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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。 v)s; wD  
插入排序: 45U!\mG  
5Zy%Nam'gN  
package org.rut.util.algorithm.support; gvCQ![  
y$`@QRW  
import org.rut.util.algorithm.SortUtil; Y wu > k  
/** :`<ME/"YE  
* @author treeroot "[`/J?W  
* @since 2006-2-2 2!Sl!x+i\'  
* @version 1.0 Y"UB\_=  
*/ u=f}t=3  
public class InsertSort implements SortUtil.Sort{ D V=xqC6}  
nk.j7tu  
/* (non-Javadoc) FfpP<(4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eiJ~1H X)  
*/ {jOV8SVL  
public void sort(int[] data) { GFfZ TA  
int temp; 3fd?xhWbN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7;3;8Q FX  
} $9rQ w1#e  
} D]NJ ^.X  
} qj1Fj  
1dl(`=^X  
} aU?HIIA  
Jm[_X  
冒泡排序: :]uz0s`>  
 RI&V:1  
package org.rut.util.algorithm.support; 1g>>{ y  
++Fv )KY@  
import org.rut.util.algorithm.SortUtil; /y[zOT6  
, ePl>m:Z  
/** ? 5<x$YI  
* @author treeroot M+GtUE~"  
* @since 2006-2-2 F42?h:y8I  
* @version 1.0 QQ\\:]iM  
*/ k<QZ_*x}G  
public class BubbleSort implements SortUtil.Sort{ f?W"^6Df  
5KC Zg'h  
/* (non-Javadoc) *_H^]wNJG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $*c!9Etl4  
*/ @BoZZ  
public void sort(int[] data) { $VnPs!a  
int temp; qc"PTv0q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >?|c>HGX  
if(data[j] SortUtil.swap(data,j,j-1); {VT**o  
} "] [u  
} i<-a-Z+^  
} 4;V;8a\A  
} NEW0dF&)  
qx";G  
} L17{W4  
wOn*QO[  
选择排序: }dpE>  
h )h%y)1  
package org.rut.util.algorithm.support; 1BOv|xPjZ  
EFz Pt?l  
import org.rut.util.algorithm.SortUtil; FJ{6_=@D  
6ac_AsFK  
/** {ug*  
* @author treeroot -7(,*1Tk  
* @since 2006-2-2 d:JP935  
* @version 1.0 wj 15Og?  
*/ m_h$fT8 _  
public class SelectionSort implements SortUtil.Sort { Wiere0 2*  
}S 6h1X  
/* )*nZ6Cg'  
* (non-Javadoc) {-1N@*K  
* 'H-hp   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YYF.0G}  
*/ 0S&C[I o6  
public void sort(int[] data) { K96N{"{iI%  
int temp; g>;"Fymc'  
for (int i = 0; i < data.length; i++) { Mk8k,"RG&Z  
int lowIndex = i; 9\!=i  
for (int j = data.length - 1; j > i; j--) { Rh%C$d(  
if (data[j] < data[lowIndex]) { Sv t%*j  
lowIndex = j; Z.,pcnaQb  
} !dOpLUh l  
} C=x70Y/  
SortUtil.swap(data,i,lowIndex); k|3hs('y|  
} cQrXrij;!  
} l0=VE#rFl  
N fND@m{/  
} ', P_a,\  
x\aCZ  
Shell排序: =+w/t9I[  
&/8B (0<  
package org.rut.util.algorithm.support; qflOi8  
1^tM%2rP'  
import org.rut.util.algorithm.SortUtil; OXS.CFZM  
7[:?VXQ  
/** l._g[qa  
* @author treeroot =4 NKXP~C  
* @since 2006-2-2 $J=`fx  
* @version 1.0 {=6CL'_  
*/ Qq3>Xv <  
public class ShellSort implements SortUtil.Sort{ fU|4^p)  
9e;8"rJ?C  
/* (non-Javadoc) fE1VTGfd:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :;KQ]<  
*/ wQ?Z y;/S  
public void sort(int[] data) { 2Ws'3Jz  
for(int i=data.length/2;i>2;i/=2){ IAMtMO^L  
for(int j=0;j insertSort(data,j,i); H^<?h6T  
}  Y}e3:\  
} dpcU`$kt  
insertSort(data,0,1); \d-9Ndp nf  
} *Rgl(Ba  
/Nns3oE  
/** 7ea%mg\  
* @param data &(h@]F!  
* @param j L~*nI d  
* @param i T@mYHKu  
*/ Mo]aB:a  
private void insertSort(int[] data, int start, int inc) { >%A~ :  
int temp; y(X^wC  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?d_vD@+\  
} q@i.4>x  
} s:ojlmPb  
} YM#J_sy@J.  
]l^" A~va  
} zqxN/H]z  
?MOjtAG0_~  
快速排序: Lw`}o`D  
uTvf[%EHW  
package org.rut.util.algorithm.support; N`O0jH{  
>N"=10  
import org.rut.util.algorithm.SortUtil; )3^#CD  
}ISR +./+  
/** qRXHaQi@9  
* @author treeroot zz #IY'dwT  
* @since 2006-2-2 HG^~7oMf  
* @version 1.0 LBIEG_/m  
*/ 4iY <7l8  
public class QuickSort implements SortUtil.Sort{ Rp !Rzl<  
lL&p?MUp  
/* (non-Javadoc) <7o@7r'0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c*",AZ>U  
*/ c=<^pCa9t1  
public void sort(int[] data) { \6!s";=hQ  
quickSort(data,0,data.length-1); mh35S!I3I^  
} 5hfx2 O)  
private void quickSort(int[] data,int i,int j){ J9P\D!  
int pivotIndex=(i+j)/2; 4%7Oaf>9  
file://swap 8# IEE|1  
SortUtil.swap(data,pivotIndex,j); m5 l&  
@B9#Hrc  
int k=partition(data,i-1,j,data[j]); w:2yFC  
SortUtil.swap(data,k,j); ]W7&ZpF  
if((k-i)>1) quickSort(data,i,k-1); O@>{%u  
if((j-k)>1) quickSort(data,k+1,j); at(gem  
([]\7}+8  
} gB0Q0d3\G,  
/** M7ug < 8i  
* @param data [ZD`t,x(  
* @param i 6>b'g ~I  
* @param j uzL|yxt  
* @return G$s=P  
*/ g_?bWm4br  
private int partition(int[] data, int l, int r,int pivot) { ,irc=0M(  
do{ lM.k *`$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Kir|in)r0  
SortUtil.swap(data,l,r); :@S=0|:j  
} 02C;  
while(l SortUtil.swap(data,l,r); OT#foP   
return l; aZ}z/.b]  
} (, $Lp0mB7  
n6{nx[%7N7  
} BR tT 7  
;0}C2Cz'  
改进后的快速排序: vqo ~?9z[e  
:-~x~ah-  
package org.rut.util.algorithm.support; KJ_L>$ ]*  
9g7Ok9dF  
import org.rut.util.algorithm.SortUtil; 8KWhXF  
>Sm#-4B-  
/** Ca0t}`<S  
* @author treeroot i8.OM*[f  
* @since 2006-2-2 $}P>_bq  
* @version 1.0 x5,|kJ9S  
*/ cBU@853  
public class ImprovedQuickSort implements SortUtil.Sort { <<6gsKP  
L>!MEMqm  
private static int MAX_STACK_SIZE=4096; 1wW4bg 5  
private static int THRESHOLD=10; X:W}S/  
/* (non-Javadoc) r]&&*:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <n0j'P>1  
*/ BXr._y, cr  
public void sort(int[] data) { s "l ^v5  
int[] stack=new int[MAX_STACK_SIZE]; F>at^6^  
]CgZt' h{  
int top=-1; jyC>~}?  
int pivot; hcQv!!Q"k$  
int pivotIndex,l,r; |2&|#K4k^  
S.^x)5/,,T  
stack[++top]=0; uU1q?|4  
stack[++top]=data.length-1; BF U#FE)s  
2Oy-jM  
while(top>0){ Rr>""  
int j=stack[top--]; N~B'gJJDx  
int i=stack[top--]; N}q*(r!q<  
r8!M8Sc  
pivotIndex=(i+j)/2; /P*ph0S-  
pivot=data[pivotIndex]; #M92=IH  
qb5IpI{U  
SortUtil.swap(data,pivotIndex,j); #e6x_o|  
>u=nGeO  
file://partition k_1o j[O  
l=i-1; VqeW;8&*iv  
r=j; cQh=Mri]  
do{ s$VLVT*6  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /(bn+l}W  
SortUtil.swap(data,l,r); qGie~S ##  
} y |Tv;v1L  
while(l SortUtil.swap(data,l,r); IE&G7\>(yO  
SortUtil.swap(data,l,j); [q!)Y:|u_>  
IF3V5Q  
if((l-i)>THRESHOLD){ AI2>{V  
stack[++top]=i; VM"*@T  
stack[++top]=l-1; 7s1LK/R|u  
} 'deqF|Iox  
if((j-l)>THRESHOLD){ Xj21:IMR  
stack[++top]=l+1; JDBNi+t  
stack[++top]=j; "`5BAv;u  
} ]j< & :_  
m ,TYF  
} ooT~R2u  
file://new InsertSort().sort(data); BO;LK-V  
insertSort(data); {4b8s%:!4  
} <nn!9V\C   
/** 9|//_4]  
* @param data Q3x.qz  
*/ uB 35CRd  
private void insertSort(int[] data) { i%9xt1c_  
int temp; /f -\ 3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JC4Z^/\.  
} }C&kzJBEF  
} P4~C0z  
} N9cUlrDO  
mKBPIQ+ZS  
} 1PT0<C-  
kam \dn04  
归并排序: !,PoH  
a5%IjgQ&z  
package org.rut.util.algorithm.support; y?{YQ)fj  
PWs=0.Wj  
import org.rut.util.algorithm.SortUtil; R~(_m#6`:  
>]WQ1E[=  
/** 5K?%Eo72!=  
* @author treeroot h:'wtn@l(  
* @since 2006-2-2 o^~KAB7  
* @version 1.0 X !l#1  
*/ 4gK_' b6"  
public class MergeSort implements SortUtil.Sort{ 04R-}  
C?%Oi:Gi&  
/* (non-Javadoc) =%oKYQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j0[9Cj^%c  
*/ KR/SMwy  
public void sort(int[] data) { *7 >K"j  
int[] temp=new int[data.length]; XxE>KeP  
mergeSort(data,temp,0,data.length-1); n7K\\|X  
} OAtn.LU  
*|k/lI  
private void mergeSort(int[] data,int[] temp,int l,int r){ i fbO<  
int mid=(l+r)/2; SiSx ym  
if(l==r) return ; -pm^k-%v  
mergeSort(data,temp,l,mid); FBJ Lkg0  
mergeSort(data,temp,mid+1,r); Po82nKAh  
for(int i=l;i<=r;i++){ .(2ui~ed  
temp=data; _ ?Z :m  
} !RwOU Ck  
int i1=l; o9uir"=  
int i2=mid+1; =qVD"Z]z  
for(int cur=l;cur<=r;cur++){ ?]u=5gqUU  
if(i1==mid+1) {H%1sI  
data[cur]=temp[i2++]; 0CRk&_ht  
else if(i2>r) ~b.e9FhdA  
data[cur]=temp[i1++]; ZtqN8$[6n  
else if(temp[i1] data[cur]=temp[i1++]; N b@zn0A(;  
else %QrpFE5 V5  
data[cur]=temp[i2++]; >R}p*=J  
} 9q !./)  
} 5A=FEg  
]QAMCu(>  
} l@ W?qw  
@.h|T)Zyr  
改进后的归并排序: Vy[ m%sEP  
|#=4]]>m  
package org.rut.util.algorithm.support; ,BG L|5?3z  
9N]V F'  
import org.rut.util.algorithm.SortUtil; 2DTBL:?`  
Y:} !W  
/** \@HsMV2+zN  
* @author treeroot )$e_CJ}9e  
* @since 2006-2-2 7cJh^M   
* @version 1.0 w(Hio-l=  
*/ 42mZ.,<  
public class ImprovedMergeSort implements SortUtil.Sort { uKocEWB=/F  
gT~Yn~~b  
private static final int THRESHOLD = 10; ;nB.f.e`  
/DBldL7yi  
/* $q~:%pQv  
* (non-Javadoc) Gt;59}  
* 1ti4 ZM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3A.T_mGCs  
*/ 1W +QcK4k  
public void sort(int[] data) { D/-$~u_o  
int[] temp=new int[data.length]; L H`z '7&/  
mergeSort(data,temp,0,data.length-1); Td6"o&0A!  
} VDP \E<3"  
xK3}z N$T  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,HLgb}~  
int i, j, k; _Y gvLz %  
int mid = (l + r) / 2; I,xV&j+<  
if (l == r) 2E":6:Wsw  
return; m@){@i2.  
if ((mid - l) >= THRESHOLD) <ny)yK  
mergeSort(data, temp, l, mid); eDPmUlC+-  
else Gv3AJ'NL  
insertSort(data, l, mid - l + 1); `<:D.9vO "  
if ((r - mid) > THRESHOLD) A(Ss:7({  
mergeSort(data, temp, mid + 1, r); _7LZ\V+MLW  
else 1Xi.OGl  
insertSort(data, mid + 1, r - mid); Hs~u&c  
NXw$PM|+R  
for (i = l; i <= mid; i++) { g$jZpU  
temp = data; E}WO?xxv74  
} $m-rn'Q  
for (j = 1; j <= r - mid; j++) { h!L6NS_Q,  
temp[r - j + 1] = data[j + mid]; zU)Ib<$  
} 4D-4BxN*  
int a = temp[l]; }}'0r2S  
int b = temp[r]; V]$Tbxg  
for (i = l, j = r, k = l; k <= r; k++) { (NBq!;_2,x  
if (a < b) { ?yq1\G)]  
data[k] = temp[i++]; (n,!v)  
a = temp; fudIUG.  
} else { o@&d d NO  
data[k] = temp[j--]; l6lyRJ  
b = temp[j]; hh<Es|v  
} s;;"^5B.  
} T$ )dc^  
} h NCoX*icd  
ZOK,P  
/** Dqw?3 KB  
* @param data Z/S7ei@56  
* @param l oHbG-p  
* @param i FX#fh 2  
*/ #AJo75E%  
private void insertSort(int[] data, int start, int len) { ![,W?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _s_%}8o  
} *uq}jlD`!  
} 3bi,9 >%  
} ?Gq|OT 8  
} nd[{DF?)/  
NdW2OUxw"  
堆排序: D^5bzZk N  
c= }#8d.  
package org.rut.util.algorithm.support; LZB=vc|3/  
O*ql!9}E{  
import org.rut.util.algorithm.SortUtil; x(Us O}  
0Lo)Ni^"  
/** 5k^UZw  
* @author treeroot `]8z]PD  
* @since 2006-2-2 9"H]zfW  
* @version 1.0 ;m+*R/  
*/ Oa'DVfw2J  
public class HeapSort implements SortUtil.Sort{ n!B*n(;!u  
H^c8r^#  
/* (non-Javadoc) i.e1?Zk1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; =FSpZ@  
*/ d/k70Ybk  
public void sort(int[] data) { dt -=7mz#  
MaxHeap h=new MaxHeap(); J AK+v  
h.init(data); f2JeXsOI  
for(int i=0;i h.remove(); 8"zFTP*;u  
System.arraycopy(h.queue,1,data,0,data.length); d,_Ky#K5b  
} n!r<\4I  
_U"9#<  
private static class MaxHeap{ Whd2mKwiO  
 J(  
void init(int[] data){ M%evk4_27  
this.queue=new int[data.length+1]; ]R$ u3F  
for(int i=0;i queue[++size]=data; I+?9}t  
fixUp(size); #xMl<  
}  / >Z`?  
} v^=Po6S[{+  
NRM=0-16u$  
private int size=0; VoOh$&"M  
\!erP!$x .  
private int[] queue; $X9`~Sv _  
bk-veJR  
public int get() { TA.ugF)h  
return queue[1]; .^fVm  
} J m5).  
fR& ;E  
public void remove() { '9+JaB  
SortUtil.swap(queue,1,size--); \Tc<27-  
fixDown(1);   pE<@  
} b=5"*=T{+  
file://fixdown |bwz  
private void fixDown(int k) { Lad8C  
int j; vbo:,]T<A  
while ((j = k << 1) <= size) { 9\_^"5l  
if (j < size %26amp;%26amp; queue[j] j++; !&$uq|-  
if (queue[k]>queue[j]) file://不用交换 (^:0g.~c  
break; ,[ UqUEO  
SortUtil.swap(queue,j,k); eCDwY:t`  
k = j; GI~JIXHTQ  
} yZ_6yJw3}  
} oV)#s!  
private void fixUp(int k) { fL #e4  
while (k > 1) { R|jt mI?  
int j = k >> 1; F ka^0  
if (queue[j]>queue[k]) (9#$za>  
break; *?2aIz"  
SortUtil.swap(queue,j,k); &DX&*Xq2  
k = j; /Ria"lLv  
} % Rv ;e  
} e;M#MkP7  
8QYP\7}o  
} jf`QoK  
)(?,1>k`Z  
} jvI!BZ  
M@k8;_5  
SortUtil: l@ amAusE  
xnuu#@f  
package org.rut.util.algorithm; e ej:  
lo1<t<w`  
import org.rut.util.algorithm.support.BubbleSort; D#=$? {w  
import org.rut.util.algorithm.support.HeapSort; }#u.Of`6"  
import org.rut.util.algorithm.support.ImprovedMergeSort;  b6`_;Z  
import org.rut.util.algorithm.support.ImprovedQuickSort; \iBEyr]  
import org.rut.util.algorithm.support.InsertSort; K@JGGgrE`!  
import org.rut.util.algorithm.support.MergeSort; kBh*@gf  
import org.rut.util.algorithm.support.QuickSort; ~HFqAOr  
import org.rut.util.algorithm.support.SelectionSort; ;;^OKrzWW  
import org.rut.util.algorithm.support.ShellSort; >TB"Ez09  
G`/5=  
/** kB2]Z}   
* @author treeroot P}2i[m.*,  
* @since 2006-2-2 3 #8bG(  
* @version 1.0 5^,"Ve|  
*/ FZvh]ZX  
public class SortUtil { p;y\%i_  
public final static int INSERT = 1; Y#VtZTcT  
public final static int BUBBLE = 2; eWN[EJI<  
public final static int SELECTION = 3; GOKca%DT=  
public final static int SHELL = 4; ,2|(UTv  
public final static int QUICK = 5; Oc Gg'R7  
public final static int IMPROVED_QUICK = 6; mMNT.a  
public final static int MERGE = 7; % `4\ 8H`  
public final static int IMPROVED_MERGE = 8; ;?{N=x8  
public final static int HEAP = 9; *%3%Zj,{  
'ie+/O@G  
public static void sort(int[] data) { T{A_]2 G  
sort(data, IMPROVED_QUICK); tdCD!rV`{  
} TFQX}kr]  
private static String[] name={ b1*5#2rs.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" C[-M ~yIL  
}; Jq5](F!z  
K P1;u#v  
private static Sort[] impl=new Sort[]{ ?tA<:.<vtY  
new InsertSort(), 8\N`2mPt  
new BubbleSort(), >FR;Ux~a  
new SelectionSort(), A-&'/IHR"B  
new ShellSort(), )YtdU(^J$  
new QuickSort(), ?;bsg 9  
new ImprovedQuickSort(), JO3x#1~;_  
new MergeSort(), qg`8f?  
new ImprovedMergeSort(), 6>X9|w  
new HeapSort() {:63% j  
}; iI]E%H}  
I+!?~]AUuq  
public static String toString(int algorithm){ @VzD> ?)  
return name[algorithm-1]; ~S85+OJ;M  
} pzQWr*5a  
kKFhbHUZa  
public static void sort(int[] data, int algorithm) { (}4]U=/nV  
impl[algorithm-1].sort(data); h1(GzL%i_  
} +o4W8f=Ga  
apkmb<  
public static interface Sort { mj7Em&  
public void sort(int[] data); zrazbHI  
} ;X z fd  
Rxf.@E  
public static void swap(int[] data, int i, int j) { DNyU]+\L[l  
int temp = data; >Oz~j>jL  
data = data[j]; ,&q Q[i  
data[j] = temp; "!AbH<M;@  
} %3@a|#g  
}  |Ok=aV7  
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