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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。 lRH0)5`  
插入排序: [4\aYB9N  
/=/ HB  
package org.rut.util.algorithm.support; ](nH{aY!  
AAo0M/U'  
import org.rut.util.algorithm.SortUtil; &?r*p0MQC  
/** p&O8qAaO  
* @author treeroot AIv<f9*.:  
* @since 2006-2-2 Ro~fvL~Ps  
* @version 1.0 e96#2A5f  
*/ [zx|eG<&-  
public class InsertSort implements SortUtil.Sort{ PkO!'X  
Man^<T%F  
/* (non-Javadoc) H`5Ct  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C5;wf3  
*/ bQj`g2eyM  
public void sort(int[] data) { hLo>R'@uN  
int temp; T]uKH29.%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `-u7 I  
} J'Gm7h{   
} ThiN9! Y  
} B%mtp;) P  
D:)~%wu Lt  
} OEI3eizgH  
y;r"+bS8  
冒泡排序: #<]Iz'\`  
Wp`C:H  
package org.rut.util.algorithm.support; 3C#RjA-2[  
zQ<88E&&Xs  
import org.rut.util.algorithm.SortUtil; 2NYi-@mr  
"qE {a>d  
/** ,(;5%+#n  
* @author treeroot %ZiK[e3G  
* @since 2006-2-2 )$h-ZYc  
* @version 1.0 YuA7r"c  
*/ ^}@`!ON  
public class BubbleSort implements SortUtil.Sort{ ]) =H  
m3luhGn  
/* (non-Javadoc) m/{Y]D{2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,ex]$fQ'  
*/ 1J&#&\,f&  
public void sort(int[] data) { BCBUb  
int temp; #fN/LO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ L^)qe^%3  
if(data[j] SortUtil.swap(data,j,j-1); z'*ml ?  
} zhjJ>d%w  
} D$$3fN.iEL  
} PLdf_/]-   
} .aJ%am/:%  
?yf_Dt  
} =E1tgrW  
9 ?(x>P  
选择排序: T\fudmj&  
,H@TYw  
package org.rut.util.algorithm.support; b*`fLrqV.  
CC>($k"  
import org.rut.util.algorithm.SortUtil; 0Gx*'B=  
CWBbSGk  
/** ,# eO&  
* @author treeroot Lrlk*   
* @since 2006-2-2 FCAJavOGH  
* @version 1.0 /k) NP  
*/ d=F)y~&'  
public class SelectionSort implements SortUtil.Sort { L\YZT| K(  
%UBPoq  
/* jzQ I>u  
* (non-Javadoc) ;AltNGcM  
* [NjajA~z>F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WkP|4&-<  
*/ %_)b>C18 y  
public void sort(int[] data) {  7BS/T  
int temp; <\p&jk?  
for (int i = 0; i < data.length; i++) { ,[^o9u uB  
int lowIndex = i; ^(J-dK  
for (int j = data.length - 1; j > i; j--) { Cc*|Zw  
if (data[j] < data[lowIndex]) { 8TI#7  
lowIndex = j; <ip)r;  
} y+= \z*9  
} R@&?i=gk  
SortUtil.swap(data,i,lowIndex); }-dF+m:  
} Rd0?zEKV  
} B]i+,u  
"(N-h\7Ex9  
} "~Us#4>  
0OEtU5lf`y  
Shell排序: i6FP[6H1  
9c%(]Rn:  
package org.rut.util.algorithm.support; Gy$o7|PA"{  
?o@E1:aA  
import org.rut.util.algorithm.SortUtil; 5uzpTNAMM1  
Etdd\^  
/** dbd"pR8v  
* @author treeroot Wz5d| b  
* @since 2006-2-2 nE4l0[_  
* @version 1.0 y^ 3,X_0  
*/ eZ[#+0J  
public class ShellSort implements SortUtil.Sort{ iKY-;YK  
jD<9=B(g  
/* (non-Javadoc) >"i~ x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~;` fC|)  
*/ (Y&R0jt  
public void sort(int[] data) { u"eZa!#  
for(int i=data.length/2;i>2;i/=2){ #i6[4X?  
for(int j=0;j insertSort(data,j,i); ^g\h]RD}  
} -)<JBs>  
} WGluZhRuT3  
insertSort(data,0,1); .ZM]%[4  
} U24V55ZnI  
f7 K8m|  
/** omr:C8T>  
* @param data -B",&yTV  
* @param j 2zwuvgiZ  
* @param i XNy:0C  
*/ MuN [U17FB  
private void insertSort(int[] data, int start, int inc) { +h9`I/R  
int temp; MV7}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O'Vh{JHf  
} 8}]l9"q(  
} 6CCZda@  
} +HYN$>  
*'s&/vEy  
} +W!'B r  
WReYF+Uen  
快速排序: 65 NWX8f}  
9[B<rz  
package org.rut.util.algorithm.support; E\W;:p,{A  
A7mMgb_  
import org.rut.util.algorithm.SortUtil; !Mm+bWn=mB  
l^)o'YS y  
/** 1V#B]x:  
* @author treeroot rAtai}Lx  
* @since 2006-2-2 6="M0%  
* @version 1.0 5B_-nYJDt  
*/ 9(V=Ubj  
public class QuickSort implements SortUtil.Sort{ +*WUH513  
6f<*1YR F  
/* (non-Javadoc) ':9%3Wq]j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @w+WLeJ$40  
*/  eYPt  
public void sort(int[] data) { /2=_B4E2  
quickSort(data,0,data.length-1); f'8B[&@L  
} Aigcq38  
private void quickSort(int[] data,int i,int j){ \ >&@lA  
int pivotIndex=(i+j)/2; }mkA Hmu4  
file://swap q=(M!9cE  
SortUtil.swap(data,pivotIndex,j); [J(@$Qix  
o%y+Y;|?J  
int k=partition(data,i-1,j,data[j]); )cf p(16  
SortUtil.swap(data,k,j); R V_MWv  
if((k-i)>1) quickSort(data,i,k-1); 7/$nA<qM  
if((j-k)>1) quickSort(data,k+1,j); nI((ki}v  
$yP'k&b!  
} +y tT)S  
/** 3uB=L 7.  
* @param data h'z+8X_t  
* @param i OLhWkN,qA  
* @param j v)X[gt tf  
* @return +-xSuR,  
*/ '` BjRg57]  
private int partition(int[] data, int l, int r,int pivot) { +Y_Q?/M@8  
do{ y$+!%y*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ljaAB+  
SortUtil.swap(data,l,r); UtHmM,*I  
} AIIBd  
while(l SortUtil.swap(data,l,r); !xJLeQFJI]  
return l; !;BZ#tF&  
} !07FsPI#{  
xF\}.OfWG  
}  Ep#<$6>  
f=-!2#%  
改进后的快速排序: zM3H@;}m  
nA{ncTg1\  
package org.rut.util.algorithm.support; ][T9IAn  
fJ|Bu("N  
import org.rut.util.algorithm.SortUtil; f z/?=  
MZ >0K  
/** g~i''lng  
* @author treeroot  Y,<WX v  
* @since 2006-2-2 f D]An<  
* @version 1.0 |1\dCE03}  
*/ + 3~Gc<OO  
public class ImprovedQuickSort implements SortUtil.Sort { giA~+m~fN  
*;V2_fWJ@  
private static int MAX_STACK_SIZE=4096; K{`2jK#  
private static int THRESHOLD=10; ~7)rKHau  
/* (non-Javadoc) mYsuNTx!.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {!:|.!-u  
*/ ?trt4Tbe/  
public void sort(int[] data) { z[$9B#P  
int[] stack=new int[MAX_STACK_SIZE]; V@54k*V  
vh:UXE lm  
int top=-1; N`L' 4v)  
int pivot; uj+.L6S  
int pivotIndex,l,r; c DEe?WS  
q^T&A[hMPx  
stack[++top]=0; iYmzk?U  
stack[++top]=data.length-1; }SJLBy0  
sbq44L)  
while(top>0){ H8=vQy  
int j=stack[top--]; /(WX!EEsB  
int i=stack[top--]; 4IGQ,RTB  
 HC<BGIgL  
pivotIndex=(i+j)/2; \|b1s @c8  
pivot=data[pivotIndex]; D{Jc+Q$  
o+6^|RP  
SortUtil.swap(data,pivotIndex,j); ?L ~=Z\H  
)=SYJ-ta<  
file://partition }X W#?l  
l=i-1; @zVBn~=i  
r=j; "8C(_z+]K`  
do{ k*UR# z(I  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F~uA-g  
SortUtil.swap(data,l,r); %l]rQjV-  
} `)gkkZ$)j  
while(l SortUtil.swap(data,l,r); !]jNVg  
SortUtil.swap(data,l,j); * zJiii  
3<1HqU  
if((l-i)>THRESHOLD){ R;Ix<y{U  
stack[++top]=i; Hhce:E@K  
stack[++top]=l-1; C>(M+qXL+  
} *Tlws  
if((j-l)>THRESHOLD){ )MX1776kU  
stack[++top]=l+1; ?-6x]l=]  
stack[++top]=j; 0I ND9h. %  
} *M**h-p2'  
\Vhp B   
} ah&plaVzC  
file://new InsertSort().sort(data); "351s3ff  
insertSort(data); ]a Ma*fF  
} ~]t2?SqNm  
/** BzG!Rg|J  
* @param data `- uZv  
*/ (^@;`8Dy8  
private void insertSort(int[] data) { uBL~AC3>O  
int temp; xr7<(:d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :O @,Z_"  
} X:} 5L> '  
} SJ|.% gn  
} 5IF~]5s  
BX)cV  
} 6[Pr<4J  
%_X[{(  
归并排序: =w>>7u$4  
4@V<Suw  
package org.rut.util.algorithm.support; B #V 4  
m#}{"d&J  
import org.rut.util.algorithm.SortUtil; GT`<jzAiQ  
0T{Y_IG  
/** n*8RYm)?  
* @author treeroot gQzJ2LU(  
* @since 2006-2-2 0_xcrM  
* @version 1.0 bU +eJU_%  
*/ J;]@?(  
public class MergeSort implements SortUtil.Sort{ NB6h/0*v  
#L*@~M^]  
/* (non-Javadoc) %cjGeS6}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KL_}:O68  
*/ AZ Lt'9UD  
public void sort(int[] data) { V/[,1W[B  
int[] temp=new int[data.length]; B[m{2XzGH  
mergeSort(data,temp,0,data.length-1); f`";Q/rG  
} moM&2rgdrQ  
_/w-gL{  
private void mergeSort(int[] data,int[] temp,int l,int r){ b+#~N>|  
int mid=(l+r)/2; @^4M~F%  
if(l==r) return ; k~EPVJh"  
mergeSort(data,temp,l,mid); M&\?)yG  
mergeSort(data,temp,mid+1,r); 8J(zWV7 r  
for(int i=l;i<=r;i++){ #di_V"  
temp=data; ?~y(--.t;T  
} Cot\i\]jv  
int i1=l; g1!L. On  
int i2=mid+1; 9p'J(`  
for(int cur=l;cur<=r;cur++){ ny? m&;^r:  
if(i1==mid+1) IF?B`TmZ  
data[cur]=temp[i2++]; r#Oz0=0u  
else if(i2>r) DO,&Foh\  
data[cur]=temp[i1++]; S/:QVs  
else if(temp[i1] data[cur]=temp[i1++]; e ~,'|~ C5  
else  eJ\j{-  
data[cur]=temp[i2++]; `j"G=%e3.  
} Y,Zv0-"  
} EYD{8Fw-  
fvfVBk#  
} o 0 #]EMr  
U$JIF/MO_  
改进后的归并排序: WsDe0F  
>\x 39B  
package org.rut.util.algorithm.support; ]SR`96vG  
"^e?E:( 3  
import org.rut.util.algorithm.SortUtil; h}<ZZ  
M[N.H9  
/** t4c#' y  
* @author treeroot imq(3?  
* @since 2006-2-2 =]mx"0i[  
* @version 1.0 =sVt8FWGY  
*/ Ck a]F2,  
public class ImprovedMergeSort implements SortUtil.Sort { c89vx 9  
L;t~rW!1  
private static final int THRESHOLD = 10; [cAg'R6  
k_^/   
/* _5`S)G{  
* (non-Javadoc) %~(i[Ur;  
* /<(ik&%N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O,Gn2Do  
*/ v23Uh2[@Yy  
public void sort(int[] data) { 0!\q  
int[] temp=new int[data.length]; 7Cp_ 41._  
mergeSort(data,temp,0,data.length-1); FAl6  
} u9~J1s<e  
__%E!*m"<_  
private void mergeSort(int[] data, int[] temp, int l, int r) { \k-juF80  
int i, j, k; iC2nHZ*,  
int mid = (l + r) / 2; z(68^-V=:  
if (l == r) Ui;s.f  
return; 5&Kn #  
if ((mid - l) >= THRESHOLD) ho$%7mc  
mergeSort(data, temp, l, mid); G QBN-Qv  
else jz:c)C&/  
insertSort(data, l, mid - l + 1); ,T[ +omo  
if ((r - mid) > THRESHOLD) 8J U~Q  
mergeSort(data, temp, mid + 1, r); ?t P/VL  
else ''07Km@x  
insertSort(data, mid + 1, r - mid); -{SiK  
B;je|M!d  
for (i = l; i <= mid; i++) { X_@@v|UF  
temp = data; ?Gw89r  
} <&Xq`i/(  
for (j = 1; j <= r - mid; j++) { R*C+Yk)Tkt  
temp[r - j + 1] = data[j + mid]; Dx)XC?'xO  
} 'Rw] C[  
int a = temp[l]; m6<0 hP  
int b = temp[r]; -s "$I:v  
for (i = l, j = r, k = l; k <= r; k++) { xmx;tq  
if (a < b) { VjM uU"++@  
data[k] = temp[i++]; 4ux5G`oL  
a = temp; <t@*[Aw  
} else { ID+k`nP  
data[k] = temp[j--]; Mwk_S Cy  
b = temp[j]; +Z]%@"S?  
} CxQ,yd;>  
} Khd,|pM  
}  Bz~h-  
s\R?@  
/** t+q`h3  
* @param data E1g$WhXIS  
* @param l 1\{F.v  
* @param i X0TGJ,yW(  
*/ gi >{`.]  
private void insertSort(int[] data, int start, int len) { aC 0Jfo  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =upP3rw  
} b<7 qmg3  
} .w)t<7 y  
} %;?3A#  
} Z`t?kXDNoI  
1=.kH[R  
堆排序: 0E1)&f  
+[9"M+4-  
package org.rut.util.algorithm.support; XLxr~Yo  
S,%HW87  
import org.rut.util.algorithm.SortUtil; *4y r7~S5  
tpK4 gjf  
/** #ySx$WT;  
* @author treeroot Z+7S,M  
* @since 2006-2-2 [.,6~=}vP  
* @version 1.0 -y<uAI g  
*/ 4gENV{ L  
public class HeapSort implements SortUtil.Sort{ x0GZ2*vfsb  
bf(&N-"A  
/* (non-Javadoc) tYa8I/HpT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0MPDD%TP  
*/ ;d40:q<  
public void sort(int[] data) { zt0 zKXw  
MaxHeap h=new MaxHeap(); DboqFh#]=h  
h.init(data); $@wkQ%  
for(int i=0;i h.remove(); fh<G& E8 p  
System.arraycopy(h.queue,1,data,0,data.length); *[n^6)  
} a-y5\x  
`_i-BdW  
private static class MaxHeap{ JY16|ia  
`_`,XkpzCJ  
void init(int[] data){ ic#drpl,  
this.queue=new int[data.length+1]; N/VIP0Kb  
for(int i=0;i queue[++size]=data; &pz8vWCk  
fixUp(size); ZeZwzH)BD  
} =T]OYk  
} ")OLmkC  
$ 1ZY Vw  
private int size=0; $n"Llw&)  
L+L9)8FJ  
private int[] queue; 06$9Uz9  
P0=F9`3wb  
public int get() { 9n7d "XD2  
return queue[1]; 0<9TyN6  
} B"v=Fr[  
[4e5(!e  
public void remove() { 8 Hn{CJ~'  
SortUtil.swap(queue,1,size--); Q<pM tW  
fixDown(1); H"l'E9k.&p  
} a{W-+t   
file://fixdown qT4s* kqr  
private void fixDown(int k) { 4{KsCd)  
int j; p%-9T>og  
while ((j = k << 1) <= size) { ?da3Azp  
if (j < size %26amp;%26amp; queue[j] j++; L')zuI  
if (queue[k]>queue[j]) file://不用交换 <9~qAq7^  
break; aJ5R0Y,  
SortUtil.swap(queue,j,k); %ZK}y{u\  
k = j; =qRVKz  
} P'8 E8_M}  
} Xk$lQMwZ  
private void fixUp(int k) { .w~USJ=X  
while (k > 1) { )EoG@:[  
int j = k >> 1; BR'|hG  
if (queue[j]>queue[k]) ~7 Tz Ub  
break; u+_#qk0NfK  
SortUtil.swap(queue,j,k); *$!LRmp?  
k = j; '\Ub*m((1O  
} Qp ,l>k  
} TfPx   
MR}\fw$(.  
} |=POV]K  
;l'I. j  
} o[ 6hUX0tN  
l ;uEw  
SortUtil: d9(FwmE  
zBbTj IFQ  
package org.rut.util.algorithm; ?*4zNhL  
w3@ te\  
import org.rut.util.algorithm.support.BubbleSort; x-<dJ}`  
import org.rut.util.algorithm.support.HeapSort; qJ@?[|2R  
import org.rut.util.algorithm.support.ImprovedMergeSort; $H^6I8>  
import org.rut.util.algorithm.support.ImprovedQuickSort; sq_:U_tJ  
import org.rut.util.algorithm.support.InsertSort; pP @#|T  
import org.rut.util.algorithm.support.MergeSort; d\v _!7  
import org.rut.util.algorithm.support.QuickSort; r!S iR(  
import org.rut.util.algorithm.support.SelectionSort; o2~x'*A0I  
import org.rut.util.algorithm.support.ShellSort; Gm. hBNgp  
(`xc3-,  
/** 7}Sw(g)o7  
* @author treeroot Q$%@.@  
* @since 2006-2-2 c.fj[U|j  
* @version 1.0 "{k3~epYaN  
*/ 9M<? *8)  
public class SortUtil { VsC]z, oV  
public final static int INSERT = 1; <Yc:,CU  
public final static int BUBBLE = 2; zP9 !fA  
public final static int SELECTION = 3; X$* 'D)  
public final static int SHELL = 4; -AX3Rnv^!  
public final static int QUICK = 5; nTAsy0p]  
public final static int IMPROVED_QUICK = 6; 2Y+*vNs3  
public final static int MERGE = 7; 'Khq!pC   
public final static int IMPROVED_MERGE = 8; 9\8""-  
public final static int HEAP = 9; { at; U@o  
/y0 )r.R  
public static void sort(int[] data) { fp7Qb $-A  
sort(data, IMPROVED_QUICK); [>-k(D5D  
} $spf=t"nh  
private static String[] name={ XP7A.I#q0  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" yS*PS='P  
}; ",}VB8K  
)nY/ RO  
private static Sort[] impl=new Sort[]{ /dfZ>k8  
new InsertSort(), }DSz_^  
new BubbleSort(), EVf'1^f  
new SelectionSort(), ciTQH (G  
new ShellSort(), sqw _c{9  
new QuickSort(), lwU&jo*@  
new ImprovedQuickSort(), =N=,;<6%A  
new MergeSort(), G<-.{Gx)  
new ImprovedMergeSort(), Z8 T{Xw6%  
new HeapSort() 0pR04"`;  
}; gvC2\k{  
-4Xr5j%o  
public static String toString(int algorithm){  lcr=^  
return name[algorithm-1]; )oj`K,#  
} Cn,jLy  
=8iM,Vl3  
public static void sort(int[] data, int algorithm) { !rWib` %  
impl[algorithm-1].sort(data); /Hx\ gtV  
} U2aE:$oeYi  
BXdT;b"J(  
public static interface Sort { %VMazlM15  
public void sort(int[] data); C?O{l%0  
} E8xXr>j>#  
U0rz 4fxc  
public static void swap(int[] data, int i, int j) { &^<94l  
int temp = data; I$Z"o9"  
data = data[j]; >eC^]#c  
data[j] = temp; bfJDF(=h  
} ZD,l 2DQ?  
} 8[DD=[&  
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