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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。 qI-q%]l  
插入排序: M>H4bU(  
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package org.rut.util.algorithm.support; xlQl1lOX  
bo^d!/ ;  
import org.rut.util.algorithm.SortUtil; }1<_  
/** 2,.%]U  
* @author treeroot '\yp}r'u  
* @since 2006-2-2 0Y7b$~n'Y  
* @version 1.0 Xq"@Z  
*/ B^'Uh+Y  
public class InsertSort implements SortUtil.Sort{ uYW9kw>$  
3,qq\gxB  
/* (non-Javadoc) ^zjQ(ca@"x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0@;kD]Z  
*/ Z Z1s}TG  
public void sort(int[] data) { -&87nR(eW  
int temp; VT.BHZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gt{'` P,&9  
} mIu-  
} 9y/gWE  
} 1]eh0H  
4h:R+o ^H^  
} Yv0;UKd  
qkX}pQkG)h  
冒泡排序: DtBIDU]  
}q0lbwYlb  
package org.rut.util.algorithm.support; f@@2@# 5B  
e jY|o Bj  
import org.rut.util.algorithm.SortUtil; Efo,5  
qucw%hJr  
/** $.Fti-5  
* @author treeroot PVBf'  
* @since 2006-2-2 y?BzZ16\bL  
* @version 1.0 u+7B-l=u*  
*/ YLc 2:9  
public class BubbleSort implements SortUtil.Sort{ ,/ V'(\>  
EA )28]Y.  
/* (non-Javadoc) v` 9^?Xw)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J)6A,:wt  
*/ w3j51v` 0'  
public void sort(int[] data) { Z,~"`9>Ss  
int temp; IEb"tsel  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K*&?+_v :  
if(data[j] SortUtil.swap(data,j,j-1); F^iv1b  
} gemjLuf  
} RfPRCIo  
} :v/6k  
} ![H!Y W'  
{,r7dxI)`  
} .;gK*`G2W)  
gR `:)>  
选择排序: IT \Pj_  
oYWcX9R  
package org.rut.util.algorithm.support; [.e Y xZ{=  
:sT\-MpQvn  
import org.rut.util.algorithm.SortUtil; <,S0C\la=  
!*8x>,/>  
/** s }P-4Sg  
* @author treeroot A=X2zm>9  
* @since 2006-2-2 .hh 2II  
* @version 1.0 Up|\&2_  
*/ I0\}S [+ H  
public class SelectionSort implements SortUtil.Sort { -"L)<J@gQ?  
D7Y5q*F  
/* "Fv6u]Rv  
* (non-Javadoc) X8T7(w<0%f  
* B"O5P>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FrSeR9b  
*/ [ e4)"A"  
public void sort(int[] data) { !x9j~D'C`  
int temp; )N QtjB$  
for (int i = 0; i < data.length; i++) { [,_M@g3  
int lowIndex = i; :j/PtNT@  
for (int j = data.length - 1; j > i; j--) { C7=Q!UK`\  
if (data[j] < data[lowIndex]) { M4a- +T"  
lowIndex = j; bTzVmqGY  
} s)]Z*#ZZ  
} M,[u}Rf^w  
SortUtil.swap(data,i,lowIndex); (]BZ8GOx  
} <@C Bc:j0  
} 9E{Bn#  
^&t(O1.-  
} I>b-w;cC  
+NRn>1]  
Shell排序: W%]sI n  
6p/gvpZ  
package org.rut.util.algorithm.support; x{io*sY-  
x>Ah4a d  
import org.rut.util.algorithm.SortUtil; \K 01 F  
4+mawyM  
/** b~ ?TDm7  
* @author treeroot R6 w K'  
* @since 2006-2-2 2aUz.k8o  
* @version 1.0 :)nn/[>fC  
*/ zO>N3pMv  
public class ShellSort implements SortUtil.Sort{ eafy5vN[zX  
t#|E.G:=  
/* (non-Javadoc) G)l[\6Dn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qx5X2@-;:  
*/ pj,.RcH@o  
public void sort(int[] data) { tkdhT8_  
for(int i=data.length/2;i>2;i/=2){ `4s5yNUi=  
for(int j=0;j insertSort(data,j,i); {+[~;ISL  
} 3nBbPP_  
} ~MY7Ic%  
insertSort(data,0,1); 5|1&s3/f  
} Yfy6o6*:  
8xmw-s)  
/** #&">x7?5  
* @param data $P]% Px!x  
* @param j HSx~Fs^J  
* @param i c1/G yq  
*/ kP%W:4l0  
private void insertSort(int[] data, int start, int inc) { ua:.97~Ym  
int temp; CGg:e:4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |6B:tw/.  
} 32:,g4!~6  
} < W,k$|w  
} w;Qo9=-  
qce#  
} 8 Oeg"d  
TMG:fg&E~  
快速排序: eEJ8j_G  
# RJy  
package org.rut.util.algorithm.support; L&ws[8-  
X.s? =6}g  
import org.rut.util.algorithm.SortUtil; (?R  
~U8#Iq1  
/** ;-=y}DK  
* @author treeroot }Iub{30mp  
* @since 2006-2-2 8BNsh[+  
* @version 1.0 ^Gv<Xl  
*/ sVkR7 ^KsG  
public class QuickSort implements SortUtil.Sort{ XrC{{K  
"<6pp4*I  
/* (non-Javadoc) [RD ^@~x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !gy'_Y  
*/ Hi|2z5=V  
public void sort(int[] data) { <Xy8}Z`s  
quickSort(data,0,data.length-1); oAWk<B(@  
} QAi(uL5   
private void quickSort(int[] data,int i,int j){ [ H>MeeR  
int pivotIndex=(i+j)/2; |f8by\Q86=  
file://swap |]A{8BBC  
SortUtil.swap(data,pivotIndex,j); ao{>.b  
P; }Z 3!  
int k=partition(data,i-1,j,data[j]); RYE::[O7  
SortUtil.swap(data,k,j); $},:z]%D  
if((k-i)>1) quickSort(data,i,k-1); TFxb\  
if((j-k)>1) quickSort(data,k+1,j); T9Vyj3!i_  
QY+#Vp<`  
} #2ZXYH}  
/** 0&/1{Dk*n  
* @param data z9HQFRbo[  
* @param i `1EBnL_1  
* @param j 1`O`!plD+  
* @return 46_<v=YSJ  
*/ c7s4 g-  
private int partition(int[] data, int l, int r,int pivot) { LEhku4U.  
do{ PR|Trnd&D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z55,S=i  
SortUtil.swap(data,l,r); lha )'   
} Ef,@}S  
while(l SortUtil.swap(data,l,r); &;)~bS(   
return l; r %0  
} U_}$QW0'  
42 p6l   
} ?RpT_u  
#C+Gk4"w  
改进后的快速排序: A</[Q>8  
%hrv~=  
package org.rut.util.algorithm.support; Qb|w\xT^Y  
$:u,6|QsS=  
import org.rut.util.algorithm.SortUtil; YfMe69/0I  
hQL9 Zl~  
/** puqLXDjA/  
* @author treeroot :VN<,1s9p^  
* @since 2006-2-2 Od&M^;BQ  
* @version 1.0 WKah$l  
*/ nNhN:?  
public class ImprovedQuickSort implements SortUtil.Sort { 8~HC0o\2  
b V9Z[[\  
private static int MAX_STACK_SIZE=4096; Y sr{1!K  
private static int THRESHOLD=10; ys#M* {?  
/* (non-Javadoc) eaX`S.!jR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X3W)c&Pr  
*/ @1]<LQ\\  
public void sort(int[] data) { \=N tbBL$[  
int[] stack=new int[MAX_STACK_SIZE]; {6%uNT>|  
J$e.$ah;  
int top=-1; W77JXD93  
int pivot; s=%HTfw  
int pivotIndex,l,r; p,tB  
x *qef_Hu  
stack[++top]=0; xh-[]Jz(  
stack[++top]=data.length-1; s`#hk^{  
:/~vaCZ  
while(top>0){ w:Lu  
int j=stack[top--]; _23sIUN c3  
int i=stack[top--]; "~V}MPt  
B4|`Z'U#;  
pivotIndex=(i+j)/2; Q|ik\  
pivot=data[pivotIndex]; UkqLLzL  
2#(7,o}Y5  
SortUtil.swap(data,pivotIndex,j); mCz6&  
0H>Fyl2_  
file://partition 7_K(x mK  
l=i-1; ^1~/FU  
r=j; pM46I"  
do{ Q ,;x;QR4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); N\uQ-XOi  
SortUtil.swap(data,l,r); ~HYP:6f  
} rqF PUp  
while(l SortUtil.swap(data,l,r); \s+MHa&  
SortUtil.swap(data,l,j); ?ft_  
~zm/n,Epb  
if((l-i)>THRESHOLD){ &)X<yd0  
stack[++top]=i; <rC#1wR4  
stack[++top]=l-1; 4X\*kF%  
}  ]Ea7b  
if((j-l)>THRESHOLD){ z=K5~nU  
stack[++top]=l+1; i*^K)SI8  
stack[++top]=j; ^m+W  
} ,gOQI S56  
J,D{dYLDD  
} &U=f,9H  
file://new InsertSort().sort(data); YAPD7hA  
insertSort(data); /GXO2zO  
} 0l:5hD,)F  
/** eXOFAd]>u  
* @param data (C3d<a\:  
*/ (D l"s`UH~  
private void insertSort(int[] data) { 4z*_,@OA  
int temp; @[FFYVru  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UpIf t=@P  
} A0]o/IBz  
} Tb)x8-0  
} OK)0no=OAK  
X,fTzkGj  
} IWWFl6$-  
kdHql>0  
归并排序: L|Ydd!m  
sN g"JQ  
package org.rut.util.algorithm.support; ZH}NlEn  
A;|DQR()  
import org.rut.util.algorithm.SortUtil; uLCU3nI  
u!-eP7;7  
/** 0*AlLwO  
* @author treeroot |M?HdxPa  
* @since 2006-2-2 @\h(s#sn  
* @version 1.0 3LxJ}>]TO  
*/ }O>Zu[8a  
public class MergeSort implements SortUtil.Sort{ z8!u6odu %  
_@p|A  
/* (non-Javadoc) C C09:L?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eLTNnz  
*/ YiJu48J  
public void sort(int[] data) { Q&#:M>!|  
int[] temp=new int[data.length]; Yq Fzbm{\  
mergeSort(data,temp,0,data.length-1); d5=xOEv; :  
} 6wd]X-G++  
- Q@d  
private void mergeSort(int[] data,int[] temp,int l,int r){ :$tW9*\KY  
int mid=(l+r)/2; "n e'iJf_(  
if(l==r) return ; *]eZ Y  
mergeSort(data,temp,l,mid); q kKABow  
mergeSort(data,temp,mid+1,r); TkBBHg;  
for(int i=l;i<=r;i++){ y2U:( H:l!  
temp=data; kb:C>Y8!sC  
} bn`zI~WS  
int i1=l; c[y8"M5  
int i2=mid+1; 1v4kN -  
for(int cur=l;cur<=r;cur++){ bGJUu#  
if(i1==mid+1) 5QSmim  
data[cur]=temp[i2++]; @j (jOe  
else if(i2>r) :kVV.a#g  
data[cur]=temp[i1++]; nGbrWu]w  
else if(temp[i1] data[cur]=temp[i1++]; )QE_+H}p  
else (J4utw Z  
data[cur]=temp[i2++]; YXtGuO\q  
} d<Os TA  
} !LJ.L?9qw  
:=Q|gRTL*  
} +)@>60y  
9y5 \4&v  
改进后的归并排序: p~.@8r(  
<e^/hR4O  
package org.rut.util.algorithm.support; DPwSg\*)  
KR}0(,Y  
import org.rut.util.algorithm.SortUtil; 'O`3FI  
$Y`aS^IW  
/** U. aa iX7  
* @author treeroot o.5j@ dr  
* @since 2006-2-2 Tpukz_F  
* @version 1.0 /wTf&_"mTL  
*/ Wj:QC<5 v  
public class ImprovedMergeSort implements SortUtil.Sort { a  98  
(<l2 ^H  
private static final int THRESHOLD = 10; v'!Nt k  
?lK!OyCkc  
/* h9I )<_}R  
* (non-Javadoc) X*"K g  
* 3CE8+PnT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g5Dx9d{  
*/ -T?IkL)  
public void sort(int[] data) { PNKT\yd  
int[] temp=new int[data.length]; Oi0;.< kX  
mergeSort(data,temp,0,data.length-1); JY2 F-0t)  
} j''Iai_  
VTWE-:r  
private void mergeSort(int[] data, int[] temp, int l, int r) { `0i3"06lr  
int i, j, k; h)rf6*hw  
int mid = (l + r) / 2; i6d$/ yP"  
if (l == r)  9+QrTO  
return; hU 7fZl%yl  
if ((mid - l) >= THRESHOLD) ]M(mq`K  
mergeSort(data, temp, l, mid); sZ"U=6R  
else *d@Hnu"q  
insertSort(data, l, mid - l + 1); /[? F1Q  
if ((r - mid) > THRESHOLD) ~vGtNMQg  
mergeSort(data, temp, mid + 1, r); `z_7[$\~  
else &HK s >  
insertSort(data, mid + 1, r - mid); !C#RW=h9  
C._sgO  
for (i = l; i <= mid; i++) { eeU$uR  
temp = data; @MB _gt)7?  
} _vdxxhJ=P3  
for (j = 1; j <= r - mid; j++) { ik *)j  
temp[r - j + 1] = data[j + mid]; 0Qp'}_  
} ,)$KS*f"*z  
int a = temp[l]; 38rZ`O*D  
int b = temp[r]; 5|CiwQg|,p  
for (i = l, j = r, k = l; k <= r; k++) { 3\n{,Q  
if (a < b) { 1fFb 7n~3  
data[k] = temp[i++]; b 0b9#9x  
a = temp; yCIgxPv|7  
} else { L~{Vt~H9"  
data[k] = temp[j--]; Qe$>Jv5  
b = temp[j]; k |3(dXLG  
} o#P3lz  
} B  bw1k  
} SECQVA_y`  
5TneuGD  
/** 1[BvHOI2  
* @param data g>xUS_d>  
* @param l '$XHRS/q]  
* @param i R.H\b!  
*/ *+j{9LK  
private void insertSort(int[] data, int start, int len) { 2A}uqaF  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =>0M3 Qh{  
} SMO%sZ]  
} 2 dD<]  
} 0?us]lx  
} r?nV Sb|[  
'UVv(-  
堆排序: @CU|3Qg  
4spaw?j  
package org.rut.util.algorithm.support; nRB>[lG  
4 l}M i  
import org.rut.util.algorithm.SortUtil; BZ+ mO  
As~p1%nok  
/** Ws*PMK.0  
* @author treeroot Rca Os  
* @since 2006-2-2 \678Nx  
* @version 1.0 e( o/we{  
*/ R96o8#7Uv  
public class HeapSort implements SortUtil.Sort{ IR dz(~CP  
z8(R.TB  
/* (non-Javadoc) y)/$ge _U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) };m7FO  
*/ NhoS7 y(  
public void sort(int[] data) { fuD1U}c  
MaxHeap h=new MaxHeap(); .Spi$>v  
h.init(data); QHzX 5$IM  
for(int i=0;i h.remove(); xbrmPGpW$  
System.arraycopy(h.queue,1,data,0,data.length); {vT55i<mk  
} ab aQJ|  
DV[ Jbl:)  
private static class MaxHeap{ @`;Y/',  
Pkx(M E  
void init(int[] data){ {,f!'i&b@  
this.queue=new int[data.length+1]; :.S41S   
for(int i=0;i queue[++size]=data; \+Rwm:lI  
fixUp(size); qi SEnRG.  
} Gr#rM/AfCK  
} ZC5Yve8  
^s@*ISY  
private int size=0; :uwRuPI  
mrhp)yF  
private int[] queue; @ oz&  
22/?JWL>  
public int get() { 9j?hF$L"  
return queue[1]; bj7MzlGFy  
} ]EM)_:tRf  
+:"6`um|  
public void remove() { {1@4}R4  
SortUtil.swap(queue,1,size--); 3 2 1={\X  
fixDown(1); 2Ph7qEBQ22  
} a4jnu:e  
file://fixdown '!fFI1s  
private void fixDown(int k) { LA+$_U"Jk  
int j; 6PJJ?}P^1  
while ((j = k << 1) <= size) { "_1-IE  
if (j < size %26amp;%26amp; queue[j] j++; )qyx|D  
if (queue[k]>queue[j]) file://不用交换 $uUb$8 Bu  
break; moVa'1ul  
SortUtil.swap(queue,j,k); g;-+7ViIr  
k = j; G{f`K^  
} XJJ[F|k~  
} I^M#[xA  
private void fixUp(int k) { }r~v,KDb  
while (k > 1) { ll(e,9.D  
int j = k >> 1; #U$YZ#B  
if (queue[j]>queue[k]) X&9^&U=e  
break; b>bgUDq  
SortUtil.swap(queue,j,k); uq|vNLW26  
k = j; Lov.E3S6;  
} %89" A'g  
} P )t]bS  
$&=4.7Yt  
} z^P* :  
UU.mdSL  
} *CH!<VB/  
Lz9$,Y[  
SortUtil: o0aO0Y  
*X=@yB*aK  
package org.rut.util.algorithm; L,L ~ .E  
)4!CR/ao  
import org.rut.util.algorithm.support.BubbleSort; 0H OoKh  
import org.rut.util.algorithm.support.HeapSort; Ko$ $dkSE  
import org.rut.util.algorithm.support.ImprovedMergeSort; *h*j%  
import org.rut.util.algorithm.support.ImprovedQuickSort; C,|nmlDN  
import org.rut.util.algorithm.support.InsertSort; &h7smZO5j  
import org.rut.util.algorithm.support.MergeSort; _@#uIOcE  
import org.rut.util.algorithm.support.QuickSort; _OJ0 < {E  
import org.rut.util.algorithm.support.SelectionSort; '<?v:pb9  
import org.rut.util.algorithm.support.ShellSort; ]^*_F  
QH7V_#6bKP  
/** bl" (<TM  
* @author treeroot 9<t9a f\.>  
* @since 2006-2-2 J|gdO+  
* @version 1.0 Ei{(  
*/ a%Z4_ToLZ  
public class SortUtil { VQy 9Y  
public final static int INSERT = 1; M.xhVgFf)  
public final static int BUBBLE = 2; Hi; K"H]x1  
public final static int SELECTION = 3; OX)#F'Sl}  
public final static int SHELL = 4; lBlSNDs  
public final static int QUICK = 5; xta}4:d-Y  
public final static int IMPROVED_QUICK = 6; ~t{D5#LVHa  
public final static int MERGE = 7; 9{)Z5%Kz  
public final static int IMPROVED_MERGE = 8; c$,c`H(~  
public final static int HEAP = 9; 6\,DnO   
6[+\CS7Lt  
public static void sort(int[] data) { <CZI7]PM7  
sort(data, IMPROVED_QUICK); :LZ-da"QR  
} f$1Gu  
private static String[] name={ CN\|_y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K/f>f;c  
}; FF%\g J  
OwG6i|q  
private static Sort[] impl=new Sort[]{ v%H"_T  
new InsertSort(), Jh37pI  
new BubbleSort(), vF9*tK'   
new SelectionSort(), n9]IBIthe  
new ShellSort(), <O \tC81  
new QuickSort(), 6Gs{nFw  
new ImprovedQuickSort(), =7 Jy  
new MergeSort(), pT("2:)x  
new ImprovedMergeSort(), V*6l6-y~Ih  
new HeapSort() l;XU#6{  
}; .abyYVrN4?  
/hm84La  
public static String toString(int algorithm){ u:_sTfKm&  
return name[algorithm-1]; 'ox0o:  
} [kPD`be2#  
QuSV&>T\  
public static void sort(int[] data, int algorithm) { &_"ORqn&  
impl[algorithm-1].sort(data); SX1X< 9  
} o2;(VSKhS  
|RR"'o_E  
public static interface Sort { ~hS3*\^~M  
public void sort(int[] data); SQh+5  
} :d;[DYFLxb  
69t7=r  
public static void swap(int[] data, int i, int j) { F;IP3tD  
int temp = data; mSU@UD|'  
data = data[j]; >%9^%p^  
data[j] = temp; J?._/RL8-  
} qq OxTG]  
} fA"<MslKLK  
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