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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。 @MAk/mb&  
插入排序: R 5bt~U  
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package org.rut.util.algorithm.support; ^*%p]r  
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import org.rut.util.algorithm.SortUtil; 9"_qa q  
/** (. 1<.PZp)  
* @author treeroot 2,q^O3F  
* @since 2006-2-2 >UWL T;N/W  
* @version 1.0 {foF[M  
*/ y%}Po)X]f  
public class InsertSort implements SortUtil.Sort{ ?VS {,"X  
%49@  
/* (non-Javadoc) qJ#?=ITE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4U C/pGZY  
*/ >:Xzv  
public void sort(int[] data) { \QHe0?6  
int temp; 2frJSV?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I)_072^O  
} /PQg>Pa85  
} !*?&V3!  
} V{ra,a*  
m*CIbkDsZ  
} ] A9Vh  
~9h6"0K!  
冒泡排序: 1fViW^l_  
C[n,j#Mvje  
package org.rut.util.algorithm.support; OA4NXl'  
X[h=UlF  
import org.rut.util.algorithm.SortUtil; K]N^6ome  
yY[[)  
/** X OJ/$y  
* @author treeroot Qn[4&nUD  
* @since 2006-2-2 IOvYvFUUJ  
* @version 1.0 6jPaS!E  
*/ C.%iQx`   
public class BubbleSort implements SortUtil.Sort{ kOFEH!9&  
TLPy/,  
/* (non-Javadoc) 3`SLMPI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f!xIMIl)+  
*/ _o' jy^  
public void sort(int[] data) { =f.f%g6  
int temp; D@>P%k$$s>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T>kJB.V:oQ  
if(data[j] SortUtil.swap(data,j,j-1); T 7Lk4cU  
} #9#N+  
} *ZKfyn$+~  
} $hg W>e  
} yr[iAi"  
h9>~?1$lz  
} .6(Bf$E  
$-5iwZ  
选择排序: ib/&8)Y+J  
Vnv<]D zC  
package org.rut.util.algorithm.support; xg. d)n  
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import org.rut.util.algorithm.SortUtil; 0 (@8   
goIn7ei92  
/** +%UXI$v  
* @author treeroot QIBv}hgcy  
* @since 2006-2-2 7EQ |p  
* @version 1.0 ToDNBt.u{+  
*/ )nQpO"+M  
public class SelectionSort implements SortUtil.Sort { :*A6Ba  
9p>3k&S  
/* py P5^Qv  
* (non-Javadoc) S>*i^If  
* c}g^wLa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r\ ` R$  
*/ -;Cl0O%  
public void sort(int[] data) { )q&uvfQ1(  
int temp; }4A+J"M4y  
for (int i = 0; i < data.length; i++) { QOy+T6en  
int lowIndex = i; JS!rZi  
for (int j = data.length - 1; j > i; j--) { WvUe44&^$  
if (data[j] < data[lowIndex]) { ]/bf#&@g`k  
lowIndex = j; ?G0=\U< o,  
} v(h   
}  p&:R SO  
SortUtil.swap(data,i,lowIndex); lwQI 9U[O2  
} l_>^LFOA  
} &0Wv+2l @  
Mm^o3vl  
} ^|>vK,q$I  
B07(15y]  
Shell排序: "eZNci  
!OPa `kSh  
package org.rut.util.algorithm.support; PZeVjL?E  
q`"gT;3S  
import org.rut.util.algorithm.SortUtil; x_2 [+Ol  
yZUB8erb.  
/** $-jj%x\}  
* @author treeroot My,ki:V?g6  
* @since 2006-2-2 ^qS[2Dy  
* @version 1.0 C;G~_if4PR  
*/ fC&Egy  
public class ShellSort implements SortUtil.Sort{ na(@`(j[  
T% Kj >-  
/* (non-Javadoc) X<#Q~"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BqCBH!^x  
*/ aOyAP-m,  
public void sort(int[] data) { .v/s9'lB  
for(int i=data.length/2;i>2;i/=2){ F4YCU$V  
for(int j=0;j insertSort(data,j,i); ]wER&/v"  
} Nt$/JBB[$  
} B9>3xxp(by  
insertSort(data,0,1); =HQH;c"  
} ?VCb@&*  
e~i ?E  
/** 2oGl"3/p  
* @param data %kKe"$)0  
* @param j 1Xu\Tm\Ux  
* @param i B&O931E7  
*/ =S|SQz5%w  
private void insertSort(int[] data, int start, int inc) { ,l.O @  
int temp; Y \& 4`v'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); & WYIfx{  
} h<$Vry}  
} kzbgy)PK3  
} Nye Ga  
&t5pJ`$(Cy  
} 5owUQg,W  
]9l=geZd%;  
快速排序: I}kx;!*b  
J 2v=b?NE  
package org.rut.util.algorithm.support; H9x xId?3u  
`Ft.Rwj2:m  
import org.rut.util.algorithm.SortUtil; rk-}@vp  
4IG'T m  
/** >(<OhS(  
* @author treeroot %$~?DDNM  
* @since 2006-2-2 6HCP1`gg   
* @version 1.0 T]Vh]|_s  
*/ l$}h1&V7  
public class QuickSort implements SortUtil.Sort{ CTD{!I(  
_o8il3  
/* (non-Javadoc) `-hFk88  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BikmAa  
*/ `2o/W]SSk  
public void sort(int[] data) { 5%rD7/7N  
quickSort(data,0,data.length-1); Egi<m   
} l`:M/z6"  
private void quickSort(int[] data,int i,int j){ SaH0YxnY+  
int pivotIndex=(i+j)/2; (%rO'X  
file://swap )V*Z|,#no  
SortUtil.swap(data,pivotIndex,j); <Qe30_<K  
Ko]A}v\]  
int k=partition(data,i-1,j,data[j]); u}W R1u [  
SortUtil.swap(data,k,j); il(dVW  
if((k-i)>1) quickSort(data,i,k-1); qt=gz6!  
if((j-k)>1) quickSort(data,k+1,j); Du k v[/60  
P sij*%I4  
} th}Q`vg0  
/** 4nmc(CHQ:  
* @param data EJ;:O1,6H  
* @param i x{`>Il  
* @param j 2>80Qp!xO  
* @return ng(STvSh:  
*/ 4eMNKIsvY$  
private int partition(int[] data, int l, int r,int pivot) { 3K c  
do{ 9XImgeAs  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v@_b"w_TY  
SortUtil.swap(data,l,r); 6}ct{Q  
} rH"&  
while(l SortUtil.swap(data,l,r); \R#]}g0!  
return l; 1K.i>]}>  
} *~~ >?  
AC;ja$A#  
} 8XZS BR(Z  
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改进后的快速排序: H,bYzWsrPo  
Pb 4%" 9`  
package org.rut.util.algorithm.support; #q 'J`BC  
MA0 }BJoW  
import org.rut.util.algorithm.SortUtil; Hg(%g T  
T~@$WM(  
/** }wJ-*By{+  
* @author treeroot 'yd<<BM`  
* @since 2006-2-2 4+qoq$F</  
* @version 1.0 >_ bH ,/D'  
*/ $a|C/s+}7>  
public class ImprovedQuickSort implements SortUtil.Sort { xp<\7m_N  
qOAK`{b  
private static int MAX_STACK_SIZE=4096; Qxr&zT7f  
private static int THRESHOLD=10; T|RW-i3  
/* (non-Javadoc) wN'Q\l+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) < 3i2(k  
*/ is @8x!c  
public void sort(int[] data) { OP>rEUtj  
int[] stack=new int[MAX_STACK_SIZE]; 4d~Sn81xW  
</~!5x62Oy  
int top=-1; &qKJN#NM@  
int pivot; V`Ve__5;  
int pivotIndex,l,r; Rg@W0Bc)  
',`GdfAsH  
stack[++top]=0; VX#4Gh,~N  
stack[++top]=data.length-1; OE_;i}58  
 d(!W  
while(top>0){ !jZXh1g%  
int j=stack[top--]; ,?s3%<\2   
int i=stack[top--]; E{+V_.tlu  
Qv=F'  
pivotIndex=(i+j)/2; (ns> z7  
pivot=data[pivotIndex]; do0;"O0 (  
5H8]N#Y&  
SortUtil.swap(data,pivotIndex,j); yv1Z*wTpO  
67<Ym0+ =  
file://partition Qxb5Y)/jn  
l=i-1; X;`XkOjk  
r=j; 7L68voC@U  
do{ F#d`nZ=M  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R)4L]ZF  
SortUtil.swap(data,l,r); 3zi(|B[,?  
} p1^k4G  
while(l SortUtil.swap(data,l,r); .[YM0dt  
SortUtil.swap(data,l,j); ~m4{GzB  
}?^V9K-  
if((l-i)>THRESHOLD){ m^hi}Am1  
stack[++top]=i; 3!]S8Y*LQP  
stack[++top]=l-1; Z1u:OI@(  
} 9&(d2  
if((j-l)>THRESHOLD){ kC~\D?8E=  
stack[++top]=l+1; #bk[Zj&  
stack[++top]=j; gzdR|IBa  
} `rt?n|*QF  
9em?2'ysa  
} GZt+(q  
file://new InsertSort().sort(data); Qe8F(k~k  
insertSort(data); g~,"C8-H  
} ]r 6S|;:  
/** e6O+hC]:  
* @param data 3eOwy~  
*/ -44{b<:D  
private void insertSort(int[] data) { /"$A?}V  
int temp; c -1Hxd YD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j2\B(PA  
} iIZDtZFF  
} % Q| >t~  
} =}SH*xi6  
i6)7)^nG  
} {[Bo"a>%  
uU+R,P0  
归并排序: 55aJ =T  
k(<:  
package org.rut.util.algorithm.support; /HlLfW  
M}jF-z  
import org.rut.util.algorithm.SortUtil; k`#OXLR  
Zq,[se'nh"  
/** 1=R6||8ws  
* @author treeroot 16;r+.FB'  
* @since 2006-2-2 ;"d>lyL  
* @version 1.0 U^AywE]  
*/ BYh F?  
public class MergeSort implements SortUtil.Sort{ O/Q7{5n  
wNNInS6  
/* (non-Javadoc) 0[/GEY@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R&lJ& SgC  
*/ UG@9X/l}  
public void sort(int[] data) { olHT* mr  
int[] temp=new int[data.length]; 2hD(zUSy  
mergeSort(data,temp,0,data.length-1); lfle7;  
} nTy8:k']  
:>y?B!=  
private void mergeSort(int[] data,int[] temp,int l,int r){ J(0E'o{ug  
int mid=(l+r)/2; !z EW)  
if(l==r) return ; :TPT]q d@  
mergeSort(data,temp,l,mid); ]2Vu+AP  
mergeSort(data,temp,mid+1,r); CtEpS<*c  
for(int i=l;i<=r;i++){ @ PboT1  
temp=data; c8@zpkMj/  
} m'j]T/WF  
int i1=l; t>~a/K"  
int i2=mid+1; ?2RDd|#  
for(int cur=l;cur<=r;cur++){ d*}dM "  
if(i1==mid+1) ?.A~O-w  
data[cur]=temp[i2++]; vZ&{   
else if(i2>r) @R c/ ^B:  
data[cur]=temp[i1++]; RWX?B  
else if(temp[i1] data[cur]=temp[i1++]; H}ie D"T_  
else ApT8;F B  
data[cur]=temp[i2++]; }|KNw*h $  
} ,$H[DX  
} /i[1$/*  
KxA ^?,t[  
} t)p . $  
3QD+&9{D  
改进后的归并排序: 6bE~m<B\`  
kWSei3  
package org.rut.util.algorithm.support; ep,"@,,  
y E; n. L  
import org.rut.util.algorithm.SortUtil; EF8~rKO3  
C6 PlO  
/** 0 %W0vTvL  
* @author treeroot s7789pR  
* @since 2006-2-2 )j_Y9`R  
* @version 1.0 KUE}^/%z  
*/ j#f7-nHyz8  
public class ImprovedMergeSort implements SortUtil.Sort { f[XsnN2  
.Fl5b}C(  
private static final int THRESHOLD = 10; ((AsZ$[S  
"0V8i%a  
/* ;_nV*G.y#^  
* (non-Javadoc) > &VY  
* ([#4H3uO-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,q".d =6  
*/ l&2pUv=  
public void sort(int[] data) { s?9$o Qq1  
int[] temp=new int[data.length]; ~%D=\iE  
mergeSort(data,temp,0,data.length-1); 'CfM'f3uu  
} aCZ7G % Y  
Z /*X)mBuB  
private void mergeSort(int[] data, int[] temp, int l, int r) { LJh^-FQ  
int i, j, k; Y+ Qm.  
int mid = (l + r) / 2; 4k]DktY}.  
if (l == r) V."qxKsz  
return; qt.Y6s:r_  
if ((mid - l) >= THRESHOLD) gP^p7aYwn  
mergeSort(data, temp, l, mid); .S6u{B  
else /ygC_,mx  
insertSort(data, l, mid - l + 1); C4h4W3w  
if ((r - mid) > THRESHOLD)  aj|gt  
mergeSort(data, temp, mid + 1, r); |'SgGg=E  
else xE"QX N  
insertSort(data, mid + 1, r - mid); BXx l-x  
 TNj WZ  
for (i = l; i <= mid; i++) { 713)D4y}  
temp = data; |EpL~ G_  
} \)/dFo\l  
for (j = 1; j <= r - mid; j++) { wc~k4B9"  
temp[r - j + 1] = data[j + mid]; 7.!`c-8 u  
} An2Wj  
int a = temp[l]; VM"z6@  
int b = temp[r]; N NTUl$  
for (i = l, j = r, k = l; k <= r; k++) { T/YvCbo  
if (a < b) { J12hjzk6@  
data[k] = temp[i++]; g-O}e4  
a = temp; %{j)w{ L J  
} else { D/<;9hw  
data[k] = temp[j--]; S>N/K  
b = temp[j]; Rct=v DU  
} l6y*SW5+  
} KU5|~1t 4  
} p(`?y:.3  
?T\_"G  
/** 5IfyD ]<  
* @param data U%zZw)  
* @param l c_+y~X)i  
* @param i RLL2'8"A  
*/ jxdxIkAHZc  
private void insertSort(int[] data, int start, int len) { 7O^'?L<C'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )gb gsQZ  
} N8K @ch3=P  
} /4_^'RB  
} \UR/tlw+/  
}  aa10vV  
<RPy   
堆排序: 6d%'>^`(o-  
[T>a}}@  
package org.rut.util.algorithm.support; <-%OXEG  
7$HN5T\!  
import org.rut.util.algorithm.SortUtil; P3u,)P&  
,f2tG+P  
/** [7|j:!  
* @author treeroot { kF"<W  
* @since 2006-2-2 szG0?e  
* @version 1.0 *LZ^0c:r  
*/ vi-mn)L6#  
public class HeapSort implements SortUtil.Sort{ Qin;{8I0  
[bIR$c[G  
/* (non-Javadoc) S`v+rQjW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FaVeP%v  
*/ 5Z@~d'D  
public void sort(int[] data) { 'D1Sm&M2%e  
MaxHeap h=new MaxHeap(); :!nBTw  
h.init(data); QZ:xG:qyk;  
for(int i=0;i h.remove(); w\f>.N  
System.arraycopy(h.queue,1,data,0,data.length); kV$$GLD\  
} Ohe* m[  
WG\gf\=I  
private static class MaxHeap{ F>!gwmn~  
X&+*?Q^  
void init(int[] data){ $,v[<T`  
this.queue=new int[data.length+1]; Bx&F*a;5  
for(int i=0;i queue[++size]=data; Ag#o&Y  
fixUp(size); 8ta`sNy9  
} R]8^ @i1  
} ( 8}'JvSu  
u>U4w68  
private int size=0; |Vq&IfP  
lAcXi$pF  
private int[] queue; f}_d`?K  
v!b 8_0~u6  
public int get() { yxpDQ O~x  
return queue[1]; 7vf?#^ RlV  
} b}OOG  
Pa}B0XBWP  
public void remove() { LtDQgel"  
SortUtil.swap(queue,1,size--); pHpHvSI  
fixDown(1); _ o-lNt+  
} :a#p zEK  
file://fixdown u|'}a3  
private void fixDown(int k) { *w[\(d'T  
int j; J|D$  
while ((j = k << 1) <= size) { ZKT~\l  
if (j < size %26amp;%26amp; queue[j] j++; $4j$c|S!  
if (queue[k]>queue[j]) file://不用交换 Q'mLwD3>  
break; y_Tc$g~  
SortUtil.swap(queue,j,k); S5$sB{\R  
k = j; `AO<r  
} ,& ^vc_}  
} (3;dtp>Xx  
private void fixUp(int k) { xWa96U[  
while (k > 1) { +uY)MExs2  
int j = k >> 1; <\If:  
if (queue[j]>queue[k]) 1p[Z`m*9  
break; @/ m|T]'8  
SortUtil.swap(queue,j,k); s, 8a1o  
k = j; s.)nS $  
} u VZouw#  
} 8sV_@<l<X  
ZPISclSA+  
} q~K KN /N  
<%2A, Vz"  
} d5x>kO'[l  
3N ]  
SortUtil: %!>~2=Q2*  
_Wjd`*  
package org.rut.util.algorithm; J}035  
RNJUA^{  
import org.rut.util.algorithm.support.BubbleSort; f#W5Nu'*!  
import org.rut.util.algorithm.support.HeapSort; DjX*2O  
import org.rut.util.algorithm.support.ImprovedMergeSort; x\ pC&  
import org.rut.util.algorithm.support.ImprovedQuickSort; v .ftfL!  
import org.rut.util.algorithm.support.InsertSort; ,;2x.We  
import org.rut.util.algorithm.support.MergeSort; _(q|W3  
import org.rut.util.algorithm.support.QuickSort; gD\  =  
import org.rut.util.algorithm.support.SelectionSort; G\?q{  
import org.rut.util.algorithm.support.ShellSort; ZN:~etd  
/ xfg4  
/** v=~=Q*\l  
* @author treeroot `Xbk2KD p  
* @since 2006-2-2 $:YJ<HvG<  
* @version 1.0 y'9 bs  
*/ & m'ttUG?  
public class SortUtil { :V%XEN)  
public final static int INSERT = 1; ?Q< o-o;B  
public final static int BUBBLE = 2; :PrQ]ss@C5  
public final static int SELECTION = 3; |Q'l&Gt6  
public final static int SHELL = 4; nj7wc9z4  
public final static int QUICK = 5; za ix_mR  
public final static int IMPROVED_QUICK = 6; QX*HvT  
public final static int MERGE = 7; mv1_vF:  
public final static int IMPROVED_MERGE = 8; ZjE!? '(ef  
public final static int HEAP = 9; 0#}@- e  
@+v;B:  
public static void sort(int[] data) { 8%UI<I,  
sort(data, IMPROVED_QUICK); SOyE$GoOsx  
} b ;Vy=f  
private static String[] name={ +M+ht  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "e4hPY#  
}; iB Ld*B|#K  
):. +u=  
private static Sort[] impl=new Sort[]{ X5'QYZ6kv  
new InsertSort(), U20G{%%  
new BubbleSort(), $lj1924?^  
new SelectionSort(), u3 mTsq!  
new ShellSort(), o9!DK  
new QuickSort(), UQwLAXs  
new ImprovedQuickSort(), hi>sDU< x  
new MergeSort(), <}c`jN!z.  
new ImprovedMergeSort(), <y(uu(c  
new HeapSort() Fejs9'cB  
}; bF88F_  
'"H'#%RU  
public static String toString(int algorithm){ QD0upYG  
return name[algorithm-1]; Y&O<A8=8  
} I9ga8mG4-'  
XD5z+/F<"0  
public static void sort(int[] data, int algorithm) { lE+v@Kb:  
impl[algorithm-1].sort(data); V  `KXfY  
} =OIx G}*  
7XE/bhe%S  
public static interface Sort { "}i\" x;s  
public void sort(int[] data); Go}C{(4T  
} ~M 6^%  
*/Oq$3QGsV  
public static void swap(int[] data, int i, int j) { M"OX NPkc  
int temp = data; V4GcW|P4y  
data = data[j]; $=f,z>j  
data[j] = temp; 5$Yt@8;  
} Aw )='&;^z  
} R$@|t?  
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