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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。 $vn x)#r3  
插入排序: Sa:;j4  
R~RE21kAc  
package org.rut.util.algorithm.support; OA[fQH#{lX  
5`::#[  
import org.rut.util.algorithm.SortUtil; * C*aH6*  
/**  D28>e  
* @author treeroot q$}gQ9'z'  
* @since 2006-2-2 *nV"X0&  
* @version 1.0 OM@z5UP  
*/ X*&Thmee  
public class InsertSort implements SortUtil.Sort{ MK!Aq^Jz  
L#!m|_Mz  
/* (non-Javadoc) }%0X7'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _gl1Qtv@rf  
*/ J!@R0U.  
public void sort(int[] data) { FrV8_[  
int temp; a!;#u 8f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G P`sOPr  
} Ejyo oO45  
} n6C!5zq7U  
} 9aKO||i,  
/2 $d'e  
} p>W@h*[6w  
pLMaXX~4_  
冒泡排序: LQ||7>{eX  
gYmO4/c,  
package org.rut.util.algorithm.support; -Q%Pg<Q-#  
SES-a Mi3  
import org.rut.util.algorithm.SortUtil; Na+h+wD.D  
!y$+RA7\  
/** VaO[SW^  
* @author treeroot !;Pp)SRzKG  
* @since 2006-2-2 JX#0<U|L  
* @version 1.0 .(yJ+NU  
*/ nB4+*=$E+-  
public class BubbleSort implements SortUtil.Sort{ .k|\xR  
FRayB VHL  
/* (non-Javadoc) cV4Y= &  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fn{Pmo*rs  
*/ lZ) qV!<  
public void sort(int[] data) { U7-*]ik  
int temp; f#gV>.P;h\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2_)gJ_kP  
if(data[j] SortUtil.swap(data,j,j-1); @H}Hjg_>m  
} 9d!mGnl  
} nt%p@e!,  
} Hv%$6,/*v  
} V$dhiP z  
BW"24JhF"  
} x]t$Zb/Uxa  
v'r)d-T   
选择排序: ;f)AM}~^Q  
c Ze59  
package org.rut.util.algorithm.support; kX+98?h-C  
aF>&X-2  
import org.rut.util.algorithm.SortUtil; 9VSi2p*  
'p[B`Ft3F  
/** \[ 4y  
* @author treeroot =uR3|U(.|u  
* @since 2006-2-2 (]zi;  
* @version 1.0 -oB=7+g  
*/ @0 [^SU?  
public class SelectionSort implements SortUtil.Sort { Dd:^ {  
$  k_6  
/* (D{J|  
* (non-Javadoc) z :u)@>6D1  
* bc>&Qj2Z7c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xT!<x({  
*/ QH?sx k2  
public void sort(int[] data) { Bi>]s%zp  
int temp; _7dp(R  
for (int i = 0; i < data.length; i++) { ,,lR\!>8  
int lowIndex = i; uJ0Wb$%  
for (int j = data.length - 1; j > i; j--) { }^^c/w_  
if (data[j] < data[lowIndex]) { flOXV   
lowIndex = j; R]0`-_T  
} FW{K[km^P  
} '"'RC O  
SortUtil.swap(data,i,lowIndex); $KlaZ>D h  
} d$Y_vX<  
} (;-_j /  
3jHg9M23[^  
} .bj:tmz  
Np/vPaAk  
Shell排序: U=5~]0g  
M4% 3a j  
package org.rut.util.algorithm.support; -"?~By}<C  
l+X\>,  
import org.rut.util.algorithm.SortUtil; 3{wuifS  
MZ~N}y  
/** w(K|0|t  
* @author treeroot SwM=?<  
* @since 2006-2-2 XWq"_$&LF  
* @version 1.0 d1'= \PYr  
*/ 5hTScnL%  
public class ShellSort implements SortUtil.Sort{ `7[!bCl  
$9:  @M.  
/* (non-Javadoc) O2"V'(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ew]G@66  
*/ 7nP{a"4_  
public void sort(int[] data) { W_,7hvE?"H  
for(int i=data.length/2;i>2;i/=2){ KL$>j/qT  
for(int j=0;j insertSort(data,j,i); W>: MK-_ J  
} NQqNBI?cr  
} `,4@;j<^@  
insertSort(data,0,1); Bx6,U4o*  
} '`f+QP=`  
C &y 2I  
/** fzvyR2 I  
* @param data OXn-!J90P  
* @param j O,S>6o)?  
* @param i -)R =p"-w  
*/ Oqq' r"S  
private void insertSort(int[] data, int start, int inc) { ze21Uj1x*  
int temp; hMUUnr"8;i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -= izu]Fb,  
} $1Zr.ERL|(  
} =%s6QFR  
} NytodVZ'3  
R~fk/T?  
} YHMJ5IM@.  
B]6Lbp"oo  
快速排序: *xY3F8  
xvomn`X1  
package org.rut.util.algorithm.support; p1 ("  
{-f%g-@L6|  
import org.rut.util.algorithm.SortUtil; eKZS_Qd  
ZSyXzop  
/** |f!J-H)  
* @author treeroot &0fV;%N  
* @since 2006-2-2 # z7yoP  
* @version 1.0 :{B']~Xf  
*/ w0vsdM;G  
public class QuickSort implements SortUtil.Sort{ H4j1yD(d  
#9~,d<H  
/* (non-Javadoc) 5%}!z~8Y4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `(=?k[48  
*/ c]bG5  
public void sort(int[] data) { ]lqZ9rO  
quickSort(data,0,data.length-1); OhlK;hvdB*  
} {TdxsE>  
private void quickSort(int[] data,int i,int j){ 1LAd5X  
int pivotIndex=(i+j)/2; "fUNrhCx  
file://swap 0,Ib74N'w  
SortUtil.swap(data,pivotIndex,j); .yFO] r1aL  
KWAd~8,mk  
int k=partition(data,i-1,j,data[j]); oe0YxSauL  
SortUtil.swap(data,k,j); Q]3]Z/i  
if((k-i)>1) quickSort(data,i,k-1); =1'WZp}D5  
if((j-k)>1) quickSort(data,k+1,j); bf {_U%`  
,np|KoG|M  
} 5FF28C)>/  
/** V>GJO(9  
* @param data ?mSZQF:d@  
* @param i NJVkn~<  
* @param j Q w - z  
* @return $R+gA{49%  
*/ # ,eC&X45  
private int partition(int[] data, int l, int r,int pivot) { _`p^B%[  
do{ _VTpfeL@n  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); MI(;0   
SortUtil.swap(data,l,r); ^S?f"''y3  
} tE <?L  
while(l SortUtil.swap(data,l,r); _Hfpizm  
return l; 5`gVziS!S  
} }V`_ (%Q-e  
-KH"2q  
} o?j8"^!7  
c 3o3i  
改进后的快速排序: (@qS  
AE~@F4MK  
package org.rut.util.algorithm.support; dqo-.,=  
1~3dX[&  
import org.rut.util.algorithm.SortUtil; :]CL}n$*  
Oh>hy Y)}  
/** @)vQ>R\k<  
* @author treeroot "@/pQoLy  
* @since 2006-2-2 `~"'\Hw  
* @version 1.0 :@ VCKq!  
*/ ,S(s  
public class ImprovedQuickSort implements SortUtil.Sort { 5MD'AP:  
(E&M[hH+  
private static int MAX_STACK_SIZE=4096; ZbjUOlE02  
private static int THRESHOLD=10; ,J-|.ER->  
/* (non-Javadoc) p]/[ji  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r|jM;  
*/ $!y^t$u$@  
public void sort(int[] data) { 9c }qVf-i  
int[] stack=new int[MAX_STACK_SIZE]; 4 2DMmwB   
HW,v"  
int top=-1; _nEVmz!zg  
int pivot; ;134$7!Y  
int pivotIndex,l,r; :FtV~^Z  
F]r'j ZL  
stack[++top]=0; @TX@78fWz=  
stack[++top]=data.length-1; )*{B_[  
Sy4|JM-5  
while(top>0){ U1pE2o-  
int j=stack[top--]; p@uHzu7  
int i=stack[top--]; b4bd^nrqV  
?Tu=-ppw  
pivotIndex=(i+j)/2; =T&<z_L  
pivot=data[pivotIndex]; e84%Y8,0  
0GeL">v,:=  
SortUtil.swap(data,pivotIndex,j); \AA9 m'BZ  
NH}o`x/  
file://partition _>kc:  
l=i-1; g,M-[o=Fk  
r=j; d;wq@ e  
do{ ls!A'@J  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3o/f, }_  
SortUtil.swap(data,l,r); zwJ&K;"y(  
} :yJ([  
while(l SortUtil.swap(data,l,r); Z f<T`'_d  
SortUtil.swap(data,l,j); D1v0`od'  
CI-za !T  
if((l-i)>THRESHOLD){ 3&AJN#c  
stack[++top]=i; QRBx}!:NZ#  
stack[++top]=l-1; =BE!  
} Y,Rr[i"j  
if((j-l)>THRESHOLD){ w5~j|c=_W  
stack[++top]=l+1; 6o\uv  
stack[++top]=j; TNA7(<"fV|  
} ~LV]cX2J(  
z},\1^[  
} hhZ%{lqL  
file://new InsertSort().sort(data); X#JUorGp  
insertSort(data); {"{]S12N  
} ~wv$uL8y  
/** $ B&Zn Z?  
* @param data =#y;J(>~|  
*/ .udLMS/_  
private void insertSort(int[] data) { h4|}BGO  
int temp; 87+fd_G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RO/(Ldh  
} GWPBP-)0  
} Q>Z~={"  
} F!)[H["_  
4* >j:1  
} w(S~}'Sg*P  
2(l0Lq*  
归并排序: 2z;3NUL$n  
{2P18&=  
package org.rut.util.algorithm.support; IjRUr\l  
0NZ'(qf~9  
import org.rut.util.algorithm.SortUtil; !ae?EJm"  
W4d32+V  
/** EwFq1~  
* @author treeroot KhB775  
* @since 2006-2-2 t^YtP3`?b  
* @version 1.0 *P`wuXn}  
*/ $o5i15Oy.  
public class MergeSort implements SortUtil.Sort{ X5[t6q!  
ki@C}T5  
/* (non-Javadoc) wyB]!4yy,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .qZz 'Eq[  
*/ Y8v[kuo7  
public void sort(int[] data) { _&V,yp!|  
int[] temp=new int[data.length]; jF}kV%E  
mergeSort(data,temp,0,data.length-1); Wd)\r.pJ  
} E\s1p: %  
|a#ikY _nd  
private void mergeSort(int[] data,int[] temp,int l,int r){ f7Nmvla[q  
int mid=(l+r)/2; t7x<=rW7u  
if(l==r) return ; 87l*Y|osP  
mergeSort(data,temp,l,mid); Eq;w5;7s  
mergeSort(data,temp,mid+1,r); 8YlZ({f  
for(int i=l;i<=r;i++){ j0{`7n  
temp=data; zE$HHY2ovi  
} -sJD:G,%  
int i1=l; Fd<Ouyxqe  
int i2=mid+1; :AztHf?X  
for(int cur=l;cur<=r;cur++){ v8yCf7+"  
if(i1==mid+1) LS<+V+o2%  
data[cur]=temp[i2++]; T&pCLvkz  
else if(i2>r) zc)nDyn  
data[cur]=temp[i1++]; &>+T*-'  
else if(temp[i1] data[cur]=temp[i1++]; Ah7"qv'L\  
else  eu$VKLY*  
data[cur]=temp[i2++]; 0/f|ZH ~!  
} -%fj-Y7y  
} +CBN[/Z^i  
hjg1By(  
} HLV8_~gQPf  
!vu-`u~86  
改进后的归并排序: MSM8wYcD  
~%>i lWaHB  
package org.rut.util.algorithm.support; @~ke=w6&pe  
]`x+wWe  
import org.rut.util.algorithm.SortUtil; Fn`Zw:vp6  
o}KVT%}  
/** U~ a\v8l~  
* @author treeroot @Drl5C}+  
* @since 2006-2-2 SQK82 /  
* @version 1.0 8ly)G  
*/ K(u pz n*a  
public class ImprovedMergeSort implements SortUtil.Sort { us|Hb  
1DcBF@3sWG  
private static final int THRESHOLD = 10; Q}B]b-c+E  
\a;xJzc9  
/* -avxH?;?7  
* (non-Javadoc) >e6OlIW  
* ]h`*w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 18F}3t??  
*/ q9ra  
public void sort(int[] data) { 5"57F88Y1  
int[] temp=new int[data.length]; +5|k#'%5  
mergeSort(data,temp,0,data.length-1); PV~D;  
} cb)7$S  
m\jjj^f a  
private void mergeSort(int[] data, int[] temp, int l, int r) { @uRJl$3  
int i, j, k; d5Ae67  
int mid = (l + r) / 2; Gy):hGgN  
if (l == r) @,sjM]  
return; aB;f*x  
if ((mid - l) >= THRESHOLD) s1cu5eCt  
mergeSort(data, temp, l, mid); \w1XOm [)  
else `x _(EZ  
insertSort(data, l, mid - l + 1); Z9M$*Zp  
if ((r - mid) > THRESHOLD) )Hin{~h  
mergeSort(data, temp, mid + 1, r); rMIX{K)'f  
else Qm3F=*)d  
insertSort(data, mid + 1, r - mid); d]sqj\Q57  
-n|>U:  
for (i = l; i <= mid; i++) { c$ib-  
temp = data; !6X6_ +}M  
} P/ 6$TgQ  
for (j = 1; j <= r - mid; j++) { v?]a tb/h`  
temp[r - j + 1] = data[j + mid]; F68e I%Y  
} [sH3REE1h  
int a = temp[l]; z~`X4Segw  
int b = temp[r]; 7$%G3Q|)L  
for (i = l, j = r, k = l; k <= r; k++) { $dI mA  
if (a < b) { &UnhYG{A  
data[k] = temp[i++]; [5IbR9_  
a = temp; H0"'jd  
} else { J'ce?_\?PY  
data[k] = temp[j--]; (SW6?5  
b = temp[j]; +i!HMyM  
} Gu$J;bXVj  
} e6_8f*o|s  
} &':C"_|&r  
cd1-2-4U  
/** Zx{Sxv"  
* @param data \`~YW<D  
* @param l ]3,9 ."^  
* @param i {~9HJDcM  
*/ e{87n>+,  
private void insertSort(int[] data, int start, int len) { n;:.UGl9.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >i  
} 3]kM&lK5\  
} 7P(o!%H  
} oS%(~])\  
} ldp9+7n~  
.up[wt gN  
堆排序: U'F}k0h?\'  
dO2?&f  
package org.rut.util.algorithm.support; <S7SH-{_\  
j$_?g!I=gK  
import org.rut.util.algorithm.SortUtil; ^cPVnl  
&S+*1<|`K  
/** z6J12tu  
* @author treeroot K!ogpd&X&  
* @since 2006-2-2 $#n9C79Z@  
* @version 1.0 IxUj(l1Fm  
*/ M/.M~/ ~  
public class HeapSort implements SortUtil.Sort{ v4Ag~Evcx  
{:"<E?+  
/* (non-Javadoc) vzfMME17  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 25`W"x_  
*/ -E6av|c,F  
public void sort(int[] data) { )!rD&l$tE  
MaxHeap h=new MaxHeap(); ?/MkH0[G=  
h.init(data); d m"R0>  
for(int i=0;i h.remove(); NvIg,@}  
System.arraycopy(h.queue,1,data,0,data.length); tgCp2 `n  
} U1/I( w  
p2l@6\m\  
private static class MaxHeap{ W^^0Rh_  
vjGJRk|XED  
void init(int[] data){ =/a`X[9vI  
this.queue=new int[data.length+1]; b*S,8vE]  
for(int i=0;i queue[++size]=data; "2C}Pr ,p8  
fixUp(size); [g@qZ5I.  
} N e{=KdzT  
} Gev\bQa  
p#4*:rpq4  
private int size=0; |=:@<0.'  
X:`=\D  
private int[] queue; }*9F`=%F  
mz1m^p)~{  
public int get() { 9+m>|"F0  
return queue[1]; _z%\53h  
} ?+=,t]`!m  
CZ] Dm4  
public void remove() { l[5** ?#  
SortUtil.swap(queue,1,size--); <astIu Au  
fixDown(1);  Rh6CV  
} j8e=],sQ  
file://fixdown &/^p:I  
private void fixDown(int k) { sV5k@1Y  
int j; [V?HK_~  
while ((j = k << 1) <= size) { lrHN6:x(Y4  
if (j < size %26amp;%26amp; queue[j] j++; GNmP_N  
if (queue[k]>queue[j]) file://不用交换 @+M1M 2@Xz  
break; \NDW@!X  
SortUtil.swap(queue,j,k); AX{<d@z`j  
k = j; rT;l#<#VE  
} Z-CA9&4Uh  
} -6_<]  
private void fixUp(int k) { ,ynN801\m  
while (k > 1) { lgVT~v{U`n  
int j = k >> 1; }Tm+gJA  
if (queue[j]>queue[k]) +K'YVB U}  
break; (L4C1h_]9  
SortUtil.swap(queue,j,k); 34)l3UI~  
k = j; })@xWU6!  
} C<:wSS^@1  
} 3_;=y\F  
`xv Uq\  
} >J;J&]Olf  
RjP]8tH&  
} z<A8S=s6n  
?S=y>b9R  
SortUtil: dmkGIg}  
I31Nu{  
package org.rut.util.algorithm; D?Ol)aj?  
?T%"Jgy8  
import org.rut.util.algorithm.support.BubbleSort; @fo(#i&  
import org.rut.util.algorithm.support.HeapSort; wb#[&2i  
import org.rut.util.algorithm.support.ImprovedMergeSort; tD}{/`{_t  
import org.rut.util.algorithm.support.ImprovedQuickSort; w H=7pS"s  
import org.rut.util.algorithm.support.InsertSort; b?Q$UMAbH  
import org.rut.util.algorithm.support.MergeSort; w(+ L&IBC  
import org.rut.util.algorithm.support.QuickSort; ?en-_'}~a  
import org.rut.util.algorithm.support.SelectionSort; fOSJdX0e|Q  
import org.rut.util.algorithm.support.ShellSort; m|?1HCRXRI  
V0,5c`H c  
/** {Gfsiz6  
* @author treeroot 8KR17i1  
* @since 2006-2-2 7Y.yl F:  
* @version 1.0 1GR|$E  
*/ &?@U_emLi  
public class SortUtil { fRk'\jzT  
public final static int INSERT = 1; %T<c8w}dP  
public final static int BUBBLE = 2; 1M_6X7PH  
public final static int SELECTION = 3; rjfWty%6pX  
public final static int SHELL = 4; mDwuJf8}  
public final static int QUICK = 5; 8EiS\$O-  
public final static int IMPROVED_QUICK = 6; P%[ { 'u  
public final static int MERGE = 7; U[yA`7Zs}  
public final static int IMPROVED_MERGE = 8; ~QE?GL   
public final static int HEAP = 9; {Ho_U&<  
x`wUi*G  
public static void sort(int[] data) { rwwyYIlEg  
sort(data, IMPROVED_QUICK); 'R$/Qt;uA  
} 5A %TpJ  
private static String[] name={ k+@ :+ RL  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g:c?%J  
}; 0lqh;/  
l'!_km0{d  
private static Sort[] impl=new Sort[]{ ZW;Re5?DJ  
new InsertSort(), I L&PN`#  
new BubbleSort(), u[wDOw  
new SelectionSort(), E7SmiD@)  
new ShellSort(), /^~)iTwH  
new QuickSort(), y(C',Xn  
new ImprovedQuickSort(), 44^jE{,9  
new MergeSort(), LsMq&a-j2  
new ImprovedMergeSort(), WT 5 2  
new HeapSort() tC+1 1M  
}; rP(;^8l"  
+r"fv*g"  
public static String toString(int algorithm){ V2m= m}HQ  
return name[algorithm-1]; .)t*!$5=N  
} (LVzE_`  
,4,./wIq  
public static void sort(int[] data, int algorithm) { b9Eb"  
impl[algorithm-1].sort(data); =.`e4}u \X  
} W$D:mw7  
ZS&+<kGD  
public static interface Sort { .q 4FGPWz  
public void sort(int[] data); =':SOO7  
} o|s|Wm x>u  
8RZqoQDH  
public static void swap(int[] data, int i, int j) { &$pQ Jf  
int temp = data; Ni;jMc  
data = data[j]; EUPc+D3  
data[j] = temp; 6SAYe%e  
} zP!j {y4w  
} dHn,;Vv^6  
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10+5=?,请输入中文答案:十五