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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。 P>H'od  
插入排序: E,;nx^`!l  
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package org.rut.util.algorithm.support; o)$sZ{` ="  
6l=n&YO  
import org.rut.util.algorithm.SortUtil; ,Ya&M@^Z  
/** jq[>PvR  
* @author treeroot b x@CzXre;  
* @since 2006-2-2 k`?n("j  
* @version 1.0 E?;W@MJi  
*/ ELm#  
public class InsertSort implements SortUtil.Sort{ H=dj\Br`  
8E" .y$AW  
/* (non-Javadoc) }b-?Dm_H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %VdJ<=@  
*/ XdB8Oj~~  
public void sort(int[] data) { A_2ppEG  
int temp; >Nov9<p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N>/U%01a  
} .8,lhcpY  
} 6 2LZ}yn_"  
} 5%Q!R%  
NZl0sX.:  
} G~_dSa@g G  
|HL1.;1  
冒泡排序: ''V:+@Toh  
ut o4bs:  
package org.rut.util.algorithm.support; Di&tm1R1  
O9qEKW)a  
import org.rut.util.algorithm.SortUtil; A5z`3T;1  
`'g%z: ~  
/** WB= gN:?  
* @author treeroot K(_nfE{  
* @since 2006-2-2 :+u?A  
* @version 1.0 )37|rB E  
*/ @)1u  
public class BubbleSort implements SortUtil.Sort{ 5VISP4a  
HK}C<gg  
/* (non-Javadoc) /{Nx%PqL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m:'fk;khN  
*/ 2cww7z/B  
public void sort(int[] data) { E*CY/F I_  
int temp; KF-n_:Bd+  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0"ZRJl<)[I  
if(data[j] SortUtil.swap(data,j,j-1); -{ZRk[>Z  
} .i&]VGv  
} l2$6ojpo  
} R7vO,kZ6Q  
} Wz9 }glr  
oas}8A)  
} Ru2kC} Dx!  
xFgY#F  
选择排序: BaqRAO7  
 Qq>M}  
package org.rut.util.algorithm.support; G !wFG-Y}  
Z:5e:M  
import org.rut.util.algorithm.SortUtil; _%Jqyc"-  
U"/":w ~  
/** hv8V=Z'Q  
* @author treeroot bKiV<&Z5d  
* @since 2006-2-2 W* N^Gp@  
* @version 1.0 85-00m ~  
*/ ,|}Pof=]xk  
public class SelectionSort implements SortUtil.Sort { >=$( ,8"  
;jS~0R  
/* |s=)*DZv  
* (non-Javadoc) KxqJlben  
* 6/ F]ncwG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) um ,Zt  
*/ jgbE@IA@!'  
public void sort(int[] data) { dy`K5lC@  
int temp; $fL2w^ @  
for (int i = 0; i < data.length; i++) { Wu?4oF  
int lowIndex = i; ^GHA,cSf  
for (int j = data.length - 1; j > i; j--) { SBZqO'}7  
if (data[j] < data[lowIndex]) { !3E33  
lowIndex = j; CB:G4VqOT  
} tWT@%(2~0  
} -ich N/U]s  
SortUtil.swap(data,i,lowIndex); ~{/"fTif  
} Z2!O)8  
} `2( )Vf  
?%d]iTZE  
} V]&0"HX2r!  
+a0q?$\  
Shell排序: ef*Vs  
+O8rjVg)  
package org.rut.util.algorithm.support; 5R"iF+p4  
S&^i*R4]  
import org.rut.util.algorithm.SortUtil; ezS@LFaA  
kLtm_  
/** 8 6y)+h`  
* @author treeroot dn!#c=  
* @since 2006-2-2 D;*P'%_Z  
* @version 1.0 jbZ%Y0km%  
*/ `o4alK\  
public class ShellSort implements SortUtil.Sort{ pbJC A&  
dTcrJ|/Y  
/* (non-Javadoc) _!2bZ:emG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bh V.uBH  
*/ EVYICR5g  
public void sort(int[] data) { }RvinF:5  
for(int i=data.length/2;i>2;i/=2){ -!4Mmp"2@u  
for(int j=0;j insertSort(data,j,i); KsVN<eR{  
} U|yXJ.Z3  
} yUd>EnQna  
insertSort(data,0,1); QmxI ;l  
} Pk)>@F<  
;=r_R!d@  
/** awu18(;J  
* @param data 3}hJ`xQ  
* @param j ePLpGT  
* @param i -9)H [}.  
*/ x6N)T4J(  
private void insertSort(int[] data, int start, int inc) { l|{q8i#4V  
int temp; ' ?tx?t  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Qze.1h  
} ;[) O{%s  
} L/*D5k%J  
} FqwH:Fcr:  
;8Qx~:c  
} !pT i.3  
}o,-@R~  
快速排序: 1|bg;X9+  
v0q(k;Ya  
package org.rut.util.algorithm.support; {#U 3A_y  
j;TXZ`|(  
import org.rut.util.algorithm.SortUtil; e)BU6m%  
 :d) y  
/** ag02=}Q'r  
* @author treeroot X\Gbs=sf6  
* @since 2006-2-2 X^o0t^  
* @version 1.0 lD9QS ;  
*/ A  r,fmq  
public class QuickSort implements SortUtil.Sort{ K&'Vd@  
dQljG.PiK  
/* (non-Javadoc) (baBi9<P=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AJYZ`  
*/ [ikW3 '99,  
public void sort(int[] data) { h[(.  
quickSort(data,0,data.length-1); r}nz )=\Cj  
} eXA@J[- M:  
private void quickSort(int[] data,int i,int j){ <rI8O;\H  
int pivotIndex=(i+j)/2; ssY5g !%  
file://swap r7FFZNs!  
SortUtil.swap(data,pivotIndex,j); 328gTP1  
%LjhK,'h  
int k=partition(data,i-1,j,data[j]); iy-~CPNB_  
SortUtil.swap(data,k,j); Um%$TGw5  
if((k-i)>1) quickSort(data,i,k-1); R1?LB"aN  
if((j-k)>1) quickSort(data,k+1,j); h?7@]&VJ  
AFdBf6/" i  
} S; Fj9\2)I  
/** 9f #6Q*/  
* @param data >(He,o@M  
* @param i ~5:-;ZbZ  
* @param j Qv B%X)J  
* @return irooFR[L9  
*/ d$5\{YLy  
private int partition(int[] data, int l, int r,int pivot) { _Gtq]`y  
do{ (@i2a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WH lvd  
SortUtil.swap(data,l,r); 7El:$H  
} M0K+Vz=  
while(l SortUtil.swap(data,l,r); D` abVf  
return l; 5: vy_e&  
} C ^ 1;r9  
pxV@fH+`  
} =bh.V@*  
 2p;N|V  
改进后的快速排序: DAVgP7h'  
3:MAdh[w  
package org.rut.util.algorithm.support; chszP{-@X  
d9pZg=$8  
import org.rut.util.algorithm.SortUtil; wvz_)b N~A  
V9/PkuT  
/** &O\$=&, h  
* @author treeroot z;1qYW[-A  
* @since 2006-2-2 :<PwG]LO  
* @version 1.0 `KHP?lX  
*/ 7q@>d(xho  
public class ImprovedQuickSort implements SortUtil.Sort { )uazB!X  
uTvck6  
private static int MAX_STACK_SIZE=4096; cIOM}/gqv  
private static int THRESHOLD=10; dU.H9\p  
/* (non-Javadoc) '[`pU>9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @f%q ,:  
*/ hx:"'m5  
public void sort(int[] data) { A[Pz&\@  
int[] stack=new int[MAX_STACK_SIZE]; <?Y.w1  
=x-@-\m  
int top=-1; ?X~U[dV?  
int pivot; &- 2i+KjEX  
int pivotIndex,l,r; R6E.C!EI  
|n*<H|  
stack[++top]=0; MB!$s_~o#L  
stack[++top]=data.length-1; $94l('B6H  
uS&NRf9A  
while(top>0){ }1? 2  
int j=stack[top--]; tY0C& u2  
int i=stack[top--]; m8NKuhu  
cRS2v--\-  
pivotIndex=(i+j)/2; +@jX|  
pivot=data[pivotIndex]; eG\`SKx_  
;6/dFOZn  
SortUtil.swap(data,pivotIndex,j); pHv~^L%=  
i5CBLv  
file://partition B,avI&7M;S  
l=i-1; ?)mM]2%%  
r=j; /><+[\q4LM  
do{ [RFF&uy  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); m+'vrxTY  
SortUtil.swap(data,l,r); 6U[bAp  
} " twq#Alx  
while(l SortUtil.swap(data,l,r); $Y&rci]  
SortUtil.swap(data,l,j); vY'E+M"+@  
Ln@n6*%(/  
if((l-i)>THRESHOLD){ V>:ubl8j0l  
stack[++top]=i; mIm.+U`a2  
stack[++top]=l-1; AD4Ot5  
} ?h7(,39^>  
if((j-l)>THRESHOLD){ >uVr;,=y  
stack[++top]=l+1; %:vMD  
stack[++top]=j; 2#t35fU  
} u!DAeE  
9Netnzv%  
} 3PgiV%]  
file://new InsertSort().sort(data); PA<<{\dp  
insertSort(data); 8}<4f|?  
} oRQJ YH  
/** |Y|gT*v  
* @param data t8\XO j  
*/ 1:VbbOu->V  
private void insertSort(int[] data) { ^L +@oS  
int temp; 4Y:[YlfD.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v5`Q7ZZ  
} l4smAT  
} A0`#n|(Ad!  
} WC *e#QP  
wU1h(D2&h  
} ">hOD'PG  
@ZTsl ?  
归并排序: M->$ 'Zgh`  
<Zn -P  
package org.rut.util.algorithm.support; R1lC_G]  
!i77v, (#|  
import org.rut.util.algorithm.SortUtil; ]v,>!~8r  
dyN Kok#  
/** csNB  \  
* @author treeroot bUBQ  
* @since 2006-2-2 U-0A}@N  
* @version 1.0 7GVI={ b  
*/ w!N?:}P<N  
public class MergeSort implements SortUtil.Sort{ =vc8u&L2  
JLFZy\  
/* (non-Javadoc) = gbB)u-Pc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ccx1#^`  
*/ \n`)>-  
public void sort(int[] data) { 1Zj NRg=  
int[] temp=new int[data.length]; !.}ZlA  
mergeSort(data,temp,0,data.length-1); gvl3NQQ%t  
} G378,H  
gV\{Qoj  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;%_s4  
int mid=(l+r)/2; !0k'fYCa  
if(l==r) return ; -=)Al^V4T  
mergeSort(data,temp,l,mid); QaYUcma~n  
mergeSort(data,temp,mid+1,r); r(Vz(  
for(int i=l;i<=r;i++){ LqA&@  
temp=data; A;\1`_i0  
} W-UMX',0zS  
int i1=l; 1#m'u5L  
int i2=mid+1; pi|P&?yw  
for(int cur=l;cur<=r;cur++){ mtunD;_Dek  
if(i1==mid+1) *(>,\8OVf  
data[cur]=temp[i2++]; N(W;\>P  
else if(i2>r) AZgeu$:7p<  
data[cur]=temp[i1++]; _>k&M7OU4  
else if(temp[i1] data[cur]=temp[i1++]; -fm1T|>#  
else xS>d$)rIj  
data[cur]=temp[i2++]; W3.(s~ )o  
} &ap&dM0@%a  
} C ks;f6G  
do$+ Eh  
} :U!@  
c1x{$  
改进后的归并排序: Vw>AD<Rl  
rUL_=>3  
package org.rut.util.algorithm.support; iS]4F_|vd  
4[VW~x07  
import org.rut.util.algorithm.SortUtil; YooP HeQ  
}\$CU N  
/** h%*@82DKK  
* @author treeroot d(X/N2~g  
* @since 2006-2-2 }8e_  
* @version 1.0 a F!Im}  
*/ YQ7\99tj  
public class ImprovedMergeSort implements SortUtil.Sort { )nM<qaI{  
gL(_!mcwu  
private static final int THRESHOLD = 10; 49?wEm#  
yRyUOTK  
/* mQka?_if)  
* (non-Javadoc) k+5l  
* ^1mnw@04  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LyuA("xB#  
*/ Qt+i0xd  
public void sort(int[] data) { 3"O&IY<  
int[] temp=new int[data.length]; Zb4+zps^-  
mergeSort(data,temp,0,data.length-1); F +Dke>j  
} + \jn$>E  
Mc@_[q!xY?  
private void mergeSort(int[] data, int[] temp, int l, int r) { 9pMXjsE   
int i, j, k; `37%|e3bQ  
int mid = (l + r) / 2; 7zcmv"`  
if (l == r) b'1m 9T780  
return; 57jDsQAj  
if ((mid - l) >= THRESHOLD) o5;|14O  
mergeSort(data, temp, l, mid); dIq*"Ry+~  
else !~_6S*~  
insertSort(data, l, mid - l + 1); m8,jVR  
if ((r - mid) > THRESHOLD) qp{3I("_  
mergeSort(data, temp, mid + 1, r); j^)=<+Q;=  
else $g&_7SJ@  
insertSort(data, mid + 1, r - mid); U_C[9Z'P  
9 K~X+N\  
for (i = l; i <= mid; i++) { U: q4OtiP  
temp = data; l[Ko>  
} b`fWT:?=  
for (j = 1; j <= r - mid; j++) { KSve_CBOh  
temp[r - j + 1] = data[j + mid]; o\N^Uu  
} :/\KVz'fw}  
int a = temp[l]; r*kz`cJ  
int b = temp[r]; q"-+`;^7(-  
for (i = l, j = r, k = l; k <= r; k++) { d04fj/B  
if (a < b) { 08_<G`r  
data[k] = temp[i++]; >>T,M@s-:  
a = temp; ?.g="{5X  
} else { /}Ct2w&<k  
data[k] = temp[j--]; X3j|J/  
b = temp[j]; S76x EL  
} Z5`U+ (  
} J?/NJ-F  
} ^0(`:*  
i;<K)5Z  
/** p?#xd!tc2N  
* @param data `,s0^?_  
* @param l $xK(bc'{  
* @param i |]'gd)%S\  
*/ ~)#xOE}  
private void insertSort(int[] data, int start, int len) { hY/i)T{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (G 9Ku 8Y  
} nnuJY$O;M  
} ]htx9ds=  
} kPYQcOK8  
} (Eo#oX  
@#::C@V]  
堆排序: uWkuw5;  
rW[7 _4  
package org.rut.util.algorithm.support; ;5:3 =F>ao  
[(iJj3s!  
import org.rut.util.algorithm.SortUtil; )%bY2 pk  
eo<=Q|nI&  
/** @O| l A  
* @author treeroot fvM|Jb  
* @since 2006-2-2 2l}3L  
* @version 1.0 fH 0&Wc3yC  
*/ 24I~{Qy  
public class HeapSort implements SortUtil.Sort{ \SA$:^zO  
x<>In"QV  
/* (non-Javadoc) 2rqYm6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h"(HDnq  
*/ dUP8[y  
public void sort(int[] data) { aZL FsSY  
MaxHeap h=new MaxHeap(); 6@J)k V  
h.init(data); 0[!38  
for(int i=0;i h.remove(); AjMx\'(C  
System.arraycopy(h.queue,1,data,0,data.length); $-lP"m@}  
} CDGN}Q2_  
J}s)#va9R  
private static class MaxHeap{ ym6gj#2m  
22"/|S  
void init(int[] data){ [ FNA:  
this.queue=new int[data.length+1]; LE@`TPg$R  
for(int i=0;i queue[++size]=data; Y?V>%eBu  
fixUp(size); 3QD##Wr^  
} X] v.Yk=wu  
} |d=MX>i|G  
`+EjmY  
private int size=0; Uv(Uj3D  
qJLtqv  
private int[] queue; 4&^BcWqA*f  
TkV*^j5  
public int get() { &HYs^|ydrr  
return queue[1]; CDgu`jj%]  
} ($Y6hn+  
\F8*HPM=*  
public void remove() { *8j2iu-|  
SortUtil.swap(queue,1,size--); exL<cN  
fixDown(1); w|WehNGr  
} 9|RR;k[  
file://fixdown ]BBL=$*  
private void fixDown(int k) { "+:~#&r  
int j; j?'It`s  
while ((j = k << 1) <= size) { Jp]eFaqp  
if (j < size %26amp;%26amp; queue[j] j++; :,BKB*a\  
if (queue[k]>queue[j]) file://不用交换 Ae 3:"  
break; s7}46\/U  
SortUtil.swap(queue,j,k); A?/(W_Gt^M  
k = j; 8^%Nl `_2B  
} 0N19R5NN8  
} Ff @Cs0R  
private void fixUp(int k) { 9Lv"|S`5W_  
while (k > 1) { +$H`/^a.  
int j = k >> 1; cN\Fgbt  
if (queue[j]>queue[k]) \%+5p"Z<  
break; v\:P _J  
SortUtil.swap(queue,j,k); BR [3i}Ud  
k = j; o7;#B)jWS  
} (5(TbyWwD  
} f]Q`8nU  
!*@sX7H  
} :gJ?3LwTf  
8Mf{6&F=  
} .#[==  
U%nLo[k  
SortUtil: Vy7o}z`  
b qNM  
package org.rut.util.algorithm; @?r[ $Ea1M  
 YXr"  
import org.rut.util.algorithm.support.BubbleSort; QZs ]'*=#  
import org.rut.util.algorithm.support.HeapSort; ^*=.Vuqy  
import org.rut.util.algorithm.support.ImprovedMergeSort; #[C=LGi  
import org.rut.util.algorithm.support.ImprovedQuickSort; kg^VzNX  
import org.rut.util.algorithm.support.InsertSort; wfXm(RYM  
import org.rut.util.algorithm.support.MergeSort; vz-O2B_u  
import org.rut.util.algorithm.support.QuickSort; zZax![Z  
import org.rut.util.algorithm.support.SelectionSort; R#x~f  
import org.rut.util.algorithm.support.ShellSort; F$k^px  
NP#:} )  
/** awic9 uMH  
* @author treeroot ~d072qUos  
* @since 2006-2-2 Lm{qFu  
* @version 1.0 A3 |hFk  
*/ R@8pKCL.  
public class SortUtil { GZwz4=`  
public final static int INSERT = 1; _sGmkJi]  
public final static int BUBBLE = 2; ' M'k$G@Z  
public final static int SELECTION = 3; NM{/rvM  
public final static int SHELL = 4; mhDC1lXF  
public final static int QUICK = 5; Oe["4C  
public final static int IMPROVED_QUICK = 6; 74p=uQ  
public final static int MERGE = 7; /)<x<7FKW  
public final static int IMPROVED_MERGE = 8; G)G 257K"~  
public final static int HEAP = 9; Ey#7L M)  
(rfR:[JkC2  
public static void sort(int[] data) { ac%6eW0#  
sort(data, IMPROVED_QUICK); P< 5v\\  
} Ump$N#  
private static String[] name={ .*Mp+Q}^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0Kytg\p}  
}; IGQcQ/M  
[Ep%9(SgA'  
private static Sort[] impl=new Sort[]{ L<62-+e`  
new InsertSort(), !w;oVPNg  
new BubbleSort(), =+z+`ot  
new SelectionSort(), ]~K&b96(  
new ShellSort(), Id}/(Pkq  
new QuickSort(), rijavZS6  
new ImprovedQuickSort(), Oe~x,=X)  
new MergeSort(), "!w#E6gU  
new ImprovedMergeSort(), @$aGVEcU$  
new HeapSort() o^ zrF  
}; sW^e D;  
!Soz??~o/  
public static String toString(int algorithm){ =f/CBYNw@V  
return name[algorithm-1]; VchI0KL?  
} srCpgs]h  
! *eDT4a  
public static void sort(int[] data, int algorithm) { I?&/J4o:  
impl[algorithm-1].sort(data); 4'wbtE|  
} {)jTq??  
K'_qi8Z  
public static interface Sort { .C*mDi)wZ  
public void sort(int[] data); ~jR4%VF  
} teKx^ 'c'  
U #C@&2  
public static void swap(int[] data, int i, int j) { xWnOOE$i  
int temp = data; cE;n>ta"F  
data = data[j];  mPL0s  
data[j] = temp; xfa-   
} 5MCnGg@  
} ({OQ JBC  
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