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。 jLs-v
插入排序: M6P`~emX2
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package org.rut.util.algorithm.support; ?x(]U+
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import org.rut.util.algorithm.SortUtil; &O5W
/** @sAT#[j
* @author treeroot crt
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* @since 2006-2-2 +JMB98+l
* @version 1.0 $i+
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*/ ni@N/Z?!pA
public class InsertSort implements SortUtil.Sort{ }0P5~]S<5A
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/* (non-Javadoc) xmEmdOoD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #q"^6C
5
*/ KU> $=Rd
public void sort(int[] data) { <"g ^V
int temp; ;oQ*gd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <d GGH
} 1h.N
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} L)cy&"L|
} pUs s_3
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} y-TS?5Dr]
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冒泡排序: rVx%"_'*-
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package org.rut.util.algorithm.support; i%8I (F
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import org.rut.util.algorithm.SortUtil; RY(\/W#$
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/** S'NZb!1+
* @author treeroot X/_e#H0
* @since 2006-2-2 w~eF0{h
* @version 1.0 QGYO{S
*/ 3:f<cy
public class BubbleSort implements SortUtil.Sort{ 3JiJ,<,7
~@x@uY$5
/* (non-Javadoc) %8 )GuxG*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tTT./-*0
*/ ZLBv\VQ
public void sort(int[] data) { )2|'`
int temp; =#AeOqs( q
for(int i=0;i for(int j=data.length-1;j>i;j--){ cvR|qHNX
if(data[j] SortUtil.swap(data,j,j-1); P| o_/BS
} GB1[`U%
} uM\(#jZ
} m/)Wn
} }vRs n-E@
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} bY4~\cP.
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选择排序: sD,[,6(
xD}ha
package org.rut.util.algorithm.support; 2} ,|RQETy
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import org.rut.util.algorithm.SortUtil; ef\Pu\'U
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/** ]>NP?S
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* @author treeroot \dAh^B K1(
* @since 2006-2-2 )&"l3*x
* @version 1.0 K<O1PrC
*/ :"9 :J
public class SelectionSort implements SortUtil.Sort { HL;y5o?
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/* ]VifDFL}
* (non-Javadoc) }|rnyYA
* hKq#i8py
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @'.(62v
*/ M^\#(0^2@
public void sort(int[] data) { Vd2bG4*=
int temp; fZ2>%IxG}
for (int i = 0; i < data.length; i++) { VjbRjn5LI
int lowIndex = i; }ZMbTsm
for (int j = data.length - 1; j > i; j--) { ~7Ey9wRkD
if (data[j] < data[lowIndex]) { aVI/x5p~
lowIndex = j; zPp?D_t
} *]Nd
I
} 7]t$t3I`
SortUtil.swap(data,i,lowIndex); q<L>r?T[
} HtUFl
} };[~>Mzl
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} <KF|QE
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Shell排序: #?)g? u%g=
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package org.rut.util.algorithm.support; F V8K_xj
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import org.rut.util.algorithm.SortUtil; wu5]S)?*
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/** ^EGe%Fq*x]
* @author treeroot _T6l*D
* @since 2006-2-2 QMoh<[3qu
* @version 1.0 [hs_HYqJ
*/ _&TA|Da
public class ShellSort implements SortUtil.Sort{ CeD O:J=,
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w
/* (non-Javadoc) ) -+u8#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?\MvAG7Y
*/ i1]*5;q
public void sort(int[] data) { \2(Uqf#_
for(int i=data.length/2;i>2;i/=2){ (9r\YNK
for(int j=0;j insertSort(data,j,i); "oZ-W?IK E
} l+BJh1^
} R}MdBE
insertSort(data,0,1); 7e\g
} z1t
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/** GAONgz|ZI
* @param data p._BG80
* @param j "'us.t.
* @param i )UA$."~O
*/ 1|)l6#hOL
private void insertSort(int[] data, int start, int inc) { ig(a28%
int temp; B#RwW,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j(4BMk
} "
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} T4,dhS|
} 0 1U/{D6D
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} \}SA{)
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快速排序: )N`a4p
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package org.rut.util.algorithm.support; +}H2|vP
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import org.rut.util.algorithm.SortUtil; }%_h|N
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/** *I)oDq3
* @author treeroot =e'b*KTL,
* @since 2006-2-2 GxWA=Xp^~G
* @version 1.0 = h,6/cs
*/ [03$*BCq 3
public class QuickSort implements SortUtil.Sort{ Pt~mpRlH
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/* (non-Javadoc) f/t1@d!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2P9gS[Ub
*/ '\qd{mM\r
public void sort(int[] data) { M>hHTa?W
quickSort(data,0,data.length-1); ,7:_M>-3g
} =Nn&$h l
private void quickSort(int[] data,int i,int j){ t(69gF\"
int pivotIndex=(i+j)/2; <Cc}MDM604
file://swap (R)\
SortUtil.swap(data,pivotIndex,j);
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?0_Bs4O\
int k=partition(data,i-1,j,data[j]); /fCj;8T3o
SortUtil.swap(data,k,j); B{'x2I#,
if((k-i)>1) quickSort(data,i,k-1); 5y07@x
if((j-k)>1) quickSort(data,k+1,j); g_?:G$1H
@+LkGrDP
} >[TB8
/** RD_IGV
* @param data B9IqX
* @param i E6(OEC%,
* @param j }t!,{ZryE1
* @return ]Igd<
*/ S-{3'D[Nj
private int partition(int[] data, int l, int r,int pivot) { 2_@vSwC
do{ !e?;f=1+E
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8&FnXhZg4
SortUtil.swap(data,l,r); "Ka2jw,
} Qhlgu!
while(l SortUtil.swap(data,l,r);
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return l; MQc|j'vEY
} fpbb <Ro
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} 2Qg.b-C
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改进后的快速排序: ['%]tWT9
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package org.rut.util.algorithm.support; X2b<_j3
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import org.rut.util.algorithm.SortUtil; hhjT{>je
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/** X;JptF^
* @author treeroot '@1o M1
* @since 2006-2-2 %_xRS
* @version 1.0 siveqz6h
*/ :G$f)NMK
public class ImprovedQuickSort implements SortUtil.Sort { =!{7ZSu\
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private static int MAX_STACK_SIZE=4096; # Vz9j
private static int THRESHOLD=10; rjzRZ
/* (non-Javadoc) GKf,1kns
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k(|D0%#b7
*/ 69{^Vfd;Y
public void sort(int[] data) { JjarMJr|D
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; W]Z;=-CBr
int pivot; HO ,z[6
int pivotIndex,l,r; nG<_&h
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stack[++top]=0; IQ_2(8Kv
stack[++top]=data.length-1; _@I<H\^
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while(top>0){ +92/0
int j=stack[top--]; v%O KOrJ
int i=stack[top--]; *nUD6(@g
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pivotIndex=(i+j)/2; 39| W(,
pivot=data[pivotIndex]; ,!U._ic'B
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SortUtil.swap(data,pivotIndex,j); YCvIB'
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file://partition tr 8a_CV
l=i-1; c@d[HstBJ
r=j; 1fBj21zG
do{ 9W3zcL8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5S4kn.3
SortUtil.swap(data,l,r); L{y%\:]
} ETk4I"
while(l SortUtil.swap(data,l,r); ?+-uF}
SortUtil.swap(data,l,j); dh r)ra]
<GoUth.#
if((l-i)>THRESHOLD){
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stack[++top]=i; bt3v`q+V
stack[++top]=l-1; EA.4m3
} LE^kN<qMK
if((j-l)>THRESHOLD){ Fd@n#DR `
stack[++top]=l+1; E ,5XX;|
stack[++top]=j; ut8v&i1?
} ;&B;RUUnTO
c#'t][Ii
} Fj? Q4_
file://new InsertSort().sort(data); -xg$qvK
insertSort(data); ciRn"X=l
} KQ0Zy
/** (]*
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* @param data ?&ie;t<7
*/ +"1@6,M
private void insertSort(int[] data) { LIfQh
int temp; @=CN#D12
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =
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} +]I7]
} ;&mefaFlWp
} y;zp*(}f$h
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} $yG>=GN
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归并排序: ;Fw{p{7<
TEQs\d
package org.rut.util.algorithm.support; lYz{#UX}
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import org.rut.util.algorithm.SortUtil; {%g]Ym=
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/** zN2CI6
* @author treeroot ~qFuS933
* @since 2006-2-2 gaFOm9y.e
* @version 1.0 +T]/4"^M
*/ M7U:UV)
public class MergeSort implements SortUtil.Sort{ [n%=2*1p
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/* (non-Javadoc) Q<4Sd:P`"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^0oOiZs
*/ %K0
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public void sort(int[] data) { TmI~P+5w
int[] temp=new int[data.length]; \F`%vZrKR
mergeSort(data,temp,0,data.length-1); }HdibCAOf
} QD6<sw@]P
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private void mergeSort(int[] data,int[] temp,int l,int r){ h-)tWJ c
int mid=(l+r)/2; 'ii5pxeNI
if(l==r) return ; SUv(MA&
mergeSort(data,temp,l,mid); XcN"orAo
mergeSort(data,temp,mid+1,r); ft |W
for(int i=l;i<=r;i++){ alr'If@7
temp=data; .gZ1}2GF=
} )4h4ql W
int i1=l; mn5y]:;`
int i2=mid+1; Rr>nka)U
for(int cur=l;cur<=r;cur++){ < cNJrer
if(i1==mid+1) Uwj|To&QR
data[cur]=temp[i2++]; Ife/:v
else if(i2>r) D==C"}J
data[cur]=temp[i1++]; 6ZvGD}/
else if(temp[i1] data[cur]=temp[i1++]; o$PY0~#
else |HT5G=dw
data[cur]=temp[i2++]; >;wh0dBe
} o:oQF[TcFO
} ),DLrGOl
@\ udaZc
} o03Y w)*
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改进后的归并排序: ;ZOu-B]q
X
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package org.rut.util.algorithm.support; 4i]h0_]
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import org.rut.util.algorithm.SortUtil; @Z}TF/Rx4
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/**
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* @author treeroot %s&"gWi
* @since 2006-2-2 :v$][jZ2
* @version 1.0 nF"NXYa
*/ 5t=7-
public class ImprovedMergeSort implements SortUtil.Sort { msf%i !
@$G{t^&os
private static final int THRESHOLD = 10; Ms>CO7Nvy
TzSEQS{
/* -] @cUx
* (non-Javadoc) NeI#gJ1A
* HpCTQ\H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ h^ o@=%b
public void sort(int[] data) { 5rX_85 ]
int[] temp=new int[data.length]; |3]#SqX
mergeSort(data,temp,0,data.length-1); #(Xv\OE
} AHB_[i'>7
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private void mergeSort(int[] data, int[] temp, int l, int r) { ro}WBv
int i, j, k; #[odjSb
int mid = (l + r) / 2; $j(laD#AR
if (l == r) ]H {g/C{j
return; QgF2f/;!
if ((mid - l) >= THRESHOLD) #MyF 1E
mergeSort(data, temp, l, mid); 8wH1x
.
else }uFV\1
insertSort(data, l, mid - l + 1); \281X
if ((r - mid) > THRESHOLD) kac-@
mergeSort(data, temp, mid + 1, r); i;l0)q
else DeK&_)g| Z
insertSort(data, mid + 1, r - mid); ->9waXRDz)
tO}Y=kZa{
for (i = l; i <= mid; i++) { NG+%H1!$_
temp = data; }q?*13iy(
} };m.8(}$)
for (j = 1; j <= r - mid; j++) { ^ }k qAmr
temp[r - j + 1] = data[j + mid]; #Fkn-/nL
} G=(ja?d
int a = temp[l]; QHHj.ZY
int b = temp[r]; 3UgPVCT
for (i = l, j = r, k = l; k <= r; k++) { 1sNZl&
if (a < b) { ]K-B#D{P
data[k] = temp[i++]; tBjMm8lgb
a = temp; WupONrH1e
} else { $?*XPzZ
data[k] = temp[j--]; Q $^)z_jai
b = temp[j]; -n"7G%$M
} i|!D
} W.sH
} /Z1>3=G by
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/** {>h,@
* @param data Dzr(Fb
* @param l iezY+`x4
* @param i ?mbI6fYv
*/ *r/o
\pyH
private void insertSort(int[] data, int start, int len) { jBr3Ay@<
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .22}=z
} 'GF <_3I2l
} BK 9+fO
} dF+R
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} mV;)V8'
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堆排序: tGwQUn
f>[!Zi*
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; }JM02R~I
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/** Tqm)- |[
* @author treeroot jRBKy8?[C
* @since 2006-2-2 S<o\.&J
* @version 1.0 \E8CC>Jd
*/ ./_4D}
public class HeapSort implements SortUtil.Sort{ RD6`b_]o
UNCI"Mjb
/* (non-Javadoc) XQStlUw8+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t@cImmh\T
*/ /g\m7m)u
public void sort(int[] data) { !{S HlS
MaxHeap h=new MaxHeap(); &eFv~9
h.init(data); *n*po.Xr
for(int i=0;i h.remove(); {SwvUWOf"
System.arraycopy(h.queue,1,data,0,data.length); *kq>Z 06'i
} 8z`Ne(h;
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private static class MaxHeap{ ;@/vKA3l.
iu+rg(*%
void init(int[] data){ iX6'3\Q3A
this.queue=new int[data.length+1]; #vPf$y6jCI
for(int i=0;i queue[++size]=data; iUOGuiP
fixUp(size); [J6q(}f
} 4*?JU
v
} ^~DClZ
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private int size=0; s}Q*zy
2X`5YN;
private int[] queue; mApl}I
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public int get() { %R-KkK<S
return queue[1]; A08{]E#v>
} KB a
+7$zL;ph=n
public void remove() { e)kVS}e?
SortUtil.swap(queue,1,size--); vFH1hm
fixDown(1); D`@*udn=
} dL|*#e
file://fixdown ='vkd=`Si
private void fixDown(int k) { t4FaU7
int j; 89l{h8R
while ((j = k << 1) <= size) { !--A"
if (j < size %26amp;%26amp; queue[j] j++; 4qg]
oiT
if (queue[k]>queue[j]) file://不用交换 !~a1xI~s
break; 1'YksuYx6f
SortUtil.swap(queue,j,k); $?dutbE
k = j; #RVN7-x
} >@i{8AD
} ">'`{mXew
private void fixUp(int k) { $v~I n
while (k > 1) { tN&_f==e
int j = k >> 1; lPOcX'3\
if (queue[j]>queue[k]) 5 $:
q
break; S#f}mb0,
SortUtil.swap(queue,j,k); ca?;!~%zA
k = j; &46Ro|XE`
} JB(P-Y#yyA
} {,
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} TI^M9;b
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} )@\m0bnF
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SortUtil: YRs32vVz
Wz-7oP%;I
package org.rut.util.algorithm; Q(7M_2e7
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import org.rut.util.algorithm.support.BubbleSort; @Yy']!Ju
import org.rut.util.algorithm.support.HeapSort; t9+ME|
import org.rut.util.algorithm.support.ImprovedMergeSort; r-IG.ym3
import org.rut.util.algorithm.support.ImprovedQuickSort; *u?N{LkqS
import org.rut.util.algorithm.support.InsertSort; /6d:l>4
import org.rut.util.algorithm.support.MergeSort; >2@ a\
import org.rut.util.algorithm.support.QuickSort; ;OY*`(Id
import org.rut.util.algorithm.support.SelectionSort; N77EM
import org.rut.util.algorithm.support.ShellSort; $][$ e
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/** "
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* @author treeroot +Rb0:r>kU
* @since 2006-2-2 aIW W[xZ
* @version 1.0 P},d`4Ty@
*/ {fAj*,pzl
public class SortUtil { fY{&W@#g
public final static int INSERT = 1; 'k9dN
\ev
public final static int BUBBLE = 2; (b4;c=<[{
public final static int SELECTION = 3; @gHWU>k,A
public final static int SHELL = 4; - |j4u#z
public final static int QUICK = 5; TWk1`1|
public final static int IMPROVED_QUICK = 6; kG70j{gf
public final static int MERGE = 7; [t}$W*hY
public final static int IMPROVED_MERGE = 8; okv`v
({
public final static int HEAP = 9; Fu6~8uDV{{
CxW-lU3G`
public static void sort(int[] data) { 7d"gRM;
sort(data, IMPROVED_QUICK); 3^J~ts{*
} 1E|~;wo\
private static String[] name={ hY-;Vh0J
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" LAfv1
}; c
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|jwN8@
private static Sort[] impl=new Sort[]{ E]26a,^L
new InsertSort(), XI*cu\7sy
new BubbleSort(), 6fr@y=s2:
new SelectionSort(), Bm&% N?9
new ShellSort(), S|HnmkV66
new QuickSort(), ZQQ0}
new ImprovedQuickSort(), Rr0@F`"R
new MergeSort(), A/+bwCDP
new ImprovedMergeSort(), HLml:B[F(
new HeapSort() O.g!k"nas&
}; Jf|6 FQo&
fR6.:7&
public static String toString(int algorithm){ DHnu F@M
return name[algorithm-1]; {f
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} 9V5d=^
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public static void sort(int[] data, int algorithm) { TaN]{k
impl[algorithm-1].sort(data); -g;cg7O#(
} a6&+>\o
K@UQ O
public static interface Sort { s wIJmA
public void sort(int[] data); KL}o%wfLy
} Im* ~6[
Z<,$XvL
public static void swap(int[] data, int i, int j) { ?U;KwS]%
int temp = data; D+"-(k
data = data[j]; ' QrvkQ
data[j] = temp; [c=T)]E1
} ].C4RH
} Q-:IE
T