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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 ;@G  
插入排序: ]rk8Jsg  
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package org.rut.util.algorithm.support; LcL|'S)  
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import org.rut.util.algorithm.SortUtil; A6-K~z^  
/**  M18<d1*  
* @author treeroot L>:YGM"sL  
* @since 2006-2-2 D3,9X#B=  
* @version 1.0 fH{ _X  
*/ 5ZpU><y  
public class InsertSort implements SortUtil.Sort{ abAX)R'  
H$G`e'`OZ  
/* (non-Javadoc) N`o[iHUj \  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V+04X"  
*/ vSyR% j  
public void sort(int[] data) { YS$42J_T  
int temp; &?[uY5Mk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <WPLjgtn3  
} <<#j?%  
} Lmp_8q-Ej  
} YC,s]~[[   
(tY0/s  
} uB&um*DP  
RQg7vv]%  
冒泡排序: 5SOl:{A +  
OH+kN /Fd  
package org.rut.util.algorithm.support; Lt 8J^}kwl  
YC,)t71l{  
import org.rut.util.algorithm.SortUtil; Wycood*  
Nj~3FL  
/**  AW[_k%  
* @author treeroot J%9)&a W  
* @since 2006-2-2 yxz)32B?  
* @version 1.0 Wra$  
*/ Xu[(hT6  
public class BubbleSort implements SortUtil.Sort{ qhE1 7Hf  
^}VAH#c  
/* (non-Javadoc) ph5rS<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CN(}0/  
*/ [9c|!w^F  
public void sort(int[] data) { c}$C=s5 h}  
int temp; l:'\3-2a  
for(int i=0;i for(int j=data.length-1;j>i;j--){ a%FM)/oI|T  
if(data[j] SortUtil.swap(data,j,j-1); Wjf,AjL\  
} J/T$.*X  
} |:[ [w&R  
} IXA3G7$)  
} V$OZC;4  
; fOkR+  
} N A`qC.K   
3$TU2-x;g  
选择排序: 0 UbY0sYo  
p]lZ4#3  
package org.rut.util.algorithm.support; !=/wpsH  
;kE|Vx  
import org.rut.util.algorithm.SortUtil; Of@ LEEh6  
\x(ILk|'c  
/** [v%j?  
* @author treeroot ()\=(n!J  
* @since 2006-2-2 v4$"{W;'  
* @version 1.0 vGIe"$hNh  
*/ C]- !u Ly  
public class SelectionSort implements SortUtil.Sort { qcWY8sYf  
.5s#JL  
/* gS VWv9+  
* (non-Javadoc) _Qh :*j!  
* *i`t4N A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }HLs.k4-;  
*/ eI@nskq#  
public void sort(int[] data) { @Q%9b)\\  
int temp; AP:(/@K|  
for (int i = 0; i < data.length; i++) { a7~%( L@r  
int lowIndex = i; Dwx^hNh  
for (int j = data.length - 1; j > i; j--) { !XtZI3Xu  
if (data[j] < data[lowIndex]) { &[Zg;r    
lowIndex = j; ;"R1>tw3)  
} K6BP~@H_D  
} }M0GPpv  
SortUtil.swap(data,i,lowIndex); g]mR;T3  
} rYn)E=FG/  
} 8mh@C6U  
C)z?-f  
} J^y}3ON  
-u nK;  
Shell排序: U)sw IisE  
nD5+&M0  
package org.rut.util.algorithm.support; 8aMmz!S  
cxig<W  
import org.rut.util.algorithm.SortUtil; EjF2mkA*  
.0a,%o 8n  
/** 6o cTQ}=  
* @author treeroot .Xm?tC<   
* @since 2006-2-2 K'@lXA:  
* @version 1.0 hN"cXz"/  
*/ *K'_"2J  
public class ShellSort implements SortUtil.Sort{ Cx[Cst `  
H'_v  
/* (non-Javadoc) RF|r@/S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %s;=H)8  
*/ wV{jJyRl  
public void sort(int[] data) { ;i>(r;ZM  
for(int i=data.length/2;i>2;i/=2){ :G8:b.  
for(int j=0;j insertSort(data,j,i); ]IM/R@  
} E=&":I6O  
} 04E S>'@  
insertSort(data,0,1); 7W]0bJK+E  
} tZz *O%  
Sdr,q9+__  
/** e&\+o}S  
* @param data v"v-c!k  
* @param j v~AD7k2{8  
* @param i kBlk^=h<:w  
*/ :< *xG&  
private void insertSort(int[] data, int start, int inc) { 8iwH^+h~  
int temp; n5z";:p  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); b.#0{*/G  
} "">{8  
} >V$ S\"  
} o ?`LZd:{  
j FH wu*  
} x T{s%wE  
Id<O/C  
快速排序: k"pN  
*a2-Vte  
package org.rut.util.algorithm.support; k+% c8w 9  
FE4P EBXvu  
import org.rut.util.algorithm.SortUtil; g}gOAN3.  
? \p,s-CR:  
/** 6BY(Y(z  
* @author treeroot 9.^2CM6l  
* @since 2006-2-2 QTmMj@R&(  
* @version 1.0 /$=<RUE  
*/ qo!6)Z  
public class QuickSort implements SortUtil.Sort{ RemjiCE0'  
"*HVL  
/* (non-Javadoc) -A(]U"@n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ('oA{,#L  
*/ 4DV@-  
public void sort(int[] data) { j9g0k<eg  
quickSort(data,0,data.length-1); K4vOy_wT  
}  8\Uy  
private void quickSort(int[] data,int i,int j){ gaC [%M  
int pivotIndex=(i+j)/2; .qfU^AHA  
file://swap Zk<Y+!  
SortUtil.swap(data,pivotIndex,j); 8k9q@FSln  
0 ~^l*  
int k=partition(data,i-1,j,data[j]);  <6STw  
SortUtil.swap(data,k,j); 4sM9~zC5  
if((k-i)>1) quickSort(data,i,k-1); %uQOAe55  
if((j-k)>1) quickSort(data,k+1,j); (4Ha'uqz  
.:9XpKbt  
} *Q!I^]CR  
/** 3:?QE  
* @param data z`2Ais@ao  
* @param i SG{&2G  
* @param j )tp;2rJ/  
* @return )Pj4_$uM  
*/ iNG =x   
private int partition(int[] data, int l, int r,int pivot) { V:h3F7  
do{ g..&x]aS(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); qE@H~&  
SortUtil.swap(data,l,r); #``Alh8  
} g=Bge)  
while(l SortUtil.swap(data,l,r); 1{$=N 2U  
return l; )F3>  
} 5XF&yYWq  
wfq}NK;  
} /=gU  
,c6c=di  
改进后的快速排序: 8!|LJI  
/" 6Gh'  
package org.rut.util.algorithm.support; ;uyQR8  
+Cs.v.GA5  
import org.rut.util.algorithm.SortUtil; >goG\y  
9ohO-t$XkY  
/** ot; ]?M  
* @author treeroot SS7C|*-Zd  
* @since 2006-2-2 $m[* )0/  
* @version 1.0 UYkuz  
*/ U`kO<ztk  
public class ImprovedQuickSort implements SortUtil.Sort { /ULO#CN?;  
$LHF=tYS  
private static int MAX_STACK_SIZE=4096; "VI2--%v3  
private static int THRESHOLD=10; r [4dGt  
/* (non-Javadoc) ,nGZ( EBD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K'zBDrkW-x  
*/ o)sX?IiC  
public void sort(int[] data) { 3bZ:*6W.6  
int[] stack=new int[MAX_STACK_SIZE]; .&;:X )  
GN=-dLN  
int top=-1; ~4=XYYcka  
int pivot; ZL+46fj  
int pivotIndex,l,r;  G4{TJ,~  
!HSX:qAP$  
stack[++top]=0; CW'<Nh  
stack[++top]=data.length-1; 6r}w  
)Kg _E6  
while(top>0){ J  7]LMw7  
int j=stack[top--]; K?gO ]T{6  
int i=stack[top--]; #|;;>YnZ   
y2:Bv2}  
pivotIndex=(i+j)/2; Igb%bO_  
pivot=data[pivotIndex]; ^^kL.C Ym  
Dy^A??A[E}  
SortUtil.swap(data,pivotIndex,j); U{ ZKxE  
}ZkGH}K_}  
file://partition 7f\/cS^  
l=i-1; o>MB8[r  
r=j; /[=U$=uH  
do{ m?]= =9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '=1@,Skj-  
SortUtil.swap(data,l,r); y7-dae k  
} OJ,Z  
while(l SortUtil.swap(data,l,r); TF-a 1z  
SortUtil.swap(data,l,j); mExJ--}  
#bCzWg  
if((l-i)>THRESHOLD){ ea6`%,lF~  
stack[++top]=i; n+w$'l  
stack[++top]=l-1; 0*50uK=5  
} nAk;a|Q  
if((j-l)>THRESHOLD){ 0wZAsG"Bg  
stack[++top]=l+1; Py~N.@(:1u  
stack[++top]=j; wOrpp3I  
} Gn>~CoFN  
'$Fu3%ft  
} :Nl.< 6+  
file://new InsertSort().sort(data); of0 hJR  
insertSort(data); ldNWdz  
} ;`rz]7,*  
/** jGFDj"Y  
* @param data jOU1F1  
*/ 3 , nr*R!  
private void insertSort(int[] data) { ]X<L~s_*  
int temp; v\Edf;(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P;[>TCs ]8  
} AN4(]_ ]  
} LT6VZ,S  
} %)PQomn?  
O^<\]_l  
} 3y]rhB  
+Q&CIo  
归并排序:  H;Cv] -  
k*o>ZpjNH  
package org.rut.util.algorithm.support; 2br~Vn0N  
V<0J j  
import org.rut.util.algorithm.SortUtil; 7!('+x(>  
)d7U3i  
/** "j%L*J)  
* @author treeroot aKk0kC   
* @since 2006-2-2 "-A@d&5.  
* @version 1.0 `!7QegJa"  
*/ oxJ#NGD  
public class MergeSort implements SortUtil.Sort{ ^|lG9z%Foy  
6M X4h  
/* (non-Javadoc) ~[`*)(4E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .MI 5?]_  
*/ am# (ms  
public void sort(int[] data) { W;ADc2#)  
int[] temp=new int[data.length]; %\?Gzc_  
mergeSort(data,temp,0,data.length-1); [Ontip  
} u\P)x~-TM  
y];@ M<<?e  
private void mergeSort(int[] data,int[] temp,int l,int r){ @j+X>TD  
int mid=(l+r)/2; 'Z`fZ5q  
if(l==r) return ; _VI3b$  
mergeSort(data,temp,l,mid); ~=9]M.$  
mergeSort(data,temp,mid+1,r); CQ^I;[=d  
for(int i=l;i<=r;i++){ kf2e-)uUs  
temp=data; x(bM   
} (5&l<u"K~  
int i1=l; &E$:^a4d  
int i2=mid+1; .8/W_iC92  
for(int cur=l;cur<=r;cur++){ *[0)]|r  
if(i1==mid+1) Zm#qW2a]P  
data[cur]=temp[i2++]; Y"'k $jS-  
else if(i2>r) VDC"tSQ  
data[cur]=temp[i1++]; {6 brVN.V  
else if(temp[i1] data[cur]=temp[i1++]; }I ^e:,{  
else H`Ld,E2ex&  
data[cur]=temp[i2++]; r:9H>4m  
} ]-tAgNzl%  
} 5 @61=Au  
hSfLNvK  
} C^!ej"  
E K#ib  
改进后的归并排序: eVB.g@%T  
+d/^0^(D\5  
package org.rut.util.algorithm.support; kG|pM54:^  
[Se0+\,&  
import org.rut.util.algorithm.SortUtil; 2-.%WhE/  
C;.+ kE  
/** S[L2vM)  
* @author treeroot OCYC Dn  
* @since 2006-2-2 ybgAyJ{J<  
* @version 1.0 AAld2"r  
*/ IX y  $  
public class ImprovedMergeSort implements SortUtil.Sort { qD/FxR-!  
a@U0s+V&a0  
private static final int THRESHOLD = 10; v}-jls  
{GM8}M~D&  
/* SWM6+i p  
* (non-Javadoc) ]#Q'~X W  
* FAP1Bm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f+D a W  
*/ c0W4<(  
public void sort(int[] data) { dI|`"jl#  
int[] temp=new int[data.length]; vV+>JM6<K  
mergeSort(data,temp,0,data.length-1); 'ktWKW$ D  
} O4w:BWVsn  
{uuvgFC  
private void mergeSort(int[] data, int[] temp, int l, int r) { 'c|Y*2@  
int i, j, k; H-Z1i  
int mid = (l + r) / 2;  gC}D0l[  
if (l == r) 'P5|[du+  
return; =| M[JPr  
if ((mid - l) >= THRESHOLD) 20p/p~<  
mergeSort(data, temp, l, mid); (8/Qt\3jv  
else HOY9{>E}z  
insertSort(data, l, mid - l + 1); /"%QIy'{  
if ((r - mid) > THRESHOLD) 6 w:@i_2^  
mergeSort(data, temp, mid + 1, r); jt8% L[  
else *,=WaODO%  
insertSort(data, mid + 1, r - mid); MX#MDA-4  
Z`lCS o;  
for (i = l; i <= mid; i++) { *^5..0du  
temp = data; %*wOJx  
} hr] :bR  
for (j = 1; j <= r - mid; j++) { + s snCr  
temp[r - j + 1] = data[j + mid]; o4g<[X)  
} Uv"GG: K_  
int a = temp[l]; niIjatT  
int b = temp[r]; 1GL@t?S  
for (i = l, j = r, k = l; k <= r; k++) { M:OJL\0  
if (a < b) { 9AROvq|#  
data[k] = temp[i++]; I+^B] @"  
a = temp; 9#AsSbBpf  
} else { L?5OWVX!v  
data[k] = temp[j--]; YOHYXhc{S  
b = temp[j]; LYY|8)Nj2"  
} =w&<LJPJ  
} C4ut!I #  
} 2o5v{W  
uKZe"wN;  
/** #Ua+P(1q  
* @param data ,lly=OhKb  
* @param l %wp#vO-$  
* @param i #815h,nP+  
*/ Rtl;*ZAS  
private void insertSort(int[] data, int start, int len) { %Pb 5PIk4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  *R6n+d  
} #j{!&4M  
} L('G1J}  
} d#9"_{P  
} y`EcBf  
Gv,0{DVX<  
堆排序: ]'UO]i/  
2eBA&t  
package org.rut.util.algorithm.support; LF~=,S  
O/(qi8En  
import org.rut.util.algorithm.SortUtil; 2 S\~  
= e)[?{H  
/** +jD{ O @9  
* @author treeroot U&mJ_f#M  
* @since 2006-2-2 %q@eCN  
* @version 1.0 2\z"6  
*/ Pe !eID8  
public class HeapSort implements SortUtil.Sort{ Zbp ByRyN  
!m#cneV  
/* (non-Javadoc) 'sL>U$(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a9q68  
*/ wOy1i/oj  
public void sort(int[] data) { ZL`G<Mo;.  
MaxHeap h=new MaxHeap(); nuB@Fkr  
h.init(data); ,Jf)A/_  
for(int i=0;i h.remove(); d/GP.d  
System.arraycopy(h.queue,1,data,0,data.length); J(\"\Z  
} n NI V(  
_ID2yJ   
private static class MaxHeap{ Oifu ?f<r  
X"W%(x`w  
void init(int[] data){ In0kP"  
this.queue=new int[data.length+1]; *a@pZI0'  
for(int i=0;i queue[++size]=data; .Jz$)R  
fixUp(size); "9 -duDg  
} Y'n TyH  
} byv(:xk|'e  
HlB'yOHv!  
private int size=0; D4m2*%M  
X?b]5?K;r  
private int[] queue; & CiUU  
Hm+-gI3*  
public int get() { ,XW6W&vR;  
return queue[1]; <=V2~ asB  
} KLXv?4!  
l{4=La{?j  
public void remove() { ^)b*"o  
SortUtil.swap(queue,1,size--); !+.|T9P  
fixDown(1); w.cQ|_  
} vL13~q*F  
file://fixdown :rb<mg[  
private void fixDown(int k) { P sD+?  
int j; )@3ce'  
while ((j = k << 1) <= size) { QJo)  
if (j < size %26amp;%26amp; queue[j] j++; Xu$xO(  
if (queue[k]>queue[j]) file://不用交换 -pj&|< h+9  
break; JBa=R^k  
SortUtil.swap(queue,j,k); YizJT0$  
k = j; 9oP8| <+  
} J?-"]s`J  
} F]W'spF,  
private void fixUp(int k) { YF @'t~_Z  
while (k > 1) { j?6%=KuX<  
int j = k >> 1; qyc:;3?wm  
if (queue[j]>queue[k]) J W&/l  
break; >.PLD} zE_  
SortUtil.swap(queue,j,k); Q/iaxY#  
k = j; mqk~Pno|<  
} b^PYA_k-Xn  
} uj&^W[s  
A $W,#`E  
} @4h .?  
IBU(Hm1,  
} m4ovppC  
'oHtg @  
SortUtil:  KEsMes(*  
~,Q+E8  
package org.rut.util.algorithm; _U$d.B'*)z  
!O)Ruwy  
import org.rut.util.algorithm.support.BubbleSort; jh`&c{#*)M  
import org.rut.util.algorithm.support.HeapSort; XN]kNJX  
import org.rut.util.algorithm.support.ImprovedMergeSort; !:`QX\Ux  
import org.rut.util.algorithm.support.ImprovedQuickSort; B{QY-F~  
import org.rut.util.algorithm.support.InsertSort; GfY!~J  
import org.rut.util.algorithm.support.MergeSort; _C"W;n'  
import org.rut.util.algorithm.support.QuickSort; IZ3w.:A  
import org.rut.util.algorithm.support.SelectionSort; ^MUtmzh  
import org.rut.util.algorithm.support.ShellSort; Ol"p^sqwj  
vN 7a)s  
/** suaTXKjyk+  
* @author treeroot W*-+j*e|_P  
* @since 2006-2-2 _=j0Y=/IF  
* @version 1.0 bR49(K$~  
*/ ^Ebaq`{V\'  
public class SortUtil { x!MYIaZ7  
public final static int INSERT = 1; of8/~VO  
public final static int BUBBLE = 2; UBi0 /  
public final static int SELECTION = 3; +|Xx=1_?BK  
public final static int SHELL = 4; rayC1#f  
public final static int QUICK = 5; ?bQ~ +M\  
public final static int IMPROVED_QUICK = 6; Az6f I*yP  
public final static int MERGE = 7; _7]* 5Pxo  
public final static int IMPROVED_MERGE = 8; j* g5f  
public final static int HEAP = 9; WU{G_Fqaz  
sBq @W4  
public static void sort(int[] data) { qJVW :$1q  
sort(data, IMPROVED_QUICK); bKmR &  
} v%= G~kF}[  
private static String[] name={ .!,T> :R  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e0+N1kY  
}; e!ar:>T  
D>~z{H%\  
private static Sort[] impl=new Sort[]{ 4&r^mGs,  
new InsertSort(), o{?s\)aBa  
new BubbleSort(), DK&J"0jz,  
new SelectionSort(), LnxJFc:1K  
new ShellSort(), Wze\z  
new QuickSort(), ?A2#V(4  
new ImprovedQuickSort(), 5X nA.?F^  
new MergeSort(), {G/4#r 2>  
new ImprovedMergeSort(), ?H0 #{!s  
new HeapSort() &I:5<zK{  
}; mE%H5&VSI  
QgC  
public static String toString(int algorithm){ jw5Bbyk  
return name[algorithm-1]; W<xu*U(A  
} #)hM]=,e  
|JSj<~1ki  
public static void sort(int[] data, int algorithm) { L/"XIMI*Xg  
impl[algorithm-1].sort(data); ;a XcGa  
} l^%Ez?-:s  
/'u-Fr(Q+  
public static interface Sort { W'-B)li   
public void sort(int[] data); @.a[2,o_  
} pqBd#  
d11~ mU\  
public static void swap(int[] data, int i, int j) { ON~SZa  
int temp = data; gsqlWfa  
data = data[j]; 60*2k  
data[j] = temp; Aj;Z &  
} .4Jea#M&x  
} `Ou\:Iz0u  
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