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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。 tI{pu}/"#  
插入排序: ;_F iiBk7(  
r%&hiobMYs  
package org.rut.util.algorithm.support; sYYg5vL9  
BT2[@qH|qF  
import org.rut.util.algorithm.SortUtil; +wY3E*hU  
/** )Mi #{5z  
* @author treeroot X.o[=E  
* @since 2006-2-2 nsaf6y&E  
* @version 1.0 fFqK.^Tn  
*/ .]k(7F!W  
public class InsertSort implements SortUtil.Sort{ %Jq(,u  
Ad+-/hxc  
/* (non-Javadoc) bsR^H5O@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U-Fr[1I6p  
*/ q@8Rlc&  
public void sort(int[] data) { TXH: +mc  
int temp; i6h:%n]Io  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3r%I *  
} b,#cc>76\  
} ahhVl=9/ao  
} ygd'Nh!@  
Rqa#;wb!(  
} 6K[s),rdv  
|*Z'WUv  
冒泡排序: |/]bpG'z  
qV@xEgW#r  
package org.rut.util.algorithm.support; 3S_KycE{  
Yu9Ccj`  
import org.rut.util.algorithm.SortUtil; g5M-Vu  
hkRv0q.'  
/** Ipb 4{A&"\  
* @author treeroot U :J~O y_Z  
* @since 2006-2-2 7 G~MqnO|  
* @version 1.0 !:c7I@  
*/ "sUe:F;  
public class BubbleSort implements SortUtil.Sort{ yV$p(+KkS  
qusgX;)  
/* (non-Javadoc) n?YGX W/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Q6,,/nn  
*/ Q5Y4@  
public void sort(int[] data) { 4Q z  
int temp; bO9F rEz5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %UV_ 3  
if(data[j] SortUtil.swap(data,j,j-1); 4:nmo@K &~  
} !#f4t]FM`B  
} n)sK#C-VA  
} tCI8 \~  
} l!~8  
^X)U^Qd  
} x*}(l%[  
OC 7:Dp4  
选择排序: VtZ  
x|F6^d   
package org.rut.util.algorithm.support; E-E+/.A  
SXwgn >  
import org.rut.util.algorithm.SortUtil; fx99@%Ii  
S]K^wj[  
/** ]m=* =LLC  
* @author treeroot R)nhgp(~  
* @since 2006-2-2 Mf%/t HK  
* @version 1.0 /fBZRdB  
*/ h:a5FK@  
public class SelectionSort implements SortUtil.Sort { A}t.`FLP,j  
U1 1rj,7  
/* U%t:]6d&}  
* (non-Javadoc) D<5gdIw  
* /UN%P2>^1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *yiJw\DRN  
*/ L)y}  
public void sort(int[] data) { NV36Q^Am[  
int temp; HTQ .kV  
for (int i = 0; i < data.length; i++) { p%xo@v(  
int lowIndex = i; {|%5}\%  
for (int j = data.length - 1; j > i; j--) { 4{}u PbS  
if (data[j] < data[lowIndex]) { NO`LSF  
lowIndex = j; tN3Xn]   
} iBV*GW  
} qAivsYN*  
SortUtil.swap(data,i,lowIndex); .NQoqXR  
} J4!Z,-  
} m-, '  
Z !wDh_  
} ##}a0\x|  
d0MX4bhZ  
Shell排序: j 9y,UT  
E+ JGqk  
package org.rut.util.algorithm.support; Y0&w;P  
AJC Wp4,  
import org.rut.util.algorithm.SortUtil; X H{5E4P  
,y:q]PR  
/** }b)?o@9}:  
* @author treeroot Pkc4=i,`A  
* @since 2006-2-2 ]9R?2{"K  
* @version 1.0 K~x G+Kh  
*/ 5c'rnMW4+p  
public class ShellSort implements SortUtil.Sort{ @2YO_rL[  
;9,Ll%Lk<  
/* (non-Javadoc) ?9mWMf%t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A5ktbj&gy<  
*/ >+#TsX{  
public void sort(int[] data) { UrN$nhH  
for(int i=data.length/2;i>2;i/=2){ &XrF#s  
for(int j=0;j insertSort(data,j,i); s]U'*?P  
} hCQ{D|/  
} q'C'S#qqn  
insertSort(data,0,1); V0wK.^]+}/  
} }9 qsPn  
XO"!)qF  
/**  by>,h4  
* @param data *`|.:'  
* @param j cMC1|3  
* @param i i T 4H@  
*/ ndF Kw  
private void insertSort(int[] data, int start, int inc) { d!Y,i!l!  
int temp; C\$7C5/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); IB(IiF5  
} AGLzA+6M  
} NawnC!~ $  
} ^R>&^"oI  
%#/7Tl:  
} nzhQ\'TC  
rf1-E57#  
快速排序: i]8zZRe  
yK{;72  
package org.rut.util.algorithm.support; p1J%=  
>'Y]C\  
import org.rut.util.algorithm.SortUtil; #<yR:3  
m feyR  
/** i+21tG$  
* @author treeroot _4[kg)#+  
* @since 2006-2-2 bL swq  
* @version 1.0 34s:|w6y  
*/ wz073-v>ZV  
public class QuickSort implements SortUtil.Sort{ FIC 2)  
#FTXy>W  
/* (non-Javadoc) WiPMvl8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4A|5eg9N  
*/ \-V  
public void sort(int[] data) { TQID-I  
quickSort(data,0,data.length-1); `A&64D  
} XImb"7|  
private void quickSort(int[] data,int i,int j){ xQWZk`6~L  
int pivotIndex=(i+j)/2; `4\H'p  
file://swap zLf^O%zN  
SortUtil.swap(data,pivotIndex,j); oE-i`;\8  
9FcCq*D  
int k=partition(data,i-1,j,data[j]); 9.vHnMcq  
SortUtil.swap(data,k,j); BO/2kL8*  
if((k-i)>1) quickSort(data,i,k-1); R4@C>\c %m  
if((j-k)>1) quickSort(data,k+1,j); al#yc  
(Q#A Br8  
} 9)l[$X  
/** }{j[  
* @param data 47ir QK*  
* @param i eR8h4M~O  
* @param j MFE~bU(h  
* @return )7c^@I;7  
*/ 6M612   
private int partition(int[] data, int l, int r,int pivot) { ?w3f;v  
do{ z'fGHiX7.0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); XK(<N<Z@|e  
SortUtil.swap(data,l,r); ew }C*4qH  
} .hETqE`E  
while(l SortUtil.swap(data,l,r); 3<'SnP3mY  
return l; KY2xKco  
}  '=%vf  
|_!xA/_U'T  
} )|Y"^K%Jm  
h r*KDT^!  
改进后的快速排序: e:NzpzI"v  
XXxX;xz$  
package org.rut.util.algorithm.support; 0($MN]oZa  
15Yy&9D  
import org.rut.util.algorithm.SortUtil; s- g[B(  
o6B!ikz 8  
/** sx*(JM}Be  
* @author treeroot +de.!oY  
* @since 2006-2-2 LLaoND6  
* @version 1.0 o*5|W9  
*/ Bv3?WW  
public class ImprovedQuickSort implements SortUtil.Sort { (_U&EX%  
)Bd+jli|s  
private static int MAX_STACK_SIZE=4096; lyv9eM  
private static int THRESHOLD=10; 1)%9h>F7  
/* (non-Javadoc) s{< rc>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MEq ()}7P  
*/ 0D$+WX  
public void sort(int[] data) { NZdQz  
int[] stack=new int[MAX_STACK_SIZE]; {PYN3\N,  
%<I0-o  
int top=-1; 4y%N(^  
int pivot; 8.]dThaq  
int pivotIndex,l,r; 9dy"Y~c  
|l7e*$j  
stack[++top]=0; )h>Cp,|{  
stack[++top]=data.length-1; 2JtGS-t  
ed>_=i  
while(top>0){ M7!&gFv8  
int j=stack[top--]; (w"zI!  
int i=stack[top--]; O{SU,"!y  
63-`3R?;  
pivotIndex=(i+j)/2; ^N0hc!$  
pivot=data[pivotIndex]; WpSdukXY{  
]!h%Jlu  
SortUtil.swap(data,pivotIndex,j); 3lA<{m;V  
4/Ok/I  
file://partition %# J8cB  
l=i-1; kpK: @  
r=j; 8oN4!#:  
do{ K6!`b( v#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BC!l)2  
SortUtil.swap(data,l,r); f85j?Jm  
} 1`B5pcuI  
while(l SortUtil.swap(data,l,r); z\fD}`^8  
SortUtil.swap(data,l,j); <[l2]"Q  
M*aE)D '  
if((l-i)>THRESHOLD){ .^P^lQT]>  
stack[++top]=i; H-7*)D  
stack[++top]=l-1; 1sn!!  
} v_)cp9d]  
if((j-l)>THRESHOLD){ ^>[DG]g  
stack[++top]=l+1; q& 4Z.(  
stack[++top]=j; t(Iy[-  
} !>9*$E |  
*"j_3vAx  
} V,|9$A;  
file://new InsertSort().sort(data); 9I30ULm  
insertSort(data); kc/h]B  
} .R biF  
/** M8S4D&vpD4  
* @param data fs>0{  
*/ lKH"PH7*_w  
private void insertSort(int[] data) { Gash3}+  
int temp; N|7<*\o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HmRwh  
} OXA_E/F  
} hMhD(X  
} 3)42EM'9(  
?CL1^N%  
} i!YZF$|  
sOU_j4M{  
归并排序: R0*DfJS:Z  
@YWfq$23  
package org.rut.util.algorithm.support; otX#}} +  
MH{vFA4:,  
import org.rut.util.algorithm.SortUtil; mj5A*%"W  
 6~$ <  
/** I%{^i d@  
* @author treeroot YfF&: "-NU  
* @since 2006-2-2 Z0`?  
* @version 1.0 S,Zjol%p  
*/ {vA;#6B|  
public class MergeSort implements SortUtil.Sort{ *M- .Vor?R  
] p+t>'s  
/* (non-Javadoc) >Z<ym|(T*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |mY<TWoX  
*/ Nk}Hvg*(  
public void sort(int[] data) { '#u2q=n4*  
int[] temp=new int[data.length]; bis/Nfr]  
mergeSort(data,temp,0,data.length-1); cr,o<  
} E3NYUHfZ  
(IJf2  
private void mergeSort(int[] data,int[] temp,int l,int r){ f&^Ea-c  
int mid=(l+r)/2; n'4D;4  
if(l==r) return ; |[k6X=5  
mergeSort(data,temp,l,mid); X]  Tb4  
mergeSort(data,temp,mid+1,r); ;hd> v&u#  
for(int i=l;i<=r;i++){ % k$+t  
temp=data; t$Irr*  
} B>a`mFM  
int i1=l; .7E-  
int i2=mid+1; >{Lfrc1  
for(int cur=l;cur<=r;cur++){ sY1@ch"  
if(i1==mid+1) ;M4N=G Wd4  
data[cur]=temp[i2++]; y^M'&@F  
else if(i2>r) 0FTiTrTn  
data[cur]=temp[i1++]; y~ ^>my7G  
else if(temp[i1] data[cur]=temp[i1++]; VFA1p)n  
else s/Q}fW$ex  
data[cur]=temp[i2++]; >2$Ehw:K^  
} [HQ17  
} y<3v/ ,Y  
G/<{:R"  
} /:awPYGH<1  
iP' }eQn]c  
改进后的归并排序: {fIH9+v  
ua7I K~8l  
package org.rut.util.algorithm.support; ~}4H=[Zu  
aoF>{Z4&B  
import org.rut.util.algorithm.SortUtil; 8Bhot,u'T  
s8eiq`6\H}  
/** 36Wuc@<H  
* @author treeroot F)DL/';  
* @since 2006-2-2 @J" }~Y  
* @version 1.0 UxzwgVT  
*/ #Kn7 xn[  
public class ImprovedMergeSort implements SortUtil.Sort { bmT  J  
)#*c|.  
private static final int THRESHOLD = 10; H~Q UN  
"lN<v=  
/* :VLuI  
* (non-Javadoc) rD$7;  
* mjs*Z{_F^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i Cv &<C@  
*/ 66Hu<3X P  
public void sort(int[] data) { >|z=-hqPK  
int[] temp=new int[data.length]; #/1A:ig  
mergeSort(data,temp,0,data.length-1); pR\etXeLd  
} \I'A:~b)L  
#+ n &  
private void mergeSort(int[] data, int[] temp, int l, int r) { }$ AC0  
int i, j, k; X4%*&L  
int mid = (l + r) / 2; ;y5cs;s  
if (l == r) I X\&lV  
return; ?>lmLz!e  
if ((mid - l) >= THRESHOLD) `I m;@_J  
mergeSort(data, temp, l, mid); <;U"D.'  
else cpE&Fba}"  
insertSort(data, l, mid - l + 1); wQ [2yq  
if ((r - mid) > THRESHOLD) !lu$WJ{M  
mergeSort(data, temp, mid + 1, r); Z|wZyt$$  
else *+@/:$|U  
insertSort(data, mid + 1, r - mid); WWE?U-o  
vO4 &ZQ>6  
for (i = l; i <= mid; i++) { kO2im+y  
temp = data; WQ"ZQ  
} #NL1N_B  
for (j = 1; j <= r - mid; j++) { EidIi"sr  
temp[r - j + 1] = data[j + mid]; DlIfr6F  
} Pu axS  
int a = temp[l]; _f34p:B%s  
int b = temp[r]; |ZRl.C/e  
for (i = l, j = r, k = l; k <= r; k++) { hj4A&`2  
if (a < b) { 9 lA YCsX  
data[k] = temp[i++]; ?hDEFW9&^x  
a = temp; Ud{-H_m+  
} else { luC',QJB  
data[k] = temp[j--]; 8,kbGlSD  
b = temp[j]; 7g&_`(  
} OQ[>s(`*{  
} (<%i8xu 2  
} SAo"+%  
Y{p *$  
/** AA05wpu8  
* @param data ~r=TVHjqi  
* @param l |: nuT$(  
* @param i :;??!V  
*/ >Zmpsa+  
private void insertSort(int[] data, int start, int len) { 1 !\pwd@{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UdLC]  
} G.oaDGy  
} E,C<ox4e  
} eMh:T@SN  
} cwpDad[Kx  
5~.\rcr%  
堆排序: *]Vx=7 D  
$X\BO&  
package org.rut.util.algorithm.support; Ke 'bH  
C2Y&qX,  
import org.rut.util.algorithm.SortUtil; Wm3H6o*  
EB> RY+\  
/** MuO>O97  
* @author treeroot q2/Vt0aYx  
* @since 2006-2-2  ^5 ;Y  
* @version 1.0 u\t ;  
*/ C($`'~b  
public class HeapSort implements SortUtil.Sort{ wbr"z7}  
E+7S:B  
/* (non-Javadoc) /H3,v8J@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9qqEr~  
*/ jpBE| Nm  
public void sort(int[] data) { 4|:{apH  
MaxHeap h=new MaxHeap(); 8-SVgo(  
h.init(data); 9)4N2=  
for(int i=0;i h.remove(); b]Z@zS<8  
System.arraycopy(h.queue,1,data,0,data.length); uHf~KYL  
} aMz%H|/$  
{s`1+6_&Vz  
private static class MaxHeap{ @cjhri|vH  
*`l>1)B>  
void init(int[] data){ &Vonu*  
this.queue=new int[data.length+1]; {b#c0>.8-  
for(int i=0;i queue[++size]=data; 8^4X/n  
fixUp(size); jN*A"m  
} (U7%Z<  
} h_A}i2/{  
LRbevpZ,  
private int size=0; 2%@j<yS  
uF^+}Y ZT  
private int[] queue; Cch1"j<k$  
s V77WF  
public int get() { XhIgzaGVu  
return queue[1]; ^ePSI|EW  
} 0kiW629o  
Rw. Uz&  
public void remove() { L)w& f  
SortUtil.swap(queue,1,size--); ~F' $p  
fixDown(1); \!YPht  
} nFB;!r  
file://fixdown -D(Ubk Pw  
private void fixDown(int k) { FlkAo]  
int j; J'7){C"G$  
while ((j = k << 1) <= size) { Gwvs~jN  
if (j < size %26amp;%26amp; queue[j] j++; c/x(v=LW  
if (queue[k]>queue[j]) file://不用交换 $[|8bE  
break; "0/OpT7h7  
SortUtil.swap(queue,j,k); [tBIABr  
k = j; tDi=T]-bt  
} %9zcc)cP  
} H}}t )H  
private void fixUp(int k) { #Xn#e  
while (k > 1) { x?j&Jn_@w  
int j = k >> 1; , g6.d#c  
if (queue[j]>queue[k]) [J*)r8ys  
break; AN.`tv  
SortUtil.swap(queue,j,k); 2ag]p  
k = j; [M;P:@  
} Ot,sMRk'  
} riBT5  
[I^SKvM  
} 'Lm.`U  
}'Z(J)Bg  
} UPgZj\t%{  
G A7  
SortUtil: VvltVYOZA  
B\("08x  
package org.rut.util.algorithm; dj]sr!q+  
Nf;vUYP  
import org.rut.util.algorithm.support.BubbleSort; TvQAy/Y0  
import org.rut.util.algorithm.support.HeapSort; <"\K|2Sg  
import org.rut.util.algorithm.support.ImprovedMergeSort; APLu?wy7s5  
import org.rut.util.algorithm.support.ImprovedQuickSort; Qe4  
import org.rut.util.algorithm.support.InsertSort; RCmPZ  
import org.rut.util.algorithm.support.MergeSort; wZOO#&X#r  
import org.rut.util.algorithm.support.QuickSort; 10 p+e_@  
import org.rut.util.algorithm.support.SelectionSort; |]I?^:I  
import org.rut.util.algorithm.support.ShellSort; Ik}*7D  
 !c*^:0  
/** T}\U:@b  
* @author treeroot &O%Kj8)  
* @since 2006-2-2 ;nC+K z:  
* @version 1.0 J%[K;WjrZJ  
*/ WUHx0I  
public class SortUtil { c/hml4  
public final static int INSERT = 1; kQH!`-n:T  
public final static int BUBBLE = 2; .<j8>1  
public final static int SELECTION = 3; I5bi^!i  
public final static int SHELL = 4; 0CDTj,eK  
public final static int QUICK = 5; t>25IJG  
public final static int IMPROVED_QUICK = 6; B@s\>QMm  
public final static int MERGE = 7; <&x_e-;b'  
public final static int IMPROVED_MERGE = 8; QOP*vH >J  
public final static int HEAP = 9; tq*Q|9j7VG  
_@@S,(MA  
public static void sort(int[] data) { n@%'Nbc>b  
sort(data, IMPROVED_QUICK); 8l}|.Q#--  
} v)pdm\P  
private static String[] name={ ae^xuM?7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" c{852R  
}; Y8AU<M  
%V+,#  
private static Sort[] impl=new Sort[]{ k?";$C}#  
new InsertSort(), -(59F  
new BubbleSort(), j"NqNv  
new SelectionSort(), ^|x{E20  
new ShellSort(), bqe;) A7  
new QuickSort(), lLg23k{'  
new ImprovedQuickSort(), s@ q54  
new MergeSort(), zcNV<tx  
new ImprovedMergeSort(), (ncfR  
new HeapSort() T2Vj &EA@  
}; )kd)v4#  
%r>vZ/>a  
public static String toString(int algorithm){ @TH \hr]  
return name[algorithm-1]; M)LdGN?$  
} MDB}G '  
W5x]bl#  
public static void sort(int[] data, int algorithm) { UGN. ]#"#  
impl[algorithm-1].sort(data); jAJkCCG  
} iD]!PaFD`  
'kC$R;#\7  
public static interface Sort { b#]in0MT?@  
public void sort(int[] data); B;-oa;m:E=  
} \u)(+t{  
("TI~  
public static void swap(int[] data, int i, int j) { |FNP~5v  
int temp = data; ;N j5NB7  
data = data[j]; 2+^#<Uok  
data[j] = temp; &=/.$i-w$  
} 5(F!* 6i>  
} kPxEGuL'  
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