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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。 <$A,|m  
插入排序: H{cOkuy  
-^NW:L$|  
package org.rut.util.algorithm.support; RE!WuLs0"  
+*.*bo  
import org.rut.util.algorithm.SortUtil; )Kx.v'  
/** 8GkWo8rPk  
* @author treeroot k}LIMkEa4a  
* @since 2006-2-2 /K H85/s  
* @version 1.0 b^R:q7ea  
*/ fRNj *bIV  
public class InsertSort implements SortUtil.Sort{ BB}WfA  
@3n!5XM{EE  
/* (non-Javadoc) nOC\ =<Nsg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V lZ+x)E  
*/ B7Ket8<J  
public void sort(int[] data) { 5bb#{?2i  
int temp; oyVT  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jTwSyW  
} bB@=J~l4  
} W=Syo&;F8  
} $NCvF'  
Bo:epus}\  
} -w+.'  
J>X@g;  
冒泡排序: 0LW3VfvToN  
u?>},M/  
package org.rut.util.algorithm.support; s:{[Y7\?  
xWLZlUHEu  
import org.rut.util.algorithm.SortUtil;  W2` 3 p  
B1X&O d  
/** %)i&|AV"  
* @author treeroot m03dL^(   
* @since 2006-2-2 Vg62HZ |  
* @version 1.0 zd_N' :6  
*/ Ry[7PLn]  
public class BubbleSort implements SortUtil.Sort{ #>yOp *  
D[^K0<-Z  
/* (non-Javadoc) i~x]!!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EG4~[5[YgI  
*/ `n,RC2yo  
public void sort(int[] data) { 5kqI  
int temp; G5hRx@vfrL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `K VSYC  
if(data[j] SortUtil.swap(data,j,j-1); 39^+;Mev  
} )EMlGM'2q  
} 5 CnNp?.t^  
} `U0XvWPr[  
} tnpEfi-  
IV~)BW leT  
} C32*RNG?U  
f)vnm*&-  
选择排序: +PPQ"#1pS  
<=CABWO.  
package org.rut.util.algorithm.support; -s HX   
_"*vj-{-y  
import org.rut.util.algorithm.SortUtil; |i B#   
8Z}%,G*n  
/** 3]S_w[Q4  
* @author treeroot / 8O=3  
* @since 2006-2-2 )h ,v(Rxa  
* @version 1.0 OGEe8Z9Jt  
*/ <uU<qO;6  
public class SelectionSort implements SortUtil.Sort { @n qM#  
[<r.M<3  
/* b4:{PD~Mh  
* (non-Javadoc) K1YxF  
* jNbVp{%/S}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j hRr!  
*/ _G)A$6weU  
public void sort(int[] data) { ;Q3[} ]su  
int temp; 62;xK-U  
for (int i = 0; i < data.length; i++) { nK< v  
int lowIndex = i; (e_<~+E  
for (int j = data.length - 1; j > i; j--) { =~s+<9c]  
if (data[j] < data[lowIndex]) { _an 0G?7  
lowIndex = j; q4X( _t  
} BN&)5M?Xt6  
} nh7_ jEX  
SortUtil.swap(data,i,lowIndex); XX-(>B0L  
} (k+*0.T&?  
} 1q=Q/L4P  
_{):w~zi  
} |WUM=g7PC  
OL_#Uu  
Shell排序: h [Sd3Z*  
iWWtL  
package org.rut.util.algorithm.support; 6RIbsy  
; Ows8  
import org.rut.util.algorithm.SortUtil; z-3.%P2g  
=84EX<B  
/** #Fo#f<b p  
* @author treeroot mUl0D0#  
* @since 2006-2-2 f>xi (0  
* @version 1.0 ;HYEJ3  
*/ IAbQgBvUD  
public class ShellSort implements SortUtil.Sort{ >r X$E<B\  
D]>Z5nr |  
/* (non-Javadoc) y k!K 5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f4,|D |  
*/ Q(A$ >A  
public void sort(int[] data) { Dl~(NLM  
for(int i=data.length/2;i>2;i/=2){ `3? HQ2n  
for(int j=0;j insertSort(data,j,i); gdSqG2/&  
} h}nS&.  
} rYV]<[?~7  
insertSort(data,0,1); aZo}Ix:/  
} %Unwh1VG  
|3FGMg%  
/** 4n.JRR&;  
* @param data Kt qOA[6  
* @param j ;t9!< L  
* @param i UM0Ws|qx&  
*/ D 9;pjY  
private void insertSort(int[] data, int start, int inc) { vC1fKo\p  
int temp; L9^ M?.a  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &2%|?f|  
} Mb"y{Fox  
} k8J zey]X  
} @x*xgf  
{m3#1iV9  
} J:'_S `J  
z80(+ `   
快速排序: i@D4bd9lR  
#?\(l%  
package org.rut.util.algorithm.support; 7MZH'nO  
|_g7k2oLY  
import org.rut.util.algorithm.SortUtil; EF$ASNh"  
Q3hSWXq'  
/** ]5@n`;&#.  
* @author treeroot OpazWcMoo  
* @since 2006-2-2 a0k;way  
* @version 1.0 ]iW:YNvXA  
*/ QoUdTIIL  
public class QuickSort implements SortUtil.Sort{ _R]0S  
}M(xN6E  
/* (non-Javadoc) qGhg?u"n:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WqM| nX  
*/ ) x+edYw  
public void sort(int[] data) { n(V{ [  
quickSort(data,0,data.length-1); )RTWt`  
} &ID! lEd  
private void quickSort(int[] data,int i,int j){ 78*8-  
int pivotIndex=(i+j)/2; )w<Z4_!N4s  
file://swap ,?jc0L.'r]  
SortUtil.swap(data,pivotIndex,j); wjH1Ombt  
fUCjC*#1  
int k=partition(data,i-1,j,data[j]); S8kzAT  
SortUtil.swap(data,k,j); $"( 15U  
if((k-i)>1) quickSort(data,i,k-1); 0=U|7%dOL  
if((j-k)>1) quickSort(data,k+1,j); A4rMJ+!5  
%A3m%&(m&%  
} WB_BEh[>j  
/** OXp N8Dh5  
* @param data LibQlNW\  
* @param i IS!OO<  
* @param j (x\VGo  
* @return I0H]s/*C%9  
*/ qAd=i0{N  
private int partition(int[] data, int l, int r,int pivot) { 6&;GC<].(y  
do{ $nW9VMa  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?Bq^#i |m  
SortUtil.swap(data,l,r); 8 3/WWL }  
} LauGT* z!  
while(l SortUtil.swap(data,l,r); 1MO-60  
return l; 2<!IYEyT  
} DOGGQ$0  
|qj"p  
} V'>Plb.A  
ig YYkt  
改进后的快速排序: SWhzcqp  
-l_B;Sb:e  
package org.rut.util.algorithm.support; PW5)") z  
Iw.!*0$  
import org.rut.util.algorithm.SortUtil; |/xx**?  
^>ir&$  
/** U/A iI;Ne  
* @author treeroot \\13n4fAv  
* @since 2006-2-2 DrioBb@  
* @version 1.0 G9Kck|50  
*/ uxDM #  
public class ImprovedQuickSort implements SortUtil.Sort { } LC  
(K8Ob3zN_  
private static int MAX_STACK_SIZE=4096; ![Gn0X?]  
private static int THRESHOLD=10; 4'`P+p"A  
/* (non-Javadoc) i\^4EQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >W >Ei(f  
*/ 5rbb ,*  
public void sort(int[] data) { +XO\#$o>W  
int[] stack=new int[MAX_STACK_SIZE]; -n[(0n3c  
} )L z%Z  
int top=-1; 7$g$p&,VX  
int pivot; ,YvOk|@R  
int pivotIndex,l,r; /i27F2NQm  
Nc4;2~XwRp  
stack[++top]=0; h/|p`MP\1  
stack[++top]=data.length-1; Pf,@U'f|  
d8agM/F*/  
while(top>0){ 6| B9kh}  
int j=stack[top--]; 1,) yEeHjU  
int i=stack[top--]; >w7KOVbN3  
^<-r57pz  
pivotIndex=(i+j)/2; @q>Hl`a  
pivot=data[pivotIndex]; M!i|,S  
l"}_+5  
SortUtil.swap(data,pivotIndex,j); BK=w'1U  
ToPjB vD  
file://partition "OwVCym?  
l=i-1; a,S;JF)v  
r=j; :8oJG8WH  
do{ ~AYleM  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (?t}S.>g  
SortUtil.swap(data,l,r); +e2:?d@  
} 4P1}XYD-2  
while(l SortUtil.swap(data,l,r); KgkRs?'z  
SortUtil.swap(data,l,j); N2'aC} I  
j:'g*IxM_  
if((l-i)>THRESHOLD){ YK6'/2!  
stack[++top]=i; $qYP|W  
stack[++top]=l-1; M$Z2"F;  
} B1!xr-kC  
if((j-l)>THRESHOLD){ *n EkbI/  
stack[++top]=l+1; x,U_x  
stack[++top]=j; P$k*!j_W  
} J+E,UiZU  
}]mx Kz  
} Kd^.>T-  
file://new InsertSort().sort(data); 1F5KDWtE  
insertSort(data); [H <TcT8  
} /QyKXg6)l  
/** G'G8`1Nj  
* @param data /<8y>  
*/ X)~wB7_0G  
private void insertSort(int[] data) { 4RtAwB  
int temp; =iKl<CqI$E  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hF0,{v  
} KsOWTq"uj  
} ]nB|8k=J  
} p+V#86(3  
@ G)yz!H  
} _,T 4DS6  
A)C)5W  
归并排序: 9K`_P] l2z  
;50&s .gZ  
package org.rut.util.algorithm.support; 1\&j)3mC  
%;dj6):@  
import org.rut.util.algorithm.SortUtil; 9/(jY$Ar  
eyyME c!  
/** @0@ZlH wM  
* @author treeroot [#q>Aq$11  
* @since 2006-2-2 + tMf&BZ  
* @version 1.0 V9v20iX  
*/ /v+)#[]>  
public class MergeSort implements SortUtil.Sort{ byM-$l  
v wEbGx  
/* (non-Javadoc) >UaQ7CRo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G7nhUg  
*/ vNv!fkl  
public void sort(int[] data) { !&rd#ZBn  
int[] temp=new int[data.length]; ~pQN#C)CO>  
mergeSort(data,temp,0,data.length-1); MWh Y&I+  
} a^p#M  
"GK9Y  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?F AI@4  
int mid=(l+r)/2; !o /=,ZIx  
if(l==r) return ; Eu`|8# [ W  
mergeSort(data,temp,l,mid); 22CET9iCe  
mergeSort(data,temp,mid+1,r); kJ_8|  
for(int i=l;i<=r;i++){ 2aM7zP[Z  
temp=data; | ]*3En:  
} R2Fjv@Egk  
int i1=l; h <LFTYE@  
int i2=mid+1; E7MSoBX9M  
for(int cur=l;cur<=r;cur++){ ",$_\l  
if(i1==mid+1) f_jhQ..g<g  
data[cur]=temp[i2++]; AzOs/q8O  
else if(i2>r) A#=TR_@:  
data[cur]=temp[i1++]; ! ;t\lgMl  
else if(temp[i1] data[cur]=temp[i1++]; 2]5{Xmmo9  
else wu)+n\mt'  
data[cur]=temp[i2++]; EsMX #1>/m  
} lhGJ/By- -  
} sCFxn  
i3,IEN  
} Mqr_w!8d  
3T2]V?   
改进后的归并排序: e|\xF V=4  
gA!@oiq@  
package org.rut.util.algorithm.support; Wb-C0^dTn  
pd|KIs%jl  
import org.rut.util.algorithm.SortUtil; y QW7ng7D0  
\l~^dn}  
/** RRIh;HhX  
* @author treeroot |vI`u[P  
* @since 2006-2-2 SeD}H=,@  
* @version 1.0 -&5YRfr!  
*/ aTuu",f  
public class ImprovedMergeSort implements SortUtil.Sort { -fq  
K($l>PB,y@  
private static final int THRESHOLD = 10; cq4~(PXT g  
K oJ=0jM#  
/* 5qb93E"C  
* (non-Javadoc) {]T?)!V m  
* @Vre)OrN#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0<uek  
*/ Ek_5% n  
public void sort(int[] data) { y7,I10:D  
int[] temp=new int[data.length]; }5;4'l8  
mergeSort(data,temp,0,data.length-1); >rCD5#DG  
} {o}U"b<+Ra  
p0Jr{hM  
private void mergeSort(int[] data, int[] temp, int l, int r) { .<"XE7  
int i, j, k; bv[#|^/  
int mid = (l + r) / 2; 8s1nE_3  
if (l == r) vYed_'_  
return; !D#"+&&G8  
if ((mid - l) >= THRESHOLD) hmu>s'  
mergeSort(data, temp, l, mid); 7Y5r3a}%  
else &lQ%;)'  
insertSort(data, l, mid - l + 1); 'ToE Y3  
if ((r - mid) > THRESHOLD) y[8;mCh  
mergeSort(data, temp, mid + 1, r); D'g,<-ahl  
else NKu[6J?)  
insertSort(data, mid + 1, r - mid); ?=? _32O  
$ DL}jH^S  
for (i = l; i <= mid; i++) { q[&Kr+)j  
temp = data; _K^Q]V[nZ  
} 0bT j/0G?  
for (j = 1; j <= r - mid; j++) { TN(Vzs%  
temp[r - j + 1] = data[j + mid]; $UR:j8C{p$  
} ^_WR) F'K  
int a = temp[l];  LR97FG  
int b = temp[r]; e4S@ J/D  
for (i = l, j = r, k = l; k <= r; k++) { @Rr=uf G  
if (a < b) { 0:$ }~T9T  
data[k] = temp[i++]; uJw?5kEbv<  
a = temp; lPy|>&Yc  
} else { uX_H;,n  
data[k] = temp[j--]; o(*\MT t?  
b = temp[j]; `6Bx8CZ'I  
} x4MmBVqp  
} 5h5izA'0'  
} v e&d"8+]  
F9fLJol  
/** uvId],dQ5  
* @param data A)f-r  
* @param l YuK+ N  
* @param i [G<ga80  
*/ yw^Pok5.  
private void insertSort(int[] data, int start, int len) { n1sYD6u<&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); pbH!u+DF  
} jI ol`WX  
} Cj-s  
} 7Ak<e tHD  
} 3s6obw$ki  
TSB2]uH  
堆排序: Aa ~W,  
(95|DCL  
package org.rut.util.algorithm.support; # T=iS(i  
r48|C{je-  
import org.rut.util.algorithm.SortUtil; f3K-X1`]'U  
7(Fas(j3  
/** 586P~C[ic  
* @author treeroot >8f~2dH2%  
* @since 2006-2-2 Ku(YTXtK  
* @version 1.0 h^Wb<O`S  
*/ zI`I Q  
public class HeapSort implements SortUtil.Sort{ [:8\F#KW  
vV,TT%J8D  
/* (non-Javadoc) y]db]pP5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F Z"n6hWA  
*/ ZQ`8RF *v  
public void sort(int[] data) { :u>RyKu|&R  
MaxHeap h=new MaxHeap(); =:H-9  
h.init(data); $vs],C"pX  
for(int i=0;i h.remove(); F s/CW\  
System.arraycopy(h.queue,1,data,0,data.length); CTIS}_CWd=  
} I,-n[k\J  
[l}H:%O,  
private static class MaxHeap{ Hjm> I'9  
c]6b|mHT  
void init(int[] data){ 6S`_L  
this.queue=new int[data.length+1]; Q((&Q?Vi  
for(int i=0;i queue[++size]=data; %*D=ni#(sT  
fixUp(size); Qit&cnO  
} `16'qc  
} 1j?P$%p  
Y~"tL(WfJl  
private int size=0; gIB3DuUo  
P5Xp #pa  
private int[] queue; $qNF /rF  
IiPX`V>RC  
public int get() { [\8rh^LFi  
return queue[1]; VGS%U8;  
} @6;OF5VsQ  
`<7\Zl  
public void remove() { $$9H1)Ny  
SortUtil.swap(queue,1,size--); [JOa^U=  
fixDown(1); yGa0/o18!?  
} #(^<qr   
file://fixdown |AYii-g  
private void fixDown(int k) { A8% e _XA  
int j; <.h7xZ  
while ((j = k << 1) <= size) { WVP?Ie8  
if (j < size %26amp;%26amp; queue[j] j++; "N+4TfXy  
if (queue[k]>queue[j]) file://不用交换 s)-An( Uw  
break; 7-744wV}Z  
SortUtil.swap(queue,j,k); (\6E.Z#  
k = j; K9N31'  
} _^iY;&  
} *!QmYH5r0  
private void fixUp(int k) { Z(MZbzY7Hq  
while (k > 1) { CFpBosoFt^  
int j = k >> 1; j.=:S;  
if (queue[j]>queue[k]) 9Yt|Wj  
break; '2lV(>"  
SortUtil.swap(queue,j,k); H:.~! r  
k = j; iw)gNQ%z4  
} 2S8;=x}/  
} <cTX;&0=  
[jgVN w""D  
} hK?GIbRZ  
"r^RfZ;  
} a%%7Ew ?  
ZF7n]LgSc&  
SortUtil: g QBS#NY  
T+Yv5l  
package org.rut.util.algorithm; dz^HN`AlzC  
}qWnn>h9xv  
import org.rut.util.algorithm.support.BubbleSort; KI9Pw]]{-  
import org.rut.util.algorithm.support.HeapSort; 9PB%v.t5 y  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9vRLM*9|  
import org.rut.util.algorithm.support.ImprovedQuickSort; t0 e6iof^o  
import org.rut.util.algorithm.support.InsertSort;  VY6G{f  
import org.rut.util.algorithm.support.MergeSort; &M|rRd~*  
import org.rut.util.algorithm.support.QuickSort; /stvNIEa  
import org.rut.util.algorithm.support.SelectionSort; 8a6.77c  
import org.rut.util.algorithm.support.ShellSort; }?2X q  
\(Ma>E4PNU  
/** @X/ 1`Mp  
* @author treeroot @qNY"c%HV  
* @since 2006-2-2 3@~a)E}T  
* @version 1.0 ilL%  
*/ bF _]j/  
public class SortUtil { ^Gk)aX  
public final static int INSERT = 1; F_079~bJ  
public final static int BUBBLE = 2; =z. hJu  
public final static int SELECTION = 3; aE0R{yupZ  
public final static int SHELL = 4; m* 3ipI{h  
public final static int QUICK = 5; ? dJd7+A  
public final static int IMPROVED_QUICK = 6; %bw+>:Tr  
public final static int MERGE = 7; [{Wo:c9Qq1  
public final static int IMPROVED_MERGE = 8; 6FDj:~  
public final static int HEAP = 9; "](Q2  
wR_mJMk_  
public static void sort(int[] data) { <zXG}JuL@T  
sort(data, IMPROVED_QUICK); / &Z8g4vc  
} "L.k m  
private static String[] name={ P%R!\i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  ?s,oH  
}; @|A!?}  
Sh#N5kgD  
private static Sort[] impl=new Sort[]{ 1uw1(iL+  
new InsertSort(), .=:f]fs  
new BubbleSort(), W3~u J(  
new SelectionSort(), cW^LmA  
new ShellSort(), ^_#wo"  
new QuickSort(), YeCnk:_ kg  
new ImprovedQuickSort(), / =9Y(v  
new MergeSort(), X3sAy(q  
new ImprovedMergeSort(), (Z<@dkO?)  
new HeapSort() |&K;*g|a  
}; y A5h^I  
lITd{E,+r  
public static String toString(int algorithm){ 82FEl~,^E  
return name[algorithm-1]; 3w^W6hN)  
} QPm[4Fd{G  
(rFkXK4^J  
public static void sort(int[] data, int algorithm) { faOiNR7;h  
impl[algorithm-1].sort(data); dEYw_qJ2  
} O.jm{x!m  
YT-ua{ .^  
public static interface Sort { ;MeY@* "{  
public void sort(int[] data); g#(+:^3'  
} '/`O*KD]  
@vq)Y2)r\  
public static void swap(int[] data, int i, int j) { T;DKDg a  
int temp = data; XW aa`q  
data = data[j]; B-g-T>8  
data[j] = temp; Xc[ym  
} #pZeGI|'J  
} OcUj_Zd  
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10+5=?,请输入中文答案:十五