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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。 X9HI@M]h  
插入排序: P0=F9`3wb  
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package org.rut.util.algorithm.support; i$bBN$<b<  
i\G3 u#  
import org.rut.util.algorithm.SortUtil; d]]qy  
/** qQ_QF  
* @author treeroot 6wgOmyJx  
* @since 2006-2-2 !A o?bs'  
* @version 1.0  2Mda'T8  
*/ x7?{*w&r  
public class InsertSort implements SortUtil.Sort{ |*$_eb  
i}19$x.D`  
/* (non-Javadoc) R7i*f/m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |sh  U  
*/ *$!LRmp?  
public void sort(int[] data) { jo~Pr  
int temp; /v[- KjTj7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0bE_iu>f'  
} j*{bM{~T<  
} kXWx )v  
} ]O."M"B  
c z|IBsa*  
} QS}=oOR@k  
0CROq}  
冒泡排序: )zN )7  
DYS(ZY)4  
package org.rut.util.algorithm.support; _*9Zp1r  
w9%gaK;  
import org.rut.util.algorithm.SortUtil; l- l}xBf  
CS/-:>s%  
/** 7@FB^[H:y  
* @author treeroot 9M<? *8)  
* @since 2006-2-2 :.cX3dP@  
* @version 1.0 gT.-Cf{  
*/ 5+UiAc$  
public class BubbleSort implements SortUtil.Sort{ nTAsy0p]  
?P5D!b:(  
/* (non-Javadoc) ^?2txLv,6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 61'7b`:(hi  
*/ AS7!FD6b  
public void sort(int[] data) { NQAnvX;  
int temp; ZZTV >:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -cKR15  
if(data[j] SortUtil.swap(data,j,j-1); ? _W*7<  
} ;VuIQ*@m"  
} >HFJm&lQ  
} ;Y"J j  
} UZ1 lI>  
&l Q j?]  
} [Ue>KG62=  
x\jHk}Buj  
选择排序: 3 *G=U  
r (uM$R$o  
package org.rut.util.algorithm.support; )oj`K,#  
=4zsAa  
import org.rut.util.algorithm.SortUtil; ]HRZ9oP  
a-3~HH  
/** vl#/8]0!  
* @author treeroot <fw[7=_)^  
* @since 2006-2-2 <ygO?m{  
* @version 1.0 7@sWT<P  
*/ te|VKYN%}[  
public class SelectionSort implements SortUtil.Sort { {b?)|@)is  
)6(mf2&  
/* 4MM#\  
* (non-Javadoc) TX>;2S3q   
* =y':VIVJC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gQ?k}D  
*/ ; etH)  
public void sort(int[] data) { yR`-rJb V  
int temp; WV8<gx`Q  
for (int i = 0; i < data.length; i++) { (p. 5J  
int lowIndex = i; r[gV`khka  
for (int j = data.length - 1; j > i; j--) { S2*:]pYf}  
if (data[j] < data[lowIndex]) { !B\\:k]aO^  
lowIndex = j; "-hgeQX  
} VHJr+BQ1K/  
} dlW w=^  
SortUtil.swap(data,i,lowIndex); qg>i8V  
} $]Q_x?  
} ?LZ)r^ger  
SQeQ"k|P%  
} ]\jhtC=2  
9Kqr9U--v  
Shell排序: =Xp 3UNXg  
_ pJU~8  
package org.rut.util.algorithm.support; 89L -k%R  
|6&"r&  
import org.rut.util.algorithm.SortUtil; Ad"::&&Wk  
nBNZ@nD  
/** #>233<  
* @author treeroot @}FRiPo6  
* @since 2006-2-2 wHAh6lm  
* @version 1.0 2/;KZ+U&  
*/ Kkd7D_bZ*  
public class ShellSort implements SortUtil.Sort{ -<|E bh d3  
/O8'8sL5  
/* (non-Javadoc) i P/I% D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,@P3!|  
*/ d>(dSKx  
public void sort(int[] data) { {L8SD U{P  
for(int i=data.length/2;i>2;i/=2){ t$}+oCnkv  
for(int j=0;j insertSort(data,j,i); s#d>yx_b  
} xd>2TW l#  
} t rHj7Nw  
insertSort(data,0,1); HHX9QebiST  
} 2bCa|HTv  
TzIgEn~  
/** 7$^V_{ej  
* @param data h IGa);g  
* @param j 9 /9,[A  
* @param i |C5i3?  
*/ @ #V31im"N  
private void insertSort(int[] data, int start, int inc) { yX8F^iv[  
int temp; 6/GhQ/T%D  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Sm-nb*ZyC  
} KYlWV<sR  
} YGxdYwBwf  
} EmLPq!C  
 R,y8~D  
} ,x_g|J _Y  
 s cn!,  
快速排序: z`TI<B  
{8t;nsdm!  
package org.rut.util.algorithm.support; ~)()PO  
9%)'QDVGLf  
import org.rut.util.algorithm.SortUtil; )`g[k" yB3  
Q(%uDUg%  
/** hzPpw.  
* @author treeroot .%*.nq  
* @since 2006-2-2 BL]^+KnP  
* @version 1.0 IPJs$PtKok  
*/ |FKo}>4  
public class QuickSort implements SortUtil.Sort{ }}ogdq  
#?aR,@n  
/* (non-Javadoc) 8o~\L= l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F.O2;M|x  
*/ :CH'Bt4<  
public void sort(int[] data) { KnbP@!+c  
quickSort(data,0,data.length-1); bG\1<:6B  
} =lVfrna  
private void quickSort(int[] data,int i,int j){ mTcLocx  
int pivotIndex=(i+j)/2; YP#OI 6u  
file://swap RPLr7Lb  
SortUtil.swap(data,pivotIndex,j); !lHsJ)t  
{5*+  
int k=partition(data,i-1,j,data[j]); W[YcYa_tQ  
SortUtil.swap(data,k,j); a z`5{hK  
if((k-i)>1) quickSort(data,i,k-1); ECl[v%R/6  
if((j-k)>1) quickSort(data,k+1,j); K5k,47"  
ib& |271gG  
} &\1Dy}:  
/** Rov0  
* @param data ^GL0|G=(1  
* @param i \)r#?qn4z;  
* @param j k 9s3@S  
* @return ,$CZ (GQ  
*/ }LE.kd&  
private int partition(int[] data, int l, int r,int pivot) { \*_qP*vq@  
do{ 4;%=ohD:!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 64zO%F*  
SortUtil.swap(data,l,r); k ^+h>B-;  
} CVu'uyy  
while(l SortUtil.swap(data,l,r); ncihc$V<  
return l; ]jM D'vg^b  
} f *)t<1f  
a)} ?rzT]  
} g%^Zq"  
6"gncB.  
改进后的快速排序: b}[{'  
.i`+}@iA  
package org.rut.util.algorithm.support; R[o KhU  
k%c ?$n"  
import org.rut.util.algorithm.SortUtil; /GCSC8T  
3):7mE(  
/** hu6)GOZbv  
* @author treeroot vW~_+:),e  
* @since 2006-2-2 X~W5Z(w(O  
* @version 1.0 #r0A<+t{T  
*/ !74*APPHR  
public class ImprovedQuickSort implements SortUtil.Sort { E6BW&Xp  
X/'B*y'=U  
private static int MAX_STACK_SIZE=4096; R'&^)_  
private static int THRESHOLD=10; Jb_/c``  
/* (non-Javadoc) a#KxjVM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QULrE+@  
*/ GAPZt4Z2  
public void sort(int[] data) { o1YhYA  
int[] stack=new int[MAX_STACK_SIZE]; 69rVW~Z  
.'>r?%a  
int top=-1; #16)7  
int pivot; `\#Q r|GC  
int pivotIndex,l,r; |h8C}P&Z  
OB5{EILej  
stack[++top]=0; x+%lNR  
stack[++top]=data.length-1; $g 5pKk  
IHf A;&b  
while(top>0){ c1b@3  
int j=stack[top--]; QZ h|6&yI  
int i=stack[top--]; |A &Nv~.)  
/V:%}Z  
pivotIndex=(i+j)/2; R"K{@8b  
pivot=data[pivotIndex]; )V~<8/)  
wG19NX(  
SortUtil.swap(data,pivotIndex,j); bm(0raugs  
>>K) 4HYID  
file://partition )HR'FlxOd  
l=i-1; F;`es%8  
r=j; ;Mw9}Reh@  
do{ (z+[4l7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SlsMMD  
SortUtil.swap(data,l,r); 9OP d'f  
} pcm|  
while(l SortUtil.swap(data,l,r); 2VMau.eQ  
SortUtil.swap(data,l,j); aRj3TtFh  
Km pX^Se[  
if((l-i)>THRESHOLD){ Yb414K  
stack[++top]=i; u=k\]W-  
stack[++top]=l-1; QMHeU>  
} 9JP{F  
if((j-l)>THRESHOLD){ G2rxr  
stack[++top]=l+1; @^#y23R U  
stack[++top]=j; :cIE8<\%  
} Y"G$^3% (]  
K\=bpc"Fy  
} $kkdB,y  
file://new InsertSort().sort(data); t55CT6Se  
insertSort(data); ]Cbht\Ag"  
} R+rHa#M_  
/** .|x0du|  
* @param data I3s'44  
*/ *s;$`8fM<  
private void insertSort(int[] data) { Lp1wA*  
int temp; nr-VzF7zu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HwM:bY N  
} "yL&?B"9@  
} L.ndLd  
} oKzV!~{0M;  
|oPqX %?  
} t[)z/[ m  
Q]a5]:0  
归并排序: ]N2'L!4|;  
.oAg (@^6  
package org.rut.util.algorithm.support; aN%t>*?Xa  
rx|/]NE;  
import org.rut.util.algorithm.SortUtil; }# w>>{Q  
SS(jjpe&,  
/** wp.'M?6`L  
* @author treeroot \ 1ys2BX  
* @since 2006-2-2 qt/"$6]%  
* @version 1.0 K31Fp;K  
*/ {RwwSqJ  
public class MergeSort implements SortUtil.Sort{ HgduH::\#  
9tk}_+  
/* (non-Javadoc) T*|?]k 8@*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Q>:g"_  
*/ 0v+5&Jk  
public void sort(int[] data) { kZPj{^c:  
int[] temp=new int[data.length]; };29'_.."x  
mergeSort(data,temp,0,data.length-1); ?8YHz  
} )1lYfJ  
-wvJZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ j%~UU0(J  
int mid=(l+r)/2; h9g5W'.#  
if(l==r) return ; ctH`71Y  
mergeSort(data,temp,l,mid); tv\P$|LV`8  
mergeSort(data,temp,mid+1,r); SYa!IL-B  
for(int i=l;i<=r;i++){ Kgk9p`C(  
temp=data; 0y2iS' t  
} |F9/7 z\5+  
int i1=l; vA(3H/)-  
int i2=mid+1; TX*s T  
for(int cur=l;cur<=r;cur++){ j"}alS`-  
if(i1==mid+1) -%%2Pz0I  
data[cur]=temp[i2++]; j31 Sc3vG  
else if(i2>r) [eG- &u  
data[cur]=temp[i1++]; 5x4(5c5^  
else if(temp[i1] data[cur]=temp[i1++]; @0n #Qs|E!  
else GMB%A  
data[cur]=temp[i2++]; lZ/Yp~2S  
} wR>\5z )^  
} {IqbO>|"O_  
:+!hR4Z~\;  
} [$-y8`~(  
&ATjDbW*(  
改进后的归并排序: y;sr# -L  
FkKx~I:  
package org.rut.util.algorithm.support; 0dXZd2oK@  
WElB,a-RCp  
import org.rut.util.algorithm.SortUtil; oy/#,R_n%  
wQ4/eQ*  
/** AGPZd9  
* @author treeroot txTDuS  
* @since 2006-2-2 6M259*ME  
* @version 1.0 g%[lUxL  
*/ OC"W=[Myl  
public class ImprovedMergeSort implements SortUtil.Sort { won%(n,HT  
/v=MGX@r  
private static final int THRESHOLD = 10; ;Fp"]z!Qh+  
Be0P[v  
/* /':kJOk<[  
* (non-Javadoc) )P\ec  
* RUSBJsMB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AqE . TK  
*/ c KF 8(  
public void sort(int[] data) { ;]vE"Mx$  
int[] temp=new int[data.length]; ~{RXc+  
mergeSort(data,temp,0,data.length-1); o!\Vk~Vi&  
} X;ijCZb3b  
lN{-}f;TN  
private void mergeSort(int[] data, int[] temp, int l, int r) { <E!M<!h  
int i, j, k; <|s|6C  
int mid = (l + r) / 2; >g8Tl`P,iN  
if (l == r) kCLz@9>FQ  
return; m~#98ZJ^  
if ((mid - l) >= THRESHOLD) Z5_U D  
mergeSort(data, temp, l, mid); fh}\#WE"  
else iI&J_Y{1a_  
insertSort(data, l, mid - l + 1); E3;[*ve  
if ((r - mid) > THRESHOLD) hSo\  
mergeSort(data, temp, mid + 1, r); ON] z-  
else 'SvYZ0ot  
insertSort(data, mid + 1, r - mid); "*XR'9~7  
2c_#q1/Z/  
for (i = l; i <= mid; i++) { 0bS\VUB(  
temp = data; (lTM^3 }  
} g}P.ksM  
for (j = 1; j <= r - mid; j++) { Abd&p N  
temp[r - j + 1] = data[j + mid]; Nt'(JAZ;  
} Q V4{=1A  
int a = temp[l]; *:aJlvk  
int b = temp[r]; Ql3hq.E  
for (i = l, j = r, k = l; k <= r; k++) { 7b \HbgZ  
if (a < b) { !T#~.QP4  
data[k] = temp[i++]; wh[XJ_xY  
a = temp; 2u/~#Rt&*  
} else { : H0+}=  
data[k] = temp[j--]; RU>T?2  
b = temp[j]; BC 9rsb  
} ^CDQ75tR  
} 59F AhEg  
} xQ-]Iw5  
CES^ c-. k  
/** +F]X  
* @param data q6%jCt2'  
* @param l 4b,N"w{v  
* @param i <A;R%\V  
*/ )apqL{u:=  
private void insertSort(int[] data, int start, int len) { wm=!tx\`k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4 B"tz!  
} ^} %Oq P  
} `lRZQ:27X  
} W}50E.\#  
} 5<0&y3  
f-E]!\Pg  
堆排序: qfd/t<?|D  
ogtKj"a  
package org.rut.util.algorithm.support; 3<88j&9  
Mm;kB/ 1  
import org.rut.util.algorithm.SortUtil; jSsbLa@  
BA4qQCS;5  
/** /59jkcA+  
* @author treeroot f R$E*Jd  
* @since 2006-2-2 zWb>y  
* @version 1.0 dq+VW}[EO  
*/ wf)T-]e  
public class HeapSort implements SortUtil.Sort{ *yN+Xm8o  
lfba   
/* (non-Javadoc) j7IX"O%f\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q=}p P*  
*/ fI9 TzpV  
public void sort(int[] data) { 0>} FNRC  
MaxHeap h=new MaxHeap(); 8=Xy19<;t  
h.init(data); oJE~dY$Q  
for(int i=0;i h.remove(); 9lbe[w @  
System.arraycopy(h.queue,1,data,0,data.length); ebxpKtEC  
} o?BcpWp  
kq&xH;9=.  
private static class MaxHeap{ 1S/KT4  
F)Oe;z6  
void init(int[] data){ `O4Ysk72x9  
this.queue=new int[data.length+1]; FH:^<^M  
for(int i=0;i queue[++size]=data; ca%s$' d  
fixUp(size); e"Kg/*Ji1  
} 9. :r;HG  
} 8,d<&3D  
DC4O@"  
private int size=0; 29p`G1n  
=|_:H$94  
private int[] queue; MHar9)$}  
}i0(^"SoXZ  
public int get() { "& h;\hL  
return queue[1]; :)hS-*P  
} E:'TZ4Z  
/Z`("X?_Kf  
public void remove() { EX zA(igS  
SortUtil.swap(queue,1,size--); tl5}#uJ  
fixDown(1); M#ED49Dh>  
}  ntK#7(U'  
file://fixdown ,rkY1w-  
private void fixDown(int k) { pD;'uEFBQ  
int j; 2 u:w  
while ((j = k << 1) <= size) { ?XOl>IO  
if (j < size %26amp;%26amp; queue[j] j++; 3<">1] /,  
if (queue[k]>queue[j]) file://不用交换 h r9rI  
break; \[u7y. b  
SortUtil.swap(queue,j,k); 0* 7N=  
k = j; 2 |]pD  
} 9C9>V]  
} "*E06=fiG  
private void fixUp(int k) { )*6 ]m1  
while (k > 1) { $hv o^$  
int j = k >> 1; Fb8~2N"3  
if (queue[j]>queue[k]) zb<YYJ]  
break; BCUn[4Gp  
SortUtil.swap(queue,j,k); ~\HGV+S!g}  
k = j; .%Pt[VQ  
} D3,9X#B=  
} !Miw.UmPm  
]nmVT~lBe"  
} y$-;6zk\]  
G!Gbg3:4e5  
} Rb!V{jQ  
G_m$W3 zS  
SortUtil: :<Z>?x  
z _A]mJ  
package org.rut.util.algorithm; 9:[L WT&  
X1LwIa>  
import org.rut.util.algorithm.support.BubbleSort; `Ckx~'1M:  
import org.rut.util.algorithm.support.HeapSort; 1^R[kaY  
import org.rut.util.algorithm.support.ImprovedMergeSort; ) H HBf<  
import org.rut.util.algorithm.support.ImprovedQuickSort; 8Qm%T7]UFb  
import org.rut.util.algorithm.support.InsertSort; Lt|'("($*  
import org.rut.util.algorithm.support.MergeSort; yxz)32B?  
import org.rut.util.algorithm.support.QuickSort; <.d^jgG(j  
import org.rut.util.algorithm.support.SelectionSort; Ng=_#<  
import org.rut.util.algorithm.support.ShellSort; jPum2U_  
o=%pR|  
/** aFfd!a" n  
* @author treeroot ]x12_+  
* @since 2006-2-2 r0xmDJ@y  
* @version 1.0 <r`^iR)%  
*/ 16pk4f8  
public class SortUtil { * |dz.Tr  
public final static int INSERT = 1;  MjjN  
public final static int BUBBLE = 2; #gQaNc?  
public final static int SELECTION = 3; !=/wpsH  
public final static int SHELL = 4; =PQMd  
public final static int QUICK = 5; )fGIe rS  
public final static int IMPROVED_QUICK = 6; cT&!_g#g  
public final static int MERGE = 7; _{k-&I  
public final static int IMPROVED_MERGE = 8; C]- !u Ly  
public final static int HEAP = 9; -G|?Kl  
%k+G-oT5  
public static void sort(int[] data) { /[<1D|f%  
sort(data, IMPROVED_QUICK); ,JU3 w  
} @Q%9b)\\  
private static String[] name={ p#QR^|7"  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Vs"1:gi&  
}; 9$~a&lXO5  
(H[ .\O-`  
private static Sort[] impl=new Sort[]{ }M0GPpv  
new InsertSort(), QT<\E`v  
new BubbleSort(), hKjG/g:#G  
new SelectionSort(), 7A=*3  
new ShellSort(), jl)7Jd  
new QuickSort(), q RbU@o.3  
new ImprovedQuickSort(), \GP0FdpV  
new MergeSort(), z&Kh$ $)[  
new ImprovedMergeSort(), 6o cTQ}=  
new HeapSort() S}}L& _  
}; FpYeuH%  
Hl*V i3bQU  
public static String toString(int algorithm){ s~tZN  
return name[algorithm-1]; %s;=H)8  
} N'@E^ rYc  
:|z.F+-/  
public static void sort(int[] data, int algorithm) { t3VZjO  
impl[algorithm-1].sort(data); ,bRYqU?#0  
} \; FE@  
ZQ)vvD<  
public static interface Sort { :RG=3T[  
public void sort(int[] data); 9cJ1J7y  
} jiGXFM2  
XlaGR2-%  
public static void swap(int[] data, int i, int j) { "">{8  
int temp = data; }7+`[g  
data = data[j]; (/^dyG|X'  
data[j] = temp; <KEVA?0>  
} yLY$1#Sa  
} )TtYm3,  
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