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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。 rR ^o  
插入排序: TPx`qyW  
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package org.rut.util.algorithm.support; IRR b^Q6  
@-0mE_$[  
import org.rut.util.algorithm.SortUtil; Vug[q=i  
/** 'I}wN5`  
* @author treeroot @/N]_2@8;  
* @since 2006-2-2 14l6|a  
* @version 1.0  ngJ{az  
*/ #lik: ?  
public class InsertSort implements SortUtil.Sort{ :RDk{^b)  
p<pGqW  
/* (non-Javadoc) bz 7?F!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OZz/ip-!lc  
*/ Zcw <USF8  
public void sort(int[] data) { J@i9)D_  
int temp; Ik, N/[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9W-" mD;  
} i"+TKo-  
} j"Ew)6j  
} ^} Y}Iz  
@K S.H  
} [j TU nP  
Wc m'E3c,  
冒泡排序:  `wIWK7i  
C2b<is=H:  
package org.rut.util.algorithm.support; ;P}007;  
E:uTjXt  
import org.rut.util.algorithm.SortUtil; yW*,Llb5  
vV=rBO0a?  
/** Piw i  
* @author treeroot GBBp1i  
* @since 2006-2-2 ru/{s3  
* @version 1.0 #N|JC d_  
*/ ,y-!h@(  
public class BubbleSort implements SortUtil.Sort{ T tWzjt  
o:*$G~. k  
/* (non-Javadoc) *q\>DE=7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f8UJ3vB  
*/ 6~>h;wC  
public void sort(int[] data) { 2B)1 tP  
int temp; > Xij+tt{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Hj1?c,mo4  
if(data[j] SortUtil.swap(data,j,j-1); j%ZBAk)}  
} eNH9`Aa  
} I!(BwYd  
} ttB>PTg#  
} Q t>|TGz  
uK#2vgT  
} g-u4E^,*|  
6wbH{}\ll  
选择排序: 4$mtc*tzT  
LOG>x!  
package org.rut.util.algorithm.support; S !lrnH  
0ap'6  
import org.rut.util.algorithm.SortUtil; A@Zqh<,Ud  
M+j*5wNy  
/** 8N |K   
* @author treeroot A5\ Hq  
* @since 2006-2-2 n _x+xVi%  
* @version 1.0 p/l">d]+  
*/ p)z#%BY56  
public class SelectionSort implements SortUtil.Sort { oLq N  
'6g-]rE[  
/* lu+KfKa  
* (non-Javadoc) j B1ZF#  
* I#]pk!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C7AD1rl  
*/ ,h/l-#KS  
public void sort(int[] data) { f)Y~F/[$P  
int temp; :AQ9-&i/a-  
for (int i = 0; i < data.length; i++) { 3 _!MVT  
int lowIndex = i; ,_<|e\>~  
for (int j = data.length - 1; j > i; j--) { X(.[rC>  
if (data[j] < data[lowIndex]) { .r-Zz3  
lowIndex = j; "j_cI-@6  
} 6kAGOjO  
} ZCBF&.!  
SortUtil.swap(data,i,lowIndex); KLu Og$i  
} %<p/s;eu  
} Q W c^}#!!  
$-jj%kS  
} DvLwX1(l  
qu'D"0  
Shell排序: bI(8Um6m  
<$Sl%DoS  
package org.rut.util.algorithm.support; O.\\)8xA  
4#:Eq=(W  
import org.rut.util.algorithm.SortUtil; Jk7 Am-.0  
DSq?|H  
/** @,2,(=l*C  
* @author treeroot *5hbD-a:  
* @since 2006-2-2 0%q H=do6  
* @version 1.0 se]&)%p[  
*/ f+1'Ah0'E  
public class ShellSort implements SortUtil.Sort{ ?1O` Rd{tn  
BG.sHI{  
/* (non-Javadoc) xpu 2RE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f<|*^+  
*/ jY=M{?h''  
public void sort(int[] data) { q\gbjci  
for(int i=data.length/2;i>2;i/=2){ ~J5B?@2hK  
for(int j=0;j insertSort(data,j,i); C(z 'oi:f  
} ?<\2}1  
} ( *K)D$y  
insertSort(data,0,1); b5KK0Jjk  
} -II03 S1  
l[%=S!  
/** C?W}/r[  
* @param data 1{a4zGE?[  
* @param j p8?"}  
* @param i p=kt+H&;  
*/ z[O*f#t  
private void insertSort(int[] data, int start, int inc) { WIAukM8~  
int temp; k{hNv|:,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); BnDCK@+|Q  
} ^ZRZ0:rZ  
} GZn=Hgv8  
} jP2#w{xq  
|b^UPrz)VS  
} rce._w }  
a"t~ K  
快速排序: 4gVIuF*pS  
4vvQ7e7  
package org.rut.util.algorithm.support; iE_[]Vgc  
ma<uXq  
import org.rut.util.algorithm.SortUtil; 6R$Yh0%  
c6h+8QS  
/** ;+#Nb/M  
* @author treeroot ]$s b<o .a  
* @since 2006-2-2 rKT.~ZP\  
* @version 1.0 ">20`Mj8  
*/ _%\%  
public class QuickSort implements SortUtil.Sort{ 6-g>(g   
A;&YPHB  
/* (non-Javadoc) /EegP@[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c9c3o{(6Y  
*/ )~ &gBX  
public void sort(int[] data) { `CBXz!v!O  
quickSort(data,0,data.length-1); o61rTj  
} Qgv g*KX  
private void quickSort(int[] data,int i,int j){ D/;[x{;E  
int pivotIndex=(i+j)/2; YTTi j|(  
file://swap &@BAVc z  
SortUtil.swap(data,pivotIndex,j); Ai^0{kF6  
JL{fW>5y|  
int k=partition(data,i-1,j,data[j]); <r>Sj /w<D  
SortUtil.swap(data,k,j); WiQVZ {  
if((k-i)>1) quickSort(data,i,k-1); \i}-Y[Dg  
if((j-k)>1) quickSort(data,k+1,j); Aho*E9VW  
M&gi$Qs[E  
} T/ eX7p1  
/** .5s^a.e'O  
* @param data P|p X F~  
* @param i =K|#5p`  
* @param j ]l+<-  
* @return N^PkSf[)h5  
*/ @$;8k }  
private int partition(int[] data, int l, int r,int pivot) { =VT\$ 5A  
do{ Qnt9x,1m_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #Q-#7|0&  
SortUtil.swap(data,l,r); /`nkz  
} ]s E)-8  
while(l SortUtil.swap(data,l,r); @3=q9ftm  
return l; H!OX1F  
} Iu5 9W >  
8t) g fSG  
} 1w7XM0SHcn  
b?lRada{I  
改进后的快速排序: N7 hlM  
euRKYGW  
package org.rut.util.algorithm.support; GRVF/hPn  
mpVD;)?JmM  
import org.rut.util.algorithm.SortUtil; %;= ?r*]  
3;wiwN'  
/** N`3^:EJL8  
* @author treeroot v;Q*0%~  
* @since 2006-2-2 ;(;~yB|NZ5  
* @version 1.0 Doq}UWp  
*/ KhX)maQ  
public class ImprovedQuickSort implements SortUtil.Sort { j{2 0  
Dv` "3  
private static int MAX_STACK_SIZE=4096; 3^-R_  
private static int THRESHOLD=10; ~gOZ\jm}  
/* (non-Javadoc) >H5t,FfQL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ocMTTVo  
*/ kzNRRs\e  
public void sort(int[] data) { KK4e'[Wf  
int[] stack=new int[MAX_STACK_SIZE]; R#8cOmZ  
h x8pg,X  
int top=-1; Tp.]{*  
int pivot; .3VL  
int pivotIndex,l,r; @p}_"BHYWt  
%hw4IcWJ|  
stack[++top]=0; K IR3m )  
stack[++top]=data.length-1; & ,:!gYN  
zxD=q5in  
while(top>0){ *//z$la  
int j=stack[top--]; `kv7Rr}Q  
int i=stack[top--]; ["Tro;K#  
#CAZ}];Qx  
pivotIndex=(i+j)/2; m']$)Iqw  
pivot=data[pivotIndex]; }u$c*}  
BYHyqpP9  
SortUtil.swap(data,pivotIndex,j); GM1.pVb  
t%5bDdo  
file://partition [e@m -/B  
l=i-1; OI78wG  
r=j; in,0(I&I  
do{ )'e1@CR  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wq!9wk9  
SortUtil.swap(data,l,r); tX@y ]"  
} _T~&kwe  
while(l SortUtil.swap(data,l,r); VAUd^6Xdwx  
SortUtil.swap(data,l,j); 1>Vq<z  
A-_M=\  
if((l-i)>THRESHOLD){ T /IX(b'<  
stack[++top]=i; K`uPPyv  
stack[++top]=l-1; Nq\)o{<1  
} `.3.n8V  
if((j-l)>THRESHOLD){ ADB)-!$xoi  
stack[++top]=l+1; O;McPw<&\:  
stack[++top]=j; 2@pEiq3  
} E_[a|N"D  
z8%qCq  
} zSk`Ou8M  
file://new InsertSort().sort(data); F$|:'#KN  
insertSort(data); }NG P!  
} NV?XZ[<*<  
/** -)Vy)hD,  
* @param data bwP@}(K  
*/ s|c}9/Xe)  
private void insertSort(int[] data) { OpU9:^ r  
int temp; s'l|Ii  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \w1',"l`  
} !wfUD2 K1  
} .f;@O qU  
} %H&WihQ  
=_g#I  
} J|be'V#]1  
#902x*Z'c"  
归并排序: [q_62[-X  
/L@o.[H  
package org.rut.util.algorithm.support; re#]zc<  
V*(x@pF  
import org.rut.util.algorithm.SortUtil; ahCwA}  
NG:4Q.G1g  
/** @OUBo;/  
* @author treeroot JdUdl_D z  
* @since 2006-2-2 TgDT  
* @version 1.0 _/cX!/"  
*/ &b*v7c=o  
public class MergeSort implements SortUtil.Sort{ ,,80nW9E  
w L>*WLfR  
/* (non-Javadoc) #Z `Tk)u/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) omy3<6  
*/ iyr8*L\  
public void sort(int[] data) { 99By.+~pX  
int[] temp=new int[data.length]; hu"-dT;4]  
mergeSort(data,temp,0,data.length-1); C"0 VOb  
} )D'# >!Y  
be]/ROP>H  
private void mergeSort(int[] data,int[] temp,int l,int r){ |wQ3+WN|  
int mid=(l+r)/2; sKR%YK "A  
if(l==r) return ; ;V?(j 3b[  
mergeSort(data,temp,l,mid); \T<F#a  
mergeSort(data,temp,mid+1,r); q+<,FdG  
for(int i=l;i<=r;i++){ $?gKIv>g  
temp=data; (Pw,3CbJ  
} )dEcKH<#  
int i1=l; Otq1CD9  
int i2=mid+1; @W @,8e]c  
for(int cur=l;cur<=r;cur++){ v3t<rv  
if(i1==mid+1) KU0Ad);e  
data[cur]=temp[i2++]; q(hBqUW  
else if(i2>r) T \- x3i  
data[cur]=temp[i1++]; \dE{[^.5  
else if(temp[i1] data[cur]=temp[i1++]; OK`^DIr5l  
else (f_J @n  
data[cur]=temp[i2++]; T<Qa`|5 >  
} & ?5)Jis:  
} B~qo^ppVU  
i!3*)-a\~`  
} \ISg6v{/  
Le bc @,  
改进后的归并排序: T;{:a-8  
(. YSs   
package org.rut.util.algorithm.support; EL z5P}L6  
Ars*H,9>e  
import org.rut.util.algorithm.SortUtil; 4@<wN \'  
+|pYu<OY  
/** gae=+@z  
* @author treeroot 5T(cy  
* @since 2006-2-2 7,Z<PE  
* @version 1.0 gV\Y>y4v  
*/ ZfVY:U:o>  
public class ImprovedMergeSort implements SortUtil.Sort { EK0~ 3HSZ  
V\r{6-%XiW  
private static final int THRESHOLD = 10; _:5t~29  
8)pL0bg  
/* W7_m,{q  
* (non-Javadoc) VnB HQ.C  
* OQ 4h8,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $XMpC{  
*/ l=Pw yJ  
public void sort(int[] data) { Pw7uxN`  
int[] temp=new int[data.length]; P,WQN[(+  
mergeSort(data,temp,0,data.length-1); }opMf6`w  
} 1|H4]!7kE  
UhkL=+PD  
private void mergeSort(int[] data, int[] temp, int l, int r) { @H+L1H%9n  
int i, j, k; kdV9F  
int mid = (l + r) / 2; ME]89 T &  
if (l == r) 98?O[=  
return; =ePX^J*M'  
if ((mid - l) >= THRESHOLD) 8+".r2*_iO  
mergeSort(data, temp, l, mid); fB,eeT1v?h  
else $ywROa]  
insertSort(data, l, mid - l + 1); 9b,0_IMHH  
if ((r - mid) > THRESHOLD) J:ka@2>|  
mergeSort(data, temp, mid + 1, r); |r)QkxdU,  
else V,'_BUl+x  
insertSort(data, mid + 1, r - mid); _j0xL{&&  
rbIYLVA+V  
for (i = l; i <= mid; i++) { afD {w*[8  
temp = data; p>3QW3<  
} a;-%C{S9r  
for (j = 1; j <= r - mid; j++) { % a.T@E  
temp[r - j + 1] = data[j + mid]; :?FHqfN?_  
} EfpMzD7/(  
int a = temp[l]; uWFyI"  
int b = temp[r]; ;PU'"MeB "  
for (i = l, j = r, k = l; k <= r; k++) { _FcTY5."S  
if (a < b) { UHU ,zgM  
data[k] = temp[i++]; xaoR\H  
a = temp; (&r` l&0  
} else { [UC_  
data[k] = temp[j--]; W(4$.uZ)  
b = temp[j]; g.%} +5  
} s3Zt)xQ3  
} v#<{Y' K  
} xVX:kDX  
x{K"z4xbI  
/** 7l =Tl[n  
* @param data Vky]In=  
* @param l V mQ'  
* @param i mEi(DW)(  
*/ Qy[S~D_  
private void insertSort(int[] data, int start, int len) { =&9c5"V&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |pG0 .p4  
} BOcD?rrZ0  
} p9u'nDi  
} R4JfH  
} ElDeXLr'  
K\8zhY  
堆排序: U:3O E97  
33D2^ Sf6"  
package org.rut.util.algorithm.support; =mPe wx'  
%eIaH!x:  
import org.rut.util.algorithm.SortUtil; wF%RM$  
rKFnivGT  
/** $M!iQ"bb  
* @author treeroot w4}Q6_0v  
* @since 2006-2-2 K{`R`SXD  
* @version 1.0 lA1  
*/ w3sU&  |N  
public class HeapSort implements SortUtil.Sort{ _O'!C!K6  
5~jz| T}s  
/* (non-Javadoc) U] GD6q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4pQf*l8e  
*/ j|&D(]W/  
public void sort(int[] data) {  zy"k b  
MaxHeap h=new MaxHeap(); L]!![v.VY  
h.init(data); #ley3rJW]  
for(int i=0;i h.remove(); !!V1#?0jw  
System.arraycopy(h.queue,1,data,0,data.length); Ev7v,7`z  
} (jj`}Qe3U  
<Z.{q Zd  
private static class MaxHeap{ !QbuOvw  
]d7A|)q  
void init(int[] data){ C,$o+q*)W9  
this.queue=new int[data.length+1]; w%iw xo   
for(int i=0;i queue[++size]=data; ){'<67dK  
fixUp(size); /d:hW4}<}.  
} Y_jc*S  
} D|m3. si  
/VufL+q1  
private int size=0; *>mjUT}cP  
"-X8  
private int[] queue; s2|.LmC3|B  
S1Od&v[R  
public int get() { /^k%sG@?  
return queue[1]; A/UOcl+N  
} dhnX\/  
!y/e Fx  
public void remove() { vazA@|^8  
SortUtil.swap(queue,1,size--); Y`eF9Im,  
fixDown(1); "!AtS  
} =SeQ- H#  
file://fixdown !o?&{"#+  
private void fixDown(int k) { jIrfJ*z  
int j; $':5uU1}  
while ((j = k << 1) <= size) { T|D^kL%m!  
if (j < size %26amp;%26amp; queue[j] j++; jN*wbqL  
if (queue[k]>queue[j]) file://不用交换 {J,"iJKop  
break; ^0}wmxDq  
SortUtil.swap(queue,j,k); js Z"T  
k = j; RN[x\",  
} lMu-,Z="  
} ,tg]Gt  
private void fixUp(int k) { !9KDdU  
while (k > 1) { W#NZnxOX"  
int j = k >> 1; \#Jq%nd  
if (queue[j]>queue[k]) -=gI_wLbM  
break; ]a&riPh"  
SortUtil.swap(queue,j,k); }[UH1+`L  
k = j; pL;e(lM  
} ~?fl8RF\  
} MD<x{7O12>  
nw`rH*  
} YsVKdh  
e Ru5/y~  
} HK<S|6B7V  
u pUJF`3  
SortUtil: 26k~Z}  
\$DBtq5=  
package org.rut.util.algorithm; [f  lK  
?6&G:Uz/  
import org.rut.util.algorithm.support.BubbleSort; KGo^>us  
import org.rut.util.algorithm.support.HeapSort; 8,[ *BgeX  
import org.rut.util.algorithm.support.ImprovedMergeSort; .JB1#&B +  
import org.rut.util.algorithm.support.ImprovedQuickSort; F*Hovxez  
import org.rut.util.algorithm.support.InsertSort; [hg9 0Q6  
import org.rut.util.algorithm.support.MergeSort; Kg>B$fBx)  
import org.rut.util.algorithm.support.QuickSort; YlG#sBzl  
import org.rut.util.algorithm.support.SelectionSort; L xIKH G  
import org.rut.util.algorithm.support.ShellSort; ^w``(-[*  
>#;;g2UV  
/**  WTl0}wi  
* @author treeroot O{\<Izm`D  
* @since 2006-2-2 VBDb K|  
* @version 1.0 MmvOyK NZF  
*/ $^ ^M&[b-  
public class SortUtil { ',WJ'g  
public final static int INSERT = 1; c U(z5th  
public final static int BUBBLE = 2; HDzeotD  
public final static int SELECTION = 3; @}!?}QU  
public final static int SHELL = 4; uaKbqX  
public final static int QUICK = 5; V( 0Y   
public final static int IMPROVED_QUICK = 6; SIR2 Kc0  
public final static int MERGE = 7; ~p n$'1Q  
public final static int IMPROVED_MERGE = 8; MoEh25U.  
public final static int HEAP = 9; Hmhsb2`\  
Viw,YkC  
public static void sort(int[] data) { Ps\4k#aOv  
sort(data, IMPROVED_QUICK); R_GA`U\ {  
} -X%t wy=  
private static String[] name={ U"Bge\6x=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <zvtQ^{]  
}; _4SZ9yu  
# .(f7~  
private static Sort[] impl=new Sort[]{ u^E0u^  
new InsertSort(), ELMz~vp  
new BubbleSort(), A&v Qtd  
new SelectionSort(), 9IG<9uj  
new ShellSort(), (0LA.aBIf  
new QuickSort(), 'sa)_?Hy  
new ImprovedQuickSort(), #Y-_kQV*  
new MergeSort(), *)^ ZUk  
new ImprovedMergeSort(), d$+0 ;D4E  
new HeapSort() *9=}f;~  
};  (yd(ZY  
@zi0:3`#0\  
public static String toString(int algorithm){ pG)dF@  
return name[algorithm-1]; l,b,U/3R.  
} o(l%k},a  
)AdwA+-x  
public static void sort(int[] data, int algorithm) { UCj+V@{  
impl[algorithm-1].sort(data); sIaehe'B  
} >Sk%78={R  
d`$w3Hy  
public static interface Sort { +cmi?~KS*  
public void sort(int[] data); <GQ=PrT|/  
} WpE "A  
Xf7]+  
public static void swap(int[] data, int i, int j) { 30Qp:_D  
int temp = data; $qg2@X.  
data = data[j]; .:Wp9M  
data[j] = temp; `<<9A\Y-f  
} >>C S8  
} zlQBBm;fE  
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