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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。 eI"pRH*f  
插入排序: "f 89   
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package org.rut.util.algorithm.support; s<"|'~<n  
'm`}XGUBS  
import org.rut.util.algorithm.SortUtil; PX/Y?DP  
/** ?o.d FKUe  
* @author treeroot 5qH*"i+|s  
* @since 2006-2-2 ),vDn}>  
* @version 1.0 Wcc4/:`Hu  
*/ hDTC~~J/  
public class InsertSort implements SortUtil.Sort{ ~C^:SND7  
Ph]b6  
/* (non-Javadoc) Bk3\NPa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p~3 x=X4  
*/ 9tv,,I;iU  
public void sort(int[] data) { /d}"s.3p  
int temp; MG=8`J-`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %w[Z/  
} :8eI_X  
} 9s_^?q  
} Cp/f18zO  
q\?p' i  
} n"RV!{&  
G3:!]}  
冒泡排序: izcaWt3 a  
=K0%bI  
package org.rut.util.algorithm.support; .Ja].hP  
UA*VqK)Y  
import org.rut.util.algorithm.SortUtil; mj$Ucql  
Z6${nUX  
/** XfE9QA[  
* @author treeroot hT1JEu  
* @since 2006-2-2 P~{8L.w!>W  
* @version 1.0 .,z6a  
*/ 1UJrPM%  
public class BubbleSort implements SortUtil.Sort{ -->0e{y  
B%uY/Mwz$  
/* (non-Javadoc) /a^ R$RHl'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =3(Auchl$Y  
*/ \X&8EW  
public void sort(int[] data) { xrvM}Il  
int temp; m=l'9j"D  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ciODTq?  
if(data[j] SortUtil.swap(data,j,j-1); ;x\oY6:  
} 9}9VZ r?  
} M{5AQzvs  
} V($V8P/  
} uEJ8Lmi  
seEo)m`d  
}  iiQn/%  
<7Pp98si,u  
选择排序: J?3/L&seA  
X8ap   
package org.rut.util.algorithm.support; JXJ+lZmsz  
HQm_ K0$  
import org.rut.util.algorithm.SortUtil; SdYf^@%}F  
0pMN@Cz6  
/** TC/c5:)]  
* @author treeroot Oh$:qu7o0&  
* @since 2006-2-2 c$ZV vu  
* @version 1.0 .c-a$39  
*/ ?yS1|CF%&y  
public class SelectionSort implements SortUtil.Sort { cp(qaa  
b`-|7<s  
/* 2.z-&lFBZ  
* (non-Javadoc) 1]G)41  
* =p'+kS+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RN(I}]]a  
*/ aq$ hE-{28  
public void sort(int[] data) { Gf\h7)T\  
int temp; @M"gEeI9  
for (int i = 0; i < data.length; i++) { nFn!6,>E  
int lowIndex = i; nU_O|l9  
for (int j = data.length - 1; j > i; j--) { %BGg?&  
if (data[j] < data[lowIndex]) { y,nmPX?]n  
lowIndex = j; GHGyeqNM  
} z/{X{+Z  
} {o24A: M  
SortUtil.swap(data,i,lowIndex); jCJcVO>OZ  
} _h!.gZB3  
} mtv8Bm=<  
} jj)  
} uMg\s\Z  
\2s`mCY  
Shell排序: bGWfMu=n  
tON>wmN  
package org.rut.util.algorithm.support; 0y9 b0G  
<:&vAX L  
import org.rut.util.algorithm.SortUtil; g5B TZZ  
rz"$zc.)  
/** qG6s.TcG  
* @author treeroot iT-coI  
* @since 2006-2-2 `} PYltW  
* @version 1.0 E]`7_dG+T  
*/ W*C~Xba<  
public class ShellSort implements SortUtil.Sort{ h+ [6i{  
|ri)-Bk ,  
/* (non-Javadoc) @oAz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /d3Jd .l!  
*/ q\6(_U#Tl  
public void sort(int[] data) { D!&(#Vl _  
for(int i=data.length/2;i>2;i/=2){ .Fn|Okn^gr  
for(int j=0;j insertSort(data,j,i); A;TP~xq\  
} )Z/"P\qo  
} &P?2H66s  
insertSort(data,0,1); NHGTV$T`1  
} vQEV,d1  
/}?7Eni  
/** !ZBtXt#P  
* @param data j!u)V1,  
* @param j 9"P|Csj  
* @param i ,'X"(tpu@  
*/ e,U:H~+]  
private void insertSort(int[] data, int start, int inc) { ote,`h  
int temp; ! xCo{U=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $m4-^=  
} \/NF??k,jk  
} ":Dm/g  
} \fA{sehdL  
C ^Y\?2h1  
} V%s g+D2  
gF)9a_R%p  
快速排序: HxG8 'G  
ffrIi',@  
package org.rut.util.algorithm.support; XIW0Z C   
}E 'r?N  
import org.rut.util.algorithm.SortUtil; #4^d#Gj  
UnhVppnex  
/** X,QsE{  
* @author treeroot A]z*#+Sl  
* @since 2006-2-2 NQ9v[gv  
* @version 1.0 "`vRHeCKN  
*/ [^5\Ww  
public class QuickSort implements SortUtil.Sort{ 4%(Ji  
$T'!??|IF  
/* (non-Javadoc) f O*jCl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wq1>Bj$J8  
*/ NX @FUct;  
public void sort(int[] data) { @+u>rS|IB  
quickSort(data,0,data.length-1); F-yY(b]$  
} D|;O9iks#  
private void quickSort(int[] data,int i,int j){ aB]0?C y9(  
int pivotIndex=(i+j)/2; P6:C/B  
file://swap >Fel) a  
SortUtil.swap(data,pivotIndex,j); /(N/DMl[  
,erw(7}'.  
int k=partition(data,i-1,j,data[j]); )Z}AhX  
SortUtil.swap(data,k,j); [,zq  
if((k-i)>1) quickSort(data,i,k-1); !|cg=  
if((j-k)>1) quickSort(data,k+1,j); + ?1GscJ   
c`a(  
} YDt+1Kw}D  
/** ]\$/:f-2  
* @param data LFp "Waiv  
* @param i r~4uIUE{  
* @param j MY&Jdmga  
* @return wVf~FssN  
*/  <wH+\  
private int partition(int[] data, int l, int r,int pivot) { sibYJKOy  
do{ \/A.j|by,>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); pfA6?tP`  
SortUtil.swap(data,l,r); dAo;y.3  
} P]_d;\ !"v  
while(l SortUtil.swap(data,l,r); "}4%vZz  
return l; \@LTXH.  
} wX$:NOO  
@-N` W9  
} &d#R'Z  
2-&EkF4p'  
改进后的快速排序: je4l3Hl  
,"(L2+Yp  
package org.rut.util.algorithm.support; [K!9xM6  
'M90Yia  
import org.rut.util.algorithm.SortUtil; +6m.f,14q  
bz>X~   
/** em$pU*`P  
* @author treeroot O] _4pP  
* @since 2006-2-2 M`xiC  
* @version 1.0 g?C;b>4  
*/ ny={OhP-  
public class ImprovedQuickSort implements SortUtil.Sort { r~w.J+W  
wT1s;2%  
private static int MAX_STACK_SIZE=4096; k ;WD[SV  
private static int THRESHOLD=10; jN=<d q ~  
/* (non-Javadoc) R%E7 |NAG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U, 6iT  
*/ 2iAC_"n  
public void sort(int[] data) { I`>U#x*  
int[] stack=new int[MAX_STACK_SIZE]; 5=dL`  
3r\8v`^>  
int top=-1; vdQoJWuB  
int pivot; Mf}M/Fh  
int pivotIndex,l,r; Uv^\[   
0}{xH  
stack[++top]=0; K%(y<%Xp  
stack[++top]=data.length-1; ==[,;g x  
!<bwg  
while(top>0){ tF2"IP.  
int j=stack[top--]; k3\N.@\  
int i=stack[top--]; 5xY{Q  
K %^n.  
pivotIndex=(i+j)/2; <v"o+  
pivot=data[pivotIndex]; B.z$0=b  
4<s.|W`  
SortUtil.swap(data,pivotIndex,j); 9KSi-2?H  
"4j~2{{ F  
file://partition WJ7|0qb  
l=i-1; Bd>~F7VWs  
r=j; Xtp8 ^4Va  
do{ "LyD  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }d$-:l ,w  
SortUtil.swap(data,l,r);  EM ,C  
} Tc2.ciU  
while(l SortUtil.swap(data,l,r); 7#8Gn=g  
SortUtil.swap(data,l,j); UHBXq;?&q  
q5'S<qY^  
if((l-i)>THRESHOLD){ yNu_>!Cp5  
stack[++top]=i; }xZi Ct  
stack[++top]=l-1; S0$^|/Sr  
} [P$Xr6#  
if((j-l)>THRESHOLD){ =:W2NN'  
stack[++top]=l+1; DA=!AK>  
stack[++top]=j; |rmelQ-  
} xn8K OwX%  
M  .#}  
} ~zp8%lEe  
file://new InsertSort().sort(data); 3;nOm =I  
insertSort(data); Z%T Ajm  
} 9+.wj/75  
/** *4,Q9K_  
* @param data Uj@th  
*/ A|A~$v("R  
private void insertSort(int[] data) { /-=fWtA  
int temp; {>&~kM@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); De$AJl  
} ~ELY$G.xl  
} MDMd$] CW  
} '3.\+^3  
X -pbSq~5  
} %1z;l.c  
j50vPV8m  
归并排序: dj gk7  
 56.!L  
package org.rut.util.algorithm.support; r924!zdbR  
=C\Tl-$\f  
import org.rut.util.algorithm.SortUtil; h$S#fY8   
OvfluFu7  
/** ^BsT>VSH6  
* @author treeroot G5ATR<0m  
* @since 2006-2-2 vEv kC  
* @version 1.0 =j7Du[?Vu  
*/  Spm 0`  
public class MergeSort implements SortUtil.Sort{ /\J0)V  
3o.x<G(  
/* (non-Javadoc) yR[6s#F/h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .qBc;u  
*/ !pU$'1D  
public void sort(int[] data) { dwj?;  
int[] temp=new int[data.length];  *7m lH  
mergeSort(data,temp,0,data.length-1); l{By]S  
} js$R^P  
E0HqXd?  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8PI%Z6  
int mid=(l+r)/2; ~id6^#&>  
if(l==r) return ; "ubp`7%67  
mergeSort(data,temp,l,mid); Ds1h18  
mergeSort(data,temp,mid+1,r); Z)!8a$M~  
for(int i=l;i<=r;i++){ CS^6$VL7e  
temp=data; *>fr'jj1$  
} /VR~E'Cy%  
int i1=l; An2 >]\L  
int i2=mid+1; {!,K[QwcI  
for(int cur=l;cur<=r;cur++){ VKa+[  
if(i1==mid+1) x}G:n[B7_V  
data[cur]=temp[i2++]; "t|)Kl  
else if(i2>r) F^,:p.ihm<  
data[cur]=temp[i1++]; g*k)ws  
else if(temp[i1] data[cur]=temp[i1++]; Tigw+2  
else zJQh~)  
data[cur]=temp[i2++]; ZL|aB886  
} Bdo{zv&A  
} eORXyh\K  
.?}M(mL  
} y)kxR  
6w.E Sm  
改进后的归并排序: $8^Hk xy  
8/e-?2l  
package org.rut.util.algorithm.support; :Cq73:1\B  
_^ hg7&dF  
import org.rut.util.algorithm.SortUtil; zB.cOMx  
I}f`iBG  
/** :{u`qi  
* @author treeroot qS?o22  
* @since 2006-2-2 >$ q   
* @version 1.0 7_~ A*LM  
*/ pcMzLMG<  
public class ImprovedMergeSort implements SortUtil.Sort { C qd\n#d/~  
D4%J!L<P  
private static final int THRESHOLD = 10; %=**cvVy  
\`Hp/D1  
/* c^}G=Z1@  
* (non-Javadoc) Ejug2q  
* (p]FI#y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "vGh/sXW  
*/ Q2 q~m8(  
public void sort(int[] data) { !Asncc G  
int[] temp=new int[data.length]; ]4aPn  
mergeSort(data,temp,0,data.length-1); gL<n?FG4b  
} 2A_1E \  
$dfc@Fn^x  
private void mergeSort(int[] data, int[] temp, int l, int r) { *p/,Z2f  
int i, j, k; O_QDjxj^rZ  
int mid = (l + r) / 2; o3 0C\  
if (l == r) Q68~D.V%r  
return; r1!1u7dr t  
if ((mid - l) >= THRESHOLD) yr\ClIU  
mergeSort(data, temp, l, mid); h<9vm[.  
else =O}I{dNKZV  
insertSort(data, l, mid - l + 1); ERPg TZT  
if ((r - mid) > THRESHOLD) j!+jLm!l  
mergeSort(data, temp, mid + 1, r); pRQ7rT',v  
else KL \>-  
insertSort(data, mid + 1, r - mid); ~5 6&!4  
=.`\V]  
for (i = l; i <= mid; i++) { Yxq!7J  
temp = data; t/ \S9  
} /2Izj/Q  
for (j = 1; j <= r - mid; j++) { +4yre^gC  
temp[r - j + 1] = data[j + mid]; v3"6'.f;bY  
} i l^;2`]&  
int a = temp[l]; IfmQP s+f  
int b = temp[r]; e!6yxL*[@[  
for (i = l, j = r, k = l; k <= r; k++) { ?]><#[?'L  
if (a < b) { /LFuf`bXV  
data[k] = temp[i++]; X>I3N?5  
a = temp; /&Q{B f  
} else { ;nSF\X(;{  
data[k] = temp[j--]; k4Q>J,k  
b = temp[j]; B*tYp  
} B:h<iU:'D  
} izP )t  
} I>?oVY6M@u  
(z sG!v  
/** mZ71_4X#  
* @param data ;6/WjUDw<|  
* @param l s)Y1%#  
* @param i J9lZ1,22  
*/ `cp\UH@  
private void insertSort(int[] data, int start, int len) { !E$$ FvL  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5L3+KkX@  
} 2E }vuw=c  
} .B]l@E-u  
} ||hQ*X<m>  
} gqS9{K(f  
"pkdZ   
堆排序: TuQGF$n@  
#@FA=p[%  
package org.rut.util.algorithm.support; i~h@}0WR"  
cWAw-E5  
import org.rut.util.algorithm.SortUtil; )$]lf }  
f<8Hvumw  
/** ZWkRoJXNi  
* @author treeroot Au,oX2$  
* @since 2006-2-2 ZV gfrvZP  
* @version 1.0 )- W1Wtom  
*/ %u!=<yn'  
public class HeapSort implements SortUtil.Sort{ G _cJI  
3}nk9S:jr  
/* (non-Javadoc) Ef]Hpjvp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uzdPA'u  
*/ :|;@FkQ  
public void sort(int[] data) { $z=%e#(!I  
MaxHeap h=new MaxHeap(); G(t:s5:  
h.init(data); krfXvQJwJ  
for(int i=0;i h.remove(); r *K  
System.arraycopy(h.queue,1,data,0,data.length); v@zi?D K  
} ! AwMD  
%jHm9{|X  
private static class MaxHeap{ `n$Ak5f  
s#Dj>Fej  
void init(int[] data){ r,;ca6>5H  
this.queue=new int[data.length+1]; `=Ip>7T&  
for(int i=0;i queue[++size]=data; IQJ"B6U)  
fixUp(size); j4IVIj@$ `  
} {JfQQP&FV  
} E`TZ:W]r,  
1gHe$ dzXk  
private int size=0; !R8%C!=a  
aEN` `  
private int[] queue; :9QU\{2  
qA[lL(  
public int get() { Ze V@ X  
return queue[1]; .\caRb[  
} jZ.yt+9  
ox&5} &\  
public void remove() { )M0`dy{1  
SortUtil.swap(queue,1,size--); [-\Y?3  
fixDown(1); SXw r$)4_  
} m4m-JD|v  
file://fixdown SrKitSG  
private void fixDown(int k) { J2qsZ  
int j; _9>,9aL  
while ((j = k << 1) <= size) { .,u>WIUxj  
if (j < size %26amp;%26amp; queue[j] j++; eDpi0htm  
if (queue[k]>queue[j]) file://不用交换 Wx0i_HFR  
break; ^(JrOh'  
SortUtil.swap(queue,j,k); Pk;w.)kT  
k = j; c+l1 l0BA  
} ;VLDXvGd  
} D|OGlP  
private void fixUp(int k) { CmB_g?K  
while (k > 1) { (}b~}X9  
int j = k >> 1; !` 1h *}  
if (queue[j]>queue[k]) I<2`wL=  
break; 7RT{RE  
SortUtil.swap(queue,j,k);  ]~;*9`:  
k = j; 3#t9pI4  
} |!(8c>]Bo  
} k1,k 9BK  
_\>y[e["p  
} yepRJ%mp  
>n,_Aj c  
} JA4Zg*7I  
+nR("Il  
SortUtil: [<=RsD_q~  
+c_AAMe  
package org.rut.util.algorithm; }tt%J[  
/D"T\KNWr  
import org.rut.util.algorithm.support.BubbleSort; E6GubU  
import org.rut.util.algorithm.support.HeapSort; u [qy1M0  
import org.rut.util.algorithm.support.ImprovedMergeSort; "22./vWV|i  
import org.rut.util.algorithm.support.ImprovedQuickSort; mH,s!6j?Vp  
import org.rut.util.algorithm.support.InsertSort; TzC(YWt  
import org.rut.util.algorithm.support.MergeSort; .Vt|;P}  
import org.rut.util.algorithm.support.QuickSort; &m5^ YN$b  
import org.rut.util.algorithm.support.SelectionSort; 2M+RA}dX  
import org.rut.util.algorithm.support.ShellSort; @ fMlbJq  
G5qsnTxUJ  
/** &3/`cl[+  
* @author treeroot s>;"bzzq  
* @since 2006-2-2 \zJ^XpC  
* @version 1.0 ^(&2  
*/ ANPG3^w  
public class SortUtil { F-@y H  
public final static int INSERT = 1; !}c D e12  
public final static int BUBBLE = 2; 8GxT!  
public final static int SELECTION = 3; ybJa:  
public final static int SHELL = 4; ]}SV%*{ %  
public final static int QUICK = 5; yHM2 9fEZk  
public final static int IMPROVED_QUICK = 6; hak#Iz0[C  
public final static int MERGE = 7; 0(&uH0x  
public final static int IMPROVED_MERGE = 8; p3fV w]N  
public final static int HEAP = 9; ,dba:D= l  
NZ`6iK-V_  
public static void sort(int[] data) { F@/syX;bb5  
sort(data, IMPROVED_QUICK); NHZMH!=4:n  
} lU|ltnU  
private static String[] name={ |QzJHP @  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" w 8o?wx*  
}; N+SA$wG  
.aZB?M W  
private static Sort[] impl=new Sort[]{ ^ &KH|qRrO  
new InsertSort(), Yp m*or  
new BubbleSort(), #O^zA`D   
new SelectionSort(), @W+8z#xr'  
new ShellSort(), p"\-iY]  
new QuickSort(), fR.raI4et  
new ImprovedQuickSort(), |RpZr!3V  
new MergeSort(), ?{Xp'D\z  
new ImprovedMergeSort(), zh !/24p9  
new HeapSort() FlS)m`  
}; oi3Ix7  
g 'L$m|  
public static String toString(int algorithm){ AF{o=@  
return name[algorithm-1]; :\#]uDT2=  
} w*SFQ_6YE  
kGq<Zmy|  
public static void sort(int[] data, int algorithm) { t[%=[pJHW  
impl[algorithm-1].sort(data); YS"76FJ  
} HV3wUEI3  
h^9Ne/s~  
public static interface Sort { 43J8PMY  
public void sort(int[] data); Sdmynuv U  
} ]*S_fme  
XeBSHvO_  
public static void swap(int[] data, int i, int j) { N_!Zn"J  
int temp = data; 9]8M {L  
data = data[j]; Q!%CU8!`&  
data[j] = temp; E{9{%J  
} cmh/a~vYaY  
} 6 ud<B  
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