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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。 $if(`8  
插入排序: _a*Wk  
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package org.rut.util.algorithm.support; 3SQ 5C' E  
"_'9KBd!  
import org.rut.util.algorithm.SortUtil; J+?xfg  
/** ?h>mrj  
* @author treeroot 1t!Mg{&e[x  
* @since 2006-2-2 8qBRO[  
* @version 1.0 7F?^gMi  
*/ v-G(bw3  
public class InsertSort implements SortUtil.Sort{ hPFIf>%}  
`-ENKr]  
/* (non-Javadoc)  Mw'd<{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cx_"{`+e  
*/ ;5y4v  
public void sort(int[] data) { s3kh (N  
int temp; Y/Y746I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); " I`YJEv  
} WlZ[9,:p1  
} m U7Ad"  
} >47,Hq:2  
Zb2 B5( 0  
} d:sUh  
2b|vb}|t{  
冒泡排序: wK#UFOp  
-ZihEyG?V  
package org.rut.util.algorithm.support; B0Z*YsbXL  
Y,E:?  
import org.rut.util.algorithm.SortUtil; 62vz 'b  
*QLl jGe  
/** ,u]kZ]  
* @author treeroot O gHWmb  
* @since 2006-2-2 V i#(x9.  
* @version 1.0 H`@x5RjS   
*/ >Ckb9A  
public class BubbleSort implements SortUtil.Sort{ Za}91z"  
yx/:<^"-$  
/* (non-Javadoc) X#eVw|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TR)' I  
*/ de ](l687I  
public void sort(int[] data) { |u;5|i  
int temp; /[EI0 ~P  
for(int i=0;i for(int j=data.length-1;j>i;j--){ R~Xl(O  
if(data[j] SortUtil.swap(data,j,j-1); o_G.J4 V  
} MF E%q  
} f$WO{ J  
} PwDQ<   
} @ $(4;ar  
2EE#60  
} +U6! bu>C  
* rs_k/2(  
选择排序: >/'WU79TYE  
N+}yw4lb  
package org.rut.util.algorithm.support; <,cDEN7  
9U;) [R Mb  
import org.rut.util.algorithm.SortUtil; R`$Odplh>  
DDkO g]  
/** e dD(s5  
* @author treeroot 6s|C:1](b  
* @since 2006-2-2 jliKMd<?  
* @version 1.0 '-v~HwC+/T  
*/  %gf8'Q  
public class SelectionSort implements SortUtil.Sort { ]q?<fEG2<  
C(gH}N4  
/* *YDx6\><  
* (non-Javadoc) v.Q)Obyn  
* ZMx<:0ai  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =n#xnZ3  
*/ ke/o11LP  
public void sort(int[] data) { bo@1c0  
int temp; I.( 9{  
for (int i = 0; i < data.length; i++) { 8"S0E(,mu  
int lowIndex = i; p6ZKyi  
for (int j = data.length - 1; j > i; j--) { 0c`wJktWK  
if (data[j] < data[lowIndex]) { u|w[ b9^r  
lowIndex = j; Ig9$ PP+3  
} (sPZ1Fr\o  
} Mv ;7kC7]  
SortUtil.swap(data,i,lowIndex); I/'jRM  
} vwT?Bp  
} Cjwg1?^RZ  
Li7/pUq>}!  
} {cG&l:-r  
ZB%7Sr0  
Shell排序: HF0J>Clq  
pG|DT ?  
package org.rut.util.algorithm.support; oFY'Ek;d  
#%E~I A%  
import org.rut.util.algorithm.SortUtil; fw-LZ][  
"\e9Y<  
/** xOEj+%M  
* @author treeroot o 0fsM;K  
* @since 2006-2-2 i  #8)ad  
* @version 1.0 G `TO[p]q  
*/ ^IC|3sr   
public class ShellSort implements SortUtil.Sort{ $@DXS~UQA  
jg2>=}  
/* (non-Javadoc) 1tfm\/V}ho  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jagsV'o2  
*/ 5 kQC  
public void sort(int[] data) { HhIa=,VY  
for(int i=data.length/2;i>2;i/=2){ ]V}";cm;2  
for(int j=0;j insertSort(data,j,i); T} U`?s`)  
} c!6.D  
} C'hZNFsF;  
insertSort(data,0,1); &Tl3\T0D  
} ](3=7!!J  
%m{h1UQQ +  
/** ~|+   
* @param data ld}- }W-cq  
* @param j $S3C_..  
* @param i j].XVn,  
*/ Y+lZT4w  
private void insertSort(int[] data, int start, int inc) { 'BtvT[KM  
int temp; lP0'Zg(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9Yd<_B#  
} C+jlIT+  
} ;5dJ5_}  
} jIg]?4bW[  
sF f@>  
} kwWDGA?zFB  
_-^a8F>/19  
快速排序: CKy' 8I9  
8+^q9rLii  
package org.rut.util.algorithm.support; p~BEz?e  
<Y9e n!3\  
import org.rut.util.algorithm.SortUtil; bRfac/:}  
|+f@w/+  
/** lE'2\kxI?  
* @author treeroot <0T|RhbY   
* @since 2006-2-2 K>N\U@@8i  
* @version 1.0 EWrIDZi  
*/ VMXccT9i!  
public class QuickSort implements SortUtil.Sort{ ACctyGd  
^|hlY ]Ev  
/* (non-Javadoc) T1_O~<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kZ>_m &g  
*/ E{k$4  
public void sort(int[] data) { #p*D.We  
quickSort(data,0,data.length-1); lK 5@qG#  
} TkBHlTa"=  
private void quickSort(int[] data,int i,int j){ gF# HNv  
int pivotIndex=(i+j)/2; ?(0=+o(`  
file://swap O`K2mt\%  
SortUtil.swap(data,pivotIndex,j); [;t-XC?[nk  
-n FKP&P  
int k=partition(data,i-1,j,data[j]); xy))}c%  
SortUtil.swap(data,k,j); "ngULpb{R  
if((k-i)>1) quickSort(data,i,k-1); ' Dcj\=8  
if((j-k)>1) quickSort(data,k+1,j); ;x%"o[[>  
0Un?[O  
} 0Q?)?8_  
/** _t&` T  
* @param data & OYo  
* @param i N,W ?}  
* @param j e`n+U-)z  
* @return ZP{<f~;  
*/ DK)T2{:  
private int partition(int[] data, int l, int r,int pivot) { z_93j3 #  
do{ M8nfbc^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7-:R{&3Lm:  
SortUtil.swap(data,l,r); !]5}N^X  
} &^2SdF  
while(l SortUtil.swap(data,l,r); &hEn3u  
return l; 3ew4QPT'  
} L4,b ThSG  
 J3`0i@  
} XeX\u3<D  
?iZ2sRWR6  
改进后的快速排序: Nv=78O1  
2ah%,o  
package org.rut.util.algorithm.support; _j+!Fd  
t0+i ]lr  
import org.rut.util.algorithm.SortUtil; Jsl2RdI  
`78Bv>[A  
/** NV7k@7_{B  
* @author treeroot d]poUN~x  
* @since 2006-2-2 N_I KH)  
* @version 1.0 9w$m\nV  
*/ Q F)\\ D[  
public class ImprovedQuickSort implements SortUtil.Sort { 1W\E`)Z}]  
k,[*h-{8  
private static int MAX_STACK_SIZE=4096; DmpT<SI+!  
private static int THRESHOLD=10; zcKQD)]  
/* (non-Javadoc) u<Y#J,p`e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d2V X\  
*/ RWc<CQcL"  
public void sort(int[] data) { yVII<ImqIH  
int[] stack=new int[MAX_STACK_SIZE]; 12a`,~  
L8 L1_  
int top=-1; qT48Y  
int pivot; 6$6QAW0+f  
int pivotIndex,l,r; VGmvfhf#"  
PD)"od  
stack[++top]=0; [ n7>g   
stack[++top]=data.length-1; F}5d>nw  
s{-gsSmE  
while(top>0){ %WgN+A0  
int j=stack[top--]; Gq^vto  
int i=stack[top--]; f<NR6],}  
<.Ws; HN}  
pivotIndex=(i+j)/2; >> zd  
pivot=data[pivotIndex]; ]K"&Vd  
N-gYamlQ  
SortUtil.swap(data,pivotIndex,j); |;vQ"8J  
<7M-?g:vj  
file://partition /' + >/  
l=i-1; a YWWln  
r=j; q`VL i  
do{ r 3W3;L   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :OG I|[  
SortUtil.swap(data,l,r); m1l6QcT1  
} 2;8m0+tl  
while(l SortUtil.swap(data,l,r); f8Iddm#  
SortUtil.swap(data,l,j); -QrC>3xZR  
H$KO[mW}  
if((l-i)>THRESHOLD){ %2?+:R5.  
stack[++top]=i; =l/6-j^  
stack[++top]=l-1; 4J2^zx,H  
} JZ:@iI5>+  
if((j-l)>THRESHOLD){ yD7BZI xW  
stack[++top]=l+1; i[o 2(d,  
stack[++top]=j; nlwqSXw  
} A&Y5z[p  
EY,jy]|#  
} 9} (w*>_L  
file://new InsertSort().sort(data); j/FLEsU!R  
insertSort(data); e$# *t  
} fpD$%.y'J  
/** xN1P#  
* @param data hH %>  
*/ 9R50,l sE  
private void insertSort(int[] data) { .%zcm  
int temp; Wg']a/m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c3$T3Lu1  
} ~r1pO#r-  
} |$RNY``J  
} Dac)`/  
(_T{Z>C/J  
} apvcWF%  
;<[X\;|'  
归并排序: (l{vlFWd  
. %RM8  
package org.rut.util.algorithm.support; at: li  
;cor\ R  
import org.rut.util.algorithm.SortUtil; Ql*zl  
x:Y9z_)O  
/** _yg_?GH  
* @author treeroot *{g3ia  
* @since 2006-2-2 @~3--  
* @version 1.0 iUx\3d,  
*/ }>A q<1%  
public class MergeSort implements SortUtil.Sort{ 7=!9kk0  
(]|h6aI'}  
/* (non-Javadoc) wQ}r/2n|^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0> f!S` *  
*/ uO?+vYAN  
public void sort(int[] data) { ).T&fa"  
int[] temp=new int[data.length]; $ghZ<Y2}9  
mergeSort(data,temp,0,data.length-1); 5/meH[R\M  
} N]<(cG&p  
\br!77  
private void mergeSort(int[] data,int[] temp,int l,int r){ }F`|_8L*v)  
int mid=(l+r)/2; ZnG.::&:  
if(l==r) return ; 2MkrVQQ9g  
mergeSort(data,temp,l,mid); i?00!t  
mergeSort(data,temp,mid+1,r); hW^,' m  
for(int i=l;i<=r;i++){ 9t`;~)o  
temp=data; 3DU1c?M:  
} |)-kUu  
int i1=l; I>c,Bo7  
int i2=mid+1; Dk1& <} I  
for(int cur=l;cur<=r;cur++){ _;lw,;ftA  
if(i1==mid+1) \}jMC  
data[cur]=temp[i2++]; b}e1JPk}!  
else if(i2>r) Q&9 yrx.  
data[cur]=temp[i1++]; 0I}e>]:I  
else if(temp[i1] data[cur]=temp[i1++]; sZ;|NAx)  
else 96=<phcwN[  
data[cur]=temp[i2++]; l_B735  
} kfy!T rf  
} 0|3I^b  
C2 N+X(  
} \Mf>X\}  
|s8N  
改进后的归并排序: O-iE0t  
.*O*@)}Ud  
package org.rut.util.algorithm.support; Q*ITs!~Z  
4l D$'`  
import org.rut.util.algorithm.SortUtil; "oP^2|${  
_Q V=3UWP  
/** jhu &Wh  
* @author treeroot mHD_cgKN  
* @since 2006-2-2 [Nyt0l "z  
* @version 1.0 G0FzXtu)q  
*/ =BJLj0=N  
public class ImprovedMergeSort implements SortUtil.Sort { _e%D/}  
W4^L_p>Tm^  
private static final int THRESHOLD = 10; i'~-\F!  
m/HT3<F  
/* 3JazQU  
* (non-Javadoc) w5FIHYl6B  
* 0K!3Ny9(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FU`(mQ*Yd  
*/ \#sD`O  
public void sort(int[] data) { |IxHtg3>6{  
int[] temp=new int[data.length]; cNll??j  
mergeSort(data,temp,0,data.length-1); *TOdIq&z  
} 5Xy(za  
Ky3mz w|  
private void mergeSort(int[] data, int[] temp, int l, int r) { mz?<t/$U  
int i, j, k; _&KqmQ8$7  
int mid = (l + r) / 2; awLvLkQb{  
if (l == r) =lacfPS  
return; r>mBe;[TX  
if ((mid - l) >= THRESHOLD) y\Wn:RR1[  
mergeSort(data, temp, l, mid); -t-f&`S||  
else JsaXI:%1  
insertSort(data, l, mid - l + 1); #G9 W65f  
if ((r - mid) > THRESHOLD) ns[/M~_r  
mergeSort(data, temp, mid + 1, r); 8 $FH;=  
else L!f~Am:#  
insertSort(data, mid + 1, r - mid); g)Z8WH$;H3  
+LHU}'|  
for (i = l; i <= mid; i++) { Iu'9yb  
temp = data; 7UTfafOGX  
} srS!X$cec  
for (j = 1; j <= r - mid; j++) { ]4~Yi1]  
temp[r - j + 1] = data[j + mid]; B4s$| i{D  
} &61U1"&$R  
int a = temp[l]; Sv=YI  
int b = temp[r]; 0d2P   
for (i = l, j = r, k = l; k <= r; k++) { oZ{,IZ45  
if (a < b) { _{|a<Keq|  
data[k] = temp[i++]; ~!uX"F8Xl  
a = temp; }G4I9Py  
} else { R~<N*En~  
data[k] = temp[j--]; +'F;\E  
b = temp[j]; 14$%v;Su4  
} -"-.Z&#  
} _z p<en[  
} (l5p_x  
7cc^n\c?Y  
/** *%uzLW0  
* @param data gUiO66#x  
* @param l wd:Yy  
* @param i r3V1l8MV  
*/ `IN!#b+Eo  
private void insertSort(int[] data, int start, int len) { s|IBX0^@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pPL=(9d  
} n7> |$2Y  
} @Y0ZW't  
} %/dOV[/  
} $(}rTm  
CU=sQfE  
堆排序: ]p|?S[!=  
MlTC?Rp#  
package org.rut.util.algorithm.support; u|KjoO   
0 u*a=f=  
import org.rut.util.algorithm.SortUtil; +~n:*\  
H&-3`<  
/** W"=l@}I  
* @author treeroot MKbcJZe  
* @since 2006-2-2 H*]Vs=1  
* @version 1.0 A%#M#hD/  
*/ tR51Pw  
public class HeapSort implements SortUtil.Sort{ |!FQQ(1b  
>5O~SF.  
/* (non-Javadoc) G#[A'tbKk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3$hIc)  
*/ 6UCF w>  
public void sort(int[] data) { zS:2?VXxq  
MaxHeap h=new MaxHeap(); 4?Y7. :x  
h.init(data); :E}y Pcw  
for(int i=0;i h.remove(); pW+uVv,  
System.arraycopy(h.queue,1,data,0,data.length); 7V%P  
} rp\`uj*D  
et5lfj  
private static class MaxHeap{ |ufL s  
LqYyIbsvf  
void init(int[] data){ np2&W'C/i  
this.queue=new int[data.length+1]; '( I0VJJ   
for(int i=0;i queue[++size]=data; Cu`  
fixUp(size); XQ~Xls%]   
} ,>aa2  
} {9(0s| pr  
R'sNMWM  
private int size=0; "BsK' yo.  
UYxn? W.g  
private int[] queue; IP/%=m)\%  
HW]?%9a  
public int get() { ~AjPa}@ f  
return queue[1]; s,r|p@^  
} i&m_G5u88  
N!c FUZ5]  
public void remove() { O? g;Ny  
SortUtil.swap(queue,1,size--); |Uics:cQC  
fixDown(1); H.ZF~Yu w  
} : %& E58  
file://fixdown hZfj$|<  
private void fixDown(int k) { |&"aZ!Kn  
int j; O*v&C Hd3  
while ((j = k << 1) <= size) { FzEs1hpl  
if (j < size %26amp;%26amp; queue[j] j++; >3p~>;9sc  
if (queue[k]>queue[j]) file://不用交换 0Xb\w^  
break; 7f+@6jqD\)  
SortUtil.swap(queue,j,k); 8\68NG6o  
k = j; f2[R2sto@  
} s .p> ?U  
} PwW$=M{\.  
private void fixUp(int k) { ]+Lr'HF  
while (k > 1) { pMT7/y-  
int j = k >> 1; UhqTn$=fb  
if (queue[j]>queue[k]) 9;Z{++z  
break; {[#)Q.2  
SortUtil.swap(queue,j,k); B!pz0K*uG  
k = j; 9vP;i= fr  
} 0?$|F0U"J  
} 8OZasf  
*-PjcF}Y  
} 7zCJ3p  
RAl/p9\A+  
} lS9S7`  
l,lqhq\  
SortUtil: 5H.~pc2y  
D&F{0  
package org.rut.util.algorithm; EtzSaB*|  
{Vj&i.2,  
import org.rut.util.algorithm.support.BubbleSort; #M|lBYdW}  
import org.rut.util.algorithm.support.HeapSort; @Pk<3.S0  
import org.rut.util.algorithm.support.ImprovedMergeSort; xgMh@@e  
import org.rut.util.algorithm.support.ImprovedQuickSort; ymxA<bICS8  
import org.rut.util.algorithm.support.InsertSort; (9RfsV4^  
import org.rut.util.algorithm.support.MergeSort; ,2$<Pt;  
import org.rut.util.algorithm.support.QuickSort; ! DOyOTR&3  
import org.rut.util.algorithm.support.SelectionSort; jbipNgxkr  
import org.rut.util.algorithm.support.ShellSort; :=y5713  
1v|-+p42  
/** "7y, d%H  
* @author treeroot m|W17LhW{  
* @since 2006-2-2 BL 1KM2]  
* @version 1.0 W9]z]6  
*/ H2BRI d  
public class SortUtil { uKAI->"  
public final static int INSERT = 1; [TOo 9W  
public final static int BUBBLE = 2; %4m Nk}tyH  
public final static int SELECTION = 3; s4_Dqm  
public final static int SHELL = 4; z(LR!hr  
public final static int QUICK = 5; 9{OO'at?  
public final static int IMPROVED_QUICK = 6; 'wEQvCS  
public final static int MERGE = 7; ^'E^*R  
public final static int IMPROVED_MERGE = 8; Is4,QnY_[  
public final static int HEAP = 9; y@7fR9hp<  
A9b(P[!]T:  
public static void sort(int[] data) { ^+D/59I  
sort(data, IMPROVED_QUICK); nC p/.]Y*  
} ?d3K:|g  
private static String[] name={ +]cf/_8+s  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =F$?`q`  
}; :ZY%-]u7  
%urvX$r4K  
private static Sort[] impl=new Sort[]{ Rb:H3zh  
new InsertSort(), 5NZuaN  
new BubbleSort(), >[aR8J/U  
new SelectionSort(), 1<'z)r4  
new ShellSort(), )iw-l~y;  
new QuickSort(), kMCP .D45;  
new ImprovedQuickSort(), aC[G_ACwc  
new MergeSort(), Oq~{HJ{  
new ImprovedMergeSort(), y!gPBkG&3n  
new HeapSort() `[5xncZ-  
}; YCiG~y/~  
g@^y$wt  
public static String toString(int algorithm){ sPi  
return name[algorithm-1]; `15}jTi  
} >`UqS`YQK  
*fc8M(]&d  
public static void sort(int[] data, int algorithm) { }d}gb`Du  
impl[algorithm-1].sort(data); HSNj  
} Zzjx; SF  
8_!qoW@B  
public static interface Sort { Eh8GqFEM  
public void sort(int[] data); }&=l)\e  
} )1Bz0:  
$/"Ymm#"\Y  
public static void swap(int[] data, int i, int j) { TNqL ')f  
int temp = data; 2x<BU3  
data = data[j]; s U`#hL6;  
data[j] = temp; 0bh 6ay4  
} [8za=B/  
} 1R8tR#l  
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