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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。 D1xGUz2r  
插入排序: rl%,9JD!  
H"l4b4)N\  
package org.rut.util.algorithm.support;  rvd $4l^  
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import org.rut.util.algorithm.SortUtil; %/ y=_G  
/** #mu L-V  
* @author treeroot (~^fx\-S  
* @since 2006-2-2 ,<tJ` ,0X  
* @version 1.0 f(m, !  
*/ k(dakFaC^  
public class InsertSort implements SortUtil.Sort{ 6K pq~o   
i)z|= |?  
/* (non-Javadoc) Uv *A a7M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nFEJO&1+  
*/ Z*co\ pW  
public void sort(int[] data) { xeU|5-d'  
int temp; ,O5X80'.g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yKV{V?h?  
}  '/.Dxib  
} V+ ("kz*  
} ^_bG{du  
`sCaGCp  
} ,-y9P  
XJ4f;U  
冒泡排序: NVv <vu  
YK3>M"58  
package org.rut.util.algorithm.support; 29RP$$gR  
DQXUh#t\(]  
import org.rut.util.algorithm.SortUtil; ?8V.iHJk  
eTx9fx w  
/** ux&"TkEp  
* @author treeroot W%g*sc*+  
* @since 2006-2-2 TBBnsj6e  
* @version 1.0 ljNwt  
*/ ! dzgi:  
public class BubbleSort implements SortUtil.Sort{ c}o 6Rm50  
"17)`Yf  
/* (non-Javadoc) f)/Z7*Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Iy9hBAg\y  
*/ |q77  
public void sort(int[] data) { +H2Jhgi  
int temp; Y7}>yC/GY  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :G1ddb&0+  
if(data[j] SortUtil.swap(data,j,j-1); ?J\&yJ_B  
} :]-oo*xP  
} sW]^YT>?  
} -XV,r<''  
} +'?Qph6o,7  
| ;tH?E  
} /sKL|]i=  
l/X_CM8y~  
选择排序: l'+3 6  
S:_Ms{S  
package org.rut.util.algorithm.support; YO7U}6wBt  
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import org.rut.util.algorithm.SortUtil; QO'Hyf t  
:X;G]B .  
/** Kq")\Ha,f  
* @author treeroot !wy _3a  
* @since 2006-2-2 i<Vc~ !pT  
* @version 1.0 m@2E ~m  
*/ \cIN]=#  
public class SelectionSort implements SortUtil.Sort { b&z#ZY  
lYx_8x2  
/* Zo3!Hs ZA  
* (non-Javadoc) ;l@94)@0  
* bBjr hi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A>@#eyB  
*/ @YI{E*?S  
public void sort(int[] data) { 9jkz83/+<  
int temp; %v0M~J}+  
for (int i = 0; i < data.length; i++) { QJ2]8K)+C  
int lowIndex = i; i 9) G t  
for (int j = data.length - 1; j > i; j--) { 3B&A)&pEO  
if (data[j] < data[lowIndex]) { Xul`>8y|  
lowIndex = j; x%B_v^^^  
} v"bWVc~H  
} T`bYidA  
SortUtil.swap(data,i,lowIndex); ,"%C.9a  
} Z,).)y#B  
} /s\ m V  
}T?X6LA$I8  
} 4era5=  
) O0Cz n  
Shell排序: YJJ1N/Z1  
AjVC{\Ik  
package org.rut.util.algorithm.support; m!V,W*RNr  
k"N>pjgd$  
import org.rut.util.algorithm.SortUtil; yE$PLM  
R}&?9tVRR  
/** :;k?/KU7  
* @author treeroot PF{uaKWk  
* @since 2006-2-2 H5K Fm#  
* @version 1.0 7d:]o>  
*/ /G||_Hc  
public class ShellSort implements SortUtil.Sort{ > G\0Z[<v,  
gQ+]N*.  
/* (non-Javadoc) \`n(JV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l;; 2\mL?  
*/ Y6jyU1>  
public void sort(int[] data) { 6j%%CWU{~  
for(int i=data.length/2;i>2;i/=2){ %rW}x[M%w?  
for(int j=0;j insertSort(data,j,i); my 'nDi  
} "<CM 'R  
} }. &nEi`  
insertSort(data,0,1); clE9I<1v  
} VeA@HC`?"  
^)AECn  
/** ='7m$,{(Q[  
* @param data -$d?e%}#  
* @param j O<m46mwM  
* @param i @kYY1mv;  
*/ _jQ:9,; A  
private void insertSort(int[] data, int start, int inc) { iM]O  
int temp; q7B5#kb  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /JD}b[J$  
} Wg-mJu(  
} r&u1-%%9[  
} F @PPhzZ  
PucNu8   
} QK-aH1r  
W5|{A])N  
快速排序: a"#t'\  
;d?BVe?  
package org.rut.util.algorithm.support; ?%O>]s  
km %r{  
import org.rut.util.algorithm.SortUtil; >F$9&s&  
QQJGqM3a2  
/** T\6Qr$t  
* @author treeroot X`8<;l  
* @since 2006-2-2 A(y6]E!  
* @version 1.0 1-kuK<KR  
*/ V3,C5KKk&z  
public class QuickSort implements SortUtil.Sort{ 9jal D X  
`G\ qGllX  
/* (non-Javadoc) e{)giJY9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z|g2Q#$-\S  
*/ 49qa  
public void sort(int[] data) { e@'x7Zzh  
quickSort(data,0,data.length-1); 8F sQLeOE  
} lu#a.41  
private void quickSort(int[] data,int i,int j){ }z]d]  
int pivotIndex=(i+j)/2; UF9={fN1  
file://swap M\1CDU+*Ns  
SortUtil.swap(data,pivotIndex,j); g\aO::  
HhbBt'fH  
int k=partition(data,i-1,j,data[j]); $(1t~u<17  
SortUtil.swap(data,k,j); {v"f){   
if((k-i)>1) quickSort(data,i,k-1); mR0`wrt  
if((j-k)>1) quickSort(data,k+1,j); (j8*F Bq  
@-q,%)?0}=  
} z teu{0  
/** ]3,'U(!+  
* @param data d6i}xnmC  
* @param i ?eJ'$  
* @param j *bK=<{d1P  
* @return Y>$5j}K  
*/ e~vO   
private int partition(int[] data, int l, int r,int pivot) { +)c<s3OCE  
do{ q;K]NP-_p  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @&*TGU  
SortUtil.swap(data,l,r); %Wtf24'o;v  
} =ejcP&-V/  
while(l SortUtil.swap(data,l,r); F8%^Ed~@  
return l; xF_u:}7`  
} IOHWb&N6  
XpAJP++  
} z_c-1iXCW  
\`k=9{R.  
改进后的快速排序: qnP4wRpr  
MWwqon|  
package org.rut.util.algorithm.support; X}#vt?mu  
G4 7^xR  
import org.rut.util.algorithm.SortUtil; w,1N ;R&  
tB;PGk_6  
/** ^gVQ6=z%  
* @author treeroot XfcYcN  
* @since 2006-2-2 AbNr]w&pXC  
* @version 1.0 _a&gbSQv  
*/ &v:zS$m>  
public class ImprovedQuickSort implements SortUtil.Sort { ! fk W;|  
<Sot{_"li  
private static int MAX_STACK_SIZE=4096; )CXlPbhY?  
private static int THRESHOLD=10; =eA|gt  
/* (non-Javadoc) A rE~6X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EW$drY@  
*/ Uz;^R@  
public void sort(int[] data) { Q<>u) %92@  
int[] stack=new int[MAX_STACK_SIZE]; TG=A]--_a  
/  Xnq0hN  
int top=-1; l>*X+TpA,  
int pivot; L|[i<s;  
int pivotIndex,l,r; Od.@G~  
O72g'qFPE  
stack[++top]=0; +v/y{8Fu  
stack[++top]=data.length-1; DN^+"_:TB  
=p|IWn{P  
while(top>0){ AMrYT+1  
int j=stack[top--]; PTHxvml  
int i=stack[top--]; cc${[yj)  
s}JifY`  
pivotIndex=(i+j)/2; 'v'[_(pq  
pivot=data[pivotIndex]; 6$"IeBRO  
u?>},M/  
SortUtil.swap(data,pivotIndex,j); s:{[Y7\?  
xWLZlUHEu  
file://partition  W2` 3 p  
l=i-1; B1X&O d  
r=j; ]MCH]/  
do{ U<Oc&S{]*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Vg62HZ |  
SortUtil.swap(data,l,r); zd_N' :6  
} Ry[7PLn]  
while(l SortUtil.swap(data,l,r); #>yOp *  
SortUtil.swap(data,l,j); EG4~[5[YgI  
`n,RC2yo  
if((l-i)>THRESHOLD){ h.-L_!1B7  
stack[++top]=i; &._"rhz  
stack[++top]=l-1; Ee5YW/9]  
} / 0$ !.  
if((j-l)>THRESHOLD){ '&Ur(axs  
stack[++top]=l+1; (bm> )U=  
stack[++top]=j; `U0XvWPr[  
} /'oo;e  
9ad`q+kY  
} xkf2;  
file://new InsertSort().sort(data); N-N]BS6  
insertSort(data); p#c41_?'e  
} YUSrZ9Yg  
/** <=CABWO.  
* @param data jR\pYRK  
*/ ,'C*?mms  
private void insertSort(int[] data) { [vI ;A !  
int temp; 7 @\i5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p` ~=v4;b  
} "3_X$`v"!  
} t=lDN'\P  
} NvzPZ9=@-  
&fRz6Hd  
}  U :x;4  
NxJnU<g-  
归并排序: 2KO`+  
wv3*o10_w8  
package org.rut.util.algorithm.support; &y0GdzfQd  
^vm6JWwN0B  
import org.rut.util.algorithm.SortUtil; ['>ZC3?"h  
!0p K8k&MG  
/** Bor_(eL^  
* @author treeroot RaLV@>jPm  
* @since 2006-2-2 Z<<=2Xl(  
* @version 1.0 V+D<626o  
*/ it{Jd\/hR  
public class MergeSort implements SortUtil.Sort{ q4X( _t  
BN&)5M?Xt6  
/* (non-Javadoc) Lapeh>1T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -[N9"Z,  
*/ 7.2G}O6$  
public void sort(int[] data) { RKzO$T  
int[] temp=new int[data.length]; |t"CH'KJZ  
mergeSort(data,temp,0,data.length-1); :tbI=NDb  
} }72\Aw5  
I[rR-4.F]  
private void mergeSort(int[] data,int[] temp,int l,int r){ '<,Dz=  
int mid=(l+r)/2; X<_HQ  
if(l==r) return ; , XscO7  
mergeSort(data,temp,l,mid); N, u]2,E  
mergeSort(data,temp,mid+1,r); FD!8o  
for(int i=l;i<=r;i++){ 6yYjZ<  
temp=data; %qsl<_&  
} ?!m\|'s-  
int i1=l; nGX3_-U4  
int i2=mid+1; S~r75] "  
for(int cur=l;cur<=r;cur++){ ].Bx"L!B  
if(i1==mid+1) Xm<_!=  
data[cur]=temp[i2++]; D]>Z5nr |  
else if(i2>r) y k!K 5  
data[cur]=temp[i1++]; f4,|D |  
else if(temp[i1] data[cur]=temp[i1++]; Q(A$ >A  
else J e|   
data[cur]=temp[i2++]; 3ouy-SQ  
} k)z>9z%D  
} >+<b_q|P  
%yc-D]P/  
} aZo}Ix:/  
%Unwh1VG  
改进后的归并排序: |3FGMg%  
4n.JRR&;  
package org.rut.util.algorithm.support; PN99 R]K0g  
P3!@}!r8  
import org.rut.util.algorithm.SortUtil; "N'W~XPG  
Q "NZE  
/** f.j<VKF}  
* @author treeroot 3S#p4{3   
* @since 2006-2-2 A|K=>7n]U  
* @version 1.0 h$sOJs~6h  
*/ !\VEUF,K?  
public class ImprovedMergeSort implements SortUtil.Sort { s% rmfIp"  
5"G-r._  
private static final int THRESHOLD = 10; Nk7=[y#z  
gT+wn-3  
/* 0datzEns`  
* (non-Javadoc) "{+2Q  
* y(iq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) THy?Y  
*/ t@R n#(~"  
public void sort(int[] data) { O..{wdZy  
int[] temp=new int[data.length]; 5|jY  
mergeSort(data,temp,0,data.length-1); a0k;way  
} ]iW:YNvXA  
_R]0S  
private void mergeSort(int[] data, int[] temp, int l, int r) { }M(xN6E  
int i, j, k; y:Gn58\o  
int mid = (l + r) / 2; ?Hdu=+ZV  
if (l == r) bxwwYSS  
return; z}==6| {  
if ((mid - l) >= THRESHOLD) aso8,mpZuA  
mergeSort(data, temp, l, mid); 6DU(KYN  
else %=*|: v  
insertSort(data, l, mid - l + 1); ?vbAaRg50s  
if ((r - mid) > THRESHOLD) )w<Z4_!N4s  
mergeSort(data, temp, mid + 1, r); 9 iJ$M!  
else Nw9:Gi  
insertSort(data, mid + 1, r - mid); UpD4'!<buV  
%t6-wWM97  
for (i = l; i <= mid; i++) { >}+R+''nR  
temp = data; :81d~f7  
} {A< 961  
for (j = 1; j <= r - mid; j++) { ckV\f({  
temp[r - j + 1] = data[j + mid]; KkTE -$-  
} w\D !e  
int a = temp[l]; vw:GNpg'R6  
int b = temp[r]; boDD?0.|  
for (i = l, j = r, k = l; k <= r; k++) { \}4*}Lr  
if (a < b) { \`z%5/@f;  
data[k] = temp[i++]; 9MO=f^f-  
a = temp; S,5>/'fy0  
} else { .9Cy<z  
data[k] = temp[j--]; WK?5`|1l:x  
b = temp[j]; 3O-vO=D  
} nql9SQ'\\  
} oR~d<^z(  
} nhMxw @Z\  
xDl; tFI  
/** &uc`w{,Zs  
* @param data N.q*jY= X|  
* @param l k18v{)i~  
* @param i JF~9efWe>  
*/ p/nATvh$  
private void insertSort(int[] data, int start, int len) { o o'7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |/xx**?  
} ZI1]B944ni  
} e-v|  
} }wp/,\_ >  
} }ssja,;  
&b^~0Z  
堆排序: l"+8>Mm  
_()1 "5{  
package org.rut.util.algorithm.support; g-UCvY I  
hQY`7m>L  
import org.rut.util.algorithm.SortUtil; `V<jt5TS  
 7 FY2a  
/** K^@9\cl^  
* @author treeroot @.i#uMWF`  
* @since 2006-2-2 OE0G*`m  
* @version 1.0 g"|>^90  
*/ FP=27=  
public class HeapSort implements SortUtil.Sort{ U/kQwrM  
zdU 46|!u  
/* (non-Javadoc) AIn/v`JeX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EZjtZMnj  
*/ h/{1(c}  
public void sort(int[] data) { w< Xwz`O  
MaxHeap h=new MaxHeap(); JttDRNZAU  
h.init(data); ZQfPDH=  
for(int i=0;i h.remove(); y9d"sqyh  
System.arraycopy(h.queue,1,data,0,data.length); `#l3a  
} (57!{[J  
o<3$|`S&  
private static class MaxHeap{ .1;UEb|T  
;>5`Y8s6  
void init(int[] data){ MIr+4L  
this.queue=new int[data.length+1]; M.s'~S7y  
for(int i=0;i queue[++size]=data; 1d FuoX  
fixUp(size); 8 I_  
} ,G}i:7  
} [(3s5)O  
*@PM,tS;  
private int size=0; {]}94T~/k  
7mdd}L^h Z  
private int[] queue; K.mxF,H  
:EQ{7Op`  
public int get() { MaHP):~  
return queue[1]; 7pY :.iVO  
} hPNMp@Nm6  
6uo;4}0  
public void remove() { n}A!aC  
SortUtil.swap(queue,1,size--); yCN_vrH>  
fixDown(1); :zKMw=  
} 4L8hn4F  
file://fixdown R^/SBrWve  
private void fixDown(int k) { /<8y>  
int j; X)~wB7_0G  
while ((j = k << 1) <= size) { 4RtAwB  
if (j < size %26amp;%26amp; queue[j] j++; 7LrmI~P  
if (queue[k]>queue[j]) file://不用交换 b\`S[  
break; `a MU2  
SortUtil.swap(queue,j,k); lcm [l  
k = j; Z#H<+S(  
}  =s4(Y  
} Lm2!<<<  
private void fixUp(int k) { A|+QUPD  
while (k > 1) { /IRXk[  
int j = k >> 1; n:`f.jG |  
if (queue[j]>queue[k]) [ C0v -  
break; 7LVG0A2>7  
SortUtil.swap(queue,j,k); <OGG(dI  
k = j; If,p!L  
} 0Z6geBMc  
} I@9'd$YY  
Is7BJ f  
} R'tKJ_VI  
r niM[7K  
} [DM0'4  
%k1Pyv;]  
SortUtil: u>"0 >U  
K$M+"#./  
package org.rut.util.algorithm; [TFJb+N&  
X^ Is-[OvE  
import org.rut.util.algorithm.support.BubbleSort; ,.W7Z~z  
import org.rut.util.algorithm.support.HeapSort; .M^[/!  
import org.rut.util.algorithm.support.ImprovedMergeSort; tWIJ,_8l  
import org.rut.util.algorithm.support.ImprovedQuickSort; =zyA~}M2  
import org.rut.util.algorithm.support.InsertSort; BtC*]WB"_'  
import org.rut.util.algorithm.support.MergeSort; 'q)g, 2B%  
import org.rut.util.algorithm.support.QuickSort; G7nhUg  
import org.rut.util.algorithm.support.SelectionSort; [ncK+rGAc  
import org.rut.util.algorithm.support.ShellSort; qy3@> 1G  
rtj`FH??11  
/** be,Rj,-  
* @author treeroot 3J+2#ML  
* @since 2006-2-2  @;bBc  
* @version 1.0 ]oB~8d  
*/ ]h,rgO ;  
public class SortUtil {  L\PmT  
public final static int INSERT = 1; clB K  
public final static int BUBBLE = 2; ccHf+=  
public final static int SELECTION = 3; zOs}v{8"  
public final static int SHELL = 4; PVo7Sy!'H  
public final static int QUICK = 5; 9aJIq{`E  
public final static int IMPROVED_QUICK = 6; VIT|#  
public final static int MERGE = 7; LWF,w7v[L  
public final static int IMPROVED_MERGE = 8; r\;fyeH  
public final static int HEAP = 9; :D)(3U5  
xmvE*q"9]  
public static void sort(int[] data) { LTTMa-]Yy  
sort(data, IMPROVED_QUICK); fgdR:@]-  
} wu)+n\mt'  
private static String[] name={ EsMX #1>/m  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  -BSdrP|  
}; Oo|PZ_P  
Ur(R[*2bx  
private static Sort[] impl=new Sort[]{ r0XEB,}  
new InsertSort(), 2jFuF71  
new BubbleSort(), u S1O-Q>  
new SelectionSort(), }xk(aM_  
new ShellSort(), 3#>W\_FY*D  
new QuickSort(),  oBkhb  
new ImprovedQuickSort(), sE pI)9  
new MergeSort(), !ajBZ>Q  
new ImprovedMergeSort(), `5IrV&a  
new HeapSort() i41~-?Bc  
}; OM*c7&  
4 O!2nP  
public static String toString(int algorithm){ Tnp P'  
return name[algorithm-1]; G](4!G&  
} hO=L|BJ?I  
.5(YL8d  
public static void sort(int[] data, int algorithm) {  K& #il  
impl[algorithm-1].sort(data); zw>L0gC  
} )XN_|zCk  
4E39]vb  
public static interface Sort { ]4l2jY  
public void sort(int[] data); UTD_rQ  
} hIJtu;}zU  
}5;4'l8  
public static void swap(int[] data, int i, int j) { >rCD5#DG  
int temp = data; {o}U"b<+Ra  
data = data[j]; ).SJ*Re*^I  
data[j] = temp; k QuEG5n.-  
} R~\R>\  
} =yf) Z^  
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