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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。 $S=~YzO  
插入排序: jWK@NXMH  
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package org.rut.util.algorithm.support; + fd@K  
K%(XgXb(</  
import org.rut.util.algorithm.SortUtil; GKyG #Fl  
/** T~o{woq}g  
* @author treeroot qQxA@kdd  
* @since 2006-2-2 4d e]?#=  
* @version 1.0 `kNi*I^  
*/ "rx^M*"  
public class InsertSort implements SortUtil.Sort{ FJf~vAQ  
phgexAq  
/* (non-Javadoc) 6vgBqn[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8@ %mnyQ  
*/ N=T.l*8  
public void sort(int[] data) { EY)Gi`lK  
int temp; a%T -Z.rd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EzIs@}  
} 2T@L{ql  
} 1O7]3&L@  
} J}(6>iuQY?  
;;?vgrz  
} ```d:f  
C1T=O  
冒泡排序: a4T~\\,dZ>  
?AnjD8i  
package org.rut.util.algorithm.support; BeI;#m0  
N~):c2Kp<9  
import org.rut.util.algorithm.SortUtil; OpK. Lsd0y  
8wII{FHX  
/** +:>JZ$  
* @author treeroot kYxl1n v  
* @since 2006-2-2 rps(Jos_~  
* @version 1.0 a(@p0YpKT  
*/ =9pw uH  
public class BubbleSort implements SortUtil.Sort{ ;NH~9# t:  
@n7t?9Bx  
/* (non-Javadoc) L\}Pzxn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]am~aJ|L  
*/ 6X7s 4  
public void sort(int[] data) { Xb]=:x(  
int temp; I(]BMMj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T~%H%O(F  
if(data[j] SortUtil.swap(data,j,j-1); IX<r5!  
} ~^I\crx,U%  
} 3ar=1_Ar  
} K DYYB6|  
} {)V?R  
4l&"]9D  
} k7^R,.c@  
'ySljo*It  
选择排序: ~n[b^b  
?wd|G4.Vo  
package org.rut.util.algorithm.support; JF M"ii{8  
>[ug zJ  
import org.rut.util.algorithm.SortUtil; 2wx!Lpr<i_  
P</s)"@  
/** e(yQKwVD  
* @author treeroot 1$$37?FE  
* @since 2006-2-2 {ITv&5?>  
* @version 1.0 W.A1m4l58R  
*/ t`"^7YFS>  
public class SelectionSort implements SortUtil.Sort { iOT)0@f'  
[J0*+C9P*  
/* V43nws "4  
* (non-Javadoc) fyI_  
* D@8jGcz62  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b'velj3A  
*/ |9>*$Fe"  
public void sort(int[] data) { ajn-KG!A  
int temp; c 9rVgLqn!  
for (int i = 0; i < data.length; i++) { fO].e"}  
int lowIndex = i; 24|  
for (int j = data.length - 1; j > i; j--) { S|"Fgoj r  
if (data[j] < data[lowIndex]) { fNkuX-om  
lowIndex = j; C"6 Amnj  
} L@w0N)P<!{  
} )`w=qCn1Y  
SortUtil.swap(data,i,lowIndex); Zta$R,[9h  
} I[#U`9Dt  
} 9Z&?R++?  
/ZHO>LNN|  
} ||uZ bP@  
h4f ~5- Y  
Shell排序: ZP"yq6!i  
]Ap`   
package org.rut.util.algorithm.support; z@zD .  
hM~eJv  
import org.rut.util.algorithm.SortUtil; ><[| G9  
U.: sK*  
/** Aj,]n>{  
* @author treeroot ],n%Xp  
* @since 2006-2-2 i 'qMi~{  
* @version 1.0 8QV t, 'I  
*/ < CDA"  
public class ShellSort implements SortUtil.Sort{ z^r |3;  
kLJlS,nh\r  
/* (non-Javadoc) ;4 ,'y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tWm>j  
*/ huz86CO  
public void sort(int[] data) { T?>E{1pS  
for(int i=data.length/2;i>2;i/=2){ PdT83vOCE  
for(int j=0;j insertSort(data,j,i); UxyY<H~Wx  
} dY8(nQG  
} t\8&*(&3F  
insertSort(data,0,1); C1d 04Q  
} 'Q5&5UrBr  
sGSsUO:@j;  
/** ,'~ #Ch  
* @param data 8Jr1_a  
* @param j U R}kB&t  
* @param i K"L_`.&Q  
*/ c15r':.5  
private void insertSort(int[] data, int start, int inc) { "3SWO3-x  
int temp; AM'gnP>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Rp0|zP,5  
} +P|2m"UA  
} ~ FGe ~  
} D}w<84qX  
n12UBvc}%  
} W2`.RF^  
7,*%[#-HE  
快速排序: `)$`-Pw*  
B| tzF0;c  
package org.rut.util.algorithm.support; SET-8f  
V$(/0mQV(  
import org.rut.util.algorithm.SortUtil; ,;%yf?  
~AQ>g#|%  
/** lV\lj@  
* @author treeroot &'s^nn]  
* @since 2006-2-2 8V-,Xig;`  
* @version 1.0 ACb/ITu  
*/ s"i~6})K<$  
public class QuickSort implements SortUtil.Sort{ ,t1vb3  
nd:E9:  
/* (non-Javadoc) Vv8_\^g]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /PXioiGcs  
*/ zie=2  
public void sort(int[] data) { < W*xshn  
quickSort(data,0,data.length-1); g`[`P@  
} yyP'Z~0  
private void quickSort(int[] data,int i,int j){ j$vK<SF  
int pivotIndex=(i+j)/2; \5~;MI.Sq  
file://swap $o.Kn9\  
SortUtil.swap(data,pivotIndex,j); M;KA]fmc  
o2aM#Q  
int k=partition(data,i-1,j,data[j]); 94Ud@F9d5  
SortUtil.swap(data,k,j); `XW*kxpm  
if((k-i)>1) quickSort(data,i,k-1); KXf<$\+zO  
if((j-k)>1) quickSort(data,k+1,j); ^O)ve^P  
mRwT_(;t  
} ^P?vkO"pB?  
/** WS:5MI,OL  
* @param data -f?Ah  
* @param i ^,TTwLy- t  
* @param j b{M}5~e=B  
* @return <'+ %\  
*/ RPH1''*!  
private int partition(int[] data, int l, int r,int pivot) { B76 v}O:  
do{ vX;HC'%n  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .'1SZe7O  
SortUtil.swap(data,l,r); /ZW&0 E  
} , ECLqs%  
while(l SortUtil.swap(data,l,r); a }'->H  
return l; (e9fm|n!)|  
} +?[BU<X6u  
8:thWGLN  
} (PRBS\*G  
KzphNHd  
改进后的快速排序: ``u:lL  
DI1(`y  
package org.rut.util.algorithm.support; __I/F6{ 9V  
^:u?ye;  
import org.rut.util.algorithm.SortUtil; 3F+Jdr'  
BAV>o|-K  
/** 0y~<%`~  
* @author treeroot ,O]l~)sr|  
* @since 2006-2-2 4Po)xo  
* @version 1.0 XV>&F{  
*/ inAAgW#s}  
public class ImprovedQuickSort implements SortUtil.Sort { =P`~t<ajB  
\:v$ZEDJ>  
private static int MAX_STACK_SIZE=4096; 7NL% $Vf  
private static int THRESHOLD=10; %}&(h/= e  
/* (non-Javadoc) S&(^<gwl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ^$-Ye]<  
*/ s+Q;pRZW{  
public void sort(int[] data) { +}@ 8p[`)  
int[] stack=new int[MAX_STACK_SIZE]; !MVj=(  
Bs8[+Ft5  
int top=-1; g%a|q~)  
int pivot; |0.Xl+7  
int pivotIndex,l,r; 2(M6(xH>  
A}5fCx.{  
stack[++top]=0; "e6|"w@8  
stack[++top]=data.length-1; C$9z  
fD4ICO@  
while(top>0){ syPWs57pH  
int j=stack[top--]; .lNs4e  
int i=stack[top--]; ! bU\zH  
`/nM[  
pivotIndex=(i+j)/2; Y<f_`h^r  
pivot=data[pivotIndex]; *5V Xyt2  
%gd(wzco  
SortUtil.swap(data,pivotIndex,j); > cN~U3  
VDGCWg6z  
file://partition "i&"* ~  
l=i-1; u~1o(Zn =  
r=j; P0Z! ?`e=M  
do{ Zy0aJN>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _&#S@aGw  
SortUtil.swap(data,l,r); |Au]1}  
} L}sx<=8.m  
while(l SortUtil.swap(data,l,r); zj|WZ=1*Wp  
SortUtil.swap(data,l,j); MYLsHIPC  
'+Xlw  
if((l-i)>THRESHOLD){ Bs ;|D  
stack[++top]=i; PdeBDFWD  
stack[++top]=l-1; Dyg?F )6  
} ;V5yXNQ   
if((j-l)>THRESHOLD){ ~1kXUWq3  
stack[++top]=l+1; atF?OP|{,w  
stack[++top]=j; v~|?3/{Q  
} (%_n!ip^  
D@oCP =m<  
} {ZsdLF#  
file://new InsertSort().sort(data); 0?0Jz  
insertSort(data); %rkk>m  
} `ln1$  
/** %Ym^{N  
* @param data '%saL>0  
*/ 9 QC.TG@  
private void insertSort(int[] data) { -&2B@]]  
int temp; sOU_j:A80;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uz3 0_aH  
} sEc;!L  
} %~xGkk"I  
} kAA>FI6  
++-{]wB3=.  
}  #^#HuDH  
^dm!)4W  
归并排序: 1|r,dE2k9  
sTRJ:fR  
package org.rut.util.algorithm.support; O) atNE   
3AcD,,M>>  
import org.rut.util.algorithm.SortUtil; eqAW+Ptx  
zDTv\3rZ4X  
/** xdvh-%A4  
* @author treeroot &>g'$a<[  
* @since 2006-2-2 :4gLjzL  
* @version 1.0 bM,1f/^  
*/ 2";SJF'5\  
public class MergeSort implements SortUtil.Sort{ Cq)IayD@  
Ro(Zmk\t  
/* (non-Javadoc) jE2}p-2Q0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kgdT7  
*/ R(Kk{c:-@  
public void sort(int[] data) { IiBD?}  
int[] temp=new int[data.length]; q`NXJf=sc  
mergeSort(data,temp,0,data.length-1); {'En\e  
} Q]/Uq~m C  
aGZi9O7G}  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3r+.N  
int mid=(l+r)/2; nC1zzFFJ  
if(l==r) return ; Y?J"wdWJNB  
mergeSort(data,temp,l,mid); /4\wn?f  
mergeSort(data,temp,mid+1,r); 7R4z}2F2  
for(int i=l;i<=r;i++){ 7nq3S  
temp=data; <S75($  
} ikD1N  
int i1=l; [BBEEI=|r  
int i2=mid+1; T:]L/wCj  
for(int cur=l;cur<=r;cur++){ BQH}6ueZ  
if(i1==mid+1) F[ ajOb8  
data[cur]=temp[i2++]; I pzJ#  
else if(i2>r) b89a)k>^g  
data[cur]=temp[i1++]; $j}OB6^I  
else if(temp[i1] data[cur]=temp[i1++]; ?S$i?\Qh  
else sZ,Y60s8a  
data[cur]=temp[i2++]; Z/;Xl~  
} XW{>-PBg:  
} 0& >H^  
SP*fv`  
} v3d&*I  
Y6i _!z[V[  
改进后的归并排序: G7!W{;@I  
m %;D  
package org.rut.util.algorithm.support; gKLyL]kAGz  
&8.NT~"Gg  
import org.rut.util.algorithm.SortUtil; 05yZad*  
)SryDRT  
/** xv{O^Ie+S  
* @author treeroot !-`Cp3gqHr  
* @since 2006-2-2 *]hBGr#6  
* @version 1.0 7 >iU1zy  
*/ g V5zSudW  
public class ImprovedMergeSort implements SortUtil.Sort { E%oY7.~-  
 j~j jX  
private static final int THRESHOLD = 10; -=s(l.?Hm5  
e:H26SW  
/* tCxF~L@  
* (non-Javadoc) Z6\+  
* m,C1J%{^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lif&@o f  
*/ F  
public void sort(int[] data) { WE]e m >  
int[] temp=new int[data.length]; BH]Ynu&o  
mergeSort(data,temp,0,data.length-1); akw,P$i  
} 3 rLTF\  
rc&%m  
private void mergeSort(int[] data, int[] temp, int l, int r) { _@S`5;4x  
int i, j, k; ;%tF58&  
int mid = (l + r) / 2; ljl^ GFo  
if (l == r) `.s({/|[  
return; t!Sq A(-V  
if ((mid - l) >= THRESHOLD) V%$/#sza  
mergeSort(data, temp, l, mid); -*5Rnx|Y{  
else .920{G?l5  
insertSort(data, l, mid - l + 1); 8-<:i  
if ((r - mid) > THRESHOLD) 0TpK#OlI|c  
mergeSort(data, temp, mid + 1, r); qC F5~;7  
else `u>4\sv  
insertSort(data, mid + 1, r - mid); {*{Ox[Nh{  
Eu"_MgD  
for (i = l; i <= mid; i++) { gbVdOm  
temp = data; L "sO+4w  
} .bBdQpF-  
for (j = 1; j <= r - mid; j++) { |rmg#;/D  
temp[r - j + 1] = data[j + mid]; {(r6e  
} L(&&26Y  
int a = temp[l]; quY:pqG38q  
int b = temp[r]; ca+5=+X7  
for (i = l, j = r, k = l; k <= r; k++) { eX@L3BKp  
if (a < b) { F:x [  
data[k] = temp[i++]; n; {76Q  
a = temp; ;a:[8Yi  
} else { LL:_L<  
data[k] = temp[j--]; %*BlWk!Q  
b = temp[j]; 4apL4E"r  
} vpmj||\-  
} .\>v0Du  
} MEB it  
cnTaJ/o  
/** vWAL^?HUP  
* @param data I`NjqyTW  
* @param l #g6.Glz3  
* @param i U&O: _>~  
*/ e7wSOs  
private void insertSort(int[] data, int start, int len) { P.gb 1$7<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]U"94S U:)  
} 8OgLn?"P  
} H;RwO@v  
} N7e"@Ic  
} Omd .9  
]+X@ 7  
堆排序: t.mVO]dsj  
-GxaV #{  
package org.rut.util.algorithm.support; B}^w_C2  
Hh+ 2mkg  
import org.rut.util.algorithm.SortUtil; eM8}X[  
'- zD  
/** F$)[kP,wtO  
* @author treeroot 82l~G;.n3  
* @since 2006-2-2 Bve.C  
* @version 1.0 HTG%t/S  
*/ ~3<> 3p  
public class HeapSort implements SortUtil.Sort{ wmTb97o  
B_.%i+ZZ  
/* (non-Javadoc) #\=FO>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a\r\PBi  
*/ &Xf}8^T<V  
public void sort(int[] data) { 4<BjC[@~Z{  
MaxHeap h=new MaxHeap(); E>K!Vrh-L  
h.init(data); V:joFRH9  
for(int i=0;i h.remove(); {;2PL^i  
System.arraycopy(h.queue,1,data,0,data.length); 3W N@J6?  
} AIZ]jq  
.[_L=_.  
private static class MaxHeap{ Hj}K{20  
5 sX+~Q  
void init(int[] data){ X(NLtO w  
this.queue=new int[data.length+1]; 6Yln, rC  
for(int i=0;i queue[++size]=data; ?` ?)QE8  
fixUp(size); nR*ryv  
} m;,N)<~  
} mHRiugb!  
Z.Lc>7o  
private int size=0; 7<*yS310  
:=Nz }mUV  
private int[] queue; ,y#Kv|R  
o2F)%TDY  
public int get() { NCDvo bYJ  
return queue[1]; {z{bY\  
} y gz6C  
A*\.NTM  
public void remove() { z:wutqru  
SortUtil.swap(queue,1,size--); :;9F>?VN>0  
fixDown(1); x<ZJb  
} -Fe?R*-g  
file://fixdown #pnI\  
private void fixDown(int k) { )P sY($ &  
int j; NPp;78O0[  
while ((j = k << 1) <= size) { lN Yt`xp  
if (j < size %26amp;%26amp; queue[j] j++; @u6B;)'l  
if (queue[k]>queue[j]) file://不用交换 a!v1M2>  
break; t7aefV&_,  
SortUtil.swap(queue,j,k); HMNLa*CL'  
k = j; 2fL;-\!y(  
} H*PSR  
} eceP0x  
private void fixUp(int k) { fumm<:<CLO  
while (k > 1) { 50S&m+4d+  
int j = k >> 1; _z|65H  
if (queue[j]>queue[k]) C&(N I  
break; Tw-;7Ae  
SortUtil.swap(queue,j,k); ``hf=`We  
k = j; gtppv6<Mj4  
} D9H?:pmv?  
} asppRL||  
 "y}--  
} W:pIPDx1=!  
V@g'#= {r  
} )6Fok3u  
uxr #QA  
SortUtil: _ 9F9W{'  
a .k.n<  
package org.rut.util.algorithm; f*?]+rz  
iP7(tnlW$  
import org.rut.util.algorithm.support.BubbleSort; rX2.i7i,  
import org.rut.util.algorithm.support.HeapSort; (@fHl=! Za  
import org.rut.util.algorithm.support.ImprovedMergeSort; m;GCc8  
import org.rut.util.algorithm.support.ImprovedQuickSort; )"7iJb<E  
import org.rut.util.algorithm.support.InsertSort; AP 2_MV4W  
import org.rut.util.algorithm.support.MergeSort; Pd_U7&w,5  
import org.rut.util.algorithm.support.QuickSort; !Dn,^  
import org.rut.util.algorithm.support.SelectionSort; -lY6|79bF  
import org.rut.util.algorithm.support.ShellSort; 4O^xY 6m  
8;JWK3Gv  
/** '-Vt|O_Q  
* @author treeroot . 1Dg s=|  
* @since 2006-2-2 )vE~'W  
* @version 1.0 t.i 8 2Q  
*/ ;DfY#-  
public class SortUtil { _@ qjV~%Sy  
public final static int INSERT = 1; ;U+3w~  
public final static int BUBBLE = 2; pmyXLT  
public final static int SELECTION = 3; 2K/4Rf0;  
public final static int SHELL = 4; L [pBB  
public final static int QUICK = 5; 4V)kx[j  
public final static int IMPROVED_QUICK = 6; TNe l/   
public final static int MERGE = 7; KJ)k =mJ  
public final static int IMPROVED_MERGE = 8; ,is3&9  
public final static int HEAP = 9; rZ}:Z'`  
X^wt3<Kbf  
public static void sort(int[] data) { 2} /aFR  
sort(data, IMPROVED_QUICK); a%JuC2  
} f<d`B]$(  
private static String[] name={ s<<ooycBrQ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ];[}:f  
}; 3M[! N  
ZbW17@b  
private static Sort[] impl=new Sort[]{ Y!w`YYKP  
new InsertSort(), ; F"g$_D0  
new BubbleSort(), *&^Pj%DX  
new SelectionSort(), B" 1c  
new ShellSort(), Bq%Jh  
new QuickSort(), |4;Fd9q^m  
new ImprovedQuickSort(), ,~N/- 5  
new MergeSort(), IL#"~D?  
new ImprovedMergeSort(), wDal5GJp  
new HeapSort() l[0RgO*S  
}; k8&;lgO '  
HdUQCugxx:  
public static String toString(int algorithm){ |"8b_Cq{  
return name[algorithm-1]; X9W@&zQ  
} XpB_N{v9w  
5H<m$K4z  
public static void sort(int[] data, int algorithm) { 6 $4[gcL'  
impl[algorithm-1].sort(data); y}" O U  
} l*Gvf_UH  
M2,l7  
public static interface Sort { -A^_{4X  
public void sort(int[] data); %S960  
} t&C1Oo}=3  
_7Ju  
public static void swap(int[] data, int i, int j) { ] vHF~|/-  
int temp = data; > PRFWO  
data = data[j]; JE "x  
data[j] = temp; q$d>(vb q  
} AUG#_HE]k  
} c<:-T  
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