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。 &/s~? Iq
插入排序: S8O)/Sg=
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package org.rut.util.algorithm.support; 7p)N_cJD
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import org.rut.util.algorithm.SortUtil; 9nn>O?
/** bvl~[p$W3
* @author treeroot $^}[g9]1
* @since 2006-2-2
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* @version 1.0 f
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*/ 'pan9PW
public class InsertSort implements SortUtil.Sort{ XwcMt r*
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/* (non-Javadoc) G%a] j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i{8]'fM
*/ ql^g~b
public void sort(int[] data) { R
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int temp;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @]f3|>I
} u7HvdLql
} "2a$1Wmj(
} %yp5DD}|
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} CoU3S,;*
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冒泡排序: ;SgD 5Ln}
i;c'P}[K
package org.rut.util.algorithm.support; Pg/T^n&
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import org.rut.util.algorithm.SortUtil; %`#G92Z_
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/** t9.,/o,
* @author treeroot OB~C} '^$
* @since 2006-2-2 P/ci/y_1
* @version 1.0 GuT6K}~|D
*/ X~lZ OVmS
public class BubbleSort implements SortUtil.Sort{ @g4Shlx|
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/* (non-Javadoc) )!e3.C|V1W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 ~~qAoD
*/ }|Uj"e
public void sort(int[] data) { t05_Px!mW
int temp; Z==!C=SBv
for(int i=0;i for(int j=data.length-1;j>i;j--){ GM](=|F
if(data[j] SortUtil.swap(data,j,j-1); M#xQW`-`
} 1Ao6y.S
} .d~\Ysve
} )GVBE%!WEd
} Sk\n;mL:
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} 7rcA[)<'
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选择排序: iU5P$7.p
y}N&/}M:}8
package org.rut.util.algorithm.support; Q&xjF@I
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import org.rut.util.algorithm.SortUtil; ;WD,x:>blO
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/** w$j{Hp6m
* @author treeroot d ;^
* @since 2006-2-2 ~.Cv
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* @version 1.0 w9f
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*/ gfde#T)S
public class SelectionSort implements SortUtil.Sort { ,}0$Tv\1
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/* *YtB )6j
* (non-Javadoc) }_}KVI
* t0Zk-/s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BC! 6O/kr
*/ D9BQID$R
public void sort(int[] data) { _ 5"+Dv
int temp; qZ*f%L(
for (int i = 0; i < data.length; i++) { +~Tu0?{Z 0
int lowIndex = i; )JhT1j Qc
for (int j = data.length - 1; j > i; j--) { -#.< 12M
if (data[j] < data[lowIndex]) { nO{ x^b <
lowIndex = j; nA_%2F'W}
} {,?ss$L
} iA'As%S1
SortUtil.swap(data,i,lowIndex); bb;(gK;F
} bO3GVc+S
} ~~nqU pK?v
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} h/2/vBs
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Shell排序:
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GqLq gns
package org.rut.util.algorithm.support; r\2vl8X~
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import org.rut.util.algorithm.SortUtil; 2q PhLCeZ
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/** 2-dh;[4
* @author treeroot +q{[\#t5
* @since 2006-2-2 Vr=OYI'A
* @version 1.0 PD6_)PXn
*/ c8Z A5|
public class ShellSort implements SortUtil.Sort{ Qz,|mo+
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/* (non-Javadoc) Gb2L }
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4^*,jS-9g}
*/ *k [J6
public void sort(int[] data) { yZCX S
for(int i=data.length/2;i>2;i/=2){ &Z;_TN9[
for(int j=0;j insertSort(data,j,i); T95t"g?p
} :Q_3hK
} %S@L|t
insertSort(data,0,1); tY+$$GSQj
} vXv;1T
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/** ]$A(9Pn"
* @param data ~#PLAP3-
* @param j IP3E9z_L
* @param i XNehPZYS
*/ GZ3 ]N
private void insertSort(int[] data, int start, int inc) { mchJmZ{A
int temp; }Fa%%}
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J?&l*_m;t
} 5~H#(d<oZ
} ZmEEj-*7s
} S6xgiem
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} ZU{4lhe
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快速排序: =*Z5!W'd
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package org.rut.util.algorithm.support; H8{ol6wc)6
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import org.rut.util.algorithm.SortUtil; ["3\eFg
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/** IiJZ5'{
* @author treeroot lg$zGa?
* @since 2006-2-2
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* @version 1.0 z>m=h)9d~
*/ P7.' kX9
public class QuickSort implements SortUtil.Sort{ ^oM|<";!?D
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/* (non-Javadoc) r'GP$0rr9!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U{@5*4
*/ T/1gI9X
public void sort(int[] data) {
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quickSort(data,0,data.length-1); pkgjTXR2b
} lIRlMLuG
private void quickSort(int[] data,int i,int j){ |7k_N|E
int pivotIndex=(i+j)/2; =elpH^N
file://swap ZcJ\ZbE|
SortUtil.swap(data,pivotIndex,j); hk[
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int k=partition(data,i-1,j,data[j]); r^Zg-|gr
SortUtil.swap(data,k,j); Ztr Cv?
if((k-i)>1) quickSort(data,i,k-1); _hu")os
if((j-k)>1) quickSort(data,k+1,j); TZR)C P5
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} Az;t"
/** @p 6<Lw_E
* @param data kM8{Cw
* @param i v\tEVhm
* @param j g%[c<l9
* @return #_93f
|
*/ G<|8?6bq#
private int partition(int[] data, int l, int r,int pivot) { @#g<IBG=*
do{ v59dh (:`Z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @.Icz
SortUtil.swap(data,l,r); 1KM`i
} ^(HUGl_
while(l SortUtil.swap(data,l,r); aJ") <_+
return l; ~*A8+@\R
} 4)|8Eu[p7
phnV7D(E
} VHJM*&5
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改进后的快速排序: 5,-U.B}
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package org.rut.util.algorithm.support; ,'xYlH3s
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import org.rut.util.algorithm.SortUtil; L>yJ
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/** x^4xq#Bb7
* @author treeroot t3(]YgF
* @since 2006-2-2 '(bgs
* @version 1.0 ?T9(Vw
*/ (3J$>Na
public class ImprovedQuickSort implements SortUtil.Sort { Szbb_i{_
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private static int MAX_STACK_SIZE=4096; Qham^
private static int THRESHOLD=10; tg]x0#@s
/* (non-Javadoc) 26&'X+n&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l&iq5}[n&
*/ s7Ub@
public void sort(int[] data) { n8*;lK8
int[] stack=new int[MAX_STACK_SIZE]; "j;4
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int top=-1; /x_o!<M
int pivot; <:SZAAoIV
int pivotIndex,l,r; ={K`4BD
'Vyt4^$%
stack[++top]=0; 1%4sHSN
stack[++top]=data.length-1; Tq]Sn]CSP
=jB08A
while(top>0){ wr[,
int j=stack[top--]; At7>V-f}
int i=stack[top--]; &l3iV88
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pivotIndex=(i+j)/2; KMI_zhyB
pivot=data[pivotIndex]; z!l.:F
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SortUtil.swap(data,pivotIndex,j); &?mD$Eo
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file://partition ,lZB96r0
l=i-1; ,Ax dCT
r=j; _%5Ro6
do{ ]]Cb$$Td
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O8B\{T1
SortUtil.swap(data,l,r); &f^, la
} =-IbS}3
while(l SortUtil.swap(data,l,r); yzqVz_Fi*W
SortUtil.swap(data,l,j); H&:jcgV*P
{
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if((l-i)>THRESHOLD){ su*'d:L
stack[++top]=i; %Ev4]}2C1
stack[++top]=l-1; tmQH|'>>
} 87D*-Gw
if((j-l)>THRESHOLD){ /YZr~|65
stack[++top]=l+1; E\Rhz]G(
stack[++top]=j; x>Zn?YR,"
} NR`C(^}
{zMU#=EC
} W[Ls|<Q
file://new InsertSort().sort(data); {phNds%
insertSort(data); e" St_z(
} j'A_'g'^
/** dBz/7&Q
* @param data 7=;R& mqC
*/ D9
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private void insertSort(int[] data) { :]\([Q+a
int temp; eEuvl`&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <StN%2WQ1
} "wNJ
} Zl^\Q=*s
} Tj:B!>>
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} DGS $Ukz&T
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归并排序: 6}d.5^7lr
wne,e's}
package org.rut.util.algorithm.support; a{L
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import org.rut.util.algorithm.SortUtil; '<"s \,
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/** %J+E/
* @author treeroot 3kybLOG
* @since 2006-2-2 )h7<?@wv&
* @version 1.0 e )d`pQ6
*/ <J)]mh dm
public class MergeSort implements SortUtil.Sort{ '@_d(N1jTw
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/* (non-Javadoc) nAv#?1cjz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U/!TKic+
*/ 37s0e;aF
public void sort(int[] data) { ,J+}rPe"sf
int[] temp=new int[data.length]; 'uBu6G
mergeSort(data,temp,0,data.length-1); ,U2*FZ["
} 'Gj3:-xqL
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private void mergeSort(int[] data,int[] temp,int l,int r){ RoPRQCE
int mid=(l+r)/2; 3}}38A|4
if(l==r) return ; ~E17L]ete
mergeSort(data,temp,l,mid); 6 (]Dh;gC
mergeSort(data,temp,mid+1,r); e"|efE
for(int i=l;i<=r;i++){ KVclhT<F
temp=data; VK m&iidU
} '=b/6@&
int i1=l; 0Tx6zO
int i2=mid+1; qLD
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for(int cur=l;cur<=r;cur++){ Q'=x|K#xj
if(i1==mid+1) *\
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data[cur]=temp[i2++]; X%
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else if(i2>r) T&6l$1J
data[cur]=temp[i1++]; |fK1/<sz#
else if(temp[i1] data[cur]=temp[i1++]; Te"ioU?.
else GS$ifv
data[cur]=temp[i2++]; Tp/6,EE
} v[1aWv:
} !>FYK}c7
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} >qnko9 V
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改进后的归并排序: d;boIP`M;
xF!,IKlBBp
package org.rut.util.algorithm.support; LSL/ZvSP
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import org.rut.util.algorithm.SortUtil; =$'6(aDH
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/** ldU?{o:\s
* @author treeroot 0"<H;7K#W
* @since 2006-2-2 p`olCp'
* @version 1.0 ZMQZs~;~d
*/ .*OdqLz
public class ImprovedMergeSort implements SortUtil.Sort { wr$("A(
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private static final int THRESHOLD = 10; ,wQ5.U,
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/* 'j#*6xD
* (non-Javadoc) , qMzWa
* fK>L!=Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9+Np4i@
*/ Cio
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public void sort(int[] data) { R@1 xt@?
int[] temp=new int[data.length]; luh$2 \5B
mergeSort(data,temp,0,data.length-1); }T(D7|^R
} UXJeAE-
}bb;~
private void mergeSort(int[] data, int[] temp, int l, int r) { {'7B6
int i, j, k; - YEZ]:"
int mid = (l + r) / 2; G/)O@Ugp
if (l == r) xQ f*
return; BtkOnbz8X
if ((mid - l) >= THRESHOLD) Ua:}V n&!
mergeSort(data, temp, l, mid); ^UP`%egR
else &GpRI(OB/+
insertSort(data, l, mid - l + 1); P78g/p T
if ((r - mid) > THRESHOLD) 9 P l
mergeSort(data, temp, mid + 1, r); 94'&b=5+
else y6(Z`lx
insertSort(data, mid + 1, r - mid); u|\1hLXX
3#LlDC_WC
for (i = l; i <= mid; i++) { %z=le7
temp = data; E>6MeO
} zVViLUwG
for (j = 1; j <= r - mid; j++) { 5%Y3 Kwyy
temp[r - j + 1] = data[j + mid]; {&&z-^
} ?g_3 [Fk
int a = temp[l]; W: z6Koc0
int b = temp[r]; =Qy<GeY
for (i = l, j = r, k = l; k <= r; k++) { \j$&DCv
if (a < b) { G<L;4nA)
data[k] = temp[i++]; yuh *
a = temp; ik)|{%!K]H
} else { X]ipI$'+C
data[k] = temp[j--]; ?qb}?&1
b = temp[j]; 2=*H 8'k
} OAgniLv
} wW Lj?;bx
} 6fkRrD
U7?;UCmX
/** xK>*yV
* @param data ^
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* @param l )*u8/U
* @param i `}p0VmD{NE
*/ 7y.kQI?3
private void insertSort(int[] data, int start, int len) { iDpSj!x/_
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z<MsKD0Q
} 9Gvd&U
} [*Z;\5&P
} = }~hWL
} +Q/R{#O
=O~_Q-
堆排序: 4S7v:1~xe
J"0`%'*/
package org.rut.util.algorithm.support; Sh/08+@+L:
Lc}y<=P@
import org.rut.util.algorithm.SortUtil; 0HZ{Y9]
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/** FnwJ+GTu
* @author treeroot i}cRi&2[
* @since 2006-2-2 ncaT?~u j
* @version 1.0 atj(eg
*/ u^&^UxCA
public class HeapSort implements SortUtil.Sort{ y5vvu>nd
R|'ybW'Y
/* (non-Javadoc) AzPu)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QFA8N
*/ rjK%t|aV^
public void sort(int[] data) { hqD*z6aH
MaxHeap h=new MaxHeap(); @JGP,445
h.init(data); 49eD1h3'X[
for(int i=0;i h.remove(); |44Ploz2b
System.arraycopy(h.queue,1,data,0,data.length); M$wC=b
} W<'m:dq
91/Q9xY
private static class MaxHeap{ \UA[
(|2t#'m
void init(int[] data){ Kf3"Wf^q
this.queue=new int[data.length+1]; n3WlZ!$
for(int i=0;i queue[++size]=data; aHD]k8m z
fixUp(size); pd?Mf=>#
} <]ox;-56
} ldf\;Qk
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private int size=0; :'Vf
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private int[] queue; TP*hd
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public int get() { 7P} W
*
return queue[1]; 9i:L&dN
} 5=-Q4d
yNPVOp*
public void remove() { IW5,7.
SortUtil.swap(queue,1,size--); e[1hz_v
fixDown(1); nkPh,X\N0
} =F|{#F
file://fixdown Cp\6W[2+B
private void fixDown(int k) { y
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int j; PrqlTT}Px
while ((j = k << 1) <= size) {
l]5KN
if (j < size %26amp;%26amp; queue[j] j++; .xCZ1|+gG
if (queue[k]>queue[j]) file://不用交换 9X6h
break; 1C+13LE$U
SortUtil.swap(queue,j,k); p
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k = j; RHW]Z
Pr<
} }RF(CwZr(
} Q0sI(V#
private void fixUp(int k) { hPkp;a #
while (k > 1) { G[ PtkPSJ
int j = k >> 1; #~]zhHI
if (queue[j]>queue[k]) @mCEHI{P
break; )_90UwWpj
SortUtil.swap(queue,j,k); T=DbBy0-
k = j; h,:m~0gmj
} )rU
} bIDj[-CDG
DeVv4D:}@
} k=$TGqQY?
,Zx0%#6
} dlh)gp;
,_ H:J.ik
SortUtil: P;.W+WN
?FZ HrA
package org.rut.util.algorithm; {lzWrUGO
o'aEY<mZ7
import org.rut.util.algorithm.support.BubbleSort; 2QcOR4_V
import org.rut.util.algorithm.support.HeapSort; B:Oa}/H
import org.rut.util.algorithm.support.ImprovedMergeSort; +.PxzL3?
import org.rut.util.algorithm.support.ImprovedQuickSort; z|J_b"u4
import org.rut.util.algorithm.support.InsertSort; NN{?z!
import org.rut.util.algorithm.support.MergeSort; /U*C\ xMm
import org.rut.util.algorithm.support.QuickSort; X,%
0/6*]
import org.rut.util.algorithm.support.SelectionSort; e)k9dOR
import org.rut.util.algorithm.support.ShellSort; VT)oLj/A
]jQutlg|
/** Wis~$"
* @author treeroot ?4} h&/
* @since 2006-2-2 a5^]20Fa
* @version 1.0 <NY^M!
*/ _.Nbt(mz
public class SortUtil { s\(k<Ks
public final static int INSERT = 1; F,F4nw<W
public final static int BUBBLE = 2; ;8&3 dm]
public final static int SELECTION = 3; Ta0|+IYk<
public final static int SHELL = 4; 4Z=_,#h4.
public final static int QUICK = 5; Rok7n1gW
public final static int IMPROVED_QUICK = 6; B]wk+8SMY.
public final static int MERGE = 7; qr^3R&z!}
public final static int IMPROVED_MERGE = 8; I_#kgp
public final static int HEAP = 9; e]"W!KcD9
M)+H{5bt
public static void sort(int[] data) { %(#y5yJ ]
sort(data, IMPROVED_QUICK); n)-$e4u2
} dL 1tl
private static String[] name={ /t57!&
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2;`1h[,-^
}; /9*B)m"
N)| yu1S
private static Sort[] impl=new Sort[]{ ~
'cmSiz-
new InsertSort(), xh,qNnGGi
new BubbleSort(), \ a<h/4#|
new SelectionSort(), k,6f
new ShellSort(), jD]~ AwRJ
new QuickSort(), N^G
Mp,8
new ImprovedQuickSort(), IqHV)A
new MergeSort(), x"=f+Mr
new ImprovedMergeSort(), GW@;}m(
new HeapSort() YUD`!C
}; BO;tCEV?
D,*3w'X!K
public static String toString(int algorithm){ 8 +/rlHp
return name[algorithm-1]; (0r3/t?DQ
} O,
wJR
K(rWNO
public static void sort(int[] data, int algorithm) { _ QI\
impl[algorithm-1].sort(data); z+wA
rPxc
} !u[9a;Sa#
CS5?Ti6
public static interface Sort { 'RR~7h
public void sort(int[] data); '~<m~UXvD#
} #aJ(m&
sN*N&XG
public static void swap(int[] data, int i, int j) { . B9iLI
int temp = data; LVfF[
data = data[j]; DB|Y
data[j] = temp; U^%Q}'UYym
} ]L $\
#
} 3?9IJ5p