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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。 {Vf].l:kn  
插入排序: 8>(/:u_x  
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package org.rut.util.algorithm.support; \Lm`jU(:l  
7M$cIWe$  
import org.rut.util.algorithm.SortUtil; M?I^`6IOc8  
/** {ApjOIxk  
* @author treeroot H2CpZK'  
* @since 2006-2-2 MkM`)g 5  
* @version 1.0 C%"aj^u  
*/ 3/8<dc  
public class InsertSort implements SortUtil.Sort{ 2QKt.a  
:%IB34e  
/* (non-Javadoc) ^-(DokdBn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8#RL2)7Uy`  
*/  x(A6RRh  
public void sort(int[] data) { %4Yq (e  
int temp; ,m5tO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M/YS%1  
} Uq.hCb`:  
} B9]bv]  
} ]i8t  
.v['INK9  
} )%HIC@MM6  
RT[ E$H  
冒泡排序: "MyMByomQ  
;+lsNf  
package org.rut.util.algorithm.support; VBK|*Tl  
yER  
import org.rut.util.algorithm.SortUtil; Sea6xGdq  
Nu+DVIM  
/** z]!w@:  
* @author treeroot rf]x5%ij  
* @since 2006-2-2 rg I Z  
* @version 1.0 0+KSD{  
*/ 2Vx x  
public class BubbleSort implements SortUtil.Sort{ c;88Wb<|W  
)<.y{_QUN  
/* (non-Javadoc) '-P+|bZW4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,Eo\(j2F.  
*/ (SByN7[g b  
public void sort(int[] data) { J#\oc@  
int temp; n39EKH rm%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _U Y5  
if(data[j] SortUtil.swap(data,j,j-1); cuL/y$+EY  
} uz;eY D  
} l6.&<0pLT  
} @GF3g=  
} a?*pO`<J{  
*C.Kdf3w  
} >C`#4e?}  
Fm+V_.H/;  
选择排序: jwheJ G  
#j"GS/y"  
package org.rut.util.algorithm.support; 5i%\m  
m1M6N`f  
import org.rut.util.algorithm.SortUtil; 6+:;M b_S  
593!;2/@  
/** z<8VJZd  
* @author treeroot Ei89Ngp\}  
* @since 2006-2-2 X=Jt4 h 9  
* @version 1.0 D0h6j0r 5  
*/ @QF;m  
public class SelectionSort implements SortUtil.Sort { Q|G|5X  
`)TgGny01  
/* #{J+BWP\o  
* (non-Javadoc) C2 yJ Xi`$  
* ^,` L!3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c-4z8T#M^  
*/ q&^H" fF  
public void sort(int[] data) { Wl]XOUZ  
int temp; kR{$&cE^  
for (int i = 0; i < data.length; i++) { CW+gZ!  
int lowIndex = i; NosOd*S  
for (int j = data.length - 1; j > i; j--) { )#sN#ZR$  
if (data[j] < data[lowIndex]) { j3j^cO[8v  
lowIndex = j; m",G;VN  
} N[N4!k )!$  
} .p(r|5(b  
SortUtil.swap(data,i,lowIndex); WZ UeW*#=  
} LVdtI  
} QRwOv  
im F,8'  
} 6rlvSdB  
{a(<E8-^  
Shell排序: bb$1zSA  
'h[7AZ&)#  
package org.rut.util.algorithm.support; Mo4c8wp&SM  
@2TfW]6  
import org.rut.util.algorithm.SortUtil; ;s#]."v_=  
(N5"'`NZA  
/** V6'k\5|_  
* @author treeroot ^1Bk*?Yx\x  
* @since 2006-2-2 y(=0  
* @version 1.0 ,C|aiSh0-  
*/ )))AxgM  
public class ShellSort implements SortUtil.Sort{ ?',Wn3A  
X7?j90tH  
/* (non-Javadoc) ed#>q;jX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }6*JX\'q  
*/ m/`L3@7Tt  
public void sort(int[] data) { >]2^5C;  
for(int i=data.length/2;i>2;i/=2){ [~?6jnp  
for(int j=0;j insertSort(data,j,i); bG+Gg*0p  
} -?Cu-'  
} (@S 9>z4s  
insertSort(data,0,1); kRH D{6mol  
} bnV)f<  
'Y]<1M>.g  
/** ?i}wm`  
* @param data ACF_;4%&  
* @param j -o57"r^x  
* @param i wd1>L) T  
*/ V=c?V/pl  
private void insertSort(int[] data, int start, int inc) { 0UQ DB5u  
int temp; ^tVIPH.R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <)oxs ]<  
} sR| /s3;  
} Gi&/`vm  
} ;}k_  
B0^:nYko  
} UN:cRH{?*  
},#AlShZu  
快速排序: Az/P;C=  
f?"909&  
package org.rut.util.algorithm.support; Zm#,Ike?#  
x_= 3 !)  
import org.rut.util.algorithm.SortUtil; .L ^F4  
B'6(Ao=3/  
/** '(8} <(%  
* @author treeroot CC]q\%y-_  
* @since 2006-2-2 1119YeL  
* @version 1.0 #vTF:r  
*/ .GFKy  
public class QuickSort implements SortUtil.Sort{ aI\]R:f,  
G ahY+$L,  
/* (non-Javadoc) (dym*_J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~:-V<r,pe  
*/ axv-U dE;  
public void sort(int[] data) { S4{\5ulr7  
quickSort(data,0,data.length-1); \G6V-W  
} +Xmza8T9  
private void quickSort(int[] data,int i,int j){ >9[wjB2?}  
int pivotIndex=(i+j)/2; M ED_#OS  
file://swap a(x#6  
SortUtil.swap(data,pivotIndex,j); T=fVD8  
Bhe0z|&  
int k=partition(data,i-1,j,data[j]); R I]x=  
SortUtil.swap(data,k,j); RR>G}u9 np  
if((k-i)>1) quickSort(data,i,k-1); h5[.G!  
if((j-k)>1) quickSort(data,k+1,j); ^_o:Ddz?l"  
= Ru q  
} !1P<A1K  
/** pFEU^]V3*  
* @param data u)l[*";S  
* @param i kqLpt  
* @param j X{qa|6S,F  
* @return P2 +^7x?  
*/ 7gt%[r M  
private int partition(int[] data, int l, int r,int pivot) { !XY}\zKq  
do{ AUR{O  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  j g_;pn  
SortUtil.swap(data,l,r); ,m)YL>k  
} |l,0bkY@&  
while(l SortUtil.swap(data,l,r); T2 V(P>E  
return l; |LE*R@|3$  
} ?gS~9jgcd  
%UCuI9  
} 8uB6C0,6?  
3L;&MG=  
改进后的快速排序: *)i+c{~  
bd`}2vr  
package org.rut.util.algorithm.support; 5Veybchy "  
xQ8?"K;iX  
import org.rut.util.algorithm.SortUtil; -)E6{  
mQ:5(]v  
/** )H<F([Jri  
* @author treeroot d~O)mJ J  
* @since 2006-2-2 ;5=5HYx%  
* @version 1.0 9jrlB0  
*/  Qs\!Kk@  
public class ImprovedQuickSort implements SortUtil.Sort { S d]`)  
@ {8x L  
private static int MAX_STACK_SIZE=4096; q]z%<`.9*  
private static int THRESHOLD=10; uJ%XF*>_D  
/* (non-Javadoc) >^d+;~Q;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {i:Ayhq~&  
*/ !T26#>mV  
public void sort(int[] data) { t0o'_>*?A  
int[] stack=new int[MAX_STACK_SIZE]; `xu/|})KI  
RQd5Q.  
int top=-1; OeY+Yt0  
int pivot; m-}6DN  
int pivotIndex,l,r; Z$ Mc{  
yI}_ U  
stack[++top]=0; aZYs?b>Gm  
stack[++top]=data.length-1; 5\P3JoH:Yg  
C-L["O0[  
while(top>0){ ~b SjZ1`  
int j=stack[top--]; Ed&M  
int i=stack[top--]; 4Awl  
e(sV4Z~  
pivotIndex=(i+j)/2; xouy|Nn'  
pivot=data[pivotIndex]; _;`g*Kx  
@1G`d53N  
SortUtil.swap(data,pivotIndex,j); uOnyU+fZV  
>&2n\HR\  
file://partition =;@?bTmqD  
l=i-1; \j3XT}  
r=j; pbb6?R,  
do{ XKT2u!Lx  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]h0K*{  
SortUtil.swap(data,l,r); p}R3A J  
} 6?(vXPpT$  
while(l SortUtil.swap(data,l,r); dzwto;  
SortUtil.swap(data,l,j); zWEt< `1M  
c<j  +"  
if((l-i)>THRESHOLD){ [P?.( *  
stack[++top]=i; k->cqtG  
stack[++top]=l-1; A/{0J\pA  
} .|9o`mF7  
if((j-l)>THRESHOLD){ */yR _f  
stack[++top]=l+1; $f]dL};  
stack[++top]=j; ~g[<A?0=y  
} U:o(%dk  
V57tn6 >b  
} rq>Om MQ67  
file://new InsertSort().sort(data); wth*H$iF  
insertSort(data); > : ;*3  
} b];? tP  
/** V}UYr Va#9  
* @param data L 2:N@TP  
*/ 3m9ab"  
private void insertSort(int[] data) { c_YP#U  
int temp; SYsbe 5j  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IrZ!.5%tV  
} p&~= rp`E  
} Y"&1jud4xl  
} 5*W<6ia  
4q7hL  
} HQO z  
wkwsBi  
归并排序: ^7 oXJu=  
@ s2<y@  
package org.rut.util.algorithm.support; 6#rj3^]  
D7"RZF\)  
import org.rut.util.algorithm.SortUtil; %[9d1F 3  
L)Iv] u  
/** Y$SwQ;wl  
* @author treeroot :UgCP ~Y  
* @since 2006-2-2 2l9RU}  
* @version 1.0 Z7t-{s64  
*/ 0=^A{V!m  
public class MergeSort implements SortUtil.Sort{ M >BcYbXf  
}JKK"d}U  
/* (non-Javadoc) BCK0fk~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T+y3Ph--^  
*/ 5@xl/  
public void sort(int[] data) { ;%H/^b.c  
int[] temp=new int[data.length]; @a{1vT9b  
mergeSort(data,temp,0,data.length-1); N$i|[>`j  
} `>mT/Rmb@  
v3vQfcxR  
private void mergeSort(int[] data,int[] temp,int l,int r){ hD5G\TR.  
int mid=(l+r)/2; mSu1/?PS  
if(l==r) return ; *&VqAc%qD  
mergeSort(data,temp,l,mid); iEJY[P1  
mergeSort(data,temp,mid+1,r); (3>Z NTm  
for(int i=l;i<=r;i++){ f(o1J|U{  
temp=data; J|z>5Z  
} },G>+ s8h  
int i1=l; qd7 86~  
int i2=mid+1; $Jt+>.44  
for(int cur=l;cur<=r;cur++){ j5yxdjx9  
if(i1==mid+1) 9(PQ7}  
data[cur]=temp[i2++]; #6%9*Rh  
else if(i2>r) ^l(Kj3gM  
data[cur]=temp[i1++]; `T]1u4^E  
else if(temp[i1] data[cur]=temp[i1++]; rz @;Zn  
else dfmxz7V  
data[cur]=temp[i2++]; -8]M ,,?  
} `f9I#B  
} UF)4K3X  
#l!Sz247  
} KF#,Q  
3'H 1T  
改进后的归并排序: y~cDWD <h  
*Q@%< R  
package org.rut.util.algorithm.support; ^mu?V-4  
>lRa},5(  
import org.rut.util.algorithm.SortUtil; _k,/t10  
Z,~EH  
/** ,`3kDqS_4  
* @author treeroot ;be2sTo  
* @since 2006-2-2 <opBOZ d  
* @version 1.0 `6.rTs $<  
*/ Wy2 pa #Q  
public class ImprovedMergeSort implements SortUtil.Sort { S]7RGzFe  
x[,HK{U|t  
private static final int THRESHOLD = 10; ];.H]TIc6  
Xy>+r[$D:  
/* '7!b#if  
* (non-Javadoc) D-[` wCa,  
* O<1qU M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V _&>0P{q  
*/ @GB~rfB[  
public void sort(int[] data) { XCGJ~  
int[] temp=new int[data.length]; [a&|c%h  
mergeSort(data,temp,0,data.length-1); jo.Sg:7&  
}  !XvQm*1  
.5',w"R  
private void mergeSort(int[] data, int[] temp, int l, int r) { GJLlMi  
int i, j, k; _IA@X. )?  
int mid = (l + r) / 2; XL/?v" /  
if (l == r) `(r [BV|h}  
return; gsqpQq7  
if ((mid - l) >= THRESHOLD) yJ(p-3O5  
mergeSort(data, temp, l, mid); M mjeFv  
else RE72%w(oM  
insertSort(data, l, mid - l + 1); 26c,hPIeXY  
if ((r - mid) > THRESHOLD) V0,%g+.^  
mergeSort(data, temp, mid + 1, r); , 8NY<sFh  
else Q.q'pJ-  
insertSort(data, mid + 1, r - mid); ccUq!1  
q&h&GZ  
for (i = l; i <= mid; i++) { oCBZ9PGkK  
temp = data; }=':)?'-.  
} ,<[Q/:}[  
for (j = 1; j <= r - mid; j++) { !18M!8Xea  
temp[r - j + 1] = data[j + mid]; Sc!{ o!9\  
} qjsS2,wM  
int a = temp[l]; [dK5kO  
int b = temp[r]; GgoPwl#{  
for (i = l, j = r, k = l; k <= r; k++) { a)+;<GZ~  
if (a < b) { H0zKL]D'>  
data[k] = temp[i++]; Fu*~{n  
a = temp; ?F@0"qi  
} else { hcvWf\4'#q  
data[k] = temp[j--]; >i>%@  
b = temp[j]; rpk )i:k\  
} U{2[n F  
} ~ >af"<  
} _]~gp.  
NArql  
/** %"2 ;i@  
* @param data i)Hjmf3  
* @param l $nB4Ie!WcR  
* @param i y{.s 4NT  
*/ B?qLXRv  
private void insertSort(int[] data, int start, int len) { $YM>HZe-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GZ.F q  
} U*.Wx0QM  
} c :S A#.  
} 6R%Ra  
} RJ ,a}w[9  
jt?937{  
堆排序: pXfg{2  
2qY`*Y.2  
package org.rut.util.algorithm.support; ,\ y)k}0lH  
x \.q zi  
import org.rut.util.algorithm.SortUtil; ]-Z="YPY  
_;] 3w  
/** X~DI d  
* @author treeroot "v @h  
* @since 2006-2-2 oT5 N_\  
* @version 1.0 cxBu2( Y  
*/ Hshm;\'  
public class HeapSort implements SortUtil.Sort{ YQyf:xJ  
_S43_hW  
/* (non-Javadoc) _b+=q:$/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jY>BU&  
*/ GXV<fc"1  
public void sort(int[] data) { WD=#. $z$  
MaxHeap h=new MaxHeap();  aKkG[q N  
h.init(data); >4gGb)  
for(int i=0;i h.remove(); Cv@ZzILyoK  
System.arraycopy(h.queue,1,data,0,data.length); .w/_Om4T*b  
} K:!|xr(1d  
50 :gk*hy  
private static class MaxHeap{ DYJ F6O  
-r%3"C=m  
void init(int[] data){ +I$ k_  
this.queue=new int[data.length+1]; E2M|b  
for(int i=0;i queue[++size]=data; @Sxb}XI!f  
fixUp(size); i%m]<yElm  
} kW"6Gc&HUN  
} ;++CMTza]  
5&WYL  
private int size=0; Ccmo(W+0  
(^fiw%#  
private int[] queue; %#!`>S)O  
6Z:<?_p%7g  
public int get() { y\]~S2}G  
return queue[1]; "0JG96&\  
} wAC*D=Qj  
bLrC_  
public void remove() { 2f'3Vjp~G  
SortUtil.swap(queue,1,size--); | |=q"h3(  
fixDown(1); &tT*GjPwg;  
} ?lg  
file://fixdown w)A@  
private void fixDown(int k) { fiuF!<#;6  
int j; $q_e~+SXT  
while ((j = k << 1) <= size) { /%w9F  
if (j < size %26amp;%26amp; queue[j] j++; &F4khga`^:  
if (queue[k]>queue[j]) file://不用交换 V) #vvnq  
break; bL: !3|M  
SortUtil.swap(queue,j,k); g4(vgWOW`  
k = j; pIKQx5;  
} "pdq_35  
} W,<P])  
private void fixUp(int k) { Q;]g9T[)  
while (k > 1) { S2/6VoGE  
int j = k >> 1; 8]!%mrS  
if (queue[j]>queue[k]) r|U'2+vn  
break; 8`e75%f:2  
SortUtil.swap(queue,j,k); =+K2`=y;WF  
k = j; zmV5k  
} %E\&9,  
} L0\97AF  
0G-M.s}A  
} Jx# r  
OF^:_%c/  
} g`6_Ao8  
$3aq+w:  
SortUtil: qJY'"_Q{  
Ba=P  
package org.rut.util.algorithm; q8U*  
RP}.Ei  
import org.rut.util.algorithm.support.BubbleSort; ?]i.Zi\[f  
import org.rut.util.algorithm.support.HeapSort; so~vnSQ!x  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4CR.=  
import org.rut.util.algorithm.support.ImprovedQuickSort; 86[/NTD<-  
import org.rut.util.algorithm.support.InsertSort; ,2H@xji [  
import org.rut.util.algorithm.support.MergeSort; :JBvCyj4PE  
import org.rut.util.algorithm.support.QuickSort; Qqt<  
import org.rut.util.algorithm.support.SelectionSort; %nU8 Ca  
import org.rut.util.algorithm.support.ShellSort; 9.F+)y@  
F$l]#G.@A  
/** *h=|KOS  
* @author treeroot >Qk4AMIO  
* @since 2006-2-2 K8,fw-S%  
* @version 1.0 e K%~`Y  
*/ 9cJzL"yi  
public class SortUtil { ]s3U+t?  
public final static int INSERT = 1; i #5rk(^t  
public final static int BUBBLE = 2; h{s- e.  
public final static int SELECTION = 3; y/!h.[  
public final static int SHELL = 4; $tGk,.#j  
public final static int QUICK = 5; C]22 [v4  
public final static int IMPROVED_QUICK = 6; x.Sq2rw]V  
public final static int MERGE = 7; SDY!!.  
public final static int IMPROVED_MERGE = 8; R)s@2S  
public final static int HEAP = 9; Jg I+k Nx  
P'^#I[G'  
public static void sort(int[] data) { `^t0379e  
sort(data, IMPROVED_QUICK); 3*13XQ  
} v!oXcHK/  
private static String[] name={ D8u_Z<6IjI  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V~rF`1+5N  
}; giU6f!%  
_x<CTFTL  
private static Sort[] impl=new Sort[]{ l56D?E8  
new InsertSort(), gAcXd<a0  
new BubbleSort(), X@$x(Zc  
new SelectionSort(), %]/O0#E3Kz  
new ShellSort(), q$[x*!~  
new QuickSort(), Rk#@{_  
new ImprovedQuickSort(), F1skI _!  
new MergeSort(), &5Ai&<q"p  
new ImprovedMergeSort(), /IDfGAE  
new HeapSort() K1S)S8.EZ8  
}; Z4U8~i  
>L6V!  
public static String toString(int algorithm){ #q`-"2"|  
return name[algorithm-1]; 1:I47/  
} Z-(Vfp4  
MjIp~?*  
public static void sort(int[] data, int algorithm) { tOn_S@/r  
impl[algorithm-1].sort(data); n !ty\E  
} L_Q1:nL-0  
X|Gsf= 1S  
public static interface Sort { e<_p\LiOS  
public void sort(int[] data); ocwh*t)<k  
} wIi_d6?  
2=pVX  
public static void swap(int[] data, int i, int j) { )*[3Imq/  
int temp = data; cC'{+j8-a  
data = data[j]; ?zwPF;L*  
data[j] = temp; R8 1z|+c|_  
} |2,'QTm=  
} 0) }bJ,5/  
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