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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*3^kwL{U  
插入排序: >]B_+r0m^  
#}6~>A  
package org.rut.util.algorithm.support; P=_W{6  
rXSw@pqZ&  
import org.rut.util.algorithm.SortUtil; hB 'rkjt  
/** k'v+/6 Y  
* @author treeroot mb'{@  
* @since 2006-2-2 jz3f{~   
* @version 1.0 3 JlM{N6+  
*/ pl}W|kW}  
public class InsertSort implements SortUtil.Sort{ nF-l4=  
B8wGWZ@  
/* (non-Javadoc) 5-4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v%#@.D!)  
*/ af[dkuv  
public void sort(int[] data) { ndyI sR  
int temp; ./ tZ*sP:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9AWP` ~l`  
} ']!wc8m1"  
} [$6YPM>Ee  
} ;Gp9 ?0  
U4"&T,'lTL  
} )REegFN@  
55b/giX  
冒泡排序: ;Gu(Yoa}y  
"MPS&OK  
package org.rut.util.algorithm.support; = g%<xCp  
8&hxU@T~  
import org.rut.util.algorithm.SortUtil; AO-~dV  
9G1ZW=83  
/** P(\x. d:  
* @author treeroot vqF=kB"P  
* @since 2006-2-2 F.Bij8\  
* @version 1.0 }L`Z<h*H  
*/ X&Ospl@H  
public class BubbleSort implements SortUtil.Sort{ <UIE-#  
>y!R}`&0^t  
/* (non-Javadoc) >TGc0 z+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )eX{a/Be  
*/ t@2MEo  
public void sort(int[] data) { 5HB*  
int temp; 5rtE/ {A  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RdjoVCf  
if(data[j] SortUtil.swap(data,j,j-1); \+ Ese-la  
} 7OPRf9+o  
} xyV7MW\?w  
} 1k%HGQM{  
} Ea[SS@'R  
C szZr>Z  
} 1vh[sKv9%  
VYK%0S9yH[  
选择排序: A/Sj>Y1j  
&[ |Z2}  
package org.rut.util.algorithm.support; 16ip:/5  
{\h:k\k  
import org.rut.util.algorithm.SortUtil; &`'@}o>2  
?wIw$p>wT  
/** wgQx.8 h>  
* @author treeroot :VR% I;g;  
* @since 2006-2-2 f]Zj"Tt-  
* @version 1.0 Yru,YA   
*/ *aYuuRx  
public class SelectionSort implements SortUtil.Sort { ^ %1u3  
#/t+h#jG  
/* {XXnMO4uR;  
* (non-Javadoc) bdBLfWe  
* ;e2D}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I,/E.cRV<  
*/ y :QnK0  
public void sort(int[] data) { LCSJIt  
int temp; uesIkJ^Q[  
for (int i = 0; i < data.length; i++) { j3R}]F'C*  
int lowIndex = i; =QwT)KRB%  
for (int j = data.length - 1; j > i; j--) { dA#'HMh@  
if (data[j] < data[lowIndex]) { Rx@0EPV  
lowIndex = j; FZ FPzH  
} Lu71Qdu09  
} qnU`Q{  
SortUtil.swap(data,i,lowIndex); !Ks<%; rb  
} (2 P&@!|  
} ACEVd! q  
a 4? c~bs  
} RRpCWc Iv"  
yx<-M  
Shell排序: Gg^gK*D  
pe!"!xJE  
package org.rut.util.algorithm.support; B?d+^sz]  
; Yt'$D*CP  
import org.rut.util.algorithm.SortUtil; `@&WELFv{  
]0")iY_  
/** EO/TuKt  
* @author treeroot ,H/BW`rL]#  
* @since 2006-2-2 u&j_;Y!6  
* @version 1.0 $b )k  
*/ #Fh:z4  
public class ShellSort implements SortUtil.Sort{ =s:Z-*vy!  
V|2[>\Cv  
/* (non-Javadoc) 3'55!DE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h\6 t\_^\  
*/ 0<Rq  
public void sort(int[] data) { Q^'xVS_.  
for(int i=data.length/2;i>2;i/=2){ #,SPV&  
for(int j=0;j insertSort(data,j,i); Jn\>S z(96  
} ka$la;e3  
} 1/=6s5vS}  
insertSort(data,0,1); m>DJ w7<  
} SS&G<3Ke  
@f#6Nu  
/** o#-^Lg&  
* @param data ^HWa owy=  
* @param j RV@mAw.T  
* @param i NC"X{$o2  
*/ ,H] S-uK~  
private void insertSort(int[] data, int start, int inc) { (Wn^~-`=+  
int temp; Xz'o<S  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p-6T,')  
} 5[`f(;  
} *n9=Q9  
} ^= qL[S6/M  
M?qvI  
} yh+.Yn=+  
=]LAL w  
快速排序: eB<R"Yvi  
EuKkIr/(  
package org.rut.util.algorithm.support; |Syulus  
N1JM[<PP  
import org.rut.util.algorithm.SortUtil; 4=l$wg~;  
76cT}l&.h8  
/** Md*.q^:  
* @author treeroot 1(WBvAPS  
* @since 2006-2-2 50Ov>(f@7  
* @version 1.0 C|S~>4`  
*/ `>HrO}x^  
public class QuickSort implements SortUtil.Sort{ N}'2GBqfU4  
I$ ?.9&.&  
/* (non-Javadoc) m :2A[H+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p|w0 i[hc  
*/ D1wONss  
public void sort(int[] data) { 0>ce~KU  
quickSort(data,0,data.length-1); -]Aqt/w"l  
} -T>i5'2)  
private void quickSort(int[] data,int i,int j){ +DYsBCVbag  
int pivotIndex=(i+j)/2; Eu[/* t+l  
file://swap T@ zV   
SortUtil.swap(data,pivotIndex,j); 8M7Bw[Q1  
Wfsd$kN6{  
int k=partition(data,i-1,j,data[j]); |u#7@&N1  
SortUtil.swap(data,k,j); d_Z?i#r0l  
if((k-i)>1) quickSort(data,i,k-1); =F46v{la  
if((j-k)>1) quickSort(data,k+1,j); ;esOe\z jE  
HDj260a  
} Lwo9s)j<e  
/** YLb$/6gj6  
* @param data 6P0 2=  
* @param i PeJIa %iE  
* @param j !WTL:dk  
* @return ?DKY;:dZF  
*/ xk s M e  
private int partition(int[] data, int l, int r,int pivot) { R|]n;*y  
do{ {vp*m :K  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [G"Va_A8  
SortUtil.swap(data,l,r); 5Rae?* XH  
} kTm}VTr 1  
while(l SortUtil.swap(data,l,r); C~04#z_$  
return l; 2u(G:cR  
} gvFCsVv<{  
7Q?^wx  
} [-VIojs+u  
@jKB[S;JSn  
改进后的快速排序: &W*^&0AV  
f%rZ2h)  
package org.rut.util.algorithm.support; wotw nE  
)D&xyC}  
import org.rut.util.algorithm.SortUtil; |u+!CR  
A5Lzd  
/** FzG>iC}  
* @author treeroot %RzCJxT  
* @since 2006-2-2 EKEJ9Y+47H  
* @version 1.0 'i4L.&  
*/ l\ Vr D2j8  
public class ImprovedQuickSort implements SortUtil.Sort { $t0JfDd6Ky  
_7'5IA  
private static int MAX_STACK_SIZE=4096; _Sl3)  
private static int THRESHOLD=10; &mm!UJ  
/* (non-Javadoc) QSOG(}w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \q^:$iY~  
*/ ;?%_jB$P  
public void sort(int[] data) { WJN) <+d  
int[] stack=new int[MAX_STACK_SIZE]; #Sg"/Cc  
Yh; A)N p  
int top=-1; KC nm_4  
int pivot; 6i@* L\ Dl  
int pivotIndex,l,r; -s]@8VJA"  
/dHIm`. Z  
stack[++top]=0; } g%v<'K  
stack[++top]=data.length-1; |mcc?*%t8  
pk0{*Z?@  
while(top>0){ ^%!#Q].  
int j=stack[top--]; 0e1-ZP CDj  
int i=stack[top--]; ~EU\\;1Rmq  
Gr#WD=I-}  
pivotIndex=(i+j)/2; ;3o7>yEv  
pivot=data[pivotIndex]; <6X*k{  
<(i5hmuVd  
SortUtil.swap(data,pivotIndex,j); ^,aI2vC  
ER0B{b  
file://partition B:Hr{%O  
l=i-1; c:""&>Z  
r=j; < pZwM  
do{  s;-AZr)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lX"6m}~D  
SortUtil.swap(data,l,r); 6"R'z#{OF  
} >T-4!ZvS\j  
while(l SortUtil.swap(data,l,r); 9dWz3b1[]  
SortUtil.swap(data,l,j); `\f 3Ij,  
L$,yEMCe  
if((l-i)>THRESHOLD){ W||&Xb  
stack[++top]=i; Nnq1&j"m  
stack[++top]=l-1; iUk#hLLC  
} (%mV,2|:20  
if((j-l)>THRESHOLD){ Z58{YCY  
stack[++top]=l+1; Pb sxjP  
stack[++top]=j; D"%>  
} Fm*npK  
QNH3\<IS  
} z"Mk(d@-E  
file://new InsertSort().sort(data); [v\m)5  
insertSort(data); <~uzKs0  
} Q!_d6-*u  
/** SmIcqM  
* @param data 4]6-)RHFB  
*/ <>728;/C  
private void insertSort(int[] data) { 6&il>  
int temp; @_1cY#!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T"<)B^8f  
} 7Gy:T47T\@  
} 'u~0rMe4})  
} J_?v=dW`  
:Qh rh(i  
} 7*"Jx}eM  
5JHEBw5W%  
归并排序: MdmN7>  
!#=3>\np+X  
package org.rut.util.algorithm.support; P^tTg  
V1~@   
import org.rut.util.algorithm.SortUtil; DTSf[zP/  
<'N:K@Cs  
/** </u=<^ire  
* @author treeroot *QV"o{V  
* @since 2006-2-2 p4 =/rkq  
* @version 1.0 ,Vw>3|C  
*/ hS&l4 \I'Z  
public class MergeSort implements SortUtil.Sort{ ncMzHw  
&} { #g  
/* (non-Javadoc) @\o"zU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I2Imb9k~B  
*/ iaLZ|\`3a  
public void sort(int[] data) { RB|i<`Z  
int[] temp=new int[data.length]; 8g Z)c\  
mergeSort(data,temp,0,data.length-1); @5ud{"|2  
} 2`TV(U@  
1GqSY|FSGp  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ka_;~LS>(  
int mid=(l+r)/2; P=_fYA3  
if(l==r) return ; /KNDo^P  
mergeSort(data,temp,l,mid); ^\&FowpP  
mergeSort(data,temp,mid+1,r); gu+zfvkcY  
for(int i=l;i<=r;i++){ <fM}Kk  
temp=data; =^i K^)  
} mEsb_3?#+  
int i1=l; D:f=Z?L)>  
int i2=mid+1; Od)y4nr3~  
for(int cur=l;cur<=r;cur++){ X%3?sH  
if(i1==mid+1) H!&_Tv[  
data[cur]=temp[i2++]; Tjhy@3  
else if(i2>r) (zsv!U  
data[cur]=temp[i1++]; F"UI=7:o  
else if(temp[i1] data[cur]=temp[i1++]; 6dV )pJd  
else 40pz<-B  
data[cur]=temp[i2++]; D>-r `  
} -0x Q'1I  
} 8-Y*b89  
L!lmy&1  
} 28`s+sH  
3%5a&b  
改进后的归并排序: p@nj6N.--  
-5 D<zP/  
package org.rut.util.algorithm.support; %1.F;-GdsW  
YO$D-  
import org.rut.util.algorithm.SortUtil; %9a3$OGZX  
BdF/(Pg  
/** yCvtglAJ4  
* @author treeroot brs`R#e \  
* @since 2006-2-2 ninWnQq  
* @version 1.0 7HBf^N.  
*/ &i(Ip'r  
public class ImprovedMergeSort implements SortUtil.Sort { KE@+I.x  
]B?M3`'>  
private static final int THRESHOLD = 10; Hd\V?#H  
.<F46?HS  
/* `SsoRPW&$  
* (non-Javadoc) 7XK0vKmW3  
* 8hD[z}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cj<8r S4+  
*/ tP7<WGHd/  
public void sort(int[] data) { t15{>>f4>  
int[] temp=new int[data.length]; 4P k%+l  
mergeSort(data,temp,0,data.length-1); XFvl  
} t`+A;%=K]  
J\Pb/9M/  
private void mergeSort(int[] data, int[] temp, int l, int r) { <Q\KS  
int i, j, k; vxj:Y'}  
int mid = (l + r) / 2; h_[{-WC  
if (l == r) }!oEjcX'  
return; .i I{  
if ((mid - l) >= THRESHOLD) T+ZA"i+  
mergeSort(data, temp, l, mid); $3G^}A"  
else O573AA  
insertSort(data, l, mid - l + 1); KF_fz   
if ((r - mid) > THRESHOLD) n@RmH>"  
mergeSort(data, temp, mid + 1, r); 9hfg/3t('  
else suwR`2  
insertSort(data, mid + 1, r - mid); "!V`_ S;  
]s AuL!  
for (i = l; i <= mid; i++) { c 'wRGMP  
temp = data; G?'^"ae"Z  
} gVfFEF.  
for (j = 1; j <= r - mid; j++) { ,3Q~X$f  
temp[r - j + 1] = data[j + mid]; w;`Jj -  
} 6dR+qJa6i  
int a = temp[l]; >5Yn`Fc5  
int b = temp[r]; $t):r@L  
for (i = l, j = r, k = l; k <= r; k++) { Y~g{9 <!  
if (a < b) { B[GC@]HE  
data[k] = temp[i++]; p%>sc  
a = temp; =J IceLL  
} else { z7bJV/f  
data[k] = temp[j--]; `}l%61n0  
b = temp[j]; tr[}F7n9  
} '7sf)0\:<p  
} PJC(:R(j  
} < -`.u`  
,%*UF6B M  
/** BX0lk  
* @param data $h{m")]  
* @param l DOKe.k  
* @param i kg]6q T;Y  
*/ J 7R(X  
private void insertSort(int[] data, int start, int len) { J&>@ >47  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6+IhI?lI=  
} _w4G|j$C  
} DJ,LQj  
} w~b:9_reY  
} YQ G<Q  
<J&S[`U!  
堆排序: ,SR7DiYg  
dgkS5Q$/  
package org.rut.util.algorithm.support; k56Qas+3=  
B-rE8 \  
import org.rut.util.algorithm.SortUtil; b?i+nh qI  
CvY+b^;  
/** g %f5hy  
* @author treeroot *#XZ*Ga  
* @since 2006-2-2 ca_mift  
* @version 1.0 "CJ~BJI%  
*/ _Hv+2E[4Z  
public class HeapSort implements SortUtil.Sort{ PR.3EL  
wc;n= %  
/* (non-Javadoc) qg oB}n%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z3+@[I$  
*/ 7EE{*}?0E  
public void sort(int[] data) { kP ]Up&'  
MaxHeap h=new MaxHeap(); f$xXR$mjf  
h.init(data); mQ:{>`  
for(int i=0;i h.remove(); q,,  
System.arraycopy(h.queue,1,data,0,data.length); \0b}Z#'0  
} $9,&BW_*  
 LgNIb  
private static class MaxHeap{ &W@2n&U.q  
^z{szy?Fg  
void init(int[] data){ z$%twBg}#  
this.queue=new int[data.length+1]; eIkKsgr>  
for(int i=0;i queue[++size]=data; Food<(!.>  
fixUp(size); Y~I<Locv  
} D!rPF)K )  
} 7&ED>Bk  
}mj9$=B4  
private int size=0; AEyvljv  
]u|fLK.|  
private int[] queue; b5NVQ8Mq  
8F}drK9>F  
public int get() { 'I]XX==_  
return queue[1]; )!"fUz$  
} m\`>N_4*9  
e2O6q05 ?Q  
public void remove() { _? gCOr  
SortUtil.swap(queue,1,size--); j,k3]bP  
fixDown(1); h !^= c  
} 8q[; 0  
file://fixdown &zEQbHK6  
private void fixDown(int k) { w>%@Ug["  
int j; wh8';LZ>R  
while ((j = k << 1) <= size) { S[Du >  
if (j < size %26amp;%26amp; queue[j] j++; }D#: NlMp  
if (queue[k]>queue[j]) file://不用交换 DzAZv/h76  
break; ;V}:0{p  
SortUtil.swap(queue,j,k); CxF d/X,  
k = j; yH/A9L,Z  
} .e~"+Pe6b  
} }UhYwJf89  
private void fixUp(int k) { $v0,)ALi  
while (k > 1) { 3 _  
int j = k >> 1; S+T/(-W  
if (queue[j]>queue[k]) h aAY=:  
break; ')"+ a^c  
SortUtil.swap(queue,j,k); CvoFt=c$jE  
k = j; &W2*'$j"_  
} 3z8i0  
} U) J5K  
'$9o(m#  
} YWFE*wQ!  
^jL '*&l  
} R BYhU55B  
|6E_N5~  
SortUtil: o`bc/3!  
2d&F<J<sU  
package org.rut.util.algorithm; ;k<dp7^  
80=0S^gEZ  
import org.rut.util.algorithm.support.BubbleSort; j6m;03<|  
import org.rut.util.algorithm.support.HeapSort; K zWo}tT  
import org.rut.util.algorithm.support.ImprovedMergeSort; 'R 7 \  
import org.rut.util.algorithm.support.ImprovedQuickSort; V@ >(xe7  
import org.rut.util.algorithm.support.InsertSort; n#(pT3&  
import org.rut.util.algorithm.support.MergeSort; V(7,N(  
import org.rut.util.algorithm.support.QuickSort; z#*.9/y\^R  
import org.rut.util.algorithm.support.SelectionSort; .xRdKt!p  
import org.rut.util.algorithm.support.ShellSort; y\?ey'o  
f"ezmZI  
/** 3Ua?^2l  
* @author treeroot U$OZkHA[  
* @since 2006-2-2 t3;Zx+Br  
* @version 1.0 2Rk}ovtD[  
*/ s2<!Zb4  
public class SortUtil { Zy}tZRG  
public final static int INSERT = 1; Un6R)MVT  
public final static int BUBBLE = 2; 2JfSi2T  
public final static int SELECTION = 3; M>AxVL  
public final static int SHELL = 4; 7L!JP:v   
public final static int QUICK = 5; 9d5$cV  
public final static int IMPROVED_QUICK = 6; Tc WCr  
public final static int MERGE = 7; QNNURf\[(  
public final static int IMPROVED_MERGE = 8; Lljn\5!r<  
public final static int HEAP = 9; B~]Kqp7yU  
n!jmxl$  
public static void sort(int[] data) { j ZXa R  
sort(data, IMPROVED_QUICK); aO'#!k*R  
} )^j_O^T5  
private static String[] name={ um2a#6uo  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" p+d-7'?I  
}; x?h/e;  
9K+> ;`  
private static Sort[] impl=new Sort[]{ 2\xw2VQ@P  
new InsertSort(), ~7]V^tG  
new BubbleSort(), *8}b&4O~  
new SelectionSort(), t-\+t<;  
new ShellSort(), Q0U~s\<  
new QuickSort(), wI%M3XaBws  
new ImprovedQuickSort(), Itl8#LpLM  
new MergeSort(), l1+l@r\  
new ImprovedMergeSort(), |2(q9j  
new HeapSort() ;ArwEzo(  
}; CFtQPTw  
}%wd1`l7  
public static String toString(int algorithm){ 3lP;=* m.  
return name[algorithm-1]; 'a~@q~!  
} ~ ld.I4  
A}9Z%U  
public static void sort(int[] data, int algorithm) { .t8)`MU6.  
impl[algorithm-1].sort(data); >xFvfuyC  
} 1NZ"\9=U  
F y+NJSG  
public static interface Sort { z0 "DbZ;d  
public void sort(int[] data); _7Y h[I4  
} &W<7!U:2m  
#ArrQeO 5_  
public static void swap(int[] data, int i, int j) { 6h:QSVfx  
int temp = data; n Bu!2c  
data = data[j]; ,Z`}!%?  
data[j] = temp; H/,KY/>i  
} eaw!5]huu  
} ^m\o(R  
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