j,i); K|[*t~59  
} NPp;78O0[  
} 'd9INz.  
insertSort(data,0,1); %#kg#@z_`e  
} %lGl,me H  
t7aefV&_,  
/** HMNLa*CL'  
* @param data 2fL;-\!y(  
* @param j H*PSR  
* @param i Y^wW2-,m  
*/ fumm<:<CLO  
private void insertSort(int[] data, int start, int inc) { 50S&m+4d+  
int temp; _z|65H  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C&(N I  
} Yo6*C  
} ``hf=`We  
} gtppv6<Mj4  
D9H?:pmv?  
} asppRL||  
 "y}--  
快速排序: I=`U7Bis"  
V@g'#= {r  
package org.rut.util.algorithm.support; ;~m8;8)  
uxr #QA  
import org.rut.util.algorithm.SortUtil; S4_YT@VD%  
a .k.n<  
/** 0Qf,@^zL*  
* @author treeroot },{$*f[  
* @since 2006-2-2 rX2.i7i,  
* @version 1.0 QTk}h_<u  
*/ !$gR{XH$]  
public class QuickSort implements SortUtil.Sort{ GjvOM y  
N 5lDS  
/* (non-Javadoc) I&x=;   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9y"@(  
*/ i9,ge Q7d  
public void sort(int[] data) { <Z mg#  
quickSort(data,0,data.length-1); qm/22:&v5  
} %]}  
private void quickSort(int[] data,int i,int j){ Rl?_^dPx  
int pivotIndex=(i+j)/2; tEvut=k'  
file://swap Z 2V.3  
SortUtil.swap(data,pivotIndex,j); G[uK-U  
_-K2/6zy  
int k=partition(data,i-1,j,data[j]); "R;U/+  
SortUtil.swap(data,k,j); ,is3&9  
if((k-i)>1) quickSort(data,i,k-1); "*e$aTZB\  
if((j-k)>1) quickSort(data,k+1,j); C)ERUH2i  
f<d`B]$(  
} DEKP5?]  
/** ?N*>*"  
* @param data E Nh l&J  
* @param i h+g_rvIG*  
* @param j )Q&(f/LT  
* @return [}E='m}u9+  
*/ IL#"~D?  
private int partition(int[] data, int l, int r,int pivot) { FpmM63$VN[  
do{ "c%0P"u  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7rc0yB  
SortUtil.swap(data,l,r); XpB_N{v9w  
} O:;w3u7;u  
while(l SortUtil.swap(data,l,r); /K@XzwM  
return l; @<hb6bo,N  
} O`IQ(,yef  
 MzdV2.  
} %} SrL*  
g[' ^L +hd  
改进后的快速排序: }c,}V  
-:+|zF@f  
package org.rut.util.algorithm.support; xX&+WR  
Cn34b_Sbd  
import org.rut.util.algorithm.SortUtil; 4 #MtF'J  
y@S$^jk.  
/** Y8~"vuIE5  
* @author treeroot iy.p n  
* @since 2006-2-2 y&$A+peJ1  
* @version 1.0 UmP/h@8  
*/ o q Xg  
public class ImprovedQuickSort implements SortUtil.Sort { {BN#h[#B{  
Tv,[DI +  
private static int MAX_STACK_SIZE=4096; hR?{3d#x2  
private static int THRESHOLD=10; ~g]Vw4pv  
/* (non-Javadoc) &-)N'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AlaW=leTe  
*/ w,.TTTad  
public void sort(int[] data) { E4jNA }3k+  
int[] stack=new int[MAX_STACK_SIZE]; g wRZ%.Cn  
,]F,Uu_H7  
int top=-1; `g=J%p  
int pivot; tCH!my_  
int pivotIndex,l,r; ^}=,g  
>y7?-*0  
stack[++top]=0; 9s q  
stack[++top]=data.length-1; _1\v  
(mpNcOY<D  
while(top>0){ %$Tji  
int j=stack[top--]; "%w u2%i  
int i=stack[top--]; s/#!VnU6  
By!o3}~g  
pivotIndex=(i+j)/2; m+[Ux{$  
pivot=data[pivotIndex]; VscE^'+  
zR:L! S  
SortUtil.swap(data,pivotIndex,j); F@KGj|  
&K#M*B ,*p  
file://partition ""G'rN_=Bi  
l=i-1;  =j]<t  
r=j; oJz^|dW  
do{ +mj y<~\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $qnZl'O>  
SortUtil.swap(data,l,r); QA`sx  
} 7>%8eEc  
while(l SortUtil.swap(data,l,r); i-_mTY&M  
SortUtil.swap(data,l,j); {%H'z$|{  
BX7kO0j  
if((l-i)>THRESHOLD){ D/&o& G96  
stack[++top]=i; T.BW H2gRP  
stack[++top]=l-1; zTSTEOP}%Y  
} XNkn|q2  
if((j-l)>THRESHOLD){ UB@+c k  
stack[++top]=l+1; K+3=tk]W9u  
stack[++top]=j; +I|vzz`ZVr  
} 2HA:"v8  
^\=`edN0  
} ^jZbo {  
file://new InsertSort().sort(data); :4/3q|cn  
insertSort(data); |/{=ww8|  
} ",; H`V  
/** Wd:uV  
* @param data 29.h91  
*/ z Rr*7G  
private void insertSort(int[] data) { aX'*pK/-  
int temp; yvB.&<]No  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  ZBp/sm  
} H<,gU`&R  
} \_f(M|  
} +ye3HGD  
2^ nxoye  
} rjYJs*#  
OQJ6e:BGt  
归并排序: W/h[A3 `3N  
E:nF$#<'N  
package org.rut.util.algorithm.support; /a4{?? #e  
(O3nL.  
import org.rut.util.algorithm.SortUtil; s;Q!X ?Q  
ZUd-<y  
/** cVF "!.  
* @author treeroot AoxA+.O  
* @since 2006-2-2 N<}5A%  
* @version 1.0 pW3^X=6  
*/ *$g-:ILRuZ  
public class MergeSort implements SortUtil.Sort{ $>LQ6|XRu  
S"H2 7  
/* (non-Javadoc) $=4QO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]c'A%:f<  
*/ PdWx|y{%  
public void sort(int[] data) { ;:NJCuG  
int[] temp=new int[data.length]; _oeS Uzq.  
mergeSort(data,temp,0,data.length-1); gg2( 5FPP  
} `;egv*!P  
3^yK!-Wp(  
private void mergeSort(int[] data,int[] temp,int l,int r){ Nj/ x. X  
int mid=(l+r)/2; jmZI7?<z  
if(l==r) return ; )Pv%#P-<  
mergeSort(data,temp,l,mid); k8zI(5.>  
mergeSort(data,temp,mid+1,r); + {'.7#  
for(int i=l;i<=r;i++){ uwGc@xOgg,  
temp=data; zdam^o  
} Zj'9rXhrM1  
int i1=l; m)v &v6  
int i2=mid+1; 'm$L Ij?@  
for(int cur=l;cur<=r;cur++){ )9]PMA?u  
if(i1==mid+1) p4Z(^+Aa  
data[cur]=temp[i2++]; l.M0`Cn-%  
else if(i2>r) Iu=(qU  
data[cur]=temp[i1++]; dSHDWu&  
else if(temp[i1] data[cur]=temp[i1++]; 5Gm_\kd  
else c7H^$_^=  
data[cur]=temp[i2++]; y?3; 06y|  
} K{+2G&i  
} KMax$  
fp"W[S|uL  
} 4#Jg9o   
O;3>sLgc  
改进后的归并排序: p6S8VA  
=Dj#gV  
package org.rut.util.algorithm.support; cFXp  
R=\IEqqsi  
import org.rut.util.algorithm.SortUtil; !dq.KwL  
"#g}ve,  
/** <F'\lA9  
* @author treeroot :g/tZd$G5  
* @since 2006-2-2 }x ,S%M-  
* @version 1.0 Dw"\/p:-3  
*/ &H+xzN  
public class ImprovedMergeSort implements SortUtil.Sort { :Hbv)tS\3w  
2~[juWbz  
private static final int THRESHOLD = 10; kq-) ^,{y  
D2O~kN d  
/* *m(=V1"  
* (non-Javadoc) dc'Y `e  
* -nwypu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FP>2C9:d  
*/ 0n'_{\yz  
public void sort(int[] data) { "J1 4C9u   
int[] temp=new int[data.length]; 2fS:- 8N  
mergeSort(data,temp,0,data.length-1); U $UIN#  
} y1#1Ne_  
\{D" !e  
private void mergeSort(int[] data, int[] temp, int l, int r) { ),!qTjD  
int i, j, k; 5lum$5  
int mid = (l + r) / 2; y B$x>Q'C(  
if (l == r) |vC~HJpuv'  
return; hqdDm  
if ((mid - l) >= THRESHOLD) $pz/?>!  
mergeSort(data, temp, l, mid); H,NF;QPPC  
else rT>wg1:  
insertSort(data, l, mid - l + 1); Alq(QDs  
if ((r - mid) > THRESHOLD) qxj(p o  
mergeSort(data, temp, mid + 1, r); '<uq3?5  
else X wtqi@zlE  
insertSort(data, mid + 1, r - mid); jiC>d@~y  
v` r:=K  
for (i = l; i <= mid; i++) { ,fRq5"?  
temp = data; Tsx>&WC  
} oL<St$1  
for (j = 1; j <= r - mid; j++) { Z30A{6}  
temp[r - j + 1] = data[j + mid]; "wc<B4"  
} tl>7^hH  
int a = temp[l]; 7-A2_!_x{  
int b = temp[r]; E(|>Ddv B&  
for (i = l, j = r, k = l; k <= r; k++) { i-&yH  
if (a < b) { t`QENXA}  
data[k] = temp[i++]; Bbp|!+KP{(  
a = temp; ##ANrG l  
} else { i@'dH3-kO  
data[k] = temp[j--]; P93@;{c(  
b = temp[j]; 6H|S;K+  
} {xB3S_,8  
} jj>]9z  
} Z6m)tZVM  
% u6Sr5A[s  
/** b`_Q8 J  
* @param data B7%U_F|m  
* @param l FgO)DQm  
* @param i #fM'>$N  
*/ ,u!sjx  
private void insertSort(int[] data, int start, int len) { B/C,.?Or  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D)Dr__x  
} wA.\i  
} MO]&bHH7;  
} nj4/#W  
} dqAw5[qMJ  
eDB;cN  
堆排序: B erwI 7!=  
J8D,ZfPN`d  
package org.rut.util.algorithm.support; o"SMbj  
GKCroyor  
import org.rut.util.algorithm.SortUtil; 9!tW.pK5  
\j.:3X r  
/** t g/H2p^Y  
* @author treeroot F1hHe<)  
* @since 2006-2-2 h7@6T+#WoT  
* @version 1.0 A)~6Im  
*/ B-ESFATc  
public class HeapSort implements SortUtil.Sort{ oXS}IL og'  
H[|~/0?K  
/* (non-Javadoc) d!{r  v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q'11^V!0  
*/ B1Oq!k  
public void sort(int[] data) { |'2d_vR  
MaxHeap h=new MaxHeap(); BORA(,  
h.init(data); LHmZxi?  
for(int i=0;i h.remove(); .8|X   
System.arraycopy(h.queue,1,data,0,data.length); t:c.LFrF  
} -.3w^D"l  
@|)Z"m7  
private static class MaxHeap{ L8n|m!MOD  
qY#6SO`_iy  
void init(int[] data){ ~_ a-E  
this.queue=new int[data.length+1]; 4/)k)gLI  
for(int i=0;i queue[++size]=data; Qci]i)s$js  
fixUp(size); 6@Y|"b  
} {^\r`V p  
} 3N:D6w-R  
::F|8  
private int size=0; Np)lIGE  
:i7;w%B  
private int[] queue; ]N[ 5q=A5  
GH xp7H  
public int get() { *owU)  
return queue[1]; |D.ND%K&  
} D3A/l  
S@sO;-^+  
public void remove() { u-C)v*#L  
SortUtil.swap(queue,1,size--); s<o7!!c  
fixDown(1); iyog`s c  
} 39jG8zr=Z[  
file://fixdown -{+}@?  
private void fixDown(int k) { l@:0e]8|o  
int j; V1JIht>Opo  
while ((j = k << 1) <= size) { .{KVMc  
if (j < size %26amp;%26amp; queue[j] j++; Lh<).<S  
if (queue[k]>queue[j]) file://不用交换 6aV_@no.C  
break; bu"!jHPB  
SortUtil.swap(queue,j,k); 0|b>I!_"g  
k = j; &VcV$8k  
} 1i ] ^{;]  
} FCn_^l)EA  
private void fixUp(int k) { Tb-F]lg$  
while (k > 1) { -`t^7pr  
int j = k >> 1; snikn&  
if (queue[j]>queue[k]) i 3SHg\~Z  
break; 2:=  
SortUtil.swap(queue,j,k); ,v&(YOd  
k = j; 8JD,u  
} <Ok3FE.K  
} o8vug$=Z  
IqGdfL6[(  
} A+)`ZTuO  
2Wb]4-  
} F}q c0  
Hq 188<  
SortUtil: T,tdL N-  
j8`BdKg  
package org.rut.util.algorithm; u~-8d;+?y  
eR"<33{  
import org.rut.util.algorithm.support.BubbleSort; ;({W#Wa  
import org.rut.util.algorithm.support.HeapSort; NgCvVWto  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2 Vrw  
import org.rut.util.algorithm.support.ImprovedQuickSort; *WT`o>  
import org.rut.util.algorithm.support.InsertSort; AzxXB  
import org.rut.util.algorithm.support.MergeSort; 7\q~%lDE  
import org.rut.util.algorithm.support.QuickSort; 6MkP |vr6  
import org.rut.util.algorithm.support.SelectionSort; ;w[0t}dPl  
import org.rut.util.algorithm.support.ShellSort; OydwE  
O0y_Lm\  
/** +?!(G}5  
* @author treeroot ?I@W:#>o  
* @since 2006-2-2 ia 73?*mXT  
* @version 1.0 3%ZOKb"D*  
*/ *=c1d o%F  
public class SortUtil { mdg i5v  
public final static int INSERT = 1; VU d\QR-  
public final static int BUBBLE = 2; baK$L;Xo:  
public final static int SELECTION = 3; "FKOaQ%IH  
public final static int SHELL = 4; # N cK X  
public final static int QUICK = 5; b>N8F^}~O  
public final static int IMPROVED_QUICK = 6; 1y4  
public final static int MERGE = 7; <A'$%`6m  
public final static int IMPROVED_MERGE = 8; 0_t`%l=  
public final static int HEAP = 9; 8*T=Xei8  
E+w<RNBmz  
public static void sort(int[] data) { `^y7f  
sort(data, IMPROVED_QUICK); n=ux5M  
} 5[u]E~Fl}  
private static String[] name={ xUistwq  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Vy, DN~ag  
}; hfy_3}_  
b%/ 1$>_  
private static Sort[] impl=new Sort[]{ {jX2}  
new InsertSort(), Per1IcN  
new BubbleSort(), >J>[& zS  
new SelectionSort(), %-0t?/>  
new ShellSort(), ;BIY^6,7e  
new QuickSort(), .h4 \Y A  
new ImprovedQuickSort(), w: Kl6"c  
new MergeSort(), q#=(e:aCb  
new ImprovedMergeSort(), 5N&?KA-  
new HeapSort() J~UuS+Ufv  
}; Tyf`j,=  
7VFLJr t  
public static String toString(int algorithm){ YV anW  
return name[algorithm-1]; 'ub@]ru|  
} .xWC{}7[  
OH(waKq2I  
public static void sort(int[] data, int algorithm) { +&2%+[nBZ  
impl[algorithm-1].sort(data); %n:k#  
} b`O'1r\Y;  
d4c8~L H-  
public static interface Sort { nK%LRcAs  
public void sort(int[] data); QW(Mz Hg  
} }@+:\   
~1vDV>dpE  
public static void swap(int[] data, int i, int j) { [^98fAlz6  
int temp = data; 7Da`   
data = data[j]; h{HHLR  
data[j] = temp; k{SAvKx=  
} d,n 'n  
} &@Be2!%'9K  
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