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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。 CM%|pB/z  
插入排序: -}{%Q?rYj  
Em e'Gk  
package org.rut.util.algorithm.support; Sl3KpZ  
Gb(C#,xbK  
import org.rut.util.algorithm.SortUtil; nG"tO'J6  
/** @+'c+  
* @author treeroot k}-yOP{  
* @since 2006-2-2 1~}m.ER  
* @version 1.0 xS6(K  
*/ ]y3pE}R  
public class InsertSort implements SortUtil.Sort{ #TMm#?lC  
9=t#5J#O  
/* (non-Javadoc) , CJAzGBS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4. 1rJa  
*/ GWF/[%  
public void sort(int[] data) { qbS'|--wH  
int temp; &/Eg2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QS3U)ZO$@  
} ]43alf F#  
} g%`i=s&N%  
} d"#gO,H0  
Y,k(#=wg  
} -Y*VgoK%  
u~s Sk  
冒泡排序: .z=U= _e  
weNzYMf%  
package org.rut.util.algorithm.support; s %eyW _  
0B=[80K;8  
import org.rut.util.algorithm.SortUtil; aSc{Ft/O  
9YR]+*  
/** P DRnW  
* @author treeroot ePf+[pV3  
* @since 2006-2-2 Dc08D4   
* @version 1.0 &J8 Z@^  
*/ hf;S]8|F  
public class BubbleSort implements SortUtil.Sort{ V,V*30K5  
6}ce1|mkg/  
/* (non-Javadoc) }$o*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1hl]W+9  
*/ B\\6#  
public void sort(int[] data) { #EJhAJ  
int temp; B?+ .2  
for(int i=0;i for(int j=data.length-1;j>i;j--){ J.#(gFBBl\  
if(data[j] SortUtil.swap(data,j,j-1); ]b3/Es+  
} ac9qj  
} l^.K'Q1~a  
} $tI]rU  
} XC=%H'p  
Y[2Wt%2\6  
} &J_Z~^   
vu=me?m?(  
选择排序: _w 5RK(  
J , V  
package org.rut.util.algorithm.support; pgT9hle/  
t)` p@]j  
import org.rut.util.algorithm.SortUtil; m9Ax\lf  
?AEd(_a!q  
/** -;^;2#](g  
* @author treeroot nSS>\$  
* @since 2006-2-2 OB(pIzSe  
* @version 1.0 h;-a`@rO ;  
*/ ;x-(kIiE  
public class SelectionSort implements SortUtil.Sort { _5mc('  
f\fdg].!  
/* |'tW=  
* (non-Javadoc) moMYdArj  
* L'l F/qe^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "< v\M85&  
*/ ['z!{Ez  
public void sort(int[] data) { d{f@K71*  
int temp; -T7%dLHY  
for (int i = 0; i < data.length; i++) { [QT 1Ju64  
int lowIndex = i; Wt^|BjbB4  
for (int j = data.length - 1; j > i; j--) { -_NC%iN#C  
if (data[j] < data[lowIndex]) { 98fu>>*G{  
lowIndex = j; l[ne/O JJ  
} f/,tgA  
} h35Hu_c&  
SortUtil.swap(data,i,lowIndex); 1"}cdq.  
} 2jl)mL  
} bLqy!QE  
,vV ]"f  
} .x!T+`l>8I  
i(*I@ku  
Shell排序: *5e+@rD`  
} VEq:^o.  
package org.rut.util.algorithm.support; Zk&h:c  
w5*Z!  
import org.rut.util.algorithm.SortUtil; Jic}+X*0  
{^5?)/<  
/** G/vC~6x  
* @author treeroot K^zDNIQU  
* @since 2006-2-2 6"U8V ?E  
* @version 1.0 -I":Z2.fR  
*/ C9qJP^F  
public class ShellSort implements SortUtil.Sort{ 3NIUW!gr  
+R6a}d/K  
/* (non-Javadoc) Q6IQV0{p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3LDsxE=N:q  
*/ B6] <G-  
public void sort(int[] data) { H2;X   
for(int i=data.length/2;i>2;i/=2){ HSN8O@dy  
for(int j=0;j insertSort(data,j,i); Q$ri=uB;+  
} >`'O7.R  
} e}0:"R%E  
insertSort(data,0,1); p_{("zQ  
} O oSb>Y/4  
A5fwAB  
/** /qU>5;  
* @param data k%P;w1  
* @param j fQ 7vL~E  
* @param i w8iR|TV  
*/ @*MC/fe  
private void insertSort(int[] data, int start, int inc) { FB:<zmwR  
int temp; b.F^vv"]]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :?Y$bX}a  
} 5\Fz!  
} *1{S*`|cJy  
} &<5+!c V=  
AW,OH SXh6  
} K-eY|n  
"&~ 0T#  
快速排序: ~]'pY  
U7iuY~L  
package org.rut.util.algorithm.support; I]nHbghcW  
%O%=rUD  
import org.rut.util.algorithm.SortUtil; \}_Yd8  
ir16   
/** 93O;+Z5J  
* @author treeroot O7t(,uox3y  
* @since 2006-2-2 i)ASsYG!  
* @version 1.0 k+^'?D--'P  
*/ in-C/m#  
public class QuickSort implements SortUtil.Sort{ hWo=;#B*  
]3Dl)[R  
/* (non-Javadoc) LfLFu9#:w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;heHefbvvd  
*/ B[5r|d'  
public void sort(int[] data) { xJZ@DR,#  
quickSort(data,0,data.length-1); Y+~g\z-]c  
} x9W(cKB'S  
private void quickSort(int[] data,int i,int j){ %XTcP2pRJ  
int pivotIndex=(i+j)/2; CHJ> {b`O  
file://swap b;GD/UI  
SortUtil.swap(data,pivotIndex,j); xJs;v  
bEV<iZDq%  
int k=partition(data,i-1,j,data[j]); !yOeW0/2[  
SortUtil.swap(data,k,j); SC &~s$P;  
if((k-i)>1) quickSort(data,i,k-1); jJZgK$5+  
if((j-k)>1) quickSort(data,k+1,j); C'A]i5  
1 " #*)MF  
} *e#<n_%R  
/** B>y9fI  
* @param data jZoNi  
* @param i }/P5>F<H[  
* @param j B;K`q  
* @return IJIzXU  
*/ zTbVp8\pI  
private int partition(int[] data, int l, int r,int pivot) { C0*@0~8$9  
do{ 6t'l(E +  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); f~{}zGTM:  
SortUtil.swap(data,l,r); cbYLU\!  
} 9#d+RT  
while(l SortUtil.swap(data,l,r); VOTv?Vf  
return l; 7OCwG~_^  
} ;Xvp6.:  
Mwp$  
} 4*.K'(S5fx  
3jH\yXj  
改进后的快速排序: k n[Y   
;a{:%t  
package org.rut.util.algorithm.support;  Ez~'^s@  
\dQx+f&t  
import org.rut.util.algorithm.SortUtil; RP5+d  
gk[{2HgN  
/** J[~5U~F  
* @author treeroot <"D=6jqZ  
* @since 2006-2-2 P^`duZ{T  
* @version 1.0 -u!FOD/  
*/ `1OgYs  
public class ImprovedQuickSort implements SortUtil.Sort { >>i@r@  
A5'NGt  
private static int MAX_STACK_SIZE=4096; k67a'pmyJ  
private static int THRESHOLD=10; P + "Y  
/* (non-Javadoc) jw}}^3.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l1U=f]  
*/ JO<wK  
public void sort(int[] data) { "P-lSF?T  
int[] stack=new int[MAX_STACK_SIZE]; 7pA /   
W|:lVAP.|}  
int top=-1; %ek'~  
int pivot; ~9)"!   
int pivotIndex,l,r; fb~=Y$|  
p[lNy{u~M  
stack[++top]=0; $;M:TpX  
stack[++top]=data.length-1; dz [!-M  
r0d35  
while(top>0){ ~_IHaw$hg  
int j=stack[top--]; <<](XgR(  
int i=stack[top--]; /2EHv.e `  
1i:|3PA~  
pivotIndex=(i+j)/2; %CUGm$nH  
pivot=data[pivotIndex]; Uy ?  
;w|b0V6  
SortUtil.swap(data,pivotIndex,j); ]lw|pvtd  
AcI,N~~  
file://partition VvFC -r,=G  
l=i-1; l\M_-:I+4  
r=j;  z@|GC_L  
do{ ;,i]w"*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Uw,2}yR  
SortUtil.swap(data,l,r); ~8"8w(CG*I  
} ay "'#[  
while(l SortUtil.swap(data,l,r); ZCKka0*  
SortUtil.swap(data,l,j); bl_H4  
y2]-&]&  
if((l-i)>THRESHOLD){ ydw)mT44K  
stack[++top]=i; X U/QA [K  
stack[++top]=l-1; M?b6'd9f  
} kn)t'_jC  
if((j-l)>THRESHOLD){ [V'QrcCF  
stack[++top]=l+1; :=%0Mb:  
stack[++top]=j; o?1;<gs  
} Xc"&0v%;#  
[aI]y =v  
} lrf v+  
file://new InsertSort().sort(data); X#3et'  
insertSort(data); uVzFsgBp  
} >5s6u`\  
/** OpM(j&  
* @param data OGl$W>w1  
*/ ebPgYxVZR  
private void insertSort(int[] data) { iyj+:t/  
int temp; ?4H i-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); it]E-^2>  
} p!k7C&]E  
} b'6- dU%  
} 5_XV%-wM  
xss`Y,5?  
} !mWiYpbU+  
x.8TRMk^  
归并排序: CPg+f1K  
f2,jh}4  
package org.rut.util.algorithm.support; >pU:Gr  
*@d&5  
import org.rut.util.algorithm.SortUtil; EkGQ(fZ1|  
F(na{<g};  
/** h?bb/T+'  
* @author treeroot p-1 3H0Kt  
* @since 2006-2-2 /mp*>sNr6  
* @version 1.0 5M9 I,  
*/ oB74y  
public class MergeSort implements SortUtil.Sort{ DjSbyXvrg  
'v]u#/7a  
/* (non-Javadoc) lA>DS#_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Us+pc^A  
*/ J'N!Omz  
public void sort(int[] data) { sdQkT#%y  
int[] temp=new int[data.length]; ]4;PR("aU  
mergeSort(data,temp,0,data.length-1); }$bF 5&  
} <dW]\h?)  
%W@v2  
private void mergeSort(int[] data,int[] temp,int l,int r){ }Tf9S<xpq3  
int mid=(l+r)/2; p~*UpU8u  
if(l==r) return ; 71vkyn@"  
mergeSort(data,temp,l,mid); -V:"l  
mergeSort(data,temp,mid+1,r); t3dlS`O  
for(int i=l;i<=r;i++){ TLoz)&@  
temp=data; kOh{l: 2-+  
} 5|jw^s7  
int i1=l; #v<QbA  
int i2=mid+1; a{{g<< H  
for(int cur=l;cur<=r;cur++){ keB&Bjd&  
if(i1==mid+1) UQB "v3Z  
data[cur]=temp[i2++]; a33TPoj  
else if(i2>r) Duc#$YfGm  
data[cur]=temp[i1++]; pZtu&R%GU  
else if(temp[i1] data[cur]=temp[i1++]; dnj}AVfQx  
else vDH>H^9Y  
data[cur]=temp[i2++]; ?B :a|0pf  
} 'Ysx=  
} R'S0 zp6  
hAHq\  
} 9 7ql5  
Z!U)I-x&  
改进后的归并排序: M`ip~7"  
Yv:55+e!|  
package org.rut.util.algorithm.support; y#XbJuN/  
}#X8@  
import org.rut.util.algorithm.SortUtil; It{;SKeo  
[,TkFbDq"J  
/** qL,tYJ<m%  
* @author treeroot wC5ee:u C%  
* @since 2006-2-2 1UKg=A-q  
* @version 1.0 C`5  
*/ OK\A</8r  
public class ImprovedMergeSort implements SortUtil.Sort { w: >5=mfk  
Y-7^o@y  
private static final int THRESHOLD = 10; =b/L?dR.-  
-&<Whhs.@  
/* A<W 6=5h  
* (non-Javadoc) ?2>FdtH  
* y.[Mnj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Y]mOD^ p  
*/ kYLM&&h  
public void sort(int[] data) { 8>7& E-  
int[] temp=new int[data.length]; "_`F\DGAZu  
mergeSort(data,temp,0,data.length-1); $^@)  
} y~75r\"R  
QcgfBsv96  
private void mergeSort(int[] data, int[] temp, int l, int r) {  |jM4E$  
int i, j, k; Dgy]ae(Hb3  
int mid = (l + r) / 2; [ :zO}r:  
if (l == r) )KP5Wud X  
return; F{UP;"8'  
if ((mid - l) >= THRESHOLD) e @IA20  
mergeSort(data, temp, l, mid); d 9q(xZ5  
else :H c0b=  
insertSort(data, l, mid - l + 1); 5|1 T}Z#;  
if ((r - mid) > THRESHOLD) /tUy3myJ  
mergeSort(data, temp, mid + 1, r); i\dc>C ;  
else 3\Xbmq8}  
insertSort(data, mid + 1, r - mid); 0Q^Ikiv   
CxfRV L`7  
for (i = l; i <= mid; i++) { hXA6D)   
temp = data; Aj0Tfdxy  
} sVl-N&/  
for (j = 1; j <= r - mid; j++) { VZ\B<i  
temp[r - j + 1] = data[j + mid]; A,`8#-AX  
} VqS#waNrx  
int a = temp[l]; kcQ'$<Mz<  
int b = temp[r]; FXs*vg`  
for (i = l, j = r, k = l; k <= r; k++) { 4n4?4BEn  
if (a < b) { hiUD]5Kp  
data[k] = temp[i++]; 0@EwM  
a = temp; D_x +:1(  
} else { 4T=u`3pD7l  
data[k] = temp[j--]; kV3 8`s>+  
b = temp[j]; N2w"R{)j\  
} 3"P }n  
} 5sb\r,kW  
} eQ&ZX3*}  
. Z%{'CC  
/** 8KRba4[  
* @param data f/V 2f].  
* @param l 7P9=)$(EH  
* @param i 1Uqu> '  
*/ ,dx3zBI  
private void insertSort(int[] data, int start, int len) { $_x^lr  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !=N"vD*  
} fXcm|U,ho  
} Lliq j1&  
} N"3b{Qi o  
} $ >EYhLBa  
phgm0D7  
堆排序: a AB`G3  
=Jym%m  
package org.rut.util.algorithm.support; q#8 [  
0q'w8]m  
import org.rut.util.algorithm.SortUtil; L>YU,I\o  
PpgP&;z4  
/** lhkwWbB  
* @author treeroot [B|MlrZ  
* @since 2006-2-2 9[^gAR  
* @version 1.0 d,=r 9.  
*/ q5#J~n8Wr  
public class HeapSort implements SortUtil.Sort{ B:+6~&,-  
c.j$9=XLBG  
/* (non-Javadoc) ,JEF GI{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D)d~3`=#  
*/ >>5NX"{  
public void sort(int[] data) { ;W^o@*i{>  
MaxHeap h=new MaxHeap(); #cCL.p"]  
h.init(data); Q_Gi]M9  
for(int i=0;i h.remove(); /IM#.v  
System.arraycopy(h.queue,1,data,0,data.length); |P%DkM*X  
} #/Eb*2C`b  
W]5USFan  
private static class MaxHeap{ TqddOp  
y8rm  
void init(int[] data){ /<]{KI  
this.queue=new int[data.length+1]; ?G -e](]^<  
for(int i=0;i queue[++size]=data; _C`K*u 6Z<  
fixUp(size); sUU{fNC6|  
} x(eb5YS  
} 1SR+m>pL  
r}jGUe}d  
private int size=0; k0Uyf~p~  
!H}vu]R  
private int[] queue; t>[KVVg W  
(4Zts0O\  
public int get() { /\W Qx e  
return queue[1]; <0PT"ij  
} ,.qMEMm  
F  3'9u#  
public void remove() { H `(exa:w  
SortUtil.swap(queue,1,size--);  $O dCL  
fixDown(1); T"0,r $3:  
} L_K=g_]  
file://fixdown $.[#0lCI  
private void fixDown(int k) { pe{; ~-|6  
int j; y})70w@ +_  
while ((j = k << 1) <= size) { g=$1cC+(  
if (j < size %26amp;%26amp; queue[j] j++; ''Cay0h  
if (queue[k]>queue[j]) file://不用交换  ,qYJioWX  
break; eR3$i)5  
SortUtil.swap(queue,j,k); ?|ZTaX6A  
k = j; ti<;7Yb  
} f0BdXsV#g  
} ^J\~XYg{7  
private void fixUp(int k) { `8Lo{P  
while (k > 1) { Z%n(O(^L  
int j = k >> 1; ZE/o?4k*c1  
if (queue[j]>queue[k]) )u qA(R>  
break; F<(i.o(  
SortUtil.swap(queue,j,k); Z%x\~ )~  
k = j; ]hbyELs  
} -%I2[)F<  
} B0ndcB-  
QQV~?iW{~  
} al[n, u  
X 51Yfr  
} iT)z_  
T0]*{k(FR  
SortUtil: xSBc-u#< G  
eVM/uDD  
package org.rut.util.algorithm; dF~8XYo  
>~Qr  
import org.rut.util.algorithm.support.BubbleSort; /mK?E5H'r1  
import org.rut.util.algorithm.support.HeapSort; _Y[jyD1>  
import org.rut.util.algorithm.support.ImprovedMergeSort; 56Vb+0J'  
import org.rut.util.algorithm.support.ImprovedQuickSort; G2^et$<{uU  
import org.rut.util.algorithm.support.InsertSort; 4NdN< #Lr  
import org.rut.util.algorithm.support.MergeSort; jr3ti>,xV  
import org.rut.util.algorithm.support.QuickSort; w/IZDMBf|  
import org.rut.util.algorithm.support.SelectionSort; Vo"RO$%ow*  
import org.rut.util.algorithm.support.ShellSort; +|ycvHd  
_BDK`D  
/** +tD[9b! m  
* @author treeroot hsw9(D>jp  
* @since 2006-2-2 e A}%C.ZR  
* @version 1.0 O1`9Y}G(r  
*/ d`/tE?Gw  
public class SortUtil { G7CG~:3h+  
public final static int INSERT = 1; zH*KYB  
public final static int BUBBLE = 2; %zO h  
public final static int SELECTION = 3; d%0~c'D8a  
public final static int SHELL = 4; Ogp"u b8  
public final static int QUICK = 5; \~5C7^_  
public final static int IMPROVED_QUICK = 6; S*sT] J`!  
public final static int MERGE = 7; !Lh^oPT"I  
public final static int IMPROVED_MERGE = 8; DzheoA-+L'  
public final static int HEAP = 9; %DQhM,c@  
Q8_ d)t|  
public static void sort(int[] data) { cDI [PJ9  
sort(data, IMPROVED_QUICK); &wB\ ~Ie-  
} :(H>2xS,s  
private static String[] name={ Zx d~c]n  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z?O *'#yn  
}; {b@KYR9K  
Glpe/At  
private static Sort[] impl=new Sort[]{ D3x/OyG(  
new InsertSort(), q@jq0D)g  
new BubbleSort(), k`x=D5s\  
new SelectionSort(), Y OJ6 w  
new ShellSort(), |qoKO:B4-[  
new QuickSort(), /P 2[:[w  
new ImprovedQuickSort(), )<xypDQ  
new MergeSort(), &< !Ufa&  
new ImprovedMergeSort(), 2r 6'O6v  
new HeapSort() A'%1ZQ33O  
}; hbc uK&  
_fwb!T}$  
public static String toString(int algorithm){ h/,${,}J  
return name[algorithm-1]; JO@|*/mL  
} LE%7DW(  
_H^^y$+1  
public static void sort(int[] data, int algorithm) { W'on$mB5<  
impl[algorithm-1].sort(data); -D^}S"'  
} Kb^>-[Yx  
>[1W:KQA  
public static interface Sort { 2>l,no39t+  
public void sort(int[] data); ZoB {x*IH  
} \t|M-%&)4  
NzW`B^p  
public static void swap(int[] data, int i, int j) { NxLXm,  
int temp = data; /CIh2 ]#e  
data = data[j]; XhPe]P  
data[j] = temp; g%k`  
} P(a.iu5   
} w\19[U3  
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