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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。 Vbwbc5m}  
插入排序: K46mE   
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package org.rut.util.algorithm.support; B aXzz  
HVC\(h,)i  
import org.rut.util.algorithm.SortUtil; \TKv3N  
/** ncWASw`  
* @author treeroot 'dx4L }d  
* @since 2006-2-2 H\O|Y@uVr  
* @version 1.0 1XSqgr"3  
*/ V-jo2+Y5=  
public class InsertSort implements SortUtil.Sort{ p HWol!  
VB[R!S=  
/* (non-Javadoc) *{C)o0D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p<jHUG4?'  
*/ :}E*u^v K  
public void sort(int[] data) { QJ$]~)w?H  
int temp; _/KW5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vK6bpzI 3  
} 6z/8n f +u  
} (US8Sc  
} ntjUnd&v\  
+[cm  
}  R,y8~D  
SBYRN##n_  
冒泡排序: .fZv H  
bi,%QZZ  
package org.rut.util.algorithm.support; uH]^/'8vBd  
Y}4dW'  
import org.rut.util.algorithm.SortUtil; |R+=Yk&u  
F9d][ P@@  
/** IQH;`+  
* @author treeroot fA|'}(kH  
* @since 2006-2-2 ^P]: etld9  
* @version 1.0 EK#w: "  
*/ FL`. (,  
public class BubbleSort implements SortUtil.Sort{ Q(%uDUg%  
;E*ozKpm  
/* (non-Javadoc) J,E&Uz95%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2!jbaSH(+  
*/ U:`rNHl  
public void sort(int[] data) { | WDX@Q  
int temp; #8[,w.X  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^%\p; yhL  
if(data[j] SortUtil.swap(data,j,j-1); RI%* 5lM8;  
}  *A_  
} A@`C<O ^  
} L*FnFRhU  
} d *H-l3N  
{VI%]n{M  
} 5Lue.U%a  
y_J{+  
选择排序: TN l$P~X>  
tl#hCy  
package org.rut.util.algorithm.support; Ju:=-5r"'  
dAga(<K  
import org.rut.util.algorithm.SortUtil; 89WuxCFS  
jkfI,T  
/** 2wu 5`Z[E  
* @author treeroot m V^dIm  
* @since 2006-2-2 n)pBK>+  
* @version 1.0 0{Tf;a<  
*/ CMTy(Z8_)  
public class SelectionSort implements SortUtil.Sort { |rNm_L2  
L5U>`lx6$  
/* HI:E&20y  
* (non-Javadoc) b"x:IDW qG  
* ujwI4oj"c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a z`5{hK  
*/ 15SIZ:Q  
public void sort(int[] data) { CIV6 Qe"<  
int temp; \2~.r/`1  
for (int i = 0; i < data.length; i++) { 's*UU:R  
int lowIndex = i; DNL TJrN  
for (int j = data.length - 1; j > i; j--) { _&yQW&vH#  
if (data[j] < data[lowIndex]) { QAu^]1;  
lowIndex = j; D:){T>  
} HLk/C[`u,  
} #Xsby  
SortUtil.swap(data,i,lowIndex); dU+1@_  
} ,(lD5iN  
} bXtA4O  
K)^.96{/@  
} H#6J7\xcS  
fDqlN`P@  
Shell排序: smk0*m4  
qo'pU/@  
package org.rut.util.algorithm.support; 23Eg|Xk  
>O~xu^N?  
import org.rut.util.algorithm.SortUtil; :<nL9y jt  
:@Q_oyWE8  
/** d[ {=/~0  
* @author treeroot 1no$|n#  
* @since 2006-2-2 nar=\cs~g  
* @version 1.0 =. OW sFv  
*/ *r(iegO$  
public class ShellSort implements SortUtil.Sort{ $KtMv +m"  
M8 ++JI  
/* (non-Javadoc) F2+lwycY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NH|v`rO  
*/ g%^Zq"  
public void sort(int[] data) { h~<#1'/<  
for(int i=data.length/2;i>2;i/=2){ # U!J2240  
for(int j=0;j insertSort(data,j,i); ~lQ]PKJ"  
} ]\Ez{MdAT  
} BhNwC[G?m  
insertSort(data,0,1); LG51e7_gFi  
} hWuq  
k%c ?$n"  
/** sp AYb<  
* @param data c*LnLK/m  
* @param j [?;oiEe.|  
* @param i =(zk-J<nY  
*/ `(16_a  
private void insertSort(int[] data, int start, int inc) { G.c s-f  
int temp; 3DgI.V6un  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N[=nh)m7b  
} 6I 2`m(5  
} k%uRG_  
} #bf^Pq'8  
=(v/pLLK?  
} a!wPBJJ  
sd>#Hn  
快速排序: Ik~5j(^E-  
J2yq|n?2gq  
package org.rut.util.algorithm.support; ?ILNp`k  
a'Aru^el  
import org.rut.util.algorithm.SortUtil; \$9S_z  
V8&%fxn+  
/** s2&UeYbIs  
* @author treeroot arDY@o~  
* @since 2006-2-2 <o p !dS  
* @version 1.0 o1YhYA  
*/ /n(0nU[  
public class QuickSort implements SortUtil.Sort{ l1!i3m'x  
7dxY07 yu  
/* (non-Javadoc) Br-bUoua  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J]$%1Y  
*/ hLO nX<%a  
public void sort(int[] data) { ]_5C5m  
quickSort(data,0,data.length-1); |h8C}P&Z  
} m|e!1_ :H  
private void quickSort(int[] data,int i,int j){ D*_ F@}=  
int pivotIndex=(i+j)/2; E&]S No<  
file://swap :90DS_4  
SortUtil.swap(data,pivotIndex,j); =]"[?a >  
*:)#'cenI  
int k=partition(data,i-1,j,data[j]); sE]eIN  
SortUtil.swap(data,k,j); `5h$@  
if((k-i)>1) quickSort(data,i,k-1); c1b@3  
if((j-k)>1) quickSort(data,k+1,j); qC IZW  
OB5(4TY  
} LvE|K&R|  
/** )]rGGNF*  
* @param data FVL0K(V(  
* @param i "xYMv"X  
* @param j {}vW=  
* @return lD\lFN(:  
*/ #& R x(  
private int partition(int[] data, int l, int r,int pivot) { rHN>fySn7  
do{ Hk$|.TjzI  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RrGS$<  
SortUtil.swap(data,l,r); t+p-,ey^@  
} 0d.lF:  
while(l SortUtil.swap(data,l,r); Cl i k  
return l; c]&(h L  
} &V iIxJZ1$  
b- %7@j  
} J:p nmZ`X  
>P+V!-%#  
改进后的快速排序: x7t"@Gz  
oa47TqFt  
package org.rut.util.algorithm.support; Hya*7l']B  
'U5 E{  
import org.rut.util.algorithm.SortUtil; Hm1C|Qb  
d$b{KyUA  
/** '}LH,H:%G  
* @author treeroot (w4#?_  
* @since 2006-2-2 F0]= z-  
* @version 1.0 E70  
*/ ]';!r20  
public class ImprovedQuickSort implements SortUtil.Sort { 9JP{F  
6 3Kec  
private static int MAX_STACK_SIZE=4096; Z A7u66  
private static int THRESHOLD=10; R4p bi=  
/* (non-Javadoc) Zo'lvOpyZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?RrJYj1  
*/ ?9 2+(s  
public void sort(int[] data) { C n4|qX"&t  
int[] stack=new int[MAX_STACK_SIZE]; K\=bpc"Fy  
Q y$8!(  
int top=-1; > aN@)=h}  
int pivot; %[;<'s5e~  
int pivotIndex,l,r; < _c84,[V  
6'|J ;  
stack[++top]=0; +oe ~j\=  
stack[++top]=data.length-1; S &cH1QZ  
?Q:se  
while(top>0){ /vSFQ}W  
int j=stack[top--]; vqv(KsD+::  
int i=stack[top--]; >PL/>   
|M0 XLCNd_  
pivotIndex=(i+j)/2; g oWD~'\  
pivot=data[pivotIndex]; RhX 2qsva-  
TDy@Y> )  
SortUtil.swap(data,pivotIndex,j); li,kW`j+t  
eAm7*2  
file://partition l&U3jeW-o  
l=i-1; eHd{'J<  
r=j; [uZU p*.V  
do{ oKzV!~{0M;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3l<)|!f]g  
SortUtil.swap(data,l,r); >-EoE;s  
} DlfXzKn;  
while(l SortUtil.swap(data,l,r); W>;AMun  
SortUtil.swap(data,l,j); SJIJV6}H  
$(#o)r>_R  
if((l-i)>THRESHOLD){ kZSe#'R's  
stack[++top]=i; .oAg (@^6  
stack[++top]=l-1; ~F uD6f  
} N~Ax78TX  
if((j-l)>THRESHOLD){ 8t0i j  
stack[++top]=l+1; rS)7D  
stack[++top]=j; [Z~>7ayF+)  
} ^EZ)NG=e5  
S7~yRIjB  
} E(8O3*=  
file://new InsertSort().sort(data); =]U[   
insertSort(data); f5mk\^  
} gd#  
/** _mA[^G=gY  
* @param data K31Fp;K  
*/ r(J7&vR}h  
private void insertSort(int[] data) { lT1*e(I  
int temp; I{B8'n{cN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5o rA#B  
} izmL8U ?t  
} an0@EkZ  
} T*|?]k 8@*  
3)__b:7J  
} QBai;p{  
2Xe2 %{  
归并排序: d=N5cCqq  
_S@s  
package org.rut.util.algorithm.support; in(n[K  
P8z+ +h  
import org.rut.util.algorithm.SortUtil; ] M_[*OAb  
jk) V[7P  
/** |VaXOdD`&  
* @author treeroot oV,>u5:B  
* @since 2006-2-2 g7_a8_  
* @version 1.0 6;[iX`LL  
*/ q+|Dm<Ug  
public class MergeSort implements SortUtil.Sort{ [<8<+lH=P  
)wSsxX7:  
/* (non-Javadoc) w4RP*Da?:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  QqtFNG  
*/ Vk{0)W7  
public void sort(int[] data) { Kgk9p`C(  
int[] temp=new int[data.length]; 3PI{LU  
mergeSort(data,temp,0,data.length-1); |hOqz2|  
} 2$\Du9+  
vnXpC!1  
private void mergeSort(int[] data,int[] temp,int l,int r){ XW5r@:e  
int mid=(l+r)/2; mbJ#-^}V  
if(l==r) return ; mZMLDs:  
mergeSort(data,temp,l,mid); j"}alS`-  
mergeSort(data,temp,mid+1,r); 7QQ1oPV  
for(int i=l;i<=r;i++){ ~`8`kk8  
temp=data; ,i,f1XJ|  
} /of,4aaK7  
int i1=l; 1UxRN7  
int i2=mid+1; 7&|fD{:4U  
for(int cur=l;cur<=r;cur++){ b3y@!_'c  
if(i1==mid+1) ]*I&104{  
data[cur]=temp[i2++]; c1jgBty  
else if(i2>r) Ler9~}\D  
data[cur]=temp[i1++]; sE-"TNONZ  
else if(temp[i1] data[cur]=temp[i1++]; {.Nt#l  
else w9i1ag  
data[cur]=temp[i2++]; =GFlaGD  
} |w:7).P  
} ]U'KYrh  
DQKhR sC  
} "sL#)<%  
J&{E  
改进后的归并排序:  Ur]5AJ  
tw\/1wa.  
package org.rut.util.algorithm.support; "d%":F(  
9b()ck-\F#  
import org.rut.util.algorithm.SortUtil; ,v>P05  
=(.HO:#  
/** 611:eLyy&l  
* @author treeroot bWjW_$8  
* @since 2006-2-2 OC"W=[Myl  
* @version 1.0 J"I{0>@  
*/ #L BZ%%v  
public class ImprovedMergeSort implements SortUtil.Sort { !63x^# kg  
#}e)*(  
private static final int THRESHOLD = 10; ;Fp"]z!Qh+  
? 0nbvV5v7  
/* (Cqhk:F  
* (non-Javadoc) /':kJOk<[  
*  A5Y z|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S :9zz  
*/ UT]LF#.(  
public void sort(int[] data) { #Z (B4YO  
int[] temp=new int[data.length]; M2vYOg`t:c  
mergeSort(data,temp,0,data.length-1); b s:E`Q  
} "aAzG+NM  
?w /tq!  
private void mergeSort(int[] data, int[] temp, int l, int r) { $6BXoh!  
int i, j, k; U1J?o #(  
int mid = (l + r) / 2; ks:Z=%o   
if (l == r) m_' 1yX@  
return; a&wl-  
if ((mid - l) >= THRESHOLD) BEifUgCh  
mergeSort(data, temp, l, mid); z/6eP`jj  
else O6l j^  
insertSort(data, l, mid - l + 1); V\X.AGc  
if ((r - mid) > THRESHOLD) vYrqZie<  
mergeSort(data, temp, mid + 1, r); mqw& SxU9  
else h-Ffs  
insertSort(data, mid + 1, r - mid); VmV/~-<Z  
!W .ooy5(  
for (i = l; i <= mid; i++) { NR^z!+oSR  
temp = data; r5tv9#4]  
} fh}\#WE"  
for (j = 1; j <= r - mid; j++) { WPpl9)Qc  
temp[r - j + 1] = data[j + mid]; v#nYH?+~mJ  
} EcBSi995dj  
int a = temp[l]; I tp7X  
int b = temp[r]; Lc0^I<Y  
for (i = l, j = r, k = l; k <= r; k++) { "P"~/<:)  
if (a < b) { 56d,Sk)  
data[k] = temp[i++]; $>]7NTP  
a = temp; bC)d iC  
} else { "*XR'9~7  
data[k] = temp[j--]; L%U-MOS=  
b = temp[j]; qL UbRp  
} Ej8EQ% P  
} >&Y8VLcK  
} (lTM^3 }  
3dQV5E.  
/** s?7g3H5#0k  
* @param data f9X*bEl9;`  
* @param l yA \C3r'  
* @param i 5e6]v2 k  
*/ IF$f^$  
private void insertSort(int[] data, int start, int len) { $IUT5Gia`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yzgDdAM  
} kd9hz-*  
} d7N}-nsB  
} b P4R  
} ]k " j  
i|)<#Ywl  
堆排序: 1^b-J0  
_Cj u C`7  
package org.rut.util.algorithm.support; AQQeLdTq  
4}gqtw:  
import org.rut.util.algorithm.SortUtil; q.g<gu]  
L6J=m#Ld  
/** s+h`,gg9  
* @author treeroot BC 9rsb  
* @since 2006-2-2 7%&#V2  
* @version 1.0 8{(;s$H~  
*/ p\WW~qD  
public class HeapSort implements SortUtil.Sort{ yL7a*C&  
0!eZ&.h?4  
/* (non-Javadoc) oV&AJ=|\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vp{jh-&  
*/ {^1D|y  
public void sort(int[] data) { D42Bm&JocO  
MaxHeap h=new MaxHeap(); cAC]%~orx  
h.init(data); Z)~.OqRw]  
for(int i=0;i h.remove(); aP>%iRk'J!  
System.arraycopy(h.queue,1,data,0,data.length); )lTkqz8v  
} Z455g/=ye  
=3_I;L w  
private static class MaxHeap{ ^Z$%OM,  
Y?{L:4cRX  
void init(int[] data){ hdXdz aNS  
this.queue=new int[data.length+1]; F)z]QJOw  
for(int i=0;i queue[++size]=data; ?MHVkGD  
fixUp(size); Uw8O"}U8  
} 5<0&y3  
} <=W;z=$!Bb  
T&H[JQ/h  
private int size=0; =EA*h_"q9  
W`*S?QGzl@  
private int[] queue; ,JYvfCA  
j,Eo/f+j5  
public int get() { 'j 'bhG  
return queue[1];  {F+7> X  
} }q^M  
jSsbLa@  
public void remove() { :,h47'0A  
SortUtil.swap(queue,1,size--); PmZ-H>  
fixDown(1); K.Nun)<  
} vUk <z*  
file://fixdown 5A g 4o  
private void fixDown(int k) { [y7BHikX)  
int j; !_3R dS  
while ((j = k << 1) <= size) { dq+VW}[EO  
if (j < size %26amp;%26amp; queue[j] j++; 8$xd;+`y'  
if (queue[k]>queue[j]) file://不用交换 mJ2>#j;5f  
break; Y;O\ >o[  
SortUtil.swap(queue,j,k); N,0l5fD~T  
k = j; kAsYh4[  
} f"\G"2C  
} q"7rd?r52  
private void fixUp(int k) { D(yU:^L  
while (k > 1) { PHU#$LG  
int j = k >> 1; bS=aFl#  
if (queue[j]>queue[k]) "g;^R/sfq  
break; 2MS1<VKZ@  
SortUtil.swap(queue,j,k); 9tDo5 29  
k = j; Rf||(KC<  
} 7s+3^'  
} u,mC`gz  
> `R}ulz)  
} ebxpKtEC  
(RW02%`jjy  
} iG()"^G  
&ejJf{id  
SortUtil: !ba /] A/  
Cbv$O o*  
package org.rut.util.algorithm; }pxMO? h$  
e<2?O  
import org.rut.util.algorithm.support.BubbleSort; `O4Ysk72x9  
import org.rut.util.algorithm.support.HeapSort; TUuw  
import org.rut.util.algorithm.support.ImprovedMergeSort; q1Gc0{+)  
import org.rut.util.algorithm.support.ImprovedQuickSort; \bNN]=  
import org.rut.util.algorithm.support.InsertSort; xfZ.  
import org.rut.util.algorithm.support.MergeSort; ,Dd )=  
import org.rut.util.algorithm.support.QuickSort; 6c>cq\~E  
import org.rut.util.algorithm.support.SelectionSort; 96x$Xl;  
import org.rut.util.algorithm.support.ShellSort; | #Z+s-  
"Qj;pqR  
/** r%QTUuRXC3  
* @author treeroot In<L?U?([D  
* @since 2006-2-2 sH(@X<{p  
* @version 1.0 =|_:H$94  
*/ -T3 z@k  
public class SortUtil { =aR'S\<  
public final static int INSERT = 1; BV_rk^}Ur  
public final static int BUBBLE = 2; ~5g2~.&*  
public final static int SELECTION = 3; ' P5t tI#|  
public final static int SHELL = 4; d~ n|F|`:  
public final static int QUICK = 5; WsO'4~X9  
public final static int IMPROVED_QUICK = 6; E:'TZ4Z  
public final static int MERGE = 7; /qM:;:N%j  
public final static int IMPROVED_MERGE = 8; N.R,[K  
public final static int HEAP = 9; ?"-%>y@w  
ElLDSo@WvR  
public static void sort(int[] data) { nW#UBtZ  
sort(data, IMPROVED_QUICK); *-0tj~)>  
} H <7r  
private static String[] name={  ntK#7(U'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0wL-Ak#v  
}; 6^_:N1 @  
I.#V/{J  
private static Sort[] impl=new Sort[]{ X <QSi   
new InsertSort(), wtlIyE  
new BubbleSort(), ;n1< 1M>!  
new SelectionSort(), ]'+PJdA  
new ShellSort(), c4H5[LPF  
new QuickSort(), =*<Cw?Gc  
new ImprovedQuickSort(), Xo^P=uf%  
new MergeSort(), 7:iTx;,v  
new ImprovedMergeSort(), _gDEIoBp  
new HeapSort() `P/7Mf  
}; 5M6`\LyU  
9C9>V]  
public static String toString(int algorithm){ 3Ov? kWFO  
return name[algorithm-1]; tgeX~.  
} #( G>J4E,  
j8gw]V/B:  
public static void sort(int[] data, int algorithm) { +$_.${uwV  
impl[algorithm-1].sort(data); }e[;~g\&  
} W\f u0^  
N1dv}!/*.+  
public static interface Sort { OAx5 LTd  
public void sort(int[] data); `?@7T-v  
} 4I&e_b< 30  
.%Pt[VQ  
public static void swap(int[] data, int i, int j) { 5MU-Eu|*>  
int temp = data; dZ]['y%  
data = data[j]; e0rh~@E  
data[j] = temp; Qy< ~{6V  
} ICq  
} 9*`(*>S  
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