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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。 +T]D\];D  
插入排序: rIWQD%Afm  
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package org.rut.util.algorithm.support; 5g;i{T/6~x  
|]x>|Z?/u  
import org.rut.util.algorithm.SortUtil; </jTWc'}  
/** J0 x)NnWJ  
* @author treeroot Meo. V|1  
* @since 2006-2-2 /~;om\7r  
* @version 1.0 D1 f}g  
*/ w|8T6W|w  
public class InsertSort implements SortUtil.Sort{ ORo,.#<  
- 1tiy.^$F  
/* (non-Javadoc) L+2<J,   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ex$i8fO(  
*/ o) ,1R:  
public void sort(int[] data) { $~<]G)*Z  
int temp; '/QS sZR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hn!13+fS  
} K0] 42K  
} Q}:#H z?U  
} 5? 1:RE(1  
&`Ek-b!7  
} =^`?O* /;  
^ah9:}Ll  
冒泡排序: ) i=.x+Q  
f#b;s<G  
package org.rut.util.algorithm.support; ])NQzgS  
aLt2fB1)  
import org.rut.util.algorithm.SortUtil; 4 oZm0  
MI\35~JAN  
/** {#4F}@Q  
* @author treeroot BDz 7$k]  
* @since 2006-2-2 x3Ze\N8w  
* @version 1.0 &-hXk!A  
*/ ^K'@W  
public class BubbleSort implements SortUtil.Sort{ yw+LT,AQ.  
)>U7+ Me  
/* (non-Javadoc) Q?]-/v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E8] kd  
*/ k?;B1D8-n  
public void sort(int[] data) { j NkobJ1  
int temp; YzVhNJWpw  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ![j?/376  
if(data[j] SortUtil.swap(data,j,j-1); IcP\#zhEv  
} &*8_w-  
} 6#(==}Sm+  
} V(3=j)#  
} o3=pxU*  
~"nF$DB  
} 6-J%Z%yT #  
6g&Ev'  
选择排序: u@pimRVo  
g}n-H4LI  
package org.rut.util.algorithm.support; db`L0JB  
XsbYWJdds  
import org.rut.util.algorithm.SortUtil; `A ^  
:.aMhyh#*  
/** \2!1fN  
* @author treeroot ;Bwg'ThT  
* @since 2006-2-2 JK'FJ}Z4  
* @version 1.0 cogIkB&Ju  
*/ ,u_ Z0S M  
public class SelectionSort implements SortUtil.Sort { u.dYDi  
< wi9   
/* m6Mko2  
* (non-Javadoc) ;9$71E  
* @jY=b<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h'ik19  
*/ ;7E c'nC4  
public void sort(int[] data) { 2xK v;  
int temp; <sli!rv  
for (int i = 0; i < data.length; i++) { F(KsB5OY?  
int lowIndex = i; h yK&)y?~  
for (int j = data.length - 1; j > i; j--) { f@Yo]FU  
if (data[j] < data[lowIndex]) { ,9Si 3vn  
lowIndex = j; D1R$s*{  
} _9:r4|S  
} 2mEvoWnJ  
SortUtil.swap(data,i,lowIndex); "."ow|  
} |wINb~trz  
} xtO#reL"q?  
}\0ei(%H  
} ~sT1J|  
{2F@OfuCF  
Shell排序: B;e (5y-  
LY;Fjb yU  
package org.rut.util.algorithm.support; y4)iL?!J~  
M>[e1y>7  
import org.rut.util.algorithm.SortUtil; Hg5 :>?Lw@  
+h08uo5c  
/** nM| Cv  
* @author treeroot E.N  
* @since 2006-2-2 #f<3[BLx  
* @version 1.0 S`8Iu[Ma  
*/ Z5|BwM  
public class ShellSort implements SortUtil.Sort{ );;UA6CD  
.F},Z[a&  
/* (non-Javadoc) T/]f5/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z7XFG&@6  
*/ T.}Y&,n$$5  
public void sort(int[] data) { @ Fkhida  
for(int i=data.length/2;i>2;i/=2){ s@IgaF {  
for(int j=0;j insertSort(data,j,i); Z\3~7Ek2m  
} &EmG\vfE  
} {B-*w%}HU  
insertSort(data,0,1); Qk72ra)  
} +/ rt'0o  
6=:s3I^  
/** G>Hg0u0!,  
* @param data $b(CN+#  
* @param j rCUGaf~  
* @param i g%<n9AUl  
*/ ]f_`w81[  
private void insertSort(int[] data, int start, int inc) { h0$Y;=YA  
int temp; 6EeO\Qj{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eG7Yyz+t$  
} 9l(T>B2a  
} vUCmm<y  
} ]I_*+^?tI  
aW-6$=W  
} Wdi`Z E  
tI)|y?q  
快速排序: _n1[(I  
'o~gT ;T#  
package org.rut.util.algorithm.support; Al=ByX@  
B"8jEYT5  
import org.rut.util.algorithm.SortUtil; t)1`^W}  
1yVhO2`7]  
/** MU%7'J :_  
* @author treeroot v7 n@CWnN  
* @since 2006-2-2 "}V_.I* +  
* @version 1.0 IC?(F]$%>  
*/ u*/+cT  
public class QuickSort implements SortUtil.Sort{ uP+VS>b  
+Qf}&D_  
/* (non-Javadoc) *YSRZvD<\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |nE4tN#J<  
*/ /3&MUB*z&y  
public void sort(int[] data) { 0` .5gxm  
quickSort(data,0,data.length-1); Re&"Q8I.8  
} [Q+k2J_h  
private void quickSort(int[] data,int i,int j){ P?S]Q19Q4  
int pivotIndex=(i+j)/2; 5vg="@O K  
file://swap (zh[1[a  
SortUtil.swap(data,pivotIndex,j); xv&h>GOg  
oC-v>&bW  
int k=partition(data,i-1,j,data[j]); |c^?tR<  
SortUtil.swap(data,k,j); 1je j7p>K  
if((k-i)>1) quickSort(data,i,k-1); <v'&Pk<  
if((j-k)>1) quickSort(data,k+1,j); )U=]HpuzI  
sM+~x<}0  
} Ek1c>s,t  
/** ?U{<g,^  
* @param data ^GyZycch  
* @param i }B a_epM  
* @param j N<1+aL\  
* @return <Se9 aD  
*/ 2?SbkU/3|P  
private int partition(int[] data, int l, int r,int pivot) { 'NZ=DSGIy  
do{ kRc+OsY9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xx(C$wCJ  
SortUtil.swap(data,l,r); =J4|"z:  
} 1X&.po  
while(l SortUtil.swap(data,l,r); fbU3-L?  
return l; lLDZ#'&An  
} [}]yJ+)  
rlD!%gG2x  
} n}j6gN!O  
9! /kyyU  
改进后的快速排序: uZZRFioX|  
Px&_6}YWy  
package org.rut.util.algorithm.support; 1I{8 |  
> (9\ cF{  
import org.rut.util.algorithm.SortUtil; g4 eW<  
-5 8q 6yA  
/** 9 @xl{S-  
* @author treeroot nQoQNB  
* @since 2006-2-2 J|].h  
* @version 1.0 kw@^4n+M  
*/ ( *Xn"o  
public class ImprovedQuickSort implements SortUtil.Sort { A4cOnG,  
U(9_&sL  
private static int MAX_STACK_SIZE=4096; ^:]$m;v]  
private static int THRESHOLD=10; p |1u,N  
/* (non-Javadoc) h='F,r5#2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # )y/aA  
*/ " X8jpg  
public void sort(int[] data) {  -X71JU  
int[] stack=new int[MAX_STACK_SIZE]; r`.N?  
[IQ|c?DxpL  
int top=-1; q+y\pdhdO  
int pivot; {BT/P!  
int pivotIndex,l,r; 0=#>w_B  
S.)Jp -&K  
stack[++top]=0; }&t>j[  
stack[++top]=data.length-1; avL_>7q  
r]UF<*$  
while(top>0){ V@!)Pw  
int j=stack[top--]; \1Xk[%  
int i=stack[top--]; 4] uj+J  
%KXiB6<4  
pivotIndex=(i+j)/2; IF|6iKCE  
pivot=data[pivotIndex]; =y4dR#R(\  
b1Kt SRLV  
SortUtil.swap(data,pivotIndex,j); ^w.hI5ua)  
&J*M  
file://partition 1XMR7liE  
l=i-1; {^ b2nOMv  
r=j; ^Aq0<  
do{ *L$2M?xkY  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Zn'tNt/  
SortUtil.swap(data,l,r); uI)twry]@  
} Z0jgUq`r  
while(l SortUtil.swap(data,l,r); /}(d'@8p  
SortUtil.swap(data,l,j); +t+<?M B  
:q]9F4im  
if((l-i)>THRESHOLD){ r8Mx +r  
stack[++top]=i; fq]PKLW'  
stack[++top]=l-1; .mt%8GM  
} |zYOCDFf  
if((j-l)>THRESHOLD){ { K]5[bMT  
stack[++top]=l+1; {O^u^a\m  
stack[++top]=j; |4Q*4s  
} 9)ALJd,M  
ds(?:zx#  
} ]~KLdgru_  
file://new InsertSort().sort(data); _XV%}Xb'  
insertSort(data); vRmn61  
} jdP )y]c  
/** XiE`_%NW  
* @param data t>I.1AS  
*/ TZAd{EZa  
private void insertSort(int[] data) { G @..?>  
int temp; t?W}=%M[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {`QHg O  
} X#lNS+&='  
} P5h|* ?=  
} .B# .   
(Q^sK\  
} DK)W ,z|  
K^shTh8k  
归并排序: 4hL%J=0:  
Yf w>x[#e  
package org.rut.util.algorithm.support; ?m |}}a  
["Ltqgx  
import org.rut.util.algorithm.SortUtil; 2T~cOH;T  
CWn\K R  
/** D(#f`Fj;  
* @author treeroot G@[8P?M=Z  
* @since 2006-2-2 mll :rWC)  
* @version 1.0 _h~ksNm5u  
*/ 0 =j }`  
public class MergeSort implements SortUtil.Sort{ qN)y-N.LI(  
~#A}=, 4>  
/* (non-Javadoc) &9p!J(C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z<-_Y]4j  
*/ %9J@##+  
public void sort(int[] data) { ` p\=NP!n  
int[] temp=new int[data.length]; |h>PUt@LL  
mergeSort(data,temp,0,data.length-1); J:L+q} A  
} s[yWBew  
Cbw *? 9d  
private void mergeSort(int[] data,int[] temp,int l,int r){ &A QqI  
int mid=(l+r)/2; Je1d|1!3  
if(l==r) return ; bbK};u  
mergeSort(data,temp,l,mid); WQK<z!W5  
mergeSort(data,temp,mid+1,r); m+kP"]v  
for(int i=l;i<=r;i++){ {^VtD  
temp=data; }TmOoi(X@  
} ~~tTr $  
int i1=l; %ou,|Dww  
int i2=mid+1; {ez $kz  
for(int cur=l;cur<=r;cur++){ `>gG"1,]  
if(i1==mid+1) 5p;AON  
data[cur]=temp[i2++]; 'o >)E>  
else if(i2>r) ;b$P*dSG}  
data[cur]=temp[i1++]; >lQo _p(;  
else if(temp[i1] data[cur]=temp[i1++]; 1- KNXGb'  
else I`kfe`_  
data[cur]=temp[i2++]; 9DxHdpOk  
} `8:)? 0Ez  
} CLR1 CGnn7  
O VV@  
} Rh!UbEPjC  
06&J!,p :  
改进后的归并排序: :C~Ar]  
*'< AwG&  
package org.rut.util.algorithm.support; M!UTqf7XL  
2Je $SE8  
import org.rut.util.algorithm.SortUtil; .DCHc,DxA  
hi7_jl6  
/** -+#%]P8l  
* @author treeroot Gm=qn]c  
* @since 2006-2-2 ZZw`8 E  
* @version 1.0 -Zt!H%U  
*/ RZOK+!H:  
public class ImprovedMergeSort implements SortUtil.Sort { i"2OsGT  
e7vm3<m4  
private static final int THRESHOLD = 10; 4CNrIF@  
D*XrK0#Z`  
/* QQ*sjK.(  
* (non-Javadoc) o.+;]i}D  
* Dp@XAyiA[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NB-dlv1  
*/ oxwbq=a6yV  
public void sort(int[] data) { [2%[~&4  
int[] temp=new int[data.length]; bz4Gzp'6k  
mergeSort(data,temp,0,data.length-1); Hq3|>OqC2Q  
} *LT~:Gs#  
{keZ_2  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1|bXIY.J*  
int i, j, k; +#}GmUwPG$  
int mid = (l + r) / 2; d>NGCe  
if (l == r) 7FB?t<x  
return; B VBn.ut  
if ((mid - l) >= THRESHOLD) ]P4WfV d  
mergeSort(data, temp, l, mid); R=D]:u<P  
else Njq}M/{U  
insertSort(data, l, mid - l + 1); o-,."|6  
if ((r - mid) > THRESHOLD) vwCQvt  
mergeSort(data, temp, mid + 1, r); rPV Q#iB  
else  (I[_}l  
insertSort(data, mid + 1, r - mid); 615Ya<3f8  
,6)N.  
for (i = l; i <= mid; i++) { k s40 5  
temp = data; wj)LOA0  
} vB:\ZX4  
for (j = 1; j <= r - mid; j++) { Y"Cf84E  
temp[r - j + 1] = data[j + mid]; @= -(H<0  
} P"YdB|I  
int a = temp[l]; 1'kO{Ge*p:  
int b = temp[r]; \Z-th,t  
for (i = l, j = r, k = l; k <= r; k++) {  q6 CrUn  
if (a < b) { !b8V&<  
data[k] = temp[i++]; F'bwXb**  
a = temp; }K{1Bm@S  
} else { "F F$Q#)  
data[k] = temp[j--]; _jWs(OmJ  
b = temp[j]; E$ d#4x  
} 5E!C?dv(z  
} OgQd yU  
} ]?9*Vr:P^  
nL@'??I1  
/** mypV[  
* @param data K$"#SZEi  
* @param l Ayz*2 N`%  
* @param i > I2rj2M#  
*/ u[>"_!T  
private void insertSort(int[] data, int start, int len) { v88vr  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 87 Z[0>  
} #mxOwvJ  
} !Sc"V.o @!  
} L^J4wYFTO  
} ]e>qvSuYh  
6g(;2gY  
堆排序: bLqy7S9x  
agIqca;  
package org.rut.util.algorithm.support; DUp`zW;B  
wk(25(1q  
import org.rut.util.algorithm.SortUtil; 8-Abg:)  
,OE&e* 1  
/** tKbxC>w  
* @author treeroot /cjz=r1U>  
* @since 2006-2-2 P/%7kD@5;  
* @version 1.0 6h 0qtXn-  
*/ 5`;SI36"  
public class HeapSort implements SortUtil.Sort{ 4TtC~#D:  
iaGA9l<b  
/* (non-Javadoc) j=WxtMS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) coP->&(@U#  
*/ +m=b "g  
public void sort(int[] data) { %(CC  
MaxHeap h=new MaxHeap(); f56yI]*N=<  
h.init(data); Jo?LPR \6  
for(int i=0;i h.remove(); VB |?S|<  
System.arraycopy(h.queue,1,data,0,data.length); %hB-$nE  
} l.Q  
W .a>K$  
private static class MaxHeap{ n,N->t$i  
#bOv}1,s  
void init(int[] data){ M/ 3;-g  
this.queue=new int[data.length+1]; ]OAU&t{  
for(int i=0;i queue[++size]=data; Z@~gN5@,M  
fixUp(size); Kb~nC6yJc  
} _4{0He`q  
} ,=/9Ld2w9  
,Py\Cp=Dw  
private int size=0; Sd+5Uf `  
qv!(In>u  
private int[] queue; <=(K'eqC^  
7 N}@zPAZ  
public int get() { 7Cz~nin>7  
return queue[1]; 26V6Y2X  
} ysaRH3M  
r~b.tpH  
public void remove() { a>4/2#J  
SortUtil.swap(queue,1,size--); Dri6\/0  
fixDown(1); qe]D4K8`Q3  
} I?T !  
file://fixdown {^]qaQ[5N  
private void fixDown(int k) { UZdnsG7  
int j; hf`y_H+\7  
while ((j = k << 1) <= size) { x39tnf/F  
if (j < size %26amp;%26amp; queue[j] j++; N,`@Q7  
if (queue[k]>queue[j]) file://不用交换 h ldZA  
break; xP8/1wd.  
SortUtil.swap(queue,j,k); #MC#K{Xd  
k = j; &;Ncc,jb  
} O,$*`RZpx  
} fB2ILRc  
private void fixUp(int k) { ak7%  
while (k > 1) {  \XDiw~0  
int j = k >> 1; l\_!oa~  
if (queue[j]>queue[k]) ?1Nz ,Lc$  
break; kQ\GVI11?  
SortUtil.swap(queue,j,k); ]TvMT  
k = j; x[ A|@\Z  
} 757&bH|a  
} l)r\SE1  
y-pdAkDh  
} |nMjv]#  
01(U)F\  
} [* xdILj  
7F`\Gz_2  
SortUtil: Ar-Vu{`  
FPc `J  
package org.rut.util.algorithm; <IrhR,@M,L  
Q%CrB>|@  
import org.rut.util.algorithm.support.BubbleSort; Q Xd`P4a  
import org.rut.util.algorithm.support.HeapSort; }T_"Vg q  
import org.rut.util.algorithm.support.ImprovedMergeSort; W ?x~"-*  
import org.rut.util.algorithm.support.ImprovedQuickSort; fh#:j[R4e  
import org.rut.util.algorithm.support.InsertSort; yQJ0",w3o.  
import org.rut.util.algorithm.support.MergeSort; V_i&@<J  
import org.rut.util.algorithm.support.QuickSort; 8)>>EN8 R  
import org.rut.util.algorithm.support.SelectionSort; GcM1*)$ 4  
import org.rut.util.algorithm.support.ShellSort; :tWk K$  
PYQ0&;z  
/** xM())Z|2  
* @author treeroot O%t? -h  
* @since 2006-2-2 = MByD&o`  
* @version 1.0 5;`Ot2  
*/ kEh9J>|M  
public class SortUtil { {-)^?Zb @  
public final static int INSERT = 1; Csyh 'v  
public final static int BUBBLE = 2; 6;E3|st1X  
public final static int SELECTION = 3; ,Uh^e]pC  
public final static int SHELL = 4; |=5zI6pT  
public final static int QUICK = 5; "8Dm7)nB  
public final static int IMPROVED_QUICK = 6; lz^Vi!|p  
public final static int MERGE = 7; uh\G6s!4/  
public final static int IMPROVED_MERGE = 8; 5K Ij}VN  
public final static int HEAP = 9; (N/u@M  
=Ti!9_~  
public static void sort(int[] data) { :ok.[q  
sort(data, IMPROVED_QUICK); 4 95Y<x}=  
} 65Z}Hf  
private static String[] name={ gX"  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5Q"yn2b4  
}; bI.hG32  
nw+t!C  
private static Sort[] impl=new Sort[]{ Sr+hB>{  
new InsertSort(), =1Plu5  
new BubbleSort(), vhMoCLb  
new SelectionSort(), nscnG5'{+  
new ShellSort(), 5,xPB5pK  
new QuickSort(), ( yLu=  
new ImprovedQuickSort(), dr)*.<_+a(  
new MergeSort(), _J*l,]}S  
new ImprovedMergeSort(), Le83[E*i  
new HeapSort() 0 Rb3| te  
}; v:lkvMq|=  
(o{Y;E@/y  
public static String toString(int algorithm){ V;^-EWNj  
return name[algorithm-1]; ^a qQw u  
} l#uF%;GDX  
uV|F 3'jT  
public static void sort(int[] data, int algorithm) { 5$ How!  
impl[algorithm-1].sort(data); @Ez>?#z  
} #ChTel  
(YJ2- X~  
public static interface Sort { H2iIBGu|L  
public void sort(int[] data); k8G4CFg}wP  
} PY|zN|  
ZQ"dAR/y  
public static void swap(int[] data, int i, int j) { P%B|HnG^  
int temp = data; mN-O{k0\  
data = data[j]; +:Xg7H*  
data[j] = temp; 'oz$uvX  
} !bzWgD7j  
} =nHkFi@D=t  
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