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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。 fBj)HoHQW  
插入排序: 5af0- hj  
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package org.rut.util.algorithm.support; XUA@f*  
-1RMyVx  
import org.rut.util.algorithm.SortUtil; zh*D2/ r  
/** FK593z  
* @author treeroot 5a$EXV  
* @since 2006-2-2 [`t ;or  
* @version 1.0 C5Q!_x(  
*/ U/^#nU.,  
public class InsertSort implements SortUtil.Sort{ 6]Is"3ca  
^n(FO,8c  
/* (non-Javadoc) e-`.Ht  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #$x,PeG  
*/ S`U8\KTi  
public void sort(int[] data) { 0B7G:X0  
int temp;  d]`6N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L_RVHvA=M/  
} jr?/wtw  
} ]LUcOR  
} tVEe)QX  
ws+'*7  
} ^`'\eEa  
 o+'|j#P  
冒泡排序: 5P%#5Yr2  
gS5MoW1  
package org.rut.util.algorithm.support; _ERtL5^  
G<n75!  
import org.rut.util.algorithm.SortUtil; M|mfkIk0MB  
O573AA  
/** zMFTkDY  
* @author treeroot KF_fz   
* @since 2006-2-2 n@RmH>"  
* @version 1.0 9hfg/3t('  
*/ suwR`2  
public class BubbleSort implements SortUtil.Sort{ W Su6chz)  
kpIn_Ea  
/* (non-Javadoc) ]690ey$E:j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ( .cA'f?h  
*/ HS/.H,X  
public void sort(int[] data) { .Y;f 9R  
int temp; TA-2{=8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :LY.C<8  
if(data[j] SortUtil.swap(data,j,j-1); JM|HnyI  
} "u!gfG?oH  
} 2c 0;P #ol  
} 5MaN {*)l  
} 6/mz., g2  
-je} PwT  
} L AasmQ  
b;UBvwY_  
选择排序: tfGs| x  
$G9LaD#;M  
package org.rut.util.algorithm.support; AAlc %d/9  
|p&EP2?T  
import org.rut.util.algorithm.SortUtil; LJ/He[r|[  
S3ooG14Ls  
/** N7_eLhPt*8  
* @author treeroot ]EX6Y  
* @since 2006-2-2 >] 'oN  
* @version 1.0 {x_.QWe5  
*/ Y:ly x-lj  
public class SelectionSort implements SortUtil.Sort { e=OHO,74z"  
Hyy b0c^=  
/* QIGUi,R  
* (non-Javadoc) I.jqC2G  
* OR+qi*)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uI7n{4W*x  
*/ |NZi2Bu  
public void sort(int[] data) { v"o"W[  
int temp; Wn(!6yid  
for (int i = 0; i < data.length; i++) { U]sAYp^$  
int lowIndex = i; sX%n`L  
for (int j = data.length - 1; j > i; j--) { ~{/M_ =  
if (data[j] < data[lowIndex]) { Bdw33z*m  
lowIndex = j; PlzM`g$A  
} 3 y}E*QE  
} d^aVP  
SortUtil.swap(data,i,lowIndex); #y:D{%Wp  
} g8##Be  
} ca_mift  
"CJ~BJI%  
} gM3:J:N  
pXSShU#  
Shell排序: "=Br&FN{|  
1P!)4W  
package org.rut.util.algorithm.support; kL*P 3 0  
#u hUZq  
import org.rut.util.algorithm.SortUtil; ?7aZU  
DO*U7V02  
/** E{|B&6$[}  
* @author treeroot H`CID*Ji  
* @since 2006-2-2 ;|5-{+2U%  
* @version 1.0 aV'bI  
*/ ;t{q]"? W  
public class ShellSort implements SortUtil.Sort{ ?uq`|1`  
ApCU|*r)  
/* (non-Javadoc) WP L@v+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H{*D c_  
*/ `pfIgryns  
public void sort(int[] data) { Gaix6@X6'  
for(int i=data.length/2;i>2;i/=2){ @Dh2@2`>  
for(int j=0;j insertSort(data,j,i); FOXSs8"c]!  
} LORcf1X/  
} UY< PiP  
insertSort(data,0,1); %qoS(iO`h  
} 1hG#  
 z% wh|q  
/** +-!E% $  
* @param data S\A/*!%~y  
* @param j e2O6q05 ?Q  
* @param i WA`A/`taT  
*/ :-1|dE)U  
private void insertSort(int[] data, int start, int inc) { j,k3]bP  
int temp; h !^= c  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qiNVaV\wr|  
} g_Z tDxz  
} @sXv5kZ:  
} ,|]J aZq  
~#pATPW@(  
} p~$cwbQ!  
O(T5  
快速排序: 1r;zA<<%R  
h[mT4 e3c  
package org.rut.util.algorithm.support; bF"l0 jS  
``-N2U5  
import org.rut.util.algorithm.SortUtil; L'= \|r  
vF27+/2+R  
/** XnyN*}8  
* @author treeroot h aAY=:  
* @since 2006-2-2 ')"+ a^c  
* @version 1.0 |?!i},Ki;  
*/ &W2*'$j"_  
public class QuickSort implements SortUtil.Sort{ 3z8i0  
IO\4dU)  
/* (non-Javadoc) W7S~~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FnO@\{M"A  
*/ C-&ymJC|  
public void sort(int[] data) { f<YYo  
quickSort(data,0,data.length-1); f>N DtG.6  
} %2\Hj0JQQ  
private void quickSort(int[] data,int i,int j){ `z&#|0O  
int pivotIndex=(i+j)/2; #a8kA"X  
file://swap ']M/'CcM  
SortUtil.swap(data,pivotIndex,j); cM#rus?)+  
\ 2\{c1df  
int k=partition(data,i-1,j,data[j]); >+2&7u  
SortUtil.swap(data,k,j); 9kL,69d2  
if((k-i)>1) quickSort(data,i,k-1); bv+u7B6,  
if((j-k)>1) quickSort(data,k+1,j); k#].nQG  
QZzamT)"  
} _ \D %  
/** w*qj0:i5as  
* @param data g>lZs  
* @param i ]S6Gz/4aV+  
* @param j ?KC(WaGJQ  
* @return x)PW4{3qR  
*/ Tuln#<:  
private int partition(int[] data, int l, int r,int pivot) { [9; @1I<x  
do{ UqP{Cyy{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]\(8d[ 4  
SortUtil.swap(data,l,r); s4|\cY`b-  
} QN:v4,$d  
while(l SortUtil.swap(data,l,r); vF72#BNs  
return l; XNz+a|cF  
} "aJHCi~l  
UL+Txc  
} &hOz(825r  
-%asHDQ{  
改进后的快速排序: p* >z:=  
}3(!kW  
package org.rut.util.algorithm.support; 1JJsYX  
owAO&"C  
import org.rut.util.algorithm.SortUtil; }p)K6!J0  
@oXGa>Ru  
/** Y}?8  
* @author treeroot ula-o)S  
* @since 2006-2-2 ')m!48  
* @version 1.0 hG1:E:}  
*/ 86ao{l6lC  
public class ImprovedQuickSort implements SortUtil.Sort {  .U1wVIM  
\x<8   
private static int MAX_STACK_SIZE=4096; g)X3:=['  
private static int THRESHOLD=10; /fI}QY1  
/* (non-Javadoc) 1dH|/9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^? fOccfQ{  
*/ uFkl^2  
public void sort(int[] data) { (@?mm  
int[] stack=new int[MAX_STACK_SIZE]; VBhUh~:Om  
oTw!#Re)  
int top=-1; F? #3  
int pivot; DHO]RRGV  
int pivotIndex,l,r; Blpk n1  
<FT7QO$I  
stack[++top]=0; yJA~4  
stack[++top]=data.length-1; +}:Z9AAMy  
S$mv(C  
while(top>0){ !=[Y yh  
int j=stack[top--]; q}{E![ZTu  
int i=stack[top--]; ) c@gRb~  
8D*7{Q  
pivotIndex=(i+j)/2; 1 .3#PdMR,  
pivot=data[pivotIndex]; 6h:QSVfx  
n Bu!2c  
SortUtil.swap(data,pivotIndex,j); HbTVuf o  
OH`a3E{e  
file://partition M xE]EJZ  
l=i-1; `|t,Uc|7!  
r=j; xl}rdnf}  
do{ RT[p!xL  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cx\"r  
SortUtil.swap(data,l,r); I7ao2aS  
} 1Bytu >2  
while(l SortUtil.swap(data,l,r); i)i>Ulj*i  
SortUtil.swap(data,l,j); 3[m~-8  
'/\  
if((l-i)>THRESHOLD){ `+H=3`}X  
stack[++top]=i; }lZEdF9GhG  
stack[++top]=l-1; GBJL B  
} |XyX%5p*  
if((j-l)>THRESHOLD){ QPlU+5Cx  
stack[++top]=l+1; X4;U4pU#  
stack[++top]=j; `4"8@>D  
} ]!hjKu"  
]S2rqKB  
} )2f#@0SVL  
file://new InsertSort().sort(data); u6|C3,!z"  
insertSort(data); oF%m  
} )G P;KUVae  
/** \/ bd  
* @param data J Enjc/  
*/ %cF`x_h[j  
private void insertSort(int[] data) { ~D52b1f  
int temp; P\U<,f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qt8Y3:=8l  
} OSu&vFKz  
} >M<3!?fW)  
} <8r"QJY/  
8P n  
} +B ?qx Q  
is.t,&H4P]  
归并排序: =EJ&=t  
I%T+H[,  
package org.rut.util.algorithm.support; pbMANZU[  
iOfm:DTPr  
import org.rut.util.algorithm.SortUtil; l}nVWuD  
}x'*3zI  
/** 6)INr,d  
* @author treeroot AL]gK)R  
* @since 2006-2-2 .$U,bE  
* @version 1.0 f:;-ZkIU ?  
*/ *D]:{#C*  
public class MergeSort implements SortUtil.Sort{ G]lGoa}]`u  
w2LnY1A  
/* (non-Javadoc) [gW eD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :jiEn y  
*/ kWzp*<lWe  
public void sort(int[] data) { ~ 'ZwD/!e  
int[] temp=new int[data.length]; iI GK "}  
mergeSort(data,temp,0,data.length-1); *|rdR2R!  
} F^dJ{<yX  
2BccE  
private void mergeSort(int[] data,int[] temp,int l,int r){ WK%cbFq(  
int mid=(l+r)/2; =*UK!y?n  
if(l==r) return ; ;dIk$_FN  
mergeSort(data,temp,l,mid); EC?5GNGT,  
mergeSort(data,temp,mid+1,r); /T _M't@j  
for(int i=l;i<=r;i++){ xm m,- u  
temp=data; S_lGr k\j  
} ing'' _  
int i1=l; Ww<Y]H$xZ<  
int i2=mid+1; ;*%rFt9FK  
for(int cur=l;cur<=r;cur++){ %\'=Y/yP  
if(i1==mid+1) ;c 7I "?@z  
data[cur]=temp[i2++]; h,LSqjf "  
else if(i2>r) 5U 84 *RY  
data[cur]=temp[i1++]; U9 iI2$  
else if(temp[i1] data[cur]=temp[i1++]; H,> }t S  
else J*@pM  
data[cur]=temp[i2++]; J""Cgf  
} lm`*x=x  
} !j!w $  
Y9.3`VX  
} -}7$;QK&a  
dL42)HP5  
改进后的归并排序: @A[)\E1  
%. 1/ #{  
package org.rut.util.algorithm.support; ]d*9@+Iu  
oW~W(h!  
import org.rut.util.algorithm.SortUtil; Zkp~qx  
5/.W-Q\pl}  
/** yi$CkG}  
* @author treeroot &xGdKH  
* @since 2006-2-2 jg$qp%7i%  
* @version 1.0 86#l$QaK{  
*/ Ejk;(rxI  
public class ImprovedMergeSort implements SortUtil.Sort { /&gg].&2?  
~WA@YjQ]  
private static final int THRESHOLD = 10; tZ]gVgZg  
c=sV"r?  
/* *Y>w0k  
* (non-Javadoc) -2.7Z`*(  
* jKUEs75]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |\(uO|)ju  
*/ a`wjZ"}'[  
public void sort(int[] data) { 3kxo1eb  
int[] temp=new int[data.length]; |/,S NE  
mergeSort(data,temp,0,data.length-1); "uH>S+%|b  
} 0i~U(qoI  
#A)V  
private void mergeSort(int[] data, int[] temp, int l, int r) { '_v~+  
int i, j, k; (T1< (YZ  
int mid = (l + r) / 2; &2ED<%hH`  
if (l == r) J v}  
return; {!Qu(%  
if ((mid - l) >= THRESHOLD) ^4sfVpD2!  
mergeSort(data, temp, l, mid); fD!c t;UK  
else G)vNMl  
insertSort(data, l, mid - l + 1); )^:H{1'  
if ((r - mid) > THRESHOLD) m]qw8BoU`F  
mergeSort(data, temp, mid + 1, r); A-Ba%Fv  
else :jTSO d[r  
insertSort(data, mid + 1, r - mid); O84]J:b  
hQ#e;1uD  
for (i = l; i <= mid; i++) { l>6tEOXt  
temp = data; $>)0t@[f  
} 7. F'1oEf  
for (j = 1; j <= r - mid; j++) { [CQR  
temp[r - j + 1] = data[j + mid]; SaPE 1^}  
} eB0exPz%  
int a = temp[l]; <8WFaP3,  
int b = temp[r]; (3n "a'  
for (i = l, j = r, k = l; k <= r; k++) { snaAn?I4  
if (a < b) { "0eX/ rY%  
data[k] = temp[i++]; D!`;vZ\>  
a = temp; ,X!6|l8  
} else { Q}#Je.;  
data[k] = temp[j--]; tpWGmj fo>  
b = temp[j]; xQsxc  
} G+dq */  
} sq$v6x sl  
} OnTe_JML  
5dj" UxH  
/** ]\*^G@HA2  
* @param data _xKn2?d8g  
* @param l  7)2K6<q  
* @param i F`g(vD >  
*/ H07\z1?.K  
private void insertSort(int[] data, int start, int len) { #eW T-m  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yGR{-YwU!  
} *OLqr/ yb  
} 1Q@]b_"Xh  
} .UP h  
} /8GdCac  
.`Rt   
堆排序: z+MH co"  
5` ^@k<  
package org.rut.util.algorithm.support; H )ej]DXy  
ACyK#5E  
import org.rut.util.algorithm.SortUtil; wI@87&  
@R&d<^I&M  
/** 'AA9F$Dz  
* @author treeroot atyvo0fNd  
* @since 2006-2-2 4!dc/K  
* @version 1.0 !!C/($  
*/ 8}|et~7!  
public class HeapSort implements SortUtil.Sort{ f~VlCdf+  
}n^Rcz6HeO  
/* (non-Javadoc) TIGtX]`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $d*9]M4  
*/ 9q'&tU'a=c  
public void sort(int[] data) { (=j;rfvP  
MaxHeap h=new MaxHeap(); U WT%0t_T  
h.init(data); o]1BWwtY&  
for(int i=0;i h.remove(); a7g;8t-&   
System.arraycopy(h.queue,1,data,0,data.length); $INB_/R E  
} 9nR\7!_  
<- \|>r Q  
private static class MaxHeap{ ;wwc;wQ'  
c!IZLaVAr9  
void init(int[] data){ A-!e$yz>  
this.queue=new int[data.length+1]; {s8c@-'  
for(int i=0;i queue[++size]=data; w;lpJ B\  
fixUp(size); /h>g-zb  
} ~nA k-toJ  
} O},}-%G  
ed6@o4D/kf  
private int size=0; re*}a)iL  
=Dn <DV  
private int[] queue; !Se0&Ob  
%#2$B+  
public int get() { yCxYFi  
return queue[1]; D0Q9A]bD;  
} JLu$1A@ '  
rqjq}L)  
public void remove() { g<Z :`00|  
SortUtil.swap(queue,1,size--); R /=rNUe  
fixDown(1); 5m1J&TZ0  
} OHndZ$'fI  
file://fixdown 4\n ~  
private void fixDown(int k) { >ai,6!  
int j; |Y uf/G%/  
while ((j = k << 1) <= size) { x?L[*N_ml  
if (j < size %26amp;%26amp; queue[j] j++; FJ3S  
if (queue[k]>queue[j]) file://不用交换 ;FqmZjm  
break; O=jLZ2os  
SortUtil.swap(queue,j,k); zM0}(5$m  
k = j; h ;*x1BVE  
} YYQvt  
} @;egnXxF<  
private void fixUp(int k) { =gj?!d`  
while (k > 1) { ?oYO !  
int j = k >> 1; IAO5li3  
if (queue[j]>queue[k]) Wk[a|>  
break; BgXZr,?  
SortUtil.swap(queue,j,k); 6l\5J6x  
k = j; AlQhKL}|s  
} mG1~rI  
} C~2!@<y  
p]kEH\ sh  
} @_do<'a  
-lo?16w  
} 9"P+K.%  
M+%Xq0`T  
SortUtil: 6 - 3?&+  
E+\?ptw  
package org.rut.util.algorithm; & 'u|^d  
it}h8:^<  
import org.rut.util.algorithm.support.BubbleSort; <H^jbK  
import org.rut.util.algorithm.support.HeapSort; |u>V> PN  
import org.rut.util.algorithm.support.ImprovedMergeSort; v.]{b8RR  
import org.rut.util.algorithm.support.ImprovedQuickSort; $5XA S  
import org.rut.util.algorithm.support.InsertSort; Cfi4~&  
import org.rut.util.algorithm.support.MergeSort; BdD]HXB|_  
import org.rut.util.algorithm.support.QuickSort; vm@V5oH  
import org.rut.util.algorithm.support.SelectionSort; ) ^ En  
import org.rut.util.algorithm.support.ShellSort; rD}g9?ut  
T 6D+@i  
/** boojq{cvYA  
* @author treeroot 3H,x4L5j  
* @since 2006-2-2 "AagTFs(i  
* @version 1.0 c 4AJ`f.5  
*/ wa@Rlzij>  
public class SortUtil { !Q>xVlPVu  
public final static int INSERT = 1; { { \oC$  
public final static int BUBBLE = 2; $UzSPhv[  
public final static int SELECTION = 3; KPToyCyR1  
public final static int SHELL = 4; A}lxJ5h0  
public final static int QUICK = 5; % mQ&pk  
public final static int IMPROVED_QUICK = 6; as@8L|i*  
public final static int MERGE = 7; qxI $F  
public final static int IMPROVED_MERGE = 8; ?-j/X6(\(  
public final static int HEAP = 9; 3S3 a|_+%  
+<Gp >c  
public static void sort(int[] data) { MnD}i&k[  
sort(data, IMPROVED_QUICK); 5'set?  
} |&4A"2QN  
private static String[] name={ 7L #)yY  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" no+ m.B  
}; |Z>-<]p9g  
 N}5  
private static Sort[] impl=new Sort[]{ d}O\:\}y  
new InsertSort(), 2WS*c7Ct  
new BubbleSort(), &h/r]KrZ  
new SelectionSort(), {z>!Fw  
new ShellSort(), `dm*vd  
new QuickSort(), &>AwG4HW#j  
new ImprovedQuickSort(), My>q%lF=fw  
new MergeSort(), bpc1> ?  
new ImprovedMergeSort(), 8oE`>Y  
new HeapSort() J!om"h  
}; x{;{fMN1  
5$ik|e^:y  
public static String toString(int algorithm){ u4hn9**a1  
return name[algorithm-1]; Mst%]@TG  
} P7w RX F{  
a6gw6jQ  
public static void sort(int[] data, int algorithm) { N5K(yY_T  
impl[algorithm-1].sort(data); -L/%2 X  
} N)mZ!K44  
` +YtTK  
public static interface Sort { mP*$wE9b,:  
public void sort(int[] data); Dspvc  
} /rpr_Xw}  
^1){ @(  
public static void swap(int[] data, int i, int j) { 6 5zx<  
int temp = data; hr]+ 4!/  
data = data[j]; Vja 4WK*  
data[j] = temp; Un8' P8C  
} (EcP'F*;;y  
} pT=^o  
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