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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。 <;=?~QK%-  
插入排序: QZYD;&iY&  
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package org.rut.util.algorithm.support; 3.xsCcmP  
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import org.rut.util.algorithm.SortUtil; 9]xOu Cb  
/** /MosE,7l  
* @author treeroot k-*H=km  
* @since 2006-2-2 )xoIH{  
* @version 1.0 OLXG0@  
*/ ,1a6u3f,  
public class InsertSort implements SortUtil.Sort{ 18zv]v %  
dE%rQE7'  
/* (non-Javadoc) ?WKFDL'_0j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L^Fni~  
*/ zw_Xh~4"b  
public void sort(int[] data) { UQ}[2x(Kb  
int temp; 6H53FMqr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;S7MP`o@  
} {M )Y6\v  
} sV%<U-X  
} 7:)=  
|p-, B>p!  
} to|O]h2*U2  
O>IY<]x>L  
冒泡排序: 9!NL<}]{  
%7x x"$P:R  
package org.rut.util.algorithm.support; ;wa- \Z  
l#Ipo5=  
import org.rut.util.algorithm.SortUtil; 9l]+ rs +  
nxS|]  
/** h-].?X,]Q  
* @author treeroot wzwEYZN(q  
* @since 2006-2-2 W_Z%CBjcT  
* @version 1.0 @ 4#q  
*/ 0r*E$|zZ  
public class BubbleSort implements SortUtil.Sort{ .hzzoLI2  
iV58 m  
/* (non-Javadoc) ; $i{>mDT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )+OI}  
*/ +C' u!^ )  
public void sort(int[] data) { V|13%aE_v  
int temp; jAie[5  
for(int i=0;i for(int j=data.length-1;j>i;j--){  MX2]Q  
if(data[j] SortUtil.swap(data,j,j-1); #^|y0:  
} Nj rF":'Y  
} @n"7L2wY  
} ? %XTD39  
} %JF^@\E!|  
p.A_,iE  
} UyTsUkY  
6!*be|<&  
选择排序: IW?).%F  
U5\^[~vW  
package org.rut.util.algorithm.support; K!Te*?b  
_~/F-  
import org.rut.util.algorithm.SortUtil; SR!EQ<  
_2xNio&  
/** LmWZ43Z"@  
* @author treeroot Kkcb' aDR  
* @since 2006-2-2 BZ* ',\o  
* @version 1.0 2FU+o\1 %  
*/ lqe|1vN  
public class SelectionSort implements SortUtil.Sort { Y3=5J\d!a  
(H5nz':  
/* Iv+JEuIi  
* (non-Javadoc) ,h,OUo]LIY  
* /Jj7 +?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c!*yxzs\  
*/ kw{dvE\K  
public void sort(int[] data) { 1y'8bt~7Pf  
int temp; Ne#FBRu5  
for (int i = 0; i < data.length; i++) { kl%%b"h'  
int lowIndex = i; M15Ce)oB1(  
for (int j = data.length - 1; j > i; j--) { d9e_slx  
if (data[j] < data[lowIndex]) { Kh&W\\K  
lowIndex = j; v3O+ ;4  
} 7^)8DwAl  
} #{K}o}  
SortUtil.swap(data,i,lowIndex); 0)F.Y,L  
} '5V} Z3zJ/  
} ?1w{lz(P  
.j^tFvN~L  
} iZY4+ X  
i<@"+~n~GK  
Shell排序: X .,Lmh  
M$_E:u&D  
package org.rut.util.algorithm.support; 5|O~  
~wYGTm=(n  
import org.rut.util.algorithm.SortUtil; |?v(?  
!z? &  
/** f#mNx  
* @author treeroot + OKk~GYf  
* @since 2006-2-2 k;/K']4y  
* @version 1.0 >x?x3#SX  
*/ J;HYGu:  
public class ShellSort implements SortUtil.Sort{ I\e/ Bv^  
zUq ^  
/* (non-Javadoc) @7UZ{+67*C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;QO3^P}  
*/ *$e1Bv6 $  
public void sort(int[] data) { #dA9v7  
for(int i=data.length/2;i>2;i/=2){ !]f80z  
for(int j=0;j insertSort(data,j,i); <<'%2q5  
} BOt1J_;(rO  
} `vjn,2S}  
insertSort(data,0,1); ) XCG4-1  
} `]~1pc  
%#t*3[  
/** 1.24ZX  
* @param data Y"H'BT!b}  
* @param j zUuOX5-6x  
* @param i gGZ-B<  
*/ t 57MKDn  
private void insertSort(int[] data, int start, int inc) { s>J\h  
int temp; 'Em3;`/C*+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7N:3  
} TOT#l6yqdd  
} S)LvYOOB@  
} nA*U drcn  
-al\* XDz  
} '+EtnWH s  
R?{f:,3R  
快速排序: i%@blz:_Y  
8c`E B-y  
package org.rut.util.algorithm.support; |$|B0mj  
Es<& 6  
import org.rut.util.algorithm.SortUtil; ;*%3J$T+  
eI,'7u4q  
/** srlxp_^  
* @author treeroot '\B0#z3  
* @since 2006-2-2 QmgO00{  
* @version 1.0 lA{JpH_Y8s  
*/ p=!12t  
public class QuickSort implements SortUtil.Sort{ []lMv ZW  
L"KKW c  
/* (non-Javadoc)  p!> 5}f6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <-6f}wN  
*/ knn9s0'Q  
public void sort(int[] data) { nsL"'iQ  
quickSort(data,0,data.length-1); b>h L*9  
} *{:Zdg'~E  
private void quickSort(int[] data,int i,int j){ 5GK> ~2c(  
int pivotIndex=(i+j)/2; ~P7zg!p/q  
file://swap [][ze2+b  
SortUtil.swap(data,pivotIndex,j); HPMj+xH  
Ec9%RAxl  
int k=partition(data,i-1,j,data[j]); 4A0v>G`E*#  
SortUtil.swap(data,k,j); >sjvE4s  
if((k-i)>1) quickSort(data,i,k-1); o9rZ&Q<  
if((j-k)>1) quickSort(data,k+1,j); sU(<L0  
a B$x(8pP@  
} #<K'RJn  
/** LpK? C<?x  
* @param data >P+o NY  
* @param i VTUSM{TC  
* @param j uc{s\_  
* @return R XN0v@V  
*/ 7}1Z7"?  
private int partition(int[] data, int l, int r,int pivot) { 4A`U [r_>D  
do{ d>gQgQ;g  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W7W(jMH  
SortUtil.swap(data,l,r); BZQ"[-V{  
} M ~ ;]d  
while(l SortUtil.swap(data,l,r); z"nMR_TTu  
return l; iNs@8<=$T  
} U5 ia|V  
cG"wj$'w  
} ;V?3Hwl  
2FN E ;y(  
改进后的快速排序: Cxd^i  
h ,\5C/  
package org.rut.util.algorithm.support; )[ QT ?;  
q eDXG  
import org.rut.util.algorithm.SortUtil; %Rt 5$+dNT  
Nwj M=GG  
/** "!Qi$ ]  
* @author treeroot b@S~ =  
* @since 2006-2-2 7{tU'`P>  
* @version 1.0 wg+[T;0S  
*/ j #~ S"t  
public class ImprovedQuickSort implements SortUtil.Sort { XRmE  
\_(|$Dhq  
private static int MAX_STACK_SIZE=4096; m*wDJEKo  
private static int THRESHOLD=10; 0.S7uH%"  
/* (non-Javadoc) Aj8zFt ]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }hE!0q~MfM  
*/ 4T6: C?V  
public void sort(int[] data) { 0GW69 z  
int[] stack=new int[MAX_STACK_SIZE]; 5yyc 0UG  
4/V;g%0uN;  
int top=-1; TNDp{!<|L;  
int pivot; #kk5{*`  
int pivotIndex,l,r; ]u^ybW"  
7z_ZD0PxPc  
stack[++top]=0; JXV#V7  
stack[++top]=data.length-1; ev #/v:$?  
Ei<m/v  
while(top>0){ T/0cPn0>  
int j=stack[top--]; U ;A,W$<9  
int i=stack[top--]; NoMlTh(O  
v .ow`MO=;  
pivotIndex=(i+j)/2; .HN4xL  
pivot=data[pivotIndex]; 6i;q=N$'  
Zt& 7p  
SortUtil.swap(data,pivotIndex,j); LSR0yCU  
i=R%MH+  
file://partition EERCb%M 8Z  
l=i-1; !UR3`Xk  
r=j; JqUft=p5  
do{ iSX HMp4V  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1LaJ hrp?  
SortUtil.swap(data,l,r); Q;ZV`D/FA  
} e7y,zcbv  
while(l SortUtil.swap(data,l,r); <isU D6TC  
SortUtil.swap(data,l,j); ._]*Y`5)d  
m70AWG  
if((l-i)>THRESHOLD){ EL%Pv1  
stack[++top]=i; 1,:QrhC  
stack[++top]=l-1; 6-~ZOMlV  
} rmi&{o:  
if((j-l)>THRESHOLD){ R_9M-RP6*  
stack[++top]=l+1;  '9'f\  
stack[++top]=j; G5|'uKz2"  
} 9@?|rj e9  
b'C#]DorE  
} H2xDC_Fs  
file://new InsertSort().sort(data); KSJ+3_7 ]k  
insertSort(data); E@%1HO_  
} z0x^HDAeC  
/** ^?_MIS`4N  
* @param data h@]{j_$u  
*/ S'`G7ht  
private void insertSort(int[] data) { |'lNR)5  
int temp; -aLM*nIoe  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fu{v(^  
} PZvc4  
} AHMvh 7O?  
} S?zP; iFj  
Q@|"xKa  
} >sdF:(JV&  
#S] O|$&*  
归并排序: Q E pCU)  
XZQ-Ig18  
package org.rut.util.algorithm.support; elR1NhB|p  
R%~~'/2V  
import org.rut.util.algorithm.SortUtil; &> _aY #  
j+>[~c;0)  
/** -tx%#(?wH  
* @author treeroot [VLq/lg*  
* @since 2006-2-2 I %sw(uoE  
* @version 1.0 fLeHn,*,"  
*/ q,_E HPc  
public class MergeSort implements SortUtil.Sort{ N?8nlrDQ  
Q-A_8  
/* (non-Javadoc) iaQfxQP1w%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EiP N44(  
*/ @My RcC  
public void sort(int[] data) { &xvNR=K[`  
int[] temp=new int[data.length]; E:O/=cT  
mergeSort(data,temp,0,data.length-1); V)4?y9xZv  
} \ KsKb0sM  
e A3 NyL  
private void mergeSort(int[] data,int[] temp,int l,int r){ Sj:c {jyJd  
int mid=(l+r)/2; ?r*}1WsH  
if(l==r) return ; ' R2*3<  
mergeSort(data,temp,l,mid); =(~*8hJ  
mergeSort(data,temp,mid+1,r); J*zQ8\f=}  
for(int i=l;i<=r;i++){ uhv_'Q  
temp=data; 5!wjYQt3  
} cmYzS6f,7  
int i1=l; VD $PoP  
int i2=mid+1; gv&Hu$ ca  
for(int cur=l;cur<=r;cur++){ )Jw$&%/{1  
if(i1==mid+1) Y9 Bk$$#\  
data[cur]=temp[i2++]; xT( pB-R  
else if(i2>r) /XA*:8~!  
data[cur]=temp[i1++]; fh66Gn,  
else if(temp[i1] data[cur]=temp[i1++]; 4#t=%}  
else Gm> =s  
data[cur]=temp[i2++]; I~E&::,  
} |Om9(xT  
} D><^7nr%  
X{[$4\di{  
} ug'^$geM  
9 &Ry51  
改进后的归并排序: k py)kS  
4N1)+ W8k*  
package org.rut.util.algorithm.support;  ;5  
:T>OJ"p  
import org.rut.util.algorithm.SortUtil; i7rk%q  
2f{a||  
/** KxBvL[/  
* @author treeroot Bk@EQdn  
* @since 2006-2-2 :c Er{U8  
* @version 1.0 ?%lfbZ  
*/ {9) HB:  
public class ImprovedMergeSort implements SortUtil.Sort { {%RwZ'  
h Fan$W$  
private static final int THRESHOLD = 10; '*Tt$0#o  
kIe)ocJg  
/* qv >l  
* (non-Javadoc) Eg2SC?5  
* {lUaN0O:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z 0v&AD=  
*/ Zlt,Us`  
public void sort(int[] data) { iSfRo 31  
int[] temp=new int[data.length]; b_u; `^  
mergeSort(data,temp,0,data.length-1); e2>AL  
} >5TXLOYZ  
!w0=&/Y{R  
private void mergeSort(int[] data, int[] temp, int l, int r) { %h;1}SFl0  
int i, j, k; TTWiwPo59  
int mid = (l + r) / 2; |+JC'b?,  
if (l == r) ccx0aC3@I  
return; bj_/  
if ((mid - l) >= THRESHOLD) Z.rhM[*+0C  
mergeSort(data, temp, l, mid); >z% WW&Z'  
else ~BE=z:  
insertSort(data, l, mid - l + 1); :~ &#9  
if ((r - mid) > THRESHOLD)  tO D}&  
mergeSort(data, temp, mid + 1, r); S)'&+HamI  
else ELg$tc  
insertSort(data, mid + 1, r - mid); sXT8jLIf  
+tG'  
for (i = l; i <= mid; i++) { \.GA" _y  
temp = data; 1=z\,~ b  
} CL?=j| Ea  
for (j = 1; j <= r - mid; j++) { &Z9rQH81f>  
temp[r - j + 1] = data[j + mid]; Po.by~|  
} e? |4O< @  
int a = temp[l]; 1zCgPiAem  
int b = temp[r]; CHjm7  
for (i = l, j = r, k = l; k <= r; k++) { ,w=u?  
if (a < b) { 6\VZ 6oS  
data[k] = temp[i++]; eOfVBF<C2  
a = temp; J$T(p%  
} else { G,1g~h%I$  
data[k] = temp[j--]; }I#_H  
b = temp[j]; |TF6&$>d  
} !kH 1|  
} cFq2 6(e  
} \JCpwNT{P  
 H =&K_  
/** V^>< =DNE  
* @param data YM.  
* @param l uu>R)iTQ%S  
* @param i ; 0M"T[c  
*/ SP>&+5AydX  
private void insertSort(int[] data, int start, int len) { N-Bw&hEZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K!2%8Ej,J  
} w6-<HPW<S  
} |0X~D}r|J  
} ta'wX   
} 0bSnD|#I  
rd=+[:7L  
堆排序: Gq%,'am f  
N0ef5J JM`  
package org.rut.util.algorithm.support; :KGPQ@:O  
Bo'v!bI7  
import org.rut.util.algorithm.SortUtil; 5aXE^.`  
` 7?EE1o  
/** o!c~"  
* @author treeroot 'TA !JB+  
* @since 2006-2-2 m6A\R KJ'  
* @version 1.0 6 .[3N~pq  
*/ ;hEeFJ=/G  
public class HeapSort implements SortUtil.Sort{ 1F+JyZK}w  
)@=fGNDt  
/* (non-Javadoc) am7~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yb0Mn*X+ N  
*/ P{: 5i%qC  
public void sort(int[] data) { k%aJ%(  
MaxHeap h=new MaxHeap(); SO<9?uk.  
h.init(data); hrXk7}9  
for(int i=0;i h.remove(); o]GZq..  
System.arraycopy(h.queue,1,data,0,data.length); I\Cg-&e  
} "{2niBx  
58eO|c(  
private static class MaxHeap{ ~]n=TEJ>  
1qm*#4x  
void init(int[] data){ 9;L8%T (  
this.queue=new int[data.length+1]; K<50>uG  
for(int i=0;i queue[++size]=data; r8[)Ccv  
fixUp(size); XK)0Mt\  
} k[@/N+;")`  
} ~]'yUd1gSZ  
gg Nvm  
private int size=0; Y n0iu$;n  
:-(qqC:  
private int[] queue; .SNg2.  
EW+QVu@  
public int get() { 0\!v{A> I'  
return queue[1]; )HX(-"c  
} Y.#fpG'  
10bv%ZX7  
public void remove() { 8PWEQ<ev7>  
SortUtil.swap(queue,1,size--); HK%W7i/k@  
fixDown(1); g0-rQA  
} )l`VE_(|  
file://fixdown 0ZZ Wj%  
private void fixDown(int k) { wyLyPJv  
int j; J6<O|ng::  
while ((j = k << 1) <= size) { /Ba/gq0j  
if (j < size %26amp;%26amp; queue[j] j++; *>xCX  
if (queue[k]>queue[j]) file://不用交换 6` Aw!&{  
break; s%RG_"l  
SortUtil.swap(queue,j,k); OGG9f??  
k = j; +*aC \4w  
} e{ *yV#Wl  
} ;<nJBZB9u  
private void fixUp(int k) { @Qp#Tg<'  
while (k > 1) { Gi*_ &  
int j = k >> 1; Hxleh><c-  
if (queue[j]>queue[k]) ?I\,RiZkz^  
break; @Y}G,i  
SortUtil.swap(queue,j,k); _>8Q{N\- {  
k = j; 4U u`1gtz  
} I~;H'7|e  
} -zI9E!24  
Ka<J* k3  
} < Pi#-r.,  
.1_kRy2*.  
} \^jRMIM==  
0s RcA-9  
SortUtil: jdx T662q  
~=|QPO(d  
package org.rut.util.algorithm; J93xxj  
1xSG(!  
import org.rut.util.algorithm.support.BubbleSort; #&%>kfeJ)<  
import org.rut.util.algorithm.support.HeapSort; i?7 ?I  
import org.rut.util.algorithm.support.ImprovedMergeSort; "b%FkD  
import org.rut.util.algorithm.support.ImprovedQuickSort; <;Tr   
import org.rut.util.algorithm.support.InsertSort; Z#YNL-x  
import org.rut.util.algorithm.support.MergeSort; R dNL f  
import org.rut.util.algorithm.support.QuickSort; |IS$Om  
import org.rut.util.algorithm.support.SelectionSort; F07X9s44E  
import org.rut.util.algorithm.support.ShellSort; p./0N.  
aK 7 }}  
/** ~@#a*="  
* @author treeroot +d(|Jid  
* @since 2006-2-2 iq,rS"  
* @version 1.0 e^$JGh2  
*/ 15r=d  
public class SortUtil { {w7/M]m-  
public final static int INSERT = 1; BfD&e`KI  
public final static int BUBBLE = 2; \NKQ:F1  
public final static int SELECTION = 3; FW|_8q?}<  
public final static int SHELL = 4; 9PMIF9"   
public final static int QUICK = 5; |--Jd$ dj  
public final static int IMPROVED_QUICK = 6; qwO@>wQ}~  
public final static int MERGE = 7; N,3iSH=cN[  
public final static int IMPROVED_MERGE = 8; cv7:5P  
public final static int HEAP = 9; P%N)]b<c*  
qB&Je$_uh  
public static void sort(int[] data) { dP`B9>r  
sort(data, IMPROVED_QUICK); sRqecG(n  
} uL^`uI#I  
private static String[] name={ 7!\zo mx  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |=MhI5gsx  
}; vo%"(!  
5L_`Fw\l  
private static Sort[] impl=new Sort[]{ v G9>e&Be  
new InsertSort(), 7R# }AQ   
new BubbleSort(), h_SkX@"/-  
new SelectionSort(), II!~"-WH  
new ShellSort(), =G" ney2  
new QuickSort(), K9y~ e  
new ImprovedQuickSort(), TPak,h(1  
new MergeSort(), ww #kc!'  
new ImprovedMergeSort(), 6CSoQ|c{  
new HeapSort() j-.Y!$a%6  
}; |q z%6w=  
f8`dJ5i  
public static String toString(int algorithm){ n9n)eI)R  
return name[algorithm-1]; GR4DxlX  
} ZY@ntV?  
P(/eVD#v  
public static void sort(int[] data, int algorithm) { J0oeCb  
impl[algorithm-1].sort(data); +-,iC6kK  
} `uH7~ r^  
mCG&=Fx  
public static interface Sort { ]}p<P):hO  
public void sort(int[] data); O?cU6u;W  
} S>S7\b'  
=O-irGms*  
public static void swap(int[] data, int i, int j) { (z?j{J  
int temp = data; -'SA &[7dP  
data = data[j]; #qpP37G  
data[j] = temp; To5hVL<Ex"  
} Z*Gf`d:  
} z?( b|v  
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