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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。 Ny$3$5/  
插入排序: /Qr`au  
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package org.rut.util.algorithm.support; 5.&)hmpg  
vGh>1U:  
import org.rut.util.algorithm.SortUtil; 2/s42 FoG  
/** Jkbeh.  
* @author treeroot 'plUs<A  
* @since 2006-2-2 pXN'vP  
* @version 1.0 ?H@<8Ra=3  
*/ s9nPxC&A  
public class InsertSort implements SortUtil.Sort{ 2Zuo).2a.  
'#LzQ6Pn  
/* (non-Javadoc) FG{les+:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QdQ1+*/+U  
*/ Y.Z:H!P);$  
public void sort(int[] data) { mS![J69(  
int temp; {xov8 M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3Xd:LDZ{  
} 3Z*o5@RI  
} {CBb^BP  
} =dKjTBR S'  
{ ,c*OR  
} kVKAG\F  
Z10}xqi!X  
冒泡排序: *DfOm`m  
dr=Q9%  
package org.rut.util.algorithm.support; >&S}u\/  
<YU4RZ  
import org.rut.util.algorithm.SortUtil; YkB@fTTS  
_Q I!UQdW  
/** *. |%uf.  
* @author treeroot t$Rc 0  
* @since 2006-2-2 xt,Qn460;  
* @version 1.0 -mRgB"8  
*/ oU\7%gQ  
public class BubbleSort implements SortUtil.Sort{ ;zD4 #7=  
}a~hd*-#  
/* (non-Javadoc) '&#gs P9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SKnYeT  
*/ JRFUNy1+e1  
public void sort(int[] data) { O |P<s+  
int temp; +8N6tw/&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !^su=c  
if(data[j] SortUtil.swap(data,j,j-1); =VuSi(d;e{  
} p5or"tK  
} M;ADL|  
} ~:T@SrVI  
} LPJ7V` !k  
b=:ud[h  
} 04;s@\yX4  
X]@"ZV[  
选择排序: *4`5&) `  
k"&o)*d  
package org.rut.util.algorithm.support; TK\3mrEI  
' :B;!3a0d  
import org.rut.util.algorithm.SortUtil; -~ ~h1  
r\ft{Z<P  
/** MU a[}?  
* @author treeroot QE[<Y3M  
* @since 2006-2-2 .aY $-Y<  
* @version 1.0 !KK`+ 9/  
*/ c5WMN.z  
public class SelectionSort implements SortUtil.Sort { pl&nr7\  
ur'<8pDb$  
/* Kh$"5dy  
* (non-Javadoc) #Iz)Mu  
* .UL 2(0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %hYgG;22  
*/ U0j>u*yE  
public void sort(int[] data) { eP>_CrJb  
int temp; ;i6~iLY  
for (int i = 0; i < data.length; i++) { H"AL@=  
int lowIndex = i; C&w0HoF  
for (int j = data.length - 1; j > i; j--) { g[pU5%|"[  
if (data[j] < data[lowIndex]) { [%dsq`b#  
lowIndex = j; m- <y|3  
} m#RJRuZ|2V  
} +X^GS^mz  
SortUtil.swap(data,i,lowIndex); Q NMZR  
} lY tt|J  
} zG ='U  
>t cEx(  
} 8~C}0H  
m1%rm-M  
Shell排序: d[3me{Rs  
gE\ ^ vaB  
package org.rut.util.algorithm.support; %BkE %ZcZ  
ch0^g8@Q[  
import org.rut.util.algorithm.SortUtil; $"/l*H\h  
T"Y#u  
/** I &iyj 99n  
* @author treeroot x7zc3%T's  
* @since 2006-2-2 ?;W"=I*3  
* @version 1.0 GE!nf6>Km  
*/ :;e OhZ=_  
public class ShellSort implements SortUtil.Sort{ EZB0qZIp  
xQvI$vP  
/* (non-Javadoc) # atq7t X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iw,uwh|L  
*/ (v/L   
public void sort(int[] data) { 4%r?(C0x  
for(int i=data.length/2;i>2;i/=2){ a[~[l k=7  
for(int j=0;j insertSort(data,j,i); &EV%g6  
} s|<n7 =J  
} [m:cO6DM,  
insertSort(data,0,1); 7Fo^ :"  
} aF?_V!#cT  
vf3)T;X>  
/** geyCS3 :p  
* @param data Lbz/M _G  
* @param j @QmN= X5  
* @param i Gxe)5,G  
*/ i`F5  
private void insertSort(int[] data, int start, int inc) { ZiuD0#"!  
int temp; C%yH}T\s  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); As)?~dV  
} F!#)l*OX;  
} im &N &A  
} Zt9G[[]  
D*-  
} yP$esDP  
(9%?ik  
快速排序: =_k  
8wkhbD|;  
package org.rut.util.algorithm.support; r[Pp[ g-J  
3\m !  
import org.rut.util.algorithm.SortUtil; O.Pp*sQ^  
++,I`x+p  
/** A` _dj}UF  
* @author treeroot 6t;;Fz  
* @since 2006-2-2 q("XS  
* @version 1.0 y60aJ)rAX  
*/ j%'2^C8  
public class QuickSort implements SortUtil.Sort{ ^oPFLez56  
_=I1  
/* (non-Javadoc) 'hr_g* i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M%ecWr!tj  
*/ apm%\dN  
public void sort(int[] data) { L3I$ K+c  
quickSort(data,0,data.length-1); ZskX!{  
} OlyW/hd  
private void quickSort(int[] data,int i,int j){ K9xvog  
int pivotIndex=(i+j)/2; #>aq'47j  
file://swap +g?uvXC&  
SortUtil.swap(data,pivotIndex,j); > .NLmzUX  
e+BZoK ^  
int k=partition(data,i-1,j,data[j]); Z OPK  
SortUtil.swap(data,k,j); I=&i &6v8G  
if((k-i)>1) quickSort(data,i,k-1); H3$py|}lL  
if((j-k)>1) quickSort(data,k+1,j); A!!!7tj  
xT&~{,9  
} ?QffSSj[s  
/** b(N\R_IQ~  
* @param data Wx-0Ip'9  
* @param i !~C%0{9+u@  
* @param j Nxt:U{`T'  
* @return _}p [(sTV  
*/ >+7{PF+sB  
private int partition(int[] data, int l, int r,int pivot) { ] hK}ASC  
do{ Mu/(Xp62  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :u9'ZHkZ  
SortUtil.swap(data,l,r); DQ+6VPc^o  
} e4=FO;%  
while(l SortUtil.swap(data,l,r); xRc+3Z= N  
return l; 6ZE`'pk<  
} =At" Q6-O  
%R?7u'=~  
} 3\}u#/Vb  
)lLeL#]FLO  
改进后的快速排序: 7Q|<6210  
:8O T  
package org.rut.util.algorithm.support; 8:c=h/fa  
v zs4tkG  
import org.rut.util.algorithm.SortUtil; fWJpy#/^*K  
toGd;2rl  
/** ?0:]% t18  
* @author treeroot tx d0S!  
* @since 2006-2-2 Z#@  
* @version 1.0 Zfk]Z9YO  
*/ 2LN6pu  
public class ImprovedQuickSort implements SortUtil.Sort { X7-*`NI^  
A"pQOtrm\k  
private static int MAX_STACK_SIZE=4096; _Vp"G)1Y  
private static int THRESHOLD=10; *y?6m,38V  
/* (non-Javadoc) 0^S$_L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DcBAncsK  
*/ (y; 6 H  
public void sort(int[] data) { stK}K-=`  
int[] stack=new int[MAX_STACK_SIZE]; 0'6ai=W  
v@QnS  
int top=-1; 9NwUX h(:(  
int pivot; `l'T/F \  
int pivotIndex,l,r; `PAQv+EYz  
t<fah3hl  
stack[++top]=0; [c=P)t7 V  
stack[++top]=data.length-1; yq|yGf(4&  
gk| % 4.  
while(top>0){ !`N:.+DT  
int j=stack[top--]; pnSKIn  
int i=stack[top--]; ZMlBd}H  
OR6vA5J  
pivotIndex=(i+j)/2; :z P:4 NW  
pivot=data[pivotIndex]; ^BLO}9A{P  
1_S]t[?I/  
SortUtil.swap(data,pivotIndex,j); xz0t8`N oN  
c=+%][21  
file://partition V~*>/2+  
l=i-1; (U# ,;  
r=j; G@Z%[YNw  
do{ .n8O 3V  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +&)/dHbL`]  
SortUtil.swap(data,l,r); #z>I =gl  
} Pl/Xh03E  
while(l SortUtil.swap(data,l,r); *K_8=TIA*  
SortUtil.swap(data,l,j); 0IqGy}+VU  
d6*84'|!  
if((l-i)>THRESHOLD){ >6yQuB  
stack[++top]=i; ^G`6Zg;  
stack[++top]=l-1; l4i 51S"  
} GdUsv  
if((j-l)>THRESHOLD){ Wap4:wT  
stack[++top]=l+1; {.kIC@^O  
stack[++top]=j; 'gor*-o:wu  
} Kd 1=mC  
3'x>$5 W  
} v@Eb[7Kq/1  
file://new InsertSort().sort(data); 6M&ajl`o  
insertSort(data); %XN;S29d5W  
} ]cP%d-x}  
/** zAM9%W2v_  
* @param data @~s5{4  
*/ dakHH@Q  
private void insertSort(int[] data) { 5'f_~>1Wt  
int temp; Dti-*LB1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PTe$dPB  
} 5P<1I7d  
} 0vLx={i  
} 1J1Jp|j.  
*A!M0TK?i,  
} A4(L47^  
XM!oN^  
归并排序: "Cxj_V@\  
16eP7s  
package org.rut.util.algorithm.support; [dLc+h1{B  
6!0NFP~b  
import org.rut.util.algorithm.SortUtil; _YR#J%xa  
eD7\,}O  
/** KL?<lp"  
* @author treeroot |0F o{  
* @since 2006-2-2 8*&-u +@%  
* @version 1.0 B/3~[ '  
*/ }N -UlL(  
public class MergeSort implements SortUtil.Sort{ XelFGTE  
W (TTsnnx  
/* (non-Javadoc) .(Ux1.0C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >.P* lT  
*/ qU6!vgM&  
public void sort(int[] data) { gmu.8  
int[] temp=new int[data.length]; b/*QV0(  
mergeSort(data,temp,0,data.length-1); q*R~gEi#yk  
} ,B;mG]_  
n%;qIKnIq\  
private void mergeSort(int[] data,int[] temp,int l,int r){ "?k'S{;  
int mid=(l+r)/2; +,"[0RH  
if(l==r) return ; fXnTqKAfu6  
mergeSort(data,temp,l,mid); _Q^jk0K8ga  
mergeSort(data,temp,mid+1,r); =aj|auu  
for(int i=l;i<=r;i++){ 0e"KdsA:<U  
temp=data; "Vc|D (g  
} bZWR. </  
int i1=l; YdvXp/P:|  
int i2=mid+1; X)]>E]X  
for(int cur=l;cur<=r;cur++){ !V#*(_+n  
if(i1==mid+1) pHVDug3  
data[cur]=temp[i2++]; /oe0  
else if(i2>r) @.cord`  
data[cur]=temp[i1++]; 6C.!+km  
else if(temp[i1] data[cur]=temp[i1++]; A<H]uQ>  
else nUONI+6Z/  
data[cur]=temp[i2++]; S|u5RU8*"|  
} mhIGunK;+  
} zB y%$5~Fw  
u]B b^[  
} L  ~Vw`C  
V^qBbk%l>D  
改进后的归并排序: :/? Op  
J.2BBy  
package org.rut.util.algorithm.support; gjT`<CW  
^+~$eg&js  
import org.rut.util.algorithm.SortUtil; y'f-4E<  
"AJ>pU3  
/** `$ bQ8$+Ci  
* @author treeroot jc6~V$3  
* @since 2006-2-2 nC/T$ #G  
* @version 1.0 \K9Y@jnr  
*/ Rbm+V{EF&  
public class ImprovedMergeSort implements SortUtil.Sort { "[A&S!  
[uie]*^  
private static final int THRESHOLD = 10; j }^?Snq  
rf$[8d  
/* \2@9k`  
* (non-Javadoc) )tV]h#4  
* $a\X(okx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tvzO)&)$  
*/ _jkJw2+s\  
public void sort(int[] data) { *X|%H-Q:H`  
int[] temp=new int[data.length]; Dh{P23}  
mergeSort(data,temp,0,data.length-1); 5.0;xz}#y  
} g+.E=Ef8<4  
>>J!|  
private void mergeSort(int[] data, int[] temp, int l, int r) {  :i?c  
int i, j, k; Qw% 0<~<  
int mid = (l + r) / 2; Z#%77!3  
if (l == r) Pd  6  
return; *=E4|>Ul,  
if ((mid - l) >= THRESHOLD) 0\$Lnwp_  
mergeSort(data, temp, l, mid); :]C\DUBo  
else [MC}zd'/  
insertSort(data, l, mid - l + 1); 8^-g yx'  
if ((r - mid) > THRESHOLD) 8r\xQr'8h  
mergeSort(data, temp, mid + 1, r); . 55aY~We  
else Yic'p0< ?V  
insertSort(data, mid + 1, r - mid); i3Nt?FSN  
+xmZK<{<  
for (i = l; i <= mid; i++) { Git2Cet  
temp = data; SR)@'-Wd  
} '?fn} V  
for (j = 1; j <= r - mid; j++) { Yu^}  
temp[r - j + 1] = data[j + mid]; v g tJ+GjN  
} [iSLn3XXRX  
int a = temp[l]; x~yd/ R  
int b = temp[r]; [qt^gy)  
for (i = l, j = r, k = l; k <= r; k++) { v#sx9$K T  
if (a < b) { 0j/i):@  
data[k] = temp[i++]; ~ YZi"u  
a = temp; 8>:2li  
} else { HoM8V"8B  
data[k] = temp[j--]; VxAR,a1+n  
b = temp[j]; J Y> I  
} wIbc8ze  
} C$B?|oUJc  
} VHws9)  
]Otl(\v(h  
/** \=~<I  
* @param data gwF@'Uu  
* @param l !lB,2_  
* @param i q%^gG03.  
*/ }W%}_UT  
private void insertSort(int[] data, int start, int len) { U(qM( E  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z<P#dj x  
} {la ^useg[  
} R ?\8SdJ  
} Un[#zh<4  
} &jPsdv h  
gzdgnF2  
堆排序: 8|Y^z_C  
~yf5$~Z  
package org.rut.util.algorithm.support; Z#W`0G>'  
@49^WY  
import org.rut.util.algorithm.SortUtil; ^jhHaN]G^  
7y`~T+  
/** &c@I4RV|q  
* @author treeroot ZNA?`Z)f  
* @since 2006-2-2 ?,),%JQ  
* @version 1.0 ]g+(#x_.?  
*/ IweQB}d  
public class HeapSort implements SortUtil.Sort{ qx? lCz a"  
z?YGE iR/}  
/* (non-Javadoc) cRfX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s^v,i CH {  
*/ KoXXNJax  
public void sort(int[] data) { J<zg 'Jk^  
MaxHeap h=new MaxHeap(); 4Y/!V[  
h.init(data); uc"u@ _M  
for(int i=0;i h.remove(); wLUmRo56aR  
System.arraycopy(h.queue,1,data,0,data.length); >zhbipA  
}  3i$AR  
F;NZJEy  
private static class MaxHeap{ mg;AcAS.o,  
i\eykYc,  
void init(int[] data){ XAFTLNV>  
this.queue=new int[data.length+1]; O@Kr}8^,  
for(int i=0;i queue[++size]=data; Ua3ERBX{  
fixUp(size); BR%:`uiQ<  
} (c_hX(  
} ^ pR&  
a:]yFi:Su  
private int size=0; Zj<T#4?8  
Q\z*q,^R  
private int[] queue; |Z/ySAFM  
&boBu^,94  
public int get() { q.X-2jjpx:  
return queue[1]; (6+0U1[Iz  
} tE>:kx0*3  
J8D-a!  
public void remove() { QBo^{],  
SortUtil.swap(queue,1,size--); tr}$82Po  
fixDown(1); wLbns qa  
} Y{'G2)e  
file://fixdown Stw6%T-  
private void fixDown(int k) { y|mR'{$I  
int j; Q& \k"X1  
while ((j = k << 1) <= size) { v>P){VT  
if (j < size %26amp;%26amp; queue[j] j++; ?d%}K76V<  
if (queue[k]>queue[j]) file://不用交换 ixkg,  
break; 0nd<6S+fs  
SortUtil.swap(queue,j,k); MLb\:Ihy  
k = j; G j:|  
} t8[:}[Jx  
} [6tQv<}^  
private void fixUp(int k) { @'y"D  
while (k > 1) { $7*Ml)H!9  
int j = k >> 1; vtT:c.~d  
if (queue[j]>queue[k]) & Gt9a-ne  
break; +Snjb0  
SortUtil.swap(queue,j,k); :4Vt  
k = j; g<-cHF  
} }A;Xd/,'r  
} 33 4*nQ  
wDG4rN9x  
} KKzvoc?Bt  
'huLv(Uu  
} RPWYm  
ro{MD s  
SortUtil: $p@g#3X`  
h^)2:0#{I  
package org.rut.util.algorithm; dd+).*  
xVP GlU  
import org.rut.util.algorithm.support.BubbleSort; I|:j~EY  
import org.rut.util.algorithm.support.HeapSort; aU!UY(  
import org.rut.util.algorithm.support.ImprovedMergeSort; @mazwr{B  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1,J.  
import org.rut.util.algorithm.support.InsertSort; x@ O:  
import org.rut.util.algorithm.support.MergeSort; $b$D[4  
import org.rut.util.algorithm.support.QuickSort; }R x%&29&  
import org.rut.util.algorithm.support.SelectionSort; {%Y7]*D  
import org.rut.util.algorithm.support.ShellSort; ;sf/tX  
+A3 H#'  
/** a*8}~p,  
* @author treeroot ;F Bc^*q  
* @since 2006-2-2 H#y"3E<s  
* @version 1.0 B+LNDnjO]  
*/ V_kE"W)  
public class SortUtil { sFTIRVXN,  
public final static int INSERT = 1; Y(f-e,  
public final static int BUBBLE = 2; xd3  
public final static int SELECTION = 3; 2o/`8+eJu  
public final static int SHELL = 4; Fqv5WoYVf  
public final static int QUICK = 5; F8I <4S  
public final static int IMPROVED_QUICK = 6; @n(In$  
public final static int MERGE = 7; ZJ(!jc$"*%  
public final static int IMPROVED_MERGE = 8; v=>Gvl3&U  
public final static int HEAP = 9; URgF8?n  
pS \>X_G3  
public static void sort(int[] data) { AngwBZ@  
sort(data, IMPROVED_QUICK); I'C ,'  
} :Eyv==  
private static String[] name={ 5,Y2Lzr  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K;PpS*!  
}; M=A9a x  
%U 7B0-  
private static Sort[] impl=new Sort[]{ 1c!},O  
new InsertSort(), ~}*;Ko\  
new BubbleSort(), 0Pk-FSY|f  
new SelectionSort(), B .mV\W  
new ShellSort(), U:9vjY  
new QuickSort(), (% P=#vZ  
new ImprovedQuickSort(), Ev16xL8B  
new MergeSort(), *zWn4BckN  
new ImprovedMergeSort(), v3Yj2LSqx  
new HeapSort() bB-v ar  
}; ,0bM* qob  
}[`?#`sW  
public static String toString(int algorithm){ t,,^^ll  
return name[algorithm-1]; v"+EBfx  
}  $wTX  
b3lpNJ J  
public static void sort(int[] data, int algorithm) { KoJG! Rm  
impl[algorithm-1].sort(data); r `dU (T!  
} -huZnDN  
!%r`'|9y  
public static interface Sort { @ `D6F;R  
public void sort(int[] data); s_!Z+D$K  
} ~x:] ch|  
-; $/<  
public static void swap(int[] data, int i, int j) { =1 \wZuK#  
int temp = data; .<%M8rcj  
data = data[j]; ud D[hPJd  
data[j] = temp; GcW}<g}  
} bf/loMtD  
} ?y)X$D^  
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