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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。 L eg)q7n  
插入排序: 0$RZ~  
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package org.rut.util.algorithm.support; +NML>g#F~z  
ra87~kj<  
import org.rut.util.algorithm.SortUtil; 8 xfn$  
/** Y0nnn  
* @author treeroot pq8XCOllXx  
* @since 2006-2-2 MBy0Ky  
* @version 1.0 k'O^HMAn!  
*/ *nb `DR  
public class InsertSort implements SortUtil.Sort{ <2b&AF{En  
r6 k/QZT  
/* (non-Javadoc) m]C|8b7Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iBCZx>![;  
*/ 6T-h("t  
public void sort(int[] data) { ]=X6* E*/E  
int temp; s98Jh(~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;#'YO1`gf3  
} ,1xX`:  
} #cHH<09 rl  
} 9o)sSaTx=  
@Z0?1+k  
} Q7<%_a  
Fjnp0:p9X  
冒泡排序: Q]44A+M]  
2x PkQOj3  
package org.rut.util.algorithm.support; %:yp>nm  
Eb 8vnB#  
import org.rut.util.algorithm.SortUtil; s &4k  
<x&0a$I  
/** ie<zc+*rW  
* @author treeroot JONfNb+  
* @since 2006-2-2 X#;n Gq)5  
* @version 1.0 Vq8G( <77  
*/ U.XvS''E  
public class BubbleSort implements SortUtil.Sort{ YUGE>"{  
fU/&e^, 's  
/* (non-Javadoc) n $Nw/Vm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e"=/zZH3  
*/ b/#SkxW#S  
public void sort(int[] data) { \<e?  
int temp; Q{+*F8%8V<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2@TgeV0Y[  
if(data[j] SortUtil.swap(data,j,j-1); ;_$Q~X  
} m1pge4*  
} )FLDCer  
} Iax-~{B3AY  
} `'W/uCpl  
[z:.52@!  
} HgGwV;W  
d_v]mfUF  
选择排序: ko-3`hX`  
KU]co4]8^s  
package org.rut.util.algorithm.support; Za[ ?CA  
0o2*X|i(  
import org.rut.util.algorithm.SortUtil; "Wz8f  
fAEgrw%Ti  
/** 7Shau%2C  
* @author treeroot q fc:%ks2  
* @since 2006-2-2 ye<b`bL2.  
* @version 1.0 GtuA94=!V&  
*/ `!Z0; qk  
public class SelectionSort implements SortUtil.Sort { %rFR:w`{  
x3>ZO.Q  
/* !+UU[uM  
* (non-Javadoc) UWW^g@d4  
* uOQ!av2"Rf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RGu`Jk  
*/ ]!c59%f=  
public void sort(int[] data) { r5RUgt  
int temp; J# >)+  
for (int i = 0; i < data.length; i++) { /b1+ ^|_  
int lowIndex = i; ]iU8n (5f  
for (int j = data.length - 1; j > i; j--) { )])nd "E  
if (data[j] < data[lowIndex]) { jo-2D[Q{  
lowIndex = j; uI9eUO  
} `e`}dgf0S|  
} D%`O.2T Y|  
SortUtil.swap(data,i,lowIndex); !1b}M/Wx  
} Ir\P[A  
} E ,kDy:  
Y9 /`w@"v  
} #ORZk6e  
$#z-b@s=B  
Shell排序: { 4 n  
4,,@o  
package org.rut.util.algorithm.support; *5QN:  
f7lt|.p  
import org.rut.util.algorithm.SortUtil; adcH3rV  
A`B>fI  
/** B_uhNLd  
* @author treeroot /~(T[\E<  
* @since 2006-2-2 J9%I&lu/  
* @version 1.0 exZgk2[0  
*/ 2jVvK"C  
public class ShellSort implements SortUtil.Sort{ H9\,;kM)  
"u.'JE;j  
/* (non-Javadoc) D_N0j{E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I[6ft_*  
*/ 8aqH;|fG}  
public void sort(int[] data) { q90 ~)n?  
for(int i=data.length/2;i>2;i/=2){ G$^u2wz.  
for(int j=0;j insertSort(data,j,i); <(!~s><.  
} \N%L-%^  
} %A3ci[$g  
insertSort(data,0,1); )krBj F.$  
} B,q)<z6<  
DL*&e|:q  
/** qyKI.X3n*  
* @param data *| 9:  
* @param j o5E5s9n  
* @param i GI<3L K\  
*/ z"D0Th`S6  
private void insertSort(int[] data, int start, int inc) { #ZC9=  
int temp; 43}uW, P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~} 02q5H  
} &s(mbpV  
} c(kYCVc   
} O[|_~v:^  
j0b>n#e7  
} _ea|E  8  
x MFo  
快速排序: U>i}C_7g  
{UFs1  
package org.rut.util.algorithm.support; *`_ 2uBz  
=E$B0^_2RC  
import org.rut.util.algorithm.SortUtil; ?{;7\1 [4  
IkuE|  
/** v@d]*TG  
* @author treeroot <^w4+5sT/  
* @since 2006-2-2 OJ1MV7&  
* @version 1.0 ;d .gVR_V  
*/ V2S HF  
public class QuickSort implements SortUtil.Sort{ Q-?6o  
m@y<wk(  
/* (non-Javadoc) >qU5(M_&L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }0C v J4  
*/ hRNnj  
public void sort(int[] data) { =3Ohy,5L  
quickSort(data,0,data.length-1); -uN M_|MO  
} =`k', V_  
private void quickSort(int[] data,int i,int j){ 1d!TU=*  
int pivotIndex=(i+j)/2; 6VtN4c .Q  
file://swap ]-sgzM]q  
SortUtil.swap(data,pivotIndex,j); ^&lkh@Y1q  
p4@0[z'  
int k=partition(data,i-1,j,data[j]); g_JSgH!4  
SortUtil.swap(data,k,j); Ie[DTy  
if((k-i)>1) quickSort(data,i,k-1); [7\x(W-:@>  
if((j-k)>1) quickSort(data,k+1,j); 2BO&OX|X  
vawS5b;  
} _/J`v`}G  
/** 3=("vR`!  
* @param data 'A,)PZL9i  
* @param i $T6+6<  
* @param j )SHB1U25{  
* @return ! mZWd'  
*/ =u`tlN5pOT  
private int partition(int[] data, int l, int r,int pivot) { wg4Ol*y'  
do{ ZUakW3f  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); oL7F^34;  
SortUtil.swap(data,l,r); h2 y<vO  
} E5IS<.  
while(l SortUtil.swap(data,l,r); 61}eB/;7  
return l; 3$9V4v@2  
} 2v<O}   
)S`=y-L$  
} 7$v_#ZE.H  
bs'hA@r  
改进后的快速排序: XM)  
5 FE&  
package org.rut.util.algorithm.support; f#\Nz>tOhE  
A*{CT>  
import org.rut.util.algorithm.SortUtil; +`ug?`_  
hGcu(kAC,  
/** 9TZ6c  
* @author treeroot eVzZfB-=4}  
* @since 2006-2-2 Y[s}?Xu]w#  
* @version 1.0 hlfdmh? /  
*/ {TvB3QOsj  
public class ImprovedQuickSort implements SortUtil.Sort { ovZ!}  
Mzw:c#  
private static int MAX_STACK_SIZE=4096; m8 6ztP)  
private static int THRESHOLD=10; z<_a4 ffR  
/* (non-Javadoc) 8v)iOPmDC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7#7AK}   
*/ & @${@  
public void sort(int[] data) { =&)R2pLs*  
int[] stack=new int[MAX_STACK_SIZE]; 7M~/[f7Z{  
pM~-o?  
int top=-1; buDz]ec b  
int pivot; S4pEBbV^n  
int pivotIndex,l,r; *=P*b|P"$  
* ).YU[i  
stack[++top]=0; y@r0"cvz9  
stack[++top]=data.length-1; J$d']%Dwb  
@p@b6iLpO  
while(top>0){ $$XeCPs 0  
int j=stack[top--]; "8L v  
int i=stack[top--]; Q\}Ck+d` a  
=y=MljEX  
pivotIndex=(i+j)/2; n7|,b- <  
pivot=data[pivotIndex]; VI-6t"l  
y[zjs^-vCv  
SortUtil.swap(data,pivotIndex,j); qC B{dp/  
#8$" 84&N.  
file://partition O=jzz&E+  
l=i-1; 4HpKKhv"  
r=j; iz0:  
do{ Ir=G\/A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {gxP_>  
SortUtil.swap(data,l,r); vpC?JXz=H  
} /t*Q"0X5  
while(l SortUtil.swap(data,l,r); ZZ T 9t#~  
SortUtil.swap(data,l,j); ]0g p.R  
=G !]_d0  
if((l-i)>THRESHOLD){ ^9><qKbO  
stack[++top]=i; |7Qe{  
stack[++top]=l-1; 13 %: 3W(  
} !L<z(dV|(  
if((j-l)>THRESHOLD){ rs,'vV-2\  
stack[++top]=l+1; hZw8*H^tP  
stack[++top]=j; }Syd*%BR[  
} N( f0,  
QP<.~^ao  
} yF1p^>*ak&  
file://new InsertSort().sort(data); qj4jM7  
insertSort(data); w"W;PdH)  
} x&r f]R  
/** lPrAx0m13%  
* @param data >x6)AH.  
*/ 5tk7H2K^<  
private void insertSort(int[] data) { *!j!o%MB  
int temp; $/$Hi U`.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6J">@+  
} F%.UpV,  
} ~=I:go  
} y0p\Gu;3j  
a!f71k r  
} ^Pah\p4bj  
+~=j3U  
归并排序: Y/?z8g'p  
LXZI|K[}k  
package org.rut.util.algorithm.support; 0g~Cdp  
G&t|aY-   
import org.rut.util.algorithm.SortUtil; 7#SfuZ0@  
x&"P^gh)  
/** U$S{j&?  
* @author treeroot }0f~hL24  
* @since 2006-2-2 KUpj.[5 qo  
* @version 1.0 3w"_Onwk  
*/ L$rr:^J  
public class MergeSort implements SortUtil.Sort{ RS@[ +!:t  
$sUn'62JlU  
/* (non-Javadoc) F)Z9Qlo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YQWq*o^:  
*/ .8GXpt^U(  
public void sort(int[] data) { "d /uyS$6  
int[] temp=new int[data.length]; PIdGis5G  
mergeSort(data,temp,0,data.length-1); < +k dL  
} '4,IGxIq  
A-J#$B  
private void mergeSort(int[] data,int[] temp,int l,int r){ OJhMM-  
int mid=(l+r)/2; )."dqq^ q  
if(l==r) return ; }Oqt=Wm  
mergeSort(data,temp,l,mid); kB%.i%9\\  
mergeSort(data,temp,mid+1,r); }8s&~f H  
for(int i=l;i<=r;i++){ gf>GK/^HH  
temp=data; ]h=5d09z  
} @= =)  
int i1=l; $*LBZcL  
int i2=mid+1; sZ7~AJ  
for(int cur=l;cur<=r;cur++){ V F b  
if(i1==mid+1) )eqF21\  
data[cur]=temp[i2++]; 6urU[t1  
else if(i2>r) 6'.)z ,ts  
data[cur]=temp[i1++]; `U|zNizO  
else if(temp[i1] data[cur]=temp[i1++]; 0cVxP)J+  
else mIPDF1= )  
data[cur]=temp[i2++]; KD\sU6  
} \ H#"  
} l?YO!$  
>YsM'.EFD  
} 7\ZSXQy1W  
g_A#WQyh\'  
改进后的归并排序: 2m} bddS  
e,Y<$kPV  
package org.rut.util.algorithm.support; .}uri1k"@k  
W$`#X  
import org.rut.util.algorithm.SortUtil; U0iV E+)Bt  
jw 5 U-zi  
/** t;-F]  
* @author treeroot X[f)0w%  
* @since 2006-2-2 ~B? Wg!  
* @version 1.0 2$`Y 4b3t  
*/ zL3zvOhu}  
public class ImprovedMergeSort implements SortUtil.Sort { `M. I.Z_  
%<'.c9u5  
private static final int THRESHOLD = 10; 6eA)d#  
I6gduvkXi4  
/* Xr'b{&  
* (non-Javadoc) jSRi  
* UX<)hvKj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HgBu:x?&  
*/ SqdI($F\:  
public void sort(int[] data) { -M_>]ubG  
int[] temp=new int[data.length]; xI/8[JW*  
mergeSort(data,temp,0,data.length-1); s:(z;cj/  
} 'KT(;Vof  
2-W y@\  
private void mergeSort(int[] data, int[] temp, int l, int r) { >oaL-01i  
int i, j, k; o^MoU2c  
int mid = (l + r) / 2; 3 TTQf f  
if (l == r) zSu,S4m_;  
return; K5t.OAA:  
if ((mid - l) >= THRESHOLD) E7_OI7C  
mergeSort(data, temp, l, mid); '#e T  
else {E7STLQ_%  
insertSort(data, l, mid - l + 1); H SGz-  
if ((r - mid) > THRESHOLD) ,A)Z .OWOq  
mergeSort(data, temp, mid + 1, r); ET 0(/Zz  
else -YmIRocx  
insertSort(data, mid + 1, r - mid); 2JcP4!RD  
3 `mtc@*  
for (i = l; i <= mid; i++) { >,I'S2_Zl  
temp = data; #6l(2d  
} O6ugN-d>  
for (j = 1; j <= r - mid; j++) { c@)?V>oe  
temp[r - j + 1] = data[j + mid]; &%8IBT  
} }$r]\v  
int a = temp[l]; N93R(x)%  
int b = temp[r]; xU6dRjYhH9  
for (i = l, j = r, k = l; k <= r; k++) { 412E7   
if (a < b) { hE$3l+  
data[k] = temp[i++]; |JP'j1 Ka  
a = temp; e@ $|xa")  
} else { M)AvcZNs  
data[k] = temp[j--]; h@\HPYi#.  
b = temp[j]; b!`Ze~V  
} U~t!   
} ]VE3u_kR  
} o~q.j_Sa  
-5|el3%)  
/** qDz[=6BF  
* @param data ir>+p>s.  
* @param l |F<%gJ  
* @param i vts"  
*/ c': 4e)  
private void insertSort(int[] data, int start, int len) { SBf=d<j 1)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q9B!0G.-bs  
} -mmQ]'.0  
} kC6Y?g  
} o_[~{@RoR  
} 2;3&&yK2b  
W- nS{v(  
堆排序: fwMYEj  
Ro<x#Uo  
package org.rut.util.algorithm.support; [McqwU/Q  
a" T+CA  
import org.rut.util.algorithm.SortUtil; csxn" Dz\  
.tyV =B:h  
/** @ 'N $5  
* @author treeroot 'zT7$ .L  
* @since 2006-2-2 e7\gd\  
* @version 1.0 p=Le oc1  
*/ UvB\kIH  
public class HeapSort implements SortUtil.Sort{ ]#rV]As  
E}a.qM'  
/* (non-Javadoc) 4^4T#f2=e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B4+c3M\$V  
*/ Q u7ML]e?z  
public void sort(int[] data) { 5 wN)N~JE  
MaxHeap h=new MaxHeap(); PYY<  
h.init(data); ! r/~D |  
for(int i=0;i h.remove(); G\,B*$3   
System.arraycopy(h.queue,1,data,0,data.length); AN[pjC<  
} pS7y3(_  
61OlnmvE  
private static class MaxHeap{ 8x7TK2r  
qe(C>qjMbG  
void init(int[] data){ '&K' 0qG  
this.queue=new int[data.length+1]; C=U4z|Ym  
for(int i=0;i queue[++size]=data; WX_g  
fixUp(size); #UI`+2w  
} m(kv:5<>  
} R\#5;W^  
3pL4 Zhf  
private int size=0; QR8]d1+GV  
nGc'xQy0  
private int[] queue; 6cbV[ !BL  
TeR bW  
public int get() { !bnnUCTb\  
return queue[1]; H!6&'=c{k  
} 2e3AmR@*  
Az#kE.8b*A  
public void remove() { g}a+%Obb  
SortUtil.swap(queue,1,size--); IDh`*F  
fixDown(1); VsK8:[Al  
} HJpx,NU'  
file://fixdown ,nPnH1vb  
private void fixDown(int k) { a[sdYZ  
int j; US9@/V*2  
while ((j = k << 1) <= size) { M\IdQY-c  
if (j < size %26amp;%26amp; queue[j] j++; yOb']  
if (queue[k]>queue[j]) file://不用交换 EqIs&){  
break; FJ?]|S.?,  
SortUtil.swap(queue,j,k); Fy$ C._C$  
k = j; 7*Zm{r@u  
} L5 Ai  
} (R RRG;*n#  
private void fixUp(int k) { (r}StR+  
while (k > 1) { n%~r^ C_  
int j = k >> 1; qxZf!NX5  
if (queue[j]>queue[k]) rfSEL 57'  
break; Py+ B 2G|  
SortUtil.swap(queue,j,k); =>A}eR1Y   
k = j; 1}ifJ~)5S  
} F%%mcmHD#  
} I {%( G(  
JlEfUg#*  
} 1UB.2}/:  
`G*fx=N  
} ;9J6)zg !n  
~52'iI)Mw  
SortUtil: < mFU T  
Eb29tq  
package org.rut.util.algorithm; "(';UFa  
)RWukr+  
import org.rut.util.algorithm.support.BubbleSort; jgkY^l  
import org.rut.util.algorithm.support.HeapSort; vJx( lU`Y  
import org.rut.util.algorithm.support.ImprovedMergeSort; j[t2Bp  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^ ~Tn[w W_  
import org.rut.util.algorithm.support.InsertSort; N1vA>(2A  
import org.rut.util.algorithm.support.MergeSort; ZR{YpLFQ  
import org.rut.util.algorithm.support.QuickSort; $V/Ke  
import org.rut.util.algorithm.support.SelectionSort; b!"FM/ %  
import org.rut.util.algorithm.support.ShellSort; U2Ky4UFm  
c+whpQ=01  
/** hOdU%  
* @author treeroot v`6vc)>8  
* @since 2006-2-2 @bnw$U`+  
* @version 1.0 YNp-A.o W@  
*/ 0B~x8f  
public class SortUtil { u:wijkx  
public final static int INSERT = 1; MdTu722  
public final static int BUBBLE = 2; ;2sP3!*  
public final static int SELECTION = 3; KWi|7z(L=  
public final static int SHELL = 4; %S>6Q^B  
public final static int QUICK = 5; C 8d9 (u  
public final static int IMPROVED_QUICK = 6; PdRDUG{Jy  
public final static int MERGE = 7; vP%:\u:{  
public final static int IMPROVED_MERGE = 8; #9qX:*>h   
public final static int HEAP = 9; z> N73 u  
2Z`Jr/  
public static void sort(int[] data) { Ms+SJ5Lg  
sort(data, IMPROVED_QUICK); !rG-[7K  
} 6eNBldP!  
private static String[] name={ bp}]'NA  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ngm/5Lc  
}; 8'v:26   
n# FkgXP$  
private static Sort[] impl=new Sort[]{ ._.Qf<7  
new InsertSort(), Yb:F,d-Ya  
new BubbleSort(), swLNNA.  
new SelectionSort(), 'Q.5` o  
new ShellSort(), 0AhUH| ]  
new QuickSort(), 0p\Kf(|E*6  
new ImprovedQuickSort(), IZd~Am3f  
new MergeSort(), sLK$H|%>m  
new ImprovedMergeSort(), *WWDwY@!u  
new HeapSort() =">0\#  
}; lr -+|>M)  
=65XT^  
public static String toString(int algorithm){ WaE%g   
return name[algorithm-1]; z`]:\j'O3"  
} N Zwi3  
Ov.oyke4  
public static void sort(int[] data, int algorithm) { J*^ i=y  
impl[algorithm-1].sort(data); eX0 [C0#  
} <LX-},?P  
d zV2;  
public static interface Sort { ]XYD2fR2qA  
public void sort(int[] data); 98UI]? 4  
} HisH\z/i5)  
3h.,7,T  
public static void swap(int[] data, int i, int j) { AeEdqX)  
int temp = data; 71[?AmxV  
data = data[j]; @u/CNx,`X  
data[j] = temp; 9;{(.K  
} c8mh#T bl  
} .gC.T`/m  
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