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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。 nEVbfNo0  
插入排序: Mo|yv[(K ,  
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package org.rut.util.algorithm.support; YN^jm  
oFyeH )!  
import org.rut.util.algorithm.SortUtil; P`2&*2,  
/** zPBfiK_hV  
* @author treeroot Xiju"Cup"  
* @since 2006-2-2 gb_X?j%p7  
* @version 1.0 wP`sXPSmIu  
*/  coAW9=o}  
public class InsertSort implements SortUtil.Sort{ eBvW#Hzp  
Z3`2-r_=  
/* (non-Javadoc) }xJR.]).KW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3kw}CaZ6  
*/ xMsGs  
public void sort(int[] data) { )Pa*+ew7  
int temp; ]wf |PU~nr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u:5IjOb2^  
} Oxj(g;}  
} *H*\gaSh  
} Y-~;E3(  
GC?S];PL  
} g< )72-h  
lPp6 pVr  
冒泡排序: "G kI5!  
NDW8~lkL  
package org.rut.util.algorithm.support; "aA_(Ydzj  
Xq%*# )M;  
import org.rut.util.algorithm.SortUtil; O\JD,w  
jJ-d/"(  
/** V0T<eH<  
* @author treeroot oT!/J  
* @since 2006-2-2 :p$EiR  
* @version 1.0 z5ZKks   
*/ ] umZJZ#Y  
public class BubbleSort implements SortUtil.Sort{ jMqx   
F,.Q|.nN  
/* (non-Javadoc) ,4yG(O$)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w>vmF cp  
*/ fO+U HSC  
public void sort(int[] data) { 3FY_A(+  
int temp; #nbn K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ *+W6 P.K  
if(data[j] SortUtil.swap(data,j,j-1); xv&S[=Dt  
} oB}K[3uB:t  
} LV\ieM  
} We\Y \*!v  
} \gP. \  
/pU|ZA.z'2  
} d}VALjXHX!  
t .L4%1OF  
选择排序: |Z!@'YB  
:@;6  
package org.rut.util.algorithm.support; uZ<%kV1B  
, | <jjq)  
import org.rut.util.algorithm.SortUtil; -[<vYxX:h:  
K+-zY[3  
/** F'ENq6  
* @author treeroot &|NZ8:*+#  
* @since 2006-2-2 3FuCW  
* @version 1.0 'DeW<Sa~  
*/ a>?p.!BM  
public class SelectionSort implements SortUtil.Sort { bZK+9IR  
YPG,9iZ&f  
/* <oZ(ng@X  
* (non-Javadoc) A{M+vsL  
* IuDT=A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &p )@8HY  
*/ iA&oLu[y3  
public void sort(int[] data) { qz87iJp&  
int temp; /Go>5 B>  
for (int i = 0; i < data.length; i++) { f!EOYowW  
int lowIndex = i; IQ=CNby:  
for (int j = data.length - 1; j > i; j--) { wn{]#n=|l  
if (data[j] < data[lowIndex]) { InP[yFV-z  
lowIndex = j; ~@?"' !U  
} _~:j3=1&n  
} /[6:LnaE  
SortUtil.swap(data,i,lowIndex); *b:u * `@  
} e$H|MdYIA  
} q _19&;&  
YK7\D:  
} @OY1`Eu O  
nZ541o@t9  
Shell排序: xl|ghjn  
u*U_7Uw$  
package org.rut.util.algorithm.support; A%P 8c  
\4/:^T}*  
import org.rut.util.algorithm.SortUtil; gu^_iU  
k+f1sV[4}  
/** t[/\KG8  
* @author treeroot 2'|XtSj  
* @since 2006-2-2 ,YQ=Zk)w  
* @version 1.0 IL2e6b  
*/ wG;}TxrLS  
public class ShellSort implements SortUtil.Sort{ :ao^/&HZ  
g(KK9Unu  
/* (non-Javadoc) n}VbdxlN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~37R0`C  
*/ 48H5_9>:  
public void sort(int[] data) { IN<:P  
for(int i=data.length/2;i>2;i/=2){ >G<4R o"  
for(int j=0;j insertSort(data,j,i); f_~}X#._  
} LgO i3  
} J1nXAh)J  
insertSort(data,0,1); 'w'Dwqhmr  
} A\Lr<{Jh  
H]VsOr  
/** V/@[%w=  
* @param data >).@Nb;e  
* @param j ix(U:'{  
* @param i cO8`J&EK  
*/ 3L?WTS6(u  
private void insertSort(int[] data, int start, int inc) { H U:1f)a a  
int temp; FK-}i|di  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wEZ,49  
} G% o7BX  
} H]Y#pL u|  
} i<'{Y  
t) ;   
} |GJBwrL^0  
PG\\V$}A(  
快速排序: 'uws  
,\BfmC_i  
package org.rut.util.algorithm.support; )lQN)! .)  
0T7M_G'5Q  
import org.rut.util.algorithm.SortUtil; Xs{/}wc.q;  
+dDJes!]  
/** qK<aZ%V  
* @author treeroot FrgW7`s[A  
* @since 2006-2-2 YN_X0+b3C  
* @version 1.0 @QvfN>T  
*/ 32M6EEmPG  
public class QuickSort implements SortUtil.Sort{ 5JO[+>  
xWd9%,mDNR  
/* (non-Javadoc) M|1eqR%x-?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N5[_a/  
*/ ~l;yr @  
public void sort(int[] data) { (PRaiE  
quickSort(data,0,data.length-1); s4!|v`+$M  
} H?rSP0.  
private void quickSort(int[] data,int i,int j){ cZPbD;e:  
int pivotIndex=(i+j)/2; 1-4   
file://swap Q,OkO?uY  
SortUtil.swap(data,pivotIndex,j); ztRWIkI q  
=~,$V<+c  
int k=partition(data,i-1,j,data[j]); %{N>c:2I$  
SortUtil.swap(data,k,j); sZ0g99eX  
if((k-i)>1) quickSort(data,i,k-1); L+v8E/W  
if((j-k)>1) quickSort(data,k+1,j); l*~"5f03  
~+sne7 6 U  
} U;x99Go:  
/** ]$*$0  
* @param data HY*l4QK  
* @param i Q3 K;kS  
* @param j k/$Ja;  
* @return SS >:Sw  
*/ oA(. vr  
private int partition(int[] data, int l, int r,int pivot) { ]s1TJw [B  
do{ :7HVBH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~Da >{zHt  
SortUtil.swap(data,l,r); =YS!soO  
} ]hCWe0F  
while(l SortUtil.swap(data,l,r); s98: *o3  
return l; D<+ bzC  
} E#yCcC!wMY  
[X0k{FR  
} g @c=Bt$  
&. |;yt%v  
改进后的快速排序: TKj/6Jz|  
u i s:\Uc  
package org.rut.util.algorithm.support; T=hm#]   
7H8GkuO  
import org.rut.util.algorithm.SortUtil; 44Seq  
P^'>dOI0w  
/** 9+WY@du+  
* @author treeroot `D&#U'wB   
* @since 2006-2-2 Bbn832iMUY  
* @version 1.0 5^G7pI7  
*/ N[|by}@n  
public class ImprovedQuickSort implements SortUtil.Sort { }'@tA")-)  
*#X+Gngo  
private static int MAX_STACK_SIZE=4096; 8eg2o$k_,#  
private static int THRESHOLD=10; F9>(W#aC  
/* (non-Javadoc) lW{I`r\]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )W_ Y3M,  
*/ ,*9#c*'S  
public void sort(int[] data) { z/ c'Z#w%  
int[] stack=new int[MAX_STACK_SIZE]; Y{x[N}h  
*~\;&G29Y  
int top=-1; aufcd57  
int pivot; b;&Yw-\nZ;  
int pivotIndex,l,r; bTA14&& q  
$6 Q2)^LJ  
stack[++top]=0; Z7K!"I  
stack[++top]=data.length-1; ^*$WZMMJ1  
NKIkd  
while(top>0){ 'ugR!o1  
int j=stack[top--]; S4@117z5  
int i=stack[top--]; ~|$) 1  
MSxU>FX0  
pivotIndex=(i+j)/2; bi4^ zaCEE  
pivot=data[pivotIndex]; g/n"N>L  
S[\cT:{OE  
SortUtil.swap(data,pivotIndex,j); 8ESkG  
m%BMd  
file://partition jS5t?0  
l=i-1; f"} 0j|Gg  
r=j; ;I0yQlx|U  
do{ a8lo!e9q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 'xu7AKpU)  
SortUtil.swap(data,l,r); ul5::  
} A_X^k|)T  
while(l SortUtil.swap(data,l,r); IArpCF/"8  
SortUtil.swap(data,l,j); 8&`T<ECq>  
v]d?6g  
if((l-i)>THRESHOLD){ I%VV4,I&pK  
stack[++top]=i; 7@e[:>e  
stack[++top]=l-1; U3VsMV*Y  
} j3V"d3)  
if((j-l)>THRESHOLD){ R[ +]d|L  
stack[++top]=l+1; MOH,'@&6^  
stack[++top]=j; do :RPZ!  
} 5BGv^Qb_2  
<try%p|f  
} 0zq\ j  
file://new InsertSort().sort(data); =:0IHyB#0  
insertSort(data); ej??j<]  
} $yxIE}  
/** CO6XIgTe  
* @param data 4^jZv$l5  
*/ p lz=G}Y  
private void insertSort(int[] data) { XQJV.SVS  
int temp; }gi`?58J6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @Z1?t%1  
} m-pIFL<^N  
} I{X@<o}  
} 6=[ PJM  
 (t]R#2{  
} swe8  
'DB({s  
归并排序: @)M.u3{\  
)9;kzp/  
package org.rut.util.algorithm.support; X~/ 9Vd g  
YRT}fd>R&  
import org.rut.util.algorithm.SortUtil; [;kj,j  
!UPAEA  
/** R.n`R|NOd  
* @author treeroot 5Dh&ez`oR'  
* @since 2006-2-2 $(<*pU  
* @version 1.0 Xb07 l3UG  
*/ s$=B~l  
public class MergeSort implements SortUtil.Sort{ fjeE.  
B+e~k?O]1  
/* (non-Javadoc) xX67bswG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WY ^K7U  
*/ <P Z\qE*+y  
public void sort(int[] data) { _ZvX"{y~  
int[] temp=new int[data.length]; g]hn@{[  
mergeSort(data,temp,0,data.length-1); [+[fD  
} fe]T9EDA  
^dp[ Z,[1z  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ni;{\"Gt  
int mid=(l+r)/2; =K&q;;h  
if(l==r) return ; &b#NF1Q.  
mergeSort(data,temp,l,mid); vA $BBXX  
mergeSort(data,temp,mid+1,r); D\i8rqU/l  
for(int i=l;i<=r;i++){ jind!@}!  
temp=data; rH9|JEz  
} {Ac3/UM/  
int i1=l; Q!$kUcky9  
int i2=mid+1; q?b)zeJ  
for(int cur=l;cur<=r;cur++){ QH56tQq  
if(i1==mid+1) ;kcFQed\w  
data[cur]=temp[i2++]; xdSj+507  
else if(i2>r) Zp P6Q  
data[cur]=temp[i1++]; lVK F^-i  
else if(temp[i1] data[cur]=temp[i1++]; {gq:sj>  
else /)HEx&SQmZ  
data[cur]=temp[i2++]; ^SES')x  
} m]b.P,~v  
} jl|X$w  
i =+<7]Q  
} r'}k`A 5>  
P|QnZ){  
改进后的归并排序: W71#NjM2Z  
;R-Q,aCM}  
package org.rut.util.algorithm.support; u=?P*Y/|W  
'J<zVD}0  
import org.rut.util.algorithm.SortUtil; "\P~Re"EH  
Ffqn|} gb  
/** :Y&W)V-  
* @author treeroot ?F:C!_  
* @since 2006-2-2 N/SB}F j  
* @version 1.0 )}Mt'd  
*/ Ay. q)  
public class ImprovedMergeSort implements SortUtil.Sort { jZgnt{  
r4qV}-E  
private static final int THRESHOLD = 10; ^*T{-U'  
Xv;ZAa  
/* D_`)T;<Sp  
* (non-Javadoc) >w'?DV>u|  
* xo@/k   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {hp@j#  
*/ l=G#gKE  
public void sort(int[] data) { 'Rf#1ls#  
int[] temp=new int[data.length]; n@8{FoF  
mergeSort(data,temp,0,data.length-1); qv >(  
} XT;IEZQZ  
dXSb%ho  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2T?1X{g  
int i, j, k; ?@7|Q/  
int mid = (l + r) / 2; ErUk>V  
if (l == r) .*..pf|/  
return; eFI9S.6  
if ((mid - l) >= THRESHOLD) >WG91b<Xq  
mergeSort(data, temp, l, mid); dJgOfg^  
else GAe_Z( T  
insertSort(data, l, mid - l + 1); $+yQ48Wq  
if ((r - mid) > THRESHOLD) 3xR#,22:}  
mergeSort(data, temp, mid + 1, r); H<3b+Sg  
else k{$"-3ed  
insertSort(data, mid + 1, r - mid); Z)>a6s$ih<  
q+=@kXs>+  
for (i = l; i <= mid; i++) { [ Sa C  
temp = data; bSKV|z/x  
} M;@03 x W  
for (j = 1; j <= r - mid; j++) { yH0ZSv  
temp[r - j + 1] = data[j + mid]; *fyEw\`a  
} P=hf/jOv9  
int a = temp[l]; )HiTYV)]'  
int b = temp[r]; nWg)zj:  
for (i = l, j = r, k = l; k <= r; k++) { k.VOS 0  
if (a < b) { K":tr~V;  
data[k] = temp[i++]; -"b3q  
a = temp; IOsDVIXL\  
} else { t ,Rn  
data[k] = temp[j--]; Nd!=3W5?  
b = temp[j]; Wam?(!{mOf  
} i]Of<eQ"  
} (4gQe6tA  
} <Gt{(is  
>Qu^{o  
/** R-0Ohj  
* @param data J;9QDrl`  
* @param l QRix_2+  
* @param i I ywx1ac  
*/ GOgT(.5  
private void insertSort(int[] data, int start, int len) { ]t0S_ UH$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V)?g4M3}  
} i(#c Yb  
} rm;"98~zJ?  
} , X+(wp  
} 4E94W,1%,Y  
LPgI"6cP  
堆排序: .EELR]`y7I  
|xC TX  
package org.rut.util.algorithm.support; X64I~*  
Rs`Y'_B  
import org.rut.util.algorithm.SortUtil; LU=)\U@Q  
f*@:{2I.v  
/** Z1}zf( JU  
* @author treeroot ooxzM `  
* @since 2006-2-2 _^A NJ7  
* @version 1.0 YR`rg;n#  
*/ F#R\Ot,hv  
public class HeapSort implements SortUtil.Sort{  K8we*  
soCHwiE  
/* (non-Javadoc) =5#Jsn?U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c.> (/  
*/ fXQRsL8 ]  
public void sort(int[] data) { "C|l3X'  
MaxHeap h=new MaxHeap(); G+p>39P   
h.init(data); +u)$o  
for(int i=0;i h.remove(); PA[Rhoit,  
System.arraycopy(h.queue,1,data,0,data.length); s&hP^tKT  
} `h]f(  
Y3&ecEE  
private static class MaxHeap{ F'Vl\qPt  
sM_e_e  
void init(int[] data){ U Bg_b?k  
this.queue=new int[data.length+1]; *a.*Ha  
for(int i=0;i queue[++size]=data; |a\TUzq  
fixUp(size); nA j2k  
} @=1``z#  
} b DvbM  
eF\C?4  
private int size=0; J4X35H=Z  
N#ObxOE6T"  
private int[] queue; \mG M#E  
Ji=iq=S7  
public int get() { DgP%Q  
return queue[1]; vGDo?X~#o  
} 9^olAfX`dB  
xb;m m9H  
public void remove() { MPc=cLv  
SortUtil.swap(queue,1,size--); uwzT? C A6  
fixDown(1); K>6p5*&  
} znRhQ+8;!  
file://fixdown g>CQO,s;w  
private void fixDown(int k) { {P+[C O  
int j; Puh&F< B  
while ((j = k << 1) <= size) { ?Ea"%z*c5  
if (j < size %26amp;%26amp; queue[j] j++; u{z{3fW_  
if (queue[k]>queue[j]) file://不用交换 'kK%sE   
break; oPBjsQ  
SortUtil.swap(queue,j,k); x=)$sD-3  
k = j;  (La  
} ,oil}N(  
} /L^dHI]Q  
private void fixUp(int k) { }5U f`pM8  
while (k > 1) { 6Fb~`J~s  
int j = k >> 1; dG+xr!  
if (queue[j]>queue[k]) *@^0xz{\z  
break; tTt~W5lo  
SortUtil.swap(queue,j,k); TQH#sx  
k = j; +Eg# 8/q  
} * vD<6qf  
} E(#2/E6  
h='=uj8o5  
} NR{:4zJT  
.EwK>ro4  
} H'>  
7m:,-xp  
SortUtil: i/z7a%$   
],|B4\b;  
package org.rut.util.algorithm; UJ:B:hh''  
 j C?  
import org.rut.util.algorithm.support.BubbleSort; (0S7  
import org.rut.util.algorithm.support.HeapSort; rJ>8|K[kt  
import org.rut.util.algorithm.support.ImprovedMergeSort; NBX/V^  
import org.rut.util.algorithm.support.ImprovedQuickSort; *Yw6UCO  
import org.rut.util.algorithm.support.InsertSort; R#M).2::  
import org.rut.util.algorithm.support.MergeSort; :Ib\v88WIv  
import org.rut.util.algorithm.support.QuickSort; d\M !o*U  
import org.rut.util.algorithm.support.SelectionSort; jK53-tF~I  
import org.rut.util.algorithm.support.ShellSort; ;*p} ~#2  
J)o%83//  
/** ,?+yu6eLb  
* @author treeroot `RRORzXoS  
* @since 2006-2-2 +l(}5(wc  
* @version 1.0 3OlY Ml  
*/ I5]zOKlVR  
public class SortUtil { w0iE x1i  
public final static int INSERT = 1; rB]/N,R   
public final static int BUBBLE = 2; u.6%n. g  
public final static int SELECTION = 3; {'%=tJ[YX  
public final static int SHELL = 4; TF>F7v(,45  
public final static int QUICK = 5; da@ .J9  
public final static int IMPROVED_QUICK = 6; v#xF;@G  
public final static int MERGE = 7; |Oe6OCPf  
public final static int IMPROVED_MERGE = 8; Wt =[R 4=  
public final static int HEAP = 9; 2_Z6 0]  
9 pn1d.  
public static void sort(int[] data) { It[~0?+  
sort(data, IMPROVED_QUICK); FBsw\P5w  
} 0'uj*Y{L  
private static String[] name={ hkG<I';M?M  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0ZN/-2c A#  
}; mf#oa~_  
WyP1"e^ 9  
private static Sort[] impl=new Sort[]{ ZUycJ-[  
new InsertSort(), #A!0KN;GC2  
new BubbleSort(), cf9y0  
new SelectionSort(), {;U:0BPI3  
new ShellSort(), Nsq%b?#  
new QuickSort(), iKwVYL  
new ImprovedQuickSort(), .PgkHb=l@  
new MergeSort(), *6L^A`_1]  
new ImprovedMergeSort(), uY,FugWbl  
new HeapSort() ln5On_Wm  
}; & BkNkb0  
k>"I!&#g  
public static String toString(int algorithm){ Ad`IgZ  
return name[algorithm-1]; X9R-GT  
}  ~$B ,K]  
eR CGr?e4  
public static void sort(int[] data, int algorithm) { P\JpE  
impl[algorithm-1].sort(data); j*"s~8u4  
} H UjmJu6f{  
2k_Bo~.  
public static interface Sort { sdLFBiR  
public void sort(int[] data); {<@~;iq  
} /.r($S g^  
15COwc*k  
public static void swap(int[] data, int i, int j) { ?4_;9MkN  
int temp = data; _[ x(p6Xp  
data = data[j]; 8'y|cF%U  
data[j] = temp; %}/)_RzQ  
} 4J  s>yP  
} r"+ WUU  
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