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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。 vYFtw L`  
插入排序: is~"yE7  
5)5$h]Nz>  
package org.rut.util.algorithm.support; kM6i{{Q  
J#.f%VJ  
import org.rut.util.algorithm.SortUtil; Ky0}phGRu  
/** 2xLEB&  
* @author treeroot 3Pu8IXW  
* @since 2006-2-2 `~w|Xz  
* @version 1.0 =Bg $OX  
*/ #B!| sXC  
public class InsertSort implements SortUtil.Sort{ n~"qbtp}  
w"`Zf7a{/  
/* (non-Javadoc) Z8Iqgz7|y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v)p'0F#6A  
*/ !dQmg'_V  
public void sort(int[] data) { nxWm  
int temp; @4t_cxmD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7vo8lnQ{  
} 4,,DA2^!  
} %p48=|+  
} H(hE;|q/  
HLe/|x\@<  
} 4s s 4O  
) $`}~  
冒泡排序: Y#,&Tu  
@m5c<(bkfp  
package org.rut.util.algorithm.support; N \~}`({  
')Q  
import org.rut.util.algorithm.SortUtil; c@E;v<r'  
MzFFWk  
/** DsB30  
* @author treeroot 57fl<IM  
* @since 2006-2-2 4wMZNa<Sx  
* @version 1.0 y Nc@K|  
*/ ?gsPHPUS  
public class BubbleSort implements SortUtil.Sort{ j.&Y'C7GOC  
o%b6"_~%3  
/* (non-Javadoc) bm*.*A]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &6^ --cc  
*/ oVTXn=cYDp  
public void sort(int[] data) { 216`rQ}z  
int temp; 2Z-[x9t  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "MvSF1  
if(data[j] SortUtil.swap(data,j,j-1); nt]'>eX_}  
} DPlDuUOd  
} f,|g|&C  
} z`qb>Y"xf3  
} 0 <E2^  
eB&.keO  
} "Xg~1)%  
;^TSla+t+  
选择排序: 6b7c9n Z  
BM~6P|&qD  
package org.rut.util.algorithm.support; *@{  
zviTGhA  
import org.rut.util.algorithm.SortUtil; /1v:eoF;  
_l"=#i@L  
/** rB|1<jR  
* @author treeroot pO/vD~C>  
* @since 2006-2-2 fN1b+ d~*6  
* @version 1.0 Vx}e,(i  
*/ ddS3;Rk2  
public class SelectionSort implements SortUtil.Sort { soRY M  
n $lVmQ6  
/* z~-(nyaBS  
* (non-Javadoc) 4(91T  
* !}5f{,.RO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 74 W Ky  
*/ }rvX}   
public void sort(int[] data) { =9Vo[  
int temp; gyQPQ;"H$2  
for (int i = 0; i < data.length; i++) { !4a#);`G  
int lowIndex = i; S"VO@)d  
for (int j = data.length - 1; j > i; j--) { G|*&owJ  
if (data[j] < data[lowIndex]) { 67;6nXG0K  
lowIndex = j; l^XOW- ;u  
} m*L5xxc!  
} $dxA7 `L  
SortUtil.swap(data,i,lowIndex); %)72glB  
} 3-=AmRxW't  
} ^AShy`o^X  
Z l;TS%$  
} 1:iB1TclP  
*8J 0yv  
Shell排序: y^e3Gyk  
]%ewxF  
package org.rut.util.algorithm.support; '`YZJ  
]WzeJ"r {3  
import org.rut.util.algorithm.SortUtil; ^9`|QF  
joDqv,iW8  
/** `M*jrkM]x  
* @author treeroot op@=0d??  
* @since 2006-2-2 yM}3u4FG  
* @version 1.0 KYZ#.f@  
*/ @tJ4^<`P{  
public class ShellSort implements SortUtil.Sort{ r7sA;Y\  
aZ|?i }  
/* (non-Javadoc) em95ccs'-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =W;e9 6#  
*/ s q;!5qK  
public void sort(int[] data) { S[gACEZ =  
for(int i=data.length/2;i>2;i/=2){ 3~Lsa"/  
for(int j=0;j insertSort(data,j,i); c5|sda{  
} 1{5t.  
} )+"5($~  
insertSort(data,0,1); aM xd"cTzx  
} ?K;l 5$?%  
jU kxA7 }}  
/** P^# 4m  
* @param data Y]*&\Ex"\  
* @param j j /_&]6!  
* @param i \4LTViY]  
*/ Fg 8lX9L  
private void insertSort(int[] data, int start, int inc) { (c&%1bJ  
int temp; IBvn q8\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); e/_QS}OA  
} ZqdoYU'  
} s_}6#;  
} ZPY&q&R  
: 5['V#(o  
} u;]xAr1  
6" <(M@  
快速排序: ]=%6n@z'  
Fw*O ciC  
package org.rut.util.algorithm.support; 2y \ogF  
UM#.`  
import org.rut.util.algorithm.SortUtil; {NQCe0S+p  
.P`QCH;Ih  
/** $}r.fji,c  
* @author treeroot Zxd*%v;  
* @since 2006-2-2 qp)Wt6 k?  
* @version 1.0 BVj(Q}f8  
*/ liG|#ny{  
public class QuickSort implements SortUtil.Sort{ Be6+YM5Cl  
xkw=os  
/* (non-Javadoc) dA (n,@{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z;dRzwL  
*/ -%]1q#C>@  
public void sort(int[] data) { rQ_]%ies8  
quickSort(data,0,data.length-1); t,dm3+R  
} jVLJ qWP'!  
private void quickSort(int[] data,int i,int j){ Xz)qtDN|(  
int pivotIndex=(i+j)/2; j#2E Q  
file://swap u]7wd3(  
SortUtil.swap(data,pivotIndex,j); a??8)=0|}  
!V(r p80  
int k=partition(data,i-1,j,data[j]); s*_fRf:  
SortUtil.swap(data,k,j); 1og+(m`BL  
if((k-i)>1) quickSort(data,i,k-1); G&Dl($  
if((j-k)>1) quickSort(data,k+1,j); |`Noj+T47I  
(hdu+^Qj=  
} t$~'$kM)<  
/** /:Gy .  
* @param data rjiHP;-t1  
* @param i jDqG9]  
* @param j +}M3O]?4  
* @return `'^o45  
*/ ;x 2o|#`b  
private int partition(int[] data, int l, int r,int pivot) { Z\Ur F0  
do{  T&MhSJf#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); me{u~9&  
SortUtil.swap(data,l,r); r#2Fk &Z9  
} Z~QLjv&$/r  
while(l SortUtil.swap(data,l,r); xp'Q>%v  
return l; tK .1 *  
} 8Z_ 4%vUBg  
/gl8w-6  
} 0^dYu /i5  
Z]R#F0"U  
改进后的快速排序: qB,0(I1-!  
0IdA!.|  
package org.rut.util.algorithm.support; H8[A*uYL  
oSmETk\  
import org.rut.util.algorithm.SortUtil; jwAYlnQ^EM  
D*[J rq,  
/** +0z7}u\x  
* @author treeroot NN=^4Xpc:  
* @since 2006-2-2 23i2yT  
* @version 1.0 GM'yOJo  
*/ YI;iG[T,&  
public class ImprovedQuickSort implements SortUtil.Sort { G"E_4YkJ  
>;hAw!|#  
private static int MAX_STACK_SIZE=4096; i>,AnkI&  
private static int THRESHOLD=10;  U-4F  
/* (non-Javadoc) ~CkOiWC0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {ri={p]l  
*/ jLt3jN  
public void sort(int[] data) { tE {M  
int[] stack=new int[MAX_STACK_SIZE]; e2N K7  
v\4<6Z:4  
int top=-1; pvUV5^B(M  
int pivot; jq*`| m;Q  
int pivotIndex,l,r; j}",+H v  
pv sa?z;rP  
stack[++top]=0; M*ZN]9{^.  
stack[++top]=data.length-1; Y 0Fq -H  
r *6S1bW  
while(top>0){ (g/A uL  
int j=stack[top--]; =t)qy5  
int i=stack[top--]; N'9T*&o+  
z8awND  
pivotIndex=(i+j)/2; ;*<R~HJt  
pivot=data[pivotIndex]; uO eal^uS  
p> >H$t  
SortUtil.swap(data,pivotIndex,j); @-Q l6k  
-qDqJ62mC  
file://partition Jj+Q2D:  
l=i-1; -u'"l(n)~  
r=j; T9w=k)  
do{ rG6G~ |mS  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K&`1{,  
SortUtil.swap(data,l,r); l#1#3F  
}  [. 9[?8  
while(l SortUtil.swap(data,l,r); bI|G %  
SortUtil.swap(data,l,j); o}114X4q;  
Z;81 "   
if((l-i)>THRESHOLD){ &`v?oN9$  
stack[++top]=i; UAhWJ$(C  
stack[++top]=l-1; kl.;E{PL  
} 8\{z>y  
if((j-l)>THRESHOLD){ dB[4NT  
stack[++top]=l+1; (~zu4^9w  
stack[++top]=j; gAdqZJR%]  
} :M6v<Kg{;  
n.2:fk  
} j\~,Gtn>Z  
file://new InsertSort().sort(data); +71<B>L   
insertSort(data); qc @cd i  
} ./k7""4   
/** wCNn/%C  
* @param data I ]ZZN6"  
*/ r5S/lp+Y+N  
private void insertSort(int[] data) { ;Go^)bN ;  
int temp; S\8v)|Pr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^gvTc+|  
} zU ~ Ff"<  
} 2vjkThh`I  
} b|Emu!9U  
.waw=C  
} px K&aY8  
"nu]3zcd  
归并排序: [M~tH *4"  
O%\cRn8m  
package org.rut.util.algorithm.support; zvdut ,6<  
"4\  
import org.rut.util.algorithm.SortUtil; 3< ?+Yhq  
>bf.T7wy  
/** 8(\}\4G_  
* @author treeroot s<F*kLib  
* @since 2006-2-2 Zyz#xMmM  
* @version 1.0 gPMfn:a-8  
*/ s%K(hk  
public class MergeSort implements SortUtil.Sort{ dz([GP'-*  
\(j*K6#  
/* (non-Javadoc) .yZLC%}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A|r3c?q  
*/ ]<\YEz&A  
public void sort(int[] data) { Q*>)W{H&)  
int[] temp=new int[data.length]; x5Lbe5/P  
mergeSort(data,temp,0,data.length-1); 37zB X~  
} :,JaOn'  
3Xu|hkK\e  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5N|LT8P}Z  
int mid=(l+r)/2; -[-oz0`Sl{  
if(l==r) return ; yqq1a o  
mergeSort(data,temp,l,mid); O68-G  
mergeSort(data,temp,mid+1,r); JpfA+r  
for(int i=l;i<=r;i++){ 49QsT5b)  
temp=data; BeVDTk :  
} +112{v=!i  
int i1=l; '37 {$VHw  
int i2=mid+1; J#Hh4Kc  
for(int cur=l;cur<=r;cur++){ H **tMq  
if(i1==mid+1) |?^<=%  
data[cur]=temp[i2++]; [G|.  
else if(i2>r) ``WTg4C(Y  
data[cur]=temp[i1++]; n]IF`kYQV  
else if(temp[i1] data[cur]=temp[i1++]; }Kgi!$<aQx  
else ~o^|>]  
data[cur]=temp[i2++]; d,(y$V+  
} CwX?%$S   
} G)?*BH  
;pW8a?  
} M[mYG _{J  
|"SZpx  
改进后的归并排序: cRnDAn#42  
KNAvLcg  
package org.rut.util.algorithm.support; dRron_'  
-pYmM d,  
import org.rut.util.algorithm.SortUtil; Ea@0>_U|  
f1_;da  
/**  pRobx  
* @author treeroot L K #A  
* @since 2006-2-2 N# }w1]  
* @version 1.0 _k2R^/9Ct%  
*/ ;]-08lzO<4  
public class ImprovedMergeSort implements SortUtil.Sort { dP8qP_77A~  
kT@ITA22  
private static final int THRESHOLD = 10; ]AY 4bm  
Ww-x+U\l  
/* ..8t1+S6]  
* (non-Javadoc) k2D*`\ D  
* tw$EwNI[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J=3{<Xl  
*/ hH1Q:}a  
public void sort(int[] data) { _s^tL2Pc  
int[] temp=new int[data.length]; h.vy SwF"j  
mergeSort(data,temp,0,data.length-1); JI!1 .]&  
} vMp=\U-~^  
%1A8m-u]M  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1 7~Pc  
int i, j, k; C|&tdh :g  
int mid = (l + r) / 2; 2X2Ax~d@  
if (l == r) ;O hQBAC  
return; 8?nn4]P  
if ((mid - l) >= THRESHOLD) s5@BVD'}E  
mergeSort(data, temp, l, mid);  BjH|E@z  
else uQW)pD{_  
insertSort(data, l, mid - l + 1); fS4foMI63)  
if ((r - mid) > THRESHOLD) q0+N#$g#  
mergeSort(data, temp, mid + 1, r); -NwG' U~  
else ` 7iA?;  
insertSort(data, mid + 1, r - mid); %Y ZC dS  
fxcE1=a  
for (i = l; i <= mid; i++) { FvT4?7-  
temp = data; NRx 7S 9W  
} v)du]  
for (j = 1; j <= r - mid; j++) { SSF:PTeG>  
temp[r - j + 1] = data[j + mid]; 4~Cf_`X}]  
} :5~Dca_iU4  
int a = temp[l]; 1/9*c *w  
int b = temp[r]; N9/k`ZGC  
for (i = l, j = r, k = l; k <= r; k++) { F7=9> ,  
if (a < b) { @H?OHpJ"`  
data[k] = temp[i++]; K`N$nOw  
a = temp; bW W!,-|R  
} else { LOkgeJuWv  
data[k] = temp[j--]; i\IpS@/{-v  
b = temp[j]; yT/rH- j;5  
} > V(C>^%->  
} 0e8  
} epnZGz,A  
mHMsK}=~  
/** .vKgiIC:  
* @param data 6Mc&=}bV  
* @param l k5\V:P=#  
* @param i Ja3#W K  
*/ {Ycgq%1>]  
private void insertSort(int[] data, int start, int len) { 9mD dX  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -I5]#%eX^  
} $R #_c}  
} MlWKfe<  
} {O _X/y~  
} aZ~e;}w.Zq  
c_qox  
堆排序: LkJq Bg  
85# 3|5n  
package org.rut.util.algorithm.support; -`q!mdA2  
LBG`DYR@  
import org.rut.util.algorithm.SortUtil; z\tY A  
Q+Nnj(AQY  
/** @~2k5pa  
* @author treeroot A/=cGE  
* @since 2006-2-2 6g-jhsW6  
* @version 1.0 P7}w^#x  
*/ w-WAgAch  
public class HeapSort implements SortUtil.Sort{ qE2<vjRg  
&k)+]r  
/* (non-Javadoc) 3)VO{Cj!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -aJ(-Np$f  
*/ 49E| f ^q  
public void sort(int[] data) { %t_'rv  
MaxHeap h=new MaxHeap(); G:b6Wf  
h.init(data); x%X3FbF]  
for(int i=0;i h.remove(); &H# l*  
System.arraycopy(h.queue,1,data,0,data.length); A&1EOQ=N  
} eJqx,W5MK]  
yzfiH4  
private static class MaxHeap{ %u%;L+0Q[  
%GjG.11V,_  
void init(int[] data){ Aa1#Ew<r  
this.queue=new int[data.length+1]; 9Y2u/|!.3  
for(int i=0;i queue[++size]=data; ; ]% fFcy  
fixUp(size); 9*iVv)jd  
} K_U`T;Z\  
} .n IGs'P  
Q']'KU.  
private int size=0; E7h@c>IK  
7V=deYt_p  
private int[] queue; h(q4 B~  
lg-`zV3  
public int get() { (1S9+H>g  
return queue[1]; =4q5KI  
} ; t7F%cDA  
WuVsW3@  
public void remove() { W9gQho%9b  
SortUtil.swap(queue,1,size--); }k AE  
fixDown(1); tx;2C|S$oU  
} 3 a(SmM:  
file://fixdown A["6dbvv  
private void fixDown(int k) { 5Zc  
int j; 8Ie0L3d-  
while ((j = k << 1) <= size) { 7202N?a {  
if (j < size %26amp;%26amp; queue[j] j++; r8R7@S2V'  
if (queue[k]>queue[j]) file://不用交换 n)cc\JPQ  
break; 71Q`B#t0'Z  
SortUtil.swap(queue,j,k); mn1!A`$  
k = j; t`&mszd~T  
} 6R m dt  
} fC^d@4ha  
private void fixUp(int k) { ajRht +{  
while (k > 1) { Q >yj<DR  
int j = k >> 1; m?Jnb\0  
if (queue[j]>queue[k]) =WCE "X  
break; dh}"uM}a  
SortUtil.swap(queue,j,k); L9hL@  
k = j; _j$V[=kdM/  
} X%!?\3S  
} sk5=$My  
OvdBUcp[  
} +:#g6(P]  
BB,-HhYT0  
} #\F8(lZ  
Mf"(P.GIS  
SortUtil: =S^vIo)  
kdA]gpdw  
package org.rut.util.algorithm; Z^F>sUMR  
tm34Z''.>  
import org.rut.util.algorithm.support.BubbleSort; ]Gm&Kn >  
import org.rut.util.algorithm.support.HeapSort; [PrJf"Z "  
import org.rut.util.algorithm.support.ImprovedMergeSort; -[=@'N P  
import org.rut.util.algorithm.support.ImprovedQuickSort; LUx'Dm"  
import org.rut.util.algorithm.support.InsertSort; T}p|_)&y  
import org.rut.util.algorithm.support.MergeSort; Rp zuSh  
import org.rut.util.algorithm.support.QuickSort; 6EWCJ%_  
import org.rut.util.algorithm.support.SelectionSort; 9 [E/^  
import org.rut.util.algorithm.support.ShellSort; WFug-#;e  
V!e`P  
/** Q\~#cLJ/  
* @author treeroot ieEt C,U  
* @since 2006-2-2 ENYc.$ r  
* @version 1.0 oPAc6ObOV~  
*/ 6(Cjak+~!  
public class SortUtil { dg N #"  
public final static int INSERT = 1; }&ew}'*9)  
public final static int BUBBLE = 2; qqYQ/4Ajw  
public final static int SELECTION = 3; dZ,7q_r,~  
public final static int SHELL = 4; tr 8Q{  
public final static int QUICK = 5; N:^4On VR  
public final static int IMPROVED_QUICK = 6; C`oB [  
public final static int MERGE = 7; }D~m%%,  
public final static int IMPROVED_MERGE = 8; &@&^k$du8q  
public final static int HEAP = 9; aIfB^M*c5  
g[{rX4~|  
public static void sort(int[] data) { sQzr+]+#9  
sort(data, IMPROVED_QUICK); iQh:y:Jo1&  
} p{V(! v|  
private static String[] name={ sYTToanA$?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 78mJ3/?rC  
}; FP6Jf I8  
fb]=MoiJ  
private static Sort[] impl=new Sort[]{ 7z&^i-l.  
new InsertSort(), \Zk<|T61$  
new BubbleSort(), ^^Q> AfTR.  
new SelectionSort(), ||Wg'$3  
new ShellSort(), ,(yaWd6  
new QuickSort(), ]G~u8HPH!m  
new ImprovedQuickSort(), j1@PfKh  
new MergeSort(), FZ% WD@=  
new ImprovedMergeSort(), <dY{@Cgw=  
new HeapSort() VDy_s8Z#  
}; %+$!ctn  
Gm\jboef]  
public static String toString(int algorithm){ {2&MyxV  
return name[algorithm-1]; ^6 ,}*@  
} mc6W"  
s[*I210  
public static void sort(int[] data, int algorithm) { F.R0c@&W  
impl[algorithm-1].sort(data); aOW~! f/M  
} \?k"AtL  
tUFXx\p  
public static interface Sort { "FfP&lF/  
public void sort(int[] data); o, qBMo^.  
} 0vz!)  
H%Sx*|  
public static void swap(int[] data, int i, int j) { .V^h<d{  
int temp = data; HtI>rj/\ x  
data = data[j]; @v\jL+B+m  
data[j] = temp; |i'w"Tz4  
} Ef6LBNWY.  
} hniTMO  
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