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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。 i' |S g  
插入排序: .6OE8w 1  
Jp5~iC2d  
package org.rut.util.algorithm.support; S` X;2\:  
u8N+ht@  
import org.rut.util.algorithm.SortUtil; fX} dh9  
/** XX}RbE#4  
* @author treeroot } "y{d@  
* @since 2006-2-2 94|BSxc  
* @version 1.0 n&[U/`o  
*/ -_pI:K[  
public class InsertSort implements SortUtil.Sort{ +5);"71  
;Cyt2]F  
/* (non-Javadoc) w>VM--  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -oe&1RrdVg  
*/ }N4=~'R  
public void sort(int[] data) { eB!0:nHN  
int temp; WZ ~rsSZSV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z^`>;n2  
} R4QXX7h!  
} }[l`R{d5q>  
} xp>r a2A  
tM ]qR+  
} jr@<-.  
6]Ppa ~Xwq  
冒泡排序: tq>QZEg  
eyl+D sK  
package org.rut.util.algorithm.support; ga~rllm;i  
0V`0="rQ  
import org.rut.util.algorithm.SortUtil; 't^OIil  
A@du*5> (  
/** 3Xf}vdgdM$  
* @author treeroot q^goi 1  
* @since 2006-2-2 ; >.>vLF  
* @version 1.0 P",~8Aci(  
*/ pt|u?T_+  
public class BubbleSort implements SortUtil.Sort{ ,uE WnZ"4  
]X4A)%i  
/* (non-Javadoc) oe4Fy}Y_;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UG48g}  
*/ L&'2  
public void sort(int[] data) { CQzJ_aSJ (  
int temp; sRb)*p'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (K>5DU  
if(data[j] SortUtil.swap(data,j,j-1); G4MNcy  
} PS!f&IY}[.  
} ShHm7+fV  
} cq % =DZ  
} -~v;'zOO  
AVi w}Y J  
} EQz`o+  
&kRkOjuk  
选择排序: +`_%U7p(  
O^4:4tRpt  
package org.rut.util.algorithm.support; Z]":xl\7  
y$#mk3(e~t  
import org.rut.util.algorithm.SortUtil; HDA!;&NRS  
B]InOlc47  
/** &FIPEe#n  
* @author treeroot ^0A'XCULG  
* @since 2006-2-2 mTYEK4}  
* @version 1.0 r/+ <_3  
*/ (?I8/KYR  
public class SelectionSort implements SortUtil.Sort { #U(dleT8  
8GV$L~i  
/*  [L] ca*  
* (non-Javadoc) qnv9?Xh  
* C-m OtI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O,]t.1V  
*/ l)HF4#Bs  
public void sort(int[] data) { .P9ALJP(b  
int temp; y7ijT='8  
for (int i = 0; i < data.length; i++) { k P>G4$e_v  
int lowIndex = i; C B=H1+  
for (int j = data.length - 1; j > i; j--) { r2qxi'  
if (data[j] < data[lowIndex]) { oAA%pZ@  
lowIndex = j; dBX%/  
} I(bH.{1n7  
} I/_`/mQ  
SortUtil.swap(data,i,lowIndex); -?&wD["y  
} e ,k,L  
} ZVR0Kzu?Ra  
W$v5o9\Px  
} uRh`qnL  
0^5SL/2  
Shell排序: `\(Fax  
7?qRY9Qu  
package org.rut.util.algorithm.support; uf^"Y3  
8BhLO.(<O  
import org.rut.util.algorithm.SortUtil; ;Q:^|Fw!F  
h~urZXD<  
/** aYkm]w;C  
* @author treeroot '|G_C%,B  
* @since 2006-2-2 a RC >pK.  
* @version 1.0 Q: [d   
*/ mH}/QfUlq  
public class ShellSort implements SortUtil.Sort{ mfIY7DP  
Nf%jLK~  
/* (non-Javadoc) $A9!} `V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q!$?G]-%  
*/ lnEc5J@c>i  
public void sort(int[] data) { c&e?_@} |  
for(int i=data.length/2;i>2;i/=2){ M4XnuFGB[w  
for(int j=0;j insertSort(data,j,i); ,Si\ky7L  
} N9r02c  
} kZBIXW,G  
insertSort(data,0,1); =oV8 !d%]  
} iL)q':xz  
z0t6}E<VIR  
/** nG1 mx/w  
* @param data UsNr$MO {  
* @param j d>M&jSCL  
* @param i Xl.h&x0? 8  
*/ @c,}\"(  
private void insertSort(int[] data, int start, int inc) { J@=1zL  
int temp; KCGs*kp>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /iQ}DbtRb  
} &G@(f=  
} Y [0 S  
} BBm.;=8@ ^  
<fCgU&  
} t7H2z}06=h  
cmmH)6c>  
快速排序: @f{yx\u/  
R)?K+cJ%  
package org.rut.util.algorithm.support; ja$e)  
[9u/x%f(  
import org.rut.util.algorithm.SortUtil; #?k$0|60  
cYF R.~p  
/** +M/04  
* @author treeroot A=o p R  
* @since 2006-2-2 &kB[jz_[A  
* @version 1.0 >r2m1}6g"  
*/ L~cswG'K  
public class QuickSort implements SortUtil.Sort{ 2fT't"gw  
S)p{4`p%  
/* (non-Javadoc) :W_S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z1aApS  
*/ ?C(Z\"IX  
public void sort(int[] data) { Ro*$7j0!Hf  
quickSort(data,0,data.length-1); 4tz8^z[Kw  
} Uq 2Uv  
private void quickSort(int[] data,int i,int j){ Is` S  
int pivotIndex=(i+j)/2; s<cg&`u,<M  
file://swap su<_?'uH  
SortUtil.swap(data,pivotIndex,j); i DO`N!  
,--/oP  
int k=partition(data,i-1,j,data[j]); &THM]3:  
SortUtil.swap(data,k,j); 0|nvi=4~e|  
if((k-i)>1) quickSort(data,i,k-1); J6;^:()  
if((j-k)>1) quickSort(data,k+1,j); ;'{:}K=h  
.L0pS.=LT  
} <T[%03  
/** 6A7UW7/  
* @param data %f\ M61Z  
* @param i E1_FK1*V;  
* @param j !T@>Ld:  
* @return b#FN3AsR  
*/ v1?P$f*g  
private int partition(int[] data, int l, int r,int pivot) { >|KfO>  
do{ Unc;@=c  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6*Qn9Q%p-  
SortUtil.swap(data,l,r); sTU]ntoQqR  
} CsS0(n(x  
while(l SortUtil.swap(data,l,r); l"p%]\tZ  
return l; eC%.xu^  
} 0PE $n  
e<dFvMO  
} oJVpNE[3]  
d}3<nz,  
改进后的快速排序: I&3L1rl3{*  
F IDNhu  
package org.rut.util.algorithm.support; l]Jk  }.  
m1a0uEA G  
import org.rut.util.algorithm.SortUtil; >Y?B(I2e  
R!lNm,i  
/** aD8cqVhM3&  
* @author treeroot 3M8P%  
* @since 2006-2-2 8K*X]Z h  
* @version 1.0 BoG/Hd.S  
*/ .!RBh LH_g  
public class ImprovedQuickSort implements SortUtil.Sort { L.$9ernVY  
M.zS +  
private static int MAX_STACK_SIZE=4096; ;'!U/N;-  
private static int THRESHOLD=10; 2x{@19w)C  
/* (non-Javadoc) 17tph;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .qi$X!0  
*/ aCcBmc  
public void sort(int[] data) { S&}7jRH1  
int[] stack=new int[MAX_STACK_SIZE]; EShc1KPqc  
*E+2E^B  
int top=-1; }OJ*o  
int pivot; `sQ\j Nu  
int pivotIndex,l,r; @4^5C-  
L^yQb4$&M  
stack[++top]=0; E D*=8 s2  
stack[++top]=data.length-1; Ij(S"P@  
p<?~~7V  
while(top>0){ 4,tMaQ  
int j=stack[top--]; d%Jl9!u  
int i=stack[top--]; \O/" F;  
,*Y*ov23aQ  
pivotIndex=(i+j)/2; 7)O?jc  
pivot=data[pivotIndex]; vnMt>]w-}  
3hab51J  
SortUtil.swap(data,pivotIndex,j); k:4 Z c3  
>};,Byv!%  
file://partition ~` @dI  
l=i-1; B~^MhX +j  
r=j; *#;8mM  
do{ )|@b GEk  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z2)f$ c  
SortUtil.swap(data,l,r); Q2cF++Q1  
} B)O=wx  
while(l SortUtil.swap(data,l,r); NoO>CjeFb  
SortUtil.swap(data,l,j); I.r &;   
iC?s`c0B  
if((l-i)>THRESHOLD){ P0~3<h?U8  
stack[++top]=i; <Q/^[  
stack[++top]=l-1; y A?>v'K  
} xr&wV0O '  
if((j-l)>THRESHOLD){ H/Cv?GJF  
stack[++top]=l+1; JaKR#Y$+~  
stack[++top]=j; bYQ h{q  
} 0bQaXxt|p  
*yKsgH  
} !CtY.Lp  
file://new InsertSort().sort(data); 0 lXV+lj  
insertSort(data); %eT4Q~}5"  
} F')T:;,s  
/** [q cT?h  
* @param data `IOp*8  
*/ MVg`6&oH  
private void insertSort(int[] data) { >hoIJZP,  
int temp; X_C9Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;_amgRP7$  
} N#@xo)-H  
} 8A"[n>931  
} DBAJkBs  
VH4P|w[YF  
} %}%D8-d}G  
/O|!Sg{  
归并排序: )b m|],'  
3:<+9X  
package org.rut.util.algorithm.support; $5GvF1  
E}lU?U5i  
import org.rut.util.algorithm.SortUtil; a({qc0+UK  
_DMj )enH"  
/** c=I!?a"  
* @author treeroot cBmo#:>'  
* @since 2006-2-2 0 !9vGs  
* @version 1.0  twz  
*/ 9<kKno  
public class MergeSort implements SortUtil.Sort{ )PL'^gR r  
, M/-lW  
/* (non-Javadoc) pWSYbN+d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8H./@~_ =  
*/ %=/Y~ml?  
public void sort(int[] data) { vNL f)B  
int[] temp=new int[data.length]; ZB:Fjq  
mergeSort(data,temp,0,data.length-1); DX}EOxO,.  
} w4'(Y,(`  
"sz LTC]*6  
private void mergeSort(int[] data,int[] temp,int l,int r){ Yk(OVl T  
int mid=(l+r)/2; Z%Y=Lx  
if(l==r) return ; L'6_~I  
mergeSort(data,temp,l,mid); TUJ]u2J8?  
mergeSort(data,temp,mid+1,r); W2|*:<Jt  
for(int i=l;i<=r;i++){ .!KlN%As  
temp=data; [4 g5 {eX  
} .2Q`. o)  
int i1=l; `PSr64h:D  
int i2=mid+1; Y((z9-`  
for(int cur=l;cur<=r;cur++){ *u>2"!+Ob  
if(i1==mid+1) f<xF+wE  
data[cur]=temp[i2++]; $%;NX[>j  
else if(i2>r) <3P?rcd,5K  
data[cur]=temp[i1++]; n]ar\f  
else if(temp[i1] data[cur]=temp[i1++]; d`StBXG!  
else R" 5/  
data[cur]=temp[i2++]; P0RM df  
} / Zz2=gDY  
} qz E/n   
QoDWR5*^D  
} ^*A/92!yF  
174H@   
改进后的归并排序: fB1JU1  
s.1(- "DU  
package org.rut.util.algorithm.support; q]<Xx{_  
pTGq4v@6x  
import org.rut.util.algorithm.SortUtil; j!mI9*hP  
LAw X9q`  
/** `C=!8q  
* @author treeroot s[nOB0  
* @since 2006-2-2 =)Ew6} W6  
* @version 1.0 Y4@~NCU/  
*/ q*DR~Ov  
public class ImprovedMergeSort implements SortUtil.Sort { i= ~HXr}  
,U>g LTS  
private static final int THRESHOLD = 10; <2A4}+p:  
RK'3b/T  
/* 1uB}Oe 2~  
* (non-Javadoc) *X%`MN  
* K_]LK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Ufcy{x#  
*/ v&H&+:<  
public void sort(int[] data) { {zbH.V[  
int[] temp=new int[data.length]; l3-Ksw U  
mergeSort(data,temp,0,data.length-1); d#ld*\|  
} "^_p>C)T  
KT?vs5jg$&  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4$IPz7  
int i, j, k; `~@BU  
int mid = (l + r) / 2; ywq{9)vq  
if (l == r) 8"oS1W  
return; px4Z  
if ((mid - l) >= THRESHOLD) gjo\g P@  
mergeSort(data, temp, l, mid); He#+zE ;  
else JFYeOmR+l  
insertSort(data, l, mid - l + 1); \hi{r@k>}  
if ((r - mid) > THRESHOLD) yc%AkhX*  
mergeSort(data, temp, mid + 1, r); ^o,@9GT s  
else 'd(}bYr)  
insertSort(data, mid + 1, r - mid); eWwSD#N#  
pNQd\nY|0  
for (i = l; i <= mid; i++) { OE4 2{?)  
temp = data; K\?vTgc(  
} Ij=hmTl{P  
for (j = 1; j <= r - mid; j++) { }E?s*iP  
temp[r - j + 1] = data[j + mid]; ).v;~yE   
} &]#D`u  
int a = temp[l]; 'J!P:.=a>  
int b = temp[r]; .YS[Md{  
for (i = l, j = r, k = l; k <= r; k++) { _9L2JN$R6  
if (a < b) { HO' ELiZ_q  
data[k] = temp[i++]; 7F+f6(hB  
a = temp; .Z/"L@  
} else { w'L;`k;Q  
data[k] = temp[j--]; >St  
b = temp[j]; !*CL>}-,  
} uidE/7  
} Q8\Ks|u]  
} o &Nr5S  
bZ3CJ f&mE  
/** &=02.E@  
* @param data s[xdID^3.  
* @param l J3q}DDnEo  
* @param i Qz<v. _  
*/ +d#ZSNu/  
private void insertSort(int[] data, int start, int len) { Zqx5I~  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >TL0hBaaR  
} >aa-ix &  
} [k1N`K(M  
} Cs*u{O  
} F~* 5`o  
JY>]u*=  
堆排序: rRsLl/d  
{ 0Leua  
package org.rut.util.algorithm.support; DM>j@(uWF  
XqJ@NgsY  
import org.rut.util.algorithm.SortUtil; C/]0jAAE7  
{H0B"i  
/** 8.9S91]=  
* @author treeroot T}4RlIZF  
* @since 2006-2-2 oq0G@  
* @version 1.0 ,&l>^w/  
*/ 1lMU('r%  
public class HeapSort implements SortUtil.Sort{ '9^x"U9c  
/B1NcRS  
/* (non-Javadoc) *,Y+3yM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jfgAI7;b  
*/ ?[VS0IBS  
public void sort(int[] data) { \idg[&}l}  
MaxHeap h=new MaxHeap(); m\jp$  
h.init(data); B-eYWt8s  
for(int i=0;i h.remove(); uFECfh  
System.arraycopy(h.queue,1,data,0,data.length); d3Y#_!)  
} *K0CUir|  
~Jq<FVK  
private static class MaxHeap{ QF\NHV  
se(_`a/4Q  
void init(int[] data){ hEEbH@b  
this.queue=new int[data.length+1]; v?Y9z!M  
for(int i=0;i queue[++size]=data; r%TgZ5~u  
fixUp(size); \Dr@n^hk@[  
} w"A'uFXLc  
} T_I"Tsv  
4Jo:^JV  
private int size=0; "-^TA_XfI  
 8tPq5i  
private int[] queue; )e{~x u  
-bKli<C  
public int get() { L6U[H#3(  
return queue[1]; 9Y*6AaKE6  
} RQ|!?\a=  
i' N  
public void remove() { \!s0VEE  
SortUtil.swap(queue,1,size--); 7eh}Je8  
fixDown(1); +h[$\_y  
} Xt9?7J#\T  
file://fixdown &.Yh_  
private void fixDown(int k) { 9I9J}&4  
int j; A^o  
while ((j = k << 1) <= size) { l<^#@SH  
if (j < size %26amp;%26amp; queue[j] j++; c+-L>dsss  
if (queue[k]>queue[j]) file://不用交换 H VG'v>s@  
break; nvpdu)q<  
SortUtil.swap(queue,j,k); zD2B hta y  
k = j; J;'?(xO3\  
} k,b(MAiQ0  
} t</Kel|D  
private void fixUp(int k) { ;>|:I(l;  
while (k > 1) { '{U56^b]  
int j = k >> 1; Px'%5TKN  
if (queue[j]>queue[k]) _Z5l Nu  
break; ~])\xC  
SortUtil.swap(queue,j,k); >^> \y8on  
k = j; RH>b,  
} Wc03Sv&FZ  
} r~TiJ?8I  
y&9v0&o  
} w.J2pvyB  
c?b?x 6 2  
} `%F.]|Y0  
Qe]@`Vg  
SortUtil: 1 dI  
QoI@/ jLj  
package org.rut.util.algorithm; :NS;y-{^^y  
MdZ7Yep  
import org.rut.util.algorithm.support.BubbleSort; mNm 8I8  
import org.rut.util.algorithm.support.HeapSort; OsvAm'B  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y( D d7`c  
import org.rut.util.algorithm.support.ImprovedQuickSort; LK/gG6n5M0  
import org.rut.util.algorithm.support.InsertSort; b 3D:w{l  
import org.rut.util.algorithm.support.MergeSort; GEIMCg(TRj  
import org.rut.util.algorithm.support.QuickSort; kB"Sh_:m  
import org.rut.util.algorithm.support.SelectionSort; g8!!:fdu  
import org.rut.util.algorithm.support.ShellSort; QBY7ZT05Gt  
o<@2zhuhrx  
/** 6+m)   
* @author treeroot 8uS1HE\%  
* @since 2006-2-2 NzNAhlXj3  
* @version 1.0 xg\M9&J  
*/ S #&HB  
public class SortUtil { h'w9=Pk~6y  
public final static int INSERT = 1; 8~\Fpz|Og  
public final static int BUBBLE = 2; ANn {*h  
public final static int SELECTION = 3; 7^as~5'&-  
public final static int SHELL = 4; W"VN2  
public final static int QUICK = 5; 44RZk|U1J{  
public final static int IMPROVED_QUICK = 6; mmr>"`5.  
public final static int MERGE = 7; ,LWM}L  
public final static int IMPROVED_MERGE = 8; :h*20iP  
public final static int HEAP = 9; -5kq9Dy\,  
sVaWg?=qs'  
public static void sort(int[] data) { <`*6;j.&  
sort(data, IMPROVED_QUICK); mkrvWZjZX  
} BAg*zYV7  
private static String[] name={ <w.V!"!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |PDuvv!.f  
}; hFj.d]S  
j$&k;S  
private static Sort[] impl=new Sort[]{ 9BNAj-Xa  
new InsertSort(), [WX+/pm7>  
new BubbleSort(), X1#D}  
new SelectionSort(), :14O=C  
new ShellSort(), p5c'gziR  
new QuickSort(), m!N_TOl-^  
new ImprovedQuickSort(), H ,KU!1p  
new MergeSort(), 9"_qa q  
new ImprovedMergeSort(), OQ W#BBet@  
new HeapSort() ~}z p}Pt  
}; B58H7NH ;G  
/Eh\07p  
public static String toString(int algorithm){ )0fQ(3oOg  
return name[algorithm-1]; \*!g0C 8 o  
} "{qhk{  
p^ 9QYR  
public static void sort(int[] data, int algorithm) { JR'Q Th:z  
impl[algorithm-1].sort(data); \TC&/'7}  
} qC.jXU?rO  
;QREwT~H  
public static interface Sort { zu^?9k  
public void sort(int[] data); ?ti7iBz?  
} }9<aX Y,  
eV1O#FLbi  
public static void swap(int[] data, int i, int j) { H:d{Sru  
int temp = data; ` n@[=l~  
data = data[j]; ' OdZ[AN  
data[j] = temp; mL18FR N  
} PIB|&I|p  
} N;Hrc6nin^  
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3+5=?,请输入中文答案:八 正确答案:八