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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。 y!R9)=/M  
插入排序: _K'Y`w']  
\+Y=}P>  
package org.rut.util.algorithm.support; ;pOV; q3j  
"*l{ m2"  
import org.rut.util.algorithm.SortUtil; v3t<rv  
/** KU0Ad);e  
* @author treeroot BI*0JKQu  
* @since 2006-2-2 T \- x3i  
* @version 1.0 &0|Z FXPd  
*/ 1uG)U)y/Q  
public class InsertSort implements SortUtil.Sort{ #r?[@aJ  
\pTC[Ry1  
/* (non-Javadoc) PU1YR;[Fe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ya^8mp-  
*/ C\ Yf]J  
public void sort(int[] data) { fi~@J`  
int temp; yENAcsv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /?XI,#j3kM  
} (. YSs   
} EL z5P}L6  
} :)B1|1  
}0@@_Y]CC  
} s?->2gxhx  
i1KjQ1\a+  
冒泡排序: S# baOO  
P0hr=/h4  
package org.rut.util.algorithm.support; ~7g$T Ae{  
/Ix5`Q)  
import org.rut.util.algorithm.SortUtil; EK0~ 3HSZ  
60A!Gob  
/** 4t/?b  
* @author treeroot r%X M`;bQX  
* @since 2006-2-2 W7_m,{q  
* @version 1.0 VnB HQ.C  
*/ ;XjXv'  
public class BubbleSort implements SortUtil.Sort{ B^GMncZO  
~Jw84U{$  
/* (non-Javadoc) 3K/ tB1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |F<iu2\  
*/ mSZg;7DE3*  
public void sort(int[] data) { <u0}&/  
int temp; ?vI2mr a+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ o~"Y_dLsW  
if(data[j] SortUtil.swap(data,j,j-1); 5_L,7\5#  
} vZ$E [EG}  
} FyPG5-  
} qIQ 61><  
} /Qef[$!(  
@H+L1H%9n  
} 9(z) ^ G  
[E6ceX0  
选择排序: e00 }YWf%  
hDZyFRg  
package org.rut.util.algorithm.support; Ef ?|0Gm  
lVd-{m)  
import org.rut.util.algorithm.SortUtil; ; 2V$`k  
\*b  .f  
/** YN<vOv  
* @author treeroot !dh:jPpKq  
* @since 2006-2-2 Ct~j/.  
* @version 1.0 zOFHdd ,"g  
*/ A<TYt M  
public class SelectionSort implements SortUtil.Sort { Yh@2m9  
A8ef=ljM?  
/* k4u/v n`&r  
* (non-Javadoc) qP##C&+#q  
* J65:MaS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m8R=wb :  
*/ j)YX=r;xM  
public void sort(int[] data) { "_dg$j`Y&&  
int temp; y^nT G  
for (int i = 0; i < data.length; i++) { 1=,2i)  
int lowIndex = i; m}oR*<.  
for (int j = data.length - 1; j > i; j--) { f/IQ2yT-:D  
if (data[j] < data[lowIndex]) { f5un7,m  
lowIndex = j; }YM\IPsPu  
} e<a*@ P,  
} :& :P4Y1 E  
SortUtil.swap(data,i,lowIndex); -%%Xx5D  
} Sj|tR[SAoD  
} EEK!'[<,sE  
pYr+n9)^  
} zks7wt]A  
L Yd:S  
Shell排序: Y`4 LMK[]  
J=: \b  
package org.rut.util.algorithm.support; Q^3{L\6_  
S&XlMu  
import org.rut.util.algorithm.SortUtil; 6\I1J= C  
6J}Yr5oD  
/** 6vps`k$,~  
* @author treeroot =>evkaj  
* @since 2006-2-2 mXS]SE  
* @version 1.0 XK@&$~iA3  
*/ YX)Rs Vf  
public class ShellSort implements SortUtil.Sort{ r@vt.t0#  
XOI"BLd  
/* (non-Javadoc) Kn=EDtg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .j^BWr  
*/ T{m) = (q  
public void sort(int[] data) { $0un`&W  
for(int i=data.length/2;i>2;i/=2){ S ~fz  
for(int j=0;j insertSort(data,j,i); =2=rPZw9  
} "$o>_+U  
} g)TZ/,NQ{  
insertSort(data,0,1); CxJ3u  
} o,c}L9nvt  
}S?"mg& V  
/** Z[] 8X@IPe  
* @param data zF>;7'\x  
* @param j B]()  
* @param i #>,E"-]f  
*/ 6aHD?a o  
private void insertSort(int[] data, int start, int inc) { +/RR!vG,  
int temp; tK/,U =+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /je $+  
} Rf>)#hn%  
} JN`$Fq+  
} Yo' Y-h#  
p=E#!cn3  
} P2aFn=f  
k0ai#3iJ  
快速排序: =H;'.!77Hx  
i|AWaG)  
package org.rut.util.algorithm.support; p'%S{v@5((  
-LUZ7,!/>o  
import org.rut.util.algorithm.SortUtil; |3T2}ohrr  
[+R_3'aK  
/** X;UEq]kcmn  
* @author treeroot ){'<67dK  
* @since 2006-2-2 /d:hW4}<}.  
* @version 1.0 Y_jc*S  
*/ oPni4^g i  
public class QuickSort implements SortUtil.Sort{ zaLPPm&f  
}+pwSjsno  
/* (non-Javadoc) D& o\q68W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x0ipk}  
*/ +L.D3  
public void sort(int[] data) { K?! W9lUq  
quickSort(data,0,data.length-1); _E'}8.#{  
} V]+y*b.60  
private void quickSort(int[] data,int i,int j){ cHT\sJo`l  
int pivotIndex=(i+j)/2; y {Bajil  
file://swap  +PADy8  
SortUtil.swap(data,pivotIndex,j); %Y=r5'6l  
|?Edk7`  
int k=partition(data,i-1,j,data[j]); "a~r'+'<  
SortUtil.swap(data,k,j); 6k>5+-&_  
if((k-i)>1) quickSort(data,i,k-1); ^-- R#$X  
if((j-k)>1) quickSort(data,k+1,j); cb0rkmO  
Ay 4P_>^  
} ")vtS}Ekt  
/** /!?Tv8TPp  
* @param data ;|?_C8  
* @param i @{_X@Wv4iV  
* @param j 4;AQ12<[1  
* @return O< /b]<[  
*/ kBrA ?   
private int partition(int[] data, int l, int r,int pivot) { F!u)8>s+z{  
do{ IO 0nT  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1y1:<t  
SortUtil.swap(data,l,r); 'kC#GTZi  
} #\^=3A|b  
while(l SortUtil.swap(data,l,r); phf{b+'#X  
return l; '/6f2[%Y"  
} &I8DK).M+  
`5wiXsNjLY  
} w6X:39d  
4^:dmeMZ`  
改进后的快速排序: -.M J3  
oi,KA  
package org.rut.util.algorithm.support;  1hi, &h  
glU9A39qx?  
import org.rut.util.algorithm.SortUtil; ^AJ 2Y_}v  
V?"U)Y@Y  
/** f"*4R kG  
* @author treeroot =P9rOK=  
* @since 2006-2-2 k \T]*A  
* @version 1.0 G<<; a  
*/ >]gB@tn[  
public class ImprovedQuickSort implements SortUtil.Sort { LiQH!yHW  
;}U]^LT=  
private static int MAX_STACK_SIZE=4096; 8J$1N*J|  
private static int THRESHOLD=10; *aWh]x9TlU  
/* (non-Javadoc) %r.C9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |;)_-=L0P  
*/ >yn]h4M  
public void sort(int[] data) { lt:&lIW,3  
int[] stack=new int[MAX_STACK_SIZE]; N}7b^0k  
0n`Temb/  
int top=-1; u?MhK# Mr  
int pivot; Hf_ pe  
int pivotIndex,l,r; sn^ 3xAF  
.|07IH/Di{  
stack[++top]=0; ~Y*.cGA  
stack[++top]=data.length-1; Ank_;jo  
dz/fSA  
while(top>0){ Cu24xP`  
int j=stack[top--]; uaKbqX  
int i=stack[top--]; V( 0Y   
`RE>gX  
pivotIndex=(i+j)/2; G9QvIXRi  
pivot=data[pivotIndex]; H*3u]Ebh  
Q#ksf h!D  
SortUtil.swap(data,pivotIndex,j); PHI c7*_  
*?uUP  
file://partition ;'V[8`Z@  
l=i-1; <b _K*]Z  
r=j; -X%t wy=  
do{ GIpYx`mHi  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y&8`NS#_p?  
SortUtil.swap(data,l,r); -@#],s7  
} xy!E_CuC$  
while(l SortUtil.swap(data,l,r); t5K#nRd Z:  
SortUtil.swap(data,l,j); _:tS-Mx@5  
|4j6}g\  
if((l-i)>THRESHOLD){ Z+);}>-5  
stack[++top]=i; (0LA.aBIf  
stack[++top]=l-1; 'sa)_?Hy  
} #Y-_kQV*  
if((j-l)>THRESHOLD){ *)^ ZUk  
stack[++top]=l+1; d$+0 ;D4E  
stack[++top]=j; dJ])`S  
} :PY8)39@K  
9 4lt?|3=  
} <'sm($.2  
file://new InsertSort().sort(data); PlA#xnq#  
insertSort(data); o(l%k},a  
} s%Ph  
/** sIaehe'B  
* @param data udr|6EjD.  
*/ b.[9Adi >  
private void insertSort(int[] data) { }.9a!/@Aj  
int temp; \vV]fX   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u 6l)s0Q  
} $[MAm)c:]{  
} KOXG=P0  
} &K[~Ab_  
o::9M_;  
} 4%_c9nat  
MzKl=G  
归并排序: 4A(h'(^7A  
Tw` dLK?  
package org.rut.util.algorithm.support; &LB`  
Ic!x y  
import org.rut.util.algorithm.SortUtil; 2Y[n  
Y*#TfWv:  
/** hmuhq:<f  
* @author treeroot 8JR&s  
* @since 2006-2-2 :ntAU2)H  
* @version 1.0 #FRm<9/j  
*/ B]gyj  
public class MergeSort implements SortUtil.Sort{ W)  
#{?RE?nD  
/* (non-Javadoc) FS @55mQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @t$yg$Q?[  
*/ /.A"HGAk  
public void sort(int[] data) { ZXiJ5BZ  
int[] temp=new int[data.length]; ' \>k7?@  
mergeSort(data,temp,0,data.length-1); *tR'K#:&g!  
} ?/sn"~"  
>z fx2wh\a  
private void mergeSort(int[] data,int[] temp,int l,int r){ A8S9HXL  
int mid=(l+r)/2; 3syA$0TZt  
if(l==r) return ; a;~< iB;3"  
mergeSort(data,temp,l,mid); /#eS3`48  
mergeSort(data,temp,mid+1,r); "66#F  
for(int i=l;i<=r;i++){ &P35\q   
temp=data; r #w7qEtD  
} /6y{ ?0S  
int i1=l; $1zWQJd[-  
int i2=mid+1; !SGRK01  
for(int cur=l;cur<=r;cur++){ x=x%F;  
if(i1==mid+1) +s`cXTlFrk  
data[cur]=temp[i2++]; T4ugG?B*  
else if(i2>r) ta x:9j|~  
data[cur]=temp[i1++]; Lrr(7cH,  
else if(temp[i1] data[cur]=temp[i1++]; eIlovq/X  
else LZs'hA<L  
data[cur]=temp[i2++]; oGg<s3;UND  
} ]E DC s?,  
} L 9cXgd  
mC0Dj O  
} D97 vfC  
SXJjagAoML  
改进后的归并排序: 7,alZ"%W  
4,Uqcw?!F'  
package org.rut.util.algorithm.support; {36N=A  
{:n1|_r4Z  
import org.rut.util.algorithm.SortUtil; seP h%Sa_  
TA:#K  
/** gCVOm-*:  
* @author treeroot $cm 9xW&  
* @since 2006-2-2 F1M:"-bda  
* @version 1.0 9 p^gF2?k  
*/ ty%,T.@e  
public class ImprovedMergeSort implements SortUtil.Sort { ^4<&"aoo  
}m Ub1b  
private static final int THRESHOLD = 10; h>!9N dzG  
/Q:mUd  
/* mWn0"1C  
* (non-Javadoc) plJUQk  
* r/P}j4)b7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `@0AGSzUv  
*/ }&6:0l$4!  
public void sort(int[] data) { "d}ey=$h4  
int[] temp=new int[data.length]; fuF{8-ua  
mergeSort(data,temp,0,data.length-1); (#z6w#CU(  
} ^7;s4q  
08%Bx~88_%  
private void mergeSort(int[] data, int[] temp, int l, int r) { @+y,E-YTdV  
int i, j, k; m] -cRf)9  
int mid = (l + r) / 2; N:+d=G`x  
if (l == r) `YMd0*  
return; SdnO#J}{  
if ((mid - l) >= THRESHOLD) BD^1V( I/  
mergeSort(data, temp, l, mid); 2vsV :LS.  
else /?z3*x  
insertSort(data, l, mid - l + 1); 6'<[QoW];  
if ((r - mid) > THRESHOLD) G!%8DX5  
mergeSort(data, temp, mid + 1, r); J ^<uo (  
else ub`zS-vb  
insertSort(data, mid + 1, r - mid); Jm< uE]9  
jPZpJ:  
for (i = l; i <= mid; i++) { ]0|A\bE\S  
temp = data; 1_Av_X  
} B/!/2x  
for (j = 1; j <= r - mid; j++) { )DlKeiK  
temp[r - j + 1] = data[j + mid]; fYh<S  
} N&Ho$,2s  
int a = temp[l]; )t\aB_ =  
int b = temp[r]; K" X" 2c1o  
for (i = l, j = r, k = l; k <= r; k++) { M,bs`amz  
if (a < b) { 2\T\p<_20  
data[k] = temp[i++]; `QW=<Le?  
a = temp; 5nsoWqnE8  
} else { >&7^yXS  
data[k] = temp[j--]; ?`O^;f  
b = temp[j]; _G25$%/LU  
} E7aG&K  
} n"Bc2}{  
} :rjfAe=s  
apfr>L3  
/** iXvrZofE  
* @param data (vchZn#  
* @param l +"k?G  
* @param i rcY &n^:  
*/ l~DIV$>,Z  
private void insertSort(int[] data, int start, int len) { S3E5^n\\  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GCfVH?Vx  
} R-1MD  
} mF jM6pmo  
} AS;qJ)JfzQ  
} |')PQ  
ha 2=O  
堆排序: %:;g|PC  
P*VZ$bUe5@  
package org.rut.util.algorithm.support; ~<_WYSzS  
-%^'x&e  
import org.rut.util.algorithm.SortUtil; pv-c>8Wb6  
DL!%Np?`  
/** 2' ^7G@%  
* @author treeroot K,%CE ].  
* @since 2006-2-2 d2-oy5cEB  
* @version 1.0 ('Uj|m}9  
*/ hCd? Kti  
public class HeapSort implements SortUtil.Sort{ eR6vO5to  
<yBa5m@/  
/* (non-Javadoc) w1aoEo"S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ylQj2B,CB  
*/ SO[ u4b_"h  
public void sort(int[] data) { xk7Dx}  
MaxHeap h=new MaxHeap(); *kYGXT,f]  
h.init(data); n 9`]}bnX  
for(int i=0;i h.remove(); woBx609Aak  
System.arraycopy(h.queue,1,data,0,data.length); ;DR5?N/a  
} af9KtX+  
9|v%bO  
private static class MaxHeap{ }^p<Y5{b  
oM Z94 , 3  
void init(int[] data){ |\G^:V[.  
this.queue=new int[data.length+1]; 1+XM1(|c`  
for(int i=0;i queue[++size]=data; cGdYfi  
fixUp(size); (}.MB3`#C  
} p3{Ff5FZ  
} DZ\K7-  
N@}h  
private int size=0; SPt/$uYJ  
|g!d[ct]  
private int[] queue; N2duhI6  
V %D1Q}X  
public int get() { nb<oo:^  
return queue[1]; jC{KI!kPt  
} TO"Md["GI  
83gWA>Odh  
public void remove() { 6o(IL-0]c  
SortUtil.swap(queue,1,size--); NRp  
fixDown(1); A>2_I)  
} NMf#0Nz-  
file://fixdown g=@d!]Z~[  
private void fixDown(int k) { ^+CHp(X  
int j; ~!8j,Bqs+z  
while ((j = k << 1) <= size) { QKlsBq  
if (j < size %26amp;%26amp; queue[j] j++; f86Z #%  
if (queue[k]>queue[j]) file://不用交换 >][D"  
break; cBZEyy&  
SortUtil.swap(queue,j,k); >$E;."a  
k = j; g<.Is V  
} ci$J?a  
} Ef28  
private void fixUp(int k) { *KY:U&*  
while (k > 1) { jnT Tj l  
int j = k >> 1; &r4|WM/ec  
if (queue[j]>queue[k]) s*<T'0&w0S  
break; )`R}@(r.  
SortUtil.swap(queue,j,k); %!(C?k!\  
k = j; PM#3N2?|E  
} /WE\0bf  
} *vuI'EbM  
5rdB>8W  
} 1PUZB`"3  
,p#B5Dif/  
} ,I x>.^|  
/w(g:e  
SortUtil: {tY1$}R  
kmc"`Ogotw  
package org.rut.util.algorithm; "#E<Leh'  
/W BmR R  
import org.rut.util.algorithm.support.BubbleSort; QDJ "X  
import org.rut.util.algorithm.support.HeapSort;  QSY>8P  
import org.rut.util.algorithm.support.ImprovedMergeSort; $/ IFSB9  
import org.rut.util.algorithm.support.ImprovedQuickSort; +,LWyvc'  
import org.rut.util.algorithm.support.InsertSort; 4_ U"M@  
import org.rut.util.algorithm.support.MergeSort; dgoAaS2M  
import org.rut.util.algorithm.support.QuickSort; OoH-E.lp  
import org.rut.util.algorithm.support.SelectionSort; sVw:d _ E  
import org.rut.util.algorithm.support.ShellSort; !3Pmjip  
Z/ jmi  
/** ?{^_z_,  
* @author treeroot -mG`* 0  
* @since 2006-2-2 p$'S\W|  
* @version 1.0 vJ^~J2#5  
*/ 'g,h  
public class SortUtil { ^4^N}7>5  
public final static int INSERT = 1; BO G.[?yx  
public final static int BUBBLE = 2; _avf%OS  
public final static int SELECTION = 3; |. 0~'  
public final static int SHELL = 4; \WE&5 9G  
public final static int QUICK = 5; ~U"m"zpLP  
public final static int IMPROVED_QUICK = 6; &s vg<UZ  
public final static int MERGE = 7; bHv"!  
public final static int IMPROVED_MERGE = 8; ?{B5gaU9F  
public final static int HEAP = 9; p8%qU>~+4  
n-" (~  
public static void sort(int[] data) { ka\{?:r,8  
sort(data, IMPROVED_QUICK); W3/bM>1  
} $KGMAg/H  
private static String[] name={ fPUr O  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" VYkh@j  
}; Z,E$4Z  
C:5- h(#  
private static Sort[] impl=new Sort[]{ Fw\Z[nh  
new InsertSort(), =zK4jiM1  
new BubbleSort(), 4hwb] Yz  
new SelectionSort(), "N6HX*  
new ShellSort(), "j,vlG  
new QuickSort(), 3rH}/`d4  
new ImprovedQuickSort(), @GQfBV|3  
new MergeSort(), xS/W}-dPv  
new ImprovedMergeSort(), s!/lQo5/  
new HeapSort() `M6"=)twu  
}; >aO.a[AM  
 c2M  
public static String toString(int algorithm){ {&IB[Y6  
return name[algorithm-1]; ;98b SR/  
} o&E8<e  
TsK!36cg  
public static void sort(int[] data, int algorithm) { [-_{3qq<e  
impl[algorithm-1].sort(data); =IsmPQKi  
} xBTx`+%WS  
D`a6D  
public static interface Sort { }]o8}$&(  
public void sort(int[] data); \j`0 f=z_  
} -|#{V.G3'  
ZPG,o5`%  
public static void swap(int[] data, int i, int j) { :.e'?a  
int temp = data; ^rVHaI  
data = data[j]; U`qC.s(L  
data[j] = temp; hFi gY\$m  
} znsQ/[  
} w8 :[w  
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