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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。 $k|g"9  
插入排序: BHd&yIyI  
8;z6=.4xtg  
package org.rut.util.algorithm.support; IYqBQnX}oM  
@En^wN  
import org.rut.util.algorithm.SortUtil; g3Ec"_>P  
/** Mx6@$tQ%  
* @author treeroot M^MdRu  
* @since 2006-2-2 l*ayd>`~x  
* @version 1.0 \qR7mI/*  
*/ `Y BC  
public class InsertSort implements SortUtil.Sort{ -#0qV:D  
tna .52*/  
/* (non-Javadoc) @xQgY*f#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *n; !G8\  
*/ AcS|c:3MUy  
public void sort(int[] data) { O>qll 6]{@  
int temp; `D>S;[~S7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~Cl){8o  
} #OBJzf*p  
} 6S\C}U/   
} .EpV;xq}  
Cnnh7`  
} ^:6{22C{  
WxW7qt  
冒泡排序: ~;Ov-^tp  
 gG uZ8:f  
package org.rut.util.algorithm.support; <!L>Exh&r  
bQE};wM,  
import org.rut.util.algorithm.SortUtil; k xP-,MD  
uJOJ-5}yt  
/** (H)2s Y  
* @author treeroot 4 d;|sI@  
* @since 2006-2-2 VK}fsOnj0  
* @version 1.0 QN@CPuy  
*/ 0="%Y ^N  
public class BubbleSort implements SortUtil.Sort{ &?VQ,+[ <  
tDSJpW'd  
/* (non-Javadoc) (]b!{kS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =fu :@+  
*/ w<zIAQN  
public void sort(int[] data) { Ks=>K(V6  
int temp; h lkn%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ =NOH:#iQ  
if(data[j] SortUtil.swap(data,j,j-1); [OHxonU  
} |\QgX%  
} Rz (QC\(  
} -9"['-WH,  
} 'I_Qb$  
0zo?eI  
} 9dFy"yxYa  
+cIUGF p}  
选择排序: /[O(ea$U  
PH`9MXh  
package org.rut.util.algorithm.support; ="x\`+U  
^m?KRm2  
import org.rut.util.algorithm.SortUtil; P9=?zh 6G.  
W)9K`hM6  
/** d_4T}% q  
* @author treeroot Vm%1> '&  
* @since 2006-2-2 $P>`m$(8  
* @version 1.0 ${+ @gJ+S  
*/ 7#@cz5Su  
public class SelectionSort implements SortUtil.Sort { S?RN?1  
cj+ FRG~u  
/* i%ZW3MrY~  
* (non-Javadoc) 5V5%/FU m  
* u1t% (_h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $SM# < @  
*/ $tz;<M7B  
public void sort(int[] data) { )_{dWf1  
int temp; ulu9'ch  
for (int i = 0; i < data.length; i++) { /E Bo3`  
int lowIndex = i; 7w 37S  
for (int j = data.length - 1; j > i; j--) { f:ZAG4B  
if (data[j] < data[lowIndex]) { Wm_4avXtO  
lowIndex = j; x 8Retuv  
} i7ISX>%  
} K3m]%m2\  
SortUtil.swap(data,i,lowIndex); vN|l\!~  
} {S,l_d+(  
} 0dhF&*h|L  
ktj]:rCkF  
} U"q/rcA  
)E6;-rD0^+  
Shell排序: b`)){LR  
(rkyWz  
package org.rut.util.algorithm.support; O<96/a'  
RRmLd/(  
import org.rut.util.algorithm.SortUtil; T?:glp[4I  
d@ Y}SWTB  
/** H2Z1TIh  
* @author treeroot ]?3un!o3o  
* @since 2006-2-2 zXv3:uRp.  
* @version 1.0 ~vXaqCX  
*/ 4D[ '^q  
public class ShellSort implements SortUtil.Sort{ ZQ)>s>-  
Yu?95qktP  
/* (non-Javadoc) <,3^|$c%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %6L^2 X  
*/ b8LoIY*  
public void sort(int[] data) { ox:[f9.5  
for(int i=data.length/2;i>2;i/=2){ G2t;DN(  
for(int j=0;j insertSort(data,j,i); *NkA8PC  
} 5WC+guK7  
} [|P!{?A43|  
insertSort(data,0,1); A;/-u<f  
} vw>2(K=e1  
'|S%a MLZ)  
/** w=j  
* @param data  Np'2}6P  
* @param j *c%oN |  
* @param i o&`<+4 i  
*/ 2WtRJi?b|  
private void insertSort(int[] data, int start, int inc) { F#5B<I  
int temp; 2P/K K  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c6nflk.l  
} tj Gd )  
} OR}c)|1  
} H|R T?Q  
 PZ{Dv'C  
} KN7^:cC  
K$M^gh0  
快速排序: qw@puw@D  
.pfP7weQ  
package org.rut.util.algorithm.support; C0S^h<iSe*  
w"OP8KA:^T  
import org.rut.util.algorithm.SortUtil; L3 G \  
M9y <t'  
/** TUHi5K  
* @author treeroot wD68tG$  
* @since 2006-2-2 \[gReaI  
* @version 1.0 Row)hx8  
*/ krsYog(^z  
public class QuickSort implements SortUtil.Sort{ M7ers|&{  
0PU8 #2pR  
/* (non-Javadoc) ([-|}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z^]|o<.<I  
*/ UJfEC0  
public void sort(int[] data) { YqPQ%  
quickSort(data,0,data.length-1); ;]gP@h/  
} oqLfesV~  
private void quickSort(int[] data,int i,int j){ {"&SJt[%X  
int pivotIndex=(i+j)/2; /1x,h"T\<  
file://swap 'XzXZJ[uq  
SortUtil.swap(data,pivotIndex,j); ZO4*sIw%  
5aln>1x>hn  
int k=partition(data,i-1,j,data[j]); t Z`z  
SortUtil.swap(data,k,j); _~q?_'kx  
if((k-i)>1) quickSort(data,i,k-1); v^zu:Z*  
if((j-k)>1) quickSort(data,k+1,j); oP!;\a( SL  
-O&CI)`;B  
} E2cB U{x  
/** oS7(s  
* @param data \3'9Uz,OC  
* @param i aX~%5 mF  
* @param j AX= 1b,s  
* @return 3t<a $i  
*/ Y`o+XimX  
private int partition(int[] data, int l, int r,int pivot) { Qb)C[5a}  
do{ HsnLm67'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); br0++}vwL  
SortUtil.swap(data,l,r); 7\f\!e <  
} Ee@4 %/v  
while(l SortUtil.swap(data,l,r); >nw++[K_  
return l; ~(pmLZ<GW}  
} VxY+h`4#  
(tCUlX2  
} vfl5Mx4  
#% of;mJv  
改进后的快速排序: Ya;9]k8,  
6I!7c^]t  
package org.rut.util.algorithm.support; :=8t"rO=W  
[Z~ 2  
import org.rut.util.algorithm.SortUtil; ithewup  
nPs7c %  
/** /F4pb]U!*  
* @author treeroot $2M#qkik-  
* @since 2006-2-2 [74F6Qp  
* @version 1.0 4#5:~M }  
*/ w.lAQ5)I%\  
public class ImprovedQuickSort implements SortUtil.Sort { =xNv\e  
m}8[#:  
private static int MAX_STACK_SIZE=4096; >~`r:0',  
private static int THRESHOLD=10; {X*^s5{;H  
/* (non-Javadoc)  ;b`[&g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K =wBpLB  
*/ XuD=E  
public void sort(int[] data) { rHf&:~   
int[] stack=new int[MAX_STACK_SIZE]; +J{0 E  
{5d9$v7k4  
int top=-1; ZVbl88,(l  
int pivot; wWSdTLX  
int pivotIndex,l,r; p|Q*5TO  
u ~3%bJ]  
stack[++top]=0; cZ(elZ0~  
stack[++top]=data.length-1; f)g7 3=  
<L{(Mj%Z  
while(top>0){ QT9n,lX  
int j=stack[top--]; t ^[8RhD  
int i=stack[top--]; xS7$%w['  
h.!}3\Y  
pivotIndex=(i+j)/2; gqR)IVk>%  
pivot=data[pivotIndex]; "wlt> SU  
j S;J:$>^  
SortUtil.swap(data,pivotIndex,j); /s-A?lw^2  
>yXN,5d[  
file://partition ,R$u?c0>'&  
l=i-1; qim 'dp:  
r=j; _{Sm k [  
do{ M:P0m6ie  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R(-<BtM!-  
SortUtil.swap(data,l,r); }BiiE%a  
} Ja SI^go  
while(l SortUtil.swap(data,l,r);  Ug:\  
SortUtil.swap(data,l,j); Qj3a_p$)P  
K"u NxZ  
if((l-i)>THRESHOLD){ ->h6j  
stack[++top]=i; ? tfT8$  
stack[++top]=l-1; })w*m  
} 7HVZZ!>~  
if((j-l)>THRESHOLD){ kGL1!=>  
stack[++top]=l+1; a6:x"Tv  
stack[++top]=j; 7@6g<"I  
} 'kYwz;gp  
ur vduE  
} (mtoA#X1:h  
file://new InsertSort().sort(data); s;1]tD  
insertSort(data); K_ lVISBQ  
} `fNG$ODL   
/** ~>0qZ{3J_  
* @param data Hg9CZM ko  
*/ _BFOc>0  
private void insertSort(int[] data) { pDQ}*   
int temp; l c_E!"1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EwS!]h?  
}  e(NLX`  
} /t6X(*xoy  
} /XudV2P-CA  
4CQ"8k(S"  
} w nTV|^Q  
[>^PRs  
归并排序: =?h~.lo  
7 Sa1;%R  
package org.rut.util.algorithm.support; `xiCm':  
);*YQmdx'  
import org.rut.util.algorithm.SortUtil; +[J/Zw0{  
EZ.!rh~+  
/** &20P,8@  
* @author treeroot : L_BG)dM  
* @since 2006-2-2 pxSX#S6I  
* @version 1.0 _/S?#   
*/ XE3'`D !  
public class MergeSort implements SortUtil.Sort{ ,Rx{yf]k  
dq IlD!  
/* (non-Javadoc) eZr&x~] -w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =<@\,xN>C  
*/ _SACqamo5s  
public void sort(int[] data) { JlKM+UE :  
int[] temp=new int[data.length]; +,v-=~5  
mergeSort(data,temp,0,data.length-1); ubu?S%`  
} &TG5rUUg  
5j0{p$'9  
private void mergeSort(int[] data,int[] temp,int l,int r){ W23]Bx  
int mid=(l+r)/2; SEl#FWR  
if(l==r) return ; n,~;x@=5  
mergeSort(data,temp,l,mid); !GW ,\y  
mergeSort(data,temp,mid+1,r); [+w3J#K  
for(int i=l;i<=r;i++){ [ BT)l]  
temp=data; - O"i3>C  
} 9_fePS|Z4  
int i1=l; wh:1PP  
int i2=mid+1; aS|wpm)K>8  
for(int cur=l;cur<=r;cur++){ * MM[u75  
if(i1==mid+1) }X;U|]d  
data[cur]=temp[i2++]; OzT#1T1'c  
else if(i2>r) Dml*T(WM>  
data[cur]=temp[i1++]; XJ!(F#zc  
else if(temp[i1] data[cur]=temp[i1++]; o{*ay$vA]  
else dbS +  
data[cur]=temp[i2++]; /D_+{dtE  
} `]$?uQ  
} M+wt_ _vHf  
#a| L3zR5v  
} $jd<v1"o  
aTGdmj!  
改进后的归并排序: A=Dhod  
wFlvi=n/  
package org.rut.util.algorithm.support; e75UMWaeC  
< Fs-3(V+\  
import org.rut.util.algorithm.SortUtil; AGYm';z3  
7GZgu$'  
/** BpO9As 1um  
* @author treeroot w:o-klKXY  
* @since 2006-2-2 ,jy*1Hjd  
* @version 1.0 ;r=b|B9c  
*/ b'ml=a#i 0  
public class ImprovedMergeSort implements SortUtil.Sort { V 'X;jC  
:L0/V~D  
private static final int THRESHOLD = 10; Lc<eRVNd,  
+Ra3bjl  
/* 8_d -81Dd  
* (non-Javadoc) 1Q}mf!Y  
* %HtuR2#ca  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +TeFt5[)h  
*/ Fk^3a'/4KJ  
public void sort(int[] data) { lEPAP|~uw  
int[] temp=new int[data.length]; 92dF`sv  
mergeSort(data,temp,0,data.length-1); 3Dm8[o$Z  
} \'19BAm'  
g"Q h]:  
private void mergeSort(int[] data, int[] temp, int l, int r) { v_PdOp[ k  
int i, j, k; lf>nbvp  
int mid = (l + r) / 2; BzpP7ZWV  
if (l == r) A1cb"N^  
return; =QV ::/  
if ((mid - l) >= THRESHOLD) &[?CTZ  
mergeSort(data, temp, l, mid); 0MIUI<;j  
else |'HLz=5\  
insertSort(data, l, mid - l + 1); AB.(CS=i  
if ((r - mid) > THRESHOLD) .g\6g~n  
mergeSort(data, temp, mid + 1, r); ,D80/2U^  
else `PI(%N  
insertSort(data, mid + 1, r - mid); XeUC0K[D  
}bB` (B,m  
for (i = l; i <= mid; i++) { h3u1K>R)  
temp = data; Q |i9aE  
} `GQ{*_-  
for (j = 1; j <= r - mid; j++) { RE46k`44  
temp[r - j + 1] = data[j + mid]; 6R}j-1 <n  
} a0Oe:]mo\  
int a = temp[l]; NB8&   
int b = temp[r]; 1M%S gV-#  
for (i = l, j = r, k = l; k <= r; k++) { }4%/pOi:f  
if (a < b) {  W^g[L:s  
data[k] = temp[i++]; w,.qCpT$_  
a = temp; ySdN;d:q  
} else { `?s.\Dh  
data[k] = temp[j--]; }GHxG9!z  
b = temp[j]; US?Rr  
} ~el-*=<m  
} _JGs}aQ  
} j kn^Z":  
{^q)^<#JT  
/** (!K+P[g  
* @param data NVIWWX9?  
* @param l c^I0y!  
* @param i #] KgUc5B  
*/ 8IY19>4'5J  
private void insertSort(int[] data, int start, int len) { yOHXY&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0=U70nKr  
} 'Am-vhpm  
} rjojG59U>  
} 'u[%}S38  
}  ;\b@)E}  
L&w.j0fq  
堆排序: "-i#BjZl/  
yFIIX=NC  
package org.rut.util.algorithm.support; /Ic[N&  
EO"C8z'al  
import org.rut.util.algorithm.SortUtil; p6 xPheD  
v"1Po_`  
/** =fG:A(v%}  
* @author treeroot J=WB6zi  
* @since 2006-2-2 2:v<qX  
* @version 1.0 4L:>4X[T  
*/ [ x>  
public class HeapSort implements SortUtil.Sort{ z?.(3oLT  
^)\+l%M  
/* (non-Javadoc) P2k7M(I_&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CJ w$j`k  
*/ L`K;IV%;  
public void sort(int[] data) { VQ |^   
MaxHeap h=new MaxHeap(); p!"(s/=  
h.init(data); 9R]](g#  
for(int i=0;i h.remove(); E8[XG2ye  
System.arraycopy(h.queue,1,data,0,data.length); +g\;bLT  
} o'UHStk  
ubGs/Vzye  
private static class MaxHeap{ cx(2jk}6  
Gbb \h  
void init(int[] data){ INNAYQ  
this.queue=new int[data.length+1]; f]_mzF=&  
for(int i=0;i queue[++size]=data; w7Dt1axB  
fixUp(size); G%hO\EO  
} wly>H]i'  
} Q-('5a19J  
:1<~}*B@{  
private int size=0; M9"Sgb`g  
3VP$x@AV  
private int[] queue; J|j;g!fK  
?JqjYI{$  
public int get() { E$S`6+x`:a  
return queue[1]; |`]oc,1h@  
} |cTpw1%I~  
' iQ9hQjD  
public void remove() { _X%Dw  
SortUtil.swap(queue,1,size--); yq*JdTF  
fixDown(1); fi=?n{e'  
} 9)ea.Gu  
file://fixdown <aVfJd/fT  
private void fixDown(int k) { k=uZ=tUft*  
int j; sv=^k(d3  
while ((j = k << 1) <= size) { WN0c %kz=  
if (j < size %26amp;%26amp; queue[j] j++; ;QPy:x3  
if (queue[k]>queue[j]) file://不用交换 f-+.;`H)T  
break; )Qr6/c 8}  
SortUtil.swap(queue,j,k); euZ(}+N&  
k = j; ?`. XK}  
} zD_H yGf  
} =~,l4g\  
private void fixUp(int k) { n6cq\@~A  
while (k > 1) { &>=#w"skb6  
int j = k >> 1; BJIQ zn3  
if (queue[j]>queue[k]) JK^[{1 JI  
break; tp+=0k2i  
SortUtil.swap(queue,j,k); )0|):g   
k = j; pTET%)3  
} j`9Nwa  
} BTs0o&}e  
"_)|8|gN  
} `vEqj v  
b`]M|C [5  
} *<dHqK`?C  
u+DX$#-n!]  
SortUtil: j |td,82.  
5&(3A|P2  
package org.rut.util.algorithm; \3j)>u,r  
3U o]> BG  
import org.rut.util.algorithm.support.BubbleSort; ZY Kd  
import org.rut.util.algorithm.support.HeapSort; G+C} <S}  
import org.rut.util.algorithm.support.ImprovedMergeSort; n_;S2KM  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,aO@.<"  
import org.rut.util.algorithm.support.InsertSort; y< ud('D  
import org.rut.util.algorithm.support.MergeSort; msG3 ~@q  
import org.rut.util.algorithm.support.QuickSort; j 0?>w{e  
import org.rut.util.algorithm.support.SelectionSort; ?Ccw4]YO,=  
import org.rut.util.algorithm.support.ShellSort; bX&e_Pd  
/s8/q2:  
/** MCd F!{  
* @author treeroot i* gKtjx  
* @since 2006-2-2 "aA_(Ydzj  
* @version 1.0 <?4cWp|i  
*/ -pX|U~a[  
public class SortUtil { jJ-d/"(  
public final static int INSERT = 1; V0T<eH<  
public final static int BUBBLE = 2; oT!/J  
public final static int SELECTION = 3; :p$EiR  
public final static int SHELL = 4; D"`[6EN[  
public final static int QUICK = 5; NxB+?  
public final static int IMPROVED_QUICK = 6; vnVZJ}]w\  
public final static int MERGE = 7; -fQX4'3R  
public final static int IMPROVED_MERGE = 8; 4@/z  
public final static int HEAP = 9; $owb3g(%4  
%09*l%,;  
public static void sort(int[] data) { `{L{wJ:&a  
sort(data, IMPROVED_QUICK); ,5:![  
} ' 3VqkQ4  
private static String[] name={ PC0HH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O(Td:Zdp  
}; '2xcce#  
<vLdBfw&N  
private static Sort[] impl=new Sort[]{ i :EO(`  
new InsertSort(), c _p[yS  
new BubbleSort(), o oDdV >  
new SelectionSort(), A`Q >h{  
new ShellSort(), }bCK  
new QuickSort(), uDI}R]8~  
new ImprovedQuickSort(), ex=)H%_|  
new MergeSort(), QA!#s\  
new ImprovedMergeSort(), ~}9Bn)@  
new HeapSort() c-`37. J  
}; r8F{A6iN  
h-,?a_  
public static String toString(int algorithm){ b_ZNI0Hp@  
return name[algorithm-1]; Seg#s.  
} k!9=  
" Ac~2<V  
public static void sort(int[] data, int algorithm) { ;9vIa7L&  
impl[algorithm-1].sort(data); qkiJ HT  
} k_BSY=$e*D  
3Mxz_~  
public static interface Sort { q>P[nz%  
public void sort(int[] data); S_j1=6 #^  
} IY0 3"  
!6{J q]  
public static void swap(int[] data, int i, int j) { j7,13,t1-  
int temp = data; ' #KA+?@  
data = data[j]; 7\f{'KL  
data[j] = temp; gINwvzW{  
} "B~WcC  
} _Ws#UL+Nq  
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