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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。 D'\gy$9m1  
插入排序:  s{T6qJ  
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package org.rut.util.algorithm.support; F+m;y  
CdNb&Nyz  
import org.rut.util.algorithm.SortUtil; e6I7N?j  
/** !TPKD  
* @author treeroot U~Rs?JmTdD  
* @since 2006-2-2 2$yNryd  
* @version 1.0 LCemM;o  
*/ y3@5~4+  
public class InsertSort implements SortUtil.Sort{ _ v3VUm#  
Hus.Jfam  
/* (non-Javadoc) Pbl#ieZM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /zIUYY  
*/ OCbwV7q:  
public void sort(int[] data) { }6 Mo C0  
int temp; #-bz$w#*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |aS272'  
} G57c 8}\4  
} G9r~O#=gy  
} d&t,^Hj  
R b=q #  
} k[]2S8K2  
ix_&<?8  
冒泡排序: ~ qezr\$2  
fnJt8Y4  
package org.rut.util.algorithm.support; gH|:=vfYUR  
7Nlk:f)*-  
import org.rut.util.algorithm.SortUtil; )EIT>u=  
%<^j=K= 0  
/** A\)~y{9bQ  
* @author treeroot BKd?%V8:Q  
* @since 2006-2-2 j4}Q  
* @version 1.0 V5bB$tL}3  
*/ LHd9q ^D  
public class BubbleSort implements SortUtil.Sort{ *w[0uQL5Z  
p?'&P!  
/* (non-Javadoc) 7&vDx=W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sc$I,|d2  
*/ @ x5LrQ_`r  
public void sort(int[] data) { ?CE&F<?#@  
int temp; @*-t.b2k  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;><m[l6  
if(data[j] SortUtil.swap(data,j,j-1); aQglA  
} P$*9Z@  
} WSOz^]  
} M^jEp  
} -qdt$jIM  
28LYGrB  
} B PG&R  
WM9z~z'2a  
选择排序: 0@kL<\u  
CX#d9 8\b  
package org.rut.util.algorithm.support; 7(C:ty9  
#X qnH  
import org.rut.util.algorithm.SortUtil; WlmkM?@  
my%MXTm2  
/** W?D-&X^ny  
* @author treeroot _[$,WuG1  
* @since 2006-2-2 \"6?*L|]  
* @version 1.0 C!W0L`r  
*/ k[{ ~ eN:  
public class SelectionSort implements SortUtil.Sort { ~ ;ObT=  
PUErvL t  
/* /-Z}=  
* (non-Javadoc) '>[Ut@lT;  
* arN=OB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) % !Ih=DZ  
*/ -|4 Oq  
public void sort(int[] data) { R$i-%3  
int temp; e@7UL|12  
for (int i = 0; i < data.length; i++) { du_~P"[  
int lowIndex = i; N."x@mV  
for (int j = data.length - 1; j > i; j--) { Ih)4.lLcKn  
if (data[j] < data[lowIndex]) { [I`:%y  
lowIndex = j; fw)Q1"|  
} D 3Tqk^5  
} rG3?Z^&R+  
SortUtil.swap(data,i,lowIndex); moL3GV%]Gq  
} AejM\#>  
} y+nX(@~f]  
"<&) G{  
} DcN!u6sJ  
~]SCf@pRk  
Shell排序: 63/a 0Yn  
P=R-1V  
package org.rut.util.algorithm.support; zJov*^T-C  
yX/{eX5dr  
import org.rut.util.algorithm.SortUtil; zZ;V9KM>v  
&pW2R}  
/** lN*beOj  
* @author treeroot 7QRkXs  
* @since 2006-2-2 fGoJP[ae  
* @version 1.0 wU|jw(  
*/ ic}mru  
public class ShellSort implements SortUtil.Sort{ k%V YAON  
p4D.nB8  
/* (non-Javadoc) {@hJPK8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RoNE7|gF:  
*/ 6B+?X5-6DH  
public void sort(int[] data) { D~n-;T  
for(int i=data.length/2;i>2;i/=2){ d .%2QkL  
for(int j=0;j insertSort(data,j,i); Yz#E0aTTA  
} _ Y7 Um  
} `R!Q(rePx  
insertSort(data,0,1); g{CU1c)B  
} nf1O8FwRb  
wV-9T*QrM  
/** $$i Gs6az  
* @param data #n]K$k>  
* @param j oxL)Jx\c9A  
* @param i TjHt:%7.  
*/ j8c5_&  
private void insertSort(int[] data, int start, int inc) { C-XJe~  
int temp; 6q^\pJY%&7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hbEqb{#}@  
} _=}.Sg5Q  
} $PRUzFZ  
} _r>kR7A\{  
_qk yU)z  
} #x`K4f)  
|AS~sjWSJ  
快速排序: ae" o|Q  
/B)2L]6p  
package org.rut.util.algorithm.support; Mfnfp{.)  
?TJ4L/"(k6  
import org.rut.util.algorithm.SortUtil; sDAP'&  
Xk\IO0GF  
/** BS(jC  
* @author treeroot d0R;|p''Z  
* @since 2006-2-2 bM.$D-?dF*  
* @version 1.0 e?FQ6?  
*/ oW^>J-  
public class QuickSort implements SortUtil.Sort{ +\$c_9|C+  
X *EseC  
/* (non-Javadoc) *,t/IA|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _>ZC;+c?  
*/ suE8"v!sk  
public void sort(int[] data) { wY ??#pS  
quickSort(data,0,data.length-1); uQ|LkL%< ^  
} 4ETHaIiWp  
private void quickSort(int[] data,int i,int j){ m#[9F']Z`  
int pivotIndex=(i+j)/2; #+i:s92],  
file://swap B):ZX#  
SortUtil.swap(data,pivotIndex,j); LcB+L](  
-xbs'[  
int k=partition(data,i-1,j,data[j]); cQ'x]u_  
SortUtil.swap(data,k,j); mE_%  
if((k-i)>1) quickSort(data,i,k-1); h=\1ZQKC)  
if((j-k)>1) quickSort(data,k+1,j); I L,lXB<  
v|KIVBkbT  
} +r7hc;+G  
/** ]=9 d'WL  
* @param data %a|Qw(4\  
* @param i oUO3,2bn  
* @param j &nwS7n1eb  
* @return pU'${Z~b  
*/ ]#W7-Q;]  
private int partition(int[] data, int l, int r,int pivot) { /q}(KJX  
do{ /nsBUM[;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #!E`%' s]  
SortUtil.swap(data,l,r); dm]g:KWg  
} 9HEqB0|ZRu  
while(l SortUtil.swap(data,l,r); 7r^Cs#b+I  
return l; (>E/C^Tc%  
} #d*0 )w  
({@" {  
} 5D2mZ/  
q*5L",  
改进后的快速排序: 7VG*Wu  
LT>_Y`5>  
package org.rut.util.algorithm.support; hW'b'x<  
 v\CBw"  
import org.rut.util.algorithm.SortUtil; ." gq[0_YS  
j}d):3!  
/** mZc;n.$U  
* @author treeroot wEwR W  
* @since 2006-2-2 $${3I4  
* @version 1.0 dQ~GE}[  
*/ 'wtb"0 }  
public class ImprovedQuickSort implements SortUtil.Sort { K F_Uu  
x;`G n_  
private static int MAX_STACK_SIZE=4096; )+|wrK:*v  
private static int THRESHOLD=10; ,X1M!'  
/* (non-Javadoc) (X-( WMsqQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]f?r@U'AS|  
*/ ;Z`a[\i':  
public void sort(int[] data) { >2#<tH0  
int[] stack=new int[MAX_STACK_SIZE]; Z,SV9 ~M  
F_g(}wE# q  
int top=-1; ]n>9(Mp!M  
int pivot; y z!L:1DG  
int pivotIndex,l,r; 2wnk~URj  
YFPse.2$a  
stack[++top]=0; $]Ix(7@W  
stack[++top]=data.length-1; *0Z6H-Do,  
p`rjWpH  
while(top>0){ U, 7  
int j=stack[top--]; Er|&4-9  
int i=stack[top--]; &bfM`h'  
2O@ON/  
pivotIndex=(i+j)/2; I4+1P1z  
pivot=data[pivotIndex]; `?.6}*4@_A  
O`1!&XT{x  
SortUtil.swap(data,pivotIndex,j); 5._QI/d)'J  
R+0gn/a[G  
file://partition P^=B6>e  
l=i-1; 0^Vw^]w  
r=j; a%BC{XX  
do{ /3k[3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uL-kihV:-  
SortUtil.swap(data,l,r); TTl9xs,nO  
} lhJY]tQt/  
while(l SortUtil.swap(data,l,r); t#_6GL  
SortUtil.swap(data,l,j); llR5qq=t  
)m3emMO2  
if((l-i)>THRESHOLD){ Q:7P /  
stack[++top]=i; <*z'sUh+}  
stack[++top]=l-1; A^6z.MdYZ  
} wBg?-ji3<  
if((j-l)>THRESHOLD){ {d'B._#i  
stack[++top]=l+1; ?lgE9I]  
stack[++top]=j; r>|S4O  
} X_nbNql  
Oi& 9FS  
} Sin)]zG~0  
file://new InsertSort().sort(data); UMBeY[ ?  
insertSort(data); G~.VW48{n  
} x=a#|]ngG  
/** y7CXE6Y  
* @param data 9z{}DBA  
*/ M,p0wsj;  
private void insertSort(int[] data) { #y7MB6-  
int temp; 1|-C(UW>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -c1-vGW/  
} qGR1$\]  
} m*HUT V  
} @ N'P?i  
a6ryyt 5  
} T,a{mi.hNR  
0S;Ipg  
归并排序: t4d/%b~{:U  
YGM7?o  
package org.rut.util.algorithm.support; p=eSJ*  
"k  
import org.rut.util.algorithm.SortUtil; ;nbEV2Y<  
e@vZg8Ie  
/** g#l!b%$  
* @author treeroot @oj_E0i3  
* @since 2006-2-2 #Pz'-lo  
* @version 1.0 CE  
*/ `|"o\Bg<  
public class MergeSort implements SortUtil.Sort{ :jkPV%!~  
fj( WH L  
/* (non-Javadoc) (QqeMG,Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2Hx*kh2  
*/ yB *aG  
public void sort(int[] data) { s"nntC  
int[] temp=new int[data.length]; psx_gv,  
mergeSort(data,temp,0,data.length-1); _C1u}1hW#  
} ]Hi1^Y<  
Q2]7|C  
private void mergeSort(int[] data,int[] temp,int l,int r){ "30=!k  
int mid=(l+r)/2; [:e>FXV  
if(l==r) return ; y6sY?uu  
mergeSort(data,temp,l,mid); Yz0HB EA  
mergeSort(data,temp,mid+1,r); -:L7iOzgD  
for(int i=l;i<=r;i++){ yGWl8\,j0  
temp=data; R6>*n!*D@  
} &1=,?s]&  
int i1=l; Fd80T6[  
int i2=mid+1; X=6L-^ o)  
for(int cur=l;cur<=r;cur++){ hHcevSr  
if(i1==mid+1) ~e,K  
data[cur]=temp[i2++]; `Has3AX8  
else if(i2>r) 1 rbc}e  
data[cur]=temp[i1++]; HlkjyD8  
else if(temp[i1] data[cur]=temp[i1++]; &.z-itiV  
else *"F*6+}w"  
data[cur]=temp[i2++]; h<?I?ZR0$  
} "FGgem%9  
} _h=h43'3  
s:,fXg25J  
} GO][`zZJ]  
XM?c*,=fu  
改进后的归并排序: p((.(fx  
P??pWzb6HH  
package org.rut.util.algorithm.support; ?H!&4o  
U'5p;j)_  
import org.rut.util.algorithm.SortUtil; lu.xv6+  
w8>bct3@  
/** {BAZ`I  
* @author treeroot O f-gG~  
* @since 2006-2-2 C`3fM05g  
* @version 1.0 ^( C,LVP<  
*/ ko!aX;K  
public class ImprovedMergeSort implements SortUtil.Sort { B1i'Mzm-4  
\[+':o`LH  
private static final int THRESHOLD = 10; Z Wx[@5  
#vBSg  
/* R5uz<  
* (non-Javadoc) [ CU8%%7  
* 55>+%@$,a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c No)LF  
*/ ,<OS: ]  
public void sort(int[] data) { Wk-. dJ  
int[] temp=new int[data.length]; ND 8;1+3  
mergeSort(data,temp,0,data.length-1); b_~KtMO  
} ' e x/IqbK  
=<= [E:B  
private void mergeSort(int[] data, int[] temp, int l, int r) { T z+Y_  
int i, j, k; MI8c>5?  
int mid = (l + r) / 2; E*9W'e~=  
if (l == r) =`gFwH<   
return; KHaYb5(a[  
if ((mid - l) >= THRESHOLD) u8y('\(  
mergeSort(data, temp, l, mid); g@>y`AFnr  
else %-!:$ 1;  
insertSort(data, l, mid - l + 1); /h&>tYVio  
if ((r - mid) > THRESHOLD) ZhoB/TgdL  
mergeSort(data, temp, mid + 1, r); ,Qe`(vU*s  
else  :KRe==/  
insertSort(data, mid + 1, r - mid); 63i&e/pv  
9B3}LVg\  
for (i = l; i <= mid; i++) { *(*XNd||  
temp = data; zq#gf  
} ooYs0/,{  
for (j = 1; j <= r - mid; j++) { zfml^N  
temp[r - j + 1] = data[j + mid]; ?nR$>a`  
} }T=\hM  
int a = temp[l]; ,}Ic($ To  
int b = temp[r]; AlgVsE%Va  
for (i = l, j = r, k = l; k <= r; k++) { VD=F{|^  
if (a < b) { n6INI~,  
data[k] = temp[i++]; mP)im]H  
a = temp; ]b&qC (  
} else { ;wr]_@<~  
data[k] = temp[j--]; U3c!*i  
b = temp[j]; yucbEDO.  
} >LR+dShG  
} BQ~&gy{  
} v{U1B  
FCYZ9L5uF  
/** gJ Z9XLPC  
* @param data l)1ySX&BU  
* @param l X@B,w_b  
* @param i @j4~`~8  
*/ eJ$ {`&J  
private void insertSort(int[] data, int start, int len) { B;L^!sLP  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2) A$bx  
} *icxK  
} rMUQh~a/  
} `qbsDfq@  
} Tq >?.bq9  
W3i X;-Z  
堆排序: |fm"{$u  
<.6$zcW  
package org.rut.util.algorithm.support; 9hs7B!3pc>  
!1?Nc}T0Q&  
import org.rut.util.algorithm.SortUtil; * @j#13.  
nr{ }yQ u  
/** gCS%J40r  
* @author treeroot F (:] lM|  
* @since 2006-2-2 3gmu-t v  
* @version 1.0 ps?B;P  
*/ .gHL(*1P  
public class HeapSort implements SortUtil.Sort{ ;0\  
D&&11Iz&  
/* (non-Javadoc) )8Sm}aC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5fa_L'L#  
*/ {R. @EFkZ  
public void sort(int[] data) { *,__\/U98  
MaxHeap h=new MaxHeap(); E)l@uPA'1  
h.init(data); nbz?D_  
for(int i=0;i h.remove(); Rs%6O|u7  
System.arraycopy(h.queue,1,data,0,data.length); Wj. _{  
} ~x}=lKN  
.:s**UiDR  
private static class MaxHeap{ 0IjQqI  
"Mmvf'N  
void init(int[] data){ /!0{9F<  
this.queue=new int[data.length+1]; jCbxI^3A  
for(int i=0;i queue[++size]=data; %7rWebd-  
fixUp(size); o%A@ OY  
} ;H8A"$%n~  
} Ow]c,F}^  
A@"CrVE  
private int size=0; L pdp'9>I  
m)?cXM  
private int[] queue; eJ!a8   
D8Vb@5MW  
public int get() { ;HaG-c</  
return queue[1]; O ijG@bI8  
} PDssEb7  
H\<C@OkJS}  
public void remove() { n ZM|8  
SortUtil.swap(queue,1,size--); yf7p0;$?  
fixDown(1); N8l(m5Kk,k  
} "VcG3.  
file://fixdown t1 .6+  
private void fixDown(int k) { wBXgzd%L  
int j; KArnNmJ9  
while ((j = k << 1) <= size) { eESJk 14  
if (j < size %26amp;%26amp; queue[j] j++; v 1O* Q  
if (queue[k]>queue[j]) file://不用交换 hzc2c.gcF  
break; 2 }Q)&;u  
SortUtil.swap(queue,j,k); PRCr7f  
k = j; {N$G|bm]u<  
} rm4j8~Ef  
} U vOB`Vj  
private void fixUp(int k) { x_ \e&"x  
while (k > 1) { @cF aYI  
int j = k >> 1; N*My2t_+E  
if (queue[j]>queue[k]) IXf@YV  
break; _, ;c2  
SortUtil.swap(queue,j,k); !W8'apG&[  
k = j; rf8`|9h"7  
} "sRR:wzQu  
} .yF7{/  
p_ QL{gn  
} c>r0 N[  
.)mw~3]  
} 9oY%v7  
h7  >  
SortUtil: p9 |r y+t  
Rj% q)aw'  
package org.rut.util.algorithm; @$;"nVZ4v  
M(S:&GOU  
import org.rut.util.algorithm.support.BubbleSort; ]#[ R^t  
import org.rut.util.algorithm.support.HeapSort; 6?ylSQ]1  
import org.rut.util.algorithm.support.ImprovedMergeSort; OY6l t.t  
import org.rut.util.algorithm.support.ImprovedQuickSort; *Oo2rk nQ  
import org.rut.util.algorithm.support.InsertSort; |k+Y >I&  
import org.rut.util.algorithm.support.MergeSort; y4Plm.  
import org.rut.util.algorithm.support.QuickSort; 6 9,;=  
import org.rut.util.algorithm.support.SelectionSort; @K]D :MSS  
import org.rut.util.algorithm.support.ShellSort; 3%xj-7z W  
SVaC)O(  
/** z&d&Ky  
* @author treeroot V4Ql6vg_f  
* @since 2006-2-2 0=&Hm).  
* @version 1.0 ek#{!9-  
*/ [>4Ou^=1  
public class SortUtil { 1< ;<?  
public final static int INSERT = 1; }dE0WJcO  
public final static int BUBBLE = 2; ;e_n7>'#%  
public final static int SELECTION = 3; ^'C1VQ%  
public final static int SHELL = 4; ; eq^m,oz  
public final static int QUICK = 5; t8 #&bU X  
public final static int IMPROVED_QUICK = 6; X'WbS  
public final static int MERGE = 7; 'zZN]P  
public final static int IMPROVED_MERGE = 8; q!9SANTx  
public final static int HEAP = 9; R y0n_J:7  
zrG&p Z  
public static void sort(int[] data) { Qg9 N?e{z  
sort(data, IMPROVED_QUICK); }0|,*BkI m  
} KyNv)=x4c  
private static String[] name={ \ M8;CN  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hIC$4lR~  
}; X5527`?e  
*^Wx=#w$V  
private static Sort[] impl=new Sort[]{ 2RidI&?c<  
new InsertSort(), ^6|Q$]}Ok  
new BubbleSort(), =ex71qj)  
new SelectionSort(), NS;,(v{*N  
new ShellSort(), X[ }5hZcX  
new QuickSort(), uG2Hzav  
new ImprovedQuickSort(), J(VJMS;_  
new MergeSort(), c:4M|t=  
new ImprovedMergeSort(), {o4m3[C7=}  
new HeapSort() F%t`dz!L  
}; sC48o'8(  
AY{caM  
public static String toString(int algorithm){ ?x"<0k1g  
return name[algorithm-1]; Id(L}i(X  
} {d(@o!;Fi  
kA{[k  
public static void sort(int[] data, int algorithm) { Uo<d]4p $  
impl[algorithm-1].sort(data); +glT5sOk  
} [&y{z-D>  
me#VCkr#  
public static interface Sort { KZ pqbI Z  
public void sort(int[] data); Uoh!1_oV  
} kb ]PW Oz  
`[w:l[i  
public static void swap(int[] data, int i, int j) { A$Mmnu%  
int temp = data; N)03{$WM  
data = data[j]; $uF} GP_)  
data[j] = temp; >Q#_<IcI  
} lzN\~5a}  
} AF>J8V  
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