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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。 83?1<v0%  
插入排序: }*-u$=2  
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package org.rut.util.algorithm.support; xvO 3BU~2  
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import org.rut.util.algorithm.SortUtil; C*j9Iaj  
/** WJcVQM s  
* @author treeroot kC|Tubs(  
* @since 2006-2-2 KZi' v6  
* @version 1.0 @$ftG  
*/ Gx;xj0-"  
public class InsertSort implements SortUtil.Sort{ =f4< ({9  
tWRf'n[+]  
/* (non-Javadoc) ULTNhq R*n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aL 8Gnqf2  
*/ :R3P 58>  
public void sort(int[] data) { #jgqkMOd,j  
int temp; (7 ijt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \L %q[  
} sr4jQo  
} QD}1?)}  
} pzAoq)gg:  
5R"2Wd  
} a.CF9m5]c  
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冒泡排序: 1M=   
m6eFXP1U  
package org.rut.util.algorithm.support; n/?eZx1  
l JlZHO  
import org.rut.util.algorithm.SortUtil; P!9;} &  
pIvfmIm  
/** j;G[%gi6{  
* @author treeroot iT[o KD0)  
* @since 2006-2-2 /'mrDb_ip  
* @version 1.0 _2#zeT5  
*/ @kz!{g]Sn  
public class BubbleSort implements SortUtil.Sort{ Nr%(2[$ =  
"0b?+ 3_{G  
/* (non-Javadoc) `,Xb8^M2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) prwC>LE  
*/ RrKfTiK H  
public void sort(int[] data) { IO*l vy  
int temp; Rnzqw,q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5cgo)/3M@}  
if(data[j] SortUtil.swap(data,j,j-1); K]ca4Z  
} 2+,5p  
} ka!Bmv)  
} ENO? ;  
} epn#qeX  
FOc|*>aKP  
} eN2dy-0  
uC- A43utv  
选择排序: W=UqX{-j)  
VccM=w% *  
package org.rut.util.algorithm.support; qQL.c+%L  
I/Sv"X6E  
import org.rut.util.algorithm.SortUtil; l<W*/}3  
Wgav>7!9  
/** /8=:qIJYA  
* @author treeroot u1tq2"D8  
* @since 2006-2-2 ``+c`F?5  
* @version 1.0 4 #aqz9k  
*/ {,i=>%X*  
public class SelectionSort implements SortUtil.Sort { qC\]"Z`m  
ax<g0=^R  
/* IY V-*/ |  
* (non-Javadoc) =E&24  
* T_uNF8Bh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aF,j J}On  
*/ 8oa)qaG1  
public void sort(int[] data) { ri"?, }(  
int temp; ~l(G6/R  
for (int i = 0; i < data.length; i++) { Lwp-2`%  
int lowIndex = i; U&,r4>V@h>  
for (int j = data.length - 1; j > i; j--) { +Y^-e.UO  
if (data[j] < data[lowIndex]) { MhHr*!N"}  
lowIndex = j; Uc\|X;nkRk  
} \nC5 ,Rz  
} Y=5!QLV4  
SortUtil.swap(data,i,lowIndex); BHF{-z  
} ^Yf3"D?&  
} iPA@<D%  
`kqT{fs  
} sVE>=0TVP  
<+<)xwOQ ]  
Shell排序: ny278tr Q7  
NdM}xh  
package org.rut.util.algorithm.support; -;l`hRW  
+F1]M2p]  
import org.rut.util.algorithm.SortUtil; QV`X?m  
)o05Vda  
/** HT{F$27W  
* @author treeroot }W- K  
* @since 2006-2-2 {[l'S  
* @version 1.0 # rh0r`  
*/ 9c"0~7v  
public class ShellSort implements SortUtil.Sort{ F6RyOUma  
~z\pI|DQ  
/* (non-Javadoc) =@bXGMsV!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @).WIs  
*/ vN{vJlpY  
public void sort(int[] data) { VaD:  
for(int i=data.length/2;i>2;i/=2){ Xulh.: N}  
for(int j=0;j insertSort(data,j,i); o%kSR ]V|  
} .a 'ETNY:>  
} (1j(* ?2  
insertSort(data,0,1); OU0xZ=G  
} PiIp<fJd$  
[,\'V0  
/** <wIp$F.  
* @param data I T*fjUY&  
* @param j V/QTYy1  
* @param i 5pNvzw  
*/ !mw{T D  
private void insertSort(int[] data, int start, int inc) { D6C -x  
int temp; o'x_g^ Y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); EGQ1l i'B  
} !nP8ysB  
} b&hF')_UOz  
} ,Ut!u)  
'^P*F9  
} ? RrC~7~  
Z'*G'/*  
快速排序: S>/I?(J  
@B>%B EC  
package org.rut.util.algorithm.support; 1CF7  
30gZ_ 8C>}  
import org.rut.util.algorithm.SortUtil; dpc=yXg>"c  
F M@W>+  
/** %k1q4qOG]^  
* @author treeroot .@x"JI> ;  
* @since 2006-2-2 x~3>1Wr#M  
* @version 1.0 EmBfiuX  
*/ ;GSfN  
public class QuickSort implements SortUtil.Sort{ {ra Esb-X  
H|(*$!~e  
/* (non-Javadoc) X*p:&=o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Eo25ir%  
*/ H)?" 8 s  
public void sort(int[] data) { eBLHT  
quickSort(data,0,data.length-1); FZ}C;yUPD  
} ( .6tz  
private void quickSort(int[] data,int i,int j){ BT*K,p  
int pivotIndex=(i+j)/2; epY;1,; >  
file://swap #h5Hi9LKf  
SortUtil.swap(data,pivotIndex,j); .J7-4  
[{.\UkV@  
int k=partition(data,i-1,j,data[j]); Do{*cSd  
SortUtil.swap(data,k,j); cbg3bi  
if((k-i)>1) quickSort(data,i,k-1); ggYIq*4  
if((j-k)>1) quickSort(data,k+1,j); e[py J.  
XN0RT>@  
} 8xGkh?%  
/** :h](;W>H  
* @param data YM,D`c[pX  
* @param i JY,l#?lM{  
* @param j -7Y'6''~W.  
* @return 5kL#V  
*/ 0UAr}H.:  
private int partition(int[] data, int l, int r,int pivot) { -%QEzu&  
do{ oVj A$|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S+\Mt+o  
SortUtil.swap(data,l,r); CBgFB-!qpe  
} K+aJ`V  
while(l SortUtil.swap(data,l,r); V'| g  
return l; {<V|Gr  
} |GLn 9vw7S  
u BW  
} [4 (A458H  
!nD[hI8P  
改进后的快速排序: eC1c`@C:  
5;KT-(q~  
package org.rut.util.algorithm.support; {10+(Vl  
y`P7LC  
import org.rut.util.algorithm.SortUtil; tGy%n[ \  
Yv`1ySR  
/** C&MqUj"]  
* @author treeroot hE3jb.s(>  
* @since 2006-2-2 Z~R/ p;@  
* @version 1.0 1PjX:]:  
*/ @eD~FNf-]  
public class ImprovedQuickSort implements SortUtil.Sort { -T="Ml &  
:$@zX]?M  
private static int MAX_STACK_SIZE=4096; ri.|EmH2:D  
private static int THRESHOLD=10; ^L2Zo'y [  
/* (non-Javadoc) a/xCl :=8q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ynz5Dy.d;  
*/ !7Q.w/|=  
public void sort(int[] data) { G}OrpPP  
int[] stack=new int[MAX_STACK_SIZE]; (6_/n&mF  
'k) P(H  
int top=-1; kys-~&@+  
int pivot; +GEKg~/4e  
int pivotIndex,l,r; ,PtR^" Mf4  
H H7 gT  
stack[++top]=0; d=Ihl30m  
stack[++top]=data.length-1; 3uiitjA]  
2/W0y!qh1  
while(top>0){ @n y{.s+  
int j=stack[top--]; ntUVhIE0  
int i=stack[top--]; RB 0j!H:  
).6/ii9gt  
pivotIndex=(i+j)/2; 6 v#sq  
pivot=data[pivotIndex]; R(#;yn  
|[t=.dK%  
SortUtil.swap(data,pivotIndex,j); kUBHK"}K  
+Gs;3jC^  
file://partition VY26 Cf"  
l=i-1; -CNv=vj 3  
r=j; 2QD B'xs3  
do{ ;5S7_p2]j  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y")>"8H  
SortUtil.swap(data,l,r); [<yUq zm  
} %Y[/Ucdm  
while(l SortUtil.swap(data,l,r); lP &%5y;  
SortUtil.swap(data,l,j); w'j]Y%  
v\T1,Z@N^  
if((l-i)>THRESHOLD){  o=5uM  
stack[++top]=i; Z%d4V<fn  
stack[++top]=l-1; ) x $Vy=  
} */qc%!YV9  
if((j-l)>THRESHOLD){ ijSYQ  
stack[++top]=l+1; Rla*hc~  
stack[++top]=j; MO+0]uh:  
} M0\[hps~X  
aPMM:RP`  
} !I  P*  
file://new InsertSort().sort(data); |#,W3Ik(l  
insertSort(data); m$j;FKz+|  
} uZI:Kt#  
/** Y& %0 eI!  
* @param data  X0L{#U  
*/ {x$#5 PW  
private void insertSort(int[] data) { l$@lk?dc  
int temp; Y)5}bmL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K~N[^pF  
} FV,SA3  
} Unk+@$E&  
} "6h.6_bTw  
|EA1+I.&x  
} $*> _0{<  
@1X1E 2:  
归并排序: 9&jNdB  
-I<`!kH*  
package org.rut.util.algorithm.support; fQ) ;+  
g DIB'Y  
import org.rut.util.algorithm.SortUtil; cVi CWc2  
KLB?GN?Pb  
/** +[qy HTcG  
* @author treeroot 6FAP *V;  
* @since 2006-2-2 '!GI:U+g  
* @version 1.0 w Nnb@  
*/ R'U(]&e.j  
public class MergeSort implements SortUtil.Sort{ S d -+a  
%&NK|M+n  
/* (non-Javadoc) .$;GVJ-:5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^\;5O(9  
*/ G3n7x?4m  
public void sort(int[] data) { n_Dhq(.  
int[] temp=new int[data.length]; oyY,uB.|  
mergeSort(data,temp,0,data.length-1); D:0PppE  
} ?U[AE -*  
X8TZePh  
private void mergeSort(int[] data,int[] temp,int l,int r){ S{06bLXU"  
int mid=(l+r)/2; X88Zd M'  
if(l==r) return ; D=$<E x^p  
mergeSort(data,temp,l,mid);  -W ,b*U  
mergeSort(data,temp,mid+1,r); 7y3; F7V  
for(int i=l;i<=r;i++){ VdgPb (  
temp=data; g*uO IF  
} i)ctrdP-  
int i1=l; TM;)[R@  
int i2=mid+1; J0k~%   
for(int cur=l;cur<=r;cur++){ 6=k^gH[g  
if(i1==mid+1) "lt[)3*  
data[cur]=temp[i2++]; pOXEM1"2A  
else if(i2>r) 195(Kr<5$  
data[cur]=temp[i1++]; [%pZM.jFO  
else if(temp[i1] data[cur]=temp[i1++]; Et (prmH  
else p%_TbH3j`  
data[cur]=temp[i2++]; `:&{/|uP7  
} }Z|a?J@CZm  
} pI4<` K  
p#w,+)1!d  
} &2DW  
7pNh|#Uv'  
改进后的归并排序: >8##~ZuF+  
iDA`pemmi&  
package org.rut.util.algorithm.support; Ic*Q(X  
&}oDSD H^,  
import org.rut.util.algorithm.SortUtil; ]KmYPrCl0  
W*0KAC`m  
/** [3s~Z8 pP  
* @author treeroot '"&?u8u)  
* @since 2006-2-2 udB}`<Q  
* @version 1.0 ?s//a_nL*  
*/ |7argk+  
public class ImprovedMergeSort implements SortUtil.Sort { g!8-yri  
A U](pXK;  
private static final int THRESHOLD = 10; B?]^}r  
U*Q$:%72vO  
/* l!b#v`  
* (non-Javadoc) h(9K7  
* jH8F^KJM[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /1Eg6hf9B  
*/ {0|^F!1z  
public void sort(int[] data) { "}n]0 >J  
int[] temp=new int[data.length]; *]LM2J  
mergeSort(data,temp,0,data.length-1); ^^v!..V]J  
} Ne=D $o  
;RR)C@n1  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6|zA,-=  
int i, j, k; y,aASy!Q  
int mid = (l + r) / 2; U@9n 7F  
if (l == r) c9Cp!.#*E  
return; Y!5-WX H  
if ((mid - l) >= THRESHOLD) 'b-}KDP  
mergeSort(data, temp, l, mid); EprgLZ1B  
else "G< ^@v9  
insertSort(data, l, mid - l + 1); aJub("  
if ((r - mid) > THRESHOLD) | 2mEowAd  
mergeSort(data, temp, mid + 1, r); yPL@uCzA@  
else LB>!%Vx  
insertSort(data, mid + 1, r - mid); Uu G;z5  
x{=ty*E  
for (i = l; i <= mid; i++) { 6`4=!ZfI  
temp = data; y'(;!5w  
} _W$4Qn+f  
for (j = 1; j <= r - mid; j++) { 5@i/4%S  
temp[r - j + 1] = data[j + mid]; /@0wbA  
} $Q62 7  
int a = temp[l]; n84*[d}t  
int b = temp[r]; $} ~:x_[  
for (i = l, j = r, k = l; k <= r; k++) { I&4|T<j  
if (a < b) { NKRNEq!  
data[k] = temp[i++]; )jn xR${M  
a = temp; <CeDIX t  
} else { m#Rll[  
data[k] = temp[j--]; {4 *ob@w*  
b = temp[j]; #\fAp RL  
} }E*#VA0/nY  
} sq*sbdE  
} 8USF;k  
k kY*OA  
/** z1s9[5  
* @param data E: #VS~  
* @param l nNf/$h#;O  
* @param i s<n5^Vxy  
*/ TTS }, `  
private void insertSort(int[] data, int start, int len) { B|#"dhT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xCGvLvFn  
} \=1k29O  
} N n+leM  
} ]^R;3kU4Q  
} j$BM$q/c  
^,@Rd\q  
堆排序: 'xhX\?mD  
gFJd8#6t  
package org.rut.util.algorithm.support; ur"cku G!9  
yPKeatH]  
import org.rut.util.algorithm.SortUtil; Za5*HCo  
L=?Yc*vg  
/** .(`#q@73  
* @author treeroot }3ty2D#/:  
* @since 2006-2-2 ]=7}Y%6  
* @version 1.0 M{Wla 7  
*/ !Hxx6/  
public class HeapSort implements SortUtil.Sort{ !'[f!vsyM{  
y.HE3tH  
/* (non-Javadoc) (ybKACx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AKejWh  
*/ ZU5hHah.t  
public void sort(int[] data) { y>UM~E  
MaxHeap h=new MaxHeap(); ]W]o6uo7  
h.init(data); i.C+{QH  
for(int i=0;i h.remove(); I5 "Z  
System.arraycopy(h.queue,1,data,0,data.length); Y7{IF X  
}  mR)Xq=  
nn5tOV}QE  
private static class MaxHeap{ YAYPof~A$l  
cQ} ,q+GR~  
void init(int[] data){ %4*-BCP  
this.queue=new int[data.length+1]; ,6uON@  
for(int i=0;i queue[++size]=data; L'iENZ I$  
fixUp(size); GWsvN&nr  
} _0 Qp[l-  
} i 3?=up!  
*<c, x8\s9  
private int size=0; U-&dn%Sq  
l 8qCg/ew  
private int[] queue; 5|z>_f.^pS  
N_Q)AXr)  
public int get() { Z?ZiK1) K  
return queue[1]; ~)xg7\k  
} SaceIV%(  
2.)xWCG  
public void remove() { +i HZ*  
SortUtil.swap(queue,1,size--); h8B:}_Cu  
fixDown(1); W5z<+8R  
} 6Lj=%&  
file://fixdown #; ~`+[y?\  
private void fixDown(int k) { X67^@~l  
int j; -!V+>.Oh  
while ((j = k << 1) <= size) { Gmi ^2?Z(  
if (j < size %26amp;%26amp; queue[j] j++; @-ps[b`z  
if (queue[k]>queue[j]) file://不用交换 &\6Buw_  
break; 14>WpNN  
SortUtil.swap(queue,j,k); W}jel}:  
k = j; r&!Ebe-  
} 2MY-9(no  
} l ld,&N8  
private void fixUp(int k) { ~C M%WvS  
while (k > 1) { M:TN^ rA|  
int j = k >> 1; <5@VFRjc  
if (queue[j]>queue[k]) X% JQ_Z  
break; '^mCLfo0}  
SortUtil.swap(queue,j,k); |p_\pa1&  
k = j; p6S{OUiG  
} (dvsGYT|.  
} v\lhbpk  
l/*NscYtQ  
} &k53*Wo  
z3-A2#c  
} 2:[ -  
/Uxp5 b h  
SortUtil: lB)%s~P:s  
z3Id8G&>  
package org.rut.util.algorithm; 2><=U7~  
~t=73 fwB  
import org.rut.util.algorithm.support.BubbleSort; <DeC^[-P  
import org.rut.util.algorithm.support.HeapSort; LK>A C9ak<  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9!XXuMWU<  
import org.rut.util.algorithm.support.ImprovedQuickSort; !m {d6C[  
import org.rut.util.algorithm.support.InsertSort; 1 sJtkge:  
import org.rut.util.algorithm.support.MergeSort; ;r8< Ed  
import org.rut.util.algorithm.support.QuickSort; |-)2 D=P  
import org.rut.util.algorithm.support.SelectionSort; wqnrN6$jf  
import org.rut.util.algorithm.support.ShellSort; )70i/%}7  
]#NJ[IZb  
/** ~SzHIVj:6  
* @author treeroot @"h @4q/W  
* @since 2006-2-2 gI T3A*x  
* @version 1.0 Qr.SPNUFK  
*/ <Jc :a?ICe  
public class SortUtil { 9B)<7JJX!J  
public final static int INSERT = 1; V|\dnVQ'-%  
public final static int BUBBLE = 2; l/i7<q  
public final static int SELECTION = 3; a>H8, a  
public final static int SHELL = 4; F`Ld WA  
public final static int QUICK = 5; #@UzOQ>  
public final static int IMPROVED_QUICK = 6;  j1~'[  
public final static int MERGE = 7; TC* 78;r  
public final static int IMPROVED_MERGE = 8; k>.n[`>$6|  
public final static int HEAP = 9; xg.o7-^M  
1F,>siuh ,  
public static void sort(int[] data) { F1A7l"X]  
sort(data, IMPROVED_QUICK); h uIvXl  
} 2kfX_RK  
private static String[] name={ z)_h"y?H{%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *Y]()#?Gr  
}; '$0~PH&  
dX;Q\  ]"  
private static Sort[] impl=new Sort[]{ PZ.q  
new InsertSort(), NsN =0ff  
new BubbleSort(), PdD,~N#  
new SelectionSort(), oMeIXb)z  
new ShellSort(), .|g|X8X  
new QuickSort(), (:r80:  
new ImprovedQuickSort(), ^Q9!DF m  
new MergeSort(), _ `~\zzUZ  
new ImprovedMergeSort(), i"RBk%  
new HeapSort() %8c2d  
}; ,!>1A;~wT  
7^FJ+gN8b  
public static String toString(int algorithm){ S{ fFpe-  
return name[algorithm-1]; p*C|kEqk  
} vrX@T ?>  
IBm"VCg{Ew  
public static void sort(int[] data, int algorithm) { y!u=]BE  
impl[algorithm-1].sort(data); | k?r1dj%O  
} F tw ;T|  
U-ADdO h"q  
public static interface Sort { 8Cef ]@x  
public void sort(int[] data); |PxTm  
} [ BZA1,  
chakp!S=  
public static void swap(int[] data, int i, int j) { ]AB'POa  
int temp = data; TjY-C m  
data = data[j]; U#6<80Ke  
data[j] = temp; Yaix\*II  
} M]7>Ar'zsG  
} 60z8U#upM  
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