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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。 . @@an;C  
插入排序: Y17hOKc`  
8&%Cy'TIz4  
package org.rut.util.algorithm.support; JRXRi*@  
ZNi +Aw$u  
import org.rut.util.algorithm.SortUtil; teAukE=}  
/** SyAo, )j  
* @author treeroot E4=qh1d  
* @since 2006-2-2 n&$/Q$d&  
* @version 1.0 z?4=h Sy  
*/ Ls1B \Aw_  
public class InsertSort implements SortUtil.Sort{ _B3zRO  
TKo<~?  
/* (non-Javadoc) #ra*f~G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L!,d"wuD  
*/ 2 L:$aZ  
public void sort(int[] data) { NEw $q4  
int temp; ~cIl$b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "kU]  
} ytiyF2Kp  
} z3W3=@  
} n}JPYu  
FIS "Z(  
} l[oe*aYN7  
Lc|{aN  
冒泡排序: P 6.!3%y  
TcJ$[  
package org.rut.util.algorithm.support; tb,9a!?  
P\AqpQv  
import org.rut.util.algorithm.SortUtil; q(Hip<6p  
O[FZq47  
/** >I^9:Q  
* @author treeroot b# u8\H  
* @since 2006-2-2 Z/g]o#  
* @version 1.0 >?I/;R.-  
*/ 5$%XvM  
public class BubbleSort implements SortUtil.Sort{ doR4nRl9  
'#q4Bc1  
/* (non-Javadoc) bY)#v?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 45<y{8  
*/ DkdL#sV  
public void sort(int[] data) { 'mE^5K  
int temp; cDIBDC  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6e.[,-eU  
if(data[j] SortUtil.swap(data,j,j-1); UFw](%=&M  
} bq NP#C  
} ,EI:gLH  
} #K4*6LI  
} kAo.C Nj7  
o_$&XNC_  
} ($8t%jVWJJ  
{[W(a<%bXm  
选择排序: ]Lm'RlV  
C6]OAUXy:F  
package org.rut.util.algorithm.support; $gvr -~  
?:uNN  
import org.rut.util.algorithm.SortUtil; ),` 8eQC  
v+6e;xl8  
/**  z)w-N  
* @author treeroot : G=FiC  
* @since 2006-2-2 t7*#[x)a  
* @version 1.0 .Y\EE;8%  
*/ ~*-qX$gr  
public class SelectionSort implements SortUtil.Sort { '!Wvqs  
4TZ cc|B5  
/* x+7*ADKb  
* (non-Javadoc) T$P-<s  
* {v,)G)obWw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y3rt5\!  
*/ E ]f)Os$  
public void sort(int[] data) { 5k$vlC#[H  
int temp; B<,YPS8w  
for (int i = 0; i < data.length; i++) { N'?u1P4G  
int lowIndex = i; bK*~ol  
for (int j = data.length - 1; j > i; j--) { ^RNOcM|  
if (data[j] < data[lowIndex]) { S|AjL Ng#  
lowIndex = j; O|'1B>X  
} }r3~rG<D71  
} E!mmLVa9  
SortUtil.swap(data,i,lowIndex); J=H)JH3  
} eB]R3j{  
} bRsTBp;R`I  
c^9tYNn  
} Mu&x_&|  
N$#\Xdo  
Shell排序: 5/@UVY9_  
S v`qB'e2  
package org.rut.util.algorithm.support; MbA\pG'T  
4 b,N8  
import org.rut.util.algorithm.SortUtil; 2?DRLF]  
{x@|VuL=  
/** 5o 0Ch  
* @author treeroot kbI/4IRW  
* @since 2006-2-2 NX,-;v  
* @version 1.0 qLK?%?.N<  
*/ Jp~zX lu  
public class ShellSort implements SortUtil.Sort{ X.V[0$.;  
L:R<e#kgS  
/* (non-Javadoc) \#Up|u:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,D=fFpn  
*/ VR0=SE  
public void sort(int[] data) { 1cC1*c0Z  
for(int i=data.length/2;i>2;i/=2){ c0rk<V%5+  
for(int j=0;j insertSort(data,j,i); m9":{JI.w  
} Im?LIgt$  
} 'EhBRU%  
insertSort(data,0,1); L%h/OD  
} >I'% !E;  
i.y)mcB4  
/** l=={pb  
* @param data 3z8C  
* @param j EL D!{bMT  
* @param i JAjku6  
*/ \ |!\V  
private void insertSort(int[] data, int start, int inc) { K$[$4 dX]  
int temp; U[\Vj_?(I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); z5 m>H;P  
} wkb$^mU  
} A9:NKY{z  
} uGVy6,  
Da1aI]{I  
} 4. qtp`  
i$^ZTb^  
快速排序: k%81f'H  
'7 )"  
package org.rut.util.algorithm.support; mUP.rb6  
`V!>J 1x  
import org.rut.util.algorithm.SortUtil; s8mr''  
0L-!! c3  
/** 5iX! lAFJ  
* @author treeroot cP>o+-)  
* @since 2006-2-2 m$2<`C=  
* @version 1.0 q1{H~VSn"  
*/ ^{yk[tHpS  
public class QuickSort implements SortUtil.Sort{ {2KFD\i\  
%D=]ZV](  
/* (non-Javadoc) Dr#c)P~Wd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Ogv9  
*/ K_&MoyJJ9f  
public void sort(int[] data) { 9S7A!AKE  
quickSort(data,0,data.length-1); h2q/mi5{  
} >Aq:K^D/3F  
private void quickSort(int[] data,int i,int j){ zJN7<sv  
int pivotIndex=(i+j)/2; BlC<`2S  
file://swap xL "!~dN  
SortUtil.swap(data,pivotIndex,j); >SmV74[s2  
C NrII sJ  
int k=partition(data,i-1,j,data[j]); []pN$]+c  
SortUtil.swap(data,k,j); #f,y&\Xmf  
if((k-i)>1) quickSort(data,i,k-1); \2v"YVWw  
if((j-k)>1) quickSort(data,k+1,j); nv/[I,nw  
Gh( A%x)  
} t ?eH'*>  
/** @%ECj)u`O  
* @param data f'Mop= .  
* @param i ,_ 2x{0w:>  
* @param j N_gD>6I  
* @return Bi%x`4Lf  
*/ &#{dWObh  
private int partition(int[] data, int l, int r,int pivot) { r6.d s^  
do{ ~/#1G.H  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); mTDVlw0dh  
SortUtil.swap(data,l,r); e@<?zS6  
} /n,a?Ft^N)  
while(l SortUtil.swap(data,l,r); 6" B%)0  
return l; 5<YzalNf  
} V9%aBkf8w  
?&+9WJ<M  
} :!TI K1  
FY3IUG  
改进后的快速排序: 5"KlRuv%  
2umv|]n+l|  
package org.rut.util.algorithm.support; #1nJ(-D+  
6p;m\  
import org.rut.util.algorithm.SortUtil; }j {!-&  
pox, Im  
/** t#E}NR  
* @author treeroot eVh - _  
* @since 2006-2-2 Sus;(3EX  
* @version 1.0 bZwnaM4"F  
*/ ~l E _L1-c  
public class ImprovedQuickSort implements SortUtil.Sort { b{7E;KyY,  
IVxWxM*N<  
private static int MAX_STACK_SIZE=4096; V|D] M{O  
private static int THRESHOLD=10; X@A1#z+s0]  
/* (non-Javadoc) Jf;?XP]z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ){;02^tX  
*/ kL*0M<0 (  
public void sort(int[] data) { qdD)e$XW,  
int[] stack=new int[MAX_STACK_SIZE]; 1 OaXo!  
[\z/Lbn ,.  
int top=-1; fPa9ofU/kr  
int pivot; ?}QH=&=^  
int pivotIndex,l,r; DvXHK  
#/S {6c  
stack[++top]=0; gXFWxT8S  
stack[++top]=data.length-1; cI0 ]}S  
d9^E.8p$  
while(top>0){ 30j|D3-  
int j=stack[top--]; ?=Pd  
int i=stack[top--]; ,El!fgL  
2\D8.nQr  
pivotIndex=(i+j)/2; ;t#]2<d*  
pivot=data[pivotIndex]; LJlZ^kh  
aBuoHdg;  
SortUtil.swap(data,pivotIndex,j); V&{MQWy  
rJyCw+N0  
file://partition >h~IfZU1  
l=i-1; je,}_:7  
r=j; = "ts`>  
do{ +a@GHx 4-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %|W.^q  
SortUtil.swap(data,l,r); l,|%7-  
} a6xj\w  
while(l SortUtil.swap(data,l,r); 7*+]wEs  
SortUtil.swap(data,l,j); >p\e 0n  
)(M7lq.e7  
if((l-i)>THRESHOLD){ %:v`EjRD0  
stack[++top]=i; gxNL_(A  
stack[++top]=l-1; ~#K@ADYr  
} gk0.zz([  
if((j-l)>THRESHOLD){ 6aft$A}XnD  
stack[++top]=l+1; _o3e]{  
stack[++top]=j; &?,U_)x/  
} A;XOT6jv?  
El_Qk[X|A  
} -NGK@Yk22  
file://new InsertSort().sort(data); N3BL3:@O  
insertSort(data); 8,T4lb<<  
} IIFMYl gF  
/** Y,S\2or$  
* @param data ZfAzc6J?\  
*/ 6]cryf&b  
private void insertSort(int[] data) { U%<rn(xWXD  
int temp; }j5 a[L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t0&@h\K  
} SuBeNA[&  
} IXLO>>`  
} +FG$x/\*0  
C]u',9,  
} ;Y9=!.Ak0y  
ff? t[GS  
归并排序: Rg&- 0b  
)}v 3q6?_  
package org.rut.util.algorithm.support; R9vT[{!i  
$"JpFT  
import org.rut.util.algorithm.SortUtil; +!t}  
}CL"S_>1  
/** &jA\hg#9  
* @author treeroot *hhmTc#  
* @since 2006-2-2 /hWd/H]  
* @version 1.0 !\ND(  
*/ V)M1YZV{  
public class MergeSort implements SortUtil.Sort{ 5X.ebd;PT  
+]xFoH  
/* (non-Javadoc) %hS|68pN6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e'*HS7g  
*/ Y qdWctUY  
public void sort(int[] data) { jjs&`Fy,  
int[] temp=new int[data.length]; G`h+l<  
mergeSort(data,temp,0,data.length-1); 'vV$]/wBF  
} jF ^5}5U  
od<b!4k~s  
private void mergeSort(int[] data,int[] temp,int l,int r){  cc=gCE  
int mid=(l+r)/2; l U]un&[N  
if(l==r) return ; rsNf$v-*  
mergeSort(data,temp,l,mid); J:dof:q  
mergeSort(data,temp,mid+1,r); or*HC&c7  
for(int i=l;i<=r;i++){ =v~1qWX  
temp=data; 8ip7^  
} 5MTgK=c  
int i1=l; )+y G+  
int i2=mid+1; D>L2o88  
for(int cur=l;cur<=r;cur++){ A?!I/|E^;  
if(i1==mid+1) 7Ey#u4Q  
data[cur]=temp[i2++]; !eR3@%4  
else if(i2>r) S0/usC[r  
data[cur]=temp[i1++]; \YJy#2K  
else if(temp[i1] data[cur]=temp[i1++]; P,pnga3Wu  
else H!IshZfktn  
data[cur]=temp[i2++]; 2C^B_FUg|]  
} LE^G&<!  
} [s1pM1x  
0'Z\O   
} SkNre$>t{  
L6P1L)  
改进后的归并排序: 1^J`1  
5`[n8mU  
package org.rut.util.algorithm.support; ^)yTBn,  
G* b2,9&F  
import org.rut.util.algorithm.SortUtil; yBe d kj  
we7c`1E  
/** .aOnGp  
* @author treeroot {i~8 :  
* @since 2006-2-2 )vB2!H/  
* @version 1.0 y %8op:'  
*/ H5>hx {  
public class ImprovedMergeSort implements SortUtil.Sort { / jTT5  
:6kjEI  
private static final int THRESHOLD = 10; h~Q)Uy5N(D  
>-< 8N-@"n  
/* R>@uY( >dJ  
* (non-Javadoc) WP **a Bp  
* Q/>L_S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2GmpCy`L"  
*/ mY!iu(R1  
public void sort(int[] data) { ?dZt[vAMn  
int[] temp=new int[data.length]; 9 t n!t  
mergeSort(data,temp,0,data.length-1); ;,'igdold  
} X~.f7Ao[  
~3h-jK?  
private void mergeSort(int[] data, int[] temp, int l, int r) { {NM+Oj,~'  
int i, j, k; KGHq rc  
int mid = (l + r) / 2; `em9T oJV  
if (l == r) SF ]@|  
return; 1M3% fW  
if ((mid - l) >= THRESHOLD) U_yE& 6 T  
mergeSort(data, temp, l, mid); 7EhN u@5-  
else N)8HR9[!  
insertSort(data, l, mid - l + 1); 8G%yB}pa  
if ((r - mid) > THRESHOLD) )x,8D ~p'  
mergeSort(data, temp, mid + 1, r); O{z}8&oR:  
else n";02?@F  
insertSort(data, mid + 1, r - mid); ,"}Rg1\4t  
*~$~yM/~3U  
for (i = l; i <= mid; i++) { { >{B`e`$  
temp = data; ) iQ   
} 5 x2Ay=s  
for (j = 1; j <= r - mid; j++) { ~q +[<xR\  
temp[r - j + 1] = data[j + mid]; *v%rMU7,  
} L *[K>iW  
int a = temp[l]; wRNroQ  
int b = temp[r]; =dP{Gh  
for (i = l, j = r, k = l; k <= r; k++) { c>bq%}  
if (a < b) { TB6m0qX(  
data[k] = temp[i++]; >"3>s%  
a = temp; #S g\q8(O  
} else { L?&'xzt B  
data[k] = temp[j--]; ni&*E~a  
b = temp[j]; 6X g]/FD  
} }*U[>Z-eO  
} 2Nc>6  
} -5G)?J/*  
96Wp!]*  
/** =;~I_)Pg1  
* @param data 1{"llD  
* @param l ?z-}>$I;  
* @param i ^>4o$}  
*/ OvL\u{(<F  
private void insertSort(int[] data, int start, int len) { %rKK[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); o@>? *=  
} tS# `.F~y  
} 5 +9 Ze9  
} :bU(S<%M  
} Ac k}QzXO  
f5RE9%.#~  
堆排序: u?+bW-D'd  
 Wa/g`}  
package org.rut.util.algorithm.support; 3M*Bwt;F_  
}w-wSkl1  
import org.rut.util.algorithm.SortUtil; 4_M>OD/"  
$9 p!Y}  
/** &(rWwOo6  
* @author treeroot ri~<~oB 2:  
* @since 2006-2-2 1r[@(c0  
* @version 1.0 m8]?hJY 3l  
*/ 92W&x'  
public class HeapSort implements SortUtil.Sort{ z T%U!jqI  
g{s'GyV8t  
/* (non-Javadoc) FXKF\1`( H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "HMP$)d  
*/ G*[P <<je_  
public void sort(int[] data) { $e%2t^ i.g  
MaxHeap h=new MaxHeap(); |V[9}E: h  
h.init(data); [K~]&  
for(int i=0;i h.remove(); 3-s}6<0v1  
System.arraycopy(h.queue,1,data,0,data.length); 9W*+SlH@ !  
} 6Q|k7*,B  
$*[{J+t_  
private static class MaxHeap{ dBC bL.!  
)+I.|5g  
void init(int[] data){ ZBD;a;wx  
this.queue=new int[data.length+1]; R_P}~l  
for(int i=0;i queue[++size]=data; &Jc_Fc(M  
fixUp(size); -XoPia2  
} pI`?(5iK6|  
} ~.Ik#At  
G* %t'jX9  
private int size=0; |Q~cX!;  
6bc3 37b  
private int[] queue; 1a0kfM$  
UsVMoX^  
public int get() { #eP LOR&q  
return queue[1];  2B~wHv  
} l kIn%=Z  
z5\;OLJS,  
public void remove() { `XTh1Z\  
SortUtil.swap(queue,1,size--); Upl6:xYrG  
fixDown(1); |rRO@18dA  
} OY-w?'p?W  
file://fixdown 6+rlXmd  
private void fixDown(int k) { F^aR+m  
int j; 4] > ]-b  
while ((j = k << 1) <= size) { |C \}P  
if (j < size %26amp;%26amp; queue[j] j++; 4 fV3Ear=j  
if (queue[k]>queue[j]) file://不用交换 $ 0|a;  
break; U09.Y  
SortUtil.swap(queue,j,k); q=HHNjj8  
k = j; +H/jK@  
} 7"X>?@  
}  n]W_e  
private void fixUp(int k) { K?x,T8<aW  
while (k > 1) { SM0M%  
int j = k >> 1; 5`/@N{e  
if (queue[j]>queue[k]) .@ C{3$,VG  
break; UUo;`rkT  
SortUtil.swap(queue,j,k); ',7??Q7j&v  
k = j; ?VU(Pq*`  
} oj,lz?  
} FX <b:#  
}!#gu3  
} W" "*ASi  
<3PL@orO  
} u),Qa=Wp  
TjK{9A  
SortUtil: YKZrEP 4^  
7)rWw<mY  
package org.rut.util.algorithm; l7(!`NPbC  
!33#. @[  
import org.rut.util.algorithm.support.BubbleSort; gCd`pi 8  
import org.rut.util.algorithm.support.HeapSort; bSwWszd~  
import org.rut.util.algorithm.support.ImprovedMergeSort; ({0)@+V8  
import org.rut.util.algorithm.support.ImprovedQuickSort; v <\A%  
import org.rut.util.algorithm.support.InsertSort; " }gVAAvc7  
import org.rut.util.algorithm.support.MergeSort; q}uHFp/J  
import org.rut.util.algorithm.support.QuickSort; W_O)~u8  
import org.rut.util.algorithm.support.SelectionSort; a\uie$"cr]  
import org.rut.util.algorithm.support.ShellSort; /T^ JS  
F,Xo|jjj  
/** Hk_y/97OO  
* @author treeroot v}G]X Z8  
* @since 2006-2-2 z7.|fE)<6  
* @version 1.0 _?7#MWe&  
*/ C9n}6Er=,  
public class SortUtil { :A46~UA!$  
public final static int INSERT = 1; :^ i9]  
public final static int BUBBLE = 2; pqM~l&  
public final static int SELECTION = 3; jkAAqRR  
public final static int SHELL = 4; d<w~jP\  
public final static int QUICK = 5; (fD ;g9  
public final static int IMPROVED_QUICK = 6; 'J*<iA*W  
public final static int MERGE = 7; BIaDY<j90  
public final static int IMPROVED_MERGE = 8; h.rD}N\L  
public final static int HEAP = 9; I0AJY )R  
fqz28aHh  
public static void sort(int[] data) { Oh.ZPG=  
sort(data, IMPROVED_QUICK); *x~xWg9^  
} 1RLY $M  
private static String[] name={ WlB' YL-`g  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;P&y,:<m:  
}; $ZPX]2D4B#  
;wiao(t>4N  
private static Sort[] impl=new Sort[]{ `?*%$>W#"  
new InsertSort(), I|oT0y &  
new BubbleSort(), V=I"-k}RL  
new SelectionSort(), <q)4la  
new ShellSort(), E9j+o y  
new QuickSort(), T&Xl'=/  
new ImprovedQuickSort(), >>l`,+y  
new MergeSort(),  uD_v!  
new ImprovedMergeSort(), %x; x_  
new HeapSort() =M6[URZ  
}; r#PMy$7L  
_eSd nHWx  
public static String toString(int algorithm){ LVIAF0kX  
return name[algorithm-1]; U8#xgz@  
} &ej8mq"\  
3>ex5  
public static void sort(int[] data, int algorithm) { Z.L?1V8Q1  
impl[algorithm-1].sort(data); foF19_2 ,  
} 4!62/df  
Gz I~TWc+G  
public static interface Sort { vq*Q.0M+  
public void sort(int[] data); djQv[Vc {  
} ]e:/"   
E! /[gZ  
public static void swap(int[] data, int i, int j) { QR?yG+VU  
int temp = data; )CPM7>  
data = data[j]; idc`p?XP  
data[j] = temp; _Jz8{` "  
} aeyNdMk -  
} D'<VYl"/  
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