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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。 5I#L|+  
插入排序: "4W@p'  
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package org.rut.util.algorithm.support; cYBv}ylw}R  
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import org.rut.util.algorithm.SortUtil; C.SG m  
/** MUo}Qi0K  
* @author treeroot  Fa  
* @since 2006-2-2 W i a%rm  
* @version 1.0 `-)!4oJ]  
*/ l2>ka~  
public class InsertSort implements SortUtil.Sort{ Y\e,#y  
fiDwa ;,  
/* (non-Javadoc) S *3N6*-l"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B>kx$_~  
*/ R"Ol'y{  
public void sort(int[] data) { r;3{%S._  
int temp; h-0sDt pR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <]f ru1  
} 1~! 4  
} nAc02lJh|  
} LKtug>Me  
h rfu\cI  
} QR'yZ45n4  
Y02 cX@K6  
冒泡排序: ]y*AA58;  
aAHx^X^  
package org.rut.util.algorithm.support; Q;p?.GI?-  
HKA7|z9{  
import org.rut.util.algorithm.SortUtil; YGp8./ma<I  
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/** j{)_&|^{  
* @author treeroot c_#\'yeW  
* @since 2006-2-2 O*MC"%T  
* @version 1.0 R~40,$e{  
*/ ImJ2tz6  
public class BubbleSort implements SortUtil.Sort{ g'G"`)~ 2  
ByR%2_6&  
/* (non-Javadoc) 7P}&<;5zD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \!HG kmd  
*/ KiXXlaOs  
public void sort(int[] data) { vby[# S|  
int temp; H38ODWO3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ mjdZ^  
if(data[j] SortUtil.swap(data,j,j-1); '1?b?nVo  
} ]IQTf5n  
} d! 0p^!3  
} xL,;(F\^  
} V+7x_>!&)  
3nVdws  
} -)%l{@Mr  
Gv,_;?7lD  
选择排序: m'h`%0Tc  
NFT&\6!o  
package org.rut.util.algorithm.support; T/NeoU3 p  
`usX(snY  
import org.rut.util.algorithm.SortUtil; Y*-#yG9  
JTuU}nm+  
/** Z1j3F  
* @author treeroot hr9[$4'H  
* @since 2006-2-2 +o]DT7W  
* @version 1.0 8^26g 3  
*/ N%Gb  
public class SelectionSort implements SortUtil.Sort { 2y6 e]D  
U_ j\UQC  
/* 0zD[mt  
* (non-Javadoc) m,i@  
* P !:LAb(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [R$iX  
*/ eh=.Q<N  
public void sort(int[] data) { i v7^ !  
int temp; Y%AVC9(  
for (int i = 0; i < data.length; i++) { <d".v  
int lowIndex = i; Gh3b*O_,  
for (int j = data.length - 1; j > i; j--) { GAK!qLy9  
if (data[j] < data[lowIndex]) { 9VyY [&  
lowIndex = j; {DzOXTI[Y  
} dQSX&.<c,  
} cE3g7(a  
SortUtil.swap(data,i,lowIndex); r(g:b ^S  
} e nsou!l  
} qx,>j4y w  
Ae,P&(  
} 5U[m]W=B  
XcfvmlBoD-  
Shell排序: Z_iVOctP  
1D3{\v  
package org.rut.util.algorithm.support; X?PcEAi;w  
[I*zZ`  
import org.rut.util.algorithm.SortUtil; l] -mdq/C  
UVND1XV^f  
/** d|T87K>|r"  
* @author treeroot fO6i  
* @since 2006-2-2 %Z T@&  
* @version 1.0 Aj9<4N  
*/ #^|"dIZ_M  
public class ShellSort implements SortUtil.Sort{ 5Q $6~\  
;- ~}g7$  
/* (non-Javadoc) zQpF, N<b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qX,T X 3  
*/ KmUH([#  
public void sort(int[] data) { {<f |h)r  
for(int i=data.length/2;i>2;i/=2){ kkvG=  
for(int j=0;j insertSort(data,j,i); /r Q4JoR>  
} "n,? )  
} ,E YB E  
insertSort(data,0,1); o5k7$0:t/  
} VZ69s{/.B  
.(D,CGtYb  
/** h!>K[*  
* @param data ((Jiv=%  
* @param j 6S`J7[  
* @param i WoYXXYP/E  
*/ #* KmPc+  
private void insertSort(int[] data, int start, int inc) { h5+L/8+J^z  
int temp; 5Vq&w`sW  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `dp]N0nz  
} w-2?|XvDmf  
} 57nSyd] PR  
} 5;:P^[cH9  
NG)Xk[q4  
} {Z~5#<t  
Ms * `w5n  
快速排序: qj$6/V|D  
k|kn#X3X  
package org.rut.util.algorithm.support; JZc"4qf@OT  
 ,m"0Bu2  
import org.rut.util.algorithm.SortUtil; cV|u]ce%1  
XkGS3EY  
/** G\\0N^v  
* @author treeroot 948lL&  
* @since 2006-2-2 .66_g@1  
* @version 1.0 z8 n=\xL  
*/ |mHxkd  
public class QuickSort implements SortUtil.Sort{ @_:Jm tH<  
DrY5Q&S  
/* (non-Javadoc) B'@a36  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *F_ dP  
*/ I4Y; 9Gg  
public void sort(int[] data) { 1G6 %?Iph  
quickSort(data,0,data.length-1); udld[f.  
} 5:T)hoF@  
private void quickSort(int[] data,int i,int j){ .#BWu(EYV  
int pivotIndex=(i+j)/2; < .\2 Ec  
file://swap 2A,iY}R  
SortUtil.swap(data,pivotIndex,j); :)PAj  
jdEqa$CXG  
int k=partition(data,i-1,j,data[j]); cD!y d^QE  
SortUtil.swap(data,k,j); "&@v[O)!xu  
if((k-i)>1) quickSort(data,i,k-1); 0r|mg::'  
if((j-k)>1) quickSort(data,k+1,j); L)mb.U$`c|  
2)W~7GED  
} $@ R[$/  
/** E\GD hfTQ  
* @param data /&T"w,D  
* @param i 3%J7_e'  
* @param j Z: e|~#  
* @return  '7j!B1K-  
*/ DjK  
private int partition(int[] data, int l, int r,int pivot) { u#>*"4Q  
do{ 5Vj t!%?r  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fN h0?/3)  
SortUtil.swap(data,l,r); YtWO=+rX  
} \i}:Vb(^  
while(l SortUtil.swap(data,l,r); [=otgVteN"  
return l; |Nfi y  
} U`-]U2 "  
qFpRY7eq  
} jQ 'r};;  
>U2[]fu  
改进后的快速排序: :VB{@ED  
5|pPzEA>  
package org.rut.util.algorithm.support; U> @st="  
dh; L!  
import org.rut.util.algorithm.SortUtil; 7YLG<G!v)]  
XoO#{7a  
/** :v(fgS2\  
* @author treeroot <,Z6=M`  
* @since 2006-2-2 W  :qQ  
* @version 1.0 P_:~!+W,  
*/ Kj+=?R~}S  
public class ImprovedQuickSort implements SortUtil.Sort { ~$@~X*K~  
SD=kpf;  
private static int MAX_STACK_SIZE=4096; FkS$x'~2$  
private static int THRESHOLD=10; 7: cmBkXm  
/* (non-Javadoc) W-ctx"9DS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }CoR$K   
*/ lJR  
public void sort(int[] data) { 10C,\  
int[] stack=new int[MAX_STACK_SIZE]; Go8?8*  
;@&mR <5j  
int top=-1; ^#Ruw?D  
int pivot; OZ'=Xtbn  
int pivotIndex,l,r; '%} k"&t$i  
9|}u"jJB%E  
stack[++top]=0; i- v PJg1  
stack[++top]=data.length-1; {okx*]PIc  
M y vyp  
while(top>0){ d8o<Q 9   
int j=stack[top--]; Rb8wq.LqD  
int i=stack[top--]; ?df*Y5I2  
YKk*QcAn  
pivotIndex=(i+j)/2; x'c%w:  
pivot=data[pivotIndex]; u3Qm"?$`  
ST *\Q  
SortUtil.swap(data,pivotIndex,j); +5>*$L%8T`  
h yPVt6Gkj  
file://partition 7tEkQZMDI  
l=i-1; @5i m*ubzM  
r=j; VXM5 B  
do{ +;ILj<!Z7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R'#1|eWCa  
SortUtil.swap(data,l,r); ^>3q@,C]c  
} 3kc.U  
while(l SortUtil.swap(data,l,r); Uzx,aYo X  
SortUtil.swap(data,l,j); 5Q9nJC{'NN  
N3Yf3rK  
if((l-i)>THRESHOLD){ p,)~w1|  
stack[++top]=i; {Y\W&Edw%  
stack[++top]=l-1; \9Z1'W  
} e)#O-y  
if((j-l)>THRESHOLD){ vzr?#FG  
stack[++top]=l+1; u@"nVHgMJ  
stack[++top]=j; Q|gRBu  
} L355uaj  
uVQH,NA,  
} $CXMeY{tOo  
file://new InsertSort().sort(data); s5 P~feg  
insertSort(data); }u>F}mUa  
} T&ECGF;Y/  
/** tJ_6dH8Y  
* @param data vjzpU(Sq#  
*/ r&MHww1i  
private void insertSort(int[] data) { aLWNqe&1  
int temp; +i@r-OL   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ub(8ko:8$  
} GW29Rj1  
} 5Dhpcgq<<  
} } ^}fx [  
X:un4B}O  
} aT]G&bR?  
sp2"c"_+  
归并排序: o `]o(OP  
:c vZk|b%  
package org.rut.util.algorithm.support; FRSz3^Aw  
Zgw;AY.R>  
import org.rut.util.algorithm.SortUtil; wa #$9p~Q  
Q?Y\WD  
/** &yQilyU{V  
* @author treeroot 5Oa`1?C1  
* @since 2006-2-2 zm& D #)  
* @version 1.0 WeqE 9@V  
*/ uA'S8b%C  
public class MergeSort implements SortUtil.Sort{ R>r@I_  
Y`O"+Jr  
/* (non-Javadoc) ir72fSe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ')bas#=uP  
*/ ^-*q  
public void sort(int[] data) { ]YO &_#  
int[] temp=new int[data.length]; M_:_(y>l  
mergeSort(data,temp,0,data.length-1); *FINNNARB  
} Eeumi#$Z   
?$ft3p}  
private void mergeSort(int[] data,int[] temp,int l,int r){ sQ)D.9\~  
int mid=(l+r)/2; aB=&XGV9  
if(l==r) return ; ^AI5SjOUx  
mergeSort(data,temp,l,mid); yFD3:;}  
mergeSort(data,temp,mid+1,r); JlM0]__v  
for(int i=l;i<=r;i++){ (O&R-5m  
temp=data; Wk0"U V  
} YqJ `eLu  
int i1=l; PNSV?RT*pG  
int i2=mid+1; h^H~q<R[T  
for(int cur=l;cur<=r;cur++){ dGNg[  
if(i1==mid+1) a/ k0(  
data[cur]=temp[i2++]; EAdr}io  
else if(i2>r) *_qW;l7  
data[cur]=temp[i1++]; ||}k99y +  
else if(temp[i1] data[cur]=temp[i1++]; K5h2 ~  
else 75^U<Hz-3{  
data[cur]=temp[i2++]; !xIK<H{*  
} ']x`d  
} rryC^Vma  
ytWTJ>L  
} nx2iEXsa  
Bb~Q]V=x;  
改进后的归并排序: dr54 D  
kn^? .^dVX  
package org.rut.util.algorithm.support; "f1`6cx6  
$*KM%M6  
import org.rut.util.algorithm.SortUtil; THOXs; k0  
t&oNC6  
/** )zKZ<;#y  
* @author treeroot pZ IDGy=~  
* @since 2006-2-2 BDO]-y  
* @version 1.0 .8v[ss6:  
*/ #77p>zhY  
public class ImprovedMergeSort implements SortUtil.Sort { &>YdX$8x  
%VSjMZ  
private static final int THRESHOLD = 10; Y*KP1=Md  
L] syD n  
/* Z ZMz0^V  
* (non-Javadoc) *!wBn  
* ]46-TuH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4D4Y.g_x  
*/ pO10L`|  
public void sort(int[] data) { vhEXtjL  
int[] temp=new int[data.length]; 4)DI0b"  
mergeSort(data,temp,0,data.length-1); J/{!_M-  
} l)d(N7HME  
"UVqHW1%K  
private void mergeSort(int[] data, int[] temp, int l, int r) { zG|#__=T  
int i, j, k; 0&W*U{0F\  
int mid = (l + r) / 2; 3lw8%QD>  
if (l == r) hk7kg/"  
return; }[2|86,G;  
if ((mid - l) >= THRESHOLD) 9[9 ZI1*s  
mergeSort(data, temp, l, mid); &y~~Z [.F,  
else m0 a<~  
insertSort(data, l, mid - l + 1); "fq8)  
if ((r - mid) > THRESHOLD) 4Gsbcl{  
mergeSort(data, temp, mid + 1, r); <jk.9$\$A  
else +J+[fbqX  
insertSort(data, mid + 1, r - mid); f-'$tMs  
jW< aAd  
for (i = l; i <= mid; i++) { >~vZ+YO  
temp = data; ~t,-y*=  
} t#eTn";  
for (j = 1; j <= r - mid; j++) { 8#_"WzDw  
temp[r - j + 1] = data[j + mid]; 8YLS/dN0 w  
} jWX^h^n7K  
int a = temp[l]; Cr;d !=  
int b = temp[r]; q]}1/JZS  
for (i = l, j = r, k = l; k <= r; k++) { J=OWXL!<a  
if (a < b) { b~L8m4L  
data[k] = temp[i++]; mKh <M)Bz  
a = temp; b- FJMY  
} else { ]ICBNJ  
data[k] = temp[j--]; HEMq4v4  
b = temp[j]; )`V__^  
} G#(+p|n  
} Ozo)}  
} $(PWN6{\r^  
[-pB}1Dxb  
/** Ze:Y"49S+>  
* @param data `JrvD  
* @param l i(pevu  
* @param i ~p'DPg4  
*/ Z7@~#)3  
private void insertSort(int[] data, int start, int len) { /EXub U73  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); puPYM"  
} 9>1 $Jv3  
} [ ]LiL;A&  
} tc%0yr9  
} p#T^o]+  
UN"U#Si)  
堆排序: h4 X>  
`;OEdeAM  
package org.rut.util.algorithm.support; GSh~j-C'  
% w0Vf$  
import org.rut.util.algorithm.SortUtil; |!=KLJUA  
G'\x9%  
/** oO 8opS7F  
* @author treeroot W2CQk  
* @since 2006-2-2 RgQ;fYS  
* @version 1.0 wzka4J{  
*/ a!?&8$^<  
public class HeapSort implements SortUtil.Sort{ $kM8E@x2  
Nsd7?|@HI  
/* (non-Javadoc) 8pQ:B/3=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VSJ08Ngi   
*/ wV,l }Xb-  
public void sort(int[] data) { Fm3f/]>k#_  
MaxHeap h=new MaxHeap(); g^qbd$}  
h.init(data); YhzDi>hob  
for(int i=0;i h.remove(); OlV'#D   
System.arraycopy(h.queue,1,data,0,data.length); Wxxnc#;lv  
} F|seBBu  
ny,a5zEnF  
private static class MaxHeap{ 2\: z   
O [81nlhS0  
void init(int[] data){ BW61WH?  
this.queue=new int[data.length+1]; :<}.3Q?&  
for(int i=0;i queue[++size]=data; )^ky @V  
fixUp(size); @fVCGV?'  
} 3V"y|q  
} ~D9VjXfL)  
5>e3srKu  
private int size=0; VgSk\:t  
>;;tX3(  
private int[] queue; SuHv{u45  
;AwQpq>dy  
public int get() { njk1x  
return queue[1]; N!`8-ap\^  
} cVR3_e{&H  
PUdJ>U  
public void remove() { 8-wW?YTG  
SortUtil.swap(queue,1,size--); ^lP_{ c  
fixDown(1); &d`z|Gx9  
} g8_C|lVZi  
file://fixdown DM-8azq $  
private void fixDown(int k) { E/MNz}+  
int j; .o2]ndT/J  
while ((j = k << 1) <= size) { 8%$Vj  
if (j < size %26amp;%26amp; queue[j] j++; H9["ZRL,Q  
if (queue[k]>queue[j]) file://不用交换 C(7Y5\"P  
break; w :w  
SortUtil.swap(queue,j,k); M =!RJ%6f  
k = j; buXPeIo^VM  
} }^Unx W  
} Zm:Wig ,a  
private void fixUp(int k) { K$H>/*&'~  
while (k > 1) { ',Mi D=_  
int j = k >> 1; {ZS-]|Kx  
if (queue[j]>queue[k]) [Z5Lgg&  
break; pX:FXzYQ  
SortUtil.swap(queue,j,k); R?Dbv'lp>  
k = j; PC| U]  
} ; )Vro  
} 4DVkycM  
*aXZONym  
} _l&`* 2d  
D<rO:Er?*a  
} D&{ 7Av  
IX7|_ci  
SortUtil: qIwI]ub~  
o b  
package org.rut.util.algorithm; {(7D=\eU  
^N!l$&=  
import org.rut.util.algorithm.support.BubbleSort; yqF$J"=|  
import org.rut.util.algorithm.support.HeapSort; G\\zk  
import org.rut.util.algorithm.support.ImprovedMergeSort; e!wS"[,  
import org.rut.util.algorithm.support.ImprovedQuickSort; `  L(AvSR  
import org.rut.util.algorithm.support.InsertSort; g8yWFqE!T  
import org.rut.util.algorithm.support.MergeSort; B)F2SK<@  
import org.rut.util.algorithm.support.QuickSort; $X %GzrN  
import org.rut.util.algorithm.support.SelectionSort; 2&E1)^  
import org.rut.util.algorithm.support.ShellSort; 1NO<K`  
A# W%ud4  
/** GNXQD}L?b?  
* @author treeroot rl^_RI  
* @since 2006-2-2 \ A\a=A[  
* @version 1.0 =nEl m*E  
*/ (Al.hEs'  
public class SortUtil { P5ii3a?R  
public final static int INSERT = 1; VVdgNT|}W  
public final static int BUBBLE = 2; )-824?Nl:  
public final static int SELECTION = 3; ,CguY/y  
public final static int SHELL = 4; rN)T xH&*p  
public final static int QUICK = 5; Bv $;yR  
public final static int IMPROVED_QUICK = 6; w$H=GF?"  
public final static int MERGE = 7; 22L#\qVkl  
public final static int IMPROVED_MERGE = 8; jxL5L[  
public final static int HEAP = 9;  Hw34wQX  
i=%wZHc;  
public static void sort(int[] data) { CTt3W>'=+  
sort(data, IMPROVED_QUICK); 1Y410-.3w{  
} / sENoQR  
private static String[] name={ ^3QHB1I  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v709#/ cR  
}; lhAwTOn`Q  
4J2NIFZ  
private static Sort[] impl=new Sort[]{ GLA,,i'i9  
new InsertSort(), @B$ Y`eK\  
new BubbleSort(), |jW82L+!N%  
new SelectionSort(), $%VFk53I  
new ShellSort(), h2+vl@X  
new QuickSort(), e9h T  
new ImprovedQuickSort(), E9 {Gaa/{  
new MergeSort(), \$s<G|<P  
new ImprovedMergeSort(), @* L^Jgn  
new HeapSort() )cB00*/  
}; |sHIT<=m  
nH*U  
public static String toString(int algorithm){ xfqgK D>  
return name[algorithm-1]; gOa'o<  
} 0 8vA;6zt  
=35^k-VS  
public static void sort(int[] data, int algorithm) { F<X)eO]tk  
impl[algorithm-1].sort(data); !l@IG C  
} G@h6>O  
qev1bBW  
public static interface Sort { q~.\NKc  
public void sort(int[] data); |)i- c`x  
} ? )-*&1cv  
Afo(! v  
public static void swap(int[] data, int i, int j) { ~!j1</$_  
int temp = data; 0)-l9V  
data = data[j]; ]q7\  
data[j] = temp; e{.2*>pH  
} !)ey~Suh  
} $zbm!._~DA  
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