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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。 Z#_VxA>]v  
插入排序: KSl@V>!_  
-hO[^^i9  
package org.rut.util.algorithm.support; p@=B\A]  
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import org.rut.util.algorithm.SortUtil; j2!^iGS}  
/** c6F8z75U  
* @author treeroot p~t5PU*(  
* @since 2006-2-2 hjoxx F\_  
* @version 1.0 bdyE9t   
*/ 5sF?0P;ln  
public class InsertSort implements SortUtil.Sort{ *| YR8f  
0o&c8?@j  
/* (non-Javadoc) X$$b:q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vM /D7YS:  
*/ x;>~;vmi  
public void sort(int[] data) { \kksZ4,  
int temp; gl"1;C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #-FfyxQ8ai  
} x5nw/''[2  
} c9xc@G!  
} gPM<LO`;i  
5Og=`T  
} MF~Tr0tOC  
j[YO1q*  
冒泡排序: f{u3RCfX~2  
C XiSin  
package org.rut.util.algorithm.support; D4CiB"g3*  
E6y ?DXW H  
import org.rut.util.algorithm.SortUtil; b!-F!Lq/+0  
p7Q %)5o  
/** .R>4'#8q  
* @author treeroot q6 Rr?  
* @since 2006-2-2 TYh_uox6  
* @version 1.0 \A9hYTC)  
*/ B<uUf)t  
public class BubbleSort implements SortUtil.Sort{ ax+P) yz  
WscNjWQ^TD  
/* (non-Javadoc) LTc= D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T*sB Wn'am  
*/ C'jE'B5b  
public void sort(int[] data) { ")ZsY9-P  
int temp; /6@Wm? `DB  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cu V}<3&  
if(data[j] SortUtil.swap(data,j,j-1); 8'X:}O/  
} ^(8(z@y  
} ^l"  
} B^u qu  
} $f^ \fa[  
}28,fb /  
} F( Iq8DV  
d;10[8:5=  
选择排序: l^ aUN  
OCVF+D :  
package org.rut.util.algorithm.support; Pq:GvM`  
zS##YR  
import org.rut.util.algorithm.SortUtil; Z#lZn!EbK  
e+5]l>3)f  
/** =5sUpP V(  
* @author treeroot ' cx&:s  
* @since 2006-2-2 gM<*(=x'  
* @version 1.0 pK~K>8\  
*/ g^EkRBU  
public class SelectionSort implements SortUtil.Sort { ` E2@GX+,  
H,!3s<1  
/* y-iuOzq4  
* (non-Javadoc) S%7^7MSqA  
* C r~!N|(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'h&"xXv4|  
*/ ,^UNQO*{GI  
public void sort(int[] data) { k*8 ld-O  
int temp; M)oy3y^&  
for (int i = 0; i < data.length; i++) { L[Dr[  
int lowIndex = i; i$A0_ZJKjZ  
for (int j = data.length - 1; j > i; j--) { aBO%qmtt  
if (data[j] < data[lowIndex]) { G3&l|@5  
lowIndex = j; p v2u.qg5z  
} B>CG/]  
} PfI~`ke  
SortUtil.swap(data,i,lowIndex); :u7y k@  
} d|9B3I*I  
} b'N(eka  
9(>l trA  
} Z~VSWrw3  
9*+%Qt,{B  
Shell排序: *k(>Qsb "  
K 0i[D"  
package org.rut.util.algorithm.support; E r6'Ig|U  
xi]qdiA  
import org.rut.util.algorithm.SortUtil; SV4a_m?  
(\ze T5  
/** ",\,lqV  
* @author treeroot J0e~s  
* @since 2006-2-2 eJB !|  
* @version 1.0 YJlpP0;++  
*/ l0m\2Ttf  
public class ShellSort implements SortUtil.Sort{ /\S1p3EW*  
'= _}&  
/* (non-Javadoc) {o?+T );Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tkFGGc}w\  
*/ 0{/P1  
public void sort(int[] data) { e>Vr#a4  
for(int i=data.length/2;i>2;i/=2){ m8q3Pp  
for(int j=0;j insertSort(data,j,i); S?W!bkfn  
} *;~*S4/P   
} LeA=*+zP[  
insertSort(data,0,1); D2`tWRm0  
} F j_r n  
p:9)}y  
/** K +oFu%  
* @param data u; xl}  
* @param j / -ebx~FX&  
* @param i ^rI<}cfR  
*/ +X4O.6Mn  
private void insertSort(int[] data, int start, int inc) { :&#HrD[KT  
int temp; AHq;6cG  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); gHLBtl/  
} }U=|{@%  
} N`tBDl"ld  
} 5 } 9}4e  
x(/KHpSWK  
} "#H@d+u  
[TAW68f'  
快速排序: x~Eg ax  
qW57h8M  
package org.rut.util.algorithm.support; b_&;i4[  
ffuV158a&  
import org.rut.util.algorithm.SortUtil; -_bHLoI  
SMr ]Gf.  
/** H+:SL $+<o  
* @author treeroot fUh7PF%  
* @since 2006-2-2 |sN>/89=/  
* @version 1.0 x.rOP_rs  
*/ 8Z TN  
public class QuickSort implements SortUtil.Sort{ SbNs#  
V6.xp{[  
/* (non-Javadoc) PiD%PBmUl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'iM;e K  
*/ |s&jWM$  
public void sort(int[] data) { 3PB#m.N<  
quickSort(data,0,data.length-1); 3/P# 2&jt  
} '-s Ai  
private void quickSort(int[] data,int i,int j){ j rX .e  
int pivotIndex=(i+j)/2; re9*q   
file://swap s)#8>s-  
SortUtil.swap(data,pivotIndex,j); Ys@M1o  
B+G,v:)R6z  
int k=partition(data,i-1,j,data[j]); gA)!1V+:  
SortUtil.swap(data,k,j); S^,1N 4  
if((k-i)>1) quickSort(data,i,k-1); 9$&+0  
if((j-k)>1) quickSort(data,k+1,j); xtef18i>  
p`// *gl  
} TqbDj|7`R  
/** Mp=2}d%P  
* @param data }]1=?:tX%  
* @param i  8+no>%L  
* @param j :3k&[W*  
* @return c+l1#[Dnc  
*/ ITj0u&H:  
private int partition(int[] data, int l, int r,int pivot) { 6iwIEb  
do{ G1 ?."  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t.sbfLu  
SortUtil.swap(data,l,r); i{8T 8  
} s; 'XX}Y  
while(l SortUtil.swap(data,l,r); T+z]ztO  
return l; Yqs N#E3pf  
} c}iVBN6~.<  
5Xn+cw*  
} W2L:  
R:zPU   
改进后的快速排序: %G6ml,  
i6R2R8  
package org.rut.util.algorithm.support; %T]NM3|U  
a []Iz8*6e  
import org.rut.util.algorithm.SortUtil; Lpw9hj|  
H"|xG;cf  
/** YQ}xr^VA  
* @author treeroot tlw$/tMa  
* @since 2006-2-2 z;:c_y!f  
* @version 1.0 xaO9?{O  
*/ 70p1&Y7or  
public class ImprovedQuickSort implements SortUtil.Sort { k=,,s(]tx  
lWS @<j  
private static int MAX_STACK_SIZE=4096; 1:<=zqh0  
private static int THRESHOLD=10; /\L|F?+@  
/* (non-Javadoc) V5y8VT=I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iOpMU  
*/ W:q79u yX  
public void sort(int[] data) { ~F8M_  
int[] stack=new int[MAX_STACK_SIZE]; av>c  
/0Q=}:d  
int top=-1; mA|&K8H  
int pivot; %4#,y(dO  
int pivotIndex,l,r; {UpHHH:X#  
Xz)UH<  
stack[++top]=0; '< ]:su+  
stack[++top]=data.length-1; |FZ)5  
#:0dq D=  
while(top>0){ }} cz95  
int j=stack[top--]; fUQuEh5_  
int i=stack[top--]; dkTj KV  
yX%T-/XJ  
pivotIndex=(i+j)/2; c"BFkw  
pivot=data[pivotIndex]; 12 HBq8o  
CW*Kd t  
SortUtil.swap(data,pivotIndex,j); hS]g^S==2h  
Le3H!9lbc  
file://partition HRkO.230  
l=i-1; Rd6? ,  
r=j; DSGtt/n  
do{ 2N_8ahc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O]{3aMs!Y  
SortUtil.swap(data,l,r); S,Q!Xb@  
} C"bG?Mb  
while(l SortUtil.swap(data,l,r); V@gweci  
SortUtil.swap(data,l,j); oTOr,Mn0\6  
5wM*(H^c[  
if((l-i)>THRESHOLD){ ySP1,xq  
stack[++top]=i; Wyu$J  
stack[++top]=l-1; 5/j7C>  
} D=}UKd  
if((j-l)>THRESHOLD){ 6<sd6SM  
stack[++top]=l+1; VW^6qf/,  
stack[++top]=j; Cz=HxU80J  
} _t<&#D~  
qzk/P1{-  
} +`pS 7d  
file://new InsertSort().sort(data); E (DNK  
insertSort(data); &u5OL?>  
} ^Rr0)4ns  
/** _ndc^OG  
* @param data qfp,5@p  
*/ yOKpi&! r  
private void insertSort(int[] data) { `"CIy_m  
int temp; (_S`9Z8=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g ycjIy@t  
} d-e6hI4b  
} MfNxd 6w  
} (XtN3FTY  
P:GAJ->;]>  
} +X[+SF)!  
2xBIfmR^y  
归并排序: nY(>|!  
E6"+\-e  
package org.rut.util.algorithm.support; l*^J}oY  
3IXai)6U  
import org.rut.util.algorithm.SortUtil; D^cv 8 8<  
USgZ%xk2  
/** [ kI|Thx  
* @author treeroot RTN?[`  
* @since 2006-2-2 e>yPFXSk  
* @version 1.0 v&t~0jX,  
*/ N ]KS\  
public class MergeSort implements SortUtil.Sort{ *|)a@V L  
B|%(0j8  
/* (non-Javadoc) %UIR GI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jg3OM Ut  
*/ p,_,o3@~  
public void sort(int[] data) { !|!k9~v!  
int[] temp=new int[data.length]; >< <(6  
mergeSort(data,temp,0,data.length-1); ,;3#}OGg  
} a?Q\nu1  
0#\K9|.  
private void mergeSort(int[] data,int[] temp,int l,int r){ wOW#A}m'vj  
int mid=(l+r)/2; 3khsGD@  
if(l==r) return ; KGsS2  
mergeSort(data,temp,l,mid); 50,`=Z  
mergeSort(data,temp,mid+1,r); 9a\H+Y~  
for(int i=l;i<=r;i++){ XO[S(q  
temp=data; F@m]Imn5Dx  
} <sU?q<MC  
int i1=l; Q-A:0F&{t  
int i2=mid+1; xJCMxt2Y  
for(int cur=l;cur<=r;cur++){ xBba&A]=  
if(i1==mid+1) L`sg60z  
data[cur]=temp[i2++]; gcS ?r :  
else if(i2>r) ?D 8<}~Do  
data[cur]=temp[i1++]; JmMB=} <  
else if(temp[i1] data[cur]=temp[i1++]; b02V#m;Z  
else 'G] P09`*)  
data[cur]=temp[i2++]; jb0wP01R  
} s &4k  
} #vwK6'z  
TcW-pY<N  
} 0L->e(Vf7u  
;Fo%R$y  
改进后的归并排序: UA>3,|gV1  
n6AN  
package org.rut.util.algorithm.support; r"E%U:y3P  
|nOqy&B  
import org.rut.util.algorithm.SortUtil; /l.:GH36f  
E6 g]EE  
/** y!z2+q2  
* @author treeroot Q#kSp8  
* @since 2006-2-2 PjwDth A1  
* @version 1.0 v,T :V#f^  
*/ ,W8E U  
public class ImprovedMergeSort implements SortUtil.Sort { RIC\f_Dv  
o7gYj\  
private static final int THRESHOLD = 10; $,Eb(j  
3(2WO^zX {  
/* n>t&l8g%g  
* (non-Javadoc)  3o_)x  
* @euH[<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V/.Na(C~  
*/ _sp, ,gz  
public void sort(int[] data) { LDDg g u   
int[] temp=new int[data.length]; $Cgl$A  
mergeSort(data,temp,0,data.length-1); X| !VjUH  
} I45 kPfu  
h+gaKh=k+  
private void mergeSort(int[] data, int[] temp, int l, int r) { RGu`Jk  
int i, j, k; %IA1Y>`  
int mid = (l + r) / 2; #!0=I s^  
if (l == r) [ Xa,|  
return; )])nd "E  
if ((mid - l) >= THRESHOLD) 1;*4y J2  
mergeSort(data, temp, l, mid); uI9eUO  
else V jdu9Ez  
insertSort(data, l, mid - l + 1); Gye84C2E=  
if ((r - mid) > THRESHOLD) (HEi;  
mergeSort(data, temp, mid + 1, r); ]Cc3}+(s  
else m&P B5s\=  
insertSort(data, mid + 1, r - mid); 'iM#iA8  
r*q  
for (i = l; i <= mid; i++) { OXxgnn>W'  
temp = data; b I-uF8"  
} A`B>fI  
for (j = 1; j <= r - mid; j++) { "[QQ(]={  
temp[r - j + 1] = data[j + mid]; ~hZr1hT6L  
} 70GwTK.{~  
int a = temp[l]; %jE0Z4\  
int b = temp[r]; a1>Tz  
for (i = l, j = r, k = l; k <= r; k++) { ~GLWhe-  
if (a < b) { cMfJq}C<  
data[k] = temp[i++]; } =p e;l  
a = temp; 9xN`  
} else { Zt"#'1  
data[k] = temp[j--]; {X\%7Zef+  
b = temp[j]; *@VS^JB  
} ynZp|'b?<  
} U!GfDt  
} ]Sey|/@D  
<Fi*wV  
/** | |u  
* @param data }Ug O$1  
* @param l oO3X>y{gN  
* @param i p)qM{`]G\  
*/ c(kYCVc   
private void insertSort(int[] data, int start, int len) { Ez/>3:;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _ea|E  8  
} xrZzfg  
} {UFs1  
} =o )B1(v@.  
} !DM GAt\  
Kr'Yz!  
堆排序: +gyGA/5:d$  
z41v5rB4  
package org.rut.util.algorithm.support; 2M>`W5  
0<XxR6w  
import org.rut.util.algorithm.SortUtil; <^w4+5sT/  
S-[S?&c`  
/** ]i/Bq!d l  
* @author treeroot zEKVyZd*{  
* @since 2006-2-2 |\U5m6q  
* @version 1.0 )zydD=,bu  
*/ #Ibpf ,  
public class HeapSort implements SortUtil.Sort{ 7.*Mmx~]=  
=`k', V_  
/* (non-Javadoc) {pXqw'"1.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (@Kc(>(: Y  
*/ <2e[;$  
public void sort(int[] data) { [;Jq=G8&t  
MaxHeap h=new MaxHeap(); Ie[DTy  
h.init(data); %l3f .  
for(int i=0;i h.remove(); YCq:]  
System.arraycopy(h.queue,1,data,0,data.length); n#5S-z1KNw  
} xnDst9%  
R:`)*=rL%  
private static class MaxHeap{ I uC7Hx`z  
GvBmh.  
void init(int[] data){ y q!{\@-  
this.queue=new int[data.length+1]; + } y"S-  
for(int i=0;i queue[++size]=data; **.g^Pyc  
fixUp(size); X4JSI%E  
} i!*8@:VI  
} C;%1XFzM  
X2E=2tXl`7  
private int size=0; #fDM{f0]R  
5 FE&  
private int[] queue; _`. Q7  
WFTwFm6  
public int get() { tC5>K9Ed  
return queue[1]; l(HxZlHr  
} Y[s}?Xu]w#  
HLCI  
public void remove() { Ab8Ke|fA  
SortUtil.swap(queue,1,size--); 1/v#Z#3[  
fixDown(1); (3Z;c_N  
} 3:>hHQi  
file://fixdown #S(b2LEc  
private void fixDown(int k) { >IipWTVo<  
int j; *6G@8TIh  
while ((j = k << 1) <= size) { %Iiu#- 'B  
if (j < size %26amp;%26amp; queue[j] j++; "-Pz2QJY  
if (queue[k]>queue[j]) file://不用交换 /i{V21(%  
break; wlEK"kKU  
SortUtil.swap(queue,j,k); \zeuvD  
k = j; $WO{!R  
} MS]Q\g}U  
} rN,T}M= 2  
private void fixUp(int k) { /I:&P Pff  
while (k > 1) { VI-6t"l  
int j = k >> 1; nG-DtG^z  
if (queue[j]>queue[k]) <O.|pJus  
break; ?XV3Y3  
SortUtil.swap(queue,j,k); ornU8H`  
k = j; TkVqv v  
} i7e_~K  
} j_h0 hm]  
r^ {Bw1+  
} h@TP=  
i.^:xZ  
} y&V'GhW!dd  
!Sl_qL  
SortUtil: i1K$~  
!3{;oU%*  
package org.rut.util.algorithm; av_ +M;G  
F:~@e(  
import org.rut.util.algorithm.support.BubbleSort; DG}s`'  
import org.rut.util.algorithm.support.HeapSort; LQR^lD+_=  
import org.rut.util.algorithm.support.ImprovedMergeSort; z6P~HF+&h  
import org.rut.util.algorithm.support.ImprovedQuickSort; Ro;I%j  
import org.rut.util.algorithm.support.InsertSort; n(i/jW~0w  
import org.rut.util.algorithm.support.MergeSort; \Yn0|j>  
import org.rut.util.algorithm.support.QuickSort; 06?d#{?M1o  
import org.rut.util.algorithm.support.SelectionSort; hZw8*H^tP  
import org.rut.util.algorithm.support.ShellSort; 1vS-m x  
%j2$ ezud  
/** XM#nb$gl  
* @author treeroot 8A}<-?>  
* @since 2006-2-2 2%*\XPt)  
* @version 1.0 yF1p^>*ak&  
*/ Zy.3yQM9i  
public class SortUtil { !,C8  
public final static int INSERT = 1; ?6HnN0A)  
public final static int BUBBLE = 2; [7NO !^  
public final static int SELECTION = 3; O<ybiPR  
public final static int SHELL = 4; T^{=cx9x9  
public final static int QUICK = 5; 2H`>Kj  
public final static int IMPROVED_QUICK = 6; Ktu~%)k%  
public final static int MERGE = 7; Xq<_r^  
public final static int IMPROVED_MERGE = 8; +~=j3U  
public final static int HEAP = 9; bcT'!:  
3`)ej`  
public static void sort(int[] data) { drvrj~o:  
sort(data, IMPROVED_QUICK); 'ka$@,s:  
} wEN[o18{  
private static String[] name={ suYbD!`(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" sk*vmxClY  
}; A~^x*#q{4  
^ 8YBW<9  
private static Sort[] impl=new Sort[]{ Vol}wc  
new InsertSort(), k3KT':*  
new BubbleSort(), i g .  
new SelectionSort(), < +k dL  
new ShellSort(),  z:   
new QuickSort(), -%Rbd0gVH\  
new ImprovedQuickSort(), 9p1@Lfbj  
new MergeSort(), +n$ruoRJh  
new ImprovedMergeSort(), TQPrOs?  
new HeapSort() ]h=5d09z  
}; t*dq*(3"c  
URt+MTU[  
public static String toString(int algorithm){ Z3=N= xY]  
return name[algorithm-1]; `C$QR 8  
} w9mAeGyE  
7 toIbC#  
public static void sort(int[] data, int algorithm) { Xbrc_ V\_  
impl[algorithm-1].sort(data); NqveL<r`  
} #k[Y(_  
k+J63+obd  
public static interface Sort { IYHNN  
public void sort(int[] data); l?YO!$  
} rq Uk_|Xa  
l;&kX6 w  
public static void swap(int[] data, int i, int j) { mNEh\4ai  
int temp = data; B =7maYeU  
data = data[j]; NFC/4  
data[j] = temp; $o9@ ?2  
} HL dHyK/S  
} T LF'7ufq  
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