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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。 kq xX!  
插入排序: fbgq+f`\  
NZ`Mq  
package org.rut.util.algorithm.support; g b:)t }|  
>T: Yp<  
import org.rut.util.algorithm.SortUtil; %P05k  
/** iU]py  
* @author treeroot s wgn( -  
* @since 2006-2-2 G$FNofQx  
* @version 1.0 i]oSVXx4WC  
*/ QbA+\  
public class InsertSort implements SortUtil.Sort{ )xwWig.  
ozv:$>v@"  
/* (non-Javadoc) vF,\{sgW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g|L" |Q  
*/ J}a 8N.S  
public void sort(int[] data) { 46^LPC"x  
int temp; DWT4D)C,U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OJ0Dw*K<  
} 2O}UVp>  
} $C@v  
} 1xAZ0X#  
lrQ +G@#  
} PO9<g% qTf  
'!Gnr[aR  
冒泡排序: qo{2 CYG\+  
QJ1_LJ4)a  
package org.rut.util.algorithm.support; u xif-5  
iX ;E"ov]  
import org.rut.util.algorithm.SortUtil; $7 1(g$6#  
^D` ARH  
/** QQ*yQ\  
* @author treeroot DY]\@<ez  
* @since 2006-2-2 d9@!se9&Z  
* @version 1.0 K& / rzs-  
*/ U)mg]o-VE  
public class BubbleSort implements SortUtil.Sort{ =fy~-FN_  
_c| aRRW  
/* (non-Javadoc) "7Qc:<ww  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O{WJi;l  
*/ tu(k"'aJ  
public void sort(int[] data) { haj\Dm  
int temp; G+Vlaa/7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ O%:EPdoU  
if(data[j] SortUtil.swap(data,j,j-1); 1%W|>M`  
} h!#!}|Q'  
} D4jf%7X!Lu  
} .CXe*Vbd  
} ~xz3- a/  
O}VI8OB(&  
} ZLK@x.=  
)'\pa2  
选择排序: @H'pvFLK?  
pMJK?- )  
package org.rut.util.algorithm.support; OG}auM4  
'&_<!Nv3  
import org.rut.util.algorithm.SortUtil; '&~A  
D#lx&J.s  
/** Nc4e,>$]&  
* @author treeroot ?FC6NEu}8  
* @since 2006-2-2 TM_ MJp  
* @version 1.0 -.#He  
*/ ("HT0 &#a  
public class SelectionSort implements SortUtil.Sort { 9H ~{2Un  
I^'U_"vB  
/* >we/#C"x  
* (non-Javadoc) 8p3pw=p  
* 8!e1T,:b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =l&A9 >\  
*/ $O|J8;"v  
public void sort(int[] data) { Rx e sK  
int temp; F,B,D^WD  
for (int i = 0; i < data.length; i++) { S(;3gQ77  
int lowIndex = i; /*B^@G|]'  
for (int j = data.length - 1; j > i; j--) { j\t"4=,n  
if (data[j] < data[lowIndex]) { +/idq  
lowIndex = j; "+^d.13+]  
} Yjo$^q  
} MguH)r` uT  
SortUtil.swap(data,i,lowIndex); +f)Nf) \q  
} rw*#ta O  
}  lZ^UAFF  
~ ;aSE  
} neC]\B[Xm  
e<|'   
Shell排序: enu",wC3  
,$ICv+7]  
package org.rut.util.algorithm.support; <{\UE~  
^%|(dMo4  
import org.rut.util.algorithm.SortUtil; !?Tu pi  
n1Ag o3NM  
/** 7QdU|1]  
* @author treeroot v5i?4?-Z  
* @since 2006-2-2 P<iS7Ys+  
* @version 1.0 a8fLj  
*/ 1zE_ SNx  
public class ShellSort implements SortUtil.Sort{ (0%0+vY  
WZ"g:Khw  
/* (non-Javadoc) aOYRenqu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VK9I#   
*/ GnbXS>  
public void sort(int[] data) { 'c#ZW| A  
for(int i=data.length/2;i>2;i/=2){ w}Q|*!?_  
for(int j=0;j insertSort(data,j,i); f#xqu +)Z  
} !" E&Tk}  
} g+ `Ie'o<  
insertSort(data,0,1); Zxw>|eKI>D  
} ldJ eja~Xl  
r1cB<-bJ#'  
/** C3`2{1  
* @param data -CW$p=y}  
* @param j X/,4hjg  
* @param i mea]m)P  
*/ Q$iGpTL  
private void insertSort(int[] data, int start, int inc) { >M7e'}0 ;  
int temp; u(KeS`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &Vi"m!Bf  
} MS Ui_|7  
} r\+AeCyb"p  
} "HR &Rf k  
{rr ED  
} ~Ra1Zc$o:  
ilv6A9/  
快速排序: DBi3 j  
5Am*1S^  
package org.rut.util.algorithm.support; $UlA_l29  
g5TXs^g  
import org.rut.util.algorithm.SortUtil; RB'12^[  
2S^xqvh  
/** ZMJ\C|S:  
* @author treeroot 1'EMYQ  
* @since 2006-2-2 n?@o:c5,r  
* @version 1.0 LV=!nF0  
*/ d87pQ3e:&  
public class QuickSort implements SortUtil.Sort{ st36xS  
/IVw}:G  
/* (non-Javadoc) ,)+O.Lf7&.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j#%*@]>Tg  
*/ g#=^U`y  
public void sort(int[] data) { 0-Xpq,0  
quickSort(data,0,data.length-1); aisX56Lc  
} ))63?_  
private void quickSort(int[] data,int i,int j){ %@(6,^3%i  
int pivotIndex=(i+j)/2; $Vp&Vc8  
file://swap hMw}[6m  
SortUtil.swap(data,pivotIndex,j); nZQZ!Vfj  
wP/rR D6  
int k=partition(data,i-1,j,data[j]); &K k+RHM  
SortUtil.swap(data,k,j); ,K7C2PV6  
if((k-i)>1) quickSort(data,i,k-1); *n?6x!A  
if((j-k)>1) quickSort(data,k+1,j); ;3'}(_n  
'dj}- Rs  
} T$%u=$E%F  
/**  6" 3!9JC  
* @param data ^~MHxF5d  
* @param i (FMGW (  
* @param j B!< {s'  
* @return -'k<2"z  
*/ nngL,-v#F  
private int partition(int[] data, int l, int r,int pivot) { L~ V 63K  
do{ DC*|tHl  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); UR-e'Z&]  
SortUtil.swap(data,l,r); u ` 9Eh;  
} D4[5}NYU  
while(l SortUtil.swap(data,l,r); I}Q3B3Byg  
return l; Fg4eIE-/M  
} Mz]LFM  
>C_! }~  
} (m3p28Q?  
F5L/7j<}  
改进后的快速排序: OR&+`P"-\  
0y'34}  
package org.rut.util.algorithm.support; y>8!qVX  
Iu0K#.s_  
import org.rut.util.algorithm.SortUtil; l%B1JGu*F  
%8 cFzyE*  
/** Tjure]wQz  
* @author treeroot *Gu Cv3|  
* @since 2006-2-2 IG +nrTY0  
* @version 1.0 }Sp MHR`  
*/ ?Pmj}f  
public class ImprovedQuickSort implements SortUtil.Sort { "_'9KBd!  
@oYq.baHX  
private static int MAX_STACK_SIZE=4096; >E"FoZM=  
private static int THRESHOLD=10; |#5JI #,vX  
/* (non-Javadoc) uK(+WA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & PHHacp  
*/ \/K>Iv'$  
public void sort(int[] data) { 40%p lNPj  
int[] stack=new int[MAX_STACK_SIZE]; 9FK:lFGD  
vR1%&(f{  
int top=-1; zZ-e2)1v  
int pivot; -lSm:O@'  
int pivotIndex,l,r; 9'//_ A,  
`-ENKr]  
stack[++top]=0; lu-VBVwR  
stack[++top]=data.length-1; 4KybN  
)IZ$R*Y{  
while(top>0){ u# =N8  
int j=stack[top--]; IRo[|&c  
int i=stack[top--]; 0]>p|m9K^<  
V^L;Nw5h  
pivotIndex=(i+j)/2; lt0(Kf g  
pivot=data[pivotIndex]; i8HSYA  
~,':PUkiV  
SortUtil.swap(data,pivotIndex,j); "P<~bw5   
&B3\;|\  
file://partition , {z$M  
l=i-1; >wcsJ {I  
r=j; F w{8MQ2  
do{ Zb2 B5( 0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eMz,DYa/G  
SortUtil.swap(data,l,r); Iob o5B  
} 7Ox vq^[  
while(l SortUtil.swap(data,l,r); wV56LW  
SortUtil.swap(data,l,j); B0Z*YsbXL  
o ]Vx6  
if((l-i)>THRESHOLD){ W97Ka}Y  
stack[++top]=i; >+oQxml6nI  
stack[++top]=l-1; Vp5qul%  
} I8^z\ef&  
if((j-l)>THRESHOLD){ j-{WPJa4\  
stack[++top]=l+1; T/ S-}|fhQ  
stack[++top]=j; ,u]kZ]  
} J_P2%b=C  
m@HU;J\I  
} XTW/3pB  
file://new InsertSort().sort(data); }3[ [ONA  
insertSort(data); bJ. ((1$  
} R4V>_\D/  
/** cW&OVNj  
* @param data Za}91z"  
*/ TS3 00F  
private void insertSort(int[] data) { k, v.U8  
int temp; l^0 <a<P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :syR4A WM  
} $g|g}>Sc  
} QT%&vq  
} IHagRldG  
W=)}=^N0  
} )SDGj;j+  
tO~H/0  
归并排序: [BV{=;iD  
SxT:k,ji  
package org.rut.util.algorithm.support; g>f(5  
;utjW1y  
import org.rut.util.algorithm.SortUtil; (\R"v^  
dd4yS}yBlR  
/** PS=crU@"H  
* @author treeroot ,sLV6DM  
* @since 2006-2-2 VJr?` eY4  
* @version 1.0 SH}O?d\Q:  
*/ Y}f%/vus  
public class MergeSort implements SortUtil.Sort{ S%%>&^5  
CB|z{(&N  
/* (non-Javadoc) j@9nX4Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l_f"}l  
*/ oN _% oc  
public void sort(int[] data) { _r,# l5~U  
int[] temp=new int[data.length]; ~kN6Hr*X  
mergeSort(data,temp,0,data.length-1); PiH#9X B  
} [|F.*06SK  
! B)Em  
private void mergeSort(int[] data,int[] temp,int l,int r){ vB.LbYyF  
int mid=(l+r)/2; =~HX/]zF  
if(l==r) return ; [;.zl1S<  
mergeSort(data,temp,l,mid); z1]RwbA?1  
mergeSort(data,temp,mid+1,r); D %5 0  
for(int i=l;i<=r;i++){ n7{c0;)$  
temp=data; {ZfTUt)-P  
} <w,aS;v6jp  
int i1=l; + qS$t  
int i2=mid+1; vk#xCggK  
for(int cur=l;cur<=r;cur++){ _wHqfj)  
if(i1==mid+1) p(x[zn+%Y  
data[cur]=temp[i2++]; fwl RwH(  
else if(i2>r) "ht2X w  
data[cur]=temp[i1++]; 7x1jpQ -  
else if(temp[i1] data[cur]=temp[i1++]; e94csTh=  
else aX  ?ON  
data[cur]=temp[i2++]; 7`WK1_rR\  
} IPT}JX'  
} xSLN  
wL%>  
} .eeM&n;c  
74Kl!A  
改进后的归并排序: j4NS5  
PqP)<d '/  
package org.rut.util.algorithm.support; myJsRb5  
7qh_URt@  
import org.rut.util.algorithm.SortUtil; %l5J  
Y8CXin h  
/** 2oq>tnYyV[  
* @author treeroot (,<?Pg7v:f  
* @since 2006-2-2 %OzxR9  
* @version 1.0 8"S0E(,mu  
*/ Ajq<=y`NzV  
public class ImprovedMergeSort implements SortUtil.Sort { )I5f`r=Ry  
a{)"KAP  
private static final int THRESHOLD = 10; 9h9Y:i*Gh5  
#~ >0Dr  
/* Y*7.3 +#  
* (non-Javadoc) ^,`yt^^A  
* OY@/18D<>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I/'jRM  
*/ "2Ye\#BU6  
public void sort(int[] data) { D%BV83S   
int[] temp=new int[data.length]; kszYbz"  
mergeSort(data,temp,0,data.length-1); Li7/pUq>}!  
} LL:B H,[  
]p$fEW g  
private void mergeSort(int[] data, int[] temp, int l, int r) { Z?^AX&F  
int i, j, k; b2:CFtH5  
int mid = (l + r) / 2; 7, O_'T &  
if (l == r) Z/2#h<zj  
return; 6t@3 a?  
if ((mid - l) >= THRESHOLD) XfY]qQP  
mergeSort(data, temp, l, mid); E7 7Au;TL  
else G2em>W_n  
insertSort(data, l, mid - l + 1); "\e9Y<  
if ((r - mid) > THRESHOLD) *VL-b8'A<  
mergeSort(data, temp, mid + 1, r); T T29 LC@  
else %3~jg  
insertSort(data, mid + 1, r - mid); N b+zP[C  
1s1$J2LX  
for (i = l; i <= mid; i++) { rVZk G,Q  
temp = data; ZgzrA&6  
} *!B,|]wq=  
for (j = 1; j <= r - mid; j++) { :]?I|.a  
temp[r - j + 1] = data[j + mid]; )C <sj   
} :x16N|z  
int a = temp[l]; |*8 J.H*r  
int b = temp[r]; `+i<:,z-gs  
for (i = l, j = r, k = l; k <= r; k++) { U${dWxC  
if (a < b) { &:Raf5G-E  
data[k] = temp[i++]; /y NU0/  
a = temp; m:K/ )v*  
} else { A2htD!3  
data[k] = temp[j--];  /pV^w  
b = temp[j]; O~igwFe  
} ;[%AeN5W  
} E?%rmdyhL!  
} mGoUF$9 k  
UF0PWpuO  
/** Z(CzU{7c  
* @param data V>z8 *28S.  
* @param l ky[FNgQ3n  
* @param i P PmE.%_  
*/ KZ&8aulP  
private void insertSort(int[] data, int start, int len) { 0~"{z >s '  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nww,y  
} y/ vE  
} hoPCbjkov  
} 2}hEBw68  
} 9D-PmSnv  
`43E-'g  
堆排序: \vpUl  
(LQ*U3J]_  
package org.rut.util.algorithm.support; [?_^Cy  
_PQQ&e)E  
import org.rut.util.algorithm.SortUtil; F DXAe-|Q  
0(HUy`]>  
/** 0riTav8  
* @author treeroot _sx]`3/86  
* @since 2006-2-2 SmC91XO  
* @version 1.0 kOeW,:&65  
*/ EtKy?]i  
public class HeapSort implements SortUtil.Sort{ M/>^_zG  
KN_3]-+B  
/* (non-Javadoc) N9idk}T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O*T(aM3r  
*/ ,D;d#fJ  
public void sort(int[] data) { +>Y2luR1  
MaxHeap h=new MaxHeap(); X`#vH8  
h.init(data); REc69Y.k  
for(int i=0;i h.remove(); THkg,*;:  
System.arraycopy(h.queue,1,data,0,data.length); }-!0d*I  
} qgDd^0  
j%Usui<DL  
private static class MaxHeap{ +<&_1% 5+  
g \&Z_  
void init(int[] data){ `l'z#\  
this.queue=new int[data.length+1]; [Vc8j&:L  
for(int i=0;i queue[++size]=data; 1Sx2c  
fixUp(size); 42~tdD  
} (HDR}!.E  
} ~"#qG6dP  
?7*.S Lt  
private int size=0; Qw}uB$S>  
V*}ft@GPD  
private int[] queue; 4ba[*R2  
Rcc9Tx(zvQ  
public int get() { fl9`Mgu  
return queue[1]; eD 4X:^@  
} Uyj6Ij_Pj)  
58V`I5_  
public void remove() { <Y:{>=  
SortUtil.swap(queue,1,size--); Nu/wjx$b  
fixDown(1); B/0Xqyu  
} +Hgil  
file://fixdown f; w\k7 #  
private void fixDown(int k) { +DU^"q=  
int j; [0qe ?aI  
while ((j = k << 1) <= size) { i}[cq_wJ  
if (j < size %26amp;%26amp; queue[j] j++; ) [+82~F  
if (queue[k]>queue[j]) file://不用交换 ";yey]  
break; u0zF::  
SortUtil.swap(queue,j,k); q HaH=g%  
k = j; :m]H?vq] \  
} OD]`oJ|  
} J}BN}|Y@2  
private void fixUp(int k) { ?I{L^j^#4  
while (k > 1) { 9sG]Q[:.]  
int j = k >> 1; xy))}c%  
if (queue[j]>queue[k]) >J*x` a3Q  
break; ct`j7[  
SortUtil.swap(queue,j,k); rP|~d}+I  
k = j; %D1 |0v8}  
} Swa0TiT(  
} Ql"kJ_F!br  
fG9 ;7KG  
} @ <(4J   
KW-GVe%8f  
} /o OZ>B%1s  
{ppzg`G\  
SortUtil: K*I!:1;3N  
/9ctmW1!<  
package org.rut.util.algorithm; U}@xMt8@l  
*IX<&u#  
import org.rut.util.algorithm.support.BubbleSort; v|\3FEu@  
import org.rut.util.algorithm.support.HeapSort; ~-R%m  
import org.rut.util.algorithm.support.ImprovedMergeSort; Rjp7H  
import org.rut.util.algorithm.support.ImprovedQuickSort; %5RR<[_/;  
import org.rut.util.algorithm.support.InsertSort; 3{$vN).  
import org.rut.util.algorithm.support.MergeSort; }`cf3'rdk  
import org.rut.util.algorithm.support.QuickSort; @,Z0u2WLl6  
import org.rut.util.algorithm.support.SelectionSort; s@Dln Du .  
import org.rut.util.algorithm.support.ShellSort; B6=?Qp/f  
V6Mt;e)C  
/** @`$'sU  
* @author treeroot J0V`sK  
* @since 2006-2-2 k/P.[5  
* @version 1.0 Y<L35 ?  
*/ L4,b ThSG  
public class SortUtil { HS[($  
public final static int INSERT = 1; Q2/65$ nW  
public final static int BUBBLE = 2; /sfJ:KP0  
public final static int SELECTION = 3; $Nd,6w*`  
public final static int SHELL = 4; ?iZ2sRWR6  
public final static int QUICK = 5; mG"xo^1_H  
public final static int IMPROVED_QUICK = 6; %UAF~2]g  
public final static int MERGE = 7; m _cRK}>  
public final static int IMPROVED_MERGE = 8; E\|nP~;~F9  
public final static int HEAP = 9; +F-EgF+J  
b7XB l  
public static void sort(int[] data) { 4 km^S9  
sort(data, IMPROVED_QUICK); eU\xOTl~<{  
} _ f'v>"K  
private static String[] name={ 85YUqVi9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 84vd~Cf 9  
}; aaP_^m O  
NV7k@7_{B  
private static Sort[] impl=new Sort[]{ q3AqU?f  
new InsertSort(), s1q8r!2\w  
new BubbleSort(), +D@5zq:5  
new SelectionSort(), \ ?pyax8  
new ShellSort(), tI1OmhNN  
new QuickSort(), R&9FdM3K`:  
new ImprovedQuickSort(), lD[37U!  
new MergeSort(), Fvf |m7  
new ImprovedMergeSort(), ~: {05W  
new HeapSort() Y=p!xr>  
}; h);^4cU  
M?!@L:b[  
public static String toString(int algorithm){ H1 I^Vij  
return name[algorithm-1]; y~fKLIoz"  
} w9{C"K?u=  
As<B8e]  
public static void sort(int[] data, int algorithm) { lDTHK2f  
impl[algorithm-1].sort(data); RN[I%^$"  
} .4p3~r?=S  
AH|gI2  
public static interface Sort { @^A5{qQ\  
public void sort(int[] data); # obRr#8  
} '`3#FCg  
@@)2 12  
public static void swap(int[] data, int i, int j) { 1>"-!ADm  
int temp = data; !bP%\)5  
data = data[j]; "!~o  
data[j] = temp; ,;_+o]  
} )P$|9<_q7x  
} tO&ffZP8$  
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