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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。 G+m }MOQP7  
插入排序: z(~_AN M4,  
W%Fv p;\`  
package org.rut.util.algorithm.support; moE2G?R  
[N'h%1]\  
import org.rut.util.algorithm.SortUtil; .]K%G\*`:  
/** Vt ohL+  
* @author treeroot h@BY]80  
* @since 2006-2-2 uw8f ~:LT  
* @version 1.0 y)<q /  
*/ )M^ gT}M  
public class InsertSort implements SortUtil.Sort{ ]_$[8#kg  
w2'5#`m  
/* (non-Javadoc) 5-A\9UC*@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & nK<:^n  
*/ ./~(7o$  
public void sort(int[] data) { *K; ~!P  
int temp; -n;}n:w L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WY]s |2a  
} d"Y{UE  
} yCo.cd-  
} d d;T-wa}  
%jM,W}2  
} 3$JoDL(Z  
@%SQFu@FJ  
冒泡排序: W_ ZJ0GuE(  
)pn3~t<e d  
package org.rut.util.algorithm.support; T]$U""  
Qwc"[N4H  
import org.rut.util.algorithm.SortUtil; ?h2}#wg  
8;X-)&R  
/** zBH2@d3W  
* @author treeroot WEpoBP CL  
* @since 2006-2-2 e';_Y>WQy  
* @version 1.0 )`}:8y?  
*/ aQ~s`^D  
public class BubbleSort implements SortUtil.Sort{ xN(|A}w  
wA.\i  
/* (non-Javadoc) MO]&bHH7;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nj4/#W  
*/ dqAw5[qMJ  
public void sort(int[] data) { h `wD  
int temp; B erwI 7!=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ l;V173W=&  
if(data[j] SortUtil.swap(data,j,j-1); tMe~vq[  
} QSj]ZA  
} 1 {)Q[#l  
} %>s |j'{  
} azU"G(6y?+  
Y^]rMK/;  
} O H7FkR  
.p$(ZH =~  
选择排序: K+iP 6B  
y> (w\K9W  
package org.rut.util.algorithm.support; 8>%hz$no=  
(iGTACoF  
import org.rut.util.algorithm.SortUtil; d!{r  v  
q'11^V!0  
/** B1Oq!k  
* @author treeroot \[nut;  
* @since 2006-2-2 =Runf +}  
* @version 1.0 LHmZxi?  
*/ Rva$IX ^]  
public class SelectionSort implements SortUtil.Sort {  C.QO#b  
JN6B~ZNf  
/* 'm9` 12 H  
* (non-Javadoc) uVU)d1N  
* rQ9'bCSr%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P>6{&(  
*/ k_R"CKd  
public void sort(int[] data) { r%N)bNk~  
int temp; tI{_y  
for (int i = 0; i < data.length; i++) { @lt#Nz  
int lowIndex = i; 1nOCQ\$l  
for (int j = data.length - 1; j > i; j--) { bN88ua}k{  
if (data[j] < data[lowIndex]) { iR0y"Cii  
lowIndex = j; O1kl70,`R  
} L4f3X~8,b  
} 9C i-v/M]  
SortUtil.swap(data,i,lowIndex); GH xp7H  
} DeYV$W B  
} |D.ND%K&  
D3A/l  
} &-=5Xc+Z  
u-C)v*#L  
Shell排序: i@CxI<1'  
L.WljNo  
package org.rut.util.algorithm.support; 39jG8zr=Z[  
W'.m'3#z  
import org.rut.util.algorithm.SortUtil; w*MpX U<  
Ca3~/KrM  
/** X 8`Sf>  
* @author treeroot ]:\dPw`A  
* @since 2006-2-2 } d }lR  
* @version 1.0 IIqUZJ  
*/ D sWS Gb  
public class ShellSort implements SortUtil.Sort{ D,ln)["xm  
C8\^#5  
/* (non-Javadoc) TOAAQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K4);HJ|=  
*/ 8x{'@WCG%  
public void sort(int[] data) { bYPKh  
for(int i=data.length/2;i>2;i/=2){ Ic4H#w  
for(int j=0;j insertSort(data,j,i); .>nRzgo  
} 8sCv]|cn  
} ],v=]+R  
insertSort(data,0,1); {}Za_(Y,]  
} y)gKxRaCS  
+'w3 =2Bo  
/** r"R#@V\'1b  
* @param data cFWc<55aX6  
* @param j FsryEHz  
* @param i 188*XCtjQ9  
*/ 5PnDN\  
private void insertSort(int[] data, int start, int inc) { k;L6R!V  
int temp; :,I:usW"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); BF<ikilR  
} @ry_nKr9  
} z$xo$R(  
} GM<-&s!Uj  
Wxe0IXq3Nn  
} e 3TI|e_  
&8 x-o,  
快速排序: BVO<e \>3  
K96<M);:g  
package org.rut.util.algorithm.support; !0cD$^7  
"-J -k=  
import org.rut.util.algorithm.SortUtil; O1mKe%'|  
,4oo=&  
/** bY0|N[ g  
* @author treeroot o0vUj  
* @since 2006-2-2 _ORvo{[:  
* @version 1.0 ;d9QAN&0}  
*/ '08=yqy4N  
public class QuickSort implements SortUtil.Sort{ I 2|Bg,e  
^v`\x5"Vp  
/* (non-Javadoc) W{gb:^;zb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6i~WcAs  
*/ e)O 4^#i  
public void sort(int[] data) { |H+Wed|  
quickSort(data,0,data.length-1); k)Qtfj}uij  
} 680o)hh4m>  
private void quickSort(int[] data,int i,int j){ :Z z '1C  
int pivotIndex=(i+j)/2; N*&1GT#9  
file://swap xK\d4 "  
SortUtil.swap(data,pivotIndex,j); e@OX_t_  
bbyg8;/  
int k=partition(data,i-1,j,data[j]); hfy_3}_  
SortUtil.swap(data,k,j); "6?0h[uff  
if((k-i)>1) quickSort(data,i,k-1); /~f'}]W  
if((j-k)>1) quickSort(data,k+1,j); NTI+  
}~e%J(  
} H+Sz=tg5  
/** 1 Ya`| ?FS  
* @param data A$:U'ZG_  
* @param i j ?(&#  
* @param j ^M>P:~  
* @return KMjhZap%  
*/ v oj^pzZ  
private int partition(int[] data, int l, int r,int pivot) { s}% M4  
do{ l2P=R)@{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W1=H8 O  
SortUtil.swap(data,l,r); p"ZG%Ow5Q]  
} P(z++A&  
while(l SortUtil.swap(data,l,r);  1HZO9cXJ  
return l; ';=O 0)u  
} =rCIumqD-}  
pD#rnp>WWt  
} .UY^oR=b{  
M1iS(x  
改进后的快速排序: )f<z% :I+Z  
m-"w0Rl1T  
package org.rut.util.algorithm.support; 3x'|]Ns  
"5wa91*  
import org.rut.util.algorithm.SortUtil; X*@dj_,  
_t #k,;  
/** o$lM$E:  
* @author treeroot ~AT'[(6  
* @since 2006-2-2 Y#P%6Fy  
* @version 1.0 @7j AL-  
*/ `, Tz Q  
public class ImprovedQuickSort implements SortUtil.Sort { VZmLS 4E  
ByNn  
private static int MAX_STACK_SIZE=4096; 9e,0\J  
private static int THRESHOLD=10; JB[~;nLlC  
/* (non-Javadoc) czRFMYE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hp-<2i^"!  
*/ l3I:Q^x@  
public void sort(int[] data) { r:ptQo`1-  
int[] stack=new int[MAX_STACK_SIZE]; >_"an~Ss  
@8r pD"x  
int top=-1; S2VA{9:m  
int pivot; Q:k}Jl  
int pivotIndex,l,r; j yUCH*@  
 DwE[D]7o  
stack[++top]=0; 8i#2d1O  
stack[++top]=data.length-1; !58@pLJw  
!\.pq  2  
while(top>0){ ]*[ 2$  
int j=stack[top--]; XG{zlOD+  
int i=stack[top--]; &H/'rd0M  
S8j{V5R'  
pivotIndex=(i+j)/2; GM f `A,>  
pivot=data[pivotIndex]; T&u5ki4NE  
"Nbq#w\  
SortUtil.swap(data,pivotIndex,j); #-i>;Rt  
B; h"lv  
file://partition .jT#:_  
l=i-1; 9c,'k#k  
r=j; XXcl{1Kp!@  
do{ Jgd'1'FOs  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zFff`]^`  
SortUtil.swap(data,l,r); P'[3Fqe  
} EC!02S  
while(l SortUtil.swap(data,l,r); 62o:,IcoG  
SortUtil.swap(data,l,j); .Una+Z  
3E $f)  
if((l-i)>THRESHOLD){ 8ek@: Mw  
stack[++top]=i; W^LY'ypT  
stack[++top]=l-1; ( !fKNia@S  
} ;m{1 _1  
if((j-l)>THRESHOLD){ BdblLUGK#  
stack[++top]=l+1; ;d"F%M y  
stack[++top]=j; Y}|X|!0x  
} " h~Z u  
'RYIW/a  
} `1{ZqRFQ  
file://new InsertSort().sort(data); MSqVlj  
insertSort(data); q"sed]  
} ]e>w }L(gV  
/** %JD,$p Ps  
* @param data dkBIx$t  
*/ ^{;oM^Q'  
private void insertSort(int[] data) { Z<y I\1  
int temp; [KaAXv .X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^-Kf']hU  
} V0.vQ/  
} d#rf5<i  
} as4;:  
dx{bB%?Y\=  
} tla 5B_  
(G4at2YLd  
归并排序: Ed,~1GanY  
sn$9Shgh  
package org.rut.util.algorithm.support; YPK(be_|I  
=llvuUd\n  
import org.rut.util.algorithm.SortUtil; pF:$  ko  
m6&~HfwN  
/** ;jvBF4Lb>  
* @author treeroot l2rd9 -T  
* @since 2006-2-2 +LZLy9iKt  
* @version 1.0 i&66Fi1  
*/ =eXU@B  
public class MergeSort implements SortUtil.Sort{ A) %/[GD2  
)j(7]uX`  
/* (non-Javadoc) L Mbn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #crQ1p) \  
*/ 5Y'qaIFR  
public void sort(int[] data) {  ~f1%8z  
int[] temp=new int[data.length]; lVR~Bh  
mergeSort(data,temp,0,data.length-1); T?soJ]A  
} E=CsIK   
ag#S6E^%S  
private void mergeSort(int[] data,int[] temp,int l,int r){ z.9U}F  
int mid=(l+r)/2; mD0f<gJ1  
if(l==r) return ; m=A(NKZ   
mergeSort(data,temp,l,mid); [OV"}<V  
mergeSort(data,temp,mid+1,r); %.Fi4}+O  
for(int i=l;i<=r;i++){ H*&f:mfq  
temp=data; }{qZ[/JwqN  
} k,E{C{^M  
int i1=l; EZy)A$|  
int i2=mid+1; l7259Ro~  
for(int cur=l;cur<=r;cur++){ ]&xk30  
if(i1==mid+1) otl0J Ht*+  
data[cur]=temp[i2++]; _jI,)sr4ic  
else if(i2>r) XQs1eP'{  
data[cur]=temp[i1++]; z Rl3KjET  
else if(temp[i1] data[cur]=temp[i1++]; '}JhzKNj  
else k_qd |  
data[cur]=temp[i2++]; qL&[K>2z  
} EC6DW=  
} DV+xg3\(>1  
t?ZI".>  
} +xSHL|:b  
^aMg/.j  
改进后的归并排序: R{3N&C  
YX7L?=;.@  
package org.rut.util.algorithm.support; *:YiimOY"  
C'+YQ]u  
import org.rut.util.algorithm.SortUtil; KRLQ #,9  
WJndoB.f[2  
/** }Qc@m9;bH  
* @author treeroot +0%w ;'9z  
* @since 2006-2-2 HU }7zK2  
* @version 1.0 m )zUU  
*/ -MO#]K3<  
public class ImprovedMergeSort implements SortUtil.Sort { ./k/KSR  
@ ZwvBH  
private static final int THRESHOLD = 10; =wHVsdNCN  
Zq|I,l0+E  
/* t#/YN.@r  
* (non-Javadoc) eV"h0_ox  
* VT%NO'0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /W30~y  
*/ ?)?Ng}  
public void sort(int[] data) { ;| 5F[  
int[] temp=new int[data.length]; Ar|0b}=)>  
mergeSort(data,temp,0,data.length-1); wj<6kG  
} Eh;'S"{/?j  
9ni1f{k  
private void mergeSort(int[] data, int[] temp, int l, int r) { C'@i/+  
int i, j, k; Ae^~Cz1qz  
int mid = (l + r) / 2; #$+*;  
if (l == r) } FlT%>Gw  
return; p8H'{f\G  
if ((mid - l) >= THRESHOLD) H8^(GUhyp  
mergeSort(data, temp, l, mid); eRstD>r  
else uk]$#TV*q>  
insertSort(data, l, mid - l + 1); ua Gk6S  
if ((r - mid) > THRESHOLD) +I:Unp  
mergeSort(data, temp, mid + 1, r); };bEU wGWf  
else nQtWvT  
insertSort(data, mid + 1, r - mid); uR4z &y  
PbgP\JeX  
for (i = l; i <= mid; i++) { "f2$w  
temp = data; }J`w4P  
} Nk 8B_{  
for (j = 1; j <= r - mid; j++) {  O67W&nz  
temp[r - j + 1] = data[j + mid]; `?qF$g9u~  
} n;Q7X>-f8`  
int a = temp[l]; g i-$Z FzB  
int b = temp[r]; 4*#18<u5  
for (i = l, j = r, k = l; k <= r; k++) { H8zK$!  
if (a < b) { V)-+Fd,=  
data[k] = temp[i++]; V-2(?auZd  
a = temp; |t&>5HM  
} else { _LUhZlw  
data[k] = temp[j--]; \0I_<  
b = temp[j]; ,RI Gc US  
} VUGmi]qd  
} I-)+bV G  
} 4Zddw0|2  
m@F`!qY~Y\  
/** ~&_z2|UXp  
* @param data T_ <@..C  
* @param l d-ZJL6-  
* @param i @|m/djN5x  
*/ oUr66a/[U  
private void insertSort(int[] data, int start, int len) { f4b/NG|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $q{!5-e  
} Y;Dp3v !  
} x7w4[QYw  
} xY8$I6  
} Jbg/0|1  
J26 VnK  
堆排序: A_ZY=jP   
 6f>{"'  
package org.rut.util.algorithm.support; 9Cp-qA%t  
|?xN\O^#}  
import org.rut.util.algorithm.SortUtil; EIAc@$4  
M,,bf[p$  
/** SrJGTuXg  
* @author treeroot (9 GWbB?  
* @since 2006-2-2 tBWrL{xLe  
* @version 1.0 rmm0/+jY  
*/ NiK4d{E&  
public class HeapSort implements SortUtil.Sort{ E\EsWb  
~.nmI&3  
/* (non-Javadoc) ~2N"#b&J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _pG-qK  
*/ t+ G#{n  
public void sort(int[] data) { A#<?4&  
MaxHeap h=new MaxHeap();  -p-ZzgQ  
h.init(data); cn3\kT*  
for(int i=0;i h.remove(); 'n]w"]|  
System.arraycopy(h.queue,1,data,0,data.length); jo@6?( *4  
} F6|]4H.3Q  
 RVmh6m  
private static class MaxHeap{ I)[DTCJ~  
(@VMH !3  
void init(int[] data){  vF+7V*<  
this.queue=new int[data.length+1]; n\D&!y[]F  
for(int i=0;i queue[++size]=data; vX"*4m>b?+  
fixUp(size); ~<5!?6Yt  
} "| g>'wM*  
} @%uUiP0  
@ioJ] $o7  
private int size=0; E_wCN&`[  
6l1jMm|= X  
private int[] queue; g2ixx+`?|:  
lU\ [aNs  
public int get() { ]^7@}Ce_  
return queue[1]; h"Q8b}$^)  
} wv1iSfW  
5m 4P\y^a  
public void remove() { =R|HV;9 h  
SortUtil.swap(queue,1,size--); ]|a g  
fixDown(1); ,PW'#U:  
} i)#dWFDTv  
file://fixdown P>D)7 V9Hh  
private void fixDown(int k) { mdDOvm:&  
int j; Sy_G,+$\  
while ((j = k << 1) <= size) {  'KL0@l  
if (j < size %26amp;%26amp; queue[j] j++; v$v-2y'%  
if (queue[k]>queue[j]) file://不用交换 -f^tE,-  
break; 6l x>>J!H  
SortUtil.swap(queue,j,k); eJ-xsH*8  
k = j; p)-^;=<B3  
} ,^< R{{{-A  
} & h)yro  
private void fixUp(int k) { SHgN~ Um  
while (k > 1) { ..5CC;B  
int j = k >> 1; +GN(Ug'R  
if (queue[j]>queue[k]) ]Q1yNtN  
break; _6hQ %hv8  
SortUtil.swap(queue,j,k); ;`{H!w[D  
k = j; 'GWN~5  
} 3(N$nsi  
} .! 3|&V'<  
P3=G1=47U  
} RSRS wkC  
{\1?ZrCI&  
} \?-<4Bc@  
Hzz %3}E  
SortUtil: yx[/|nZDC4  
'<)n8{3Q5w  
package org.rut.util.algorithm; X`K<>0.N  
lrE5^;/s1  
import org.rut.util.algorithm.support.BubbleSort; ? :%@vM  
import org.rut.util.algorithm.support.HeapSort; Pmx -8w  
import org.rut.util.algorithm.support.ImprovedMergeSort; I$G['` XX/  
import org.rut.util.algorithm.support.ImprovedQuickSort; gz9j&W.  
import org.rut.util.algorithm.support.InsertSort; JPHL#sKyz  
import org.rut.util.algorithm.support.MergeSort; z&\a:fJ&  
import org.rut.util.algorithm.support.QuickSort; iWkWR"ys y  
import org.rut.util.algorithm.support.SelectionSort; | YWD8 +  
import org.rut.util.algorithm.support.ShellSort; adcE'fA<_  
EME|k{W  
/** {S)6;|ua'  
* @author treeroot O=t_yy  
* @since 2006-2-2 Ll't>)  
* @version 1.0 qInR1r<  
*/ 9W5lSX#^;  
public class SortUtil { CK@@HSm}l  
public final static int INSERT = 1; WpP}stam/  
public final static int BUBBLE = 2; V f&zL Sgr  
public final static int SELECTION = 3; "HIRTE;&  
public final static int SHELL = 4; sl l\g  
public final static int QUICK = 5; PFjL1=7I  
public final static int IMPROVED_QUICK = 6; qe#tj/aZ  
public final static int MERGE = 7; 2]*OQb#O6e  
public final static int IMPROVED_MERGE = 8; M|h3Wt~7  
public final static int HEAP = 9; !f [_+CD  
TIDO@NwF  
public static void sort(int[] data) { Wn2NMXK  
sort(data, IMPROVED_QUICK); @Nx 9)  
} hn@08t G  
private static String[] name={ U7F!Z( 9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 90rol~M&  
}; =UQ3HQD  
\}b%E'+_T  
private static Sort[] impl=new Sort[]{ vvMT}-!  
new InsertSort(), !Ai@$tl[S  
new BubbleSort(), j,eo2HaL  
new SelectionSort(), Zu[su>\  
new ShellSort(), _V6ukd"B~  
new QuickSort(), b8UO,fY q  
new ImprovedQuickSort(), M6j y\<a  
new MergeSort(), d7upz]K9g  
new ImprovedMergeSort(), q|(HsLs  
new HeapSort() tyFzSrfc  
}; va@Lz&sAE%  
k4J+J.|  
public static String toString(int algorithm){ oG\Vxg*  
return name[algorithm-1]; S=5o < 1  
} lL3U8}vn  
+r2-S~f3N  
public static void sort(int[] data, int algorithm) { CA~-rv  
impl[algorithm-1].sort(data); ?6U0PChy  
} R-$!9mnr  
_Fl9>C"u  
public static interface Sort { U[MA)41  
public void sort(int[] data); )ez9"# MH'  
} 99QU3c<.  
3=j"=-=  
public static void swap(int[] data, int i, int j) { PJH&  
int temp = data; rV#ch(  
data = data[j]; /U9"wvg  
data[j] = temp; :$c |  
} ;.980+i1  
} ;e*!S}C,  
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