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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。 TvG:T{jwy  
插入排序: %oKqK >S)  
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package org.rut.util.algorithm.support; XoiYtx53  
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import org.rut.util.algorithm.SortUtil; 8 ]MzOGB8  
/** D!T4k]^  
* @author treeroot Qbpl$L  
* @since 2006-2-2 x[~OVG0M*  
* @version 1.0 y-q?pqt  
*/ s@[t5R  
public class InsertSort implements SortUtil.Sort{ ~teW1lMu(  
D#[ :NXahn  
/* (non-Javadoc) ;fME4Sp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FY}*Z=D%  
*/ YaT+BRh?  
public void sort(int[] data) { &b")`p&K  
int temp; C|@k+^S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]hVXFHrR  
} !!O{ ppM  
} I>o; %}  
} }JMkM9]  
_W@Fk)E6N  
} zP'pfBgbJW  
-mw \?\2{  
冒泡排序: w} q@VVB%  
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package org.rut.util.algorithm.support; }lpm Hvs  
Rj;e82%%N  
import org.rut.util.algorithm.SortUtil; xxcDd_z  
H[k3)r2  
/** FtDA k?  
* @author treeroot $uB(@Ft.  
* @since 2006-2-2 nJH%pBc  
* @version 1.0 rh&Eu qE%  
*/ Z9~Wlt'?  
public class BubbleSort implements SortUtil.Sort{ Nb^:_0&H@  
G6VHl:e7z  
/* (non-Javadoc) U)]natB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lG#&1  
*/ tvxcd*{  
public void sort(int[] data) { =,G(1#  
int temp; /O9EI'40)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6mpUk.M"  
if(data[j] SortUtil.swap(data,j,j-1); >&Q. .`q  
} tKGsrgoV  
} T-i]O*u  
} J c^ozw  
} {5-{f=Rk  
OVf|4J/Yx  
} 6dp_R2zH~o  
"*\3.`Kd  
选择排序: Gn4b\y%%  
rqJj!{<B  
package org.rut.util.algorithm.support; ZM`_P!G  
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import org.rut.util.algorithm.SortUtil; ~kT{O!x}4  
cs;Gk:  
/** Vs"Q-?  
* @author treeroot 7Apbi}")  
* @since 2006-2-2 !iOu07<n&D  
* @version 1.0 R)Fl@ Tn  
*/ L-gF$it\*b  
public class SelectionSort implements SortUtil.Sort { P~Owvs/=  
.6#2i <oPW  
/* qrYeh`Mv  
* (non-Javadoc) qrh7\`,.m/  
* *.l=> #qF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0k<%l6Bq  
*/ t]%R4ymV  
public void sort(int[] data) { CFxs`C^  
int temp; _nq n|  
for (int i = 0; i < data.length; i++) { n//a;m  
int lowIndex = i; ')RK(I  
for (int j = data.length - 1; j > i; j--) { ~zRd||qv  
if (data[j] < data[lowIndex]) { u\?u}t v  
lowIndex = j; ,1L^#?Q~  
} P 'k39  
} A79SAheX#  
SortUtil.swap(data,i,lowIndex); O0RQ}~$'m  
} WLH2B1_):  
} Ta$<#wb  
5w3'yA<vE  
} i%w'Cs0y  
2Y{9Df  
Shell排序: 5S bSz!s`$  
']x]X ,  
package org.rut.util.algorithm.support; ' ?t{-z,  
F$C:4c  
import org.rut.util.algorithm.SortUtil; gO36tc:ce  
dtm@G|Ij  
/** tnntHQ&b  
* @author treeroot p*A//^wQ  
* @since 2006-2-2 HtlXbzN%)  
* @version 1.0 ><HXd+- sd  
*/ nor`w,2VF  
public class ShellSort implements SortUtil.Sort{ "`zw(  
i8F~$6C  
/* (non-Javadoc) &bb*~W-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Jp>2d  
*/ #=rI[KI  
public void sort(int[] data) { WObfHAp.  
for(int i=data.length/2;i>2;i/=2){ gnt[l0m  
for(int j=0;j insertSort(data,j,i); gV0ZZ"M  
} +dRTHz  
} NDi@x"];  
insertSort(data,0,1); ;x"B ):?\  
} Sw~<W%! ?  
l8Ox]%F  
/** DpAuI w7|  
* @param data _G42|lA$/  
* @param j 0@KBQv"v  
* @param i $: -Ptm@  
*/ [z?XVl<  
private void insertSort(int[] data, int start, int inc) { -J:vYhq|g  
int temp; Qw ED>G|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (1R,   
} @: NrC76  
} |<S9nZg%p  
} ^?,/_3  
;X>KP,/r$  
} KW)yTE<  
yl*S|= 8;k  
快速排序: uAJC Q)@  
_h#G-  
package org.rut.util.algorithm.support; /#HY-b  
7@ZL(G  
import org.rut.util.algorithm.SortUtil; w% M0Mu  
(jXgJ" m  
/** }9'rTLM  
* @author treeroot WWY9U  
* @since 2006-2-2 ='f>p+*c%  
* @version 1.0 nt4>9;  
*/ tG6 o^  
public class QuickSort implements SortUtil.Sort{ @$aCUJ/mE  
BZE19!  
/* (non-Javadoc) GXwV>)!x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =,sMOJ c>  
*/ 2'++G[z  
public void sort(int[] data) { C>LkU|[  
quickSort(data,0,data.length-1); j1g^Q$B>m  
} B^oXUEOImq  
private void quickSort(int[] data,int i,int j){ PR Y)hb;1  
int pivotIndex=(i+j)/2; Ts^IA67&<  
file://swap 2o,%O91p  
SortUtil.swap(data,pivotIndex,j); (FBKP#x)^  
" jy'Dpy0m  
int k=partition(data,i-1,j,data[j]); Lz4iLLP  
SortUtil.swap(data,k,j); fO9e ;  
if((k-i)>1) quickSort(data,i,k-1); =U?"#   
if((j-k)>1) quickSort(data,k+1,j); U,/>p=s  
X)Kd'6zg  
} 0L|A  
/** . a~J.0co  
* @param data D:f0W v  
* @param i K'y;j~`-  
* @param j ~6R| a  
* @return l( "_JI  
*/ B4I|"5G2y  
private int partition(int[] data, int l, int r,int pivot) { }F-WOQ  
do{ BK,= (;d3  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kz+P?mopm  
SortUtil.swap(data,l,r); a(bgPkPP  
} ^oj)#(3C  
while(l SortUtil.swap(data,l,r); m"`&FA  
return l; .aF+>#V=Q  
} Riw#+#r]/  
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} 7kHEY5s "  
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改进后的快速排序: ,xNuc$8Jd  
MAhcwmZNy  
package org.rut.util.algorithm.support; ZY=x$($f  
 |G{TA  
import org.rut.util.algorithm.SortUtil; Ly lw('zZ  
Wn<3|`c  
/** rk{DrbRx  
* @author treeroot MWu67">"  
* @since 2006-2-2 RD<l<+C^~  
* @version 1.0 GRS[r@W[1  
*/ h0L *8P`t  
public class ImprovedQuickSort implements SortUtil.Sort { q B5cF_  
ggfL d r  
private static int MAX_STACK_SIZE=4096; 7 i,}F|#8  
private static int THRESHOLD=10; YeK PoW  
/* (non-Javadoc) \XD&0inv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 f).J  
*/ x<4-Q6'{S  
public void sort(int[] data) { tUH#%  
int[] stack=new int[MAX_STACK_SIZE]; eo4;?z  
Tt<Ry'Z$3  
int top=-1; y7txIe!<5  
int pivot; ({87311%  
int pivotIndex,l,r; @;!s"!~sv  
I#tn/\n  
stack[++top]=0; 43^%f-J 5  
stack[++top]=data.length-1; QG$LbuZ`  
fE8/tx](  
while(top>0){ K FvNsqd  
int j=stack[top--]; -$!`8[fM  
int i=stack[top--]; zVFz}kJa  
4Bsx[~ u&  
pivotIndex=(i+j)/2; J.N%=-8  
pivot=data[pivotIndex]; FhVi|V a  
-Xb]=Yf-  
SortUtil.swap(data,pivotIndex,j); 3V>2N)3`A  
u(S~V+<@Z  
file://partition ^&>(_I\w.6  
l=i-1; "JzQCY^C  
r=j; +q[puFfl  
do{ wM8Gz.9,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,IX:u1mO  
SortUtil.swap(data,l,r); RoFy2A=_  
} BrcT`MM[(=  
while(l SortUtil.swap(data,l,r); D7T(B=S6  
SortUtil.swap(data,l,j); -$yNJ5F`  
: z*OAl"  
if((l-i)>THRESHOLD){ )o-rg  
stack[++top]=i; u2,V34b-  
stack[++top]=l-1; zZE 2%fqM  
} maW,YOyRN  
if((j-l)>THRESHOLD){ Z<T%:F  
stack[++top]=l+1; `uo'w:Q  
stack[++top]=j; WB<_AIt+  
} o*& D;  
O:3LA-vA  
} tEhYQZ  
file://new InsertSort().sort(data); `],'fT|,S  
insertSort(data); xcz[w}{eEq  
} hY X H9:  
/** 8DHohhN  
* @param data `&xo;Vnc  
*/ u?6L.^Op  
private void insertSort(int[] data) { JFf*v6:,  
int temp; 0 UdAF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6fV%[.RR  
} /<,LM8n  
} x@/ N9*  
} Vf<VKP[9K  
,5J-C!C  
} #-?C{$2I  
xLhN3#^m  
归并排序: Jv(9w[  
G Xx7/X  
package org.rut.util.algorithm.support; Ct2m l  
\l)<NZ\  
import org.rut.util.algorithm.SortUtil; C":i56  
owHV&(Go(B  
/** `D)ay  
* @author treeroot V8AF;1c?-'  
* @since 2006-2-2 CGmObN8~'F  
* @version 1.0 r,F~Vwa}  
*/ >; a_i>[  
public class MergeSort implements SortUtil.Sort{ 3>LyEXOW  
~gU.z6us  
/* (non-Javadoc) .PjJ g^^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P>q"P1&{  
*/ $ qOV#,@  
public void sort(int[] data) { FgA'X<  
int[] temp=new int[data.length]; Ucnj7>+"  
mergeSort(data,temp,0,data.length-1); 44;ZX$HL  
} H{}0- 0o  
F-K=Ot j  
private void mergeSort(int[] data,int[] temp,int l,int r){ UykOQ-2-n  
int mid=(l+r)/2; `-qRZh@E  
if(l==r) return ; fu3~W  
mergeSort(data,temp,l,mid); m=;0NLs4  
mergeSort(data,temp,mid+1,r); l"9.zPvT<  
for(int i=l;i<=r;i++){ R7axm<PR=  
temp=data; 9e^HTUFbG  
} 8z,i/:  
int i1=l; t\YN\`XD  
int i2=mid+1; MZ" yjQA  
for(int cur=l;cur<=r;cur++){ 7+^9"k7  
if(i1==mid+1) XP#j9CF#.  
data[cur]=temp[i2++]; g )H>Uu5@  
else if(i2>r) 1O" Mo  
data[cur]=temp[i1++]; ERSo&8  
else if(temp[i1] data[cur]=temp[i1++]; 8Q $fXB  
else \;w$"@9  
data[cur]=temp[i2++]; q:Lw!'Z h  
} %4X#|22n  
} }9Yd[`  
N 6CWEIJ  
} ];@"-H  
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改进后的归并排序: G)qNu}  
yO@KjCv"  
package org.rut.util.algorithm.support; WH`E=p^x4  
Be?b| G!M  
import org.rut.util.algorithm.SortUtil; L`"PaIMz  
&{#4^.Q  
/** WxNPAJ6YH  
* @author treeroot K(*QhKX  
* @since 2006-2-2 <hG=0Zcr  
* @version 1.0 Q_p!;3  
*/ Ie3 F  
public class ImprovedMergeSort implements SortUtil.Sort { $L|YllD%  
\5g7_3,3W  
private static final int THRESHOLD = 10; OyTEd5\3  
SSi-Z  
/* HS1Gy/6'  
* (non-Javadoc) }(}+I}&~  
* q2qbbQ6H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \U^0E> d  
*/ ^1d"Rqtv  
public void sort(int[] data) { >3R%GNw  
int[] temp=new int[data.length]; 1PwqW g-\\  
mergeSort(data,temp,0,data.length-1); yc|j]?  
} OKDBzl  
FcR(uv<  
private void mergeSort(int[] data, int[] temp, int l, int r) { >s\j/yM  
int i, j, k; eBZ^YY<*g  
int mid = (l + r) / 2; &?.k-:iN  
if (l == r) UNc!6Q-.  
return; J N5<=x5r  
if ((mid - l) >= THRESHOLD) JXR_klx  
mergeSort(data, temp, l, mid); 99T_y`df  
else n}8J-/(|+  
insertSort(data, l, mid - l + 1); MGUzvSf  
if ((r - mid) > THRESHOLD) /mELnJ^  
mergeSort(data, temp, mid + 1, r); 8"2 Y$*)(  
else >eHSbQu/Bu  
insertSort(data, mid + 1, r - mid); c*+yJNm3>  
I+ZK \?Rs  
for (i = l; i <= mid; i++) { MMs#Y1dH  
temp = data; kNX"Vo]1  
} <|= UrG  
for (j = 1; j <= r - mid; j++) { 5l"EQ9  
temp[r - j + 1] = data[j + mid]; d8 1u  
} $4yv)6G  
int a = temp[l]; h-rPLU;Bw  
int b = temp[r]; 0Xmp)_vba  
for (i = l, j = r, k = l; k <= r; k++) { *&VH!K#@{  
if (a < b) { chjXsq#Q^  
data[k] = temp[i++]; mmC&xZ5f  
a = temp; _C` cO  
} else { /I2RU2|B  
data[k] = temp[j--]; }{Y)[w#R  
b = temp[j]; ?b?`(JTR  
} cnm&o C 6  
} !mFx= +  
} )+]8T6~ N  
; z_ZZ(W  
/** lWj|7  
* @param data CJA5w[m  
* @param l x\qS|q\N  
* @param i odxsF(Q0p  
*/ KjR^6v  
private void insertSort(int[] data, int start, int len) { b2;+a(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !,}W|(P)  
} -uZ bVd  
} ZKKz?reM'  
} 8y;W+I(71  
} %GUu{n<6  
b&.j>=  
堆排序: 9z9z:PU  
HC,YmO:df"  
package org.rut.util.algorithm.support; 0RY{y n3  
I(fq4$  
import org.rut.util.algorithm.SortUtil; 9g3J{pKcZ  
2.)@u~^Q  
/** k$</7 IuH  
* @author treeroot +W+O7SK\y  
* @since 2006-2-2  j I  
* @version 1.0 *ayn<Vlh`^  
*/ fu|N{$h%X  
public class HeapSort implements SortUtil.Sort{ 2kV[A92s  
n`";ctQT  
/* (non-Javadoc) $ JI`&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l1^/Q~u  
*/ '0g1v7Gx  
public void sort(int[] data) { loVUB'OSv  
MaxHeap h=new MaxHeap(); `{fqnNJE  
h.init(data); G1MuH%4  
for(int i=0;i h.remove(); 0'!v-`.  
System.arraycopy(h.queue,1,data,0,data.length); *z4n2"<l  
} O/\L0\T  
1Sox@Ko  
private static class MaxHeap{ BcaMeb-Z  
uG2(NwOL  
void init(int[] data){ xz#;F ,`ZR  
this.queue=new int[data.length+1]; wH1 E7LY|R  
for(int i=0;i queue[++size]=data; Q!/<=95E  
fixUp(size); G v[W)+3f  
} c;_GZ}8  
} 9`}Wp2  
GF5WR e(E  
private int size=0; 6U;pYWht  
(g,lDU[=  
private int[] queue; ^,zE Nqg7  
Mw!?2G[|  
public int get() { }J .f 5WaG  
return queue[1]; J{' u  
} 2V(ye9  
9 v)p0  
public void remove() { D+{h@^C9Z  
SortUtil.swap(queue,1,size--); lJ@2N$w  
fixDown(1); xkR--/f  
} /km^IH  
file://fixdown "~x\bSY  
private void fixDown(int k) { 9 O| "Ws>{  
int j; kzr9-$eb  
while ((j = k << 1) <= size) { :)}iWKAse  
if (j < size %26amp;%26amp; queue[j] j++; u2K{3+r`'  
if (queue[k]>queue[j]) file://不用交换 k$kq|  
break; ]g-(|X~>  
SortUtil.swap(queue,j,k); KquHc-fzqr  
k = j; sKIWr{D  
} tr"iluwGc  
} @K36?d]e  
private void fixUp(int k) { kRNr`yfN  
while (k > 1) { &,+G}  
int j = k >> 1; CYrVP%xRA  
if (queue[j]>queue[k]) `),7*gn*)  
break; h!56?4,%Y  
SortUtil.swap(queue,j,k); d{&+xl^ll  
k = j; bTZ/$7pp9  
} ju8tNL,J  
} G T#hqt'1x  
pI7\]e  
}  fI[tU(x  
aWek<Y~+  
} dluNA(Xc-  
'-3AWBWI1  
SortUtil: :FwXoJc_+5  
<.( IJ  
package org.rut.util.algorithm; )hK5_]"lmj  
c#nFm&}dm  
import org.rut.util.algorithm.support.BubbleSort; O_0|Q@  
import org.rut.util.algorithm.support.HeapSort; dgpo4'c}  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5%(J+d  
import org.rut.util.algorithm.support.ImprovedQuickSort; mbv\Gn#>  
import org.rut.util.algorithm.support.InsertSort; DbJ:KQ!*  
import org.rut.util.algorithm.support.MergeSort; S%uH*&`  
import org.rut.util.algorithm.support.QuickSort; _z\oDd`'  
import org.rut.util.algorithm.support.SelectionSort; 1i#uKKwE  
import org.rut.util.algorithm.support.ShellSort; 62rTGbDbx  
xksQMS2#  
/** AuUT 'E@E  
* @author treeroot g 'c4&Do  
* @since 2006-2-2 '|&}rLr:+  
* @version 1.0 tY !fO>Fn~  
*/ hLGUkG?6G  
public class SortUtil { >8Zz<S&z  
public final static int INSERT = 1; 7&XU]I  
public final static int BUBBLE = 2; +mhYr]Z  
public final static int SELECTION = 3; meu\jg  
public final static int SHELL = 4; J|_&3@r  
public final static int QUICK = 5; |vz< FR6  
public final static int IMPROVED_QUICK = 6; /XS6X  
public final static int MERGE = 7; QKc3Q5)@j  
public final static int IMPROVED_MERGE = 8; 9_ JK.  
public final static int HEAP = 9; !1+L0,I6  
[Ua4{3#  
public static void sort(int[] data) { GZ/.eYE  
sort(data, IMPROVED_QUICK); >WE3$Q>bi  
} fF[n?:VV  
private static String[] name={ _X;^'mqf~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" vi@a87w>  
}; (*7edc"F  
,,mkB6;  
private static Sort[] impl=new Sort[]{ SEXeK2v  
new InsertSort(), \.myLkm  
new BubbleSort(), )XMSQ ="m  
new SelectionSort(), <%hSBDG!x  
new ShellSort(), 9X,dV7 yW  
new QuickSort(), dm,7OQ  
new ImprovedQuickSort(), o4o&}  
new MergeSort(), jC ,foqL  
new ImprovedMergeSort(), c.m ' %4  
new HeapSort() {5 -4^|!  
}; 8wwqV{O7  
Un^QNd>  
public static String toString(int algorithm){ _ot4HmD  
return name[algorithm-1]; wblEx/FqE^  
} Ge@./SGT  
'?E^\\"*  
public static void sort(int[] data, int algorithm) { go m< V?$  
impl[algorithm-1].sort(data); *6e`km  
} E:4`x_~qQ  
B @HW@j  
public static interface Sort { Fj"g CBaR  
public void sort(int[] data); :g2?)Er-  
} 5xwztcR-  
@}!1Uk3ud  
public static void swap(int[] data, int i, int j) { SW UHHl  
int temp = data; T.d+@ZV<#  
data = data[j]; m;WUp{'  
data[j] = temp; ]G1{@r)  
} C16MzrB}(N  
} I7 pxi$8f  
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