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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。 8/"fWm/  
插入排序: $@i"un;  
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package org.rut.util.algorithm.support; BQ jK8c<  
1R. 4:Dn_  
import org.rut.util.algorithm.SortUtil; Cbs5dn(Y  
/** K]xa/G(  
* @author treeroot Cb:gH}j  
* @since 2006-2-2 WGAXIQ  
* @version 1.0 n$:IVX"2b  
*/ "+uNmUUnm  
public class InsertSort implements SortUtil.Sort{ <A.W 8b7D  
1JEnnqu  
/* (non-Javadoc) wdvLx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '>(.%@  
*/ j8K,jZ  
public void sort(int[] data) { 6yy;JQAke  
int temp; } 17.~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $M:3XAN  
} Em7 WDu0  
} pZZf[p^s|  
} RL[E X5U  
.O0O-VD+a  
}  2Cg$,#H  
4m-I5!=O  
冒泡排序: _3Cn{{ A0  
U,Mx@KdV  
package org.rut.util.algorithm.support; ]P[%Mhg^  
0ji q-3V)  
import org.rut.util.algorithm.SortUtil; X#w%>al  
p#KW$OQ]8  
/** ^JR;epVJ  
* @author treeroot A%\tiZe  
* @since 2006-2-2 mNYl@+:psj  
* @version 1.0 0L^u2HZYL  
*/ \x >65;  
public class BubbleSort implements SortUtil.Sort{ O3o: qly!  
$t-n'Qh^2  
/* (non-Javadoc) jtm?z c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #?B%Ja% ;W  
*/ N:"C+ a(  
public void sort(int[] data) { u z\0cX_  
int temp; q/1Or;iK  
for(int i=0;i for(int j=data.length-1;j>i;j--){ z}Jr^>  
if(data[j] SortUtil.swap(data,j,j-1); =xianQ<lK  
} OU7 %V)X5  
} *V k ^f+5  
} &2I*0  
} tD$lNh^  
2-0$FQ@/  
} c6Q(Ygc  
Ejq#~Zhr!  
选择排序: Ei({`^  
23DJV);g8  
package org.rut.util.algorithm.support; $ex!!rqN|  
{0YAzZ7  
import org.rut.util.algorithm.SortUtil; W >(vYU  
j*;N\;iL!*  
/** EN !?:RV  
* @author treeroot !8tS|C#2  
* @since 2006-2-2 vf~`eT  
* @version 1.0 u2(eaP8d  
*/ 9TxyZL   
public class SelectionSort implements SortUtil.Sort { as"N=\N  
4O{Avt7C  
/* nkeI60  
* (non-Javadoc) La[K!u\B  
* UF__O.l__  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]|:uU  
*/ vs&8wbS)  
public void sort(int[] data) { Dmdy=&G  
int temp; 8n?kZY$,  
for (int i = 0; i < data.length; i++) { f*xpE`&  
int lowIndex = i; <JI& {1  
for (int j = data.length - 1; j > i; j--) { 1MA@JA:T  
if (data[j] < data[lowIndex]) { %|XE#hw  
lowIndex = j; Rn+4DcR  
} ;9uRO*H?T  
} pz doqAVI  
SortUtil.swap(data,i,lowIndex); o!&W sD  
} sP$Ks#/  
} "t(wG{RxY  
>adV(V<  
} Ov9 Q?8KzM  
")lw9t`  
Shell排序: .+K S`  
#-cTc&$O;  
package org.rut.util.algorithm.support; *9gD*AnM,  
gY9\o#)<  
import org.rut.util.algorithm.SortUtil; 0&fl#]oCE  
/owO@~G  
/** #^mqQRpgq  
* @author treeroot ^~ L}<]  
* @since 2006-2-2 KhM.Tc  
* @version 1.0 :]eb<J  
*/ eK`PxoTI-I  
public class ShellSort implements SortUtil.Sort{ ,|To#umym>  
. \5$MIF  
/* (non-Javadoc) S-Ai3)t6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I+,SZ]n  
*/ 6/mF2&&g  
public void sort(int[] data) { rj  H`  
for(int i=data.length/2;i>2;i/=2){ Ygkv7>?,  
for(int j=0;j insertSort(data,j,i); o7xgRSz\  
} ^abD !8  
} Yr&Ka:  
insertSort(data,0,1); @C.GKeM*  
} E,*&BDW  
aU<s<2 O)  
/** :%-,Fxl4  
* @param data /r.6XZs6  
* @param j 7!2 HNg  
* @param i BgRZ<B`  
*/ b1!@v+  
private void insertSort(int[] data, int start, int inc) { uMFV% +I  
int temp; RIhOR8 )  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Q;26V4  
} E`@43Nz  
} F,v 7ifo#f  
} OV5e#AOy)  
R,Ml&4pZ}  
} if~rp-\P  
68 x}w Ae  
快速排序: MTmO>V&O  
D[>W{g $  
package org.rut.util.algorithm.support; ^9ng)  
M#0 @X  
import org.rut.util.algorithm.SortUtil;  ^Omfe  
\{PNwF?  
/** <d@pmh  
* @author treeroot C+l?k2  
* @since 2006-2-2 V-vlTgemwc  
* @version 1.0 W(@>?$&  
*/ ')nnWlK  
public class QuickSort implements SortUtil.Sort{ ,k*F`.[  
4MX7=!E  
/* (non-Javadoc) (fXq<GXAn/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .s};F/(diD  
*/ Bxv8RB  
public void sort(int[] data) { 6GKT yN  
quickSort(data,0,data.length-1); JE)J<9gf  
} f9'] jJ+  
private void quickSort(int[] data,int i,int j){ Kpg:yrc['  
int pivotIndex=(i+j)/2; oBw}hH,hp  
file://swap %3,xaVN  
SortUtil.swap(data,pivotIndex,j); s)tpr   
$^Ca: duk  
int k=partition(data,i-1,j,data[j]); V} bM!5 H  
SortUtil.swap(data,k,j); 3A R%&:-  
if((k-i)>1) quickSort(data,i,k-1); ){tPP$-i=  
if((j-k)>1) quickSort(data,k+1,j); ]p$zvMf}  
z~.9@[LG]  
} F aWl,}]  
/** 37K U~9-A  
* @param data cV]y=q 6  
* @param i WEVl9]b'e+  
* @param j #Wx=v$"  
* @return OROqT~6G  
*/ rv?!y8\  
private int partition(int[] data, int l, int r,int pivot) { ]<X2AO1  
do{ .&(8(C  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4e/cqN 6  
SortUtil.swap(data,l,r); 2v\W1VF  
} BkT-m'I?  
while(l SortUtil.swap(data,l,r); Opry`}5h  
return l; CZfE |T~  
} MF|*AB|E  
%O/d4  
} ~'[jBn)  
3M$X:$b  
改进后的快速排序: Dqr9Vv  
tDU}rI8?  
package org.rut.util.algorithm.support; ;z0"Ox=7  
)l{A{f6O  
import org.rut.util.algorithm.SortUtil; bs:QG1*.  
]Wy.R6  
/** (j=DD6fC  
* @author treeroot hfh.eL  
* @since 2006-2-2 O#PwRud$  
* @version 1.0 ^^ j/  
*/ lE a W7j  
public class ImprovedQuickSort implements SortUtil.Sort { l4Y1(  
>p |yf. G  
private static int MAX_STACK_SIZE=4096; "VQ|E d  
private static int THRESHOLD=10; MHNe>C-!q  
/* (non-Javadoc) gA:[3J,[;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O=`o'%K<  
*/ 8GW ut=D  
public void sort(int[] data) { SW=aHM  
int[] stack=new int[MAX_STACK_SIZE]; 1t%<5O;R  
)"-fHW+fy  
int top=-1; `uhL61cMp  
int pivot; r\bq[9dX>  
int pivotIndex,l,r; 9,KVBO  
O,]_ tp  
stack[++top]=0; 7%YYr^d  
stack[++top]=data.length-1; 2 mq%|VG'  
kDg{ >mf  
while(top>0){ X}?ESjZJ  
int j=stack[top--]; (NM6micc  
int i=stack[top--]; {DS\!0T-X  
@?vLAsp\  
pivotIndex=(i+j)/2; 'ucGt  
pivot=data[pivotIndex]; Pzptr%{  
EaCZx  
SortUtil.swap(data,pivotIndex,j); Fu mn9  
$~Tf L{$  
file://partition `~|DoSi^d  
l=i-1; }JH`' &3  
r=j; aulaX/'-_  
do{ {N Y]L==H  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4UazD_`'  
SortUtil.swap(data,l,r); -g<cinNSp  
} L-MiaKcL  
while(l SortUtil.swap(data,l,r); w0$R`MOR+  
SortUtil.swap(data,l,j); W'd/dKU x  
oX#9RW/ >I  
if((l-i)>THRESHOLD){ -P*xyI  
stack[++top]=i; 9g4QVo|  
stack[++top]=l-1; ;h~?ko  
} \ bC}&Iz6  
if((j-l)>THRESHOLD){ n)Hk8)^8  
stack[++top]=l+1; RAdvIIQp:  
stack[++top]=j; GA7u5D"0  
} (Q\\Gw   
I=K[SY,]9  
} 4%%B0[Wo_O  
file://new InsertSort().sort(data); {QW-g  
insertSort(data); ]|;7R^o3|  
} N]V/83_  
/** >|5XaaDa  
* @param data xdCs5ko  
*/ 5UPPk$8 `  
private void insertSort(int[] data) { (UXv,_"nU  
int temp; \N4d_ fPj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Mo~ki"9.  
} v^;-@ddr  
} 7<fL[2-  
} mQFa/7FX  
_qEWu Do  
} 5a8JVDLX^  
'+tKvTU;  
归并排序: p[_Yi0U  
i+U@\:=  
package org.rut.util.algorithm.support; HKM~BL "X  
t2Ip\>;9f  
import org.rut.util.algorithm.SortUtil; HUK" OH  
(K<Z=a  
/** {WIY8B'c  
* @author treeroot <( cM*kV  
* @since 2006-2-2 3.B4(9:>,  
* @version 1.0 C0P*D,  
*/ aX:#'eDB  
public class MergeSort implements SortUtil.Sort{ jGJ.Pvc>i  
;gdi=>S_  
/* (non-Javadoc) S_ZLTcq<1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Al=(sHc'  
*/ G]1(X38[si  
public void sort(int[] data) { r(pwOOx  
int[] temp=new int[data.length]; }7-7t{G  
mergeSort(data,temp,0,data.length-1); `Fz\wPd  
} &3jBE --  
;HR 6X  
private void mergeSort(int[] data,int[] temp,int l,int r){ VjC*(6<Gj  
int mid=(l+r)/2; RfD{g"]y  
if(l==r) return ; fFjLp l  
mergeSort(data,temp,l,mid); r[6#G2  
mergeSort(data,temp,mid+1,r); 7s0)3HR}  
for(int i=l;i<=r;i++){ z7| s%&  
temp=data; |*Of^IkG0  
} mJSK; @w<O  
int i1=l; =DGn,i9  
int i2=mid+1; 44Q6vb?  
for(int cur=l;cur<=r;cur++){ '" ^ B&W  
if(i1==mid+1) qPL^zM+  
data[cur]=temp[i2++]; r9+E'\  
else if(i2>r) H&~5sEGa  
data[cur]=temp[i1++]; B>{|'z?%>  
else if(temp[i1] data[cur]=temp[i1++]; FLVbkW-G.  
else @][ a8:Y9I  
data[cur]=temp[i2++]; "xL;(Fqu  
} lv=yz\  
} X!HDj<  
I/oIcQS!k  
} ~8XX3+]z:X  
NG!>7$@RV  
改进后的归并排序: 14mXx}O  
/#:Rd^  
package org.rut.util.algorithm.support; R.91v4 J  
cxAViWsf  
import org.rut.util.algorithm.SortUtil; $o/0A  
~gSwxGT7d  
/**  i<B:  
* @author treeroot Vf"O/o}hq,  
* @since 2006-2-2 x{=[w`  
* @version 1.0 LDT'FwMjy  
*/ z0\;m{TH  
public class ImprovedMergeSort implements SortUtil.Sort { Y1#-^,qg  
ZM dM_i?  
private static final int THRESHOLD = 10; oq=?i%'>  
9`)w@-~~  
/* .jvSAV5B  
* (non-Javadoc) 3'?h;`v\Lo  
* 2N L:\%wz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cf.pTYSl  
*/ l*F!~J3  
public void sort(int[] data) { = 4BLc  
int[] temp=new int[data.length]; 73&]En  
mergeSort(data,temp,0,data.length-1); 6V.awg,  
} MV Hz$hyB  
y%{*uH}SL  
private void mergeSort(int[] data, int[] temp, int l, int r) { _F}IF9{?G  
int i, j, k; S4#A#a2J  
int mid = (l + r) / 2; N>uA|<b,  
if (l == r) 3I'M6WA  
return; l9M#]*{  
if ((mid - l) >= THRESHOLD) 4R K.Il*d  
mergeSort(data, temp, l, mid); Bpk@{E9  
else >k$[hk*~  
insertSort(data, l, mid - l + 1); XR{5]lKt_  
if ((r - mid) > THRESHOLD) Nm H}"ndv+  
mergeSort(data, temp, mid + 1, r); }9L 40)8  
else Y{%4F%Oy  
insertSort(data, mid + 1, r - mid); )ZS:gD  
K*([9VZ  
for (i = l; i <= mid; i++) { _7-"Vo X  
temp = data; W HlD %u  
} |#DC.Ga!  
for (j = 1; j <= r - mid; j++) { O!#L#u53  
temp[r - j + 1] = data[j + mid]; \SYPu,ZT  
} <7vIh0  
int a = temp[l]; ",MK'\E  
int b = temp[r]; I>< 99cwFI  
for (i = l, j = r, k = l; k <= r; k++) { xTa4.ZXg  
if (a < b) { b5iIV1g  
data[k] = temp[i++]; hN>('S-cq  
a = temp; JxX jDYrU  
} else { 0C7thl{Dms  
data[k] = temp[j--]; *Gk<"pEeS  
b = temp[j]; 3Ew"[FUs  
} DiZ!c "$  
} 5@w'_#!)  
} <Z\MZ&{k{*  
xm<5S;E5U4  
/** "-0pz\a  
* @param data jw`&Np2Q  
* @param l pl jV|.?  
* @param i {u(}ED#p  
*/ K B`1%=  
private void insertSort(int[] data, int start, int len) { (&9DB   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~ERRp3Ee ?  
} m~= ]^e  
} cc2d/<:  
} ?`vM#)  
} t7U,AQ=;P5  
4=?Ok":8  
堆排序: >K_$[qP3  
/tId#/Y  
package org.rut.util.algorithm.support; Ev$-P X  
8I5VrT  
import org.rut.util.algorithm.SortUtil; "6`)vgI~  
wu&|~@_s@  
/** b6LC$"t0  
* @author treeroot C:tSCNH[  
* @since 2006-2-2 [I+)Ak5  
* @version 1.0 H#1*'e>  
*/ Ux%\Y.PPI  
public class HeapSort implements SortUtil.Sort{ !#@4xeBPo  
1cHSgpoJ  
/* (non-Javadoc) 3/A[LL|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6k@%+<1  
*/ W(u6J#2  
public void sort(int[] data) { ZbZAx:L  
MaxHeap h=new MaxHeap(); +(I`@5  
h.init(data); %#S"~)  
for(int i=0;i h.remove(); r|JiGj^om  
System.arraycopy(h.queue,1,data,0,data.length); ?c=R"Yg$  
}  rvwl  
Ab^>z  
private static class MaxHeap{ *6sJ*lh  
ch)Ps2i  
void init(int[] data){ C]\^B6l<  
this.queue=new int[data.length+1]; *oX  
for(int i=0;i queue[++size]=data; Up /eV}C  
fixUp(size); RAD4q"}k  
} #o;CmB  
} q[y,J  
s0`|G|.}  
private int size=0; !SO$k%b}!  
j &0fC!k  
private int[] queue; 9d,]_l.sB  
m>Z\ rqOK  
public int get() { Ul$X%  
return queue[1]; ig.6[5a\  
} .^)C:XiW  
LAK-!!0X  
public void remove() { !"Oj$c -  
SortUtil.swap(queue,1,size--); ^?K?\   
fixDown(1); 2 d>d(^  
} ERX|cc  
file://fixdown !5E%W[  
private void fixDown(int k) { XW&8T"q7  
int j; =7J|KoKK  
while ((j = k << 1) <= size) { :C|>y4U&(s  
if (j < size %26amp;%26amp; queue[j] j++; g'}`FvADi  
if (queue[k]>queue[j]) file://不用交换 @T,H.#bL  
break; 7fN&Q~.  
SortUtil.swap(queue,j,k); #g-*n@ 1  
k = j; L?D~~Jb  
} cvs"WX3  
} X#Dhk6  
private void fixUp(int k) { y-)+I<M  
while (k > 1) { z!1/_]WJ,  
int j = k >> 1; E-tNB{r@  
if (queue[j]>queue[k]) ~*cY&  9  
break; ]UCk_zWsn1  
SortUtil.swap(queue,j,k); ik1L  
k = j; R.2KYhp ,  
} rmg";(I  
} k^dCX+  
?{.b9`  
} 8x^H<y=O  
%)6 :eIS  
} zfr(dQ  
?%za:{  
SortUtil: r"u(!~R  
'Qs 3  
package org.rut.util.algorithm; %:be{Y6  
RZ/+ K=  
import org.rut.util.algorithm.support.BubbleSort; Og;$P 'U  
import org.rut.util.algorithm.support.HeapSort; C5sN[  
import org.rut.util.algorithm.support.ImprovedMergeSort; '+q'H  
import org.rut.util.algorithm.support.ImprovedQuickSort; sw qky5_K  
import org.rut.util.algorithm.support.InsertSort; E/L?D  
import org.rut.util.algorithm.support.MergeSort; P=SxiXsr$  
import org.rut.util.algorithm.support.QuickSort; 9a~BAH,j  
import org.rut.util.algorithm.support.SelectionSort; 6ImV5^l  
import org.rut.util.algorithm.support.ShellSort; &;@b&p+  
X!M fJ^)q  
/** Xv5Ev@T  
* @author treeroot Y(I*%=:$  
* @since 2006-2-2 |H+k?C-w  
* @version 1.0 /P8eI3R  
*/ G$x["  
public class SortUtil { 4}_w4@(  
public final static int INSERT = 1; H'= i  
public final static int BUBBLE = 2; xU\:Vid+A  
public final static int SELECTION = 3; 1O3<%T#LOZ  
public final static int SHELL = 4; c;|&>Fp  
public final static int QUICK = 5; pqQdr-aR=  
public final static int IMPROVED_QUICK = 6; <>*''^  
public final static int MERGE = 7; l&^[cR  
public final static int IMPROVED_MERGE = 8;  _7j/[  
public final static int HEAP = 9; 4Utx 9^  
c;~Llj P  
public static void sort(int[] data) { CO%O<_C  
sort(data, IMPROVED_QUICK); &A5[C{x  
} Jn:GA@[I  
private static String[] name={ a+a%}76N  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >A'!T'"~  
}; : .w'gU_  
]kplb0`  
private static Sort[] impl=new Sort[]{ 4;c_%=cU  
new InsertSort(), S5pP"&I[  
new BubbleSort(), u, SX`6%  
new SelectionSort(), 8DS5<  
new ShellSort(), knK=ENf;e  
new QuickSort(), ;'18  
new ImprovedQuickSort(), 1\608~ZH  
new MergeSort(), vVN[bD<  
new ImprovedMergeSort(), "6NNId|Y  
new HeapSort() M"$RtS|h  
}; {u=\-|t  
Mn\ B\  
public static String toString(int algorithm){ 7E6?)bgh  
return name[algorithm-1]; R?9Plzt5  
} ohtn^o;C}  
_2 !e!Z  
public static void sort(int[] data, int algorithm) { kFa?q} 47  
impl[algorithm-1].sort(data); eNC5' Z  
} Jp*AIj  
VU'l~%ql  
public static interface Sort { JK8@J9(#  
public void sort(int[] data); ?>\]%$5o  
} <ZvPtW  
BLH3$*,H  
public static void swap(int[] data, int i, int j) { ,l? 76g  
int temp = data; fUWm7>6VA>  
data = data[j]; 0?L$)T-B  
data[j] = temp; S| -{wC%  
} w>q_8V_K  
} ]aW.b_7<9  
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