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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。 c8uaZvfW  
插入排序: B/a gW  
cY?|RXNmZ  
package org.rut.util.algorithm.support; p6DI7<C<H  
};Q}C0E  
import org.rut.util.algorithm.SortUtil; cMT7Bd  
/** +Mo4g2W  
* @author treeroot =H{<}>W'  
* @since 2006-2-2 7`|'Om?'  
* @version 1.0 |Z:yd}d  
*/ MBWoPK  
public class InsertSort implements SortUtil.Sort{ { DYY9MG8  
S?688  
/* (non-Javadoc) 5CI {&E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h FU8iB`Q  
*/ }-3 VK%  
public void sort(int[] data) { Ip t;NlR  
int temp; 1eI*.pt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j.=:S;  
} 9Yt|Wj  
} '2lV(>"  
} pDS[ecx  
iw)gNQ%z4  
} !>48`o ^  
X!KX4H  
冒泡排序: Cl0kR3Y  
MCE@EFD`\  
package org.rut.util.algorithm.support; ?_eLrz4>L^  
FB6Lz5:Vf  
import org.rut.util.algorithm.SortUtil; 9qap#A  
fFJ7Y+^  
/** LUQ.=:mBR  
* @author treeroot f^pBXz9&=  
* @since 2006-2-2 um9&f~M  
* @version 1.0 mERkC,$  
*/ Cy-p1s  
public class BubbleSort implements SortUtil.Sort{ )1At/mr  
a6 Vfd&  
/* (non-Javadoc) 9PB%v.t5 y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9vRLM*9|  
*/ c.>f,vtcn  
public void sort(int[] data) { >Na.C(DZ  
int temp; K|%Am4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ /\1'.GR  
if(data[j] SortUtil.swap(data,j,j-1); SdnnXEB7  
} )Jt. Z^J<  
} mm>l:M TF  
} GCl *x:  
} Q>5f@aN  
AXbb-GK  
} h0F=5| B  
{ j_-iF  
选择排序: ]xRR/S4  
i!YfR]"}  
package org.rut.util.algorithm.support; _hY6 NMw  
?o(284sV3  
import org.rut.util.algorithm.SortUtil; LATizu  
"`M~=RiI  
/** Zh8\B)0unn  
* @author treeroot `+w= p7ET  
* @since 2006-2-2 k]ZE j/y~  
* @version 1.0 ;1&"]N%  
*/ L2@:?WW[  
public class SelectionSort implements SortUtil.Sort { L&6^(Bn   
b ri[&=  
/* i*$+>3Q-  
* (non-Javadoc) +3o vO$g  
* 2/3yW.C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >/-H!jUF]  
*/ .=:f]fs  
public void sort(int[] data) { W3~u J(  
int temp; jU-LT8y:  
for (int i = 0; i < data.length; i++) { 3I 0pHP5  
int lowIndex = i; +.Vh<:?  
for (int j = data.length - 1; j > i; j--) { <y7{bk~i  
if (data[j] < data[lowIndex]) { db 99S   
lowIndex = j; 2S7 BzZ/  
} x<I[?GT=  
} 3$"V,_TBZ  
SortUtil.swap(data,i,lowIndex); j&Hui>~  
} }[leUYi`  
} g;Ugr8  
//NV_^$y  
} > %KEMlKZ  
"E+;O,N-  
Shell排序: [pU(z'caS  
-W!M:8  
package org.rut.util.algorithm.support; 4}C \N  
L9)gN.#  
import org.rut.util.algorithm.SortUtil; y],op G6  
z#gebr~_\  
/** {N]WVp*R  
* @author treeroot ;BuMzG:tmZ  
* @since 2006-2-2 &en2t=a  
* @version 1.0 |kZ!-?9Z  
*/ gq?O}gVD  
public class ShellSort implements SortUtil.Sort{ )VQ[}iT  
g7323m1=  
/* (non-Javadoc) 0j8fU7~6S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KKpM=MZ  
*/ qG,h 1  
public void sort(int[] data) { TDw~sxtv&  
for(int i=data.length/2;i>2;i/=2){ -aBhN~  
for(int j=0;j insertSort(data,j,i); r )~?5d  
} o|>=< l  
} qGq]E `O  
insertSort(data,0,1); A< .5=E,/  
} L:C/PnIV  
d"5_x]Z;  
/**  IZrcn  
* @param data `XF[A8@h  
* @param j XR",.3LD  
* @param i v RtERFL  
*/ yW?-Z[  
private void insertSort(int[] data, int start, int inc) { MgP|'H3\  
int temp; P, ZQ*Ju  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); oaha5aWH  
} >3&  
} O-[YU%K3?  
} F3V:B.C  
F4~ OsgZ'N  
} cAN8'S(s1  
n',7=~  
快速排序: .WSn Y71  
41/civX>V  
package org.rut.util.algorithm.support; Tp@Yn  
Q1Qw45$  
import org.rut.util.algorithm.SortUtil; g@x72$j  
vE`;1UA}  
/** 0Gj/yra9MO  
* @author treeroot a1_ N~4r`  
* @since 2006-2-2 N5l`Rq^K  
* @version 1.0 ,X|FyO(p  
*/ @[joM*U  
public class QuickSort implements SortUtil.Sort{ rmBzLZ}  
47Vt8oyh%  
/* (non-Javadoc) '`k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M &-p  
*/ K?M~x&Q  
public void sort(int[] data) { !^Ay !  
quickSort(data,0,data.length-1); t ^>07#z  
} u gRyUny  
private void quickSort(int[] data,int i,int j){ >"UXY)  
int pivotIndex=(i+j)/2; -N/n|{+F  
file://swap wx-&(f   
SortUtil.swap(data,pivotIndex,j); +)h# !/  
\_u{ EB'b  
int k=partition(data,i-1,j,data[j]); rhzI*nwOT  
SortUtil.swap(data,k,j); N6kMl  
if((k-i)>1) quickSort(data,i,k-1); JK,^:tgm  
if((j-k)>1) quickSort(data,k+1,j); ~i?Jg/qcxN  
f4\F:YT  
} Q(x=;wf5r  
/** i.^UkN{  
* @param data [qxpu{  
* @param i GZ<@#~1%\  
* @param j p-"wY?q  
* @return "r;cH53  
*/ C% z9Q  
private int partition(int[] data, int l, int r,int pivot) { qm#?DSLap  
do{ j/O9LygB  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ^{J^oZ'%~  
SortUtil.swap(data,l,r); <NDV 5P  
} 44n41.Q]  
while(l SortUtil.swap(data,l,r); U1 3Lsky%  
return l; !1S!)#  
} Y#):1C1  
 })!-  
} 9(X~  
!<h9XccN  
改进后的快速排序: f dJg7r*  
LDw.2E  
package org.rut.util.algorithm.support; zZ9Ei-Q  
Yrf?|,  
import org.rut.util.algorithm.SortUtil; 4]zn,g?&  
902A,*qq  
/** r#j3O}(n  
* @author treeroot cMtUb  
* @since 2006-2-2 W|;`R{<I%  
* @version 1.0 oT:w GBW  
*/ 1IgTJ" \  
public class ImprovedQuickSort implements SortUtil.Sort { CNj |vYj  
8>|4iT  
private static int MAX_STACK_SIZE=4096; 8DD1wK\U~  
private static int THRESHOLD=10; #6y fIvap  
/* (non-Javadoc) _Q\rZ l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9JMf T]  
*/ * XDe:A  
public void sort(int[] data) { i+Ne.h  
int[] stack=new int[MAX_STACK_SIZE]; q}'<[Wg  
W#d'SL#5  
int top=-1; zB7 ^L^Y  
int pivot; %;_EWs/z8  
int pivotIndex,l,r; bA6^R If?  
x`p908S^  
stack[++top]=0; -NzOX"V]3  
stack[++top]=data.length-1; !}`[s2ji  
V LeYO5'L  
while(top>0){ }!*|VdL0  
int j=stack[top--]; nR Hl Hu  
int i=stack[top--]; &f A1kG%  
lZ"C~B}9:I  
pivotIndex=(i+j)/2; '&|%^9O/"  
pivot=data[pivotIndex]; $^e_4]k  
p&xj7qwp@F  
SortUtil.swap(data,pivotIndex,j); SRHD"r^@  
/a$Zzs&xs  
file://partition 1)xj 'n  
l=i-1; /ml+b8@  
r=j; K)Ya%%6[U#  
do{ HA$7Q~{N-t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RU.MJ kYQ5  
SortUtil.swap(data,l,r); 2 =>3B  
} 4;jAdWj3  
while(l SortUtil.swap(data,l,r); +U1fa9NSn  
SortUtil.swap(data,l,j); t=fAG,k5  
/lHs]) ,  
if((l-i)>THRESHOLD){ <g&GIFE,  
stack[++top]=i; 8SiWAOQAL  
stack[++top]=l-1; 5M>SrZH  
} PJKxh%J  
if((j-l)>THRESHOLD){ tOj5b 7'ui  
stack[++top]=l+1; m,4'@jg0  
stack[++top]=j; uW(Ngcpr  
} L]X Lv9J0  
][\ uH|  
} {j[*:l0Ui  
file://new InsertSort().sort(data); 1 j|XC  
insertSort(data); 4&L,QSJ V  
} A6;[r #C  
/** ]3U|K .G  
* @param data  pXNH  
*/ aO:A pOAO  
private void insertSort(int[] data) { xy)W_~Mk  
int temp; +miL naO~L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); '7]9q#{su  
} 5"x1Pln  
} obX2/   
} ZE/Aj/7Qy  
g1UQ6Oa  
} ?a?] LIE8  
aXbj pb+  
归并排序: hg^k lQD  
c)QOgXv  
package org.rut.util.algorithm.support; .?F`H[^)^u  
Hc0V4NHCaL  
import org.rut.util.algorithm.SortUtil; x;7p75Wm  
esv<b>`R  
/** `1 Tg8  
* @author treeroot 5B{Eg?  
* @since 2006-2-2 ,+5 !1>\  
* @version 1.0 &4p~i Z  
*/ ?G5,x  
public class MergeSort implements SortUtil.Sort{ gFM~M(  
>ZAn2s  
/* (non-Javadoc) ' b,zE[Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T!pHT'J  
*/ M%eTNsbNm  
public void sort(int[] data) { lzz68cT  
int[] temp=new int[data.length]; HM\}C.u  
mergeSort(data,temp,0,data.length-1); [}l 1`>  
} <U /r U9O  
rqM_#[Y?  
private void mergeSort(int[] data,int[] temp,int l,int r){ !6+V  
int mid=(l+r)/2; /jU4mPb;\D  
if(l==r) return ; - :x6X$=  
mergeSort(data,temp,l,mid); I\82_t8  
mergeSort(data,temp,mid+1,r); ;4vx+>-  
for(int i=l;i<=r;i++){ (>om.FM  
temp=data; Nm0|U.<  
} ;Ac!"_N?7  
int i1=l; zL+M-2hV  
int i2=mid+1; jdD`C`w|,  
for(int cur=l;cur<=r;cur++){ |y]8gL^  
if(i1==mid+1) AIwp2Fz  
data[cur]=temp[i2++]; VB+y9$Y'  
else if(i2>r) 1i|5ii*vc  
data[cur]=temp[i1++]; V#PT.,Xa.  
else if(temp[i1] data[cur]=temp[i1++]; |uA /72  
else B{Lzgw u;  
data[cur]=temp[i2++]; L<N=,~  
} $I3}% '`+  
} QJH~YV\%  
IkLcL8P^  
} @%As>X<3t  
e({-. ra  
改进后的归并排序: =NL(L  
3{- 8n/4 k  
package org.rut.util.algorithm.support;  9\R+g5  
DB+.<  
import org.rut.util.algorithm.SortUtil; yu'@gg(  
O/f+B}W  
/** ?CuwA-j  
* @author treeroot OxVe}Fym  
* @since 2006-2-2 2MKB (;k  
* @version 1.0 9C1\?)"D^e  
*/ l9$"zEC  
public class ImprovedMergeSort implements SortUtil.Sort { !2g*=oY  
Y{dj~}mM+  
private static final int THRESHOLD = 10; )!D,;,aQ  
~w$ ^`e!]  
/* U#n1N7P|$F  
* (non-Javadoc) @yn1#E,  
* ]A:G>K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5SHZRF(. 2  
*/ &;%LTF@I,  
public void sort(int[] data) { E"Y[k8-:2/  
int[] temp=new int[data.length]; Ivc/g,  
mergeSort(data,temp,0,data.length-1); zO)3MC7l*  
} )L7h:%h#  
HS 1zA  
private void mergeSort(int[] data, int[] temp, int l, int r) { +@yTcz  
int i, j, k; +zsB~Vz  
int mid = (l + r) / 2; e:WKb9nT  
if (l == r) Ne2eBmY}(  
return; n]WVT@  
if ((mid - l) >= THRESHOLD) vF$sVu|B  
mergeSort(data, temp, l, mid); E$E #c8I:  
else fUS1`  
insertSort(data, l, mid - l + 1); [`|gj  
if ((r - mid) > THRESHOLD) q!8aYw+c  
mergeSort(data, temp, mid + 1, r); 7a<:\F}E0  
else w:[\G%yQ  
insertSort(data, mid + 1, r - mid); FO xZkU\e=  
l>jNBxB|/A  
for (i = l; i <= mid; i++) { 4Y}{?]>pu  
temp = data; Z[zRZ2'i5  
} >iI-Cs7TD  
for (j = 1; j <= r - mid; j++) { $2pkh%  
temp[r - j + 1] = data[j + mid]; @7,k0H9Moa  
} rW0-XLbL5H  
int a = temp[l]; |jTRIMj%,_  
int b = temp[r]; : ]~G9]R`  
for (i = l, j = r, k = l; k <= r; k++) { ~~3 BV,  
if (a < b) { xEqr3(  
data[k] = temp[i++]; R"qxT.P(  
a = temp; `"qSr%|  
} else { XlU`jv+  
data[k] = temp[j--]; W v!%'IB  
b = temp[j]; ]*vv=@"`e  
} 4xD`Z_U  
} :5BVVa0oR  
} a}/ A]mu  
8{4jlL;"`?  
/** }:hN}*H  
* @param data /}$D&KwYg  
* @param l v,A8Mk2s#  
* @param i PFPZ]XI%F  
*/ J`d;I#R%c  
private void insertSort(int[] data, int start, int len) { ._US8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +I r  
} YS+|n%?  
} zqa7!ky  
} FWDAG$K@0  
} v<t r1cUT  
jkfc=O6^  
堆排序: RD0=\!w*5  
8(""ui 8  
package org.rut.util.algorithm.support; pt=H?{06  
QL`Hb p  
import org.rut.util.algorithm.SortUtil; q jmlwVw  
*VgiJ  
/** C0%yGLh&  
* @author treeroot SK;c D>)  
* @since 2006-2-2 qv.s-@l8  
* @version 1.0 3DS&-rN  
*/ Iju9#b6  
public class HeapSort implements SortUtil.Sort{ F!&$Z .  
:"I!$_E'  
/* (non-Javadoc) yJ?S7+b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q=`i  
*/ |kh7F0';"  
public void sort(int[] data) { 0 pPSg9  
MaxHeap h=new MaxHeap(); :2(U3~3:  
h.init(data); 8zzY;3^h;  
for(int i=0;i h.remove(); `(o:;<&3  
System.arraycopy(h.queue,1,data,0,data.length); -]k vM  
} 6#(==}Sm+  
V(3=j)#  
private static class MaxHeap{ ~"nF$DB  
6-J%Z%yT #  
void init(int[] data){ 6g&Ev'  
this.queue=new int[data.length+1]; 'Uu!K!  
for(int i=0;i queue[++size]=data; )4e?-?bK!  
fixUp(size); AS'%Md&I  
} Ws*UhJY<GS  
} =a^}]k}  
:B  9>  
private int size=0; p;n"zr8U  
2v?fbrC5c  
private int[] queue;  {Bw  
JK'FJ}Z4  
public int get() { l~Rd\.O  
return queue[1]; yr/G1?k%ML  
} X)b@ia'"Wp  
7B{LRm6;Vu  
public void remove() { d=d*:<Zx  
SortUtil.swap(queue,1,size--); 7oV$TAAf  
fixDown(1); lgQ"K(zY  
} chA7R'+LA  
file://fixdown Xli$4 uL   
private void fixDown(int k) { a|eHo%Qt  
int j; W!t=9i  
while ((j = k << 1) <= size) { ble[@VW|  
if (j < size %26amp;%26amp; queue[j] j++; +FJ+,|i  
if (queue[k]>queue[j]) file://不用交换 y7~y@2  
break; o&ETs)n|  
SortUtil.swap(queue,j,k); TQ5*z,CkS  
k = j; ,8 G6q_ud  
} T7~H|%  
} @L?KcGD  
private void fixUp(int k) { '8w>=9Xl  
while (k > 1) { AX;!-|bW  
int j = k >> 1; I>JBGR`j  
if (queue[j]>queue[k]) F<TIZ^gFP  
break; #ADm^UT^  
SortUtil.swap(queue,j,k); ohna1a^  
k = j; qsWy <yL+  
} 75^AO>gt   
} 5D eo}(3  
ez<V  
} 0TWd.+  
g5:?O,?  
} 'S%H"W\  
{hFH6]TA  
SortUtil: $Da?)Hz'F  
L Q0e@5  
package org.rut.util.algorithm; L Iz<fB  
7>lM^ :A  
import org.rut.util.algorithm.support.BubbleSort; .F},Z[a&  
import org.rut.util.algorithm.support.HeapSort; [h63*&  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z7XFG&@6  
import org.rut.util.algorithm.support.ImprovedQuickSort; T.}Y&,n$$5  
import org.rut.util.algorithm.support.InsertSort; @ Fkhida  
import org.rut.util.algorithm.support.MergeSort; rld8hFj  
import org.rut.util.algorithm.support.QuickSort; Z\3~7Ek2m  
import org.rut.util.algorithm.support.SelectionSort; {$g3R@f^~  
import org.rut.util.algorithm.support.ShellSort; AVi&cvhs  
nvQTJ4,,  
/** )$ M2+_c  
* @author treeroot LhRd0  
* @since 2006-2-2 Swr4De_5  
* @version 1.0 QQJf;p7  
*/ -}3nIk<N  
public class SortUtil { h:RP/ 0E  
public final static int INSERT = 1; }i{A4f `  
public final static int BUBBLE = 2; TJCE6QG  
public final static int SELECTION = 3; LUdXAi"f  
public final static int SHELL = 4; !_P&SmK3  
public final static int QUICK = 5; RdBIbm  
public final static int IMPROVED_QUICK = 6; u4j"U6"]M  
public final static int MERGE = 7; Y>6N2&Q  
public final static int IMPROVED_MERGE = 8; )2a)$qx;  
public final static int HEAP = 9; pX+4B=*  
S$ffTdRz  
public static void sort(int[] data) { :V1j*)  
sort(data, IMPROVED_QUICK); tI)|y?q  
} _n1[(I  
private static String[] name={ "VDMO^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Al=ByX@  
}; B"8jEYT5  
t)1`^W}  
private static Sort[] impl=new Sort[]{ 1yVhO2`7]  
new InsertSort(), w2db=9  
new BubbleSort(), j#0JD!Vr  
new SelectionSort(), F1A40h7R$Y  
new ShellSort(), 1ktxG1"1  
new QuickSort(),  TJ1h[  
new ImprovedQuickSort(), Wy%FF\D.Y  
new MergeSort(), 6$[7hlE  
new ImprovedMergeSort(), U*b7 Pxq;  
new HeapSort() Z?xRSi2~7  
}; IVY)pS"pR"  
@{W"mc+  
public static String toString(int algorithm){ R0%M9;>1  
return name[algorithm-1]; u"4 B5D  
} Evd|_W-  
cPv(VjS1;  
public static void sort(int[] data, int algorithm) { bf|ePGW?  
impl[algorithm-1].sort(data); 3~VV2O  
} @S=9@3m{w;  
K`2(Q  
public static interface Sort { yM~bUmSg  
public void sort(int[] data); FWA?mde  
} $1g1Bn  
C!|LGzs0  
public static void swap(int[] data, int i, int j) { z;!"i~fFK  
int temp = data; rtfRA<  
data = data[j]; 2,wwI<=E'  
data[j] = temp; N<1+aL\  
} <Se9 aD  
} 2?SbkU/3|P  
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