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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。 HO;,Ya^l  
插入排序: ,y/N^^\  
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package org.rut.util.algorithm.support; xiQ;lE   
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import org.rut.util.algorithm.SortUtil; x<{)xP+|  
/** U`ELd:  
* @author treeroot }L|XZL_Jo#  
* @since 2006-2-2 WG3 .qLH%  
* @version 1.0 (1Ii86EP  
*/ S31+ j:"  
public class InsertSort implements SortUtil.Sort{ h:'wtn@l(  
44cy_  
/* (non-Javadoc) ;]SP~kG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8BwJWxBQ  
*/ [7SR2^uf<j  
public void sort(int[] data) { /<oBgFMoJ  
int temp; RDQK_Ef:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e5fzV.'5  
} yS(tF`H[  
} :[7.YQ   
} GFtE0IQ  
L<TL6  
} { Sn J  
SiSx ym  
冒泡排序: Oe}6jcb6&  
b n<}  
package org.rut.util.algorithm.support; {V~G r  
5R7DD5c[  
import org.rut.util.algorithm.SortUtil; S`GM#(t@_  
*Ldno`1O  
/** yTL<S'  
* @author treeroot NKb,>TO  
* @since 2006-2-2 Qz/1^xy  
* @version 1.0 eLAhfG  
*/ ~eHu +pv  
public class BubbleSort implements SortUtil.Sort{ `@|Kx\y4=j  
Smlf9h&  
/* (non-Javadoc) %QrpFE5 V5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) au 5qbP  
*/ }N<> z  
public void sort(int[] data) { G8_|w6  
int temp; Acib<Mi2!-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5 MD=o7O^  
if(data[j] SortUtil.swap(data,j,j-1); tB7g.)yZb  
} C!}9[X!7@:  
} u|]`gsFZ\  
} 'w5g s}1D  
} h*\/{$y  
eC41PQ3=1'  
} YE\s<$  
5Mq7l$]h$  
选择排序: Ykd< }KE>  
=HkB>w)h  
package org.rut.util.algorithm.support; <v =T31aS  
X6Hd%}*mN  
import org.rut.util.algorithm.SortUtil; 1 ojy_  
g}=opw6z  
/** @fxDe[J:  
* @author treeroot CERT`W%o  
* @since 2006-2-2 ;v^1V+1:z  
* @version 1.0 !q_fcd^c  
*/ 3A.T_mGCs  
public class SelectionSort implements SortUtil.Sort { oaJnLd90W  
c$HZvv  
/* ESAFsJ$r;  
* (non-Javadoc) s5'So@L8  
* 6:vdo~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xm! ;  
*/ Iib39?D W  
public void sort(int[] data) { i5 F9*  
int temp; @ "=wn:O+  
for (int i = 0; i < data.length; i++) { g x~fZOF_  
int lowIndex = i; kX^Y{73  
for (int j = data.length - 1; j > i; j--) { 78 W&  
if (data[j] < data[lowIndex]) { 0QxE6>xL=  
lowIndex = j; <^(g<B`>  
} &.}Z j*BD  
} Cs ND:m  
SortUtil.swap(data,i,lowIndex); .[KXO0Ui6u  
} {g(-C&  
} _<i*{;kR6  
# U j~F  
} [10;Mg  
UI>?"b6 L  
Shell排序: uY6|LTK&x  
`vFYe N;  
package org.rut.util.algorithm.support; gP?uLnzvi  
-O?}-6,_Z  
import org.rut.util.algorithm.SortUtil; `Mp-4)mn  
z_LN*u  
/** &_N$S2  
* @author treeroot b\O%gg\p%!  
* @since 2006-2-2 ]FLi^}ct  
* @version 1.0 CUR70[pB)  
*/ ?yq1\G)]  
public class ShellSort implements SortUtil.Sort{ .s !qf!{V`  
PV_q=70%T  
/* (non-Javadoc) w_hGWpm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7FiQTS B:  
*/ Tp7slKc0p  
public void sort(int[] data) { 41[1_p(  
for(int i=data.length/2;i>2;i/=2){ xrPC  
for(int j=0;j insertSort(data,j,i);  qg+bh  
} p7pJ90~E  
} (wRJ"Nwu  
insertSort(data,0,1); &gL &@';,  
} \)Bws `  
j%qBNoT~  
/** # ,KjJ  
* @param data 71# ipZ  
* @param j Lh(` 9(tX  
* @param i cj!Ew}o40D  
*/ g}B|ZRz+{  
private void insertSort(int[] data, int start, int inc) { Do&/+Ssnu  
int temp; PnKgUJoa0  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _26<}&]b*  
} =R  <X!@  
} /T_ G9zc  
} `IQ76Xl  
:sY pZX1  
} XJ`!d\WL/!  
> v~?Vd(  
快速排序: ][y~(&=T  
;x=k J@  
package org.rut.util.algorithm.support; `]8z]PD  
9"H]zfW  
import org.rut.util.algorithm.SortUtil; ;m+*R/  
Oa'DVfw2J  
/** ,L"1Ah  
* @author treeroot mXH\z  
* @since 2006-2-2 q)ns ui(  
* @version 1.0 jd]YKaI  
*/ x]Nk T  
public class QuickSort implements SortUtil.Sort{ |aT&rpt   
A80r@)i  
/* (non-Javadoc) ; SS/bS|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #0WGSIht<  
*/ Jmp%%^  
public void sort(int[] data) { /*+P}__k  
quickSort(data,0,data.length-1); {Di()]/  
} : ;nvqbd  
private void quickSort(int[] data,int i,int j){  J(  
int pivotIndex=(i+j)/2; M%evk4_27  
file://swap ]R$ u3F  
SortUtil.swap(data,pivotIndex,j); I+?9}t  
#xMl<  
int k=partition(data,i-1,j,data[j]);  / >Z`?  
SortUtil.swap(data,k,j); v^=Po6S[{+  
if((k-i)>1) quickSort(data,i,k-1); BP6|^Q  
if((j-k)>1) quickSort(data,k+1,j); [LQD]#  
g.3a5#t  
} .<<RI8A  
/** YjTRz.e{[7  
* @param data P@m_tA%  
* @param i S<f]Y4A&  
* @param j MrW#~S|ED  
* @return d%y)/5  
*/ =q%Q^  
private int partition(int[] data, int l, int r,int pivot) { b6FC  
do{ `n*e8T  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V5MLzW\8  
SortUtil.swap(data,l,r); p6MjVu  
} c/G4@D>  
while(l SortUtil.swap(data,l,r); Lad8C  
return l; atW=xn  
} UkE  fuH  
TJHab;7F  
} B~[QmK  
eCDwY:t`  
改进后的快速排序: f(^? PGO  
h&t/ L  
package org.rut.util.algorithm.support;  =V- ^  
vqC!Ajm  
import org.rut.util.algorithm.SortUtil; ScgaWJ  
d-zNvbU"  
/** Z#O )0ou  
* @author treeroot e;M#MkP7  
* @since 2006-2-2 ,eI2#6w|C  
* @version 1.0 )(?,1>k`Z  
*/ ,G q?  
public class ImprovedQuickSort implements SortUtil.Sort { l@ amAusE  
MY8[)<q"  
private static int MAX_STACK_SIZE=4096; 78=a^gRB  
private static int THRESHOLD=10; Yq6e=?-  
/* (non-Javadoc) m a!rZ n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D%=VhKq  
*/ FN$sST  
public void sort(int[] data) { ~o_zV'^f@o  
int[] stack=new int[MAX_STACK_SIZE]; 3Kx&+  
eHQS\n  
int top=-1; #2/2X v  
int pivot; St1Ny,$yU  
int pivotIndex,l,r; /IO<TF(X  
^\ N@qL  
stack[++top]=0;  {"RUiL^  
stack[++top]=data.length-1; 5f~49(v]  
%4=r .9  
while(top>0){ ~t>i+{J KE  
int j=stack[top--]; n A<#A  
int i=stack[top--]; 'ie+/O@G  
Y<]A 5cm  
pivotIndex=(i+j)/2; X6T*?t3!9[  
pivot=data[pivotIndex]; (bX77 Xr  
#FZoi:'Q  
SortUtil.swap(data,pivotIndex,j); wWI1%#__|o  
T 5AoBUw  
file://partition !kTI@103Wd  
l=i-1; ?;bsg 9  
r=j; wNfWHaH" m  
do{ 6>X9|w  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); aqw;T\GI+~  
SortUtil.swap(data,l,r); >" &&,~  
} 1ti9FQ  
while(l SortUtil.swap(data,l,r); N wISf  
SortUtil.swap(data,l,j); 7)i6L'r  
/c&;WlE/n  
if((l-i)>THRESHOLD){ +o4W8f=Ga  
stack[++top]=i; <`f~Z|/-_(  
stack[++top]=l-1; )B!64'|M  
} $`wo8A|)  
if((j-l)>THRESHOLD){ ndXUR4  
stack[++top]=l+1; 6^+T_{gl  
stack[++top]=j; ZLS\K/F>>=  
} Pf,lZU?f  
Ec/-f `8  
} k-;A9!^h  
file://new InsertSort().sort(data); < %t$0'  
insertSort(data); @hG]Gs[,o  
} J;|i6q q  
/** W]-c`32~S  
* @param data ssx #\  
*/ U9/>}Ni%3G  
private void insertSort(int[] data) { sT<XZLu  
int temp; /7o{%~O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Rnd.<jz+Y  
} p(8[n^~,i  
} l2S1?*  
} { ML)F]]  
/hC'-6:]^  
} {Rv0@)P$  
b-"kclK  
归并排序: +FGw)>g8'm  
a^>e| Eq|  
package org.rut.util.algorithm.support; C}D\^(nLu.  
d>YX18'<Q  
import org.rut.util.algorithm.SortUtil; m+LP5S  
8ED}!;ZU  
/** U'Mxf'q  
* @author treeroot 5_yu4{@;y  
* @since 2006-2-2 "~nUwW|=1  
* @version 1.0 RX cfd-us  
*/ : 6|nXL  
public class MergeSort implements SortUtil.Sort{ _C&XwC Im  
7&>==|gt  
/* (non-Javadoc) [izP1A$r#Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '#ow 9w+^  
*/ 'X(Sn3  
public void sort(int[] data) { 5W4Tp% Lda  
int[] temp=new int[data.length]; QZ?%xN(4  
mergeSort(data,temp,0,data.length-1); &f_ua)cyY  
} kWm[Lt  
rIRkXO)  
private void mergeSort(int[] data,int[] temp,int l,int r){ e{k)]]J  
int mid=(l+r)/2; CeD(!1V G  
if(l==r) return ; V =-hqo(  
mergeSort(data,temp,l,mid); \1[v-hvK  
mergeSort(data,temp,mid+1,r); )>+J`NFa  
for(int i=l;i<=r;i++){ N&YQZ^o  
temp=data; ^>/] Qi  
} DMpNm F>  
int i1=l; v_L?n7c  
int i2=mid+1; wNtPh&  
for(int cur=l;cur<=r;cur++){ b[;Zl<  
if(i1==mid+1) vIpitbFC  
data[cur]=temp[i2++]; skzTw66W.  
else if(i2>r) /`H{ n$  
data[cur]=temp[i1++]; ~z&Ho  
else if(temp[i1] data[cur]=temp[i1++]; hY}.2  
else <52)  
data[cur]=temp[i2++]; <v+M~"%V  
} =c Krp'  
} cjyb:gAO  
M7. fz"M  
} VU ,tCTXz  
 FtmI\,  
改进后的归并排序: rG"QK!R5  
snti*e4"V  
package org.rut.util.algorithm.support; jB-wJNP/  
k`;&??  
import org.rut.util.algorithm.SortUtil; l>{+X )  
GkYD:o=qx  
/** Q ~>="Yiu  
* @author treeroot NI)q<@ju  
* @since 2006-2-2 C=!YcJ9  
* @version 1.0 kO'_g1f<[  
*/ O9jpt>:kZ  
public class ImprovedMergeSort implements SortUtil.Sort { \h UE, ^  
 vgbk {  
private static final int THRESHOLD = 10; <F#/wU^9  
~ s# !\Ye  
/* n1+,Pe*)  
* (non-Javadoc) 3E`poE  
* g4CdzN~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VSQxlAGk@  
*/ ;y%C\YB#  
public void sort(int[] data) { S)~Riuy$  
int[] temp=new int[data.length]; uU#7SX(uu  
mergeSort(data,temp,0,data.length-1); ,.PW qfb  
} 8j%hxAV$  
aVbv.>  
private void mergeSort(int[] data, int[] temp, int l, int r) { DX)T}V&mP  
int i, j, k; 50J"cGs~  
int mid = (l + r) / 2; \5=fC9*G  
if (l == r) 53jtwklA  
return; B}A7Usm  
if ((mid - l) >= THRESHOLD) 8jxs%N,aI  
mergeSort(data, temp, l, mid); ({l!'>?  
else 0"O22<K3a  
insertSort(data, l, mid - l + 1); kTe0"  
if ((r - mid) > THRESHOLD) km+}./@  
mergeSort(data, temp, mid + 1, r); ~.'NG? %7P  
else oN/T>&d  
insertSort(data, mid + 1, r - mid); _m8JU  
\JX.)&> -  
for (i = l; i <= mid; i++) { h=Xr J  
temp = data; SpG^kI #  
} g6=w MRt[  
for (j = 1; j <= r - mid; j++) { #7~i.8L  
temp[r - j + 1] = data[j + mid]; r\sQ8/  
} 5 LZ+~!2+  
int a = temp[l]; !Qd4Y=  
int b = temp[r]; q>X%MN y  
for (i = l, j = r, k = l; k <= r; k++) { <O#/-r>2  
if (a < b) { (&x#VmDL  
data[k] = temp[i++]; 2rK<UPIq  
a = temp; L>qLl_.  
} else { d;kdw  
data[k] = temp[j--]; zFtRsa5 +  
b = temp[j]; D; 0iNcit  
} Wi?37EHr  
} 8>sToNRNe  
} c%+9uu3  
!Xbr7:UPN1  
/** (|PxR#{l<  
* @param data XdDy0e4{%<  
* @param l #sq$i  
* @param i ~Z'3(n*9  
*/ >|[74#}7  
private void insertSort(int[] data, int start, int len) { U_UX *  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); B0^0d*8t|@  
} 27t23@{YL  
} x@I(G "  
} P*# H]Pv  
} 7O)U(<70  
poqx O  
堆排序: .cQ<F4)!tu  
9W{=6D86e  
package org.rut.util.algorithm.support; Vc! ;O9dP  
2B# ]z  
import org.rut.util.algorithm.SortUtil; /l,V0+p  
>HUU`= SC  
/** A&2)iQ  
* @author treeroot Xw=>L#Q  
* @since 2006-2-2 <.0-K_  
* @version 1.0 Fvy__ qcHi  
*/ pN)9 GO5  
public class HeapSort implements SortUtil.Sort{ 5_ @8g+~  
&sp7YkaW  
/* (non-Javadoc) 4*4s{twG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dooS|Mq  
*/ >5&'_  
public void sort(int[] data) { 99@uU[&IJ  
MaxHeap h=new MaxHeap(); 3hOiHO ;  
h.init(data); IRemF@  
for(int i=0;i h.remove(); 2NLD7A  
System.arraycopy(h.queue,1,data,0,data.length); ?q(7avS9  
} }jM&GH1  
2<Tbd"x?  
private static class MaxHeap{  $&96qsr  
`/:ZB6  
void init(int[] data){ x1\,WOrmK  
this.queue=new int[data.length+1]; 9pKN^FX,76  
for(int i=0;i queue[++size]=data; bu[v[U4  
fixUp(size); gRS}Y8  
} :A\8#]3  
} F$UvYy4O d  
,YYyFMC7S  
private int size=0; XO+^q9  
ugEh}3  
private int[] queue; wuCiO;w  
<FIc!  
public int get() { ZR<T\w  
return queue[1]; $DZ\61  
} 2r2qZ#I}  
05mjV6j7m  
public void remove() { %O`e!p  
SortUtil.swap(queue,1,size--); #Jv|zf5Z  
fixDown(1); nc#}-}`5  
} s l|n]#)  
file://fixdown Amf gc>eJ  
private void fixDown(int k) { t@[&8j2B>  
int j; { as#lHn  
while ((j = k << 1) <= size) { PG<tic<?  
if (j < size %26amp;%26amp; queue[j] j++; =B g  
if (queue[k]>queue[j]) file://不用交换 R _WP r[P  
break; C fKvC  
SortUtil.swap(queue,j,k); *2ZX*w37  
k = j; /s"mqBXCG  
} ;Bk?,g  
} x2 *l5t  
private void fixUp(int k) { I@a y&NNh  
while (k > 1) { HV-c DL  
int j = k >> 1; ;0ap#6T  
if (queue[j]>queue[k]) )mw#MTv<[  
break; +:3K?G -  
SortUtil.swap(queue,j,k); ct+ ;W  
k = j; g5X;]%:  
} ;uj&j1  
} >J+'hm@  
C?jk#T  
} >58N P1[k  
j+He8w-4  
} <rZ( B>$  
K' xN>qc  
SortUtil: 9P;}P! W  
xT7JGQ[|  
package org.rut.util.algorithm; {  O+d7,C  
#nV F.  
import org.rut.util.algorithm.support.BubbleSort; Gf'qPLK0  
import org.rut.util.algorithm.support.HeapSort; G+2!+N\P  
import org.rut.util.algorithm.support.ImprovedMergeSort; u`I&&  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;i*<HNQ  
import org.rut.util.algorithm.support.InsertSort; p|!5G&O,  
import org.rut.util.algorithm.support.MergeSort; U5N/'p%)<  
import org.rut.util.algorithm.support.QuickSort; #@s[!4)_I  
import org.rut.util.algorithm.support.SelectionSort; lXH?*  
import org.rut.util.algorithm.support.ShellSort; e P]L  
#=mLQSiQ  
/** yd#SB)&  
* @author treeroot P_S^)Yo  
* @since 2006-2-2 %5#ts/f  
* @version 1.0 t*H r(|.  
*/ FCL7Tn  
public class SortUtil { &)[?D<  
public final static int INSERT = 1; N>kY$*  
public final static int BUBBLE = 2; 1h uU7xuf  
public final static int SELECTION = 3; THC7e>P4  
public final static int SHELL = 4; G`H4#@]  
public final static int QUICK = 5; Fk(nf9M%  
public final static int IMPROVED_QUICK = 6; _L }k.  
public final static int MERGE = 7; to-DXT.  
public final static int IMPROVED_MERGE = 8; 0LEJnl  
public final static int HEAP = 9; 84g$V}mp  
\)KLm  
public static void sort(int[] data) { RCM;k;@8V  
sort(data, IMPROVED_QUICK); 1vKAJ<4W  
} @r7ekyO8)  
private static String[] name={ /Kcp9Qx  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e ]-fb{oVH  
}; f793yCiG  
gR7in!8  
private static Sort[] impl=new Sort[]{ F/gA[Y|,gI  
new InsertSort(), .g/PWEr\I  
new BubbleSort(), uG-t)pej  
new SelectionSort(), vmEbk/Vy  
new ShellSort(), {A<pb{<u  
new QuickSort(), P/%5J3_,  
new ImprovedQuickSort(), yN-o?[o  
new MergeSort(), X5[.X()M4  
new ImprovedMergeSort(), Qy0Zj$,Z  
new HeapSort() u={A4A#  
}; \! `k:lusa  
@8\7H'K"\  
public static String toString(int algorithm){ X#v6v)c  
return name[algorithm-1]; 'M20v-[  
} {`RCh]W  
py \KY R  
public static void sort(int[] data, int algorithm) { ]#$l"ss,  
impl[algorithm-1].sort(data); fkKk/M> 1  
} .J=<E  
CuT~ Bj  
public static interface Sort { iO$Z?Dyg9  
public void sort(int[] data); 9 5cIdF 6m  
} c+dmA(JC  
Z+p'3  
public static void swap(int[] data, int i, int j) { {X r|L  
int temp = data; Hs9; &C  
data = data[j]; 'xK ,|U  
data[j] = temp; 7-#R[8S  
} IOL5p*:gz  
} 79HKfG2+KB  
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