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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。 QRER[8]r$  
插入排序: o^BX:\}  
Vb~;"WABo  
package org.rut.util.algorithm.support; l +O\oD?-  
b28C (  
import org.rut.util.algorithm.SortUtil; AE%zqvp>  
/** 9cMMkOM J  
* @author treeroot (HeIO  
* @since 2006-2-2 P;e@<O  
* @version 1.0 {d,^tG}  
*/ Km0P)Z  
public class InsertSort implements SortUtil.Sort{ ?:RWHe.P  
rrZ'Dz  
/* (non-Javadoc) 8p~|i97W]!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  PO=A^b  
*/ 8noo^QO  
public void sort(int[] data) { xllmF)]*Y  
int temp; 75']fFO@!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;B"S*wYMN  
} hHsO?([99  
} {^K&9sz  
} SS-7y:6y>  
iP?=5j=4  
} 1ka58_^  
et6@);F  
冒泡排序: _[J>GfQd  
/6p7 k  
package org.rut.util.algorithm.support;  ~&_BT`a  
cA+O]",}  
import org.rut.util.algorithm.SortUtil; $60]RCu  
L$f:D2Ei  
/** rE.z.r"O  
* @author treeroot 6x! q  
* @since 2006-2-2 q.p.y0  
* @version 1.0 >zv}59M  
*/ &4Y@-;REt  
public class BubbleSort implements SortUtil.Sort{ [b@9V_  
n UD;y}}n  
/* (non-Javadoc) g U v`G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HQ3kxOT  
*/ +*$@ K'VL  
public void sort(int[] data) { rcjj( C  
int temp; $C6O<A  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]N1gzHaS  
if(data[j] SortUtil.swap(data,j,j-1); >2< Jb!f&  
} EA!I& mBq  
} \H.1I=<  
} &n& ndq  
} QdP)-Fx  
<(2,@_~@r  
} M'ZA(LVp  
%ZZW p%uf  
选择排序: %|By ?i  
gz"I=9  
package org.rut.util.algorithm.support; JA^Y:@<{/  
d##'0yg   
import org.rut.util.algorithm.SortUtil; 62J -)~_  
BO-=X 78f@  
/** ^2!l/(?  
* @author treeroot N >+L?C  
* @since 2006-2-2 :8Jn?E (36  
* @version 1.0 }G[Qm2k  
*/ 7_AcvsdW  
public class SelectionSort implements SortUtil.Sort { ~ny4Ay$#  
{@`Z`h" N  
/* +8q]O%B   
* (non-Javadoc) 5TcirVO82  
* ik|iAWy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z8n]6FDiE  
*/ =Ev* Q[  
public void sort(int[] data) { P/hIJV[  
int temp;  Q ,)}t  
for (int i = 0; i < data.length; i++) { ZG)%vB2c  
int lowIndex = i; /s^O M`5  
for (int j = data.length - 1; j > i; j--) { fk:oCPo  
if (data[j] < data[lowIndex]) { wr;8o*~  
lowIndex = j; F /% 5 r{  
} l+i9)Fc<i  
} EU-=\Y  
SortUtil.swap(data,i,lowIndex); TZ%u;tBH:  
} CZ_ (IT7  
} O[#pB. 4  
IH0qx_;P&  
} )]C7+{ImC  
I:%O`F  
Shell排序: Z,m;eCLG]  
S,TK;g  
package org.rut.util.algorithm.support; .jC-&(R +  
/I3>u  
import org.rut.util.algorithm.SortUtil; kkE1CHY  
7tr;adjs  
/** Z'L}x6  
* @author treeroot ~T<o?98  
* @since 2006-2-2 y%x2  
* @version 1.0 {(!j6|jK  
*/ y9L:2f\  
public class ShellSort implements SortUtil.Sort{ r(QjVLjj`k  
rN%aP-sa<  
/* (non-Javadoc) :svRn9_8H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uyITUvPg[  
*/ m;d#*}n\p  
public void sort(int[] data) { Jd>"g9  
for(int i=data.length/2;i>2;i/=2){ 6?v)Hb}J%d  
for(int j=0;j insertSort(data,j,i); s'|^6/  
} Fi^Q]9.@{  
} 3mnq=.<(w  
insertSort(data,0,1); {`vv-[j|  
} Q+UqLass  
lnoK.Vk9,  
/** ]OKs 65  
* @param data RwC1C(ZP  
* @param j #(G#O1+  
* @param i LE:nmo  
*/ F7zBm53  
private void insertSort(int[] data, int start, int inc) { REvY`   
int temp; qm1;^j&y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p%v+\T2r  
} 'rw nAr  
} sOBy)vq?\  
} wLf=a^c#  
_n;V iQMu  
} *?Sp9PixP  
jI(}CT`g  
快速排序: } 1 >i  
k )T;WCia  
package org.rut.util.algorithm.support; h)qapC5z,  
sKT GZA  
import org.rut.util.algorithm.SortUtil; )0I;+9:D=  
GX+oA]  
/**  D|[~Py  
* @author treeroot C 4 &1M  
* @since 2006-2-2 b4$-?f?V  
* @version 1.0 {b^JH2,  
*/ qh)o44/ $  
public class QuickSort implements SortUtil.Sort{ 420cJ{;A  
gUoTOA,  
/* (non-Javadoc) 4M&6q(389  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M"eiKX  
*/ wtDy-H n  
public void sort(int[] data) { C1@6 r%YD  
quickSort(data,0,data.length-1); W:^\Oe5&a  
} %usy`4 2  
private void quickSort(int[] data,int i,int j){ jz_\B(m9%  
int pivotIndex=(i+j)/2; +8 avA:o  
file://swap $DOBC@xxzT  
SortUtil.swap(data,pivotIndex,j); b{KpfbxcI  
\i-HECc"U  
int k=partition(data,i-1,j,data[j]); (@H'7,  
SortUtil.swap(data,k,j); i(XcNnn6  
if((k-i)>1) quickSort(data,i,k-1); :b&O{>M]Y  
if((j-k)>1) quickSort(data,k+1,j); 5X5&(S\  
 S oY=  
} 1} {bHj  
/** ^y,% Tv>  
* @param data 8%s_~Yc  
* @param i sILkTzs w  
* @param j "+2Hde1  
* @return u[_~ !y  
*/ (0Xgv3wd  
private int partition(int[] data, int l, int r,int pivot) { D<zgs2Ex  
do{ 3sf+ uoV  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4  |E`  
SortUtil.swap(data,l,r); P d@y+|  
} *t'q n   
while(l SortUtil.swap(data,l,r); TM8WaH   
return l; UGNFWZ c  
} rkdwGqG  
1)8;9 Ba:  
} G9.+N~GZ.  
D_%y&p?<Ls  
改进后的快速排序: %G& Zm$u=  
!Qu)JR  
package org.rut.util.algorithm.support; :_%  
iD)R*vnAi  
import org.rut.util.algorithm.SortUtil; U[1Ir92:  
ceDe!Iu  
/** H=OKm  
* @author treeroot 7dXR/i\  
* @since 2006-2-2 + j._NRXRH  
* @version 1.0 o:<g Jzg  
*/ Jb'M/iG  
public class ImprovedQuickSort implements SortUtil.Sort { smLXNO  
[.O 3z*[9#  
private static int MAX_STACK_SIZE=4096; +SGM3tY  
private static int THRESHOLD=10; 85P7I=`*d  
/* (non-Javadoc) T/#$44ub  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HF9d~7R  
*/ FTx&] QN?  
public void sort(int[] data) { }5Yd:%u5  
int[] stack=new int[MAX_STACK_SIZE]; v*+.;60_  
_e<3 g9bj  
int top=-1; 8}FZ1h2 4  
int pivot; $okGqu8z.O  
int pivotIndex,l,r; 0s"g%gq|  
ppt`5F O  
stack[++top]=0; >z*2Og#1  
stack[++top]=data.length-1; rULrGoM  
kDM\IyM<\  
while(top>0){ }VlX!/42  
int j=stack[top--]; /jdq7CF  
int i=stack[top--]; B1]dub9  
`Z*k M VN  
pivotIndex=(i+j)/2; DW ^E46k)A  
pivot=data[pivotIndex]; t =ErJ  
LEoL6ga  
SortUtil.swap(data,pivotIndex,j); #WD} XOA  
Suixk'-  
file://partition |kL^k{=zV  
l=i-1; sGjYL>*  
r=j; wXv\[z L`  
do{ \K+LKa)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /xmUu0H$R  
SortUtil.swap(data,l,r); >1[Hk0 <x  
} w:l/B '%]Y  
while(l SortUtil.swap(data,l,r); ^lCys  
SortUtil.swap(data,l,j); KS($S( Fi  
zfDx c3e  
if((l-i)>THRESHOLD){ pCOr{I\  
stack[++top]=i; =k#SQ/@  
stack[++top]=l-1; hX\z93an  
} H tIl;E  
if((j-l)>THRESHOLD){ JTw\5j  
stack[++top]=l+1; -EV_=a8[y  
stack[++top]=j; _{z.Tu  
} U$R+&@;  
'./j<2|;U  
} 9/[3xhB4  
file://new InsertSort().sort(data); |EuWzhNAO  
insertSort(data); Ur`Ri?  
} ]2kgG*^n"  
/** =vx iqRm  
* @param data [ay~l%x  
*/ }Wf\\  
private void insertSort(int[] data) { ^J3\ U{B  
int temp; (,~gY=E+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N5u.V\F!z\  
} l?:!G7ie  
} zG|}| //}  
} ;h> s=D,r  
W)I)QinOH  
} x/Pi#Xm  
v=15pW  
归并排序: (;2J}XQvO~  
]K'iCYY  
package org.rut.util.algorithm.support; "f|\":\  
*i#m5f}  
import org.rut.util.algorithm.SortUtil; 1<RB}M  
n5i#GvO^  
/** V3O<l}ak  
* @author treeroot juPW!u  
* @since 2006-2-2  PDaD:}9  
* @version 1.0 g6:S"Em  
*/ %\8E{M:  
public class MergeSort implements SortUtil.Sort{ ]J\tosTi  
(Hqy^EOZ  
/* (non-Javadoc) m\~{l=jIS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h~rSM#7m  
*/ ydOJ^Yty  
public void sort(int[] data) { j,")c'r&dD  
int[] temp=new int[data.length]; .Cfi/  
mergeSort(data,temp,0,data.length-1); %jKbRiz1u  
}  FVOR~z  
c?;~ Z  
private void mergeSort(int[] data,int[] temp,int l,int r){ [!E pv<G  
int mid=(l+r)/2; 8KKI.i8`  
if(l==r) return ; GaMiu! |,  
mergeSort(data,temp,l,mid); 9$7tB  
mergeSort(data,temp,mid+1,r); MY1 1 5%  
for(int i=l;i<=r;i++){ t(FI Bf3  
temp=data; 0q`n]NM  
} .du FMJl  
int i1=l; 4J3cQ;z  
int i2=mid+1; X_Vj&{  
for(int cur=l;cur<=r;cur++){ Op^r}7  
if(i1==mid+1) $OK}jSH*v)  
data[cur]=temp[i2++]; jRP.Je@t  
else if(i2>r) ;`IZ&m$  
data[cur]=temp[i1++]; c` ^I% i  
else if(temp[i1] data[cur]=temp[i1++]; I_s4Pf[l  
else x}I'W?g  
data[cur]=temp[i2++]; .c~`{j}  
} Z'EX q.hk  
} {VqcZhqy/l  
_JZS;8WYR  
} L1;IXCc=  
9$F '*{8  
改进后的归并排序: c}K>#{YeB  
R(Y4nw+Y-  
package org.rut.util.algorithm.support; FV|/o%XqK  
]i\C4*  
import org.rut.util.algorithm.SortUtil; Yhu 6QyRV  
9l9h*P gt  
/** ,Q~C F;qe  
* @author treeroot ^i}*$ZC72  
* @since 2006-2-2 5(kRFb'31F  
* @version 1.0 ajFSbi)l  
*/ :|i jCg+  
public class ImprovedMergeSort implements SortUtil.Sort { umV5Y`  
S EdNH.|I  
private static final int THRESHOLD = 10; bM`7>3 d7E  
|,k,X}gP  
/* z.itVQs$I  
* (non-Javadoc) qE73M5L&  
* 86(8p_&zC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -z%| Jk  
*/ _+ z5~6>  
public void sort(int[] data) { 3(|8gWQ  
int[] temp=new int[data.length]; p-QD(+@M  
mergeSort(data,temp,0,data.length-1); alM ^ X  
} -x i]~svg  
f(Jz*el S  
private void mergeSort(int[] data, int[] temp, int l, int r) { /8 /2#`3R  
int i, j, k; ptXCM[Z+  
int mid = (l + r) / 2; 1RC(T{\x  
if (l == r) u'"VbW3u n  
return; >W%tEc  
if ((mid - l) >= THRESHOLD) lqPzDdC^>  
mergeSort(data, temp, l, mid); gKK*` L~  
else )sg@HFhY'  
insertSort(data, l, mid - l + 1); j_2-  
if ((r - mid) > THRESHOLD) xf/ SUO F  
mergeSort(data, temp, mid + 1, r); f{=0-%dA  
else +/,J$(  
insertSort(data, mid + 1, r - mid); nY7 ZK  
!o A,^4(  
for (i = l; i <= mid; i++) { 7I>@PV N  
temp = data; @ %LrpD  
} 4f+R}Ee7  
for (j = 1; j <= r - mid; j++) { G?\\k[#,&  
temp[r - j + 1] = data[j + mid]; u*/.   
} ;Js-27_0  
int a = temp[l]; fg1_D  
int b = temp[r]; rap`[O|l=  
for (i = l, j = r, k = l; k <= r; k++) { 8t3,}}TJ  
if (a < b) { "0al"?  
data[k] = temp[i++]; R<>ptwy  
a = temp; }lZfZ?oAz  
} else { k`H#u,&  
data[k] = temp[j--]; v6B}ov[Y2  
b = temp[j]; Qp9)Rc5  
} G-?y;V 1  
}  +c@s  
} cTW3\S=  
t)Q6A@$:  
/** Ra%" +=  
* @param data g~EJja;  
* @param l FSnF>3kj-  
* @param i WZkAlg7Z  
*/ 0'ha!4h3Z  
private void insertSort(int[] data, int start, int len) { 9/N=7<$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Hk)IV"[R  
} w#EP`aM2$=  
} |y+<|fb,a  
} s>8;At-  
} =?Y%w%2  
CT1)tRN  
堆排序: fhCMbq4T  
a`XXz  
package org.rut.util.algorithm.support; 4,D$% .  
W10=SM}  
import org.rut.util.algorithm.SortUtil; 24u;'i-y5  
v[efM8  
/** qF9z@a  
* @author treeroot )@"iWQ 3K  
* @since 2006-2-2 . e' vc  
* @version 1.0 $ f`\TKlN  
*/ L8"0o 0-  
public class HeapSort implements SortUtil.Sort{ ]F:5-[V#  
+r0ItqkM  
/* (non-Javadoc) Z]H`s{3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rp*f)rJ  
*/ ,'~8{,h5  
public void sort(int[] data) { $GI2rzh  
MaxHeap h=new MaxHeap(); NY.Y=CF("  
h.init(data); yHS=8!  
for(int i=0;i h.remove(); tBSHMz  
System.arraycopy(h.queue,1,data,0,data.length); *uJcB|KX  
} }*4K{<02  
G,+-}~$_  
private static class MaxHeap{ # fvt:iE  
7]}n 0*fe  
void init(int[] data){ \nQV{J  
this.queue=new int[data.length+1]; l(;~9u0sa  
for(int i=0;i queue[++size]=data; {Vy2uow0  
fixUp(size); }cDw9;~D  
} laVqI|0q  
} *`]LbS  
EjZ_|Q  
private int size=0; bDh,r!I  
:q6j{C(  
private int[] queue; :Osw4u]JXd  
E yJWi<  
public int get() { Eg&oAY.U  
return queue[1]; #:E}Eby/6I  
} 0 t.'?=  
5#Z>}@/  
public void remove() { cuenDw=eC  
SortUtil.swap(queue,1,size--); Y*!J +A#  
fixDown(1); 6.X| . N  
} q/I':a[1  
file://fixdown 3C8cvi[IS  
private void fixDown(int k) { JO*}\Es  
int j; gmG M[c\  
while ((j = k << 1) <= size) { =pQ'wx|>|  
if (j < size %26amp;%26amp; queue[j] j++; Uy8r !9O  
if (queue[k]>queue[j]) file://不用交换 {FV_APL9_  
break; Ja$Ple*XU8  
SortUtil.swap(queue,j,k); k%UE^  
k = j; crx8+  
} 5X2&hG*  
} TFrZ+CcWp2  
private void fixUp(int k) { MfzSoxCb  
while (k > 1) { 3LT[?C]H$  
int j = k >> 1; Tk(ciwB  
if (queue[j]>queue[k]) ,{{e'S9cy  
break; :u}FF"j  
SortUtil.swap(queue,j,k); qo2/?]  
k = j; /%W&zd=%#  
} mJjd2a"vi  
} !U}dYB:O  
.c#G0t<i[  
} xl.iI$P  
R*m=V{iu`  
} h_O6Z2J1  
{*EA5;  
SortUtil: # tN#_<W  
Q>`|{m  
package org.rut.util.algorithm; 8t{-  
E_t ^osY&  
import org.rut.util.algorithm.support.BubbleSort; '`.bmiM  
import org.rut.util.algorithm.support.HeapSort; BT?)-wS  
import org.rut.util.algorithm.support.ImprovedMergeSort; dEz7 @T  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,yZvT7  
import org.rut.util.algorithm.support.InsertSort; xx^7  
import org.rut.util.algorithm.support.MergeSort; ^zdZ"\x  
import org.rut.util.algorithm.support.QuickSort; Z_Tu* F  
import org.rut.util.algorithm.support.SelectionSort; gQXB=ywF  
import org.rut.util.algorithm.support.ShellSort; #=>t6B4af  
XYeuYLut  
/** ^pAgo B  
* @author treeroot i+`N0!8lY  
* @since 2006-2-2 Knd2s~S  
* @version 1.0 La$*)qD,  
*/ :C%cnU;N  
public class SortUtil { 8KQD w:  
public final static int INSERT = 1; &<Gs@UX~w  
public final static int BUBBLE = 2; M oIq)5/  
public final static int SELECTION = 3; 7 (}gs?&w  
public final static int SHELL = 4; IF"-{@  
public final static int QUICK = 5; (]*otVJ  
public final static int IMPROVED_QUICK = 6; ?`jh5Kw%y  
public final static int MERGE = 7; Xbm\"g \  
public final static int IMPROVED_MERGE = 8; n*7Ytz3#'  
public final static int HEAP = 9; _FG?zE  
^Q)&lxlxpx  
public static void sort(int[] data) { ryk(Am<  
sort(data, IMPROVED_QUICK); .i^aYbB$X  
} 6xLLIby,  
private static String[] name={ '"# W!p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zUw=e}?:  
}; JqX+vRY;dd  
XeGtge/}T  
private static Sort[] impl=new Sort[]{ })zYo 7  
new InsertSort(), lwY2zX&%)/  
new BubbleSort(), t-, =sV  
new SelectionSort(), }3{ x G+,  
new ShellSort(), #q[k"x=c  
new QuickSort(), *^]lFuX\&E  
new ImprovedQuickSort(), Us5P?}  
new MergeSort(), eiiI Wr_7  
new ImprovedMergeSort(), ups] k?4  
new HeapSort() 2aROY2  
}; 4T]n64Yid  
VeLuL:4I  
public static String toString(int algorithm){ p3sR>ToJ  
return name[algorithm-1]; 6xFvu7L_c;  
} ?8{x/y:  
:E$<!q  
public static void sort(int[] data, int algorithm) { %TOYU (k  
impl[algorithm-1].sort(data);  X`REhvT  
} @wzzI 7}C  
u0Nag=cU  
public static interface Sort { H<hFA(M  
public void sort(int[] data); U{^~X_?  
} Iuh1tcc  
jB"?iC.  
public static void swap(int[] data, int i, int j) { 9ZKB,  
int temp = data; yXuc< m  
data = data[j]; epWTZV(1x  
data[j] = temp; s]D&):  
} -!p +^wC  
} W,\LdQ  
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