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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。 jz%%r Q(  
插入排序: .}>DEpc:n  
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package org.rut.util.algorithm.support; ~EVD NnHEr  
a;Q.R  
import org.rut.util.algorithm.SortUtil; q.l" Y#d  
/** Fx.hti  
* @author treeroot +d0&(b  
* @since 2006-2-2 \WnI&nu  
* @version 1.0 J<<0U;  
*/ <= xmJx-V  
public class InsertSort implements SortUtil.Sort{ +|N!(H  
,[lS)`G  
/* (non-Javadoc) ix<sorR H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k#I4^  
*/ S&A, Q'  
public void sort(int[] data) { JwNG`M Gc  
int temp; K>2mm!{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _Kp{b"G  
} Ccw6,2`&  
} s 9,?"\0Zm  
} @"9^U_Qf1z  
n y7 G  
} $W 46!U3  
J2BW>T!tuw  
冒泡排序: MjAF&bD^  
]E1aIt  
package org.rut.util.algorithm.support; 0B^0,d(s  
CF`tNA3fxm  
import org.rut.util.algorithm.SortUtil; ik@g;>pQD  
;hz"`{(JY  
/** <|_/i/H  
* @author treeroot }vRs n-E@  
* @since 2006-2-2 >bia FK>t  
* @version 1.0 bY4~\cP.  
*/ 3d^zLL  
public class BubbleSort implements SortUtil.Sort{ sD,[,6(  
xD}ha  
/* (non-Javadoc) 2},|RQETy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )p&FDK#ob=  
*/ ;O*y$|+PA  
public void sort(int[] data) { NJG-~ w  
int temp; A#gmKS<J/7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7u"t4Or  
if(data[j] SortUtil.swap(data,j,j-1); e~C^*wL  
} 9Z,vpTE  
} }b-"[TDEF  
} N:j"W,8  
} $6~D 2K  
Y|t]bb  
} bJJB*$jW=  
}LDH/# u  
选择排序: [-X=lJ:+h  
aHosu=NK  
package org.rut.util.algorithm.support; Ctpr.  
bDa(@QJ-  
import org.rut.util.algorithm.SortUtil; #{)=%5=c  
i]:T{2  
/** 2f8fA'|O  
* @author treeroot `B{N3Kxbp  
* @since 2006-2-2 wf!?'*  
* @version 1.0 ^zv0hGk2  
*/ ?lJm}0>  
public class SelectionSort implements SortUtil.Sort { KLW#+vZ  
7q>WO  
/* HhN;&67~Z  
* (non-Javadoc) .'md `@t  
* p/|]])2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ozZW7dveU  
*/ %oas IiO  
public void sort(int[] data) { 'u }|~u?m  
int temp; SomA`y+ERn  
for (int i = 0; i < data.length; i++) { Y/1KvF4)k  
int lowIndex = i; WQ/H8rOs  
for (int j = data.length - 1; j > i; j--) { hr&&"d {s  
if (data[j] < data[lowIndex]) { m}\G.$h4  
lowIndex = j; ;/$=!9^sZ  
} D2o,K&V  
} 3fJ GJW!zu  
SortUtil.swap(data,i,lowIndex); f>k<I[C<  
} Zgt:ZO  
} kB-%T66\  
[A?Dx-R;(  
} `+_UG^aeW  
-lr)z=})  
Shell排序: eMk?#&a)  
D9 ~jMcX  
package org.rut.util.algorithm.support; rPVz !(;k  
p\]Mf#B  
import org.rut.util.algorithm.SortUtil; ;Wa4d`K  
aZt5/|B  
/** 8RJXY:%  
* @author treeroot 1 "'t5?XW  
* @since 2006-2-2 lf4V; |!^  
* @version 1.0 4,CQJ  
*/ w] b3,b  
public class ShellSort implements SortUtil.Sort{ ~1&%,$fZ  
P?GHcq$\  
/* (non-Javadoc) ~^((tT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  LAG*H  
*/ L&O!"[++  
public void sort(int[] data) { Az.(tJ X"  
for(int i=data.length/2;i>2;i/=2){ 5z8CUDt 0  
for(int j=0;j insertSort(data,j,i); n?vw|'(}  
} %~`8F\Hiu  
} ]J;pUH+u  
insertSort(data,0,1); \ .+.VK  
} 0|<ER3xkx  
vzl+0"  
/** tu}AJ  
* @param data uMl.}t2uYu  
* @param j *I)o Dq3  
* @param i =e'b*KTL,  
*/ GxWA=Xp^~G  
private void insertSort(int[] data, int start, int inc) { W]kh?+SZ  
int temp; FB {4& ;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vL"U=Q+/eY  
} }oH A@o5  
} '@)47]~  
} %?K1X^52d  
gqR?hZD  
} M>hHTa?W  
,7:_M> -3g  
快速排序: qkB)CY7  
t(69gF\"  
package org.rut.util.algorithm.support; <Cc}MDM604  
@vWf-\  
import org.rut.util.algorithm.SortUtil; nQ4s  
@!z9.o;  
/** VT1Nd  
* @author treeroot J(+I`  
* @since 2006-2-2 <fq?{z  
* @version 1.0 Jolr"F?  
*/ E)liuu! qI  
public class QuickSort implements SortUtil.Sort{ OYKeu(=L  
OZ\]6]L  
/* (non-Javadoc) Ei!5Qya>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dn0?#=  
*/ ]m} <0-0  
public void sort(int[] data) { jj^{^,z\  
quickSort(data,0,data.length-1); >vE1,JD)w  
} yi`Z(j;  
private void quickSort(int[] data,int i,int j){ pp{Za@j  
int pivotIndex=(i+j)/2; jQjtO"\JG  
file://swap rb_ cm  
SortUtil.swap(data,pivotIndex,j); jEr/*kv  
e%#(:L  
int k=partition(data,i-1,j,data[j]); 6x%uWZa'  
SortUtil.swap(data,k,j); u4QPO:,a4  
if((k-i)>1) quickSort(data,i,k-1); b#%s!  
if((j-k)>1) quickSort(data,k+1,j); @i`*i@g  
~IvAnwQ'  
} iHy=92/Ww  
/** rblEyCR  
* @param data &6%%_Lw$  
* @param i 1 FTxbw@  
* @param j -QR&]U+  
* @return =Q985)Y&  
*/ U X)k;h  
private int partition(int[] data, int l, int r,int pivot) { &|('z\k  
do{ n(^{s5 Rr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :G$f)NMK  
SortUtil.swap(data,l,r); =!{7ZSu\  
} FG.MV-G  
while(l SortUtil.swap(data,l,r); jt|e?1:vF  
return l; $_s"16s  
} l \~w(8g<A  
k(|D0%#b7  
} 69{^Vfd;Y  
JjarMJr| D  
改进后的快速排序: nb}*IExd  
+*"u(7AV  
package org.rut.util.algorithm.support; y.6D Z  
nO^aZmSu  
import org.rut.util.algorithm.SortUtil; "N'tmzifh  
emp*j@9  
/** a4HUP*  
* @author treeroot H^ _[IkuA%  
* @since 2006-2-2 }RX[J0Prq~  
* @version 1.0 L&3Ak}sh  
*/ l}-JtZ?[?  
public class ImprovedQuickSort implements SortUtil.Sort { p/jC}[$v  
@]r,cPx0Y  
private static int MAX_STACK_SIZE=4096; H8d%_jCr  
private static int THRESHOLD=10; *FoH '\=  
/* (non-Javadoc) ~"eos~AuW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZMO7 o 1"  
*/ G+Ft2/+\  
public void sort(int[] data) { A:$Qt%c  
int[] stack=new int[MAX_STACK_SIZE]; 5Ug.J{d  
df_hmkyj  
int top=-1; X yi[z tN  
int pivot; 7J@iJW],,  
int pivotIndex,l,r; g?,\bmHE  
~#/NpKHT@A  
stack[++top]=0; J})G l  
stack[++top]=data.length-1; f 7B)iI!  
=0,:w(Sb!  
while(top>0){ v'`VyXetl  
int j=stack[top--]; hM~9p{O  
int i=stack[top--]; 2pR+2p`  
:o$k(X7a  
pivotIndex=(i+j)/2; eSvS<\p  
pivot=data[pivotIndex]; b77Iw%x7  
oujg( ^E  
SortUtil.swap(data,pivotIndex,j); |F)BKo D  
Le#>uWM  
file://partition ,CiN@T \&  
l=i-1; 0 XV8 B  
r=j; ?wzE+p-  
do{ ~,[<R  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x6Q,$B  
SortUtil.swap(data,l,r); r;}%} /IX  
} LIfQh  
while(l SortUtil.swap(data,l,r); @=CN#D12  
SortUtil.swap(data,l,j); = GUgb2TAT  
 + ]I7]  
if((l-i)>THRESHOLD){ S<Z]gY @c  
stack[++top]=i; y;zp*(}f$h  
stack[++top]=l-1; Fc{M N"  
} $yG>=GN  
if((j-l)>THRESHOLD){ s;!TB6b@  
stack[++top]=l+1; ;Fw{p{7<  
stack[++top]=j; r8.R?5F@  
} lYz{# UX}  
m2wGg/F5  
} {%g]Ym=  
file://new InsertSort().sort(data); l /?Jp+]  
insertSort(data); %JUD54bBt  
} m x`QBJ  
/** $ ?ayE  
* @param data ?N*m2rv  
*/ E= 3Ui  
private void insertSort(int[] data) { -/ 5" Py  
int temp; | Q0Wv8/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qffVF|7  
} 3 !W M'i  
} CK4C:`YG  
} F@ Sw  
FbH 1yz  
} DZPg|*KT  
\NE~k)`4j%  
归并排序: ^{f ^%)X  
3d<Z##`{4  
package org.rut.util.algorithm.support; U^aMh-  
7p"4rL  
import org.rut.util.algorithm.SortUtil; )1#J4  
-U&k%X   
/** p6)Jzh_/  
* @author treeroot ?K5S{qG'O  
* @since 2006-2-2 v6uXik  
* @version 1.0 sa8Q1i&%  
*/ .%~m|t+Rt  
public class MergeSort implements SortUtil.Sort{ 9j'(T:Zs  
D(bQFRBY6"  
/* (non-Javadoc) B?bdHO:E~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #8xP,2&zf  
*/ [wp(s2=  
public void sort(int[] data) { Y.>F fL  
int[] temp=new int[data.length]; -8Z;s8ACo  
mergeSort(data,temp,0,data.length-1); gJ \CT'/  
} eI20)t`j  
,3+#?H  
private void mergeSort(int[] data,int[] temp,int l,int r){ UNK}!>HD  
int mid=(l+r)/2; X*'i1)_h  
if(l==r) return ; -@=As00Bg  
mergeSort(data,temp,l,mid); Epo/}y  
mergeSort(data,temp,mid+1,r); mKTE%lsH  
for(int i=l;i<=r;i++){ 3MqyHOOv  
temp=data; mbSG  
} yRd[ $p  
int i1=l; \0)v5u  
int i2=mid+1; 5~,usA*  
for(int cur=l;cur<=r;cur++){ ut SW>  
if(i1==mid+1) =}F}XSvXH  
data[cur]=temp[i2++]; <V} ec1  
else if(i2>r) ,,}& Q%5  
data[cur]=temp[i1++]; t3P$UR%  
else if(temp[i1] data[cur]=temp[i1++]; Qs\m"yx  
else GXk]u  
data[cur]=temp[i2++]; :'6vIPN5  
} ya`Z eQ-p  
} $p(  
K9\r2w'T'  
} ;W~H|M  
luvxwved  
改进后的归并排序: $kAal26z  
3Gk\3iU!  
package org.rut.util.algorithm.support; zG^|W8um_  
b8FSVV 7@  
import org.rut.util.algorithm.SortUtil; }0okyGg>q  
lf`" (:./  
/** ^*g= 65!1  
* @author treeroot @ zs.M-F  
* @since 2006-2-2 rS|nO_9f  
* @version 1.0 Iu V7~w  
*/ uW 7Yem&  
public class ImprovedMergeSort implements SortUtil.Sort { >f\$~cp  
uO^,N**R#  
private static final int THRESHOLD = 10; 7T69tQZ<  
E'g?44vyw  
/* . DrGr:UW  
* (non-Javadoc) >;s!X(6 b  
* u{J\X$]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zg}#X6\G<_  
*/ Xd 5vNmQn  
public void sort(int[] data) { 'QOV!D  
int[] temp=new int[data.length]; rbw~Ml0  
mergeSort(data,temp,0,data.length-1); y8.3tp  
} k-jlYHsA  
o;[cApiQ,2  
private void mergeSort(int[] data, int[] temp, int l, int r) { e'dx Y(  
int i, j, k; ]H-5    
int mid = (l + r) / 2; (F+]h]KSi  
if (l == r) zE8qU;  
return; |s!<vvp]  
if ((mid - l) >= THRESHOLD) {3@"}Eh  
mergeSort(data, temp, l, mid); KFhnv`a.0  
else j=kz^o~mH  
insertSort(data, l, mid - l + 1); ZCAg)/  
if ((r - mid) > THRESHOLD) ./qbWr`L  
mergeSort(data, temp, mid + 1, r); 7X{@$>+S  
else WupONrH1e  
insertSort(data, mid + 1, r - mid); $ ?*XPzZ  
Q$^)z_jai  
for (i = l; i <= mid; i++) { oK@_  
temp = data; v;.w*x8Jw  
}  ?QRoSQ6  
for (j = 1; j <= r - mid; j++) { XjFaP {  
temp[r - j + 1] = data[j + mid]; 4(mRLr%l@`  
} J;5G]$s  
int a = temp[l]; ],|;  
int b = temp[r]; f\u5=!kjN  
for (i = l, j = r, k = l; k <= r; k++) { MA+{7 [  
if (a < b) { nd)`G$gL  
data[k] = temp[i++]; jBr3Ay@<  
a = temp; .22}= z  
} else { 'GF<_3I2l  
data[k] = temp[j--]; 3kJ7aBiR<  
b = temp[j]; lz:+y/+1  
}  __Egr@  
} gg?O0W{  
} LZ4Z]!V  
_]Y9Eoz  
/** vSv:!5*  
* @param data j"Z9}F@  
* @param l '>Uip+'  
* @param i Hdda/?{b  
*/ zlhU[J}"1|  
private void insertSort(int[] data, int start, int len) { }>yQ!3/i  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 92D :!C  
} lEC91:Jyt  
} Ih_=yk  
} )YPu t.  
} czcsXBl[  
f)#nXTXeC  
堆排序: -~TgA*_5]  
|>v8yS5  
package org.rut.util.algorithm.support; MT^krv(G  
?'mi6jFFh  
import org.rut.util.algorithm.SortUtil; ? oQ_qleuo  
Y;1J` oT  
/** nV_[40KP_  
* @author treeroot ^$;5ZkQy  
* @since 2006-2-2 !=p^@N7  
* @version 1.0 .B_a3K4'{^  
*/ 115zvW  
public class HeapSort implements SortUtil.Sort{ :^J'_  
EMw biGV  
/* (non-Javadoc) fctVJ{?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t}fU 2Yb  
*/ G|LcTV  
public void sort(int[] data) { E>&oe&`o'  
MaxHeap h=new MaxHeap(); en8l:INX  
h.init(data); </li<1  
for(int i=0;i h.remove(); l.%[s6  
System.arraycopy(h.queue,1,data,0,data.length); 3h4'DQ.g  
} >mp" =Y  
]cP$aixd  
private static class MaxHeap{ G]E-2 _t7  
7NP Ny  
void init(int[] data){ mApl}I  
this.queue=new int[data.length+1]; @YI- @  
for(int i=0;i queue[++size]=data; BE,H`G #h  
fixUp(size); Nrfj[I  
} _<7e5VR  
} A08{]E#v>  
L=)Arj@q  
private int size=0; X0BBJ(e  
R zn%!d^$>  
private int[] queue; !^IAn  
x`Ik747^v  
public int get() { o]WG8Mo-  
return queue[1]; X@^"@  
} 7rjS.  
VN >X/  
public void remove() { Z:Nm9m  
SortUtil.swap(queue,1,size--); k(R&`  
fixDown(1); 3sz?49tX  
} i1-wzI  
file://fixdown  $&to(  
private void fixDown(int k) { }x+s5a;!3/  
int j; "dFuQB  
while ((j = k << 1) <= size) { ]7 2wv#-  
if (j < size %26amp;%26amp; queue[j] j++; hC2_Yr>N%  
if (queue[k]>queue[j]) file://不用交换 RrRE$g  
break; =Y<RG"]a&J  
SortUtil.swap(queue,j,k); nhI1`l&  
k = j; UO8./%'  
} [ |dQZ  
} .Eg[[K_iD  
private void fixUp(int k) { &/{x7;e  
while (k > 1) { 1ZRSeh  
int j = k >> 1; ['\ u?m  
if (queue[j]>queue[k]) {U7A&e0eW  
break; mqKr+  
SortUtil.swap(queue,j,k); ZfSAXr "(  
k = j; z|WDqB%/I  
} Nh+ZSV4WJ:  
} .>+jtp}  
p WLFJH}N  
} Ukg iSv+  
'`/w%OEVC5  
} O>Ao#_*hOb  
<"}WpT  
SortUtil: 3`> nQ4zC  
_sI\^yZd  
package org.rut.util.algorithm; XE.Y?{,R$  
Q??nw^8Hi  
import org.rut.util.algorithm.support.BubbleSort; \ 0aa0=  
import org.rut.util.algorithm.support.HeapSort; Q\{$&0McF  
import org.rut.util.algorithm.support.ImprovedMergeSort; `'}c- Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; +,A7XBn  
import org.rut.util.algorithm.support.InsertSort; ~4C:2  
import org.rut.util.algorithm.support.MergeSort; bT#re  
import org.rut.util.algorithm.support.QuickSort; X8| 0RU@f  
import org.rut.util.algorithm.support.SelectionSort; D?@e,e  
import org.rut.util.algorithm.support.ShellSort; @g==U{k;t  
7 J+cs^2  
/** 2` j#eB1  
* @author treeroot ,]8$QFf  
* @since 2006-2-2 Q(7M_2e7  
* @version 1.0 )ZQML0}P;  
*/ [;8vO=Z  
public class SortUtil { D_-<V,3t  
public final static int INSERT = 1; O"~BnA`dJ  
public final static int BUBBLE = 2; mZb[Fi  
public final static int SELECTION = 3; z\r|5Z  
public final static int SHELL = 4; *u?N{LkqS  
public final static int QUICK = 5; [I4&E >  
public final static int IMPROVED_QUICK = 6; c&u~M=EW  
public final static int MERGE = 7; J<=k [Q  
public final static int IMPROVED_MERGE = 8; iJem9XXb  
public final static int HEAP = 9; ;'xd8Jf  
=EdLffU[J  
public static void sort(int[] data) { v %GcNjZk5  
sort(data, IMPROVED_QUICK); wC4:OJ[d  
} &W:R#/|  
private static String[] name={ ;,Q6AS!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /;\{zA$uC=  
}; YMTB4|{  
*m 9,_~t  
private static Sort[] impl=new Sort[]{ 6d# V  
new InsertSort(), (v$$`zh  
new BubbleSort(), 1pHt3Vc(G  
new SelectionSort(), >5+]~[S  
new ShellSort(), &0QtHcXpR  
new QuickSort(), ^VAvQ(b!:i  
new ImprovedQuickSort(), gyAKjLqqpi  
new MergeSort(), FQGh+.U  
new ImprovedMergeSort(), ]eD5It\  
new HeapSort() L#X!.  
}; V=DT.u  
)3RbD#?  
public static String toString(int algorithm){ > Vvjs  
return name[algorithm-1]; L fx$M  
} K3($,aB}  
)Y:9sd8g7  
public static void sort(int[] data, int algorithm) { r%^J3  
impl[algorithm-1].sort(data); @[(<oX%  
} "f-z3kL  
2h^9lrQcQG  
public static interface Sort { I]OVzM  
public void sort(int[] data); E]26a,^L  
} b+qdl`V d  
A-XWG9nL  
public static void swap(int[] data, int i, int j) { \ 4r?=5v*  
int temp = data; X`E3lgfqT  
data = data[j]; 8!q$8]M  
data[j] = temp; .<|.nK`6  
} 9Di@r!Db  
} &*r'Sx )V  
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