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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。 56T{JTo  
插入排序: G "`t$=0  
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package org.rut.util.algorithm.support; -VO* P  
9 `z^'k&  
import org.rut.util.algorithm.SortUtil; & 24$*Oe  
/**  D/]  
* @author treeroot ;Br #e1~  
* @since 2006-2-2 .l}oxWWoS  
* @version 1.0 "E}38  
*/ |]'0z0>  
public class InsertSort implements SortUtil.Sort{ C}8 3t~Q  
k~HS_b*]d  
/* (non-Javadoc) hz*H,E!>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  - j_  
*/ 7o4B1YD  
public void sort(int[] data) { pA?2UZ  
int temp; w~l%xiC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?QG?F9?  
} drK &  
} ,R2;oF_  
} Lc5I?}:;L  
ZAa:f:[#f  
} KW-g $Ma  
pCt0[R;?  
冒泡排序: Z2^B.r#  
fe$OPl~  
package org.rut.util.algorithm.support; Ch,%xs.)G  
D ~LU3#n  
import org.rut.util.algorithm.SortUtil; KG9FR*"  
DfV'1s4y  
/** bFtzwa5Gc  
* @author treeroot vD'YLn%Q  
* @since 2006-2-2 .:V4>  
* @version 1.0 )R@M~d-o  
*/ j#[%-nOT  
public class BubbleSort implements SortUtil.Sort{ :]+p#l  
gq[`g=x  
/* (non-Javadoc) SJXP}JB_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .BjnV%l7Id  
*/ g&`[r6B  
public void sort(int[] data) { 6 ~d\+aV  
int temp; NQqq\h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ oES4X{,  
if(data[j] SortUtil.swap(data,j,j-1); $mLiEsJ  
} L qdz qq  
} #) bqn|0l  
} qS}pv  
} \\i$zRi  
%^ g(2^  
} A!.* eIV|  
kRH;c,E@  
选择排序: }Asp=<kCc  
/{HK0fd  
package org.rut.util.algorithm.support; 9G"-~C"e3  
EGIwqci:  
import org.rut.util.algorithm.SortUtil; XX|wle1Kg  
tj;<EaM  
/** y&{ Z"+B5  
* @author treeroot rtY4 B~_  
* @since 2006-2-2 o dTg.m  
* @version 1.0 ^#)M,.G^  
*/ c`x[C  
public class SelectionSort implements SortUtil.Sort { |{JJ2c\W  
KM jnY2  
/* kFo&!  
* (non-Javadoc) 7<p? E7  
* Fl;!'1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > g=u Y{Rf  
*/ 9a;8^?Ld%S  
public void sort(int[] data) { &nX,)"  
int temp; =as\Tp#d  
for (int i = 0; i < data.length; i++) { bhg OLh#  
int lowIndex = i; Xsit4Ma  
for (int j = data.length - 1; j > i; j--) { 4[^lE?+  
if (data[j] < data[lowIndex]) { c0M>CaKD  
lowIndex = j; J0a#QvX!  
} z(dX<  
} Zk#?.z}  
SortUtil.swap(data,i,lowIndex); >HlQ+bl$xw  
} ;?'=*+'>  
} oYNp0Hc  
$dgez#TPL  
} j~:N8(=  
lM'yj}:~  
Shell排序: PquATAzQA  
@E5 }v  
package org.rut.util.algorithm.support; 1ps_zn(  
h<ULp &g  
import org.rut.util.algorithm.SortUtil; WA&&*ae5`  
\NI0rL  
/** b1NB:  
* @author treeroot 'I *&P5|  
* @since 2006-2-2 p&4#9I5  
* @version 1.0 d?_LNSDo  
*/ jtF et{  
public class ShellSort implements SortUtil.Sort{ LwL\CE_6+  
0nOp'Ky\k  
/* (non-Javadoc) =gb(<`{>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u{"@ 4  
*/ r GxX]  
public void sort(int[] data) { RS`~i8e'  
for(int i=data.length/2;i>2;i/=2){ sB>ZN3ptH^  
for(int j=0;j insertSort(data,j,i); YMEI J}  
} ,H+LE$=  
} Z6XP..  
insertSort(data,0,1); ^&-H"jF  
} ZFsJeF'"  
Q0cr^24/  
/** u]%>=N(^2  
* @param data LUjev\Re  
* @param j m&X6a C'[  
* @param i o I6o$C  
*/ 3x{2Dhi  
private void insertSort(int[] data, int start, int inc) { FTfejk!  
int temp; U%,N"]`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o) hQ]d  
} 2AZ)|dM'`  
} G,J~Ed  
} zrJ/Fs+s  
u/2!v(  
} s*0PJ\E2  
}|7y.*  
快速排序: wWNHZ v&  
|,wp@)e6h  
package org.rut.util.algorithm.support; 0 w#[?.  
30Z RKrW"~  
import org.rut.util.algorithm.SortUtil; 8Qg,UX  
)|@ H#kv?  
/** #=hI}%n  
* @author treeroot @]0;aZ{3  
* @since 2006-2-2 B "z`X!\  
* @version 1.0 C'c9AoE5>  
*/ p#V h[UTl^  
public class QuickSort implements SortUtil.Sort{ HX3R@^vo  
<Y9xHn&  
/* (non-Javadoc) Uc3-n`C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &4ScwK:  
*/ = NHzh!  
public void sort(int[] data) { =(~UK9`  
quickSort(data,0,data.length-1); 0H-~-z8Y  
} {LLy4m  
private void quickSort(int[] data,int i,int j){ KiJRq>  
int pivotIndex=(i+j)/2; ZAG ia q  
file://swap JM@}+pX  
SortUtil.swap(data,pivotIndex,j); kr C4O2Fkj  
?5<Q+ G0r  
int k=partition(data,i-1,j,data[j]); UA|A>c  
SortUtil.swap(data,k,j); ByK!r~>Z1Q  
if((k-i)>1) quickSort(data,i,k-1); ?(^HjRUY  
if((j-k)>1) quickSort(data,k+1,j); j5EZJ`  
_IOt(Zb(  
} lc71Pp>  
/** v3i]z9`  
* @param data E.kjYIH8  
* @param i uWYI p\NN  
* @param j xjOj1Hv  
* @return MxY~(TVPK  
*/ -U?Udmov  
private int partition(int[] data, int l, int r,int pivot) { Eo$7W5h J  
do{ %Hk9.1hn5  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x}W,B,q  
SortUtil.swap(data,l,r); %\ i 7  
} ZgcJxWC<  
while(l SortUtil.swap(data,l,r); lKd+,<  
return l; \P;%fN  
} aF9p%HPDw  
%U&O \GB  
} {/C \GxH+  
LH4!QDK-  
改进后的快速排序: -o8H_MR  
wW~y?A"{2  
package org.rut.util.algorithm.support; HD(4Ms  
3K/32Wi  
import org.rut.util.algorithm.SortUtil; cGhnI&  
,{HxX0  
/** :[1^IH(sb  
* @author treeroot _JZw d9K  
* @since 2006-2-2 W -Yv0n3  
* @version 1.0 cViEvS r  
*/ Vs-])Q?7J  
public class ImprovedQuickSort implements SortUtil.Sort { ] {r*Z6bs  
+ou ]|  
private static int MAX_STACK_SIZE=4096; xm }9(EJ  
private static int THRESHOLD=10; KV Vo_9S'  
/* (non-Javadoc) (3DjFT3 w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lbka*@  
*/ :@:i*2=  
public void sort(int[] data) { brA\Fp^  
int[] stack=new int[MAX_STACK_SIZE]; ^T[8j/9o^  
eC^UL5>%  
int top=-1; R&cOhUj22J  
int pivot; 37hs/=x  
int pivotIndex,l,r; R#ABda9  
JC~L!)f  
stack[++top]=0; j9@7\N<  
stack[++top]=data.length-1; L7*,v5  
R^PPgE6!$  
while(top>0){ gAA2S5th  
int j=stack[top--]; lLO|,  
int i=stack[top--]; 9Ij=~p]p  
4aAuE0  
pivotIndex=(i+j)/2; 2NHkK_B1P  
pivot=data[pivotIndex]; M^c`j#NQ  
o5 UM)g  
SortUtil.swap(data,pivotIndex,j); +>#SB"'  
la7VeFT  
file://partition T5; zgr  
l=i-1; M]O _L  
r=j; "K3"s Ec%  
do{ @l)HX'z0d  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  2D;,'  
SortUtil.swap(data,l,r); L*xu<(>K  
} b'9\j.By  
while(l SortUtil.swap(data,l,r); <9JI@\>  
SortUtil.swap(data,l,j); iGxlB  
.E'Tfa  
if((l-i)>THRESHOLD){ CdCo+U5z{  
stack[++top]=i; M ABrf`<b  
stack[++top]=l-1; eI8rnp( Ia  
} DQ '=$z  
if((j-l)>THRESHOLD){ rBd}u+:*  
stack[++top]=l+1; 5OUGln5  
stack[++top]=j; "~R,%sYb(  
} &vf9Gp+MK  
{9kH<,PJ;!  
} S]E1+,-*  
file://new InsertSort().sort(data); `0 .<  
insertSort(data); Y}<w)b1e|  
} uhi(Gny.  
/** J*Dt\[X  
* @param data c418TjO;  
*/ J1@X6U!{  
private void insertSort(int[] data) { UF3g]>*  
int temp; ~=$0=)c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J9!}8uD  
} j_::#?o!/  
} C` s  
} ; B4x>  
ldd|"[Ds  
} {}r#s>  
: GVyY]qBU  
归并排序: :fo.9J  
,$i2vGd  
package org.rut.util.algorithm.support; zX{O"w  
9 7 Oi}   
import org.rut.util.algorithm.SortUtil; PtH>I,/  
o~Jce$ X  
/** b-Q*!U t  
* @author treeroot 7jss3^.wA  
* @since 2006-2-2 x*]&Ca0+  
* @version 1.0 >o=O^:/L  
*/ H =Y7#{}  
public class MergeSort implements SortUtil.Sort{ {+`'ZU6C  
vL>cYbJ<  
/* (non-Javadoc) V}?*kx~T2C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +m|S7yr'  
*/ ^|u7+b'|t  
public void sort(int[] data) { 8|Wu8z--  
int[] temp=new int[data.length]; HPz9Er  
mergeSort(data,temp,0,data.length-1); 7R4sd  
} :{:R5d(_I  
%sd1`1In  
private void mergeSort(int[] data,int[] temp,int l,int r){ O*;$))<wX  
int mid=(l+r)/2; ZDMv8BP7  
if(l==r) return ; Ri[ v(Zf  
mergeSort(data,temp,l,mid); DRp h?V\  
mergeSort(data,temp,mid+1,r); Mnj\t3:  
for(int i=l;i<=r;i++){ 9|kc$+(+6  
temp=data; DGR[2C)@N  
} 8>U{>]WG  
int i1=l; \<cs:C\h7  
int i2=mid+1; v[k;R  
for(int cur=l;cur<=r;cur++){ ZGILV  
if(i1==mid+1) /INjP~C  
data[cur]=temp[i2++]; S511}KPbm/  
else if(i2>r) K]~! =j)v  
data[cur]=temp[i1++]; WJ%4IaT  
else if(temp[i1] data[cur]=temp[i1++]; ,]A|z ~q  
else 5Q)hl.<{o7  
data[cur]=temp[i2++]; <1t.f}}uX  
} T0:%,o  
} I&2)@Zw  
}XOTK^YA  
} ~>&Jks_Q  
4Ss4jUj  
改进后的归并排序:  "! -  
|hx"yy'ux  
package org.rut.util.algorithm.support; NOC8h\s}(  
h/'b(9fS  
import org.rut.util.algorithm.SortUtil; CcGE4BB  
sBN"eHg  
/** uPe&i5YR  
* @author treeroot p(B^](?  
* @since 2006-2-2 ,, 8hU7P  
* @version 1.0 3shRrCL0mf  
*/ }da}vR"iL  
public class ImprovedMergeSort implements SortUtil.Sort { Eo\pNz#)  
)$EmKOTt:  
private static final int THRESHOLD = 10; pr;n~E 'kq  
r6JQRSakR  
/* H0!LiazA>  
* (non-Javadoc) ^bD)Tg5K  
* dBWi1vTF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DGc5Lol~  
*/ hSl6 X3W  
public void sort(int[] data) { O V"5:){  
int[] temp=new int[data.length]; AVn?86ri  
mergeSort(data,temp,0,data.length-1); $Ph T:  
} teQ <v[W.  
5`_UIYcI  
private void mergeSort(int[] data, int[] temp, int l, int r) { '' Pu  
int i, j, k; 9$ VudE>;  
int mid = (l + r) / 2; TnuaP'xZ  
if (l == r) g!QX#_~Il  
return; b0(bL_,  
if ((mid - l) >= THRESHOLD) `>HM<Nn-0  
mergeSort(data, temp, l, mid); @IXvp3r  
else "dkDT7  
insertSort(data, l, mid - l + 1); /JqNiqvh  
if ((r - mid) > THRESHOLD) >'eY/>n{  
mergeSort(data, temp, mid + 1, r); j1 Ns|oph1  
else bjL8Wpk  
insertSort(data, mid + 1, r - mid); a)o-6  
7>-"r*W +z  
for (i = l; i <= mid; i++) { 3rxB]-  
temp = data; Th'B5:`  
} zfsGf 'U  
for (j = 1; j <= r - mid; j++) { =qJlSb  
temp[r - j + 1] = data[j + mid]; No\3kRB4bi  
} KbXENz&C  
int a = temp[l]; 4MFdhJoN  
int b = temp[r]; IPVD^a ?  
for (i = l, j = r, k = l; k <= r; k++) { Kggc9^ 7  
if (a < b) { _c z$w5`  
data[k] = temp[i++]; 9}*Pb6  
a = temp; lH%%iYBM  
} else { tM:%{az  
data[k] = temp[j--]; S5+W<Qs  
b = temp[j]; 7hzd.  
} c,yjsxETW  
} J4) ?hS  
} C j4ED  
:aO`q/d  
/** +|w%}/N  
* @param data m=4hi(g  
* @param l  LBIsj}e  
* @param i ^~7/hm:  
*/ j^T i6F>f  
private void insertSort(int[] data, int start, int len) { r%uka5@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #5 %\~ f  
} FJ+n- \  
} VF bso3q<j  
} 2(i@\dZCb<  
} h,fC-+H5  
(teK0s;t5k  
堆排序: mS9ITe M  
 Z,"f2UJ  
package org.rut.util.algorithm.support; #dj,=^1_14  
d69synEw>k  
import org.rut.util.algorithm.SortUtil; W#bOx0  
N51e.;  
/** xf7_|l  
* @author treeroot nB9(y4  
* @since 2006-2-2 FoX,({*Ko~  
* @version 1.0 AxAbU7m  
*/ %E"dha JY  
public class HeapSort implements SortUtil.Sort{ PR2;+i3  
/cX%XZg  
/* (non-Javadoc) NY3/mS3w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bH Nf>  
*/ 5OM*NT t  
public void sort(int[] data) { '89nyx&W  
MaxHeap h=new MaxHeap(); Gl6M(<f\5  
h.init(data); VBN=xg}  
for(int i=0;i h.remove(); <hBd #J  
System.arraycopy(h.queue,1,data,0,data.length); dcH@$D@~S  
} ^Z>Nbzr{  
{3qlx1w  
private static class MaxHeap{ -}CMNh   
K[^BRn  
void init(int[] data){ [Te"|K':  
this.queue=new int[data.length+1]; `L m9!?  
for(int i=0;i queue[++size]=data; .jv#<"DW  
fixUp(size); ?m\? #  
} K 9tr Iy$v  
} VUUE2k;^  
o^3X5})sv  
private int size=0; v/GZByco>  
iO dk)  
private int[] queue; "KKw\i  
O"ebrv  
public int get() { >|rU*+I`  
return queue[1]; V'8Rz#Gc5  
} 7m.>2U   
3{{Ew}kZm  
public void remove() { G0lg5iA<fC  
SortUtil.swap(queue,1,size--); r E&}B5PN=  
fixDown(1); 2o<aEn&7|e  
} Xk9 8%gv  
file://fixdown 'pHxO,vo  
private void fixDown(int k) { y4N2gBTKu  
int j; il[waUfmD  
while ((j = k << 1) <= size) { `6\u!#  
if (j < size %26amp;%26amp; queue[j] j++; /2x@Z>  
if (queue[k]>queue[j]) file://不用交换 NI85|*h  
break; :I(d-,C  
SortUtil.swap(queue,j,k); t8f:?  
k = j; >9Z7l63+}  
} zI$'D|A  
} YZZog6%  
private void fixUp(int k) { jL0=a.;  
while (k > 1) { eZ|_wB'r  
int j = k >> 1; lQqP4-E?  
if (queue[j]>queue[k]) 5I&Dk4v  
break; *:Uq ;)*  
SortUtil.swap(queue,j,k); 4G'-"u^g  
k = j; z#GrwE,r   
} =h\uC).t&  
} mCSt.n~  
FnCMr_  
} \ch4c9  
dYZB> OS  
} i}/Het+(  
}t0JI3  
SortUtil: ddwokXx (  
Lt_A&  
package org.rut.util.algorithm; |e91KmiqJ  
Ge ?Q)N  
import org.rut.util.algorithm.support.BubbleSort; +ctJV>  
import org.rut.util.algorithm.support.HeapSort; w ,-4A o2x  
import org.rut.util.algorithm.support.ImprovedMergeSort; Sr>5V  
import org.rut.util.algorithm.support.ImprovedQuickSort; qZ%0p*P#_  
import org.rut.util.algorithm.support.InsertSort; yJ*g ;  
import org.rut.util.algorithm.support.MergeSort; m1DrT>oN'  
import org.rut.util.algorithm.support.QuickSort; i?D)XXB85  
import org.rut.util.algorithm.support.SelectionSort; |w.h97fj  
import org.rut.util.algorithm.support.ShellSort; l}~9xa}:D|  
42=/$V  
/** oC}2 Z{  
* @author treeroot L}VQc9"gc  
* @since 2006-2-2 ^+O97<#6C  
* @version 1.0 B=HE i\55K  
*/ A2''v3-h8  
public class SortUtil { 59H~qE1Md  
public final static int INSERT = 1; &F.L*M  
public final static int BUBBLE = 2; oA+'9/UY  
public final static int SELECTION = 3; Kidbc Z  
public final static int SHELL = 4; 6E$ET5p&l  
public final static int QUICK = 5; &sooXKlv|  
public final static int IMPROVED_QUICK = 6; 0QY9vuhL<  
public final static int MERGE = 7; Ga\kvMtr  
public final static int IMPROVED_MERGE = 8; v+W4wD  
public final static int HEAP = 9; sMcN[r  
wPvYnhr|G-  
public static void sort(int[] data) { `S|T&|ad0  
sort(data, IMPROVED_QUICK); xTy)qN]P  
} `8kL=%(h  
private static String[] name={ W?gelu]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" lz4M)pL^  
}; #ds@!u+&  
7 b 8pWM  
private static Sort[] impl=new Sort[]{ M%2w[<-8c  
new InsertSort(), co*XW  
new BubbleSort(), j/uzsu+  
new SelectionSort(), a*qc  
new ShellSort(), 87rHW@\](  
new QuickSort(), |XJ|vQGU  
new ImprovedQuickSort(), 2XrYm"6w  
new MergeSort(), a"8H(HAlNn  
new ImprovedMergeSort(), d5'4RYfkQ  
new HeapSort() Go !{T  
}; cHon' tS  
.[o`TlG%  
public static String toString(int algorithm){ ~b})=7n.  
return name[algorithm-1]; Hm]\.ZEy  
} )Pv B^n  
DI=?{A  
public static void sort(int[] data, int algorithm) { gp4@6HuUd  
impl[algorithm-1].sort(data); YXIAVSnr  
} 6*s:I&  
[#2X  
public static interface Sort { c\VD8 :  
public void sort(int[] data); _f@nUv*  
} ddEV@2F  
<+: PTG/('  
public static void swap(int[] data, int i, int j) { LzD,]{CC5  
int temp = data; Sz>Lbs  
data = data[j]; i}v3MO\X  
data[j] = temp; !Aw.)<teW  
} {YEGy  
} \Z_29L w=  
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