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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。 x+;"(]#  
插入排序: )Co&(;zf  
~P@6f K/M  
package org.rut.util.algorithm.support; 2J0N]`|)  
"H"4]m1Wc  
import org.rut.util.algorithm.SortUtil; O\=c&n~`  
/** /GUbc   
* @author treeroot A!n)Fpk  
* @since 2006-2-2 xzrA%1y  
* @version 1.0 ehe;<A  
*/ hJsYKd8g  
public class InsertSort implements SortUtil.Sort{ "S ~(|G  
rt7Ma2tK  
/* (non-Javadoc) y]5O45E0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R07Kure  
*/ JcEPwF.  
public void sort(int[] data) { t\nYUL-H  
int temp; eK\1cs  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Vx@JP93|  
} 6[kp#  
} 1 dT1DcZ  
} G>{Bij44  
@Otom'O  
} 0  ;$[  
!Q!= =*1H  
冒泡排序: @b\/\\{  
(tV/.x*G  
package org.rut.util.algorithm.support; / %}Xiqlrd  
EnXNTat})  
import org.rut.util.algorithm.SortUtil; 8 /1 sy.R  
Xc;W9e(U  
/** ^>02,X mk  
* @author treeroot z{U2K '  
* @since 2006-2-2 >K$9 (  
* @version 1.0 oJJ2y  
*/ 4QODuyl2H  
public class BubbleSort implements SortUtil.Sort{ X>^St&B}fC  
( /{Wu:e  
/* (non-Javadoc) E7-il;`cKn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W'w;cy:H  
*/ ,)3%@MwO  
public void sort(int[] data) { _NQMi4 V(  
int temp; jovI8Dw >  
for(int i=0;i for(int j=data.length-1;j>i;j--){ HV@ C@wmg  
if(data[j] SortUtil.swap(data,j,j-1); =n>&Bl-Bl  
} 25%[nkO4  
} fB+4mEG@  
} cl kL)7RQ  
} T9.3  
-J8&!S8X  
} zi l^^wT0J  
o.IJ4'}aN  
选择排序: @&(0]kZ6  
>5Y%4++(  
package org.rut.util.algorithm.support; Os--@5e  
+~b@W{  
import org.rut.util.algorithm.SortUtil; t]LOBy-Kv  
*#p}>\Y{  
/** ^ Q]I)U  
* @author treeroot %O] ]La  
* @since 2006-2-2 34S0W]V  
* @version 1.0 xwK{}==U  
*/ BEWDTOY[  
public class SelectionSort implements SortUtil.Sort { KwO;ICdJ  
lezX-5Z  
/* 6U|An*  
* (non-Javadoc) [\eh$r\   
* OolYQU1_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5=Cea  
*/ %0 cFs'  
public void sort(int[] data) { QP HibPP:  
int temp; GH ] c  
for (int i = 0; i < data.length; i++) { e$'|EE.=q+  
int lowIndex = i; Msj(>U&}+  
for (int j = data.length - 1; j > i; j--) { Z !HQ|')N5  
if (data[j] < data[lowIndex]) { Cn6<I{`\  
lowIndex = j; 2z*EamF  
} ;W"=s79  
} a6Zg~>vX  
SortUtil.swap(data,i,lowIndex); BF)!VnJ  
} z{;~$."  
} o/dj1a~U  
faTp|T`nY  
} /[V}   
( AI gW  
Shell排序: Cpg>5N~;L  
|FED<  
package org.rut.util.algorithm.support; Ec3TY<mVr  
P:8 qm DXo  
import org.rut.util.algorithm.SortUtil; /9QC$Z):<  
Kg8n3pLAX  
/** C3k[ipCN  
* @author treeroot X}f u $2  
* @since 2006-2-2 -d+o\qp"#  
* @version 1.0 1 r9.JS  
*/ sa?Ul)L2  
public class ShellSort implements SortUtil.Sort{ ja2BK\"1:  
 Y%zYO  
/* (non-Javadoc) tDWoQ&z2t_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pu OAt  
*/ BbC aIt  
public void sort(int[] data) { qmy3pnL  
for(int i=data.length/2;i>2;i/=2){ ,v@C=4'm  
for(int j=0;j insertSort(data,j,i); /:GeXDJw  
} =zsA@UM0  
} 0wE)1w<C~  
insertSort(data,0,1); N+nv#]{  
} jCK 0+,;  
VKb=)v[K  
/** B;Dl2k^L  
* @param data :k/Z|  
* @param j han S8  
* @param i {b,#l]v  
*/ n4A#T#D!t3  
private void insertSort(int[] data, int start, int inc) { 7=`_UqCV  
int temp; YZ(tjIgQ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J#) %{k_  
} BenUyv1d  
} |T+YC[T#v  
} f?BApm  
6` 4,  
} @.8FVF  
H[[#h=r0f  
快速排序: LXq0hI  
.T*89cEu  
package org.rut.util.algorithm.support; XY)I~6$Y  
ZxoAf;U~  
import org.rut.util.algorithm.SortUtil; / 0ra]}[(  
<tI_u ~P  
/** r"$~Gg.%(  
* @author treeroot 9Ac4'L  
* @since 2006-2-2 Aq,&p,m03  
* @version 1.0 zL=PxFw0  
*/ +2JC**)I  
public class QuickSort implements SortUtil.Sort{ 9R3YUW}s  
W{X5~w(  
/* (non-Javadoc) VpyqVbx1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qk_YFR?R  
*/ \rSofn#c  
public void sort(int[] data) { d Z P;f^^  
quickSort(data,0,data.length-1); Lt2<3DB  
} ;.I,R NM  
private void quickSort(int[] data,int i,int j){ d 6=Z=4w  
int pivotIndex=(i+j)/2; !f01.Tq8  
file://swap a+ s%9l  
SortUtil.swap(data,pivotIndex,j); v<:/u(i  
WKB K)=  
int k=partition(data,i-1,j,data[j]); W0\ n?$ZC~  
SortUtil.swap(data,k,j); ?XnKKw\  
if((k-i)>1) quickSort(data,i,k-1); ,jJbQIu#  
if((j-k)>1) quickSort(data,k+1,j); PNRZUZ4Z|  
V]6CHE:BS  
} 6g 5Lf)yG  
/** fYiof]v@_m  
* @param data r%FfJM@!  
* @param i W;QU6z>  
* @param j ~mk>9Gp  
* @return ^-g-]?q  
*/ bq"dKN`  
private int partition(int[] data, int l, int r,int pivot) {  ;GZ/V;S  
do{  `s~[q  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C7_nA:Rc  
SortUtil.swap(data,l,r); _.+2sm   
} Ybp';8V  
while(l SortUtil.swap(data,l,r); [_1K1i"m  
return l; XpT+xv1`;  
} {8w,{p`  
}HxC ~J"  
} lJ(] ;/%  
e6 a]XO^  
改进后的快速排序: KCi0v  
E#(dri*#t  
package org.rut.util.algorithm.support; 9e0t  
j)Y68fKK  
import org.rut.util.algorithm.SortUtil; #8i9@w  
m?`?T   
/** r@ v&~pL  
* @author treeroot p.x!dt\1kC  
* @since 2006-2-2 ?^!: Lw  
* @version 1.0 "q3W& @  
*/ 04@?Jb1*  
public class ImprovedQuickSort implements SortUtil.Sort { Ry"N_Fb  
fB`7f $[  
private static int MAX_STACK_SIZE=4096; +a74] H"  
private static int THRESHOLD=10; :za:gs0  
/* (non-Javadoc) r 9whW;"q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +WB';D  
*/ /5l"rni   
public void sort(int[] data) { [T(XwA)  
int[] stack=new int[MAX_STACK_SIZE]; Y2j>@  
) H'SU_YU  
int top=-1; gB;5&;T:  
int pivot; C[Ap&S  
int pivotIndex,l,r; /3VSO"kcZ  
v*.[O/,EBR  
stack[++top]=0; DxFmsjX[L  
stack[++top]=data.length-1; [%);N\o2Y  
sUCI+)cM3  
while(top>0){ Hz*5ZIw  
int j=stack[top--]; ,u:J"epM  
int i=stack[top--]; G`_LD+  
7O=N78M  
pivotIndex=(i+j)/2; LkUYh3  
pivot=data[pivotIndex]; X3bPBv  
 ?)_?YLi  
SortUtil.swap(data,pivotIndex,j); uX!5G:x]  
{Tps3{|wt  
file://partition W7F1o[  
l=i-1; va>u1S<lO  
r=j; OzVCqq"]  
do{ )2tDX=D  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xzZ2?z Wi  
SortUtil.swap(data,l,r); %`M IGi#  
} <Z nVWER  
while(l SortUtil.swap(data,l,r); YR 5C`o  
SortUtil.swap(data,l,j); 0:CIM  
uuD|%-Ng  
if((l-i)>THRESHOLD){ 3>~W_c9@  
stack[++top]=i; F&Bh\C)]  
stack[++top]=l-1; Q1b<=,  
} 2@A%;f0Q  
if((j-l)>THRESHOLD){ ;*H@E(g  
stack[++top]=l+1; /S9(rI<'  
stack[++top]=j; V!{}%;f  
} j$<sq  
R2e":`0I  
} c\J?J>xz  
file://new InsertSort().sort(data); @L9C_a  
insertSort(data); 3tt3:`g  
}  1?oX"  
/** u!B6';XY  
* @param data (}#8$ )  
*/ (uxe<'Co|  
private void insertSort(int[] data) { E .'v,GYe  
int temp; MMQ^&!H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9GV1@'<Y]  
} P<tHqN !q  
} +sW;p?K7eO  
} I<``d Ne9Q  
6dN W2_  
} |#Gug('  
ki8;:m4  
归并排序: xk#q_!(j  
mRNA,*  
package org.rut.util.algorithm.support; Ik\n/EE  
w YEkWB^  
import org.rut.util.algorithm.SortUtil; wDvG5  
y37c&XYq  
/** _<8~CWo:  
* @author treeroot <TDp8t9bU  
* @since 2006-2-2 YcmLc)a7  
* @version 1.0 r=J+  
*/ l9P=1TL  
public class MergeSort implements SortUtil.Sort{ F YLBaN  
t/kMV6  
/* (non-Javadoc) %$*WdK#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MmbS ["A  
*/ `xq/<U;i  
public void sort(int[] data) { blk4@pg  
int[] temp=new int[data.length]; 0D s W1  
mergeSort(data,temp,0,data.length-1); }t FRl  
} <y4WG  
!x$6wzKa  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]I[\Io1  
int mid=(l+r)/2; *mjPNp'3{m  
if(l==r) return ; g@2f& m  
mergeSort(data,temp,l,mid); }Sr=|j  
mergeSort(data,temp,mid+1,r); &`%J1[dy  
for(int i=l;i<=r;i++){ 53<.Knw5a  
temp=data; F.cKg~E|e  
} /iw$\F |8  
int i1=l; E'cI}q  
int i2=mid+1; )C>8B`^S  
for(int cur=l;cur<=r;cur++){ BA6(Owb  
if(i1==mid+1) H{et2J<H  
data[cur]=temp[i2++]; X8\UTHT& 0  
else if(i2>r) d^+0=_[PmK  
data[cur]=temp[i1++]; $e, N5/O  
else if(temp[i1] data[cur]=temp[i1++]; %:!ILN  
else `Fx+HIng,  
data[cur]=temp[i2++]; X-y3CO:&@h  
} ~Z:)Y*  
} O)8$aAJ)V  
re)7h$f}  
} GCj[ySCD  
w'6sJ#ba(  
改进后的归并排序: {HtW`r1)Tt  
y!VL`xV  
package org.rut.util.algorithm.support; p|>m 2(|  
f=IF_|@^S  
import org.rut.util.algorithm.SortUtil; bk|?>yd  
e8 1+as  
/** p5aqlYb6r  
* @author treeroot f7b6!R;z_  
* @since 2006-2-2 k![oJ.vHD  
* @version 1.0 t"nxny9&  
*/ sQmJ3 (:HO  
public class ImprovedMergeSort implements SortUtil.Sort { ~X(2F#{<{  
}z F,dst  
private static final int THRESHOLD = 10; F<4>g+Ag  
9Cs/B*3)b  
/* }Ud'j'QMy  
* (non-Javadoc) > zfFvx_q  
* FA{'Ki`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jbe_r<{  
*/ "0Z5cQjg  
public void sort(int[] data) { 48_( 'z*>  
int[] temp=new int[data.length]; x~ID[  
mergeSort(data,temp,0,data.length-1); ]sI\.a  
} oDWNOw  
Te`MIR  
private void mergeSort(int[] data, int[] temp, int l, int r) { uFuP%f!yY  
int i, j, k; ]:}7-;$V  
int mid = (l + r) / 2; LK<ZF=z]Z  
if (l == r) y!T8(  
return; QT=i>X  
if ((mid - l) >= THRESHOLD) '$[a-)4  
mergeSort(data, temp, l, mid); ?:6w6GwAA  
else <Y"HC a{  
insertSort(data, l, mid - l + 1); )<$<9!L4x  
if ((r - mid) > THRESHOLD) *xN?5u%  
mergeSort(data, temp, mid + 1, r); iO"ZtkeNr  
else 2Vs+8/  
insertSort(data, mid + 1, r - mid); jW{bP_,"  
@ V_i%=go  
for (i = l; i <= mid; i++) { $h[Q }uW  
temp = data; %pLqX61t=  
} TAq[g|N-;  
for (j = 1; j <= r - mid; j++) { 4]ko  
temp[r - j + 1] = data[j + mid]; E)|Bl>  
} j8%Y[:~D  
int a = temp[l]; R[rOzoNp0  
int b = temp[r]; ] G^9PZ-  
for (i = l, j = r, k = l; k <= r; k++) { ^a$L9p(  
if (a < b) { 8T8]gM  
data[k] = temp[i++]; >>cL"m  
a = temp; lYey7tl{  
} else { Sbeq%Iwm.  
data[k] = temp[j--]; k"6v& O  
b = temp[j]; `XM0Mm%  
} >DN^',FEm  
} ""m/?TZq'  
} !}sF#  
!3{. V\P)  
/** cC]]H&'Hg+  
* @param data E= .clA  
* @param l N,.awA{  
* @param i 221}xhn5  
*/ ["e;8H[K)%  
private void insertSort(int[] data, int start, int len) { i^8w0H<-@v  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Qwp2h"t`  
} ?A04qk  
} }h* j{b,  
} ey\(*Tu9  
} )%]`uj>*[  
}qOj^pkJ  
堆排序: LU4k/  
l2LUcI$ x  
package org.rut.util.algorithm.support; r^|AiYI)  
(R)(%I1Oz  
import org.rut.util.algorithm.SortUtil; (:2,Rr1"  
jLu`DKB  
/** OfSHZ;,  
* @author treeroot {(,[  
* @since 2006-2-2 1"5-doo  
* @version 1.0 x O~t  
*/ NWq>Z!x`  
public class HeapSort implements SortUtil.Sort{ /?wH1 ,  
<Fa]k'<^)  
/* (non-Javadoc) J` J^C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *.]M1  
*/ ,AO]4Ec  
public void sort(int[] data) { Eu^? e  
MaxHeap h=new MaxHeap(); ;>d uY\$<  
h.init(data);  mOkf   
for(int i=0;i h.remove(); 8 aHs I(  
System.arraycopy(h.queue,1,data,0,data.length); vS{zLXg  
} <cn{S`  
VdZmrq;?/  
private static class MaxHeap{ 1dy>a=W  
_*I@ J/  
void init(int[] data){ cJnAwIs_e`  
this.queue=new int[data.length+1]; UtebSQ+h\  
for(int i=0;i queue[++size]=data; t)*MLg<C  
fixUp(size); Rt[zZv  
} UE[5Bw?4X  
} QKAo}1Pq  
u&!QP4$"z  
private int size=0; EN =oA P  
.1[[Y}  
private int[] queue; \[Dxg`;4  
9,4Lb]  
public int get() { KfO$bmwmx  
return queue[1]; '<A:`V9M}v  
} YtzB/q8I  
MMZdF{5@G  
public void remove() { LvsNU0x  
SortUtil.swap(queue,1,size--); /=5YHq>  
fixDown(1); =-r[ s%t &  
} CO` %eL ~  
file://fixdown Y 7a<3>  
private void fixDown(int k) { QeK@ ++EVc  
int j; L@"1d.k_  
while ((j = k << 1) <= size) {  f:_\S  
if (j < size %26amp;%26amp; queue[j] j++; dQ5_=( 9  
if (queue[k]>queue[j]) file://不用交换 $rAHtr  
break; |]d A`e&y  
SortUtil.swap(queue,j,k); \M H\!  
k = j; 1kG{z;9  
} FZW)C'j  
} 0wx lsny?  
private void fixUp(int k) { Hqel1J  
while (k > 1) { {R2gz]v4  
int j = k >> 1; .#M'  
if (queue[j]>queue[k]) x:h0/f  
break; 9t.u9C=!F  
SortUtil.swap(queue,j,k); 5Av bKT  
k = j; gD"]uj<  
} }=1#ANM1  
} -R^OYgF  
J33enQd  
} xQ[~ c1  
{bxTODt@  
} 8n.sg({g  
i`]-rM%J#  
SortUtil: *o}LI6_u  
WOW:$.VO^  
package org.rut.util.algorithm; XYJ7k7zc+Y  
'[E|3K5d  
import org.rut.util.algorithm.support.BubbleSort; G:W4<w  
import org.rut.util.algorithm.support.HeapSort; C@{#OOa  
import org.rut.util.algorithm.support.ImprovedMergeSort; Uxla,CCp-  
import org.rut.util.algorithm.support.ImprovedQuickSort; $\S;f"IM.  
import org.rut.util.algorithm.support.InsertSort; [Yo3=(7J  
import org.rut.util.algorithm.support.MergeSort; tE i-0J  
import org.rut.util.algorithm.support.QuickSort; q5jLK)  
import org.rut.util.algorithm.support.SelectionSort; K%Dksx7ow  
import org.rut.util.algorithm.support.ShellSort; a J%&Y5L  
6}Se$XMl  
/** So&an !  
* @author treeroot 85>WK+=  
* @since 2006-2-2 Q_ zGs6  
* @version 1.0 v9<7=D&x  
*/ gk"0r\Eq  
public class SortUtil { K+9oV[DMs  
public final static int INSERT = 1; ~hubh!d=  
public final static int BUBBLE = 2; 'S_kD! BO  
public final static int SELECTION = 3; c6IFt4)g  
public final static int SHELL = 4; udRum7XW 3  
public final static int QUICK = 5; >C6wm^bl  
public final static int IMPROVED_QUICK = 6;  $D`~X`  
public final static int MERGE = 7; G#V}9l8 Q  
public final static int IMPROVED_MERGE = 8; aBo8?VV]8  
public final static int HEAP = 9; ooJ ^8L  
4>q^W$  
public static void sort(int[] data) { I6bekOvP  
sort(data, IMPROVED_QUICK); Dj=OUo[[d  
} =5NM =K  
private static String[] name={ KfC8~{O-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -7 GF2 @  
}; +f{CfWIKs  
'b#`)w@/=  
private static Sort[] impl=new Sort[]{ nWTo$*>W  
new InsertSort(), F-!,U)  
new BubbleSort(), [ \I&/?On  
new SelectionSort(), NGl/F{<  
new ShellSort(), g+5{&YD  
new QuickSort(), 71AR)6<R  
new ImprovedQuickSort(), =[wVRQ?  
new MergeSort(), =@#[@Ia  
new ImprovedMergeSort(), SU0K#:  
new HeapSort() UjmBLXz@T  
}; ]+1?T)<!  
A>;Q<8rh  
public static String toString(int algorithm){ goYRA_%cX  
return name[algorithm-1]; F_8nxQ-  
} _xgF?#  
g~ tG  
public static void sort(int[] data, int algorithm) { |ITSd%`3_  
impl[algorithm-1].sort(data); f wN  
} %9z N U  
|_&Tu#er3  
public static interface Sort { f_`gUMf  
public void sort(int[] data); Fs^d-I  
} P;%4Imq3  
=^. f)  
public static void swap(int[] data, int i, int j) { !FhK<#  
int temp = data; FA 1E`AdU  
data = data[j]; U#oe8(?#  
data[j] = temp; [aM_.[bf  
} P0m;AqS#R  
} 5pNbO[  
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