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。 b%Eei2Gm%
插入排序: BY]i;GVq
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package org.rut.util.algorithm.support; YQS5P#
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import org.rut.util.algorithm.SortUtil; z-c}NdW
/** N72Yq)(
* @author treeroot L=8+_0
* @since 2006-2-2 ?Q72 ;/$
* @version 1.0 i:l<C
*/ ":nQgV\9
public class InsertSort implements SortUtil.Sort{ $*W6A/%O
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/* (non-Javadoc) _fwb!T}$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h/,${,}J
*/ JO@|*/mL
public void sort(int[] data) { LE%7DW(
int temp; ,<Q~b%(3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SKW%X8
} -D^}S"'
} Kb^>-[Yx
} >[1W:KQA
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} ZoB{x*IH
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冒泡排序: NzW`B^p
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package org.rut.util.algorithm.support; /CIh2
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import org.rut.util.algorithm.SortUtil; g%k`
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/** ILic.@st
* @author treeroot GAc{l=vT'
* @since 2006-2-2 0W%@gs5d&
* @version 1.0 @p|$/Z%R,
*/ F]I=+T
public class BubbleSort implements SortUtil.Sort{ $.:mai
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/* (non-Javadoc) X.TI>90{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nJbbzQ,e
*/ -`Y:~q1
public void sort(int[] data) { \-*eL;qP
int temp; wI5Yn
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for(int i=0;i for(int j=data.length-1;j>i;j--){ YQ0)5 }
if(data[j] SortUtil.swap(data,j,j-1); |~
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} ^bLRVp1
} 8_!.!Kde |
} v{<[)cr
} u(!&:A9JFd
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} ]LZ`LL'#Y_
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选择排序: o-cAG{.WC
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package org.rut.util.algorithm.support; J/6`oh?,Q
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import org.rut.util.algorithm.SortUtil; ph2$oO
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/** &Sp -w?kM
* @author treeroot nPUqMn'
* @since 2006-2-2 {>bW>RO)
* @version 1.0 ="d*E/##
*/ 5%}wV,Y
public class SelectionSort implements SortUtil.Sort { j:bgR8%e
! <WBCclX
/* |/ }\6L]
* (non-Javadoc) y3<Y?M4
* 1h7+@#<:a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]/cd;u
*/ vOgC>_x7
public void sort(int[] data) { b|5w]<?'
int temp; j(#%tIv
for (int i = 0; i < data.length; i++) { z* <y5
int lowIndex = i; |p00j|k
for (int j = data.length - 1; j > i; j--) { Yif*"oO
if (data[j] < data[lowIndex]) { :h,`8 Di
lowIndex = j; ^JR;epVJ
} A%\tiZe
} J`*iZvW#Bx
SortUtil.swap(data,i,lowIndex); Q# ?wXX47
} M=]5WZO~A
} X_$a,"'~)
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} ~np,_yI
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Shell排序: =IKEb#R/
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package org.rut.util.algorithm.support; Yct5V,X^
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import org.rut.util.algorithm.SortUtil; MEiRj]t
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/** B%\g kl
* @author treeroot 5HS~op2n/
* @since 2006-2-2 q*)+K9LRk
* @version 1.0 rbqo"g`
*/ ,L OQDIyn
public class ShellSort implements SortUtil.Sort{ N]YtLa,t
J g$xO@.
/* (non-Javadoc) Ei({`^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 23DJV);g8
*/ s0hBbL0DH
public void sort(int[] data) { ;o<m}bGaT
for(int i=data.length/2;i>2;i/=2){ Tx%VU8\?n
for(int j=0;j insertSort(data,j,i); b @;.F!x
} pe&UQ C^
} 2yo
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insertSort(data,0,1); :1)DqoAJ
} O''y>N9
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/** W2wpcc
* @param data 4O{Avt7C
* @param j nkeI60
* @param i B
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*/ cyd~2\Kv~
private void insertSort(int[] data, int start, int inc) { qO`qJ/
int temp; C0x"pO7
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /OGA$eP
} 9x`4RE
} iz"3\{aN
} (!?K7<Jv
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} IJU0[EA]F
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快速排序: R
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qI3NkVA'C
package org.rut.util.algorithm.support; G6`J1Uk
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import org.rut.util.algorithm.SortUtil; +K6szGP
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/** dX
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* @author treeroot /2NSZO
* @since 2006-2-2 s.jO<{
* @version 1.0 ,7d|O}B
*/ G\iyJSj[P
public class QuickSort implements SortUtil.Sort{ G{
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/* (non-Javadoc) `3iQZui
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1x >iz
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*/ KhM.Tc
public void sort(int[] data) { q9}m!*8e
quickSort(data,0,data.length-1); eK`PxoTI-I
} ,|To#umym>
private void quickSort(int[] data,int i,int j){ .\5$MIF
int pivotIndex=(i+j)/2; (%<' A
file://swap ]re'LC!d
SortUtil.swap(data,pivotIndex,j); %c6E-4b
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qp
int k=partition(data,i-1,j,data[j]); G5'_a$
SortUtil.swap(data,k,j); W."f8ow
if((k-i)>1) quickSort(data,i,k-1); fUcLfnr
if((j-k)>1) quickSort(data,k+1,j); d34Y'r
@Z\~
} S]2 {ZDP
/** H}b\`N[nr
* @param data (a{ZJI8_
* @param i NW.XA! =E)
* @param j
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* @return hG Apuy
*/ M$&>5n7
private int partition(int[] data, int l, int r,int pivot) { #s+X+fe
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YL5>V$i
SortUtil.swap(data,l,r); y@apJ;_R-
} v:d9o.h
while(l SortUtil.swap(data,l,r); Q~
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return l; Gq]d:-7l
} ]h~o],:
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} ^9ng)
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改进后的快速排序: 7U:=~7GH
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package org.rut.util.algorithm.support; ,d
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import org.rut.util.algorithm.SortUtil; ^g!B.ll`
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/** :)P<jX-G
* @author treeroot ,$Tk$
* @since 2006-2-2 Vm!i
* @version 1.0 eoJ]4-WFq
*/ \p6 }
public class ImprovedQuickSort implements SortUtil.Sort { v["3
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private static int MAX_STACK_SIZE=4096; .s};F/(diD
private static int THRESHOLD=10; dERc}oAh(
/* (non-Javadoc) * bZ\@Qm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #AncOo
*/ zrx JN
public void sort(int[] data) { *]{=8zc2
int[] stack=new int[MAX_STACK_SIZE]; EUwQIA2c8N
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int top=-1; }[,3yfiX
int pivot; R`Qpd3
int pivotIndex,l,r; sx-F8:Qa
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stack[++top]=0; ahp1!=Z-=
stack[++top]=data.length-1; u33zceE8
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while(top>0){ J~dTVBx
int j=stack[top--]; o>!JrH
int i=stack[top--]; N5\{yV21",
#Wx=v$"
pivotIndex=(i+j)/2; nW&$~d
pivot=data[pivotIndex]; rv?!y8\
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SortUtil.swap(data,pivotIndex,j); vPsq<l}
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file://partition #{w5)|S#JD
l=i-1; (C~dkR?
r=j; A\C'dZ <N
do{ -kc(u1!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Dqr9Vv
SortUtil.swap(data,l,r); q
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} Nu+wL>t
while(l SortUtil.swap(data,l,r); f+^c@0que
SortUtil.swap(data,l,j); .Qk{5=l6P
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if((l-i)>THRESHOLD){ acP
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stack[++top]=i; !VNbj\Bp
stack[++top]=l-1; t
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} iUCwKpb9
if((j-l)>THRESHOLD){ 54wM8'+
stack[++top]=l+1; '^B3pR:
stack[++top]=j; i;avwP<0
} O,]_ tp
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} V7n >,k5
file://new InsertSort().sort(data); &@"w-M
insertSort(data); L"9 Gc
} b_l.QKk
/** PAr|1i)mB
* @param data #!Ze\fOC
*/ mf~Lzp
private void insertSort(int[] data) { X,&xhSzg?
int temp; Q~h6J*
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hOl=W |)v
} XX:q|?6_ 4
} 9Yd-m
} 6_Fpca3L
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} 8`DO[Z
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归并排序: L[1d&d!p
(}6wAfGo
package org.rut.util.algorithm.support; z6Fun
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import org.rut.util.algorithm.SortUtil; z,M'Tr.1|
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/** z?I+u*rF6
* @author treeroot N: A3kp
* @since 2006-2-2 l~ CZW*/
* @version 1.0 $e>/?Ss
*/ xa'
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public class MergeSort implements SortUtil.Sort{ Euqjxz
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/* (non-Javadoc) M9h<}mh\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a (P^e)<
*/ dG"K/|
public void sort(int[] data) { 3.B4(9:>,
int[] temp=new int[data.length]; K*0aXr?
mergeSort(data,temp,0,data.length-1); d\\r_bGW
} 7N!tp,?
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private void mergeSort(int[] data,int[] temp,int l,int r){ =rtS#u
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int mid=(l+r)/2; s bs[=LW4
if(l==r) return ; -*rHB&e
mergeSort(data,temp,l,mid); RfD{g"]y
mergeSort(data,temp,mid+1,r); /rn"
for(int i=l;i<=r;i++){ :
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temp=data; u,:CJ[3
} m*\B2\2gJ
int i1=l; Cc@=?
int i2=mid+1; ,LoMt ]H
for(int cur=l;cur<=r;cur++){ @gH(/pFX
if(i1==mid+1) <Z2(qZ^Z
data[cur]=temp[i2++]; =fL6uFmxI@
else if(i2>r) aytq4Ts
data[cur]=temp[i1++]; ,}eRnl\
else if(temp[i1] data[cur]=temp[i1++]; @47[vhE
else 0m]~J_
data[cur]=temp[i2++]; tniPEmeS
} 9Q,Msl4n
} [q|?f?Zl
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} Uc_'3|e
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改进后的归并排序: c-[Q,c
b24NL'jm
package org.rut.util.algorithm.support; b*btkaVue
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import org.rut.util.algorithm.SortUtil; -}=@
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/** 3*CzXK>`M&
* @author treeroot V}vl2o
* @since 2006-2-2 N>uA|<b,
* @version 1.0 8O"x;3I9
*/ 0ClX
public class ImprovedMergeSort implements SortUtil.Sort { H arFo
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private static final int THRESHOLD = 10; +O;OSZ
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/* a)I=U[
* (non-Javadoc) R=][>\7]}
* nu\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zp/qs
z(]
*/ D=i0e8D!+
public void sort(int[] data) { \SYPu,ZT
int[] temp=new int[data.length]; Ma`
mergeSort(data,temp,0,data.length-1); xTa4.ZXg
} F'V+2,.
^
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private void mergeSort(int[] data, int[] temp, int l, int r) { 9s;!iDFn
int i, j, k; 7i-W*Mb:
int mid = (l + r) / 2; U6/m_`nc
if (l == r) Ff)~clIK '
return; ?=/}Ft
if ((mid - l) >= THRESHOLD) A^T~@AO
mergeSort(data, temp, l, mid); m~= ]^e
else $Nt=gSWw5
insertSort(data, l, mid - l + 1); WU+Jo@]y
if ((r - mid) > THRESHOLD) *3w/`R<\
mergeSort(data, temp, mid + 1, r); Z4wrXss~
else >.!5M L\
insertSort(data, mid + 1, r - mid); <2o.,2?G
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for (i = l; i <= mid; i++) { buq *abON
temp = data; Q70**qm
} zVc7q7E
for (j = 1; j <= r - mid; j++) { eI/\I:G{f
temp[r - j + 1] = data[j + mid]; ;y?D1o^r8W
} giPhW>
int a = temp[l]; jza}-=&+e
int b = temp[r]; i(&6ys5
for (i = l, j = r, k = l; k <= r; k++) { j{7ilo(i
if (a < b) { 6g~o3
data[k] = temp[i++]; i-i}`oN
a = temp; |mQtjo
} else { t[f9Z
data[k] = temp[j--]; {.' ,%)
b = temp[j]; ,<^tsCI
} 4t%:O4
3e
} t]u(jX)
} 7tf81*e
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/** bgzT3KZ
* @param data wH(vX<W-E
* @param l Rktn/Vi
* @param i Dvq*XI5
*/ ?|Q5]rhs
private void insertSort(int[] data, int start, int len) { XW&8T"q7
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); RIVL 0Ig
} +>i<sk
} #v~S",*.f
} o$H Jg
} v'bd.eqw
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堆排序: 08K.\3
9
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package org.rut.util.algorithm.support; } TX'Z?Lq
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import org.rut.util.algorithm.SortUtil; +,F=
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/** gGiV1jN_
* @author treeroot BJO~$/R?v
* @since 2006-2-2 r"u(!~R
* @version 1.0 Cs1%g
*/ .2{C29g
public class HeapSort implements SortUtil.Sort{ s:jL/%+COZ
vVAZSR#
/* (non-Javadoc) m)[wZP*e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QkCoW[sn
*/ *p#YK|
public void sort(int[] data) { XvzV
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MaxHeap h=new MaxHeap(); ?/l}(t$H
h.init(data); #Zavdkw=d
for(int i=0;i h.remove(); /4-eoTxy
System.arraycopy(h.queue,1,data,0,data.length); c@o/Cv
} /P8eI3R
i:Z.;z$1
private static class MaxHeap{ QhE("}1
rD(ep~^M
void init(int[] data){ xU\:Vid+A
this.queue=new int[data.length+1]; 1O3<%T#LOZ
for(int i=0;i queue[++size]=data; c;|&>Fp
fixUp(size); pqQdr-aR=
} <>*''^
} 9
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private int size=0; W}e[.iX;
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private int[] queue; C O%O<_C
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public int get() { RH'F<!p
return queue[1]; *(SBl}f4l
} :jKXKY+T
z`r4edk3
public void remove() { *}iT6OJ
SortUtil.swap(queue,1,size--); Wn,g!rB^@
fixDown(1); |C2.Zay
} CIik@O*
file://fixdown ;,B@84'
private void fixDown(int k) { +zdq+<9X
int j; piiQ
while ((j = k << 1) <= size) { 98%tws`
if (j < size %26amp;%26amp; queue[j] j++; ?xTeio44
if (queue[k]>queue[j]) file://不用交换 >'1Q"$;
break; -WW!V(~p
SortUtil.swap(queue,j,k); q!oZ; $
k = j; 4#7@KhK}
} NW>:Lz
?"
} 08jUVHdt
private void fixUp(int k) { K{w=qJBM
while (k > 1) { k;:u| s8NS
int j = k >> 1; 36Z`.E>~L
if (queue[j]>queue[k]) ^nm!NL{z^
break; Boj{+rE0
SortUtil.swap(queue,j,k); owY_cDzrH
k = j; }?q nwx.
} mlw BATi
} 3]]6z K^i
Lp]C![\>U
} 3^-)gK
y $DB
} vls> 6h
Rw=E_q{
SortUtil: 'nDT.i
Gc!{%x
package org.rut.util.algorithm;
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_C8LK.M#j
import org.rut.util.algorithm.support.BubbleSort; (X7yNIPfA
import org.rut.util.algorithm.support.HeapSort; Ay6rUN1ef
import org.rut.util.algorithm.support.ImprovedMergeSort; sF3
l##Wv
import org.rut.util.algorithm.support.ImprovedQuickSort; 3Co>3d_
import org.rut.util.algorithm.support.InsertSort; k'q
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import org.rut.util.algorithm.support.MergeSort; l45F*v]^
import org.rut.util.algorithm.support.QuickSort; b2f2WY |z>
import org.rut.util.algorithm.support.SelectionSort; Fl>j5[kLZ
import org.rut.util.algorithm.support.ShellSort; td$6:)
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/** %|* y/m
* @author treeroot #YVDOR{z
* @since 2006-2-2 1;[
<||K
* @version 1.0 '0M0F'R
*/ juYt =
public class SortUtil { 61wG:
public final static int INSERT = 1; uOUw8
public final static int BUBBLE = 2; 2}\sj'0&
public final static int SELECTION = 3; ^B=z_0 *
public final static int SHELL = 4; (y4Eq*n%!
public final static int QUICK = 5; cW/~4.v$
public final static int IMPROVED_QUICK = 6; rtOW-cz
public final static int MERGE = 7; p
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public final static int IMPROVED_MERGE = 8; Y tj>U
public final static int HEAP = 9; ]
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public static void sort(int[] data) { yXl.Gq>]{
sort(data, IMPROVED_QUICK); s/^=WV
} DYk->)
private static String[] name={ /38Pp%
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" UiN ^x
}; by ee-BU
F+-MafN7Y
private static Sort[] impl=new Sort[]{ 2p.+C35c=j
new InsertSort(), 8>+eGz|
new BubbleSort(), dM.Ow!j
new SelectionSort(), $4)guG)
new ShellSort(), EHJc*WFPU-
new QuickSort(), Qn cS&
new ImprovedQuickSort(), E0Xu9IW/A
new MergeSort(), >(Ddw N9l
new ImprovedMergeSort(), jXva?_
new HeapSort() gz:c_HJ
}; mM~Q!`Nf.
n!orM5=:O
public static String toString(int algorithm){ Y(mwJud|
return name[algorithm-1]; UM^hF%
} iU|C<A%Hh
w5R9\<3L
public static void sort(int[] data, int algorithm) { ;yoq/
impl[algorithm-1].sort(data); r2`?Ta
} aq**w?l
TK1MmL
public static interface Sort { R
dzIb-
public void sort(int[] data); %j`]x
-aOz
} |'(IWU
cv&hT.1
public static void swap(int[] data, int i, int j) { _+7f+eB
int temp = data; ~_6rD`2cJ
data = data[j]; R|yTUGY
data[j] = temp; cZi&L p
} artS*fv3r
} N4FG_N