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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。 0dA'f0Uy\X  
插入排序: Hzh?w!Ow  
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package org.rut.util.algorithm.support; z/(^E8F  
j-@3jFu  
import org.rut.util.algorithm.SortUtil; fEF1&&8^  
/** B uV@w-|  
* @author treeroot @13vn x  
* @since 2006-2-2 ;QQLYT  
* @version 1.0 .~qu,q7k~  
*/ Zoh[tO   
public class InsertSort implements SortUtil.Sort{ k2o98bK&;  
Q.Tn"rE|  
/* (non-Javadoc) I|]~f[xI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NL%5'8F>,  
*/ FP=%e]vJ  
public void sort(int[] data) { sA=WU(4^  
int temp; =b2/g [  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #Q}`kFB`  
} 4% )I[-sH  
} )J#7:s]eo  
} #x! h BS!  
 2bwf(  
} 'Y{fah  
fF37P8Ir  
冒泡排序: y}dop1zp  
< TJzp  
package org.rut.util.algorithm.support; ],9%QE  
Xc -'&"  
import org.rut.util.algorithm.SortUtil; FB3C'!'<)  
oHH-joYnn  
/** jFfuT9oId  
* @author treeroot )e`$'y@L$  
* @since 2006-2-2 Xl^=&!S>me  
* @version 1.0 raRb K8CQ  
*/ WrBiAh,  
public class BubbleSort implements SortUtil.Sort{ hOjy$Z  
[`^5Zb  
/* (non-Javadoc) X8aNl"x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X@JrfvKv[d  
*/ n 5h4]u  
public void sort(int[] data) { IF-g %  
int temp; ~LqjWU  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +Zgh[a  
if(data[j] SortUtil.swap(data,j,j-1); ]G m"U!h*  
} 70IBE[T&  
} jA9&hbQuL  
} j}~3m$  
} z 4 4(  
k4Ed7T-  
} G*.}EoA  
J_) .Hd  
选择排序: CYD&#+o  
^ 'W<|  
package org.rut.util.algorithm.support; ,kiyx h^  
4 0as7.q  
import org.rut.util.algorithm.SortUtil; c!n\?lB  
z&x ^ Dl  
/** fHK`u'  
* @author treeroot {akSK  
* @since 2006-2-2 )xKZ)SxV  
* @version 1.0 '*K}$+l  
*/ >drG,v0qh  
public class SelectionSort implements SortUtil.Sort { ! *Snx  
#w_cos[I  
/* a'3|EWS ?  
* (non-Javadoc) zF'LbQz0[  
* x z5 V.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6@ B_3y  
*/ dV_ClH &)  
public void sort(int[] data) { ECq(i(  
int temp; _J' _9M?>  
for (int i = 0; i < data.length; i++) { Vu6$84>-,  
int lowIndex = i; A{3VTe4TV  
for (int j = data.length - 1; j > i; j--) { 3.[ fTrzJ  
if (data[j] < data[lowIndex]) { J0xV\O !e  
lowIndex = j; )?es3Ehqq  
} jhU'UAn  
} Vqr#%. N  
SortUtil.swap(data,i,lowIndex); `x b\)  
} r57CyO  
} k'H+l]=  
/K!&4mK  
} ,ddoII  
;h|zNx0  
Shell排序: !h\>[O  
6k569c{7  
package org.rut.util.algorithm.support; v D"4aw  
RRXnj#<g  
import org.rut.util.algorithm.SortUtil; \9r1JP0  
~=xiMB;oH  
/** W@"s~I6  
* @author treeroot Fog4m=b`g  
* @since 2006-2-2 Y8$Y]2  
* @version 1.0 k&TZ   
*/ q6R``  
public class ShellSort implements SortUtil.Sort{ :!',o]"4,k  
_c[Bjip  
/* (non-Javadoc) gzV&S5A{_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t(d$v_*y51  
*/ g7Xjo )  
public void sort(int[] data) { DcjF $E  
for(int i=data.length/2;i>2;i/=2){ |AgdD  
for(int j=0;j insertSort(data,j,i); j%_{tB  
} ?%)G%2  
} ;^fGQ]`4  
insertSort(data,0,1); `;X~$uS  
} _SVIY@K|/  
hrT!S  
/** 'aj97b;lpG  
* @param data mI$<+S1!  
* @param j "#<P--E9  
* @param i #RfNk;kaA  
*/ cJp:0'd  
private void insertSort(int[] data, int start, int inc) { 2kG(\+\  
int temp; '+ %<\.$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G&2UXr3  
} q$#5>5&  
} E[IjeJB5  
} h\]D:S  
3u&>r-V6Fn  
} *?l-:bc]  
$C&y-Hnar  
快速排序: H]zi>;D  
6R`q{}.  
package org.rut.util.algorithm.support; B<V8:vOam  
KM'*+.I  
import org.rut.util.algorithm.SortUtil; VaV(+X  
|+-D@22 y  
/** *O5Ysk^|  
* @author treeroot |{STkV]  
* @since 2006-2-2 oSAO0h>0N  
* @version 1.0 @ OSSqH  
*/ wWh)yfPh8H  
public class QuickSort implements SortUtil.Sort{ 6!QY)H^j9,  
/"q wC  
/* (non-Javadoc) -a^%9 U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pUp&eH  
*/ T6Oah:50EM  
public void sort(int[] data) { B\<;e  
quickSort(data,0,data.length-1); {hP_"nN#  
} vOF"p4 ^3  
private void quickSort(int[] data,int i,int j){ V?yTJJ21X  
int pivotIndex=(i+j)/2; cPx] :sC  
file://swap s|cL mL[  
SortUtil.swap(data,pivotIndex,j); k'(d$;Jgr  
&"_5?7_N  
int k=partition(data,i-1,j,data[j]); {jK:hQX  
SortUtil.swap(data,k,j); c3L)!]kB  
if((k-i)>1) quickSort(data,i,k-1); aAT!$0H  
if((j-k)>1) quickSort(data,k+1,j); CC,f*I  
,\%qERk  
} 2kXa  
/** >14 x.c  
* @param data }{oZdO  
* @param i xJNV^u  
* @param j @Yu=65h  
* @return >GV(\In  
*/ )qq5WShMJ  
private int partition(int[] data, int l, int r,int pivot) { !e<D2><^  
do{ .+.'TY--  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8lNkY`P7s  
SortUtil.swap(data,l,r); 3EVAB0/$  
} U8||)  +  
while(l SortUtil.swap(data,l,r); VGe OoS  
return l; $\9M6k'  
} CogN1,GJ  
+N3f{-{"Yo  
} X~o6Xkg  
Rr%CP[bH  
改进后的快速排序: [$x&J6jF.  
K{vn[}  
package org.rut.util.algorithm.support; bJWPr  
L-,C5^  
import org.rut.util.algorithm.SortUtil; }Dc7'GZ  
w>TlM*3D/  
/** Y!1x,"O'H  
* @author treeroot llK7~uOC  
* @since 2006-2-2 H1fKe=$1  
* @version 1.0 cYeC7l "  
*/ N -z  
public class ImprovedQuickSort implements SortUtil.Sort { ~LG<Uu  
nS` :)#;  
private static int MAX_STACK_SIZE=4096; 'v~%rhq3  
private static int THRESHOLD=10; xG7/[ jG  
/* (non-Javadoc) 5Z<y||=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d#W>"Cqxqa  
*/ - ^f>=xa4J  
public void sort(int[] data) { |Nf90.dL  
int[] stack=new int[MAX_STACK_SIZE]; ?TLzOYJp  
lx H3a :gm  
int top=-1; [S:{$4&  
int pivot; zF7*T?3b"  
int pivotIndex,l,r; k^i\<@v  
qOD:+b  
stack[++top]=0; !zW22M  
stack[++top]=data.length-1; Lk>GEi|  
a49xf^{1"i  
while(top>0){ @ )2<$d  
int j=stack[top--]; "<Q,|Md  
int i=stack[top--]; >u0B ~9_E  
vIQu"J&fE  
pivotIndex=(i+j)/2; )wb&kug -  
pivot=data[pivotIndex]; <l`xP)] X  
_@/nc:)H  
SortUtil.swap(data,pivotIndex,j); I #bta  
J+:gIszsWT  
file://partition >s;>"]  
l=i-1; mE)I(< %  
r=j; /4 M~ 6LT`  
do{ vxt<}h5J/!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +#LD@)G  
SortUtil.swap(data,l,r); Q|] 9  
} mh :eUFe  
while(l SortUtil.swap(data,l,r); ^!j,d_)b!  
SortUtil.swap(data,l,j); ui!MQk+D9  
n]< >$  
if((l-i)>THRESHOLD){ ~6!TMVr  
stack[++top]=i; _Z0O]>KH  
stack[++top]=l-1; #[ TOe  
} ]7/6u.G7R  
if((j-l)>THRESHOLD){ mNDd>4%H_  
stack[++top]=l+1; CYH o~VIK  
stack[++top]=j; g54b}vzm  
} y yqya[-11  
H]<@\g*l@P  
} >J['so2Bf  
file://new InsertSort().sort(data); s+@`Z*B5  
insertSort(data); &~&nJr  
} ?(2^lH~6h  
/** Q G8X{'  
* @param data T@?uA*J  
*/ _@_w6Rh  
private void insertSort(int[] data) { 'g#EBy  
int temp; 7|Bg--G1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "b `R_gG9  
} (O`2$~mIM  
} ZmKxs^5S  
} Og E<bw  
vNIQ1x5Za  
} YCI- p p  
Pgo^$xn'6  
归并排序: V 3yt{3Or  
FI=]K8  
package org.rut.util.algorithm.support; (;T g1$  
o"M h wh  
import org.rut.util.algorithm.SortUtil; o4Hp|iK&0  
Uf`~0=w  
/** @";zM&  
* @author treeroot V'm4DR#M  
* @since 2006-2-2  }0f"SWO>  
* @version 1.0 s+7#TdhA  
*/ UR' P,  
public class MergeSort implements SortUtil.Sort{ rL3 f%L  
M # ) @!  
/* (non-Javadoc) .j l|? o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  X0&[cyP!  
*/ D%,AdR"m  
public void sort(int[] data) { fKQq]&~ H  
int[] temp=new int[data.length]; *)82iD  
mergeSort(data,temp,0,data.length-1); 1 2y+g5b  
} :J~sz)n4  
wu`P=-  
private void mergeSort(int[] data,int[] temp,int l,int r){ D\9-MXc1  
int mid=(l+r)/2; E5`KUMZkq  
if(l==r) return ; $9PscubM4  
mergeSort(data,temp,l,mid); gzd)7np B2  
mergeSort(data,temp,mid+1,r); W"&Y7("y  
for(int i=l;i<=r;i++){ ITr@;@}c]  
temp=data; kr{eC/Q"  
} J{qpGRQNa  
int i1=l; m)oGeD( !  
int i2=mid+1; G~FAChI8![  
for(int cur=l;cur<=r;cur++){ sUTfY|<7|  
if(i1==mid+1) *-lw2M9V  
data[cur]=temp[i2++]; "&{sE RYY  
else if(i2>r) /j(3 ~%]o4  
data[cur]=temp[i1++]; n04lTME  
else if(temp[i1] data[cur]=temp[i1++]; A.>L>uR  
else M~"93Q`f^  
data[cur]=temp[i2++]; ? ht;ZP  
} P(Wr[lH\y  
} x2@W,?oPm  
QsC6\Gt#  
}  _7P#?:h  
rFl6xM;F  
改进后的归并排序: PZE{- TM?W  
ZT1IN6;8W  
package org.rut.util.algorithm.support; , I^:xw_  
#a|.cm>6  
import org.rut.util.algorithm.SortUtil; '~;vp  
S :%SarhBD  
/** *fg|HH+i  
* @author treeroot BE LxaV,  
* @since 2006-2-2 SM1[)jZ-  
* @version 1.0 r]lPXj(`  
*/ 4!)=!sL ;  
public class ImprovedMergeSort implements SortUtil.Sort { 2oFbS%OV  
o5`LLVif5y  
private static final int THRESHOLD = 10; = k7}[!T  
TL*8h7.(  
/* oJ`cefcWo  
* (non-Javadoc) ]^c]*O[8  
* j c-$l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8AQ@?\Rc"2  
*/ =lG/A[66  
public void sort(int[] data) { {(j1#9+9  
int[] temp=new int[data.length]; ,[{Z_co  
mergeSort(data,temp,0,data.length-1); FdFN4{<QZ  
} |xX>AMZc)D  
zM+eb| >cr  
private void mergeSort(int[] data, int[] temp, int l, int r) { o'auCa,N  
int i, j, k; 4 /Q4sE~<  
int mid = (l + r) / 2; ed:[^#Lj  
if (l == r) nQ}$jOU &  
return; rUOl+p_47  
if ((mid - l) >= THRESHOLD)  *CS2ndp  
mergeSort(data, temp, l, mid); +204.Yj?D  
else MF]EX  
insertSort(data, l, mid - l + 1); ^mZeAW  
if ((r - mid) > THRESHOLD) H(,D5y`k1  
mergeSort(data, temp, mid + 1, r); V3t;V-Lkt  
else F* h\#?  
insertSort(data, mid + 1, r - mid); 9?L,DThQ  
9Atnnx]n  
for (i = l; i <= mid; i++) { NR|t~C+  
temp = data; O=2SDuBZ  
} l %M0^d6M  
for (j = 1; j <= r - mid; j++) { h.WvPZ2U  
temp[r - j + 1] = data[j + mid]; /hksESiU  
} Z(0sMOaX  
int a = temp[l]; GiGXV @dq  
int b = temp[r]; .]D7Il  
for (i = l, j = r, k = l; k <= r; k++) { #Rx|oSc}  
if (a < b) { iwS55o  
data[k] = temp[i++]; TeXt'G=M  
a = temp; /lqVMlz\77  
} else { n,vs(ZL:  
data[k] = temp[j--]; ?X5Y8n]y\h  
b = temp[j]; }=T=Z#OgH  
} `iT{H]po  
} v[J"/:]  
} Yv ZcG3@c3  
C]'ru  
/** I?Fv!5p  
* @param data yG..B  
* @param l <yw(7  
* @param i K|^'`FpPO  
*/ /@qnEP%  
private void insertSort(int[] data, int start, int len) { 5kbbeO|0G  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W< sa6,$  
} (W'.vEl  
} "2 "gTS  
} ;(I')[R "  
} ,UE>@;]  
m&!4*D  
堆排序: h qT6]*  
).D+/D/"2  
package org.rut.util.algorithm.support; :y%CP8  
io{\+%;b~  
import org.rut.util.algorithm.SortUtil; [ :*Jn}  
8AgKK=C =  
/** kD.KZV  
* @author treeroot bDq[j8IT6  
* @since 2006-2-2 e$=UA%  
* @version 1.0 PTZ/j g@71  
*/ Z?"f#  
public class HeapSort implements SortUtil.Sort{ 'PK;Fg\  
|'ML )`c[  
/* (non-Javadoc) Fx6]x$3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >xB[k-C4  
*/ U?.cbB,  
public void sort(int[] data) { Oll,;{<O  
MaxHeap h=new MaxHeap(); TP R$oO2  
h.init(data); f:hsE  
for(int i=0;i h.remove(); wR]jJb F  
System.arraycopy(h.queue,1,data,0,data.length); ?CU6RC n  
} Ww)p&don  
OJ!=xTU%h  
private static class MaxHeap{ sfKu7puc  
(Xv' Te?  
void init(int[] data){ 4SDUTRo a  
this.queue=new int[data.length+1]; S;L=W9=wby  
for(int i=0;i queue[++size]=data; bpp{Z1/4  
fixUp(size); tkj QSz  
} 05PRlz *x=  
} P~d&PhOe  
x4=Sm0Ro|V  
private int size=0; hw9qnSeRy  
'h.:-1# L  
private int[] queue; m(DJ6CSa  
B3C%**~:e  
public int get() { /; {E}`  
return queue[1]; sDXD>upO  
} Svqj@@_f  
fWk,k*Z 9  
public void remove() { ta+MH,  
SortUtil.swap(queue,1,size--); L5j%4BlK/  
fixDown(1); p()#+Xy  
} lC8Z@wkjO  
file://fixdown 2>+(OL4l  
private void fixDown(int k) { `G0GWh)`x  
int j; T0TgV  
while ((j = k << 1) <= size) { ~H4wsa39  
if (j < size %26amp;%26amp; queue[j] j++; u/_TR;u= q  
if (queue[k]>queue[j]) file://不用交换 ;vuqI5k  
break; xmXuBp:M(R  
SortUtil.swap(queue,j,k); O3KTKL]  
k = j; 9Rd& Jq^  
} =IH~:D\&  
}  @ ^cR  
private void fixUp(int k) { ic;M=dsh:  
while (k > 1) { l' mdj!{&  
int j = k >> 1; Nbvs_>N   
if (queue[j]>queue[k]) -~] q?k?  
break; PX/7:D?  
SortUtil.swap(queue,j,k); NXHe;G  
k = j; u8Ak2:   
} \` U=pZJ  
} XT%\Ce!  
r\T'_wo  
} /nWBol,  
SUC'o"  
} fvBL? x  
G0~6A@>  
SortUtil: /N9ct4 {^  
W\Df:P {<  
package org.rut.util.algorithm; E! GH$%:;  
q,m+W='  
import org.rut.util.algorithm.support.BubbleSort; lx\9Y8  
import org.rut.util.algorithm.support.HeapSort; q5xF~SQGw2  
import org.rut.util.algorithm.support.ImprovedMergeSort; Us2IeR  
import org.rut.util.algorithm.support.ImprovedQuickSort; >r\q6f#J4  
import org.rut.util.algorithm.support.InsertSort; `F`{s`E)  
import org.rut.util.algorithm.support.MergeSort; 8}K^o>J&K  
import org.rut.util.algorithm.support.QuickSort; CuT50N;tk  
import org.rut.util.algorithm.support.SelectionSort; 38#Zlc f  
import org.rut.util.algorithm.support.ShellSort; 8_Nyy/K#F  
572{DC&T  
/** pv]2"|]V)  
* @author treeroot 'W*:9wah  
* @since 2006-2-2 l0w<NZ F  
* @version 1.0 ^_gH}~l+U  
*/ #IR,KX3]A  
public class SortUtil { %E2b{Y;  
public final static int INSERT = 1; ~JQ6V?fucD  
public final static int BUBBLE = 2; p|+TgOYOc  
public final static int SELECTION = 3; $W]}m"l  
public final static int SHELL = 4; 8+@j %l j  
public final static int QUICK = 5; hQ ?zc_ 3  
public final static int IMPROVED_QUICK = 6; fSF_O}kLp  
public final static int MERGE = 7; gY&WH9sp?9  
public final static int IMPROVED_MERGE = 8; s[bQO1g;*  
public final static int HEAP = 9; \IaUsx"#o{  
ZM16 ~k  
public static void sort(int[] data) { XR_Gsb%l  
sort(data, IMPROVED_QUICK); E?- ~*T  
} HA74s':FN  
private static String[] name={ 0[])wl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4<V}A j8l  
}; |*$0~mA  
oy-y Q YX  
private static Sort[] impl=new Sort[]{ H/U.Bg 4  
new InsertSort(), v\o m  
new BubbleSort(), ezb*tN!  
new SelectionSort(), R-YNg  
new ShellSort(), A<_{7F9  
new QuickSort(), <?>tjCg'  
new ImprovedQuickSort(), o~7D=d?R  
new MergeSort(), Rt>mAU$}  
new ImprovedMergeSort(), goe %'k,  
new HeapSort() .*edaDi  
}; +ib&6IU  
(q@%eor&}  
public static String toString(int algorithm){ hg2Ywzfm-  
return name[algorithm-1]; [}HS[($  
} ik#ti=.  
H'+3<t>  
public static void sort(int[] data, int algorithm) { d$^ @$E2f  
impl[algorithm-1].sort(data); y* :C~  
} U@9v(TfV  
&F:%y(;{Y  
public static interface Sort { WjguM  
public void sort(int[] data); @ZRg9M:N  
} DwGRv:&HH  
vmg[/#  
public static void swap(int[] data, int i, int j) { nC(Lr,(  
int temp = data; 2@W`OW Njm  
data = data[j]; EU7nS3K)O~  
data[j] = temp; +Sc2'z>R  
} NL,6<ZOon,  
} _Q'f^Kj  
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