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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。 5Y4 i|R  
插入排序: z'G~b[kG4n  
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package org.rut.util.algorithm.support; =/k*w#j  
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import org.rut.util.algorithm.SortUtil; N|,6<|  
/** ?5%|YsJP_  
* @author treeroot ?]fd g;?@  
* @since 2006-2-2 NC*h7  
* @version 1.0 7DU"QeLeb  
*/ +M+ht  
public class InsertSort implements SortUtil.Sort{ {I!sXj  
%C]K`=vI-  
/* (non-Javadoc) HqW|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TB]B l.  
*/ f3 lKdXnP  
public void sort(int[] data) { !!=%ty  
int temp; b@OL !?JP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t} E 1NXW  
} }ug|&25D  
} vG'JMzAm  
} #L-3eW=f  
OBF2?[V~  
} mCtuR*z_  
lO-:[@  
冒泡排序: !s;+6Sy  
lE+v@Kb:  
package org.rut.util.algorithm.support; P`'Nv  
T4`.rnzyRb  
import org.rut.util.algorithm.SortUtil; Go}C{(4T  
"WTnC0<  
/** &~+lXNXF  
* @author treeroot S6 F28 d[j  
* @since 2006-2-2 5$Yt@8;  
* @version 1.0 g?ID}E ~<  
*/ ) MFa~/x  
public class BubbleSort implements SortUtil.Sort{ |IqQ%;H  
`z$<1Q T  
/* (non-Javadoc) +Io[o6*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8|A*N< h  
*/ (( 0%>HJ{~  
public void sort(int[] data) { 3&!X8Lhv  
int temp; Qo{Ez^q@J  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3 tMFJ ;*`  
if(data[j] SortUtil.swap(data,j,j-1); >3 Q%Yn  
} zE +)oQ,  
} RsS?ibozl  
} 0+b1R}!2  
} IZczHHEL`b  
Exox&T  
} `Td0R!  
\?-`?QPux  
选择排序: ~xqRCf{8  
YLSp$d4y  
package org.rut.util.algorithm.support; mT;1KE{J{  
/#M|)V*wn  
import org.rut.util.algorithm.SortUtil; 8V%(SV  
PuAcsYQhN  
/** g4<w6eB  
* @author treeroot QfJ?'*  
* @since 2006-2-2 3k;*xjv6@  
* @version 1.0 _"%ef"oPh  
*/ [^B04x@  
public class SelectionSort implements SortUtil.Sort { ~qm<~T_0  
eLcP.;Z  
/* 4A:@+n%3m  
* (non-Javadoc) r#wMd9])  
* FA ?xp1E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r*<)QP^B~  
*/ ]?tsYXU j  
public void sort(int[] data) { <l(6$~(-u  
int temp; RuDn1h#u{  
for (int i = 0; i < data.length; i++) { .WA(X5  
int lowIndex = i; KFBo1^9N  
for (int j = data.length - 1; j > i; j--) { zlIXia5  
if (data[j] < data[lowIndex]) { dL'hC#!h  
lowIndex = j; VL"!.^'c  
} pb_+_(/c  
} TOV531   
SortUtil.swap(data,i,lowIndex); {~ ZSqd  
} ,JyE7h2%i  
} Rm 1obP  
%iY-}uhO  
} Yw<K!'C  
pc<")9U%/  
Shell排序: WK]SHiHD  
>I Aw Nr  
package org.rut.util.algorithm.support; l2KR=& SX/  
\"c;MK{  
import org.rut.util.algorithm.SortUtil; Asicf{HaX  
:BG/]7>|V  
/** 9VdVom|e  
* @author treeroot ma>{((N  
* @since 2006-2-2 a? K=  
* @version 1.0 )s(J8J[b*L  
*/ )Ac+5bs  
public class ShellSort implements SortUtil.Sort{ vr2tIKvpn  
6,)!\1k  
/* (non-Javadoc) y% =nhV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nY"9"R\.=  
*/ @47MJzC  
public void sort(int[] data) { w}^z1n  
for(int i=data.length/2;i>2;i/=2){ n.p6+^ES  
for(int j=0;j insertSort(data,j,i); ]kx)/n-K  
} EAp6IhW{  
} LJDX6]4n  
insertSort(data,0,1); Gd1%6}<~  
} g nJe!E  
)h&s.k  
/** o&)O&bNJ  
* @param data R:kNAtK  
* @param j &Al9%W  
* @param i %m1k^  
*/ 6?Ul)'  
private void insertSort(int[] data, int start, int inc) { <_-&{Pv  
int temp; fg"@qE-;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =XsdR?C  
} |rkj$s,  
} fRC(Yyx  
} YG$2ySkDhE  
Ffk$8"   
} \]=qGMwFs  
t QkEJ pj  
快速排序: o-2FGM`*VB  
Fv=7~6~  
package org.rut.util.algorithm.support; @@K@;Jox  
L {(\k$>'  
import org.rut.util.algorithm.SortUtil; XbdoTriE  
Yf >SV #  
/** ]C^D5(t/cd  
* @author treeroot VQF!|*#  
* @since 2006-2-2 "ut:\%39.  
* @version 1.0 Va,M9)F  
*/ 0o2o]{rM{2  
public class QuickSort implements SortUtil.Sort{ vUl5%r2O4  
Z\6&5r=  
/* (non-Javadoc) R[ p. )F7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &WAO.*:y  
*/ ]^MOFzSz~  
public void sort(int[] data) { !U.Xb6  
quickSort(data,0,data.length-1); jV)!9+H#  
} 5\1Z"?  
private void quickSort(int[] data,int i,int j){ 8$a4[s  
int pivotIndex=(i+j)/2; gv$6\1  
file://swap /'?Fz*b  
SortUtil.swap(data,pivotIndex,j); 1><\3+8  
4K`N3  
int k=partition(data,i-1,j,data[j]); ^p(t*%LM  
SortUtil.swap(data,k,j); 6dQa|ACX_  
if((k-i)>1) quickSort(data,i,k-1); qR0V\OtgY~  
if((j-k)>1) quickSort(data,k+1,j); rhY>aj  
(UmoG  
} Zy^mSI4i  
/** |VM c,_D  
* @param data H pXMPHd  
* @param i o<P@:}K  
* @param j b3}928!D-@  
* @return 3;=nQ{0b  
*/ X.<_TBos|  
private int partition(int[] data, int l, int r,int pivot) { (;YO]U4  
do{ -e7|DXj  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |gEA.} pY  
SortUtil.swap(data,l,r); I7b(fc-r  
} _l]`Og@Y  
while(l SortUtil.swap(data,l,r); {H s" "/sb  
return l; BX$t |t;!m  
} .CFaBwj  
"6rZn_H/|  
} U I|L;5  
G3&ES3L  
改进后的快速排序: <b"ynoM.A  
TuY{c%qQ:  
package org.rut.util.algorithm.support; hkSpG{;7  
ElAJR4'{*i  
import org.rut.util.algorithm.SortUtil; U~Aw=h5SD  
o+{}O_r  
/** J'^s5hxn+0  
* @author treeroot Ga~N7  
* @since 2006-2-2 #EtS9D'd+  
* @version 1.0 pWH8ex+  
*/ $+Ke$fq.>  
public class ImprovedQuickSort implements SortUtil.Sort { {n%-^9b1{&  
d}tn/Eu?B  
private static int MAX_STACK_SIZE=4096; ^T"9ZBkb  
private static int THRESHOLD=10; I2("p.+R  
/* (non-Javadoc) @eMDRbgq;[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (u85$_C  
*/ -yfyd$5j  
public void sort(int[] data) { W ]5kM~Q@  
int[] stack=new int[MAX_STACK_SIZE]; Q_/{TE/sO5  
D2|-\vJ>  
int top=-1; *{tn/ro6a  
int pivot; jo=XxA  
int pivotIndex,l,r; 4?M= ?K0  
gwQL9 UYx  
stack[++top]=0; >#dNXH]9  
stack[++top]=data.length-1; N'Va&"&73>  
aAO[Y"-:,Y  
while(top>0){ |Z6rP-  
int j=stack[top--]; x(3E#7>1  
int i=stack[top--]; `ea;qWy  
CU6rw+Vax  
pivotIndex=(i+j)/2; /a17B  
pivot=data[pivotIndex]; <Sm -Z,|  
wM(!9Ws3  
SortUtil.swap(data,pivotIndex,j); a}`4BMi3  
?yddr`?W  
file://partition ih2H~c>O  
l=i-1; h+zJ"\  
r=j; k]Y+C@g  
do{ h3a HCr E  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GB\.msls  
SortUtil.swap(data,l,r); e`4OlM]  
} `j[)iok  
while(l SortUtil.swap(data,l,r); Zp@p9][C  
SortUtil.swap(data,l,j); fS-#dJC";`  
dTyTj|"x{  
if((l-i)>THRESHOLD){ -`]B4Nt6  
stack[++top]=i; f'Wc_ L)  
stack[++top]=l-1; wke$  
} )H S|pS:  
if((j-l)>THRESHOLD){ C5i]n? )S  
stack[++top]=l+1; ~zRUJ2hD!  
stack[++top]=j; ^w^cYM,  
} ,f$A5RN  
=w".B[r  
} "My \&0-  
file://new InsertSort().sort(data); M^r1b1tR  
insertSort(data); 8_U*_I7(  
} T'\ lntN  
/** VyCBJK  
* @param data P_hwa1~d  
*/ ]5x N^7_!j  
private void insertSort(int[] data) { 4xT(Uj  
int temp; >T.U\,om7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mY(~94{d  
} 8iK>bp  
} yXc/Nl%  
} &kXf)xc<~  
3?Bq((  
} -[`,MZf   
U;;vNzcn  
归并排序: 0u QqPF t  
t=iy40_T  
package org.rut.util.algorithm.support; 2<fG= I8  
/V46:`V  
import org.rut.util.algorithm.SortUtil; _R]la&^2F\  
q<r{ps  
/** u` `FD  
* @author treeroot h<6@&yzp  
* @since 2006-2-2 uV52ko,  
* @version 1.0 <2diO=  
*/ rh${pHl  
public class MergeSort implements SortUtil.Sort{ +aEE(u6%E@  
xO'1|b^&  
/* (non-Javadoc) KxGK`'E'r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f`RcfYt  
*/ _yJd@  
public void sort(int[] data) { 5=., a5  
int[] temp=new int[data.length]; p/cVQ  
mergeSort(data,temp,0,data.length-1); cDxjD5E  
} lk%rE  
qdL;Ii<Y0  
private void mergeSort(int[] data,int[] temp,int l,int r){ . ?[2,4F;  
int mid=(l+r)/2; 9$)TAI&P  
if(l==r) return ; xdXt  
mergeSort(data,temp,l,mid); ?X]7jH<iw;  
mergeSort(data,temp,mid+1,r); :?U1^!$$1  
for(int i=l;i<=r;i++){ hoO8s#0ED  
temp=data; 6S2D\Bt,_  
} +g/y)]AP  
int i1=l; A>xFNem  
int i2=mid+1; Fj7cI +  
for(int cur=l;cur<=r;cur++){ 'X<R)E  
if(i1==mid+1) {O]Cj~}  
data[cur]=temp[i2++]; Z[FSy-;"  
else if(i2>r) m mu{K$9}I  
data[cur]=temp[i1++]; &xj?MgdNL  
else if(temp[i1] data[cur]=temp[i1++]; -SlLX\>p  
else <nvz*s  
data[cur]=temp[i2++]; %_(e{Mf)  
} n* 9)Y~  
} R}#?A%,*  
WDP$w( M  
} GW]Ygf1t  
tOn/r@Fd^E  
改进后的归并排序: K!).QB'  
qYl%v  
package org.rut.util.algorithm.support; f-k%P$"X&  
?N~rms e  
import org.rut.util.algorithm.SortUtil; @v2_gjRe  
[as\>@o  
/** GASDkVoij  
* @author treeroot cE$<6&0  
* @since 2006-2-2 \uc]+nV!o  
* @version 1.0 V) a<)  
*/ o 3#qp>R  
public class ImprovedMergeSort implements SortUtil.Sort { tVQq,_9C  
| KtI:n4d  
private static final int THRESHOLD = 10; W_.WMbT  
.>#X*u  
/* g'cLc5\  
* (non-Javadoc) ba-4V8w  
* \!LIqqX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mc,3j~i  
*/ }TQa<;Q  
public void sort(int[] data) { 9]C%2!Ur,  
int[] temp=new int[data.length]; AjVX  
mergeSort(data,temp,0,data.length-1); iX%9$Bft<  
} CKI.\o  
.jUM'; l  
private void mergeSort(int[] data, int[] temp, int l, int r) { w)N~u%  
int i, j, k; bog3=Ig-  
int mid = (l + r) / 2; ]*?lgwE  
if (l == r) NC%96gfD  
return; mq}V @H5  
if ((mid - l) >= THRESHOLD) s Poh\n  
mergeSort(data, temp, l, mid); sZx`u+  
else EDT9O  
insertSort(data, l, mid - l + 1); @r&*Qsf|   
if ((r - mid) > THRESHOLD) 40%fOu,u`  
mergeSort(data, temp, mid + 1, r); dBw7l}  
else 6(=B`Z}a  
insertSort(data, mid + 1, r - mid); Al1_\vx7  
\sz*M B  
for (i = l; i <= mid; i++) { Yt[LIn-v:  
temp = data; qv^P  
} 5^D094J|^  
for (j = 1; j <= r - mid; j++) { dGglt Y  
temp[r - j + 1] = data[j + mid]; EHy15RL  
} kXV;J$1  
int a = temp[l]; IR:GoD+  
int b = temp[r]; [tT_ z<e`  
for (i = l, j = r, k = l; k <= r; k++) { oam$9 q  
if (a < b) { C$p012D1  
data[k] = temp[i++]; Mw3$QRM  
a = temp; 5vFM0  
} else { $PG(>1e  
data[k] = temp[j--]; A9lw^.  
b = temp[j]; |8pSMgN  
} #SKC>M Gz  
} _Pno9|  
} T+^Sa J  
E[WU  
/** uH?dy55 Y  
* @param data ?wu@+  
* @param l tm/=Oc1p  
* @param i ~/X8Hy!-  
*/ Ni8%K6]z  
private void insertSort(int[] data, int start, int len) { O|S,="h"}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,,H;2xYf  
} _CPj] m{  
} ber&!9  
} 118lb]  
} ZJF"Yo  
2 431v@  
堆排序: 1d~d1Rd  
b}fC' h  
package org.rut.util.algorithm.support; =/}Rnl+c  
P4HoKoj2`  
import org.rut.util.algorithm.SortUtil; tmOy"mq67  
<o9AjASv\,  
/** }]H7uC!t   
* @author treeroot &',#j]I  
* @since 2006-2-2 3b\s;!  
* @version 1.0  Cu5_OJ  
*/ e,{k!BXU#'  
public class HeapSort implements SortUtil.Sort{ w>8HS+  
wm^1Fn--  
/* (non-Javadoc) =dH=3iCG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V,=5}qozQ  
*/ n-2!<`UFX  
public void sort(int[] data) { tvf5b8(Y-  
MaxHeap h=new MaxHeap(); kkfBVmuW  
h.init(data); B8eZ}9X  
for(int i=0;i h.remove(); rHjDf[5+  
System.arraycopy(h.queue,1,data,0,data.length); n_4.`vs  
} M*bsA/Z  
Qy"%%keV'T  
private static class MaxHeap{ :-#7j} R&  
y\j[\UZKO  
void init(int[] data){ 5Pq6X  
this.queue=new int[data.length+1]; )b (+=  
for(int i=0;i queue[++size]=data; #'O9Hn({  
fixUp(size); )Nx*T9!Q  
} (1q(6!  
} 0 LXu!iix  
s0]ZE\`H>  
private int size=0; wl%ysM| x  
O7_y QQAA  
private int[] queue; "=K3sk  
w)* H&8h@  
public int get() { sVFX(yx0  
return queue[1]; fd #QCs  
} F WU >WHX  
@`+\v mfD  
public void remove() { J zFR9DEt  
SortUtil.swap(queue,1,size--); _VjaTw8iM  
fixDown(1); Nt_sV7zzb  
} `n-/~7  
file://fixdown olr#3te  
private void fixDown(int k) { x^_c4,i)  
int j; = 03G~7B>  
while ((j = k << 1) <= size) { h5T~dGRlR  
if (j < size %26amp;%26amp; queue[j] j++; j~S=kYrGM  
if (queue[k]>queue[j]) file://不用交换 >);M\,1\I  
break; *2N0r2t&  
SortUtil.swap(queue,j,k);  \v+c.  
k = j; -IVWkA)7  
} }@jJv||  
} /=l!F'  
private void fixUp(int k) { %-$ :/ N  
while (k > 1) { ZU0*iA  
int j = k >> 1; h+!R)q8M  
if (queue[j]>queue[k]) 0FH.=   
break; %Jd!x{a`>A  
SortUtil.swap(queue,j,k); gBWr)R  
k = j; W5Jy"]^I  
} ^V9|uHOJoq  
} Gg GjBt  
9ghUiBPiL:  
} a(|0 '^  
~*\ *8U@7  
} pbqk  
ToKG;Ff4b  
SortUtil: })kx#_o]'d  
+_vf=d  
package org.rut.util.algorithm; J4 j:nd  
{*g{9`   
import org.rut.util.algorithm.support.BubbleSort; yKK9b  
import org.rut.util.algorithm.support.HeapSort; xL<c/B`-:  
import org.rut.util.algorithm.support.ImprovedMergeSort; k#~oagW_Gw  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;gu4~LQw  
import org.rut.util.algorithm.support.InsertSort; FqGMHM\J  
import org.rut.util.algorithm.support.MergeSort; /pU`-  
import org.rut.util.algorithm.support.QuickSort; khT[  
import org.rut.util.algorithm.support.SelectionSort; ~,)D n  
import org.rut.util.algorithm.support.ShellSort; s:_j,/H0A}  
iqB%sIP  
/** Y}q~ Km  
* @author treeroot +>2.O2)%q  
* @since 2006-2-2 r~7}w4U  
* @version 1.0 mea} 9]c  
*/ 5A 5t  
public class SortUtil { :i {; 81V  
public final static int INSERT = 1; v$JW7CKA  
public final static int BUBBLE = 2; |%#NA!e4wA  
public final static int SELECTION = 3; Tj!\SbnA[  
public final static int SHELL = 4; /[/{m]  
public final static int QUICK = 5; rK}sQ4z=  
public final static int IMPROVED_QUICK = 6; u#y)+A2&!  
public final static int MERGE = 7; Z!fbc#L6  
public final static int IMPROVED_MERGE = 8; kz("LI]  
public final static int HEAP = 9; Fo%`X[?  
m!^$_d\%~  
public static void sort(int[] data) { _(~ E8g  
sort(data, IMPROVED_QUICK); & @_PY  
} -k2|`t _  
private static String[] name={ |)0Ta 9~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Rg46V-"d,@  
}; XN?my@_HpM  
BNb_i H  
private static Sort[] impl=new Sort[]{ FjiIB1 T  
new InsertSort(), 7i02M~*uS  
new BubbleSort(), g3Hi5[-H  
new SelectionSort(), &m9= q|;m  
new ShellSort(), ''!j:49  
new QuickSort(), 4f ~q$Sf]<  
new ImprovedQuickSort(), saQo]6#  
new MergeSort(), !Z{7X ^  
new ImprovedMergeSort(), mF4OLG3L0  
new HeapSort() <pKOFN%m  
}; q;f L@L@-  
kJNg>SN*@#  
public static String toString(int algorithm){ >f-RzQ k  
return name[algorithm-1]; )#hR}|  
} 5 I#-h<SG  
x5;D'Y t"|  
public static void sort(int[] data, int algorithm) { @7Ln1v  
impl[algorithm-1].sort(data); .A6pPRy e  
} H0t#J  
 Yy`A0v  
public static interface Sort { yiH;fK+x  
public void sort(int[] data); U%#Vz-r  
} J_|%8N{[x  
*&h]PhY  
public static void swap(int[] data, int i, int j) { <Zfh5AM  
int temp = data; loBW#>  
data = data[j]; >lek@euqw  
data[j] = temp; BV/ ^S.~  
} gOE ?  
} < %<nh`D  
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