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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。 u*i[A\Y  
插入排序: p^ojhrr  
5u3SP?.&  
package org.rut.util.algorithm.support; ( [m[<  
{&Es3+{A  
import org.rut.util.algorithm.SortUtil; lf%Ju$H   
/** <fm0B3i?  
* @author treeroot >[|Y$$  
* @since 2006-2-2 :ncR7:Z  
* @version 1.0 ;]+p>p-#  
*/ 8F*"z^vD=  
public class InsertSort implements SortUtil.Sort{ K$(LiP  
&XE eJ  
/* (non-Javadoc) fPLi8`r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZyQ+}rO  
*/ xIh,UW#  
public void sort(int[] data) { rxVJB3P9  
int temp; K!a4>Du{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4RYvI!  
} ;$= GrR  
} G8E=E<Yg~  
} ek3,ss3  
Lj(y>{y  
} '5BM*4,:O  
h-`*S&mZ  
冒泡排序: $NG|z0  
!W ,pjW%Y  
package org.rut.util.algorithm.support; uY~xHV_-  
,\cO>y@  
import org.rut.util.algorithm.SortUtil; L% cr `<~  
4$=ATa;x-  
/** t/HUG#W{  
* @author treeroot |f.R]+cH  
* @since 2006-2-2 yA#-}Y|]b  
* @version 1.0 QTNE.n<?  
*/ 7Odw{pc  
public class BubbleSort implements SortUtil.Sort{ ^s=p'&6  
(2vf <x  
/* (non-Javadoc) H#+?)<UQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c 8 xZT  
*/ 9WH  
public void sort(int[] data) { 'Oe}Ja  
int temp; LBkAi(0rd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ d^Jf(NE0Yo  
if(data[j] SortUtil.swap(data,j,j-1); "7T9d)  
} kroO~(\  
} iA[WDB\|0  
} Ef2#}%>  
} o/U"'FP  
~YX!49XfHh  
} ^8#;>+7R  
D\ H) uV`  
选择排序: a &89K  
&74*CO9B9  
package org.rut.util.algorithm.support; qU) pBA  
Q ]u*Oels  
import org.rut.util.algorithm.SortUtil; i1kTP9  
0R0j7\{  
/** v'QmuMWF  
* @author treeroot JTxHM?/G  
* @since 2006-2-2 N){/#3  
* @version 1.0 bz=B&YR  
*/ 8+irul{H_  
public class SelectionSort implements SortUtil.Sort { = +=k(*  
vV?=r5j  
/* #q5 L4uM9  
* (non-Javadoc) @zHTKi`  
* ?+WSYg0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BP7&w d  
*/ y,`SLgBID  
public void sort(int[] data) { 3]iBX`Ni  
int temp; !PFc)J  
for (int i = 0; i < data.length; i++) { Ao:<aX,=  
int lowIndex = i; JlF$|y,gV,  
for (int j = data.length - 1; j > i; j--) { VZ:L K  
if (data[j] < data[lowIndex]) { %z_PEqRj  
lowIndex = j; fs=W(~"  
} :]viLw\&g  
} j(;o   
SortUtil.swap(data,i,lowIndex); _qPd)V6yb  
} ^j1WF[GiSO  
} lR9~LNK?  
m'Thm{Y,?n  
} gUcG#  
9? #pqw  
Shell排序: jo-qP4w  
c-2##Pf_8O  
package org.rut.util.algorithm.support; K`25G_Y3@  
X R =^zp?  
import org.rut.util.algorithm.SortUtil; yE\dv)(<  
>c~ Fg s  
/** lAM"l)Ij  
* @author treeroot YMSA[hm  
* @since 2006-2-2 wd/"! A4(  
* @version 1.0 5GP,J,J  
*/ h zh%ML3L  
public class ShellSort implements SortUtil.Sort{ %:P&! F\?  
d4h, +OU  
/* (non-Javadoc) t&r-;sH^[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zuR F6?un  
*/ L)sCc0fv7k  
public void sort(int[] data) { B@Ae2_;  
for(int i=data.length/2;i>2;i/=2){ 3+%c*}KC~  
for(int j=0;j insertSort(data,j,i); "2}E ARa  
} #^>5,M2  
} Vko1{$}t  
insertSort(data,0,1); W* XG9  
} !]W}I  
Ier0F7]I  
/** ,DHiM-v  
* @param data 4;*o}E  
* @param j k_2W*2'S  
* @param i FK$?8Jp  
*/ &s|&cT  
private void insertSort(int[] data, int start, int inc) { .[ Z<r>  
int temp; Felu`@b  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9Okb)K95  
} QzwA*\G  
} ~olta\|  
} <V}^c/c!  
s4$Z.xwr  
} BJM_kKH  
oM=Ltxv}  
快速排序: xJvM l`2;  
2VNMz[W'  
package org.rut.util.algorithm.support; v$O%U[e<  
\` |*i$  
import org.rut.util.algorithm.SortUtil; *}t,:N;i  
DL^}?Ve  
/** 6o_t;cpT  
* @author treeroot ]"3(UKx  
* @since 2006-2-2 @bN`+DC!<  
* @version 1.0 H$ !78/f  
*/ vKzq7E  
public class QuickSort implements SortUtil.Sort{ .}}w@NO  
FM c9oyU~  
/* (non-Javadoc) 50:$km\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -!dL <  
*/ a!1\,.  
public void sort(int[] data) { 7PDz ]i  
quickSort(data,0,data.length-1); OZ*V7o  
} B u ~N)^  
private void quickSort(int[] data,int i,int j){ IT3xX=|b  
int pivotIndex=(i+j)/2; 0 ttM_]#q  
file://swap "Q:m0P xb  
SortUtil.swap(data,pivotIndex,j); vGK'U*gGD  
`YDe<@6'  
int k=partition(data,i-1,j,data[j]); (z}q6Lfa  
SortUtil.swap(data,k,j); ~*|0yPFg  
if((k-i)>1) quickSort(data,i,k-1); 26Y Y1T\B)  
if((j-k)>1) quickSort(data,k+1,j); `&.]>H)N*  
vwZrvjP2  
} -?A,N,nnX  
/** 2d,q?VH$  
* @param data je^!W?U4<  
* @param i k{/2vV[`]  
* @param j {xm^DT  
* @return +gG6(7&+=  
*/ V@0Z\&  
private int partition(int[] data, int l, int r,int pivot) { $J>J@4  
do{ n\Z& sc  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F[Dhj,C"  
SortUtil.swap(data,l,r); k!gft'iU  
} ,[To)x5o  
while(l SortUtil.swap(data,l,r); Z:l.{3J$  
return l; \}0J%F1  
} L{K:XiPn  
{2`:7U ~|  
} ('/5#^%R  
Fm@G@W7,m  
改进后的快速排序: -saisH6  
sv<U$M~)X  
package org.rut.util.algorithm.support; yq{k:)  
QGtKu:c.81  
import org.rut.util.algorithm.SortUtil; l@ +]XyLj  
\vBpH'hR,'  
/** tL?nO#Qx  
* @author treeroot #x"dWi (  
* @since 2006-2-2 6m_whGosi  
* @version 1.0 %&L]k>n^  
*/ VU1 ;ZJ E  
public class ImprovedQuickSort implements SortUtil.Sort {  g?qh  
wl1JKiodg  
private static int MAX_STACK_SIZE=4096; bgW=.s  
private static int THRESHOLD=10; K)|#FRPM u  
/* (non-Javadoc) 6{rH|Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fqaysy  
*/ 5>J{JW|  
public void sort(int[] data) { s6k,'`.  
int[] stack=new int[MAX_STACK_SIZE]; 6~Y-bn"%D5  
"(uEcS2<  
int top=-1; hjB G`S#  
int pivot; 4}:a"1P"  
int pivotIndex,l,r; o#X|4bES  
_ri1RK,  
stack[++top]=0; Is~bA_- ;  
stack[++top]=data.length-1; F&r+"O)^-R  
t'@1FA!)  
while(top>0){ {'W\~GnZ  
int j=stack[top--]; *@J  
int i=stack[top--]; <(Ub(  
mmrx*sr=  
pivotIndex=(i+j)/2; =W1`FbR  
pivot=data[pivotIndex]; 3lc'(ts %  
gn&jNuGg  
SortUtil.swap(data,pivotIndex,j); ]| oh1q  
[TiOh'  
file://partition 5gP#V K  
l=i-1; `nA_WS  
r=j; U88-K1G  
do{ YYDLFt r2  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >|jSd2_p  
SortUtil.swap(data,l,r); v~>^c1:  
} =F2e*?a3  
while(l SortUtil.swap(data,l,r); FL 5u68  
SortUtil.swap(data,l,j); -Dw qoWZ  
vpOn0([hS  
if((l-i)>THRESHOLD){ IxwOzpr  
stack[++top]=i; \>NjeMuWU  
stack[++top]=l-1; "x&hBJ  
} )--v> *,V  
if((j-l)>THRESHOLD){ ag*RQ  
stack[++top]=l+1; 8fzmCRFH  
stack[++top]=j; >Z k$q~'+  
} Km2ppGLNn  
pEIc ?i*  
} rf"%D<bb  
file://new InsertSort().sort(data); unqX<6hu  
insertSort(data); uX*H2"A  
} %\?2W8Qv_J  
/** eiB5 8b3  
* @param data ,?;q$Xoi  
*/ riqvv1Nce  
private void insertSort(int[] data) { O/M\Q  
int temp; 8=x{>&Jr&#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D T^3K5  
} yyJ4r}TE  
} _K{hq<g  
} N%{&%C6{  
SGn:f>N  
} JF]HkH_u  
L*tn>AO  
归并排序: YC\~PVG  
X$w ,zb\  
package org.rut.util.algorithm.support; <7TE[M'  
5KJN](x+  
import org.rut.util.algorithm.SortUtil; Rt{qbM|b&  
yu~~"Rq)  
/** W!g'*L/#L  
* @author treeroot [nBlHI;&  
* @since 2006-2-2 mT\!LpX  
* @version 1.0 GuMsw*{>  
*/ k WYjqv  
public class MergeSort implements SortUtil.Sort{ 2`,{IHu*!  
0IoS|P}6a  
/* (non-Javadoc) 6P;JF%{J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N<ww&GXBX  
*/ _@0>y MZ^  
public void sort(int[] data) { e"^* ~'mJ  
int[] temp=new int[data.length]; VJ P]Jy_  
mergeSort(data,temp,0,data.length-1); jJ-j   
} b@@`2O3"  
 Z+ [Nco  
private void mergeSort(int[] data,int[] temp,int l,int r){ SlvQ)jw%  
int mid=(l+r)/2; EeWCy5W  
if(l==r) return ; u= ( kii=/  
mergeSort(data,temp,l,mid); 6bCC6G  
mergeSort(data,temp,mid+1,r); +^hFs7je)  
for(int i=l;i<=r;i++){ #LEK?]y  
temp=data; M H }4F  
} eS9/- Y  
int i1=l; HErTFY+vC  
int i2=mid+1; 2bU 3*m^M  
for(int cur=l;cur<=r;cur++){ %^}3:0G  
if(i1==mid+1) <N^2|*3  
data[cur]=temp[i2++]; ipfiarT~)  
else if(i2>r) \:C@L&3[  
data[cur]=temp[i1++]; iF2/:iP  
else if(temp[i1] data[cur]=temp[i1++]; y8jk9Tv  
else Ro`Hm8o/  
data[cur]=temp[i2++]; vsg"!y@v  
} 4;8 Z?.  
} C#X|U2$  
=if5$jE3  
} OL&ku &J_  
L2Uk/E  
改进后的归并排序: TGu`r>N51  
W@jBX{k  
package org.rut.util.algorithm.support; zZDa7 1>  
<T JUKznO  
import org.rut.util.algorithm.SortUtil; \M1-  
aB~?Y+m  
/** ;,n{6`  
* @author treeroot H `Fe |6I&  
* @since 2006-2-2 9r% O  
* @version 1.0 Ak[}s|,)  
*/ =rcqYPul0  
public class ImprovedMergeSort implements SortUtil.Sort { O#fGHI<43[  
X2!vC!4P?L  
private static final int THRESHOLD = 10; 5F$ elW  
\gy39xoW(  
/* pA9^-:\*  
* (non-Javadoc) io^^f|  
* Ul7)CT2:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7a 4G:  
*/ Kf D8S  
public void sort(int[] data) { hkeOe  
int[] temp=new int[data.length]; JX@/rXFY}  
mergeSort(data,temp,0,data.length-1); TG'_1m*$  
} ^B~z .F i  
dM8`!~#&PI  
private void mergeSort(int[] data, int[] temp, int l, int r) { a=\r~Z7E  
int i, j, k; OF*m 9  
int mid = (l + r) / 2; 7HzO_u%H1  
if (l == r) Qp~O!9ph  
return; 5Og.:4  
if ((mid - l) >= THRESHOLD) ,Hn{nVU1R=  
mergeSort(data, temp, l, mid); OF'y]W&  
else V~` ?J6  
insertSort(data, l, mid - l + 1); XfmPq'#Z  
if ((r - mid) > THRESHOLD) }-9  
mergeSort(data, temp, mid + 1, r); BXy g ?  
else Fu:VRul=5$  
insertSort(data, mid + 1, r - mid); j u`x   
x;2tmof=L  
for (i = l; i <= mid; i++) { i/`N~r   
temp = data; ntE;*F yH  
} TyVn5XHl^  
for (j = 1; j <= r - mid; j++) { pq$`T|6^  
temp[r - j + 1] = data[j + mid]; vK z/-9im  
} mnswG vY  
int a = temp[l]; ,cD(s(6+  
int b = temp[r]; > f,G3Ay  
for (i = l, j = r, k = l; k <= r; k++) { =m6;]16D  
if (a < b) { H'Q4IRT  
data[k] = temp[i++]; 5%j !SVW  
a = temp; `)$'1,]u  
} else { G4][`C]8c  
data[k] = temp[j--]; 5]DgfwX  
b = temp[j]; #@Yw]@5M  
} uH S)  
} B B*]" gT  
} wB~Ag$~  
Z}6   
/** !=M[u+-  
* @param data :4|ubu  
* @param l Lgl%fO/<t  
* @param i S,,,D+4  
*/ [=imF^=3Vb  
private void insertSort(int[] data, int start, int len) { c.y8x  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]wCg'EUB  
} f]N2(eM  
} l1XA9>n  
} 3(l^{YC+[7  
} d[(KgX9  
zX{K\yp  
堆排序: *T0{ yI  
57*`y'C W  
package org.rut.util.algorithm.support; O+hN?/>v  
^Rriu $\  
import org.rut.util.algorithm.SortUtil; H7!j5^  
A7,TM&  
/** R,?7|x  
* @author treeroot U 1!6%x  
* @since 2006-2-2 s 8O"U%  
* @version 1.0 ^F/gJ3_;  
*/ 4sOo>.<x  
public class HeapSort implements SortUtil.Sort{ <]#'6'  
7jP C{W  
/* (non-Javadoc)  >sk vg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |c,,*^  
*/ X,dOF=OJL  
public void sort(int[] data) { iX,| ;J|]  
MaxHeap h=new MaxHeap(); v.Wkz9 w}  
h.init(data); seO7/h_a  
for(int i=0;i h.remove(); GqB]^snh  
System.arraycopy(h.queue,1,data,0,data.length); V4kt&61  
} AdV&w: ^yf  
H<bYm]a%  
private static class MaxHeap{ Kv3cKNvu~  
@X\-c2=  
void init(int[] data){ SJ4[n.tPI  
this.queue=new int[data.length+1]; Q@zD'G >  
for(int i=0;i queue[++size]=data; ha_&U@w  
fixUp(size); _qwKFC  
} X}Heaqn  
} hJ[Z~PC\T0  
!Wn^B|  
private int size=0; G}ZJ}5h  
;Gf,$dbWn  
private int[] queue; 3Q'Q %2  
v%8.o%G  
public int get() { Bg.~#H  
return queue[1]; &|cg`m  
} VnqgN  
k$j4~C'$  
public void remove() { Kxs_R#k  
SortUtil.swap(queue,1,size--); >6xZF'4  
fixDown(1); >drG,v0qh  
} CHxu%- g  
file://fixdown ! *Snx  
private void fixDown(int k) {  vV5dW  
int j; #w_cos[I  
while ((j = k << 1) <= size) { 7mG/f  
if (j < size %26amp;%26amp; queue[j] j++; 36ygI0V_  
if (queue[k]>queue[j]) file://不用交换 Q7uhz5oZ  
break; V}c3}'_U]  
SortUtil.swap(queue,j,k); d~#>.$Uu  
k = j; $J]VY;C!  
} DbDi n  
} \C<|yD  
private void fixUp(int k) { T\Zf`.mt  
while (k > 1) { |^: A,%>  
int j = k >> 1; $,Q0ay  
if (queue[j]>queue[k]) R'M=`33M  
break; Y|%s =0M  
SortUtil.swap(queue,j,k); 3.[ fTrzJ  
k = j; J0xV\O !e  
} )?es3Ehqq  
} /Z':wu\  
vRp#bScc  
} xw[KP [(  
1>5l(zK!9  
} 1< 22,  
IY$v%%2WZ  
SortUtil: C%#%_ "N  
:x85:pa  
package org.rut.util.algorithm; `[.b>ztqgJ  
%ae|4u#b  
import org.rut.util.algorithm.support.BubbleSort; l;+nL[%`  
import org.rut.util.algorithm.support.HeapSort; M1UabqQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; b8Bf,&:ys  
import org.rut.util.algorithm.support.ImprovedQuickSort; QYl Pr&O9  
import org.rut.util.algorithm.support.InsertSort; 2VB|a;Mo  
import org.rut.util.algorithm.support.MergeSort; ^g^R[8  
import org.rut.util.algorithm.support.QuickSort; "gaurr3  
import org.rut.util.algorithm.support.SelectionSort; $hND!T+;  
import org.rut.util.algorithm.support.ShellSort; 'IVNqfC)u  
u`K)dH,  
/** q.xt%`@aA  
* @author treeroot ~8fy qE$  
* @since 2006-2-2 ] yg3|C;  
* @version 1.0 &A}@@d  
*/ 2L\}  
public class SortUtil { Nu}x`Qkmr  
public final static int INSERT = 1; G3[X.%g`  
public final static int BUBBLE = 2; v@_^h}h/,=  
public final static int SELECTION = 3; |AgdD  
public final static int SHELL = 4; j%_{tB  
public final static int QUICK = 5; ?%)G%2  
public final static int IMPROVED_QUICK = 6; ;^fGQ]`4  
public final static int MERGE = 7; `;X~$uS  
public final static int IMPROVED_MERGE = 8; _SVIY@K|/  
public final static int HEAP = 9; O $ p  
'aj97b;lpG  
public static void sort(int[] data) { cOhx  
sort(data, IMPROVED_QUICK); ,drbj.0-  
} g4p-$WyT8>  
private static String[] name={ }02#[vg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" nw.,`M,N  
}; I%4)%  
g3fxf(iY(  
private static Sort[] impl=new Sort[]{ no~Yet+<"  
new InsertSort(), 6A$  Y]u  
new BubbleSort(), jFE1k(2e  
new SelectionSort(), )uG7 DR  
new ShellSort(), y~16o   
new QuickSort(), ;_bZH%o.  
new ImprovedQuickSort(), O{P@fv%~(o  
new MergeSort(), `B1r+uTP~  
new ImprovedMergeSort(), |"gg2p  
new HeapSort() 1u9*)w  
}; gfr y5e  
7IEG%FY T  
public static String toString(int algorithm){ A(j9T,!  
return name[algorithm-1]; oR``Jiob|  
} _lK+/"-l  
,RA;X  
public static void sort(int[] data, int algorithm) { jUtFDw  
impl[algorithm-1].sort(data); VXfp=JE  
} G6*P]<  
-a^%9 U  
public static interface Sort { pUp&eH  
public void sort(int[] data); "W"2 Y(  
} #L3heb&9  
F\K&$5J{p  
public static void swap(int[] data, int i, int j) { t@_MWF  
int temp = data; W##~gqZ/  
data = data[j]; U3oMY{{E J  
data[j] = temp; )(4.7>  
} E((U=P}+g  
} goJK~d8M*  
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