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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。 (?zg.y  
插入排序: p%I)&- 8  
7}iv+rQ  
package org.rut.util.algorithm.support; $N?8[  
hQ#e;1uD  
import org.rut.util.algorithm.SortUtil; .IW`?9O$E  
/** J[ }H^FR  
* @author treeroot '!m6^*m|c  
* @since 2006-2-2 xpdpD  
* @version 1.0 1T|f<ChIF<  
*/ eB0exPz%  
public class InsertSort implements SortUtil.Sort{ <8WFaP3,  
(3n "a'  
/* (non-Javadoc) snaAn?I4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JM7mQ'`Ud  
*/ ?L<B]!9HZt  
public void sort(int[] data) { ~& -h5=3  
int temp; 5RPG3ppS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sVyV|!K  
} r;Sk[Y5#  
} u=:f%l  
} :T-DxP/  
+bumWOQ'  
} }4 0T'y  
'| i?-(f)  
冒泡排序: 0B.Gt&O al  
[c{\el9H  
package org.rut.util.algorithm.support; FL{Uz+Q  
/A{ Zf'DI  
import org.rut.util.algorithm.SortUtil; x2!R&q8U>  
K P]ar.  
/** U9oUY> 9  
* @author treeroot {/QVs?d  
* @since 2006-2-2 <-I69`  
* @version 1.0 --$* q"  
*/ =WTSaC  
public class BubbleSort implements SortUtil.Sort{ XIwJhsYZ'9  
!q\8`ss  
/* (non-Javadoc) d:)#-x*h7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @7 Ry{,A  
*/ kcfT|@:MK"  
public void sort(int[] data) { ^xe+(83S2?  
int temp; @!`__>K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T;6MUmyC  
if(data[j] SortUtil.swap(data,j,j-1); 'AA9F$Dz  
} atyvo0fNd  
} 4!dc/K  
} n&[CTOV  
} vPDw22L;'  
5cP yi/  
} P%2v(  
 [ <X%  
选择排序: A.>mk598  
]oP1c-GEk  
package org.rut.util.algorithm.support; U WT%0t_T  
/DAR'9@h  
import org.rut.util.algorithm.SortUtil; G*9(O:  
<Y yE1 |  
/** (%6fMVp  
* @author treeroot %7ngAIg  
* @since 2006-2-2 hTDK[4e  
* @version 1.0 {s8c@-'  
*/ UF+Qx/4h0  
public class SelectionSort implements SortUtil.Sort { uSfHlN4l  
!1l~UB_  
/* n3iiW \  
* (non-Javadoc) v]k-x n|$j  
* s|\)Y*B`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %jL^sA2;c+  
*/ p}^G#h{  
public void sort(int[] data) { DhE-g<  
int temp; b1C)@gl!Z  
for (int i = 0; i < data.length; i++) { [lzd'  
int lowIndex = i; ,iV%{*p]  
for (int j = data.length - 1; j > i; j--) { @f-:C+(Nsg  
if (data[j] < data[lowIndex]) { gH//@`6  
lowIndex = j; s!IIvF  
} 3-/|G-4k7  
} ]y@A=nR  
SortUtil.swap(data,i,lowIndex); Da-Lf2qT9  
} x?L[*N_ml  
} FJ3S  
@1*^ttC  
} phy}Hk/  
av'm$I|O  
Shell排序: oh{>nwH  
7DAP_C  
package org.rut.util.algorithm.support; h ;*x1BVE  
H~FI@Cf$L  
import org.rut.util.algorithm.SortUtil; 3X gJZ  
2F2Hl   
/** DZqPCMz)^  
* @author treeroot k!Yc_ZB:*l  
* @since 2006-2-2 cC-8.2  
* @version 1.0 RRja{*R  
*/ Kn^+kHh:  
public class ShellSort implements SortUtil.Sort{ W1REF9i){  
]Q"T8drL  
/* (non-Javadoc) TsFhrtnx&X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -lo?16w  
*/ 9"P+K.%  
public void sort(int[] data) { YdhV a!Y  
for(int i=data.length/2;i>2;i/=2){ <@Q27oEuA  
for(int j=0;j insertSort(data,j,i); d]0:r]e  
} w;,34qbf  
} T?RY~GA  
insertSort(data,0,1); it}h8:^<  
} o898pg  
27!F B@k-  
/** {4S UG o>  
* @param data ~uhW~bT  
* @param j AMyg>n!  
* @param i Y#os6|MV#  
*/ ~:Rbd9IB  
private void insertSort(int[] data, int start, int inc) { 0z/*JVka  
int temp; _}5vO$kdO  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $9YQ aN%  
} Pxl,"  
} :'T+`(  
} 2^B_iyF;  
"AagTFs(i  
} J.UNw8z  
{]\7 M|9\  
快速排序: wa@Rlzij>  
!Q>xVlPVu  
package org.rut.util.algorithm.support; wh(_<VZ  
KkUK" Vc  
import org.rut.util.algorithm.SortUtil; KPToyCyR1  
A}lxJ5h0  
/** % mQ&pk  
* @author treeroot DWU=qD+  
* @since 2006-2-2 Ur+U#}  
* @version 1.0 Ae7FtJO  
*/ 54p{J  
public class QuickSort implements SortUtil.Sort{ @g#5d|U);  
+QN4hJK  
/* (non-Javadoc) c+ZOC8R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?!Y_w2  
*/ Z#}sK5s  
public void sort(int[] data) { z\eQB%aM  
quickSort(data,0,data.length-1); l9 \W=-'  
} #]dm/WzY  
private void quickSort(int[] data,int i,int j){ JL,Y9G*]s  
int pivotIndex=(i+j)/2; b|_e):V|  
file://swap M+:5gMB'  
SortUtil.swap(data,pivotIndex,j); [3X\"x5@V  
}F]Z1('  
int k=partition(data,i-1,j,data[j]); at?I @By  
SortUtil.swap(data,k,j); I7_lKr3  
if((k-i)>1) quickSort(data,i,k-1); 48 -j  
if((j-k)>1) quickSort(data,k+1,j); TyV~2pc N  
L!:NL#M  
} :|(YlNUv  
/** )Ra:s>  
* @param data eQi^d/yi  
* @param i L]MWdD  
* @param j K^!#;,0  
* @return $]LS!@ Rm  
*/ V< F &\  
private int partition(int[] data, int l, int r,int pivot) { I3>8B  
do{ N'y<<tTA  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N7s0Ua'-v  
SortUtil.swap(data,l,r); Gbhw7 (&  
} -;gQy[U  
while(l SortUtil.swap(data,l,r); '=;e# C`<{  
return l; F`4W5~`  
} x:-NTW -g  
:Fhk$?/r  
} s={>{,E  
KH,f'`  
改进后的快速排序: w!"A$+~  
_jX,1+M  
package org.rut.util.algorithm.support; `LoRudf_`  
5=V"tQ&d9U  
import org.rut.util.algorithm.SortUtil; J%"5?)[z  
_=0Ja S>M.  
/** "&H'?N%9Up  
* @author treeroot N&G'i.w/  
* @since 2006-2-2 X QLP|v;"  
* @version 1.0 U LS>v  
*/ -o~zb-E  
public class ImprovedQuickSort implements SortUtil.Sort { J3y _JoS  
uNI&U7_"  
private static int MAX_STACK_SIZE=4096; $Z;8@O3  
private static int THRESHOLD=10; ;>2-  
/* (non-Javadoc) koT3~FK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P?q HzNGi7  
*/ @{b5x>KX  
public void sort(int[] data) { v9H t~\>  
int[] stack=new int[MAX_STACK_SIZE]; A!GvfmzqIn  
CE M4E  
int top=-1; W^09tx/I  
int pivot; 07SW$INb  
int pivotIndex,l,r; ga|<S@u?}  
%( OP  [  
stack[++top]=0; /\Nc6Z/ L  
stack[++top]=data.length-1; FV9{u[3m  
X[Iy6qt  
while(top>0){ zx<t{e7  
int j=stack[top--]; gH7  +#/  
int i=stack[top--]; \j!/l f)  
0m1V@ 3]7>  
pivotIndex=(i+j)/2; (_#E17U)_  
pivot=data[pivotIndex]; egsP\ '  
& PXT$x[i  
SortUtil.swap(data,pivotIndex,j); {*bx8*y1  
T[OI/ WuK  
file://partition -Y+pLvG*  
l=i-1; Re~6 '  
r=j; dlvU=^G#G  
do{ r3x;lICx-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]+`K\G ^X  
SortUtil.swap(data,l,r); TNh&g.  
} V^tD@N  
while(l SortUtil.swap(data,l,r); T x Mh_  
SortUtil.swap(data,l,j); J8\l'} ?&  
f~l pa7  
if((l-i)>THRESHOLD){ ]?_~QE`  
stack[++top]=i; :V6 [_VaF  
stack[++top]=l-1; LS*L XC  
} zq + 2@"q  
if((j-l)>THRESHOLD){ nN$.^!;&  
stack[++top]=l+1; #rW-jW=A  
stack[++top]=j; \V'fB5  
} VEa"^{,w  
:C^{Lc  
} [BdRx`  
file://new InsertSort().sort(data); ,(oolx"Xa  
insertSort(data); t$qIJt$  
} PJ:!O?KVq  
/** j+'ua=T3  
* @param data O: I]v@  
*/ i5(qJ/u  
private void insertSort(int[] data) { n]vCvmt  
int temp; [3=Y 9P:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); , l!>+@  
} An>ai N]  
} +D @B eQu  
} vy2<'V*y}  
\6GNKeN  
} ]UIN4E  
{_W8Qm`.  
归并排序: v 2rzHzFU  
5f_x.~ymA  
package org.rut.util.algorithm.support; c^"4l 9w  
nv0D4 t  
import org.rut.util.algorithm.SortUtil; OE[7fDe'  
5X3JQ"z  
/** 7]So=% q  
* @author treeroot LTBH/[q5  
* @since 2006-2-2 X)(K|[  
* @version 1.0 V1P]pP  
*/ 3W ]zLUn  
public class MergeSort implements SortUtil.Sort{ Q7pCF,;  
]~$@x=p2e  
/* (non-Javadoc) C!547(l[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 29 !QE>Q  
*/ &!;o[joG  
public void sort(int[] data) { c{`!$Z'k<  
int[] temp=new int[data.length]; ((AK7hb  
mergeSort(data,temp,0,data.length-1); mGg/F&G9  
} BbFLT@W4  
~9@527m<',  
private void mergeSort(int[] data,int[] temp,int l,int r){ U*N{H$ACuR  
int mid=(l+r)/2;  \aof  
if(l==r) return ; 6qQ_I 0f  
mergeSort(data,temp,l,mid); s`Z.H5V>\  
mergeSort(data,temp,mid+1,r); G$_)X%Vb I  
for(int i=l;i<=r;i++){ {8":c n j  
temp=data; QgH{J8 0  
} ekfa"X_  
int i1=l; ^Rl?)_)1HE  
int i2=mid+1; i \Yd_  
for(int cur=l;cur<=r;cur++){ %q r,Ssa/  
if(i1==mid+1) 5mVO9Q j  
data[cur]=temp[i2++]; jB9~'>JY  
else if(i2>r) &B :L9^  
data[cur]=temp[i1++]; rpEIDhHv  
else if(temp[i1] data[cur]=temp[i1++]; 2T%sHp~qt  
else e6J>qwD?  
data[cur]=temp[i2++];  3bd`q $  
} w&}<b%l  
} ,;MUXCC'  
N DI4EA~z  
} Q<szH1-  
,d!@5d&Zi  
改进后的归并排序: irw5<l  
82)=#ye_P  
package org.rut.util.algorithm.support; |ggtb\W  
VNz? e&>  
import org.rut.util.algorithm.SortUtil; _ZJQE>]nWu  
Nz"K`C>/  
/** %c$|.TkX  
* @author treeroot 2>.b~q@  
* @since 2006-2-2 ~T9QpL1OJ  
* @version 1.0 q|klsup  
*/ K)1Lg? j  
public class ImprovedMergeSort implements SortUtil.Sort { aox@- jyr  
TWRnty-C  
private static final int THRESHOLD = 10; u"T9w]Z\  
<tO@dI$~>  
/* 1DU l<&4  
* (non-Javadoc) GM8>u O  
* {&Rz>JK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `X ()"Qw  
*/ 2u0B=0x  
public void sort(int[] data) { ETX>wZ  
int[] temp=new int[data.length]; AL&<SxuP  
mergeSort(data,temp,0,data.length-1); 1f"}]MbLR  
} Gys-Im6>~@  
G.N `  
private void mergeSort(int[] data, int[] temp, int l, int r) { uARkf'  
int i, j, k; N*PJ m6-  
int mid = (l + r) / 2; d@8: f  
if (l == r) vN]_/T+  
return; R:'&>.AUw  
if ((mid - l) >= THRESHOLD)  D5Jg(-  
mergeSort(data, temp, l, mid); V2;Nv\J\  
else xU{0rM"  
insertSort(data, l, mid - l + 1); ,'<NyA><  
if ((r - mid) > THRESHOLD) 4QPHT#eqX  
mergeSort(data, temp, mid + 1, r); >#;_Ebl@  
else 2w~Vb0  
insertSort(data, mid + 1, r - mid); 8"LM:0x  
[EVyCIcY,h  
for (i = l; i <= mid; i++) { C>-}BeY!  
temp = data; 5yJ~ q  
} J?E!\V&U  
for (j = 1; j <= r - mid; j++) { ^%6f%]_  
temp[r - j + 1] = data[j + mid]; QYj 4D  
} sVnq|[ /  
int a = temp[l]; W<O/LHKHdn  
int b = temp[r]; <Vh5`-J  
for (i = l, j = r, k = l; k <= r; k++) { <Nloh+n=  
if (a < b) { t"~X6o|R  
data[k] = temp[i++]; 1 K^-tms  
a = temp; {65Y Tt%  
} else { G7GKO  
data[k] = temp[j--]; ZOppec1D  
b = temp[j]; 64y9.PY  
} cdI"=B+C\  
} &P*r66  
} Dl\0xcE  
-EU=R_yg  
/** )\W}&9 >  
* @param data 6Y.k<oem  
* @param l hr&UD|E=  
* @param i "cOBEhn%l  
*/ vZ6R>f  
private void insertSort(int[] data, int start, int len) { P $r!u%W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); J!Rqm!)q  
}   LR4W  
} f*m^x7  
} I;<__  
} l4I',79l  
$fPiR  
堆排序: 3EA_-?  
Oz xiT +  
package org.rut.util.algorithm.support; Un+-  T  
w8KxEV=  
import org.rut.util.algorithm.SortUtil; qM>Dt  
W3X;c*j  
/** or)fx/%h  
* @author treeroot |\C.il7  
* @since 2006-2-2 ,W]}mqV%.'  
* @version 1.0 h7xgLe@  
*/ h-m0Ro?6  
public class HeapSort implements SortUtil.Sort{ b$*G&d5  
Jcp=<z*0  
/* (non-Javadoc) 20A:,pMb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .Rb4zLYL*w  
*/ ~jWpD7px  
public void sort(int[] data) { UU#$Kt*frR  
MaxHeap h=new MaxHeap(); }$@K   
h.init(data); e&m TaCLG  
for(int i=0;i h.remove(); @ L/i  
System.arraycopy(h.queue,1,data,0,data.length); -H 5-6w$  
} #TgP:t]p  
+\vN#xDz  
private static class MaxHeap{ $ Fy)+<  
Sx_j`Cgy  
void init(int[] data){ n@oSLo`k,`  
this.queue=new int[data.length+1]; ~(cqFf  
for(int i=0;i queue[++size]=data; u b@'(*  
fixUp(size); 0 zjGL7  
} E /ycPqD  
} 7=A @P  
tg~7^(s  
private int size=0; )_ l( WF.  
'E\qqE[;  
private int[] queue; tK\$LZ  
(+TL ]9P  
public int get() { ?J"Y4,{  
return queue[1]; `K2vG`c  
} fKs3H?|  
CZCVC (/u  
public void remove() { 2\Yv;J+;  
SortUtil.swap(queue,1,size--); |fn%!d`2  
fixDown(1); U71A#OD^U  
} L[:M[,?=`  
file://fixdown .4=A:9  
private void fixDown(int k) { d%1 Vby  
int j; 6x@]b>W  
while ((j = k << 1) <= size) { c[?&;# feV  
if (j < size %26amp;%26amp; queue[j] j++; 1fh6A`c  
if (queue[k]>queue[j]) file://不用交换 u/`x@u  
break; Ap}`Q(.  
SortUtil.swap(queue,j,k); _`9WNJiL  
k = j; uVw|jj  
} S.owVMQ  
} <FvljKuq+  
private void fixUp(int k) {  8KzH -  
while (k > 1) { _<)HFg6  
int j = k >> 1; =?hbi]  
if (queue[j]>queue[k]) H|cxy?iJ  
break; 1a#R7chl  
SortUtil.swap(queue,j,k); ve*6WDK,H  
k = j; )U2%kmt  
} Z1DF)  
} &Qv%~dvW  
sDy~<$l?  
} Nw3IDy~T  
mZ#IP  
} NV3oJ0f&2  
#@L<<Q8}  
SortUtil: & y7~  
dQAo~] B  
package org.rut.util.algorithm; M[&p[P@  
2AjP2  
import org.rut.util.algorithm.support.BubbleSort; x=44ITe1n[  
import org.rut.util.algorithm.support.HeapSort; p"NuR4   
import org.rut.util.algorithm.support.ImprovedMergeSort; ;BEX|w xn  
import org.rut.util.algorithm.support.ImprovedQuickSort; }An;)!>(nF  
import org.rut.util.algorithm.support.InsertSort; Olq`mlsK  
import org.rut.util.algorithm.support.MergeSort; liH1r1M  
import org.rut.util.algorithm.support.QuickSort; p/jAr+XM  
import org.rut.util.algorithm.support.SelectionSort; 9Cw !<  
import org.rut.util.algorithm.support.ShellSort; v/G^yZa  
??Dv\yLZI  
/** Ozc9yy!%  
* @author treeroot ze#ncnMo  
* @since 2006-2-2 M`@Es#s  
* @version 1.0 V8z*mnD  
*/ {?uswbk.  
public class SortUtil { ^}hSsE  
public final static int INSERT = 1; x1QL!MB  
public final static int BUBBLE = 2; Ua>.k|>0  
public final static int SELECTION = 3; $K!6T  
public final static int SHELL = 4; 3WY:Fn+#  
public final static int QUICK = 5; R #m1Aa  
public final static int IMPROVED_QUICK = 6; FHZQyO<|  
public final static int MERGE = 7; <Ow+LJWQK  
public final static int IMPROVED_MERGE = 8; NJ!}(=1|K  
public final static int HEAP = 9; 9CHn6 v ~)  
P6 mDwR  
public static void sort(int[] data) {  W o$UV  
sort(data, IMPROVED_QUICK); El3Ayd3  
} i&,1  
private static String[] name={ /C[XC7^4'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N|s8PIcSp  
}; x@<!#d+  
l65Qk2<YC  
private static Sort[] impl=new Sort[]{ t? _{  
new InsertSort(), O>arCr=H  
new BubbleSort(), fH;lh-   
new SelectionSort(), Oat #%  
new ShellSort(), D?9EO=  
new QuickSort(), @|Hx >|p  
new ImprovedQuickSort(), 8BM[c;-{g`  
new MergeSort(), o%73M!-  
new ImprovedMergeSort(), <+; cgF!+  
new HeapSort() 78u=Jz6  
}; *(Us:*$W.  
U,^jN|v  
public static String toString(int algorithm){ 'J#uD|9)  
return name[algorithm-1]; |>=\ VX17  
} _zFJ]7Ym.)  
ut9R] 01:  
public static void sort(int[] data, int algorithm) { .h;X5q1  
impl[algorithm-1].sort(data); <p8>"~ R  
} (I(k$g[>  
Y@V6/D} 1  
public static interface Sort { uBBW2  
public void sort(int[] data); _jrkR n1"  
} 4fdO Ow  
x9H qc9q  
public static void swap(int[] data, int i, int j) { Gjf1Ba  
int temp = data; %{";RfSVX%  
data = data[j]; Y t0s  
data[j] = temp; ;i;;{j@$i  
} |#(g 8ua7  
} L~L]MC&  
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