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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。 ]}S9KP  
插入排序: 8~!h8bkC  
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package org.rut.util.algorithm.support; aA%x9\Y  
PMiu "  
import org.rut.util.algorithm.SortUtil; sj+ )   
/** :3se/4y}  
* @author treeroot ~urk Uz  
* @since 2006-2-2 uI)z4Z  
* @version 1.0 l7WZ" 6d  
*/ T_\hhP~  
public class InsertSort implements SortUtil.Sort{ t}K8{ V  
E)'T;%  
/* (non-Javadoc) .^- I<4.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q>z (!'dw  
*/ uYE"O UNWL  
public void sort(int[] data) { F(U(b_DPM  
int temp; gYpFF=7j<@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H_iQR9Ak7  
} ?Rh[S  
} 9)F$){G]vs  
} vN6)Szim  
Ch=jt*0  
} [MAvU?;  
}Zp[f6^Q  
冒泡排序: ![[:Z  
gE23C*!'&:  
package org.rut.util.algorithm.support; ?+]   
~:b5UIAk  
import org.rut.util.algorithm.SortUtil; ;MO,HdP;  
j3o?B  
/** Z%{`j!!p  
* @author treeroot  o^d  
* @since 2006-2-2 7%|HtBXv^  
* @version 1.0 gp\o|igT  
*/ J32"Ytdo<  
public class BubbleSort implements SortUtil.Sort{ JGlp7wro  
#%/0a  
/* (non-Javadoc) Gbb*p+ (  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YB9)v5Nz(  
*/ AHplvksb  
public void sort(int[] data) { `$] ZT>&  
int temp; ib(4Y%U6~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0[-@<w ^j  
if(data[j] SortUtil.swap(data,j,j-1); 9'O@8KB_  
} za5E{<0  
} IP#qT `=}  
} Cyp%E5b7  
} Ye\ &_w"  
 LII4sf]  
} XTq+  9  
iB*1Yy0DC  
选择排序: rW2   
FQB6` M  
package org.rut.util.algorithm.support; TdrRg''@  
\~:_ h#bW  
import org.rut.util.algorithm.SortUtil; #PMi6q~Z  
Nf9$q| %!  
/** @=6$ImU  
* @author treeroot tf{o=X.)  
* @since 2006-2-2  rUBc5@|  
* @version 1.0 TxmKmZ u  
*/ bSk)GZyH\d  
public class SelectionSort implements SortUtil.Sort { A~ wVY  
Dp;6CGYl?  
/* NU%W9jQYS  
* (non-Javadoc) 3\?yjL^  
* z?g\w6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ft 2u&Rtx  
*/ *|.-y->  
public void sort(int[] data) { 9:CM#N~?o  
int temp; hWiBLip,z  
for (int i = 0; i < data.length; i++) { [_3L  
int lowIndex = i; @l&>C#K\  
for (int j = data.length - 1; j > i; j--) { MOu=  
if (data[j] < data[lowIndex]) { F'JceU  
lowIndex = j; 9Z.W R-}  
} ;c0z6E /  
} ),U>AiF]  
SortUtil.swap(data,i,lowIndex); %8! }" Xa  
} Qg gx:  
} ??? ;H  
u*<knZ~ty  
} 8Rd*`]@[pk  
eGlPi|  
Shell排序: 69EdMuf  
76 RFu@k  
package org.rut.util.algorithm.support; >jg"y  
M%1wT9  
import org.rut.util.algorithm.SortUtil; y[I)hSD=  
>Ef{e6  
/** T8-,t];i  
* @author treeroot 4Y4QR[>IU3  
* @since 2006-2-2 #@K %Mx  
* @version 1.0 &bT \4  
*/ <~-cp61z;  
public class ShellSort implements SortUtil.Sort{ Q*8=^[x  
}(Dt,F`  
/* (non-Javadoc) >sm<$'vZ/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ig"Qw vR  
*/ 3.<E{E!F  
public void sort(int[] data) { xHi.N*~D  
for(int i=data.length/2;i>2;i/=2){ !t!\b9=  
for(int j=0;j insertSort(data,j,i); SH/^qDT'  
} (|.rEaTA[1  
} db5@+_  
insertSort(data,0,1); .GOF0puiM  
} DNy 6Kw  
VJ()sbl{k  
/** !OL[1_-4|K  
* @param data J0O wzO  
* @param j yZw5?{g@  
* @param i |%c"Avc  
*/ F<LRo}j"9Q  
private void insertSort(int[] data, int start, int inc) { O[<0\  
int temp; P QA}_o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^QTtCt^:  
}  Va3/#is'  
} &_ W~d0  
} IAzi:ct  
+jN%w{^=  
} +X|^ ~)tMJ  
1&#qq*{  
快速排序: 8\B]!  
wC`+^>WFo  
package org.rut.util.algorithm.support; G"D=ozr  
u;3wg`e  
import org.rut.util.algorithm.SortUtil; r0(*]K:.  
$fFh4O4  
/** ds;c\x  
* @author treeroot ^< wn  
* @since 2006-2-2  G%5ZG$as  
* @version 1.0 iTIYq0u|#R  
*/ lNba[;_  
public class QuickSort implements SortUtil.Sort{ iM(Q-%HP_  
M~,N~ N1  
/* (non-Javadoc) dBNx2T}_0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DuI>z?bS  
*/ 20?@t.aMp  
public void sort(int[] data) { Nn='9s9F?}  
quickSort(data,0,data.length-1); H?cJ'Q, 5  
} )zK@@E  
private void quickSort(int[] data,int i,int j){ gnN"6r1  
int pivotIndex=(i+j)/2; ,Vfjt=6]}  
file://swap #6*20w_u  
SortUtil.swap(data,pivotIndex,j); l?)!^}Qc  
&(X67  
int k=partition(data,i-1,j,data[j]); e6gLYhf&  
SortUtil.swap(data,k,j); d3"QCl  
if((k-i)>1) quickSort(data,i,k-1); V_/.]zQA  
if((j-k)>1) quickSort(data,k+1,j); TXo`P_SE  
3 nnoXc'  
} _"[Ls?tRX  
/** ve^gzE$<I  
* @param data ],s{%a5wC  
* @param i qNi`OVh&  
* @param j c<,R,D R  
* @return 7j8lhrM}^  
*/ +E-CsNAZ*"  
private int partition(int[] data, int l, int r,int pivot) { 0Ua&_D"  
do{ o3JSh=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;z T3Fv\  
SortUtil.swap(data,l,r);  ZvwU  
} Ey=ymf.}  
while(l SortUtil.swap(data,l,r); i>O8q%BnJ  
return l; 8]D0)  
} q_cP<2`@V  
![9$ru  
} V1haAP[#  
9yz@hdG  
改进后的快速排序: ]>B4  
S)?N6sz%  
package org.rut.util.algorithm.support; ?|~KF:,#}  
G=]ox*BY  
import org.rut.util.algorithm.SortUtil; b]  
Xdf4%/Op  
/** bYO['ORr @  
* @author treeroot k~F;G=P  
* @since 2006-2-2 OG9 '[o`8  
* @version 1.0 g(9kc<`3'D  
*/ i+F*vTM2,  
public class ImprovedQuickSort implements SortUtil.Sort { F ^Bk  @  
%o 5'M^U  
private static int MAX_STACK_SIZE=4096; J/IRCjQ}  
private static int THRESHOLD=10; e_"m\e#N  
/* (non-Javadoc) (%OZ `?`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zf&:@P{  
*/ uW [yNwM  
public void sort(int[] data) { !nq`Py MR  
int[] stack=new int[MAX_STACK_SIZE]; r.lHlHl  
TB-dV'w  
int top=-1; ltlo$`PR  
int pivot; ,,!P-kK$  
int pivotIndex,l,r; ~sZ$`t  
@v#,SF{  
stack[++top]=0; ~> N63I6  
stack[++top]=data.length-1; }LeS3\+UHl  
 "iR:KW@  
while(top>0){ G$2@N6  
int j=stack[top--]; 3H0B+F2XQ  
int i=stack[top--]; #4JLWg  
0ckmHv  
pivotIndex=(i+j)/2; ]-9w'K d  
pivot=data[pivotIndex]; YYT#{>&  
D6H?*4f]  
SortUtil.swap(data,pivotIndex,j); G|[{\  
uT'l.*W6i  
file://partition zhm0 J-g  
l=i-1; V[uSo$k+>  
r=j; zj(V\y&H  
do{ *c [^/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q2s0g*z  
SortUtil.swap(data,l,r); 0#DEh|?  
} :vX%0|  
while(l SortUtil.swap(data,l,r); Gw\..O  
SortUtil.swap(data,l,j); vzFp Xdt  
_Z!@#y@j  
if((l-i)>THRESHOLD){ /aMOZ=,q}  
stack[++top]=i; #4b]j".P!n  
stack[++top]=l-1; fBctG~CJH  
} oda,  
if((j-l)>THRESHOLD){ * m^\&  
stack[++top]=l+1; D[#V  
stack[++top]=j; `:;q4zij;  
} [!yA#{xl,  
QxdC[t$Lp  
} !{ (Bc8 hT  
file://new InsertSort().sort(data); ,aLwOmO  
insertSort(data); 5.oIyC^Ik  
} $\Y&2&1s  
/** (or"5}\6-  
* @param data 4|E^ #C  
*/ bY=[ USgps  
private void insertSort(int[] data) { QcW8A ,\q  
int temp; {\(MMTQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); GaG>0 x   
} ,d,2Q  
} Mh4MaLw  
} %:d7Ts&?Z  
r O$pj~!|Q  
} (+epRC  
P .m@|w&.K  
归并排序: T5."3i  
$vfgYl4q  
package org.rut.util.algorithm.support; <3x%-m+p4  
jRg gj`o  
import org.rut.util.algorithm.SortUtil; `a4&_`E,p  
{g<D:"Q  
/** 3W%6n-*u  
* @author treeroot Iz09O:ER  
* @since 2006-2-2 |(z{)yWbC[  
* @version 1.0 vTO9XHc E  
*/ gmRc4o  
public class MergeSort implements SortUtil.Sort{ UxTLr-db^  
D4!;*2t  
/* (non-Javadoc) }} =n]_f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iY,C0=n5Y  
*/ 112 WryS  
public void sort(int[] data) { FBNLszT{L  
int[] temp=new int[data.length]; *#mmk1`  
mergeSort(data,temp,0,data.length-1); 9j>2C  
} {5E8eQ  
p|-MwCeH  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5wx_ol}2  
int mid=(l+r)/2; ;`78h?`  
if(l==r) return ; .n]"vpWm[  
mergeSort(data,temp,l,mid); L/tpT?$fi  
mergeSort(data,temp,mid+1,r); /grTOf&  
for(int i=l;i<=r;i++){ @*YF!LdU{M  
temp=data; i< ^X z  
} F?Lt-a+  
int i1=l; )j36Y =r3  
int i2=mid+1; -qIi.]/f"9  
for(int cur=l;cur<=r;cur++){ `MOw\Z)..  
if(i1==mid+1) _`udd)Y2  
data[cur]=temp[i2++]; fs 'SCwx  
else if(i2>r) !cyrt<  
data[cur]=temp[i1++]; 1!v{#w{u7  
else if(temp[i1] data[cur]=temp[i1++]; 0Qt!w(  
else HoGYgye=  
data[cur]=temp[i2++]; PEf yHf7`  
} ,_e [P  
} JQ1MuE'  
N#T'}>ty  
} t eY@) F  
i/9iM\2  
改进后的归并排序: TJ"-cWpO1  
9eMle?pF  
package org.rut.util.algorithm.support; <L-F3Buu  
>O-KJZ'GV  
import org.rut.util.algorithm.SortUtil; \?xM% (:<Q  
HOP*QX8C%  
/** T8o](:B~  
* @author treeroot ^K?-+  
* @since 2006-2-2 MGR:IOTa  
* @version 1.0 kUd]8Ff!  
*/ h9)S&Sk{s  
public class ImprovedMergeSort implements SortUtil.Sort { B0@ Tz39=  
Bh3F4k2bg7  
private static final int THRESHOLD = 10; (P|[< Sd  
 q+L'h8  
/* h=#w< @  
* (non-Javadoc) N p"p*O  
* EF`}*7)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2ioHhcYdJU  
*/ <V&0GAZ  
public void sort(int[] data) { N:lfKI  
int[] temp=new int[data.length]; C"I jr=w  
mergeSort(data,temp,0,data.length-1); m+(Cl#+  
} =)Xj[NNRT  
{MgRi 7  
private void mergeSort(int[] data, int[] temp, int l, int r) { T8^9*]:@c!  
int i, j, k; (4YLUN&1O$  
int mid = (l + r) / 2; T9nb ~ P[  
if (l == r) !.vyzCJTzB  
return; 1/}H 0\9'  
if ((mid - l) >= THRESHOLD) ~5KcbGD~  
mergeSort(data, temp, l, mid); y!FO  
else 6<lo0PQ"Z  
insertSort(data, l, mid - l + 1); 2R/|/>T v  
if ((r - mid) > THRESHOLD) MmT/J1zM  
mergeSort(data, temp, mid + 1, r); d(q1 ?{zr4  
else f$lb.fy5  
insertSort(data, mid + 1, r - mid); Z [!"x&H]h  
p<fCGU  
for (i = l; i <= mid; i++) { sYKx 3[V/  
temp = data; "jL>P )  
} :iE b^F}  
for (j = 1; j <= r - mid; j++) { *ID=X!v  
temp[r - j + 1] = data[j + mid]; %Ig$:I(o  
} 6v)TCj/  
int a = temp[l]; rW?WdEg  
int b = temp[r]; x UdF.c  
for (i = l, j = r, k = l; k <= r; k++) { yv,FzF}7  
if (a < b) { f?5>V   
data[k] = temp[i++]; dFz"wvu` o  
a = temp; tguB@,O  
} else { $)M3fZ$#  
data[k] = temp[j--]; d( v"{N}  
b = temp[j]; k|;a"56F  
} Bu:%trlgV  
} 7b"fpB  
} 7H Har'=T  
#T7v]@K67  
/** Y% iqSY  
* @param data NW\CEJV  
* @param l u zZ|0  
* @param i *;A ;)'  
*/ !5*VBE\  
private void insertSort(int[] data, int start, int len) { "| nXR8t.r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6"-$WUlg  
} 7By7F:[b  
} {hS!IOM  
} Z '5itN^  
} !gX xM,R  
$?GggP d  
堆排序: $LXa]  
SAm%$v z%M  
package org.rut.util.algorithm.support; hUMG}<  
I!/32* s1t  
import org.rut.util.algorithm.SortUtil; LW1 4 'A}  
s$fM,l:!  
/** D6ZHvY8R  
* @author treeroot #BRIp(65-6  
* @since 2006-2-2 5EtR>Pc  
* @version 1.0 v H HgZ  
*/ X'OpR   
public class HeapSort implements SortUtil.Sort{ |V34;}\4  
9^*RK6  
/* (non-Javadoc) 8\{!*?9!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 24wDnDyh  
*/ {6u)EJ  
public void sort(int[] data) { W?Z>g"  
MaxHeap h=new MaxHeap(); 'o&d!  
h.init(data); - (s0f  
for(int i=0;i h.remove(); nlv,j&  
System.arraycopy(h.queue,1,data,0,data.length); $ #=d@Nw_  
} u7e$Mq  
gJ l^K  
private static class MaxHeap{ "%T~d[M  
,i_+Z |Ls  
void init(int[] data){ t jM9EP  
this.queue=new int[data.length+1]; "ku[b\W  
for(int i=0;i queue[++size]=data; Z=% j|xE_  
fixUp(size); -mJs0E*g  
} hWly8B[I  
} }+j B5z'w  
?e9tnk3  
private int size=0; O/eZ1YAC  
. vHHw@  
private int[] queue; %; &lVIU0  
\]>821r  
public int get() {  ]]p\1G  
return queue[1]; K+Him] b  
} +"84.PZ  
A^aY-V  
public void remove() { /3)\^Pof  
SortUtil.swap(queue,1,size--); 1XiA  
fixDown(1); "'5(UiSFz  
} %Za}q]?  
file://fixdown ?q6#M&|j/I  
private void fixDown(int k) { w,P@@Q E  
int j; M[I=N  
while ((j = k << 1) <= size) { XU7to]'K  
if (j < size %26amp;%26amp; queue[j] j++; +xuv+mo  
if (queue[k]>queue[j]) file://不用交换 ^S|qGu,G  
break; <?A4/18K  
SortUtil.swap(queue,j,k); Q7y' 0s  
k = j; M XW1 :  
} o"Xv)#g&  
} ?[#w*Am7  
private void fixUp(int k) { cPcH 8Vd  
while (k > 1) { ,LZA\XC  
int j = k >> 1; lAnOO5@8  
if (queue[j]>queue[k]) ;tQc{8O6L  
break; i7)J|(N2.  
SortUtil.swap(queue,j,k); i).Vu}W#S  
k = j; hV $Zr4'  
} ta95]|z"j  
} ,~7~ S"  
g]j&F65D  
} 6}Y==GP t  
>}wFePl  
} ~> )>hy)  
tRPIvq/  
SortUtil: ZeG4z({af  
0J?443A Y  
package org.rut.util.algorithm; }alq~jY  
>Ec;6V e  
import org.rut.util.algorithm.support.BubbleSort; xw{K,; WeO  
import org.rut.util.algorithm.support.HeapSort; 8nZ_.  
import org.rut.util.algorithm.support.ImprovedMergeSort; O!>#q4&]  
import org.rut.util.algorithm.support.ImprovedQuickSort; WS6Qp`c )e  
import org.rut.util.algorithm.support.InsertSort; ;a|%W4"  
import org.rut.util.algorithm.support.MergeSort; qbQdx Kk  
import org.rut.util.algorithm.support.QuickSort; w3i74C&0  
import org.rut.util.algorithm.support.SelectionSort; Iep_,o.Sk  
import org.rut.util.algorithm.support.ShellSort; ?6"U('y>n  
'hu'}F{  
/** F,as>X#  
* @author treeroot S*n5d>;  
* @since 2006-2-2 $$Tf1hIg  
* @version 1.0 Vk`Uz1*  
*/ o5Rv xGN  
public class SortUtil { qsEFf(9G  
public final static int INSERT = 1; 3u t<o-  
public final static int BUBBLE = 2; V(;T{HW&  
public final static int SELECTION = 3; 3rMi:*?  
public final static int SHELL = 4; QeT~s5 H  
public final static int QUICK = 5; cjtcEW  
public final static int IMPROVED_QUICK = 6; 16N |  
public final static int MERGE = 7; 6i+AJCkC  
public final static int IMPROVED_MERGE = 8; SnX)&>B  
public final static int HEAP = 9; IR3+BDE)>  
H`k YDp  
public static void sort(int[] data) { Ve9) ?=!  
sort(data, IMPROVED_QUICK); 7Ou]!AOhG  
} p<pGqW  
private static String[] name={ -`\n/"#X6i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" GB Vqc!d  
}; %p7onwKq0  
jZ"j_ =o@  
private static Sort[] impl=new Sort[]{ jq#`cay!  
new InsertSort(), j"Ew)6j  
new BubbleSort(), `c ^ ">L  
new SelectionSort(), EqBTN07dZS  
new ShellSort(), "5ISKuL  
new QuickSort(), uwi.Sg11  
new ImprovedQuickSort(), ?Vh#Gr  
new MergeSort(), JoG(Nk]  
new ImprovedMergeSort(), 1:yil9.\*  
new HeapSort() F_ -Xx"  
};  jrS$!cEo  
9:3`LY3wW  
public static String toString(int algorithm){ A!^r9?<  
return name[algorithm-1]; LEN=pqGJ.  
} pI.8Ip_r  
X,lhVT |  
public static void sort(int[] data, int algorithm) { x <aR|r  
impl[algorithm-1].sort(data); A"qDc  
} C]3:&dx9  
=j20A6gND  
public static interface Sort { YUTh*`1k<  
public void sort(int[] data); `SZ-o{  
} {wk#n.c  
B+jh|@-  
public static void swap(int[] data, int i, int j) { A42!%>PB  
int temp = data; u|\?6fz  
data = data[j]; $tc1 te  
data[j] = temp; MO| Dwuaf  
} " &`>+Yw  
} |+[Y_j  
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