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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。 fM,U|  
插入排序: &niROM,;K  
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package org.rut.util.algorithm.support; v[WbQ5AND  
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import org.rut.util.algorithm.SortUtil; 5#/" 0:2  
/** 9Y&,dBj+  
* @author treeroot l@7X gsey  
* @since 2006-2-2 SFAh(+t  
* @version 1.0 @bU(z$eB  
*/ pn?c6K vO  
public class InsertSort implements SortUtil.Sort{ 10xo<@l  
<kIg>+  
/* (non-Javadoc) v]+,kbT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ](c[D9I!8  
*/ SOQm>\U'i  
public void sort(int[] data) { 8 St`,Tq)  
int temp; <_&tP=h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'PTWC.C?9  
} . OA_)J7  
} $$8xdv#  
} f!2`N  
(r,tU(  
} d4<Ic#  
uV?[eiezD0  
冒泡排序: )>08{7  
sXxF5&AF0  
package org.rut.util.algorithm.support; Kt3/C'zu  
*L> gZ`Q  
import org.rut.util.algorithm.SortUtil; jz(}P8  
NMb`d0;(  
/** Cc^`M9dP  
* @author treeroot b$)b/=2  
* @since 2006-2-2 E`%Ewt$Z  
* @version 1.0 \:ntqj&A|  
*/ }TD$ !  
public class BubbleSort implements SortUtil.Sort{ 7Fb |~In<Z  
tn};[r  
/* (non-Javadoc) W _(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -~T?xs0_  
*/ v`8dRVN  
public void sort(int[] data) { y)_T!&ze  
int temp; Pda(O;aNU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F3[3~r  
if(data[j] SortUtil.swap(data,j,j-1); )P>Cxzs  
} bAv>?Xqa  
} (@Q@B%!!K  
} U{n< n8  
} KA1Z{7UK%  
=\H.C@r  
} _uU}J5d.  
~3 4Ly  
选择排序: #7K&x.w$  
!Tuc#yFw  
package org.rut.util.algorithm.support; O@St^o*A}  
4RYK9=NH  
import org.rut.util.algorithm.SortUtil; ~9#[\/;"  
zMasA  
/** o =)hUr  
* @author treeroot I8 Ai_^P  
* @since 2006-2-2 mf]1mG})  
* @version 1.0 g,/gApa  
*/ |KFRC)g  
public class SelectionSort implements SortUtil.Sort { Q.: SIBP  
Yy]^_,r  
/* Fa78yY+6  
* (non-Javadoc) #MYhKySku  
* !7XAc,y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z!o&};_j  
*/ @WVpDhG  
public void sort(int[] data) { ImQ?<g8$  
int temp; `Cy-*$$  
for (int i = 0; i < data.length; i++) { ++ !BSQ e  
int lowIndex = i; )HWf`;VQ  
for (int j = data.length - 1; j > i; j--) { ~ldqg2c  
if (data[j] < data[lowIndex]) { xv;'27mUt  
lowIndex = j; +BcJHNIB  
} v#i,pBj  
} 7N0V`&}T  
SortUtil.swap(data,i,lowIndex); .} <$2.  
} .zf#S0y%(  
} aV3:wp]Gn  
!IlsKMZ  
} a!YpSFr  
}Jkz0JY~  
Shell排序: "C 7-^R#  
m }I@:s2  
package org.rut.util.algorithm.support; H SEfpbh  
L2:v#c()#)  
import org.rut.util.algorithm.SortUtil; z$OKn#%T  
_r0[ z  
/** o!6gl]U'y9  
* @author treeroot N3 qtq9{  
* @since 2006-2-2 ;A)w:"m  
* @version 1.0 qTFktJZw  
*/ 3>%oGbo  
public class ShellSort implements SortUtil.Sort{ ??Zh$^No:  
Z>1\|j  
/* (non-Javadoc) f,{O%*PUA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h ,;f6  
*/ >g8H  
public void sort(int[] data) { D.?Rc'y D  
for(int i=data.length/2;i>2;i/=2){ :^".cs?g  
for(int j=0;j insertSort(data,j,i); luD.3&0n  
} *|S.[i_7  
} ^6Y4=  
insertSort(data,0,1); K~Lh'6  
} #hPa:I$Oc  
(bnyT?p%  
/** ,YzrqVY  
* @param data )`5k fj  
* @param j w yi n  
* @param i _(=[d  
*/ 92g#QZs&W  
private void insertSort(int[] data, int start, int inc) { ?g*#l d()  
int temp; 3B|?{U~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .|x\6 jf  
} )i@j``P  
} F&? &8.  
} =8BMCedH|  
^gx`@^su  
} /7Z5_q_  
.*+?]  
快速排序: 9Qja|;  
f S-(Kmh  
package org.rut.util.algorithm.support; >D20f<w(H  
c\.Hs9T >  
import org.rut.util.algorithm.SortUtil; T;/Y/Fd  
?`R;ZT)U-  
/** ZZ/F}9!=  
* @author treeroot w\wS?E4G  
* @since 2006-2-2 )+ }\NCFh  
* @version 1.0 D*!p8J8Ku  
*/ <)01]lKH  
public class QuickSort implements SortUtil.Sort{ *xY}?vSs  
#gjhs"$~  
/* (non-Javadoc) (' yBIb\ue  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MVe:[=VOT|  
*/ 1&\ A#  
public void sort(int[] data) { ]ADj 9  
quickSort(data,0,data.length-1); Y![m'q}K  
} d8l T+MS=  
private void quickSort(int[] data,int i,int j){ r)S tp`p  
int pivotIndex=(i+j)/2; #NU;$ &  
file://swap @wa2Z  
SortUtil.swap(data,pivotIndex,j); 9C;Hm>WEpP  
,khB*h14;h  
int k=partition(data,i-1,j,data[j]); t+C9QXY  
SortUtil.swap(data,k,j); 72J@Dc  
if((k-i)>1) quickSort(data,i,k-1); dg#w/}}m  
if((j-k)>1) quickSort(data,k+1,j); 3/+r*lv>X  
lP$bxUNt  
} JBY`Y ]V3  
/** \Km gFyF  
* @param data !ho~@sc{W  
* @param i ,+`1/  
* @param j 3{wr*L1%-~  
* @return v/dyu  
*/ frB~ajXK  
private int partition(int[] data, int l, int r,int pivot) { v2X>%  
do{ Nr24Rv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); '9O4$s1  
SortUtil.swap(data,l,r); zMZP3 xir  
} Skm$:`u;  
while(l SortUtil.swap(data,l,r); HoA[U T  
return l; <HReh>)[  
} j SLC L'  
y*i_Ec\h  
} %Ot2bhK;  
IB~`Ht8 b  
改进后的快速排序: C)w11$.YQ9  
Cso!VdCX  
package org.rut.util.algorithm.support; s{I Xth6  
(;1rM}B;1  
import org.rut.util.algorithm.SortUtil; `U-i{i  
>cVEr+r9t  
/** |g o jb  
* @author treeroot P3[!-sv  
* @since 2006-2-2 .m',*s<CMQ  
* @version 1.0 qIm?F>> @  
*/ 5v1f?btc  
public class ImprovedQuickSort implements SortUtil.Sort { -p|JJx?r  
mM*jdm(!  
private static int MAX_STACK_SIZE=4096; RPH]@  
private static int THRESHOLD=10; Ps<6kQ(  
/* (non-Javadoc) !Db 0r/_:G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^;on  
*/ ?|Q[QP  
public void sort(int[] data) { _oOE MQb  
int[] stack=new int[MAX_STACK_SIZE]; )TYrb:M'm  
E: EXp7  
int top=-1; "S#}iYp  
int pivot; R~9\mi5^UH  
int pivotIndex,l,r; :`FL95  
iF.eBL%  
stack[++top]=0; 0I|IL]JL  
stack[++top]=data.length-1; |$$gj[+^  
#. mc+n:I  
while(top>0){ G=rgL'{  
int j=stack[top--]; ;W ZA  
int i=stack[top--]; +f#o ij  
,mpvGvAI  
pivotIndex=(i+j)/2; =P* YwLb  
pivot=data[pivotIndex]; <p_r{  
1_chO?&,I  
SortUtil.swap(data,pivotIndex,j); `S&(J2KV  
#g)$m}tv?  
file://partition HiTn5XNf  
l=i-1; #;4afj:2g  
r=j; Z0fl]3p  
do{ )(&Z&2~A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gY)NPi}!`  
SortUtil.swap(data,l,r); f>g< :.k*  
} f-Yp`lnn.d  
while(l SortUtil.swap(data,l,r); ym>>5(bni  
SortUtil.swap(data,l,j); #2N']VP  
-}2'P)Xp  
if((l-i)>THRESHOLD){ f7y a0%N  
stack[++top]=i; 0RaE!4)!;  
stack[++top]=l-1; ?kOtK  
} B.zRDB}i=  
if((j-l)>THRESHOLD){ #bFJ6;g=V  
stack[++top]=l+1; wi{qN___  
stack[++top]=j; yrp;G_  
} Tt,<@U[/}  
s)?=4zJ  
} J;?#Zt]`L  
file://new InsertSort().sort(data); SV-M8Im73z  
insertSort(data); QG~4 <zy  
} egOZ.oV  
/** 1M%'Xe7  
* @param data zn5U(>=c  
*/ p&Os5zw;|  
private void insertSort(int[] data) { D{%l 4og  
int temp; }3G`f> s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /h/f&3'h  
} zli@XZ#  
} u}zCcWP|L  
} ]Q?`|a+i  
H9d! -9I  
} Mq!vu!  
j3<|X  
归并排序: (}$pf6s  
P>*B{fi^  
package org.rut.util.algorithm.support; *aE/\b  
Y)X 'hk)5|  
import org.rut.util.algorithm.SortUtil; ~Ibq,9i  
vDG AC'  
/** |sQC:y>  
* @author treeroot %'}zr>tx:  
* @since 2006-2-2 hJuR,NP  
* @version 1.0 o\n9(ao  
*/ ;S+UD~i[Bu  
public class MergeSort implements SortUtil.Sort{ HnDz4eD  
i_ha^mq3  
/* (non-Javadoc) p};B*[ki  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J$9`[^pV  
*/ PS" ,  
public void sort(int[] data) { %kod31X3<  
int[] temp=new int[data.length]; xJ/<G$LNJ0  
mergeSort(data,temp,0,data.length-1); 5xHP5+&  
} WtT* 1Z  
J%_m`?  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9Ai e$=  
int mid=(l+r)/2; 3ID 1>  
if(l==r) return ; pZpAb+  
mergeSort(data,temp,l,mid); ~EYsUC#B_  
mergeSort(data,temp,mid+1,r); (\CT "u-  
for(int i=l;i<=r;i++){ f)~j'e  
temp=data; +[ +4h}?  
} QD<GXPu?N  
int i1=l; hKZ<PwBi  
int i2=mid+1; Bh'_@PHP  
for(int cur=l;cur<=r;cur++){ h($XR+!#  
if(i1==mid+1) 2ZZ%BV!s  
data[cur]=temp[i2++]; K?M{=$N  
else if(i2>r) 17-D\ +}  
data[cur]=temp[i1++]; C-vFl[@a0  
else if(temp[i1] data[cur]=temp[i1++]; vG`;2laY  
else /7s^OkQ  
data[cur]=temp[i2++]; *bi!iz5F  
} *.4VO+^  
} &, =Z  
MLu@|Xgh  
} QYm]&;EI  
Gr1WBYK  
改进后的归并排序: /-in:gX8  
mz|#K7:  
package org.rut.util.algorithm.support; M_<? <>|  
y:C=Ni&,"  
import org.rut.util.algorithm.SortUtil; ]c67zyX=%  
D*!UB5<>/t  
/** ^)qOILn  
* @author treeroot NuL.l__W  
* @since 2006-2-2 x] e &G!|  
* @version 1.0 Bl\/q83(  
*/ B)q 5m y  
public class ImprovedMergeSort implements SortUtil.Sort { 7GY3 _`  
Ne 2tfiI`  
private static final int THRESHOLD = 10; *B$$6'hi`  
91|0{1  
/* OA_WjTwDs  
* (non-Javadoc) 'Gr}<B$A3  
* Q+Sx5JUR~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 12D>~#J  
*/ u$vA9g4  
public void sort(int[] data) { J )*7JX  
int[] temp=new int[data.length]; E41ay:duAl  
mergeSort(data,temp,0,data.length-1); )~u<u:N  
} RotWMGNK  
vr:5+wew  
private void mergeSort(int[] data, int[] temp, int l, int r) { +2qCH^80  
int i, j, k; | Ns-l (l  
int mid = (l + r) / 2; E`M, n ,  
if (l == r) T@Q,1^?i  
return; *bOgRM[  
if ((mid - l) >= THRESHOLD) <-Hw@g  
mergeSort(data, temp, l, mid); PP]Z~ne0X  
else h$[tEmD%  
insertSort(data, l, mid - l + 1); ]J] ~i[  
if ((r - mid) > THRESHOLD) \dB)G<_  
mergeSort(data, temp, mid + 1, r); ,V>7eQt?  
else sI&|qK-(  
insertSort(data, mid + 1, r - mid); <Qx]"ZP%  
Hzn6H4Rc  
for (i = l; i <= mid; i++) { R6xJw2;_  
temp = data; !4?QR  
} h;+bHrKji  
for (j = 1; j <= r - mid; j++) { |qp^4vq.p  
temp[r - j + 1] = data[j + mid]; SU8vz/\%y  
} %o4d(C B  
int a = temp[l]; w~}*MsB  
int b = temp[r]; 9fj8r3 F#  
for (i = l, j = r, k = l; k <= r; k++) { eeOE\  
if (a < b) { 0@BhRf5  
data[k] = temp[i++]; ::&hfHR*P  
a = temp; lDK<gd  
} else { t XbMP  
data[k] = temp[j--]; rQrh(~\:  
b = temp[j]; @v:p)|Ne;  
} cBGR%w\t%  
} ^U5g7Emf  
} 8c1ma  
Ig.9:v`  
/** o 9?#;B$  
* @param data [f8mh88 r  
* @param l )C1ihm!7\  
* @param i GIs *;ps7w  
*/ gO9\pI 2  
private void insertSort(int[] data, int start, int len) { K:<0!C!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *# 7 1aZ  
} n0T>sE -9  
} D.ajO^[  
} ?gGmJl  
} %]KOxaf_z  
>3,t`Z:  
堆排序: gf]k@-)  
2B !Bogs  
package org.rut.util.algorithm.support;  4u.v7r  
;d#`wSF`G  
import org.rut.util.algorithm.SortUtil; i*3*)ly  
+{7/+Zz  
/** W["c3c  
* @author treeroot vIK+18v7  
* @since 2006-2-2 7)FI_uW  
* @version 1.0 Y/Dah*  
*/ Ln3<r&&Jz  
public class HeapSort implements SortUtil.Sort{ |B` mWZ'"  
:wR aB7  
/* (non-Javadoc) U~nW>WJ+.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ej^pFo  
*/ '|jN!y^ 2p  
public void sort(int[] data) { ?Z{:[.  
MaxHeap h=new MaxHeap(); :5 zXW;s  
h.init(data); {0?]weN*  
for(int i=0;i h.remove(); ;vkk$ -  
System.arraycopy(h.queue,1,data,0,data.length); ]NRQM8\  
} :jP4GCxU|  
%s(Ri6R&  
private static class MaxHeap{ D'UYHc {  
;bh[TmQTJ  
void init(int[] data){ \0'0)@uziQ  
this.queue=new int[data.length+1]; |GqKa  
for(int i=0;i queue[++size]=data; 0DR:qw  
fixUp(size); g"P!KPrf1p  
} /z(;1$Ld6{  
} V39`J*fI  
D( YNa  
private int size=0; F8T.}qI  
4^>FN"Ve`B  
private int[] queue; M<KWx'uV  
!I UH 5  
public int get() { >AUj4d  
return queue[1]; &i8UPp%  
} 08pG)_L  
?A\[EI^  
public void remove() { |."thTO  
SortUtil.swap(queue,1,size--); u,f$cR  
fixDown(1); 9-6E(D-ux  
} rf[w&~R  
file://fixdown Z'ZN^j{  
private void fixDown(int k) { KgCQ4w9  
int j; HT@/0MF{J  
while ((j = k << 1) <= size) { 0)Wrfa  
if (j < size %26amp;%26amp; queue[j] j++; /CT g3Q"KQ  
if (queue[k]>queue[j]) file://不用交换 hOTqbd}  
break; 6t0-u~  
SortUtil.swap(queue,j,k); *(pmFEc  
k = j; X61p xPa  
} fg8"fbG`:  
} =w#sCy  
private void fixUp(int k) { uz8Y)b  
while (k > 1) { 1|8<!Hx#-  
int j = k >> 1; |mO4+:-~D+  
if (queue[j]>queue[k]) >kN%R8*Sx  
break; 5kju{2`GF  
SortUtil.swap(queue,j,k); 99]&Xj  
k = j; CKau\N7T  
} k5X& |L/  
} ,vE)/{:d  
<T0+-]i  
} !U?Z<zh  
5[\LQtM  
} Bl6>y/  
k#Bq8d  
SortUtil: }c1?:8p  
D$OUy}[2`.  
package org.rut.util.algorithm; 8E:d!?<^&I  
{YoK63b$  
import org.rut.util.algorithm.support.BubbleSort; q=+AN</  
import org.rut.util.algorithm.support.HeapSort; \as^z!<  
import org.rut.util.algorithm.support.ImprovedMergeSort; 'GJ'Vli  
import org.rut.util.algorithm.support.ImprovedQuickSort; pk&;5|cCD  
import org.rut.util.algorithm.support.InsertSort; i[\`]C{gf  
import org.rut.util.algorithm.support.MergeSort; 7yDWcm_y  
import org.rut.util.algorithm.support.QuickSort; G$HXc$OY  
import org.rut.util.algorithm.support.SelectionSort; Y8$,So>~  
import org.rut.util.algorithm.support.ShellSort; _,C>+dv)  
0wlKBwf`J  
/** S7fX1y[  
* @author treeroot ]= EYju@  
* @since 2006-2-2 @UG%B7  
* @version 1.0 o[ua$+67E  
*/ @|hn@!YK  
public class SortUtil { f(r=S Xa*  
public final static int INSERT = 1; )t#v55M  
public final static int BUBBLE = 2; ja_.{Zv  
public final static int SELECTION = 3; WU" Lu  
public final static int SHELL = 4; ha -KfkPFE  
public final static int QUICK = 5; `ywI+^b  
public final static int IMPROVED_QUICK = 6; (TjY1,f!H  
public final static int MERGE = 7; ztRe\(9bL  
public final static int IMPROVED_MERGE = 8; ),u)#`.l G  
public final static int HEAP = 9; ]@rt/ eX  
}+wvZq +c  
public static void sort(int[] data) { <RFT W}f!  
sort(data, IMPROVED_QUICK); zZ11J0UI  
} ^zs]cFN#%  
private static String[] name={ u}:p@j}Zv  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %0<-5&GE  
}; dQkp &.  
Q Jnji  
private static Sort[] impl=new Sort[]{ dhAkD-Lh  
new InsertSort(), c<c"n'  
new BubbleSort(), HT: p'Yyi  
new SelectionSort(), *sPG,6>  
new ShellSort(), j0F'I*Z3  
new QuickSort(), P nxxW?  
new ImprovedQuickSort(), ff3HR+%M  
new MergeSort(), 0:SR29(p1  
new ImprovedMergeSort(), 3cH`>#c  
new HeapSort() MkCq$MA  
}; ER ^#J**  
)PNeJf|@  
public static String toString(int algorithm){ e~+VN4D&b>  
return name[algorithm-1]; 8FmRD  
} AzmISm  
9:\YEs"  
public static void sort(int[] data, int algorithm) { PU\?eA  
impl[algorithm-1].sort(data); 2Kg+SLU[~  
} [!k#au+#c  
4-wCk=I  
public static interface Sort { {}W9m)I  
public void sort(int[] data); <.HDv:  
} q|N/vkqPz  
!jIpgs5  
public static void swap(int[] data, int i, int j) { S=R}#  
int temp = data; <Z -d5D>  
data = data[j]; 1l(_SD;90t  
data[j] = temp; #go!"H L  
} l\NVnXv:>  
} P0 va=H  
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