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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。 +\c5]`  
插入排序: +mmSfuO&\  
G%AbC"  
package org.rut.util.algorithm.support; +>Qq(Y  
. y-D16V  
import org.rut.util.algorithm.SortUtil; %S@ZXf~:  
/** \K{0L  
* @author treeroot QQ*hCyw!  
* @since 2006-2-2 XSe=sHEI  
* @version 1.0 5T_n %vz  
*/ 7$vYo _  
public class InsertSort implements SortUtil.Sort{ \FbvHr,  
?qLFaFt/  
/* (non-Javadoc) Yq0| J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * 8yAG]z  
*/ jk; clwyz/  
public void sort(int[] data) { +,T RfP Fb  
int temp; @uqd.Q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U0 Yll4E  
} (cAIvgI  
} h5{'Q$Erl  
} 1MP~dRZ$  
MSQEO4ge  
} VgG0VM  
!*F1q|R  
冒泡排序: W#4 7h7M  
@;zl  
package org.rut.util.algorithm.support; \ =?a/  
fNli  
import org.rut.util.algorithm.SortUtil; Xtq_y'I  
l6T-}h:=  
/** UqFO|r"M  
* @author treeroot ^pAAzr"hv  
* @since 2006-2-2 E"\<s3  
* @version 1.0 %Q__!D[  
*/ {7"Q\  
public class BubbleSort implements SortUtil.Sort{ n/;WxnnQ  
]_mb7X>  
/* (non-Javadoc) =r?hg GWe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) | C;=-|  
*/ AW%#O\N  
public void sort(int[] data) { (Ft+uuG  
int temp; jiV<+T?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ o]J{{M'E  
if(data[j] SortUtil.swap(data,j,j-1); P_dCR  
} ITE{@1  
} Xk~D$~4<  
} Gv!2f  
} ~NrG` D}  
EnKR%Ctw  
} 'NXN& {  
j\[dx^\=  
选择排序: )0.kv2o.  
T6y\|  
package org.rut.util.algorithm.support; $B 2J T9  
Ex Y]Sdx  
import org.rut.util.algorithm.SortUtil; zsEc(  
|B?m,U$A!  
/** Z, zWuE3  
* @author treeroot $u$!tj  
* @since 2006-2-2 y|C(X  
* @version 1.0 qTRsZz@  
*/ ,8S/t+H  
public class SelectionSort implements SortUtil.Sort { .KB^3pOpx  
&n}]w+w  
/* (Z+.45{-  
* (non-Javadoc) #`qx<y*S  
* e/KDw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !fV+z%:  
*/ Avge eJi  
public void sort(int[] data) { j"t(0 m  
int temp; WrnrFz  
for (int i = 0; i < data.length; i++) { ^H p; .f.  
int lowIndex = i; @N>\|!1CC  
for (int j = data.length - 1; j > i; j--) { *<$*"p  
if (data[j] < data[lowIndex]) { SXSgld2uS  
lowIndex = j; I13y6= d  
} a=|K%ii+Y  
} j2t7'bO_  
SortUtil.swap(data,i,lowIndex); e@L=LW>  
} @+&LYy72  
} x 77*c._3v  
!{+,B5 Hc  
} t >L2  
sNbxI|B  
Shell排序: JinUV6cr  
s$zLiQF;  
package org.rut.util.algorithm.support; $P >  
A6  
import org.rut.util.algorithm.SortUtil; E+j/ Cu  
!4ocZmj\  
/** KaLzg5is  
* @author treeroot Z\(q@3C  
* @since 2006-2-2 -vAC"8)S  
* @version 1.0 AmUr.ofu  
*/ rX U  
public class ShellSort implements SortUtil.Sort{ [$ubNk;!z  
lB8-Z ow  
/* (non-Javadoc) lne|5{h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BwN0!lsF3  
*/ Eh)fnqs_d}  
public void sort(int[] data) { o@_q]/Mh  
for(int i=data.length/2;i>2;i/=2){ \ ,'m</o~,  
for(int j=0;j insertSort(data,j,i); : p1u(hflS  
} 7zl5yK N  
} ] 7[ 3>IN  
insertSort(data,0,1); v8wq,CYV  
} s-NX o  
mtpeRVcF  
/** .97])E[U  
* @param data <jBF[v9*m(  
* @param j +i6GHBn~J  
* @param i (=FRmdeYl1  
*/ 1>.Ev,X+e  
private void insertSort(int[] data, int start, int inc) { VnSCz" ?3  
int temp; ?=u\n;w)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ob!P ;]T  
} O"+ gQXe  
} ,=uD^n:  
} mn'A9er  
c rQ8q;:  
} h! ,v/7=  
;gD})@  
快速排序: %6t:(z  
./XYd"p  
package org.rut.util.algorithm.support; Ml`:UrU  
;'gWu  
import org.rut.util.algorithm.SortUtil; cQjv$$&6[  
+Z,;,5'5G  
/** Hkg2P ,2  
* @author treeroot #QZe,"C9`  
* @since 2006-2-2 m%0p\Y-/  
* @version 1.0 9v#CE!  
*/ k<z )WNBf  
public class QuickSort implements SortUtil.Sort{ :S]\0;8]  
,10=  
/* (non-Javadoc) wC"FDr+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M+oHtX$  
*/ XjBW9a  
public void sort(int[] data) { 05|=`eJ  
quickSort(data,0,data.length-1); )|cc X  
} MnmVl"(/  
private void quickSort(int[] data,int i,int j){ hy9\57_#  
int pivotIndex=(i+j)/2; g9OY<w5s]  
file://swap >e lJkq|  
SortUtil.swap(data,pivotIndex,j); T%+ #xl  
\-E^lIVF  
int k=partition(data,i-1,j,data[j]); ??5Q)Erm1  
SortUtil.swap(data,k,j); pG_;$8Hc  
if((k-i)>1) quickSort(data,i,k-1); k``_EiV4t  
if((j-k)>1) quickSort(data,k+1,j); pt?bWyKG  
R- X5K-  
} HH`'*$]7  
/** -+-?w|}qV  
* @param data YH$-g  
* @param i 7K12 G!)  
* @param j SV4E0c>  
* @return p;a,#IJu  
*/ v{RZJ^1  
private int partition(int[] data, int l, int r,int pivot) { #{0HYg?(f  
do{ W@>% {eE  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &{5,:%PXw  
SortUtil.swap(data,l,r); VCYwzB  
} , };& tR  
while(l SortUtil.swap(data,l,r); #-rH1h3*q  
return l; F k7?xc  
} " > ypIR<  
$L `d&$Vh  
} 'JtBZFq  
>\R+9p:o  
改进后的快速排序: /|w6:;$;mn  
_IMW {  
package org.rut.util.algorithm.support; e v}S+!|U  
+SzU  
import org.rut.util.algorithm.SortUtil; 3qgS&js 7  
uuEV_"X  
/** 6dQ-HI*Y#  
* @author treeroot a9e>iU  
* @since 2006-2-2 {'flJ5]  
* @version 1.0 je\Ph5"  
*/ 85= )lu  
public class ImprovedQuickSort implements SortUtil.Sort { rCEyQ)R_}  
!"AvY y9  
private static int MAX_STACK_SIZE=4096; h#I>M`|  
private static int THRESHOLD=10; $V;i '(&7  
/* (non-Javadoc) 4IK( 7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fy1|$d{'  
*/ Mc lkEfn  
public void sort(int[] data) { ]2A^1Del  
int[] stack=new int[MAX_STACK_SIZE]; ;7*[Bcj.  
>fG3K`  
int top=-1; 6{K,c@VFd  
int pivot; 2YL?,uLS  
int pivotIndex,l,r; U)TUOwF  
299H$$WS,Z  
stack[++top]=0; g @Z))M+  
stack[++top]=data.length-1; b1q"!+8y  
e)IzQ7Zex  
while(top>0){ >IafUy  
int j=stack[top--]; te`$%NRl  
int i=stack[top--]; |T /ZL!  
yZ7&b&2nLn  
pivotIndex=(i+j)/2; (y'hyJo  
pivot=data[pivotIndex]; Y;eZ9|Ht9  
[|wZ77\  
SortUtil.swap(data,pivotIndex,j); -:^U_FL8un  
n)/z0n!\  
file://partition ZmqKQO  
l=i-1; wVXS%4|v  
r=j; &<g|gsG`  
do{ Jumgb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &;6`)M{*}  
SortUtil.swap(data,l,r); 1UgEI"#a6g  
} `cn#B BV  
while(l SortUtil.swap(data,l,r); 2ACCh4(/P  
SortUtil.swap(data,l,j); H H)!_(SA  
of~4Q{f$6  
if((l-i)>THRESHOLD){ &3>)qul  
stack[++top]=i; m,28u3@r  
stack[++top]=l-1; ;]puq  
} _RYxD"m y  
if((j-l)>THRESHOLD){ ;LfXi 8)  
stack[++top]=l+1; %Qgw7p4  
stack[++top]=j; hW' )Sp  
} h8j.(  
B4/>H|  
} e4$H&'b|  
file://new InsertSort().sort(data); yu {d! {6  
insertSort(data); t,Lrfv])  
} >{ ]%F*p4  
/** G5_=H,Vmd  
* @param data TprTWod2]t  
*/ M.D1XX 1/  
private void insertSort(int[] data) { 1nM  #kJ"  
int temp; ldcqe$7,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 68|E9^`l  
} S\EyCi+  
} mUC)gA/  
} PQt")[  
w(Ovr`o?9t  
} )}R0Y=e  
Jrf=@m\dk  
归并排序: KkyVSoD\  
}Bh8=F3O Q  
package org.rut.util.algorithm.support; Y Uc+0  
w/<L Ag  
import org.rut.util.algorithm.SortUtil; "^[ 'y7i  
bP#:Oi0v`  
/** NYUL:Tp  
* @author treeroot v"$L702d$\  
* @since 2006-2-2 tT8%yG}  
* @version 1.0 (Rh,,  
*/ /N+dQe  
public class MergeSort implements SortUtil.Sort{ Ny7S  
K3&qq[8.e  
/* (non-Javadoc) N% B>M7-=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VCfl`Aq'l  
*/ 2qNt,;DQ  
public void sort(int[] data) { *R,5h2;  
int[] temp=new int[data.length]; 7+cO_3AB  
mergeSort(data,temp,0,data.length-1); **0~K";\  
} ?81c 4w  
xu%k~4cB,  
private void mergeSort(int[] data,int[] temp,int l,int r){ i"FtcP^  
int mid=(l+r)/2; b_krk\e@S  
if(l==r) return ; 2;b\9R^>A  
mergeSort(data,temp,l,mid); <=&`ZH   
mergeSort(data,temp,mid+1,r); I,DS@SK  
for(int i=l;i<=r;i++){ ^CH=O|8j  
temp=data; c#]4awHU  
} 3&4(ZH=  
int i1=l; E=Bf1/c\  
int i2=mid+1; `[yKFa I  
for(int cur=l;cur<=r;cur++){ "{xrL4BtC  
if(i1==mid+1) 'oVx#w^mf  
data[cur]=temp[i2++]; 3M`M  
else if(i2>r) ^ +\dz  
data[cur]=temp[i1++]; ?UR0:f:}oc  
else if(temp[i1] data[cur]=temp[i1++]; R w\gTo  
else E&w7GZNt  
data[cur]=temp[i2++]; _61gF[r4!Y  
} |-ALklXr  
} $HzBD.CF|x  
 K5 z<3+  
} DCa^ u'f  
3,w_ ".m`#  
改进后的归并排序: j;r-NCBnz  
4J? 0bZ  
package org.rut.util.algorithm.support; >y>5#[M!  
&-w Cvp7  
import org.rut.util.algorithm.SortUtil; Jpq~  
pki%vRY  
/** fOrH$?  
* @author treeroot :-Z2:/P  
* @since 2006-2-2 2,F .$X  
* @version 1.0 6MW{,N  
*/ ~~P5k:  
public class ImprovedMergeSort implements SortUtil.Sort { (C L%>5V  
0+ '&`Q!u  
private static final int THRESHOLD = 10; -2[a2^a'  
>=>2m2z=  
/* b|DdG/O  
* (non-Javadoc) +sA2WK]  
* *^4"5X@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Yl-w-oe  
*/ q;CiV  
public void sort(int[] data) { *fxG?}YT  
int[] temp=new int[data.length]; L*+@>3mu)  
mergeSort(data,temp,0,data.length-1); )&O %*@F  
} F>l] 9!P|m  
EVSX.'&f  
private void mergeSort(int[] data, int[] temp, int l, int r) { ND;#7/$>  
int i, j, k; {tZ.v@  
int mid = (l + r) / 2; ki!0^t:9  
if (l == r) [q -h|m  
return; <'*LRd$1  
if ((mid - l) >= THRESHOLD) Gd=RyoJl  
mergeSort(data, temp, l, mid); 2ilQXy  
else Hn"RH1Zy  
insertSort(data, l, mid - l + 1); r19 pZAc  
if ((r - mid) > THRESHOLD) t~XN}gMxw  
mergeSort(data, temp, mid + 1, r); `^&OF u ee  
else PZ9I`P! C  
insertSort(data, mid + 1, r - mid); T8g$uFo  
6_Y,eL]"  
for (i = l; i <= mid; i++) { L4HI0Mx  
temp = data; ZE}}W _  
} ~>|ziHx  
for (j = 1; j <= r - mid; j++) { R m( "=(  
temp[r - j + 1] = data[j + mid]; bAMdI 5Zk?  
} y)@wjH{6  
int a = temp[l]; C6PdDRf  
int b = temp[r]; 0l6.<-f{  
for (i = l, j = r, k = l; k <= r; k++) { Gc|idjW4  
if (a < b) { [W&T(%(W-  
data[k] = temp[i++]; 0H:X3y+  
a = temp; ;Y, y4{H3  
} else { 4WB0Pt{  
data[k] = temp[j--]; /N{*"s2)  
b = temp[j]; 9'B `]/L  
} `c$V$/IT  
} 9* M,R,y  
} guR/\z$D@C  
75lA%| *X  
/** !nnC3y{G  
* @param data 6gDN`e,@  
* @param l ^2rN>k,?  
* @param i tw@X> G1z  
*/ 9(Xn>G'iT  
private void insertSort(int[] data, int start, int len) { 8s@3hXD&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %|oym.-I6  
} m&3xJuKih  
} d=/F}yP~?s  
} %cn<ych G  
} ;^L(^Hx  
-9?]IIVb  
堆排序: HoAy_7-5  
5^Zg>I  
package org.rut.util.algorithm.support; y~V(aih}D  
8Zdn,}Z  
import org.rut.util.algorithm.SortUtil; UiNP3TJ'L  
| -H& o]  
/** EU#^7  
* @author treeroot |.dRily+  
* @since 2006-2-2 7tp36TE  
* @version 1.0 U<XG{<2  
*/ *4 n)  
public class HeapSort implements SortUtil.Sort{ pgo$ 61  
#-J>NWdt  
/* (non-Javadoc) eMzk3eOJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I/N *gy?*  
*/ LP=)~K<  
public void sort(int[] data) { (@YG~ 0  
MaxHeap h=new MaxHeap(); wd6owr  
h.init(data); k?}Zg*  
for(int i=0;i h.remove(); ?JUeuNs9  
System.arraycopy(h.queue,1,data,0,data.length); W g! Lfu  
} l,).p  
h+,@G,|D  
private static class MaxHeap{ xSu >  
Bbc^FHip  
void init(int[] data){ 5r0YA IJ  
this.queue=new int[data.length+1]; 4p wH>1  
for(int i=0;i queue[++size]=data; ?7A>+EY  
fixUp(size); AZ<= o  
} Vvo 7C!$z  
} JXx wr)i  
wC*X4 '  
private int size=0; XPPdwTOr  
A}!J$V:w]  
private int[] queue;  !@sUj  
gM]:Ma  
public int get() { 1;iUWU1@  
return queue[1]; l-3~K-k<@  
} {`_i`  
*WZA9G#V5  
public void remove() { \7_y%HR  
SortUtil.swap(queue,1,size--); n"8Yv~v*2j  
fixDown(1); SrJE_~i  
} C# pjmT_  
file://fixdown i~72bMwsA  
private void fixDown(int k) { ,: ^u-b|  
int j; +|f@^-  
while ((j = k << 1) <= size) { }B^tL$k  
if (j < size %26amp;%26amp; queue[j] j++; 8CE = 4  
if (queue[k]>queue[j]) file://不用交换 6~+e mlD  
break; 'fW-Y!k%  
SortUtil.swap(queue,j,k); xx $cnG  
k = j; @+DX.9  
} l"]V6!-U  
} MOC/KNb  
private void fixUp(int k) { SfR%s8c`  
while (k > 1) { r|Z{-*`  
int j = k >> 1; ?4uL-z](V  
if (queue[j]>queue[k]) sRfcF`7  
break; <naz+QK'  
SortUtil.swap(queue,j,k); ;a3}~s  
k = j; q\)-BXw:  
} DNi+"[~&P  
} lxi<F  
,,TnIouy  
} Z:gyz$9w  
P2Y^d#jO  
} Y*hCMy;  
6:2vP NF  
SortUtil: [-&Zl(9&  
\NC3'G:Ii  
package org.rut.util.algorithm; 2rMpgV5  
V.Mry`9-  
import org.rut.util.algorithm.support.BubbleSort; GthYzd:'hJ  
import org.rut.util.algorithm.support.HeapSort; Pz^544\~ou  
import org.rut.util.algorithm.support.ImprovedMergeSort; .V*^|UXbHi  
import org.rut.util.algorithm.support.ImprovedQuickSort; D{!IW!w  
import org.rut.util.algorithm.support.InsertSort; ^}r1;W?n  
import org.rut.util.algorithm.support.MergeSort; PW4q~rc=:  
import org.rut.util.algorithm.support.QuickSort; _*zt=zn>  
import org.rut.util.algorithm.support.SelectionSort; Js;h%  
import org.rut.util.algorithm.support.ShellSort; g .\[o@H  
<vP=zk  
/** f 1d?.)  
* @author treeroot 7o4\oRGV  
* @since 2006-2-2 E.f%H(b  
* @version 1.0 oU/5 a>9~  
*/ ,vDbp?)'U  
public class SortUtil { c%&>p||  
public final static int INSERT = 1; `{Ul!  
public final static int BUBBLE = 2; ])!*_  
public final static int SELECTION = 3; `x|?&Ytmf9  
public final static int SHELL = 4; (#'>(t(4  
public final static int QUICK = 5; 5X+A"X ;C  
public final static int IMPROVED_QUICK = 6; 9VT;ep  
public final static int MERGE = 7; o}!PQ#`M  
public final static int IMPROVED_MERGE = 8; h$*!8=M  
public final static int HEAP = 9; W4N{S.#!  
fZ. ONq  
public static void sort(int[] data) { b]y2+A.n  
sort(data, IMPROVED_QUICK); CWlw0 X  
} D]}G.v1  
private static String[] name={ iB{V^ksU  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]{iQ21`a-  
}; ,s(,S  
HV.t6@\};  
private static Sort[] impl=new Sort[]{ 4z? l  
new InsertSort(), nK,w]{<wG!  
new BubbleSort(), SdWV3  
new SelectionSort(), ys~x $  
new ShellSort(), 40/Y\  
new QuickSort(), "fI6Cpc  
new ImprovedQuickSort(), :>*7=q=  
new MergeSort(), PdCEUh\>y  
new ImprovedMergeSort(), "8RSvT<W^5  
new HeapSort() 2?5>o!C  
}; N0lC0 N?_J  
:0ep( <|;  
public static String toString(int algorithm){ <m m[S  
return name[algorithm-1]; {FG j]*  
} ~`/V(r;o  
R@0R`Zs  
public static void sort(int[] data, int algorithm) { sRW<me;  
impl[algorithm-1].sort(data); O}P`P'Y|'  
} /,dz@   
U17d>]ka  
public static interface Sort { \8 ":]EU  
public void sort(int[] data); aYeR{Y]  
} ?(PKeq6  
:+Z%; Dc  
public static void swap(int[] data, int i, int j) { \lY_~*J  
int temp = data; _&x%^&{  
data = data[j]; Mhu*[a=;x  
data[j] = temp; >7FHo-H/T  
} SKtrtm  
} ~?dI*BZ)]  
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