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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。 V\X.AGc  
插入排序: &*[T  
Z?CmD ;W  
package org.rut.util.algorithm.support; ZIkXy*<(  
|HhUU1!  
import org.rut.util.algorithm.SortUtil; yH@W6'.  
/** ~48Uch\LG:  
* @author treeroot YM/GSSq  
* @since 2006-2-2 5Y_)%u  
* @version 1.0 L%U-MOS=  
*/ ![{>f6{J  
public class InsertSort implements SortUtil.Sort{ *siS4RX2  
zD7\Gv  
/* (non-Javadoc) oG3>lqBwD2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) / ~w\Npf0  
*/ [|Jz s[  
public void sort(int[] data) { _{C:aIl[2  
int temp; 8b[ ^6]rM  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 28>gAz.#  
} E@Q+[~H}  
} W6 f*>  
} ~X*)gS-=  
PIsMx-i0  
} ]fnc.^{  
-[".km  
冒泡排序: 3a"4Fn  
al(t-3`<  
package org.rut.util.algorithm.support; w8%<O^wN,  
CAX|[  
import org.rut.util.algorithm.SortUtil; RxjC sjg  
TmvI+AY/  
/** "U4Sn'&h@  
* @author treeroot B9&"/tT  
* @since 2006-2-2 fnN"a Z  
* @version 1.0 v\'E o* 4  
*/ b(wW;C'#0p  
public class BubbleSort implements SortUtil.Sort{ 4S`2")V  
hdXdz aNS  
/* (non-Javadoc) >RG }u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V{HP8f91  
*/ ;*{y!pgb  
public void sort(int[] data) { 4nN%5c~=  
int temp; MRMsw NQ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +ng8!k  
if(data[j] SortUtil.swap(data,j,j-1); [nZ3}o  
}  W>.KV7  
} 4onRO!G,  
} 3P2H!r  
} "7(2m  
n ,!PyJ  
} 8$xd;+`y'  
F4xYfbwY"]  
选择排序: "94e-Nx  
E:a_f!  
package org.rut.util.algorithm.support; j7IX"O%f\  
\DI%/(?  
import org.rut.util.algorithm.SortUtil; dMK| l   
u 0(H!  
/** t :B~P,r  
* @author treeroot a/A$ MXZ_  
* @since 2006-2-2 'H+H4(  
* @version 1.0 b_+dNoB  
*/ Q x}\[  
public class SelectionSort implements SortUtil.Sort { _Q_"_*e  
!C]0l  
/* H`odQkZ!  
* (non-Javadoc) "xe %  IS  
* 00X~/'!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r%\(5H f  
*/ dtD)VNkBZ  
public void sort(int[] data) { FW~%xUSE5  
int temp; 96x$Xl;  
for (int i = 0; i < data.length; i++) { BQmHYar  
int lowIndex = i; dF$a52LS  
for (int j = data.length - 1; j > i; j--) { b9b384Q1O  
if (data[j] < data[lowIndex]) { Q}zAC2@L  
lowIndex = j; E_ #MQ;n  
} 2Hl0besm  
} 0~ !).f  
SortUtil.swap(data,i,lowIndex); :$4 atm  
} Qk2^p^ T6  
} /Z`("X?_Kf  
Z&BJ/qk \-  
} H&Jp,<\x  
i8t%v  
Shell排序: ^~\cx75D  
Vm\ly;v'R  
package org.rut.util.algorithm.support; =*<Cw?Gc  
r: Ij\YQ  
import org.rut.util.algorithm.SortUtil; t6m&+N  
K`}8fU   
/** www#.D%'U  
* @author treeroot =LLix . >  
* @since 2006-2-2 O)v?GQRj  
* @version 1.0 JAEn 72  
*/ ++{,1wY\  
public class ShellSort implements SortUtil.Sort{ N1dv}!/*.+  
BCUn[4Gp  
/* (non-Javadoc) ~\HGV+S!g}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .%Pt[VQ  
*/ pHO,][VZ  
public void sort(int[] data) { e0rh~@E  
for(int i=data.length/2;i>2;i/=2){ abAX)R'  
for(int j=0;j insertSort(data,j,i); F<R+]M:fa  
} )o4B^kq  
} m3Ma2jLWC  
insertSort(data,0,1); S: b-+w|*  
} MLVrL r t  
<<#j?%  
/** v>S[} du  
* @param data (tY0/s  
* @param j _6O\*|'6  
* @param i 5SOl:{A +  
*/ y+jOk6)W75  
private void insertSort(int[] data, int start, int inc) { J*I G]2'H  
int temp; 8Qm%T7]UFb  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Lt|'("($*  
} >v\t> [9t  
} 2^3N[pM;  
} L_ &`  
wgETL|3-  
} #Cy9E"lP  
^/`W0kT  
快速排序: coG_bX?e  
'=eG[#gy  
package org.rut.util.algorithm.support; 6!& DH#M  
m@A?'gD  
import org.rut.util.algorithm.SortUtil; L'A>IBrz  
N A`qC.K   
/** A3su!I2S  
* @author treeroot 4ju=5D];   
* @since 2006-2-2 R}T8cVxc  
* @version 1.0 TAE@KSPvo  
*/ _/\U  
public class QuickSort implements SortUtil.Sort{ kuX{2h*`  
8gI f  
/* (non-Javadoc) wr`+xYuuC=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .5s#JL  
*/ W08rGY  
public void sort(int[] data) { |<2g^ZK)  
quickSort(data,0,data.length-1); Lo{g0~?x*  
} <F%c"Rkh  
private void quickSort(int[] data,int i,int j){ |mS-<e8LY4  
int pivotIndex=(i+j)/2; Kn#CIFbBN  
file://swap OZ SM2~  
SortUtil.swap(data,pivotIndex,j); WL#E%6p[  
$yoIz.?V  
int k=partition(data,i-1,j,data[j]); kM JA#{<  
SortUtil.swap(data,k,j); q4xP<b^  
if((k-i)>1) quickSort(data,i,k-1); Sy0-tK4  
if((j-k)>1) quickSort(data,k+1,j); n)bbEXO  
ag* 5fBF  
} =1SG^rp  
/** @ =XJ<  
* @param data Z !81\5  
* @param i r`OC5IoQ  
* @param j t(.jJ>|+*  
* @return +qiI;C_P\  
*/ s~tZN  
private int partition(int[] data, int l, int r,int pivot) { %s;=H)8  
do{ UNO KK_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @?/>$  
SortUtil.swap(data,l,r); cAQ_/>  
} 25H=RTw  
while(l SortUtil.swap(data,l,r); W>'KE:!sp  
return l; 0Z&ua  
} mr[+\ 5  
t4H*&U  
} kBlk^=h<:w  
m2x=Qv][@c  
改进后的快速排序: n5z";:p  
&VdKL2  
package org.rut.util.algorithm.support; >V$ S\"  
=#.qe=  
import org.rut.util.algorithm.SortUtil; x T{s%wE  
6-t:eo9  
/** 87p tab@  
* @author treeroot DPM4v7 S  
* @since 2006-2-2 !S}d?8I6  
* @version 1.0 r-'CB  
*/ }c@duf-l  
public class ImprovedQuickSort implements SortUtil.Sort { bqcwZ6r<  
h~-cnAMt  
private static int MAX_STACK_SIZE=4096; $X ]t}=  
private static int THRESHOLD=10; 0 ~^l*  
/* (non-Javadoc) pp1kcrE\M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +8Q5[lh2]j  
*/ =DsFR9IB  
public void sort(int[] data) { iVZ X  
int[] stack=new int[MAX_STACK_SIZE]; qL2Sv(A Z!  
SG{&2G  
int top=-1; myqQqVW  
int pivot; Dwbt^{N ^  
int pivotIndex,l,r; Rxl/)H[Lc"  
#p7_\+&5s  
stack[++top]=0; YtFH@M  
stack[++top]=data.length-1; l % 0c{E~  
rvG0aqO `  
while(top>0){ K [R.B!;N  
int j=stack[top--]; >)8<d3m  
int i=stack[top--]; 8!|LJI  
dCO7"/IHW  
pivotIndex=(i+j)/2; Nf1&UgX  
pivot=data[pivotIndex]; fIii  
Z,:}H6Mj9  
SortUtil.swap(data,pivotIndex,j); aFd87'^  
dz,4);Mg  
file://partition 5.U4P<qS  
l=i-1; ~zc B@; :  
r=j; kPezR: 31  
do{ ofy)}/i  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Y=(%t:#_  
SortUtil.swap(data,l,r); .,&6 x.  
} VdE$ig@  
while(l SortUtil.swap(data,l,r); >fx/TSql:J  
SortUtil.swap(data,l,j); \(`,z}Ht _  
0ra+MQBg  
if((l-i)>THRESHOLD){ EE,C@d!*k7  
stack[++top]=i; |l673FcJ  
stack[++top]=l-1; QB6. o6  
} a8cX {6  
if((j-l)>THRESHOLD){ a{+;&j[!  
stack[++top]=l+1; 22gh,e2o  
stack[++top]=j; #/o1D^  
} yq,%<%+  
naiy] oY"  
} {9|S,<9  
file://new InsertSort().sort(data); sV-UY!   
insertSort(data); 0khAi|PY  
} n~'cKy )m  
/** R/ 3#(5  
* @param data UmOK7SPi  
*/ Oz4yUR  
private void insertSort(int[] data) { T~)zgu%q_  
int temp; g]m}@b6(h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *ez7Q   
} Vh8RVFi;c  
} eDL0Vw  
} .y2np  
41^ $  
} k?`Q\  
V u1|5  
归并排序: B5MEE  
D~r{(u~Ya  
package org.rut.util.algorithm.support; !Tu4V\^~A  
Rq,Fp/  
import org.rut.util.algorithm.SortUtil; Hg`2- Nl  
&C.m*^`^  
/** _v +At;Y  
* @author treeroot u!9bhL`  
* @since 2006-2-2 )d7U3i  
* @version 1.0 L; 'C5#GN  
*/ "-A@d&5.  
public class MergeSort implements SortUtil.Sort{ [K#pU:lTH  
^|lG9z%Foy  
/* (non-Javadoc) &8@ a"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `fUP q ;  
*/ mFJb9 ,  
public void sort(int[] data) { CV7%ud]E  
int[] temp=new int[data.length]; &~sk7iGi  
mergeSort(data,temp,0,data.length-1); ;%Rp=&J  
} [eZ'h8  
wZ\% !# }7  
private void mergeSort(int[] data,int[] temp,int l,int r){ .q_SA-!w>  
int mid=(l+r)/2; ZA8FX  
if(l==r) return ; '^~3 8=FA  
mergeSort(data,temp,l,mid); ky0,#ZOF  
mergeSort(data,temp,mid+1,r); A:YWXcg  
for(int i=l;i<=r;i++){ <n)R?P(or  
temp=data; .Af H>)E  
} 'QxPQ cU  
int i1=l; QliP9-im3  
int i2=mid+1; YV"LM6`  
for(int cur=l;cur<=r;cur++){ q.69<Rs  
if(i1==mid+1) hSfLNvK  
data[cur]=temp[i2++]; ff<ad l-  
else if(i2>r) eVB.g@%T  
data[cur]=temp[i1++]; \'Ewn8Qv8  
else if(temp[i1] data[cur]=temp[i1++]; MD=VR(P?eq  
else Jej-b<HmQ  
data[cur]=temp[i2++]; }*R.>jQ+Y  
} "i/3m'<2  
} rBovC  
B)L;ja  
} R; Gf3K  
0fU^  
改进后的归并排序: ffE&=eh)  
"Go)t + -  
package org.rut.util.algorithm.support; /dt'iai~l  
o;M-M(EZQ6  
import org.rut.util.algorithm.SortUtil; wO3K2I]>0  
dI|`"jl#  
/** 7z4u?>pne*  
* @author treeroot O4w:BWVsn  
* @since 2006-2-2 {qkd63 X  
* @version 1.0 "J (.dg]"  
*/ UON W3}-  
public class ImprovedMergeSort implements SortUtil.Sort { >!|(n @  
-(YdK8  
private static final int THRESHOLD = 10; t(F] -[  
#3o]Qo[Sc  
/* 8ncgTCH:  
* (non-Javadoc) GDj ViAFm  
* ewb/ Z[4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4yu ^cix(  
*/ niIjatT  
public void sort(int[] data) { $S0eERg a  
int[] temp=new int[data.length]; 1*Ui=M4  
mergeSort(data,temp,0,data.length-1); 9#AsSbBpf  
} DG $._  
"x$RTuWA9  
private void mergeSort(int[] data, int[] temp, int l, int r) { ]Ak@!&hyak  
int i, j, k; (iZE}qf7 g  
int mid = (l + r) / 2; 4x JOPu  
if (l == r) 044*@a5f  
return; #815h,nP+  
if ((mid - l) >= THRESHOLD) fjAJys)Q  
mergeSort(data, temp, l, mid); _,M:"3;Z  
else ToHCS/J59  
insertSort(data, l, mid - l + 1); 6!}tmdzR  
if ((r - mid) > THRESHOLD) ?"no~(EB  
mergeSort(data, temp, mid + 1, r); fYzOT, c  
else c=T^)~$$  
insertSort(data, mid + 1, r - mid); )A4WK+yD$z  
3 TN?yP)  
for (i = l; i <= mid; i++) { hC.7Z]  
temp = data; %q@eCN  
} ?wR;"  
for (j = 1; j <= r - mid; j++) { d&p]O  
temp[r - j + 1] = data[j + mid]; EMe6Z!k  
} 2>l:: 8Pp  
int a = temp[l]; 1;l&ck-Gg/  
int b = temp[r]; !(hP{k ^g  
for (i = l, j = r, k = l; k <= r; k++) { F%Lniv/N  
if (a < b) { 6SMGXy*]^  
data[k] = temp[i++]; Oifu ?f<r  
a = temp; L30x2\C  
} else { :ji_dQ8k  
data[k] = temp[j--]; 9_rNJLj8y  
b = temp[j]; +OF(CcA^  
} 9Osjh G  
} G^F4c{3c~  
} k})Ag7c  
hgE!) UE  
/** KLXv?4!  
* @param data <,l&),  
* @param l !b*lL#s,Y  
* @param i DsqsMlB{  
*/ A>$VkGo  
private void insertSort(int[] data, int start, int len) { ,LXuU8sB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !GMb~  
} B7TA:K  
} >Ge&v'~_|  
}  y'Xg"  
} :x97^.eW~  
 `-4c}T  
堆排序: "gdm RE{x  
O@3EJkv  
package org.rut.util.algorithm.support; f& (u[W  
r]km1SrS  
import org.rut.util.algorithm.SortUtil; ?N#mD  
Rcf_31 L  
/** /Z>#lMg\.  
* @author treeroot &:8a[C2=  
* @since 2006-2-2 zb~!> QIz{  
* @version 1.0 C$)#s{*  
*/ Iq_cs '  
public class HeapSort implements SortUtil.Sort{ FgRlxz  
GFx >xQk  
/* (non-Javadoc) /g'F+{v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f6^H Q1SSt  
*/ ]BCH9%zLj  
public void sort(int[] data) { ,a< !d  
MaxHeap h=new MaxHeap(); W*-+j*e|_P  
h.init(data); 1d|+7  
for(int i=0;i h.remove(); %|o4 U0c  
System.arraycopy(h.queue,1,data,0,data.length); LKxyj@Eq  
} " 9 h]P^  
]gkI:scPA  
private static class MaxHeap{ _i:yI-jA  
_7]* 5Pxo  
void init(int[] data){ . 5|wy<  
this.queue=new int[data.length+1]; //>f#8Ho  
for(int i=0;i queue[++size]=data; 6I72;e ^!  
fixUp(size); +QuaQ% lA  
} znFa4  
} ?^2(|t9KU  
zhKb|SV  
private int size=0; 1>4'YMdZi  
: UD<1fh  
private int[] queue; ?A2#V(4  
-O\!IXG^  
public int get() { S*IF/ fu  
return queue[1]; AlIFTNg:"  
} Bh"o{-$p8`  
C* b!E:  
public void remove() { #)hM]=,e  
SortUtil.swap(queue,1,size--); =5oE|F%  
fixDown(1); vEvVT]g[V  
} 5pI2G  
file://fixdown 41^+T<+  
private void fixDown(int k) { GG5wiN*2S  
int j; ckBcwIXlP&  
while ((j = k << 1) <= size) { Aj;Z &  
if (j < size %26amp;%26amp; queue[j] j++; 5<GC  
if (queue[k]>queue[j]) file://不用交换 M8ZpNa  
break; :xm, Ok  
SortUtil.swap(queue,j,k); C3u/8Mrt7  
k = j; ~M3`mO+^U  
} b/Z=FS2T  
} CQW#o_\  
private void fixUp(int k) { fDNiU"  
while (k > 1) { D4ESo)15'  
int j = k >> 1; /=*h\8c~  
if (queue[j]>queue[k]) :,Q\!s!  
break; 1CU-^ j  
SortUtil.swap(queue,j,k); A/|To!R  
k = j; WOrz7x  
} UIi;&[  
} B?`Gs^Y {z  
>Olg lUzA  
} 4`yCvPu  
IC{\iwO/~c  
} 7;jwKA;k  
"G].hKgbk*  
SortUtil: ARGtWW~:  
PxNp'PZr9  
package org.rut.util.algorithm; &q^\*<B.^  
"-88bF~  
import org.rut.util.algorithm.support.BubbleSort; :3pJGMv(  
import org.rut.util.algorithm.support.HeapSort; +3dWnBg?  
import org.rut.util.algorithm.support.ImprovedMergeSort; e;GLPB   
import org.rut.util.algorithm.support.ImprovedQuickSort; \  $;E,  
import org.rut.util.algorithm.support.InsertSort; rkugV&BhV  
import org.rut.util.algorithm.support.MergeSort; :hr% 6K7  
import org.rut.util.algorithm.support.QuickSort; h.d-a/  
import org.rut.util.algorithm.support.SelectionSort; fb3(9  
import org.rut.util.algorithm.support.ShellSort; VNBf2Va  
8yij=T*  
/** VW:WB.K$  
* @author treeroot AiKja>Fl<  
* @since 2006-2-2 n}/?nP\%  
* @version 1.0 :,Z'/e0&  
*/ : 8dQ8p;  
public class SortUtil { `2-6Qv  
public final static int INSERT = 1; ySAkj-< /P  
public final static int BUBBLE = 2; {9:[nqX  
public final static int SELECTION = 3; zGzeu)d  
public final static int SHELL = 4; N3dS%F,_  
public final static int QUICK = 5; 1W3+ng  
public final static int IMPROVED_QUICK = 6; )r2$!(NQ  
public final static int MERGE = 7; ko<u0SjF)u  
public final static int IMPROVED_MERGE = 8; %3b;`Oa  
public final static int HEAP = 9; 8_ byS<b8  
KYa}k0tVAp  
public static void sort(int[] data) { &O8vI ,M  
sort(data, IMPROVED_QUICK); )45~YDS;t  
} E)w6ZwV  
private static String[] name={ >=Bl/0YH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1g_p`(  
}; LX f r  
QA|87alh  
private static Sort[] impl=new Sort[]{ = VIU  
new InsertSort(), 5i71@?q;  
new BubbleSort(), QFekj@  
new SelectionSort(), /B"FGa04p(  
new ShellSort(), 03N|@Tu  
new QuickSort(), efzS]1Jpz  
new ImprovedQuickSort(), 9;2{=,  
new MergeSort(), +vf~s^  
new ImprovedMergeSort(), @S?`!=M  
new HeapSort() JG^fu*K  
}; {7d(B1[1  
-Cn x!g}  
public static String toString(int algorithm){ *2,tGZ  
return name[algorithm-1]; X|&v]mJ  
} UP<B>Y1a  
B1^9mV'O  
public static void sort(int[] data, int algorithm) { ,zF^^,lO7  
impl[algorithm-1].sort(data); (#e,tu  
} o|7ztpr  
gh9Gc1tKt  
public static interface Sort { (V(8E%<c  
public void sort(int[] data); H8!; XB  
} My6a.Kl  
!)r1zSY"g  
public static void swap(int[] data, int i, int j) { "udA-;!@&  
int temp = data; M4H~]Ftn  
data = data[j]; Jb;@'o6  
data[j] = temp; R1cOUV,y[/  
} /Fj*sS8  
} 5ho!}K  
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