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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。 B~TN/sd  
插入排序: ;h~er6&   
V1<`%=%_W  
package org.rut.util.algorithm.support; (C S8(C4[  
OM:v`<T!z  
import org.rut.util.algorithm.SortUtil; 3nFt1E   
/** EJm4xkYLj1  
* @author treeroot E4HU 'y~  
* @since 2006-2-2 &q>zR6jne  
* @version 1.0 Q$a  
*/ ^8K/xo-  
public class InsertSort implements SortUtil.Sort{ H+l,)Se  
B?6QMC;  
/* (non-Javadoc) iiNSDc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `.^ |]|u  
*/ : ejJV 6.  
public void sort(int[] data) { !>g:Si"  
int temp; ,X/-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +K{LQsR]  
} K)[8 H~Lm  
} G/{ ~_&t  
} NL!9U,h5|  
3~%!m<1:  
} -Mf Q&U   
z"379b7cN  
冒泡排序: T~k)uQ  
=u|~ <zQw  
package org.rut.util.algorithm.support; 9DE)S)e8  
$1 @,Qor  
import org.rut.util.algorithm.SortUtil; T bf:eVIG  
$j*Qo/x d  
/** Q"VMNvKYB  
* @author treeroot tcL2J.  
* @since 2006-2-2 :"'nK6>  
* @version 1.0 DWf$X1M  
*/ 0=![fjm  
public class BubbleSort implements SortUtil.Sort{ 8MZ$T3IM  
~<r i97)  
/* (non-Javadoc) g}Q x`65:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4~|<` vqN  
*/ x-_vl 9P)  
public void sort(int[] data) { cm@;*  
int temp; Vb)zZ^va+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ : F9|&q-W,  
if(data[j] SortUtil.swap(data,j,j-1); 6 bO;&  
} !'W-6f  
} jv&+<j`r  
} ~&g a1r2v?  
} urZ8j?}c  
)2.)3w1_4  
} '^}+Fv<O  
yV]xRaRr2  
选择排序: R$6qoqv{yG  
=r6qX  
package org.rut.util.algorithm.support; s<7XxQ  
%Fft R1"  
import org.rut.util.algorithm.SortUtil; w*~Tm>U  
[m2+9MMl  
/** o4Q3<T7nI  
* @author treeroot oH-8r:{  
* @since 2006-2-2 -=5)NH t  
* @version 1.0 +AI`R`Tm  
*/ 0I%: BT  
public class SelectionSort implements SortUtil.Sort { QK <\kVZ8  
]WL|~mG  
/* h-XY4gq/  
* (non-Javadoc) NFyMY#\]  
* >K:u ?YD[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '`l K'5;  
*/ &jf7k <^  
public void sort(int[] data) { )=_ycf^MC  
int temp; Y &f\VNlT  
for (int i = 0; i < data.length; i++) { 6|=j+rScv  
int lowIndex = i; ];FtS>\x  
for (int j = data.length - 1; j > i; j--) { %ROwr[Dj=  
if (data[j] < data[lowIndex]) { [Z<Z;=t  
lowIndex = j; |NMO__l@  
} [1( FgyE  
} dM]#WBOP y  
SortUtil.swap(data,i,lowIndex); O\Eqr?%L)  
} >K)2NLW\xA  
} sb.J bE8  
Eipp ~GD  
} "wM1qX  
DxSsg  
Shell排序: m 7 LUrU  
n-afDV  
package org.rut.util.algorithm.support; 4 I@p%g&  
,8VU&?`<}  
import org.rut.util.algorithm.SortUtil; a!,r46>$H  
oF|N O^H  
/** nWaNT-  
* @author treeroot gH7z  
* @since 2006-2-2 APSgnf  
* @version 1.0 b?VV'{4  
*/ H3O@9YU  
public class ShellSort implements SortUtil.Sort{ dULS^i@@  
q |dH~BK  
/* (non-Javadoc) .<&s%{EW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ' Q7Y-V  
*/ 8Y{s;U0n  
public void sort(int[] data) { kiUk4&1  
for(int i=data.length/2;i>2;i/=2){ pIO4,VL;W  
for(int j=0;j insertSort(data,j,i); r"wtZ]69  
} J;QUPpH Z  
} $G !R,eQ  
insertSort(data,0,1); I:=dG[\h2  
} sYn[uPefj  
Vxdp|  
/** q=5l4|1  
* @param data ?<%=: Yh  
* @param j +U8Bln  
* @param i V3sL;  
*/ zx%X~U   
private void insertSort(int[] data, int start, int inc) { Vfs $ VY2.  
int temp; !:0v{ZQ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); IVjU`ij  
} 7@;">`zvm  
} ^mPPyT,(  
} (03pJV&K  
8]"(!i_;)  
} r4{<Z3*N  
|g&ym Fc  
快速排序: [EZYsOr.  
%&+59vq   
package org.rut.util.algorithm.support; HuI`#.MpWE  
\8v91g91f  
import org.rut.util.algorithm.SortUtil; h*l&RR:i  
W!la-n  
/** 1mgLX_U9  
* @author treeroot hYg'2OG  
* @since 2006-2-2 kfrY1  
* @version 1.0 elO<a]hX  
*/ W>-B [5O&[  
public class QuickSort implements SortUtil.Sort{ 4na8  
x]4Kkpqm  
/* (non-Javadoc) Gi?_ujZR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !@L=;1,  
*/ p,!$/Q+l  
public void sort(int[] data) { {{{#?~3$7  
quickSort(data,0,data.length-1); R[Fn0fnLx  
} 9lzQ\}  
private void quickSort(int[] data,int i,int j){ q{' ~+Nq  
int pivotIndex=(i+j)/2; z@U} ~TvP  
file://swap M\oVA=d\0  
SortUtil.swap(data,pivotIndex,j); ?dq#e9  
?=On%bh  
int k=partition(data,i-1,j,data[j]); 4< S'  
SortUtil.swap(data,k,j); VLvS$0(}Z  
if((k-i)>1) quickSort(data,i,k-1); x\\7G^$<h  
if((j-k)>1) quickSort(data,k+1,j); +RDJY(Y$  
*dsX#Iz  
} /n{1o\  
/** `=)2<Ca;~@  
* @param data r@}bDkx  
* @param i xyeA  2Y  
* @param j >hsuAU.UOR  
* @return [~mGsXV  
*/ =JO^XwUOo  
private int partition(int[] data, int l, int r,int pivot) { Paf%rv2  
do{ |%7cdMC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `: |@Zln  
SortUtil.swap(data,l,r); -1%OlKC  
} Lxe^v/LsT  
while(l SortUtil.swap(data,l,r); ;sOsT?)7$  
return l; w4};q%OBj  
} 1,t)3;o$  
_M5%V>HO  
} YZwaD b  
J7$_VP  
改进后的快速排序: n! h7   
S-F o  
package org.rut.util.algorithm.support; 4Y ROB912  
<PD?f/4 /  
import org.rut.util.algorithm.SortUtil; WI[:-cv  
FY'dJY3O  
/** `N8 7 h"  
* @author treeroot 5 t{ja  
* @since 2006-2-2 MZ4c{@Tg  
* @version 1.0 .2:\:H~3  
*/ O1y|v[-BW  
public class ImprovedQuickSort implements SortUtil.Sort { xTV{^=\rS  
p .K*UP  
private static int MAX_STACK_SIZE=4096; *VeW?mY,P  
private static int THRESHOLD=10; <=um1P3X  
/* (non-Javadoc) "MOpsb,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eVz#7vqv   
*/ </~ 6f(mg  
public void sort(int[] data) { c0- ;VZ'  
int[] stack=new int[MAX_STACK_SIZE]; d IB }_L  
x~DLW1I  
int top=-1; C"V%# K  
int pivot; [3>GGX[Ic  
int pivotIndex,l,r; [0;buVU.  
6z,Dyy]tl  
stack[++top]=0; GF<[}  
stack[++top]=data.length-1; V2d,ksKwn  
m@G i6   
while(top>0){ <^R{U&Z@  
int j=stack[top--]; D{7w!z  
int i=stack[top--]; Qst$S}n  
oF:v JDSS  
pivotIndex=(i+j)/2; X]j)+DX>  
pivot=data[pivotIndex]; A#@_V'a8  
Nn6S 8kc  
SortUtil.swap(data,pivotIndex,j); $W8Cf[a  
YV'pVO'_+  
file://partition ~2 *9{  
l=i-1; p3951-D  
r=j; I[Ic$ta  
do{ .K8w8X/3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Sb&lhgW]c  
SortUtil.swap(data,l,r); ) ]6h y9<  
} ).412I  
while(l SortUtil.swap(data,l,r); )r6EW`$  
SortUtil.swap(data,l,j); oy.[+EI`|  
|CD"*[j]  
if((l-i)>THRESHOLD){ g}xQ6rd  
stack[++top]=i; _k66Mkd#b  
stack[++top]=l-1; s4LO&STh{  
} rxZi8w>}  
if((j-l)>THRESHOLD){ qv2!grp]*W  
stack[++top]=l+1; R[[ ,q:4  
stack[++top]=j; m]Y;c_DO:  
} M!m?#xz'c  
t;qP']2  
} U]6&b  
file://new InsertSort().sort(data); zd %rs~*c  
insertSort(data); P.\nLE J=  
} e79KbLV  
/** LO%!Z,}   
* @param data ^z;JVrW  
*/ Jl<ns,Zg  
private void insertSort(int[] data) { lHfe<j]  
int temp; i\?*=\a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eTa y>G  
} ,T{<vRj7_  
} ^c}J,tZ]  
} -%c<IX>z9  
6cS>bl  
} X* eW#|$\  
w|Cx>8P8@  
归并排序: "?}uQ5f  
K!z`  
package org.rut.util.algorithm.support; kQ>^->w  
]c)_&{:V  
import org.rut.util.algorithm.SortUtil; MHj,<|8Q  
|pZUlQbb  
/** m"2d$vro"  
* @author treeroot (K..k-o`.  
* @since 2006-2-2 E)N<lh  
* @version 1.0 8AFczeg[[  
*/ 3)Ac"nuyqH  
public class MergeSort implements SortUtil.Sort{ O~Wt600{E  
s Kicn5  
/* (non-Javadoc) T Eu'*>g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /1w2ehE<  
*/ :\ QUs}  
public void sort(int[] data) { 1QqHF$S  
int[] temp=new int[data.length]; cW8\d  
mergeSort(data,temp,0,data.length-1); F'm(8/A$  
} i{c@S:&@^  
95W?{> @  
private void mergeSort(int[] data,int[] temp,int l,int r){ h11.'Eej`  
int mid=(l+r)/2; %b2oiKSBx?  
if(l==r) return ; r{?Ta iK  
mergeSort(data,temp,l,mid); ? zDa=7 J  
mergeSort(data,temp,mid+1,r); !]` #JAL7  
for(int i=l;i<=r;i++){ <PN"oa#  
temp=data; zy'D!db`Z  
} 9nSWE W  
int i1=l; wBk@F5\<  
int i2=mid+1; 0ZpFE&  
for(int cur=l;cur<=r;cur++){ Ddju~510  
if(i1==mid+1) 25y6a|`  
data[cur]=temp[i2++]; Ucw yxX I  
else if(i2>r) _Xcn N:Rt  
data[cur]=temp[i1++]; `YBkF  
else if(temp[i1] data[cur]=temp[i1++]; Y4.Eq+$gh  
else GwU?wIIj^  
data[cur]=temp[i2++]; e$)300 o  
} 6X2PYJJZ  
} uGU; Y'W)  
* *H&+T/B  
} $:s`4N^  
} R4c  
改进后的归并排序: cE'L% Z  
y3u+_KY-  
package org.rut.util.algorithm.support; 0U/,aHvhP  
B@YyQ'  
import org.rut.util.algorithm.SortUtil; #K\?E.9h  
!9iGg*0dx  
/** 58xnB!h\}  
* @author treeroot %(/!ljh_  
* @since 2006-2-2 VZn=rw  
* @version 1.0 7%?jL9Vw  
*/ _,74)l1  
public class ImprovedMergeSort implements SortUtil.Sort { yF._*9Q3hK  
FyoEQ%.bI  
private static final int THRESHOLD = 10; oEz%={f  
BG&cQr  
/* `?(Bt|<>  
* (non-Javadoc) {:nQl}  
* ,|?CU r9Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]q5`YB%_  
*/ 3uu~p!2  
public void sort(int[] data) { <bck~E  
int[] temp=new int[data.length]; &QX`NO 6  
mergeSort(data,temp,0,data.length-1); e?0q9W  
} Z(>'0]G  
#:x4DvDkR  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2aA`f7  
int i, j, k; Uggw-sRU  
int mid = (l + r) / 2; ~tFqb<n  
if (l == r) <|Yj%f  
return; qZEoiNH(Tj  
if ((mid - l) >= THRESHOLD) %6%<?jZ  
mergeSort(data, temp, l, mid); W/ay.I  
else Z=5qX2fy1*  
insertSort(data, l, mid - l + 1); m(iR|Zx  
if ((r - mid) > THRESHOLD) 4M&`$Wim  
mergeSort(data, temp, mid + 1, r); qGmNz}4D5  
else X.F^$  
insertSort(data, mid + 1, r - mid); g.JN_t5  
x"P);su  
for (i = l; i <= mid; i++) { <N,)G |&  
temp = data; /Ss7"*JLe  
} %h"z0@+  
for (j = 1; j <= r - mid; j++) { d'6|:z9c  
temp[r - j + 1] = data[j + mid]; w@\vHH.;V  
} (UCK;k  
int a = temp[l]; Q cjc ,  
int b = temp[r]; x3ERCqTR  
for (i = l, j = r, k = l; k <= r; k++) { 5l-mW0,MK  
if (a < b) { YT/kC'A  
data[k] = temp[i++]; PYRd] %X  
a = temp; ^I6^g  
} else { zjL.Bhiud  
data[k] = temp[j--]; ^ &/G|  
b = temp[j]; jDM w2#<  
} spofLu.  
} ;{[>&4  
} ~9\WFF/  
\qvaE+  
/** u}bf-;R  
* @param data ow=UtA-^O  
* @param l Si 9Z>MR  
* @param i Q^K"8 ;  
*/ ]{~NO{0@Y  
private void insertSort(int[] data, int start, int len) { [[~w0G~1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P|2E2=G  
} %Pqk63QF  
} j;_c+w!P  
} Q zZ;Ob]'  
} Z4$cyL'$P  
[ =x s4=  
堆排序: Rv,JU6>i  
I V%VU  
package org.rut.util.algorithm.support; )Rat0$6  
8n BL\{'B[  
import org.rut.util.algorithm.SortUtil; Ioy  
4Tc&IwR  
/** Zc |/{$>:W  
* @author treeroot CBQhIvq.d  
* @since 2006-2-2 SQ,?N XZ  
* @version 1.0 <!$:8ls  
*/ (KZHX5T=  
public class HeapSort implements SortUtil.Sort{ dm "n%  
[a o U5;7  
/* (non-Javadoc)  O|A_PyW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;R=.iOn  
*/ LLWB  
public void sort(int[] data) { AB Xl  
MaxHeap h=new MaxHeap(); x6afI<dm  
h.init(data); UX<Qcjm$e  
for(int i=0;i h.remove(); +bK.NcS  
System.arraycopy(h.queue,1,data,0,data.length); ^ 5VK>  
} GhY1k";  
qrvsjYi*w  
private static class MaxHeap{ 'Djm0  
*tOG*hwdT  
void init(int[] data){ GT hL/M  
this.queue=new int[data.length+1]; /:6Wzj  
for(int i=0;i queue[++size]=data; C.^Ven  
fixUp(size); +t4BQf  
} {k.MS-q  
} iz(u=/*\  
0yx3OY  
private int size=0; N!Qg;(  
WD;Y~|  
private int[] queue; z|7zj/+g  
~m1P_`T  
public int get() { b96%")  
return queue[1]; B()/.w?A  
} fW`&'!  
kY,U8a3!  
public void remove() { 1CPjil*eb  
SortUtil.swap(queue,1,size--); DcMJ^=r8O:  
fixDown(1); vB37M@wm  
} G1t\Q-|l0  
file://fixdown p_ Fy >j  
private void fixDown(int k) { ]Q "p\@\!  
int j; )2UZ% ?V#  
while ((j = k << 1) <= size) { IvpcSam'  
if (j < size %26amp;%26amp; queue[j] j++; %;D+k  
if (queue[k]>queue[j]) file://不用交换 k *R<,  
break; 4ww]9J  
SortUtil.swap(queue,j,k); )5%C3/Dl!  
k = j; 6*l^1;U  
} cH<q:OYi  
} VKm!Ri$  
private void fixUp(int k) { FVv8--  
while (k > 1) { 4$/i%B#ad  
int j = k >> 1; ~.PO[hC  
if (queue[j]>queue[k]) 2M)]!lYy  
break; H$ftGwS8  
SortUtil.swap(queue,j,k); [ rNXQ` /  
k = j; wdzOFDA  
} k{tMzx]F__  
} I9o6k?$K  
bW#@OrsS  
} wiOgyMdx  
4RKW  
} PUQES(&  
4GG>!@|  
SortUtil: C=uZ1xg*,  
_4 6X%k  
package org.rut.util.algorithm; 2;L|y._`w  
!$A37j6  
import org.rut.util.algorithm.support.BubbleSort; m`4R]L]  
import org.rut.util.algorithm.support.HeapSort; 'B83m#HR#  
import org.rut.util.algorithm.support.ImprovedMergeSort; @ P@c.*}s  
import org.rut.util.algorithm.support.ImprovedQuickSort; %pu Lr'Y  
import org.rut.util.algorithm.support.InsertSort; #tt?!\8C  
import org.rut.util.algorithm.support.MergeSort; \ JG8KE=j  
import org.rut.util.algorithm.support.QuickSort; <";,GaZQ  
import org.rut.util.algorithm.support.SelectionSort; t3Z_Dp~\  
import org.rut.util.algorithm.support.ShellSort; uUE9g  
UV}73Sp  
/** 5ep/h5*/  
* @author treeroot g u)=wu0  
* @since 2006-2-2 }],Z;:  
* @version 1.0 WqxUXH  
*/ *BD=O@  
public class SortUtil { 1\RGM<q$f  
public final static int INSERT = 1; M:Er_,E  
public final static int BUBBLE = 2; |W$DVRA  
public final static int SELECTION = 3; l5Y/Ok0,  
public final static int SHELL = 4; nfb]VN~(  
public final static int QUICK = 5; It_M@  
public final static int IMPROVED_QUICK = 6; @=w<B4 L  
public final static int MERGE = 7; `=#01YX[0  
public final static int IMPROVED_MERGE = 8; a m-b!l!q^  
public final static int HEAP = 9; 53QfTP  
]U[X1W+@  
public static void sort(int[] data) { JJV0R}z?TV  
sort(data, IMPROVED_QUICK); o sbHs$C  
} bf_I9Z3m  
private static String[] name={ NRnRMY-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0U66y6  
}; )PkNWj6%y  
Xf =XBoN|  
private static Sort[] impl=new Sort[]{ H-rWDN#  
new InsertSort(), |6J ?8y  
new BubbleSort(), 4@ILw  
new SelectionSort(), |{g+Y  
new ShellSort(), #5sD{:f`  
new QuickSort(), bLz*A-  
new ImprovedQuickSort(), kH*Pn'  
new MergeSort(), 3`hUo5K  
new ImprovedMergeSort(), >idBS  
new HeapSort() ezhDcI_T  
}; [MX;,%;;  
?!w^`D0}o  
public static String toString(int algorithm){ 6nDV1O5  
return name[algorithm-1]; L+B?~_*  
} OYM@szM  
=9L$L|W  
public static void sort(int[] data, int algorithm) { Uu6L~iB  
impl[algorithm-1].sort(data); CZ 2`H[8  
} M"q[p  
"%WgT2)m.  
public static interface Sort { 0)YbI!  
public void sort(int[] data); Nd:R" p*8  
} \u`)kJ5o1  
: Ud[f`t  
public static void swap(int[] data, int i, int j) { ]u-SL md  
int temp = data; :&}odx!-!C  
data = data[j]; ci,+Bjc  
data[j] = temp; fkfZ>D^1  
} ?wMHS4  
} K*K1(_x=  
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