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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。 MY<!\4/  
插入排序: ?;KJ (@Va  
|L_g/e1A3  
package org.rut.util.algorithm.support; cdtzf:#q  
HyX4ob[X  
import org.rut.util.algorithm.SortUtil; eR* ]<0=  
/** #`#aSqGmc  
* @author treeroot dW^_tzfF7  
* @since 2006-2-2 oIL+@}u7  
* @version 1.0 qiKtR  
*/ 5.K$ X$+7}  
public class InsertSort implements SortUtil.Sort{ ETWmeMN  
#PLB$$  
/* (non-Javadoc) a4a[pX,5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m/F(h-?  
*/ Zz)oMw  
public void sort(int[] data) { \I,Dje/:w  
int temp; g 2 { ?EP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i;'X}KW  
} ZhbY, wJ,  
} KGE-RK  
} -TU{r_!Z(  
mKFHT  
} 7E75s)KH  
QWW7I.9r  
冒泡排序: (Q]Y> '  
4\'81"e i  
package org.rut.util.algorithm.support; U`nS` p  
|e-+xX|;  
import org.rut.util.algorithm.SortUtil; SSsQu^A  
:Ye#NPOI  
/** 4FHX#`  
* @author treeroot X @jYQ.  
* @since 2006-2-2 K^qUlyv  
* @version 1.0 \PMKmJ X0O  
*/ > %cWTC  
public class BubbleSort implements SortUtil.Sort{ 9@z|2z2\G  
$?A Uk  
/* (non-Javadoc) dZiWVa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u*-<5& X  
*/ ;!Z7-OZX  
public void sort(int[] data) { rNzhP*Fw  
int temp; s)DNLx  
for(int i=0;i for(int j=data.length-1;j>i;j--){ m6Cd^'J9^  
if(data[j] SortUtil.swap(data,j,j-1); E~@HC5.M  
} 89- 8v^ Pq  
} ~CdseSo 9  
} ?eVuz x  
} k -DB~-L  
&Cpxo9-  
} *DI:MBJY  
}!7DF  
选择排序: k$x 'v#  
K\E]X\:  
package org.rut.util.algorithm.support; 4C9"Q,o%&  
R6@~   
import org.rut.util.algorithm.SortUtil; a~eLkWnh<k  
@?cXa: tX  
/** b= ec?n #7  
* @author treeroot 6M vR R  
* @since 2006-2-2 7 }MJK)  
* @version 1.0 -0IFPL8  
*/ V45Udwp ^  
public class SelectionSort implements SortUtil.Sort { yY-t4WeXP  
=qR7-Q8B  
/* DHNii_w4v  
* (non-Javadoc) lGHu@(n<  
* GKx,6E#JM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3k[<4-  
*/ -5_xI)i  
public void sort(int[] data) { 2gR_1*|  
int temp; +:Q/<^Z  
for (int i = 0; i < data.length; i++) { 1;~1U9V  
int lowIndex = i; M j%|'dZz  
for (int j = data.length - 1; j > i; j--) { 1z@# 8_@  
if (data[j] < data[lowIndex]) { U1!2nJ]  
lowIndex = j; 7 8inh%  
} QRh4f\fY  
} nMdN$E  
SortUtil.swap(data,i,lowIndex); ^5 =E`q".  
} $JSC+o(q3#  
} QZa#i L  
P 7.8tM2}  
} +X(^Q@  
3pjYY$'  
Shell排序: Jas|P}{=fT  
{)gd|JV*  
package org.rut.util.algorithm.support; l3#dfW{  
M9jo<+  
import org.rut.util.algorithm.SortUtil; -/2$P  
Qg$Nj=Cw  
/** yy.:0:ema  
* @author treeroot }' 0Xz9/ l  
* @since 2006-2-2 }vA nP]!A5  
* @version 1.0 [qMO7enu#  
*/ 8=o5;]Cg  
public class ShellSort implements SortUtil.Sort{ [QN7+#K,  
8*~:gZ7:  
/* (non-Javadoc) BW-P%:B1!R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D!T4k]^  
*/ /IW=+ri  
public void sort(int[] data) { WHLKf  
for(int i=data.length/2;i>2;i/=2){ gN'i+mQcu  
for(int j=0;j insertSort(data,j,i); v.v%k2;  
} E0A|+P '?  
} SFgIY]  
insertSort(data,0,1); bYB}A :  
} &j@J<*k  
5Zm_^IS  
/** l@J|p#0q  
* @param data EA E\Xv  
* @param j TaO;r=2  
* @param i ;fME4Sp  
*/ GE+csnA2  
private void insertSort(int[] data, int start, int inc) { K 0H!Ds9  
int temp; YaT+BRh?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'wnY>hN  
} "?&bh@P&  
} 9v,8OK)  
} m`q> _*  
w*P4_= :%Y  
} yBh"qnOT  
sq|@9GS0T  
快速排序: 9<c4y4#y  
`v2l1CQ: ^  
package org.rut.util.algorithm.support; Ngc+<  
w$:)wyR-  
import org.rut.util.algorithm.SortUtil; =usDI<3r  
_`[6jhNa!  
/** #$B,8LFz,$  
* @author treeroot )t|Q7$ v1  
* @since 2006-2-2 Kf^F#dA  
* @version 1.0 ZDJWd=E  
*/ KY&,(z   
public class QuickSort implements SortUtil.Sort{ W@C tFU9  
mg/kyua^  
/* (non-Javadoc) !:[n3.vm   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) na:^7:I  
*/ }v ,P3  
public void sort(int[] data) { .(]1PKW  
quickSort(data,0,data.length-1); /G+gk0FW  
} #R4KBXN  
private void quickSort(int[] data,int i,int j){ % peb{i  
int pivotIndex=(i+j)/2; m1i$>9,  
file://swap c} ET#2,  
SortUtil.swap(data,pivotIndex,j); cNc _ n<M  
)K3 vzX  
int k=partition(data,i-1,j,data[j]); tg3JU\  
SortUtil.swap(data,k,j); O t<%gj;^  
if((k-i)>1) quickSort(data,i,k-1); 0)a?W,+O  
if((j-k)>1) quickSort(data,k+1,j); :FpBz~!a  
6WcbJ_"mq  
} Qs X59d  
/** ;*H~Yb0  
* @param data )'|W[Sh?  
* @param i nqJV1h  
* @param j lD#1"$Coz  
* @return i3j jPN!  
*/ n(S-F g  
private int partition(int[] data, int l, int r,int pivot) { d'fpaLV  
do{ (k.7q~:  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e-=PT 1T`  
SortUtil.swap(data,l,r); 4!%LD(jB`B  
} Y!$ z7K  
while(l SortUtil.swap(data,l,r); oHnpwU  
return l; () ;7+  
} q#-H+7 5  
~0Q72  
} i>zyn-CuW  
$_5v^QL  
改进后的快速排序: 4aKy]zPoE  
ZM`_P!G  
package org.rut.util.algorithm.support; <qt%MM [Y  
)pa|uH +N  
import org.rut.util.algorithm.SortUtil; 1*b%C"C  
gRI|rDC)B  
/** nDw9  
* @author treeroot Y @&nW  
* @since 2006-2-2 7Apbi}")  
* @version 1.0 "T=LHjE  
*/ UF&Wgj [  
public class ImprovedQuickSort implements SortUtil.Sort { R)Fl@ Tn  
:''0z  
private static int MAX_STACK_SIZE=4096; K L~sEli  
private static int THRESHOLD=10; P~Owvs/=  
/* (non-Javadoc) kcUt!PL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Te#[+B?  
*/ _>64XUZ<n  
public void sort(int[] data) { `2  
int[] stack=new int[MAX_STACK_SIZE]; >[=`{B  
*.l=> #qF  
int top=-1; ka%pS  
int pivot; ox#4|<qM  
int pivotIndex,l,r; $, 42h  
t]%R4ymV  
stack[++top]=0; HX*U2<^  
stack[++top]=data.length-1; 3$;v# P$%N  
hJN A%  
while(top>0){ ohk =7d.'  
int j=stack[top--]; f` J"A:  
int i=stack[top--]; -.{7;6:(k  
,CF~UX% bU  
pivotIndex=(i+j)/2; 8;3FTF  
pivot=data[pivotIndex]; ^o:5B%}#[  
>UH=]$0N  
SortUtil.swap(data,pivotIndex,j); 1sA-BQL  
bNgcZ V.  
file://partition 9z}kkYk  
l=i-1;  ond/e&1  
r=j; iJeT+}  
do{ }clNXtN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5]+eLKXB  
SortUtil.swap(data,l,r); &>{L"{  
} 7?s>u937  
while(l SortUtil.swap(data,l,r); *CSFkWVa  
SortUtil.swap(data,l,j); GssoT<Y)Z  
zv@o- R$l  
if((l-i)>THRESHOLD){ o\[nGf C&  
stack[++top]=i; `#F>?g$2  
stack[++top]=l-1; uESHTX/[  
} n1h+`nsf  
if((j-l)>THRESHOLD){ rD?o97  
stack[++top]=l+1; -tZb\4kh  
stack[++top]=j; K)ib{V(50  
} k2;yl _7  
ppA8c6  
} G>"[nXmcu  
file://new InsertSort().sort(data); <o}t-Bgg  
insertSort(data); *L_wRhhk  
} '#?hm-Ga  
/** p9J(,}  
* @param data u"ow?[E  
*/ 3kg+*]tLx  
private void insertSort(int[] data) { Uz_{jAhW]  
int temp; L^}kwu#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wB{-]\H`\  
} nor`w,2VF  
} GEgf_C!%@  
} yMxS'j1  
i8F~$6C  
} ?jnEHn  
x g@;d  
归并排序: .w&Z=YM  
?##GY;#  
package org.rut.util.algorithm.support; oT w1w  
O"GzeEY7  
import org.rut.util.algorithm.SortUtil; ZN^Q!v  
Zzs pE}  
/** %' Fc%3  
* @author treeroot xhv)rhu@  
* @since 2006-2-2 ;F5%X\ t-  
* @version 1.0 klKt^h-  
*/ Bvwk6NBN  
public class MergeSort implements SortUtil.Sort{ Ghz)=3  
I| hG"i  
/* (non-Javadoc) -.y3:^){^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @ggM5mm  
*/ [@)|j=:i:  
public void sort(int[] data) { 5UqCRz<,R  
int[] temp=new int[data.length]; ZtiOf}@i\  
mergeSort(data,temp,0,data.length-1); }-kb"\X%g  
} 3ul  
{^v50d  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^H>vJT  
int mid=(l+r)/2; rmhB!Lo  
if(l==r) return ; ;X>KP,/r$  
mergeSort(data,temp,l,mid); u:k#1Nn!  
mergeSort(data,temp,mid+1,r); Ty5\zxC|  
for(int i=l;i<=r;i++){ i^(0,L  
temp=data; XyhdsH5%3!  
} wTLHg2'y^  
int i1=l; `S2=LJ  
int i2=mid+1; ]yyfE7{q  
for(int cur=l;cur<=r;cur++){ Y,9("'bo  
if(i1==mid+1) G{:L^2>  
data[cur]=temp[i2++]; h^4oy^9  
else if(i2>r) ,Tpds^  
data[cur]=temp[i1++]; $W)FpN;CW/  
else if(temp[i1] data[cur]=temp[i1++]; ,PnEDQ|l  
else l\bBc, %jt  
data[cur]=temp[i2++]; zOcMc{w0   
} /bVI'fT  
} 7dLPy[8";t  
'del|"h!M  
} i/->g:47P  
dM)fr  
改进后的归并排序: I".r`$XZ  
H7WKnn@  
package org.rut.util.algorithm.support; t+pI<c^]y  
~ohW9Z1  
import org.rut.util.algorithm.SortUtil; R8a xdV9(  
q\ ?6-?Mr  
/** y8sI @y6  
* @author treeroot <I} k%q'  
* @since 2006-2-2 mu*wX'.'  
* @version 1.0 Z)HQlm  
*/ 5(,WN  
public class ImprovedMergeSort implements SortUtil.Sort { UJQ!~g.y]  
n1v%S"^  
private static final int THRESHOLD = 10; tTY(I1  
7oUYRqd  
/* 4&?%"2  
* (non-Javadoc) BPW:W }  
* g{&ux k);  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H|Eu,eq-E  
*/ ,5nrovv  
public void sort(int[] data) { \aG>(Mr  
int[] temp=new int[data.length]; ";Lpf]<  
mergeSort(data,temp,0,data.length-1); he/FtkU  
} Eh JYdO[e  
t &*$@0A  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4bmpMF-  
int i, j, k; =U?"#   
int mid = (l + r) / 2; K,J:i^2  
if (l == r) ~;{)S}U@R  
return; \wM r[_LW  
if ((mid - l) >= THRESHOLD) H>VuUH|  
mergeSort(data, temp, l, mid); >2_J(vm>  
else TkK- r(=  
insertSort(data, l, mid - l + 1); M6?*\ 9E  
if ((r - mid) > THRESHOLD) !X8:#a(  
mergeSort(data, temp, mid + 1, r); a7ZPV1k  
else kfn5y#6NZ  
insertSort(data, mid + 1, r - mid); pbu8Ib8z  
Z_S~#[\7^]  
for (i = l; i <= mid; i++) { >RRb8=[J  
temp = data; Rj-<tR{  
} ]NN9FM.2b/  
for (j = 1; j <= r - mid; j++) { o-R;EbL  
temp[r - j + 1] = data[j + mid]; s`&8tP  
} CfAX,f"ZP  
int a = temp[l]; A|jaWZM-  
int b = temp[r]; /mvuSNk  
for (i = l, j = r, k = l; k <= r; k++) { =6/0=a[  
if (a < b) { afH`<!  
data[k] = temp[i++]; `_<K#AGAi  
a = temp; R5qC;_0cV  
} else { " GgK,d}%  
data[k] = temp[j--]; $/6.4" j  
b = temp[j]; n pBpYtG  
} \6*3&p  
} nx=Zl:Q}  
} 3nxJ`W5j  
Hw_(Af?C  
/** J-hP4t&x  
* @param data T0v;8E e  
* @param l u3Ua>A-  
* @param i #R@{Bu=C  
*/ _"=Yj3?G%  
private void insertSort(int[] data, int start, int len) { x?T/=C  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); G=(F-U;*  
} rj<r6  
} K t9:V,  
} On#RYy^}  
} q*,];j/>k  
YcT!`B   
堆排序: &ciU`//`  
]k5l]JB  
package org.rut.util.algorithm.support; $#1i@dI  
<S%M*j  
import org.rut.util.algorithm.SortUtil; -Y{P"!p0  
nUD)G<v  
/** d0eMDIm3R\  
* @author treeroot IA! ( 'Ks  
* @since 2006-2-2 -ZBk^p  
* @version 1.0 L+bU~N,+A  
*/ s7#w5fe  
public class HeapSort implements SortUtil.Sort{ @u#Tx%  
EJ"[{AV  
/* (non-Javadoc) # KK>D?.:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '3 5w(  
*/ Jn-iIl  
public void sort(int[] data) { ul1#_xp  
MaxHeap h=new MaxHeap(); UJ<eF/KSmG  
h.init(data); Y]Td+ Zi  
for(int i=0;i h.remove(); +2 !F6"hP  
System.arraycopy(h.queue,1,data,0,data.length); aovRm|aOo'  
} kK>PFk(  
CQ9B;i`  
private static class MaxHeap{ s `U.h^V  
9;NR   
void init(int[] data){ *^ g7kCe(  
this.queue=new int[data.length+1]; T]Pp\6ff  
for(int i=0;i queue[++size]=data; ORD@+ {  
fixUp(size); 5v<BB`XWp  
} _0<qS{RW  
} XOAZ  
.A//Q|ot!  
private int size=0; ]^uO3!+  
LSS3(l[,:  
private int[] queue; a 39Kl_\  
17 Hdj  
public int get() { O|}97a^  
return queue[1]; 8(&Jy RT  
} Tl6%z9rY@  
FhVi|V a  
public void remove() { "hdc B 0  
SortUtil.swap(queue,1,size--); e/'d0Gb-  
fixDown(1); h/W@R_Y  
} 1-!u=]JDE  
file://fixdown :''^a  
private void fixDown(int k) { ~m2tWi@  
int j; "9:1>Gr{G  
while ((j = k << 1) <= size) { F 0 q#.   
if (j < size %26amp;%26amp; queue[j] j++; E=+v1\t)]  
if (queue[k]>queue[j]) file://不用交换 a=>PGriL  
break; Ew~piuj  
SortUtil.swap(queue,j,k); ,Y6Me+5B  
k = j; v,#*%Gn`%  
} ZnVi.s ~1V  
} pj4M|'F7  
private void fixUp(int k) { X`YAJG  
while (k > 1) { B[w~bW|K  
int j = k >> 1; zc%#7"FM  
if (queue[j]>queue[k]) sS7r)HV&GI  
break; t>:2F,0K9  
SortUtil.swap(queue,j,k); ]-FK6jw  
k = j; a*@ 6G  
} maW,YOyRN  
} R] L|&{   
`Hld#+R  
} O RAKg.49  
of!Bz  
} SO^:6GuJ  
o*& D;  
SortUtil: yu"enA  
ZbD_AP  
package org.rut.util.algorithm; r PWn  
^dj avJ  
import org.rut.util.algorithm.support.BubbleSort; }c?/-ab>  
import org.rut.util.algorithm.support.HeapSort; #&a-m,Y$sx  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9 &a&O Z{  
import org.rut.util.algorithm.support.ImprovedQuickSort; /X>Fn9 mM  
import org.rut.util.algorithm.support.InsertSort; xrd@GTaI  
import org.rut.util.algorithm.support.MergeSort; {W*_^>;K  
import org.rut.util.algorithm.support.QuickSort; H.cN(7LXm  
import org.rut.util.algorithm.support.SelectionSort; xO"fg9a  
import org.rut.util.algorithm.support.ShellSort; gI a/sD2m>  
?$ T! =e"  
/** s=9gp$9m  
* @author treeroot -F\xZ  
* @since 2006-2-2 `&]<_Jc1  
* @version 1.0 bAS('R;4  
*/ oVk*G  
public class SortUtil { '_!j9A]g  
public final static int INSERT = 1; Q[+&n*  
public final static int BUBBLE = 2; tCH4-~,#  
public final static int SELECTION = 3; OW!cydA-  
public final static int SHELL = 4; SUwSZ@l^|  
public final static int QUICK = 5; (:v|(Gn/  
public final static int IMPROVED_QUICK = 6; Qvo(2(  
public final static int MERGE = 7; O&h3=?O&B  
public final static int IMPROVED_MERGE = 8; =g| e- XC  
public final static int HEAP = 9; t-7^deG'/n  
+s?0yH-%p  
public static void sort(int[] data) { _' KJ:3e  
sort(data, IMPROVED_QUICK); /3`#ldb%}  
} Hg$t,\j  
private static String[] name={ ~u| k1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" C":i56  
}; wi]ya\(*yl  
aD)XxXwozm  
private static Sort[] impl=new Sort[]{ <,/k"Y=  
new InsertSort(), 9ReH@5_bGM  
new BubbleSort(), W3K&C[f  
new SelectionSort(), aBv3vSq> Q  
new ShellSort(), "BSSA%u?c  
new QuickSort(), i Lr*W#E  
new ImprovedQuickSort(), WrWJ!   
new MergeSort(), ZuF"GNUC  
new ImprovedMergeSort(), J?4aSssE  
new HeapSort() Ws2SD6!4`  
}; !}%,rtI  
,9jq @_  
public static String toString(int algorithm){ sDNV_} h  
return name[algorithm-1]; *j9{+yO{ZE  
} Z +%Uwj  
\z'A6@  
public static void sort(int[] data, int algorithm) { []B9Me  
impl[algorithm-1].sort(data); IO/%X;Y_  
} 9gFb=&1k  
pdCn98}%-  
public static interface Sort { &%3$zgvR  
public void sort(int[] data); Fl)p^uUtl  
} f%r0K6p  
[>+}2-#  
public static void swap(int[] data, int i, int j) { V^Gz7`^  
int temp = data; \GA6;6%Oo  
data = data[j]; s%Ez/or(T  
data[j] = temp; I{>U7i 5  
} N$#518  
} 4-l G{I_S:  
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