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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。 De\Ocxx  
插入排序: I:M15  
IeAi'  
package org.rut.util.algorithm.support; C3KAQ U  
PnH5[4&k  
import org.rut.util.algorithm.SortUtil; W$J@|i  
/** AG|:mQO  
* @author treeroot h*?]A  
* @since 2006-2-2 fs2y$HN  
* @version 1.0 w& )ApfL  
*/ Q zY5S0  
public class InsertSort implements SortUtil.Sort{ @v/ 8}n  
nq\~`vH|Gd  
/* (non-Javadoc) rxOv YF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HE-ErEtGB  
*/ jpZ 7p ;  
public void sort(int[] data) { |<#yXSi  
int temp; l4y>uZ>a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (Ft#6oK"  
} U%)*I~9  
} [j?<&^SW  
} lt%9Zgr[u  
ctR ^"'u  
} 7)BK&kpVr  
c1<jY~U  
冒泡排序: ,uZz?7mO  
d~y]7h|  
package org.rut.util.algorithm.support; Y]Zp[!  
UPkc-^BN  
import org.rut.util.algorithm.SortUtil; |21*p#>  
W(EN01d\  
/** ,vB nr_D#  
* @author treeroot :M.]-+(  
* @since 2006-2-2 v V>=Uvm  
* @version 1.0 I=;=;-  
*/ ufN`=IJ%  
public class BubbleSort implements SortUtil.Sort{ x5k6"S"1,  
b<BkI""b  
/* (non-Javadoc) GD4+f|1.*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LAuaowE\v  
*/ %Lom#:L'  
public void sort(int[] data) { o`nJJ:Cxq-  
int temp; ]3 76F7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ X]s="^  
if(data[j] SortUtil.swap(data,j,j-1); -ug -rdXV  
} D 1(9/;9  
} 7|<-rjz^  
} o),@I#fM  
} X(Lz&fkd  
1%7zCM0s  
} ODKS6E1{  
:JK+V2B$H  
选择排序: Q@rlqWgU ~  
!*}E  
package org.rut.util.algorithm.support; >[g.8'hI  
,<;.'r  
import org.rut.util.algorithm.SortUtil; Ll`nO;h  
\F<C$cys\  
/** Wv30;7~  
* @author treeroot P%ZU+ET  
* @since 2006-2-2 =_[Ich,}  
* @version 1.0 `&J=3x  
*/ 70Ei<  
public class SelectionSort implements SortUtil.Sort { @1V?94T1  
}BiA@n,  
/* d6A+pa'2  
* (non-Javadoc) k"+/DK,:  
* *enT2Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CL5t6D9Qi  
*/ 5oR)  
public void sort(int[] data) { 8|Wl|@1(  
int temp; $HAwd6NI  
for (int i = 0; i < data.length; i++) { tY60~@YO&  
int lowIndex = i; dl+c+w"  
for (int j = data.length - 1; j > i; j--) { O`.IE? h#  
if (data[j] < data[lowIndex]) { l?KP /0`  
lowIndex = j; $Q`\-  
} VW:Voc  
} >| hqt8lY  
SortUtil.swap(data,i,lowIndex); 2lxA/.f  
} Rc}#4pM8  
} 3# idXc  
G$jw#a[L  
} oSH]TL2@Cd  
q]v{o8:U  
Shell排序: +Rq]_ sDu  
Q S<)*  
package org.rut.util.algorithm.support; V# JuNJ  
2K2_-  
import org.rut.util.algorithm.SortUtil; B";Dj~y  
qcfg 55]'c  
/** jNAboSf2Y  
* @author treeroot r: ,"k:C  
* @since 2006-2-2 FwDEYG  
* @version 1.0 .FvIT] k-  
*/ IDp2#qg_  
public class ShellSort implements SortUtil.Sort{ hlHle\[ds  
o6 8;-b'n  
/* (non-Javadoc) muKjeg'b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (~^KXJ{->  
*/ 7+m.:~H3}  
public void sort(int[] data) { FeJKXYbk<  
for(int i=data.length/2;i>2;i/=2){ nDXy$f8  
for(int j=0;j insertSort(data,j,i); Suk;##I  
} |q 0iX2W  
} qO>A 6  
insertSort(data,0,1); rM20Y(|  
} }5y ]kn  
=l%|W[OO  
/** D/tFN+|P  
* @param data r,ep{ p  
* @param j 2&:nHZ)  
* @param i Rc~63![O.  
*/ ,772$7x  
private void insertSort(int[] data, int start, int inc) { %D[6;PT  
int temp; w=ZK=@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5- "aK~@+  
} j`-9.  
} 67wq8|  
} lv& y<d;  
m!:sDQn{3  
} 03 ;L  
S,#UA%V"  
快速排序: K}Lu1:~  
/?:q9Wy  
package org.rut.util.algorithm.support; sB<y(}u  
2bTM0-  
import org.rut.util.algorithm.SortUtil; 3NrWt2?  
6"V86b0)h}  
/** z_87 ;y;=  
* @author treeroot Uy$?B"Z  
* @since 2006-2-2 0lpUn74F  
* @version 1.0 s5oU  
*/ yu=(m~KX   
public class QuickSort implements SortUtil.Sort{ Y NGS"3F  
8&v%>wxR@  
/* (non-Javadoc) {Pe+d3Eoo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <is%lx(GDX  
*/ Bmi9U   
public void sort(int[] data) { b IZi3GmRF  
quickSort(data,0,data.length-1); @BqSu|'Du,  
} A@n//AZM  
private void quickSort(int[] data,int i,int j){ n<MreKixE  
int pivotIndex=(i+j)/2; :SVWi}:Co1  
file://swap 8z* /J=n  
SortUtil.swap(data,pivotIndex,j); %>,Kd6bdg  
rq^VOK|L  
int k=partition(data,i-1,j,data[j]); s@|TQ9e |j  
SortUtil.swap(data,k,j); HeM-  
if((k-i)>1) quickSort(data,i,k-1); 'dcO-A:>  
if((j-k)>1) quickSort(data,k+1,j); {(^%2dk83C  
|3 v+&eVi  
} oY7 eVuz  
/** +'9eo%3O  
* @param data ~ tqDh(  
* @param i 'h;x>r  
* @param j o*s3"Ib  
* @return qr?RU .W  
*/ Dqm;twd>  
private int partition(int[] data, int l, int r,int pivot) { 7 JVonruaR  
do{ =%9j8wHX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0/zgjT|fe  
SortUtil.swap(data,l,r); N"2P]Z r  
} x: 2 o$+v3  
while(l SortUtil.swap(data,l,r); `6y\.6j  
return l; axdRV1+s  
} xMo'SpVz:  
(J`EC  
} Eo_; N c  
1'9YY")#  
改进后的快速排序: q@Sj$  
yx/.4DW1Ua  
package org.rut.util.algorithm.support; 2R`}}4<Z  
s%t =*+L\  
import org.rut.util.algorithm.SortUtil; *gN)a%9  
t`vIcCXqyl  
/** \m1jV>q  
* @author treeroot ??=7pFm  
* @since 2006-2-2 &BQ%df<y\  
* @version 1.0 LArfX,x3i  
*/ Vc| uQ8Mi  
public class ImprovedQuickSort implements SortUtil.Sort { |&H(skF_  
z|i2M8  
private static int MAX_STACK_SIZE=4096; XB\n4 |4  
private static int THRESHOLD=10; .l~g`._  
/* (non-Javadoc) /SQ1i}%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +AL(K:  
*/ +U,>D +  
public void sort(int[] data) { 2f.4P]s`T  
int[] stack=new int[MAX_STACK_SIZE]; o'p[G]NQ1o  
&!O~ f  
int top=-1; !7aJfs2  
int pivot; Bhw|!Y&%  
int pivotIndex,l,r; ;>B06v  
3dC ;B@  
stack[++top]=0; k^r-~q+NV#  
stack[++top]=data.length-1; #BX^"J{~  
GYN Lyd)  
while(top>0){ &Ch~$Wb^  
int j=stack[top--]; c9R|0Yn^J  
int i=stack[top--]; o|7 h  
#"aL M6Cfs  
pivotIndex=(i+j)/2; LkIbvJCV  
pivot=data[pivotIndex]; [5QbE$  
-O?&+xIK&  
SortUtil.swap(data,pivotIndex,j); J1{ucFa  
>X-*Hu'U#  
file://partition ^ l9NF  
l=i-1; '.d]n(/lZd  
r=j; ~3s\Q%   
do{ =hB0p^a  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^ ]CQd   
SortUtil.swap(data,l,r); {]dH+J7  
} .3,6Oo  
while(l SortUtil.swap(data,l,r); Z|qUVD5Ic  
SortUtil.swap(data,l,j); cp<jwcc!  
#gY|T|  
if((l-i)>THRESHOLD){  0@dN$e  
stack[++top]=i; 6i_dL|c  
stack[++top]=l-1; xEvm>BZi  
} T&~7*j(|e  
if((j-l)>THRESHOLD){ K44j-Ypb  
stack[++top]=l+1; Hnc<)_DF  
stack[++top]=j; 3eP7vy  
} SjB#"A5  
;OfZEy>7  
} wQ/Z:  
file://new InsertSort().sort(data); 088"7 s  
insertSort(data); 7H5t!yk|9  
} PV,AN   
/** %t<ba[9F  
* @param data 52d8EGC  
*/ ZMI vzQYI  
private void insertSort(int[] data) { F_C_K"[s  
int temp; *;y n_zg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [*AWCV  
} u#`FkuE\}  
} ;f)o_:(JJ  
} E5F0C]hq  
iHL`r1I!  
} t`y*oRy  
[W2GLd]  
归并排序: JypXQC}~  
CxRh MhvP  
package org.rut.util.algorithm.support; Y;6%pm$  
7O.{g  
import org.rut.util.algorithm.SortUtil; dw]wQ\4B  
+F3`?6UXz  
/** lc2RMu  
* @author treeroot mFXkrvOf,  
* @since 2006-2-2 K7N.gT*4  
* @version 1.0 a5xmIp@6  
*/ "ZLujpZcG  
public class MergeSort implements SortUtil.Sort{ +1 j+%&).  
N_Y*Z`Xb  
/* (non-Javadoc) /l@h[}g+d-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C ^hCT  
*/ Oe[qfsdW  
public void sort(int[] data) { jJDY l([  
int[] temp=new int[data.length]; .&Ok53]b  
mergeSort(data,temp,0,data.length-1); xRU ~h Q  
} du k:: |{F  
KGoHn6jM  
private void mergeSort(int[] data,int[] temp,int l,int r){ t=Um@;wh  
int mid=(l+r)/2; ,t=12R]>  
if(l==r) return ; ,dO$R.h  
mergeSort(data,temp,l,mid); 81<0B @E  
mergeSort(data,temp,mid+1,r); Z 2x%  
for(int i=l;i<=r;i++){ :u$+lq  
temp=data; Qo;#}%}^^  
} )Mj $/  
int i1=l; eX@7f!uz  
int i2=mid+1; J \V.J/  
for(int cur=l;cur<=r;cur++){ 3Ta<7tEM  
if(i1==mid+1) {BlKVsQ  
data[cur]=temp[i2++]; Ud8*yB  
else if(i2>r) ,@'M'S  
data[cur]=temp[i1++]; xFY< ns  
else if(temp[i1] data[cur]=temp[i1++]; ~1yMw.04V  
else bhb*,iWA  
data[cur]=temp[i2++]; !(wH}ti  
} k;9"L90  
} 2og8VI  
GXE6=BO  
} @\UoZv(  
j$8i!C  
改进后的归并排序: q T pvz  
Y4B< ]C4  
package org.rut.util.algorithm.support; J|BZ{T}d  
VF<C#I  
import org.rut.util.algorithm.SortUtil; XN=Cq*3}  
66+y@l1  
/** t9Nu4yl  
* @author treeroot m*^|9*dIC  
* @since 2006-2-2 l6S6Y  
* @version 1.0 S"z cSkF  
*/ ]$vJK  
public class ImprovedMergeSort implements SortUtil.Sort { N3`W%ws`~  
2%DleR'i  
private static final int THRESHOLD = 10; P6E=*^^m(  
+L$,jZqS  
/* v8`)h<:W?  
* (non-Javadoc) Twj?SV  
* *I(g~p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XI*_ti  
*/ C;jV{sb9c  
public void sort(int[] data) { Q#i^<WUpg  
int[] temp=new int[data.length]; _x.D< n=X  
mergeSort(data,temp,0,data.length-1); g}-Ch#  
} P"g Y|}|  
+HK)A%QI  
private void mergeSort(int[] data, int[] temp, int l, int r) { yeCR{{B/'  
int i, j, k; <9s=K\-  
int mid = (l + r) / 2; f 2#9E+IQ  
if (l == r) R "&(Ae?LR  
return; /Lc= K<  
if ((mid - l) >= THRESHOLD) 2z\4?HJy  
mergeSort(data, temp, l, mid); 7Pc0|Z/  
else P~+?:buqc  
insertSort(data, l, mid - l + 1); _uO#0 )l  
if ((r - mid) > THRESHOLD) |@-%x.y  
mergeSort(data, temp, mid + 1, r); i~IQlyGr.  
else B9 Dh^9?L  
insertSort(data, mid + 1, r - mid); Qw$"W/&X  
r $du-U  
for (i = l; i <= mid; i++) { $J |oVVct  
temp = data; D k'EKT-  
} xmDX1sL**  
for (j = 1; j <= r - mid; j++) { Ohm>^N;  
temp[r - j + 1] = data[j + mid]; >q&Q4E0  
} (Jw[}&+  
int a = temp[l]; !k&~|_$0@  
int b = temp[r]; [LonY49  
for (i = l, j = r, k = l; k <= r; k++) { ,qRSB>5c  
if (a < b) { {tE/Jv $  
data[k] = temp[i++]; %(-YOTDr  
a = temp; Or9@X=C  
} else { ~EU[?  
data[k] = temp[j--]; f$E66yG  
b = temp[j]; ~PNO|]8j  
} ."Yub];H  
} xrT_ro8  
} j}R4m h  
6bg+U`&g  
/** 0NSn5Hq  
* @param data |zu>G9m  
* @param l 7[-jr;v  
* @param i v.1= TBh  
*/ (oxe\Qk  
private void insertSort(int[] data, int start, int len) { 'D-#,X C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &F}1\6{fL  
} 6QRfju'  
} =3=KoH/'  
} zJMKgw,i*  
} l\^q7cXG  
'KGY;8<x]  
堆排序: e![Q1!r  
lq@Vb{Z  
package org.rut.util.algorithm.support; AEwb'  
{K'SOh H4?  
import org.rut.util.algorithm.SortUtil; kXC.rgal  
04;y%~,}U/  
/** 7/vr!tbL`p  
* @author treeroot FGx_ qBG4|  
* @since 2006-2-2 LM'` U-/e$  
* @version 1.0 v%< _Mh  
*/ t%z7#}9$  
public class HeapSort implements SortUtil.Sort{ IQ{Xj3;?y  
3i(k6)H$4  
/* (non-Javadoc) MatC2-aV1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bT-G<h*M  
*/ (?\ZN+V)  
public void sort(int[] data) { gE=~.P[ZX  
MaxHeap h=new MaxHeap(); fnnwe2aso  
h.init(data); vP}K(' (  
for(int i=0;i h.remove(); ^qbX9.\  
System.arraycopy(h.queue,1,data,0,data.length); +$>ut r  
} ):78GVp  
Q]xW}5 /  
private static class MaxHeap{ QBsDO].J<  
w#mnGD  
void init(int[] data){ sW2LNE  
this.queue=new int[data.length+1]; `^J~^Z7Y-  
for(int i=0;i queue[++size]=data; ,P"R.A  
fixUp(size); <(p1 j0_Q  
} l*Y~h3  
} 3R#<9O  
W,{`)NWg  
private int size=0; _R(5?rG,  
Y)u} +Yg  
private int[] queue; SbnV U[  
3}:pD]`h  
public int get() { C6"!'6 W  
return queue[1]; 2K*-uT#$~  
} ] |`gTD6  
paBGJ~{=  
public void remove() { el|t6ZT*  
SortUtil.swap(queue,1,size--); ~POeFZ  
fixDown(1); Br~%S?4"o  
} oh@r0`J]x  
file://fixdown 3`9*Hoy0c  
private void fixDown(int k) { PYHm6'5BtB  
int j; "(efd~.]  
while ((j = k << 1) <= size) { x#8=drh.:C  
if (j < size %26amp;%26amp; queue[j] j++; ,t+ATaOF  
if (queue[k]>queue[j]) file://不用交换 r3j8[&B"  
break; )vU{JY;  
SortUtil.swap(queue,j,k); Ic=V:  
k = j; H+5]3>O-$  
} aY:(0en]&  
} k13/yiv  
private void fixUp(int k) { +~fu-%,k  
while (k > 1) { M.8!BB7\8e  
int j = k >> 1; : m5u=:t  
if (queue[j]>queue[k]) :s'%IGy>:  
break; .V.N^8(:a  
SortUtil.swap(queue,j,k); dY-a,ch"8p  
k = j; >Au<y,Tw  
} >A,WXzAK}S  
} 3N*Shzusbt  
2mlE;.}8  
} $GO'L2oLwn  
^p7(  
} rbtV,Y  
4P~<_]yf  
SortUtil: \~)573'  
2@&|hd=-  
package org.rut.util.algorithm; CXQ ?P  
8S02 3  
import org.rut.util.algorithm.support.BubbleSort; `2fuV]FW  
import org.rut.util.algorithm.support.HeapSort; P~qVr#eU  
import org.rut.util.algorithm.support.ImprovedMergeSort; &"kx (B  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0 j.Sb2  
import org.rut.util.algorithm.support.InsertSort; JZXc1R| 9  
import org.rut.util.algorithm.support.MergeSort; Ksp;bfe  
import org.rut.util.algorithm.support.QuickSort; $Tur"_`I;  
import org.rut.util.algorithm.support.SelectionSort; .E}});l  
import org.rut.util.algorithm.support.ShellSort; aXJe"IT.u  
Q]7Q  
/** 2DC#PX)i  
* @author treeroot .~U9*5d  
* @since 2006-2-2 l46F3C|  
* @version 1.0 0/gcSW b  
*/ ;?o C=c  
public class SortUtil { Ii,:+o%  
public final static int INSERT = 1; p_AV3   
public final static int BUBBLE = 2; h^0mjdSp,  
public final static int SELECTION = 3; 4AM*KI  
public final static int SHELL = 4; !qpu /  
public final static int QUICK = 5; P8VU&b\  
public final static int IMPROVED_QUICK = 6; `l+SJLyJ%  
public final static int MERGE = 7; J9 =gv0  
public final static int IMPROVED_MERGE = 8; bvx:R ~E$  
public final static int HEAP = 9; %pp+V1FH  
~?&ijhZ  
public static void sort(int[] data) { G'py)C5;  
sort(data, IMPROVED_QUICK); w?tKL0c  
} o/zCXZnw#  
private static String[] name={ X2uX+}h*tA  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [dJ\|=  
}; EC~t 'v  
;9PM?Iy[  
private static Sort[] impl=new Sort[]{ vRq xZN  
new InsertSort(), DsX>xzM  
new BubbleSort(), ZH(.| NaH  
new SelectionSort(), dvD<>{U,8  
new ShellSort(), LbR-uc?x  
new QuickSort(), WNb$2q=  
new ImprovedQuickSort(), RrHnDO'  
new MergeSort(), EDo@J2A  
new ImprovedMergeSort(), vOK;l0%  
new HeapSort() X u_<4  
}; S2R[vB4).  
<n\.S  
public static String toString(int algorithm){ `g1Oon_  
return name[algorithm-1]; ]1&9~TL  
} ~{+{pcO}  
I5L7BTe  
public static void sort(int[] data, int algorithm) { #I?iR 3u  
impl[algorithm-1].sort(data); n{t',r50  
} '| }}o g  
_o.Z`]  
public static interface Sort { 4iz&"~&1  
public void sort(int[] data); ]K7  64}  
} V)2_T!e%*  
=b7&(x  
public static void swap(int[] data, int i, int j) { dNQSbp  
int temp = data; vy@Lu cB  
data = data[j]; pD#"8h  
data[j] = temp; doc  
} aHC;p=RQ\A  
} .e"Qv*[^  
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