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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。 (Ts#^qC  
插入排序: =6YffXa_s  
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package org.rut.util.algorithm.support; P#j>hS  
o],z/MPL  
import org.rut.util.algorithm.SortUtil; c.?+rcnq  
/** >Hd Pcsl L  
* @author treeroot sjW;Nsp  
* @since 2006-2-2 sUe<21:  
* @version 1.0 @Jh;YDr`A  
*/ ]DJ] L=T7  
public class InsertSort implements SortUtil.Sort{ 5f}GV0=n  
|V dr/'  
/* (non-Javadoc) k$d+w][  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (@(rz/H  
*/ LX%UkfA9  
public void sort(int[] data) { 6'a1]K  
int temp; yt 5'2!jc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `VL<pqPP  
} >Y)FoHa+/  
} &al\8  
} SbYs a  
zNh$d;(O$^  
} .dw;b~p  
.}*_NU   
冒泡排序: _GtG8ebr  
lm[LDtc  
package org.rut.util.algorithm.support; 8|2I/#F}]  
}uo.N  
import org.rut.util.algorithm.SortUtil; `21$e  
G5Z_[Q ~z  
/** y%Wbm&h  
* @author treeroot +cf.In,{  
* @since 2006-2-2 <8sy*A?0z  
* @version 1.0 Su>UXuNdE#  
*/ O_^X:0}  
public class BubbleSort implements SortUtil.Sort{ ;=i$0w9W  
au?5^u\  
/* (non-Javadoc) U/j+\Kc~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l(A>Rw|  
*/ @FLa i  
public void sort(int[] data) { /9k}Ip  
int temp; Q<UKR|6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 69C>oX  
if(data[j] SortUtil.swap(data,j,j-1); -Izc-W  
} B,NHy C1i  
} !fT3mI6u\  
} TM*<hC  
} k 1sR^&{l  
j"J[dlm2M  
} ]/TqPOi:  
 $hgsWa  
选择排序: y0b FzR9  
Fq`wx  
package org.rut.util.algorithm.support; rvwfQ'14  
.4cOMiG  
import org.rut.util.algorithm.SortUtil; hcJny  
RI0 +9YJ  
/** -)o0P\cTEt  
* @author treeroot bqI| wGCA"  
* @since 2006-2-2 ?YA5g' l  
* @version 1.0 PTf.(B"z  
*/ F qH@i Z  
public class SelectionSort implements SortUtil.Sort { zrazFI0G  
Z:kX9vw.  
/* nv-_\M   
* (non-Javadoc) +jrMvk"  
* m L,El2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YA'_Ba(v)  
*/ jb {5   
public void sort(int[] data) { mj^]e/s%  
int temp; n<3*7/-  
for (int i = 0; i < data.length; i++) { h_?#.z0ih;  
int lowIndex = i; Xw<5VIAHm;  
for (int j = data.length - 1; j > i; j--) { bR&<vrMmrA  
if (data[j] < data[lowIndex]) { H>Ws)aCq  
lowIndex = j; cd?arIV5  
} 1Yb9ILX[J  
} |@lVFEl]  
SortUtil.swap(data,i,lowIndex); $"`9QD~  
} h6Q-+_5  
} r\f|r$i  
}RPeAcbU_  
} _3{,nhkf:!  
-mPrmapb3  
Shell排序: 7iM;X2=7}  
%m0x]  
package org.rut.util.algorithm.support; 69tT'U3vb$  
_0c$SK  
import org.rut.util.algorithm.SortUtil; ,Z 1W3;O  
0Q= o"@  
/** {I~[a#^  
* @author treeroot QnPgp(d <  
* @since 2006-2-2 Pln*?o  
* @version 1.0 jy2@t*  
*/ B$kp\yL  
public class ShellSort implements SortUtil.Sort{ g"&e*fF  
 ~hxo_&  
/* (non-Javadoc) r1!]<=&\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GP,xGZZ  
*/ /naGn@m5u  
public void sort(int[] data) { 7IV:X _y  
for(int i=data.length/2;i>2;i/=2){ y9'F D5\s  
for(int j=0;j insertSort(data,j,i); ;th]/ G  
} !YJ^BI    
} DJ#z0)3<p  
insertSort(data,0,1); {Vj25Gt  
} DZ9qIc}Y  
TV&4m5  
/** D_MNF =7  
* @param data O&c~7tM%  
* @param j $xsmF?Dsx5  
* @param i @N0(%o&  
*/ {x8UL7{  
private void insertSort(int[] data, int start, int inc) { $}/Q%r  
int temp; Q8sCI An{  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %=O$@.%Zc  
} Hxm CKW!  
} av*M #  
} gc6T`O-_;  
0XNj! ^&  
} iTq~ ^9G  
hm5A@Z   
快速排序: )xMP  
8;r7ksE~  
package org.rut.util.algorithm.support; b2vc  
>X(,(mKi  
import org.rut.util.algorithm.SortUtil; RZ:i60  
d{LQr}_o$$  
/** @`X-=GCl  
* @author treeroot ;<yVJox  
* @since 2006-2-2 dqvgyyq  
* @version 1.0 -S(_ZbeN  
*/ VN1a\  
public class QuickSort implements SortUtil.Sort{ [!v| M  
b@&ydgmaQ  
/* (non-Javadoc) 43?J~}<Vs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +J~q:b.  
*/ XS'0fq a  
public void sort(int[] data) { oQvG3(.  
quickSort(data,0,data.length-1);  xedbr  
} sN `NZyG  
private void quickSort(int[] data,int i,int j){ bof{R{3q  
int pivotIndex=(i+j)/2; cP~?Iz8nD  
file://swap 1jhGshhp  
SortUtil.swap(data,pivotIndex,j); 1K;i/  
$*Q_3]AY]  
int k=partition(data,i-1,j,data[j]); 1wqsGad+;  
SortUtil.swap(data,k,j); |5}~n"R5  
if((k-i)>1) quickSort(data,i,k-1); q&-A}]  
if((j-k)>1) quickSort(data,k+1,j); 0*.> >rI  
:K) =Hf2y  
} 9N[vNg<n  
/** w C0fPPeA  
* @param data B !hrr  
* @param i |Gw[vY  
* @param j }0({c~z\  
* @return ]bq<vI%  
*/ 8'2lc  
private int partition(int[] data, int l, int r,int pivot) { 1/bu}?a  
do{ mYudUn4Wo  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); k_=~ObA$g  
SortUtil.swap(data,l,r); ~la=rh3  
} Wh,{|R[  
while(l SortUtil.swap(data,l,r); 4^KoH eM6  
return l; Y.Er!(pz  
} jnK8 [och  
kd9GHN;7  
} Ge|& H]W  
RPvOup  
改进后的快速排序: !@_( W   
jG3}V3|.  
package org.rut.util.algorithm.support; S"iQQV{)Z  
vYD>m~Qc^  
import org.rut.util.algorithm.SortUtil; {9<2{$Og  
l.i"Z pik  
/**  ,T{(t@  
* @author treeroot  pPm9v_G  
* @since 2006-2-2 #_+T@|r  
* @version 1.0 |f^/((:D  
*/ 27vLI~  
public class ImprovedQuickSort implements SortUtil.Sort { 3mIX9&/  
{.N" 6P  
private static int MAX_STACK_SIZE=4096; #lax0IYY=  
private static int THRESHOLD=10; 1GY[1M1^  
/* (non-Javadoc) N[j7^q7Xt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #=f ]"uM<  
*/ W?"Z>tgp  
public void sort(int[] data) { yD`{9'L -  
int[] stack=new int[MAX_STACK_SIZE]; >?,arER  
?wps_XU  
int top=-1; 4 []R?lL  
int pivot; U4_ <  
int pivotIndex,l,r; YZCPS6PuE  
O,_2dj d  
stack[++top]=0; NA`3   
stack[++top]=data.length-1; % 8kbX  
qFV=P k  
while(top>0){ =L$};ko  
int j=stack[top--]; rbnu:+!  
int i=stack[top--]; UcMe("U  
C"/]X  
pivotIndex=(i+j)/2; N1I1!!$K;%  
pivot=data[pivotIndex]; G{ rUqo  
v&U'%1|  
SortUtil.swap(data,pivotIndex,j); }Kq5!XJV9C  
eb:mp/  
file://partition >R?EJ;h  
l=i-1; 181-m7W  
r=j; {Gs&u>>R"^  
do{ AQ-P3`bCb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); d8g3hyI5\  
SortUtil.swap(data,l,r); Q=yQEh|Y  
} (J): >\a]  
while(l SortUtil.swap(data,l,r); BNg\;2r  
SortUtil.swap(data,l,j); }0uSm%,"  
oJ`ih&Q8  
if((l-i)>THRESHOLD){ `"m"qUd  
stack[++top]=i; gv; =Yhw.c  
stack[++top]=l-1; ?x@BZe  
} .9 WUp>  
if((j-l)>THRESHOLD){ |rf\]3 F  
stack[++top]=l+1; gtz!T2%  
stack[++top]=j; 5/mW:G,&  
} "HVwm>qEi  
B[-%A!3 F  
} SGH"m/ e  
file://new InsertSort().sort(data); ?M7nbfy[A@  
insertSort(data); V0L^pDLOV  
} =[`wyQe`_  
/** U;KHF{Vm  
* @param data j2#Vdw|j  
*/ H(]lqvO  
private void insertSort(int[] data) { bE^Z;q19  
int temp; ']f]:X;6 w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T~%5^+[h  
} Tp<=dH%$%"  
} ]k{cPK  
} ZzI^*Nyg  
M!=v"C#  
} sEdWBT 8  
l~&efAJ-$  
归并排序: QA.B.U7!  
< V"'j  
package org.rut.util.algorithm.support; .F)b9d[?  
'[5tc fG#z  
import org.rut.util.algorithm.SortUtil; V:!fe+ Er  
Px=/fO G  
/** itD1r?O{pV  
* @author treeroot 6%ID*  
* @since 2006-2-2 uGLVY%N  
* @version 1.0 (7}v }3/  
*/ Q-}oe Q  
public class MergeSort implements SortUtil.Sort{ 8dUwJ"<5  
nAd 4g|  
/* (non-Javadoc) I_#)>%H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UNYU2ze'  
*/ RGLwtN  
public void sort(int[] data) { 1&QI1fvx  
int[] temp=new int[data.length]; \I,<G7!0  
mergeSort(data,temp,0,data.length-1); Qkqn~>  
} 6! g3Juh  
&66G  
private void mergeSort(int[] data,int[] temp,int l,int r){ GFlsI-*`  
int mid=(l+r)/2; fQuphMOl6  
if(l==r) return ; KfWVz*DC!  
mergeSort(data,temp,l,mid); |fTQ\q]W  
mergeSort(data,temp,mid+1,r); pq-zy6^  
for(int i=l;i<=r;i++){ K( 6=)  
temp=data; \s<iM2]Kl  
} G~4^`[elB  
int i1=l; N3r{|Bu  
int i2=mid+1; I U 4[}x  
for(int cur=l;cur<=r;cur++){ ":"M/v%F  
if(i1==mid+1) #)>>f  
data[cur]=temp[i2++]; <2H 0m  
else if(i2>r) %DPtK)X1  
data[cur]=temp[i1++]; $j{ynh)^  
else if(temp[i1] data[cur]=temp[i1++]; [ Q=) f  
else sTv/;*  
data[cur]=temp[i2++]; 7\a(Imq  
} EN J]  
} wqE ]o= k  
P). @o.xl  
} )CdglPK  
p$[*GXR4  
改进后的归并排序: 6/@ cP/  
+-ieaF  
package org.rut.util.algorithm.support; rIge6A>I  
*i%!j/QDAP  
import org.rut.util.algorithm.SortUtil; 348Bu7':  
do=VPqy  
/** ]X?+]9Fr  
* @author treeroot |.(o4<nx.  
* @since 2006-2-2 |nD2k,S<?  
* @version 1.0 {,s:vPoiA  
*/ 'Q(A5zfN]Y  
public class ImprovedMergeSort implements SortUtil.Sort { eIof{#  
zq4mT;rqz  
private static final int THRESHOLD = 10; Cn28&$:J  
L<8y5B~W  
/* e|MyA?`  
* (non-Javadoc) zy$hDy0  
* )\VUAD%~e7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,~G _3Oz  
*/ CF42KNq  
public void sort(int[] data) { y62;&{?m  
int[] temp=new int[data.length]; ItOVx!"@9  
mergeSort(data,temp,0,data.length-1); 5QS d$J  
} `i{o8l  
C(,s_Ks  
private void mergeSort(int[] data, int[] temp, int l, int r) { um3 M4>K  
int i, j, k; "_#%W oo  
int mid = (l + r) / 2; -Qn:6M>w^  
if (l == r) 0^[ " &K/  
return; YuPgsJ[m  
if ((mid - l) >= THRESHOLD) *[yCcqN.  
mergeSort(data, temp, l, mid); YT:<AJm  
else wc__g8?'  
insertSort(data, l, mid - l + 1); UdL`.D,  
if ((r - mid) > THRESHOLD) k9R1E/;  
mergeSort(data, temp, mid + 1, r); 1Tiq2+hmf  
else pd7FU~-  
insertSort(data, mid + 1, r - mid); >Q5 SJZ/  
h Qu9ux  
for (i = l; i <= mid; i++) { kN]#;R6  
temp = data; P'Y8 t  
} @KS:d\l}U  
for (j = 1; j <= r - mid; j++) { ;WGY)=-gv  
temp[r - j + 1] = data[j + mid]; `RmB{qgB  
} 9wWjl}%  
int a = temp[l]; 4-3B"  
int b = temp[r]; |{oKhC^yG  
for (i = l, j = r, k = l; k <= r; k++) { uN`ACc)ESi  
if (a < b) { *VRFs=  
data[k] = temp[i++]; X^xu$d6   
a = temp; 4El{2cfA  
} else { Q?1 KxD!  
data[k] = temp[j--]; O]2h=M@q.  
b = temp[j]; **s:H'Mw_  
} ^?J:eB!  
} 1km=9[;w'  
} %0u7pk  
#d|.BxH  
/** 1^Caz-  
* @param data d[$1:V  
* @param l ^R<= }  
* @param i y"9TS,lmK  
*/ le[5a=e(  
private void insertSort(int[] data, int start, int len) { &12aI |u^<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); l0@$]76cX;  
} y|lP.N/  
} UoKBcarm  
} vNtbb]')m  
} +ZZiZ&y  
ZcdS?Z2k  
堆排序: CyXcA;H,.  
^WD [>E~  
package org.rut.util.algorithm.support; =3J~ Fk  
BO[A1'>  
import org.rut.util.algorithm.SortUtil; uox;PDK  
Y0eu^p)  
/** }'X}!_9w>  
* @author treeroot `$#64UZ>U1  
* @since 2006-2-2 -#Wc@\;  
* @version 1.0 -nd6hx  
*/ Viw{<VH=  
public class HeapSort implements SortUtil.Sort{ T%]: tDa  
z$YOV"N  
/* (non-Javadoc) (wA|lK3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z+\>e~U6J}  
*/ ?ke C   
public void sort(int[] data) { mGY 74>/  
MaxHeap h=new MaxHeap(); { aB_t%`w  
h.init(data); (sl]%RjGa  
for(int i=0;i h.remove(); iu1iO;q  
System.arraycopy(h.queue,1,data,0,data.length); _*`AGda  
} Y5npz^i  
m[8#h(s*t  
private static class MaxHeap{ -u9{R\S  
|w>DZG!}1-  
void init(int[] data){ YWdlE7 y  
this.queue=new int[data.length+1]; (PB|.`_<H  
for(int i=0;i queue[++size]=data; U>I#f  
fixUp(size); 9B%"7MVn  
}  ipyO&v  
} .#}SK!"B  
>5N}ZIN  
private int size=0; |mM7P^I  
h\ ybh  
private int[] queue; z1:auodI@  
( Rf)&KN  
public int get() { %%3ugD5i!  
return queue[1]; Em?skUnG,  
} /JfXK$`  
k1cBMDSokO  
public void remove() { >:Oo[{)  
SortUtil.swap(queue,1,size--); gM= ~dBz  
fixDown(1); fcBS s\\C~  
} y1AS^'  
file://fixdown ^1nf|Xj [  
private void fixDown(int k) { >H%8~ Oek  
int j; #".{i+3E  
while ((j = k << 1) <= size) { aY?}4Bx  
if (j < size %26amp;%26amp; queue[j] j++; P$oa6`%l  
if (queue[k]>queue[j]) file://不用交换 oC?b]tzj  
break;  #?,cYh+  
SortUtil.swap(queue,j,k); ']rh0?  
k = j; :@3d  
} "vJADQ4F  
} Nyo6R9^  
private void fixUp(int k) { vLC&C-f  
while (k > 1) { zzx4;C",u  
int j = k >> 1; [NFAdE  
if (queue[j]>queue[k]) ~/.&Z`ls  
break; Y}[r`}={  
SortUtil.swap(queue,j,k); Fd 91Y  
k = j; FUOvH 85f  
} N0Y!  
} [n^___7  
npe*A  
} &=UzF  
2n7[Op  
} md2kZ.5u  
}i[jJb`bY  
SortUtil: c8Opc"UE  
{B}0LJIpL  
package org.rut.util.algorithm; Ay_<?F+&  
Gm%[@7-  
import org.rut.util.algorithm.support.BubbleSort; K0#tg^z5d  
import org.rut.util.algorithm.support.HeapSort; 0I&rZMpF&  
import org.rut.util.algorithm.support.ImprovedMergeSort; "8rP?B(  
import org.rut.util.algorithm.support.ImprovedQuickSort; ILpB:g  
import org.rut.util.algorithm.support.InsertSort; J|b1 K]  
import org.rut.util.algorithm.support.MergeSort; (sl~n_<ds8  
import org.rut.util.algorithm.support.QuickSort; T S.lFg:K  
import org.rut.util.algorithm.support.SelectionSort; Rza \n8  
import org.rut.util.algorithm.support.ShellSort; {P3,jY^  
4+~+`3;~v  
/** yA_d${n  
* @author treeroot DUtpd|  
* @since 2006-2-2 #}gc6T~0  
* @version 1.0 ox*Ka]  
*/ |~/{lE=I  
public class SortUtil { 6` s[PKP.  
public final static int INSERT = 1; r*$"]{m}  
public final static int BUBBLE = 2; k^L (q\D  
public final static int SELECTION = 3; jC@^/rMh  
public final static int SHELL = 4; l)|CPSN?w  
public final static int QUICK = 5; vB,N6~r>  
public final static int IMPROVED_QUICK = 6; 6SmSu\lgV  
public final static int MERGE = 7; :[rx|9M6  
public final static int IMPROVED_MERGE = 8; 'X?`+2wK   
public final static int HEAP = 9; o+vf  
YnMph0\Y^  
public static void sort(int[] data) { bw[!f4~  
sort(data, IMPROVED_QUICK); >i.+v[)#  
} 8R z=)J  
private static String[] name={ #eaey+~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f(C0&"4e  
}; h>n;A>k@N  
Y'Af I^K  
private static Sort[] impl=new Sort[]{ " c]Mz&z  
new InsertSort(), 3HA{18{4uP  
new BubbleSort(), 2D!'7ZD  
new SelectionSort(), 5M(?_qj  
new ShellSort(), FxUH ?%w  
new QuickSort(), SAoqq  
new ImprovedQuickSort(), ^\CQWgY(  
new MergeSort(), (&B & V  
new ImprovedMergeSort(), b)V[d8IA  
new HeapSort() Gq{v)iN  
}; 0s8S`hCn>  
oYF8:PYB  
public static String toString(int algorithm){ bZi>   
return name[algorithm-1]; tQ/w\6{  
} mI.*b(Irp  
@-m&X2J+c  
public static void sort(int[] data, int algorithm) { GM%|mFqeu  
impl[algorithm-1].sort(data); ]juXm1)>W1  
} F3qi$3HM  
6 Ym[^U  
public static interface Sort { JvUKfsnu{  
public void sort(int[] data); &x;nP6mV  
} ,Bta)  
ZNUV Bi  
public static void swap(int[] data, int i, int j) { o+nU{  
int temp = data; s9Xeh"  
data = data[j]; k/LV=e7  
data[j] = temp; -0kwS4Hx2  
} w7 QIKsI0  
} @NVq .z  
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