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。 yRyXlZC
插入排序: {$hWz (
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package org.rut.util.algorithm.support; i .uyfV&F
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import org.rut.util.algorithm.SortUtil; 41<h|WA
/** z$R&u=J
* @author treeroot ;mQ|+|F6X
* @since 2006-2-2 *3fl}l
* @version 1.0 g:ky;-G8b
*/ -0kMh.JYR
public class InsertSort implements SortUtil.Sort{ $<nRW*d
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/* (non-Javadoc) \efDY[j/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S',h*e
*/ cB){b'WJ
public void sort(int[] data) { r=0PW_r:
int temp; |ugdl|f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SyVXXk 0
} Ie/_gz^
} gfj_]
} (m:Q'4Ep
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} 6E-eD\?I&
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冒泡排序: O}zHkcL
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package org.rut.util.algorithm.support; 4 H0rS'5d
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import org.rut.util.algorithm.SortUtil; UTh2?Rh/
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/** s_/@`kd{
* @author treeroot v77UE"4|c
* @since 2006-2-2 2=fM\G
* @version 1.0 Rf8Obk<
*/ `WOoC
public class BubbleSort implements SortUtil.Sort{ ftTD-d
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/* (non-Javadoc) NMK$$0U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :JG5)H}j+
*/ hRX9Du`$
public void sort(int[] data) { 0.x+ H9z
int temp; $I*}AUp
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for(int i=0;i for(int j=data.length-1;j>i;j--){ #X'-/q`.
if(data[j] SortUtil.swap(data,j,j-1); @[9
} ;&=CZ6vH
} }.)R#hG?
} >8I~i:hn
} /B?wn=][
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} 01-rBto$
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选择排序: Nmz5:Rq
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package org.rut.util.algorithm.support; lqOpADLS3
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import org.rut.util.algorithm.SortUtil; Db|JR
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/** DCiU?u~
* @author treeroot Zqm%qm:
* @since 2006-2-2 X5/j8=G H`
* @version 1.0 'uL$j=vB
*/ yg'CL/P
public class SelectionSort implements SortUtil.Sort { W`9{RZ'
vw!7f|Pg ~
/* "KK}}$>
* (non-Javadoc) ,H"}Rw
* 1q!k#Cliu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a%m
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*/ 5*Zz_ .
public void sort(int[] data) { ^2$b8]q
int temp; YU-wE';H6
for (int i = 0; i < data.length; i++) { TxK
v!-1
int lowIndex = i; \A\
for (int j = data.length - 1; j > i; j--) { ,c`6-
if (data[j] < data[lowIndex]) { {z_cczJ-
lowIndex = j; yJC:
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} :j3'+%'2
} ;~:Z~8+{c
SortUtil.swap(data,i,lowIndex); ,^c-}`!K
} Uz_ob9l<#H
} D.{vuftu
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} HLDv{G'7
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Shell排序: ;}Lf
u3 LoP_|
package org.rut.util.algorithm.support; }GURq#
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import org.rut.util.algorithm.SortUtil; kYkA^Aq
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/** GOdWc9Ta!
* @author treeroot 2( GYk
* @since 2006-2-2 i`l;k~rP
* @version 1.0 -
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*/ .$cX:"_Mk
public class ShellSort implements SortUtil.Sort{ n%36a(]
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/* (non-Javadoc) U~yPQ8jD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5g-1pzP9
*/ ],!}|
public void sort(int[] data) { 3t9+Y dNKU
for(int i=data.length/2;i>2;i/=2){ *y<eK0
for(int j=0;j insertSort(data,j,i); 'j'6x'[>]
} THOYx :Nr;
} uaP5(hUI
insertSort(data,0,1); jNX6Ct?
} W7|nc,i0\
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/** bvB7d`wx
* @param data C~>0K,C0^
* @param j q/*veL
* @param i 3:WHC3}W
*/ ehr\lcS<
private void insertSort(int[] data, int start, int inc) { 8hww({S2
int temp; 30I-E._F
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qm_r~j
} zp9l u B
} :yJ#yad
} 3<)][<Ud
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} w8q
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快速排序: ZGh6- /
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package org.rut.util.algorithm.support; #o~C0`8!B=
%?V~7tHm>
import org.rut.util.algorithm.SortUtil; _M8'~$Sg
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/** au=@]n#<(
* @author treeroot W^HE1Dt]
* @since 2006-2-2 a|y'-r90
* @version 1.0 #G(ivRo
*/ EY !o#m
public class QuickSort implements SortUtil.Sort{ l2M(
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/* (non-Javadoc) L^CB#5uG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5>S1lyam
*/ ^ux'-/
public void sort(int[] data) { ?vWF[ DRd'
quickSort(data,0,data.length-1); _
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} 6j1C=O@S
private void quickSort(int[] data,int i,int j){ 0r$n
int pivotIndex=(i+j)/2; \uo{I~Qd
file://swap 'HV@i)h0%V
SortUtil.swap(data,pivotIndex,j); x5g&?2[
8]#J_|A6Z
int k=partition(data,i-1,j,data[j]); H^o_B1
SortUtil.swap(data,k,j); @>ys,dy
if((k-i)>1) quickSort(data,i,k-1); k&[6Ld0~56
if((j-k)>1) quickSort(data,k+1,j); Rc9>^>w
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} pfc"^Gi8
/** ?)<zzL",
* @param data Xep2)3k>
* @param i _'y`hKeI[
* @param j 4,YL15.
* @return R $dNdd9m
*/ *e:I*L
private int partition(int[] data, int l, int r,int pivot) { ntPX?/
do{ N2j^fZd_
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WCqa[=v)t
SortUtil.swap(data,l,r); yoieWnL}
} <7Yh<(R e^
while(l SortUtil.swap(data,l,r); ?c"iV
return l; ^g2Vz4u
} M'X,7hZ
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} +S#Xm4
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改进后的快速排序: /`#JM
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package org.rut.util.algorithm.support; NTK9`#SA
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import org.rut.util.algorithm.SortUtil; mss.\
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/** ;2?fz@KZ
* @author treeroot XCyb[(4
* @since 2006-2-2 m#_M"B.cm
* @version 1.0 L"c.15\
*/ e^;:iJS
public class ImprovedQuickSort implements SortUtil.Sort { b
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private static int MAX_STACK_SIZE=4096; ]sP
private static int THRESHOLD=10; Zv
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/* (non-Javadoc) ;5T}@4m|r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yP` K [/
*/ FH%:NO
public void sort(int[] data) { Ks^wX
int[] stack=new int[MAX_STACK_SIZE]; nHF~a?|FT
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int top=-1; 211T}a
int pivot; {5ehm
int pivotIndex,l,r; B=r+
m;(
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stack[++top]=0; ZifDU@J$t
stack[++top]=data.length-1; z.h;}QRJ,@
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while(top>0){ tblduiN
int j=stack[top--]; ]70ZerQ~L
int i=stack[top--]; &VCg`r-{~
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pivotIndex=(i+j)/2; v/v PU
pivot=data[pivotIndex]; F]<2nb7
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SortUtil.swap(data,pivotIndex,j); Ut/%+r"s
r1=j$G
file://partition 8y[Rwa
l=i-1; #l9sQ-1Q
r=j; ?y"M>#
do{ `q | )_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hc9ON&L\>
SortUtil.swap(data,l,r); 4OAR ["f
} O^ &m
while(l SortUtil.swap(data,l,r); 3-Xd9ou
SortUtil.swap(data,l,j); BT3yrq9
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if((l-i)>THRESHOLD){ ~GJ;;v1b2
stack[++top]=i; /Q89 y[
stack[++top]=l-1; ru1^.(W2
} [P }mDX
if((j-l)>THRESHOLD){ 7&]|c?([4
stack[++top]=l+1; m9DTz$S.
stack[++top]=j; v<(+ l)Ln
} $|[N3
k#/cdK!K
} #2Vq"Zn
file://new InsertSort().sort(data); p)m5|GH24
insertSort(data); w~=xO_%
} #IDLfQ5g
/** *L Y6hph"
* @param data tt6GtYrC 1
*/ RHbbj}B
private void insertSort(int[] data) { ;v.J
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int temp; cc1M9kVi
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0$=U\[og
} ]HXHz(?;F
} sK/ymEfRv
} FGm!|iI
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} hOFvM&$
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归并排序: }!|$;3t+c
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package org.rut.util.algorithm.support; q]Xu #:X
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import org.rut.util.algorithm.SortUtil; XW^Pz(
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/** i],~tT|P
* @author treeroot 7A$mZPKh
* @since 2006-2-2 O@dK^o
* @version 1.0 -Edi"B4K
*/ F|oyrG
public class MergeSort implements SortUtil.Sort{ [
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/* (non-Javadoc) *Utx0Me
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2FO<Z %Y
*/ (wxi!
public void sort(int[] data) { B
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int[] temp=new int[data.length]; _~P&8
mergeSort(data,temp,0,data.length-1); hKnV=Ha(
} <QaUq`,
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private void mergeSort(int[] data,int[] temp,int l,int r){ `JGW8 _
int mid=(l+r)/2; Y 9st3
if(l==r) return ; 9U )9u["DH
mergeSort(data,temp,l,mid); T@zp'6\H
mergeSort(data,temp,mid+1,r); )!G 10
for(int i=l;i<=r;i++){ nT}i&t!q8@
temp=data; Q{miI
N
} \.P#QVuQ
int i1=l; :w4N*lV-
int i2=mid+1; m?8o\|i,
for(int cur=l;cur<=r;cur++){ ;l < amB
if(i1==mid+1) *o(bB!q"c
data[cur]=temp[i2++]; g1l:k1\Ht
else if(i2>r) f^IB:e#j;
data[cur]=temp[i1++]; Q+_z*
else if(temp[i1] data[cur]=temp[i1++]; !u4eI0?R?
else t.bM]QU!1
data[cur]=temp[i2++]; ?hURNlR_Q
} *7L1SjZw
} G"Ey%Q2K
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} /,$V/q+
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改进后的归并排序: |'x"+x
muFWFq&yP
package org.rut.util.algorithm.support; iHQ$L# 7
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import org.rut.util.algorithm.SortUtil; *#?9@0b@
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/** -0NkAQrg
* @author treeroot )?LZg<<
* @since 2006-2-2 wCj)@3F
* @version 1.0 Lso%1M
*/ mW,b#'hy
public class ImprovedMergeSort implements SortUtil.Sort { Aq>?G+
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private static final int THRESHOLD = 10; iorQ/(
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/* z 61F q
* (non-Javadoc) e9QjRx
* {QOy'
8/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A#i[Us|
*/ #2Iw%H 2q&
public void sort(int[] data) { aQ&K a
int[] temp=new int[data.length]; EEx:Xk%5hX
mergeSort(data,temp,0,data.length-1); ztp2j%'
} @s,kx.S
Y\4B2:Qd9
private void mergeSort(int[] data, int[] temp, int l, int r) { )N\ BC
int i, j, k; /paZJ}Pr.
int mid = (l + r) / 2; )%8st'
if (l == r) .O&YdUo
return; uy<b5.!-
if ((mid - l) >= THRESHOLD) iYlkc
mergeSort(data, temp, l, mid); 2zX9c<S=5
else C!6D /S
insertSort(data, l, mid - l + 1); |=:hUp Jp
if ((r - mid) > THRESHOLD) r;wm`(e
mergeSort(data, temp, mid + 1, r); Z:2%gU&W
else )?6%d
insertSort(data, mid + 1, r - mid); ={o)82LV
lB#7j
for (i = l; i <= mid; i++) { 5as5{"l
temp = data; 'cc{sjG
} oMoco tQ;$
for (j = 1; j <= r - mid; j++) { O]!o|w(
temp[r - j + 1] = data[j + mid]; 'UuHyC2Ha3
} IQ
xi@7%&
int a = temp[l]; D)Jac@,0
int b = temp[r]; <P]%{msGH
for (i = l, j = r, k = l; k <= r; k++) { _U^G*EqL*
if (a < b) { vCOtED*<
data[k] = temp[i++]; 2gEF$?+q?
a = temp; ,,ML^ey
} else { Re*~C:
data[k] = temp[j--]; 4 DV,f2:R4
b = temp[j]; K7i@7
} 2dbn~j0
} ,<s:*
k
} aH_FBY
k_gl$`A
/** 79h'sp6;
* @param data [N"=rY4G
* @param l ph%t
#R
* @param i mDuS-2G=D
*/ LE?sAN
private void insertSort(int[] data, int start, int len) { [b~+VeP+p4
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8cURYg6v
} p$*P@qm
} ~I~lb/
} F9A5}/\
} =&DuQvN,
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堆排序: s; sr(34
15Jc PDV
package org.rut.util.algorithm.support; >?ec"P%vS/
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import org.rut.util.algorithm.SortUtil; 8VC%4+.FF
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/** ogJ';i/o
* @author treeroot ([7XtG/?
* @since 2006-2-2 ,8!'jE[d
* @version 1.0 = U[$i"+
*/ H%i [;
public class HeapSort implements SortUtil.Sort{ u
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8CH9&N5W5t
/* (non-Javadoc) 6#a82_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C+dz0u3s
*/ 'X?Iho
public void sort(int[] data) { JLg/fB3%
MaxHeap h=new MaxHeap(); OAgZeK$
h.init(data); )XoMOz
for(int i=0;i h.remove(); k3]qpWKj
System.arraycopy(h.queue,1,data,0,data.length); Q"3gvIyc
} HLL=.: P
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private static class MaxHeap{ ~w.y9)",
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void init(int[] data){ ^E~1%Md.
this.queue=new int[data.length+1]; J- 5kvQi8
for(int i=0;i queue[++size]=data; e-VGJxR
fixUp(size); 7=&+0@R#/d
} ;*=7>"o'`
} K%u>'W
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private int size=0; +Z]}ce
u"
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private int[] queue; w>'3}o(nY
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public int get() { hb9HVj
return queue[1]; 0vMKyT3 c
} SEE:v+3|
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public void remove() { as!P`*@
SortUtil.swap(queue,1,size--); GXRW"4eF5
fixDown(1); sN) xNz
} (.5Ft^3W
file://fixdown <vb7X
private void fixDown(int k) { uWP0(6 %
int j; >ZU)bnndA
while ((j = k << 1) <= size) { D<WGau2H
if (j < size %26amp;%26amp; queue[j] j++; Y3-f68*(
if (queue[k]>queue[j]) file://不用交换 xZ
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break; <)Y jVGG
SortUtil.swap(queue,j,k); A.RG8"
k = j; `\/\C[Gg
} I$XwM
} Tl+PRR6D*
private void fixUp(int k) { @xk ;]H80
while (k > 1) { t[AA=
int j = k >> 1; .z*}%,G
if (queue[j]>queue[k]) 0WyOORuK
break; u<+"#.[2v~
SortUtil.swap(queue,j,k); i<q_d7-W'
k = j; /_yAd,^-+
} h<n 2pz}
} kUr/*an
R38
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} 8m#y>`
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} D u_;!E
{!! 8 *ix
SortUtil: (`R
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&!FI!T
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package org.rut.util.algorithm; }FX:sa?5
fUOQ(BGp
import org.rut.util.algorithm.support.BubbleSort; HYZp=*eb
import org.rut.util.algorithm.support.HeapSort; S>Gb
Jt(]
import org.rut.util.algorithm.support.ImprovedMergeSort; z f>(Y7M
import org.rut.util.algorithm.support.ImprovedQuickSort; o|_9%o52'
import org.rut.util.algorithm.support.InsertSort; _BvGEM`o
import org.rut.util.algorithm.support.MergeSort; $bN_0s0:'
import org.rut.util.algorithm.support.QuickSort; IGlM}
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import org.rut.util.algorithm.support.SelectionSort; }Nma %6PfV
import org.rut.util.algorithm.support.ShellSort; EoS6t
g!)*CP#;
/** 5,\|XQA5!
* @author treeroot PWO5R]
* @since 2006-2-2 Q9Go}}n
* @version 1.0 m6Qm }""
*/ Z|A+\#'
public class SortUtil { 2(P<TP._E
public final static int INSERT = 1; LKZv#b[h
public final static int BUBBLE = 2; p}Bh
public final static int SELECTION = 3; g!z &lQnZ
public final static int SHELL = 4; ,L-V?B(UQ
public final static int QUICK = 5; pIKfTkSqH
public final static int IMPROVED_QUICK = 6; E
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public final static int MERGE = 7; ll?Qg%V[t
public final static int IMPROVED_MERGE = 8; Nk1p)V SC
public final static int HEAP = 9; PO|gM8E1x?
cE?p~fq<
public static void sort(int[] data) { r[#*..Y
sort(data, IMPROVED_QUICK); ?KE:KV[Y
} @ 0/EKWF
private static String[] name={ f>m! }F:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #IJ6pg>K
}; X +/^s)
\KKE&3=
private static Sort[] impl=new Sort[]{ ~y/qm
[P
new InsertSort(), "#h/sAIs
new BubbleSort(), `1#Z9&bO
new SelectionSort(), 9"}5jq4*
new ShellSort(), :W+%jn
new QuickSort(), )q[Wzx_ j<
new ImprovedQuickSort(), s%A?B8,
new MergeSort(), aPX'CG4m
new ImprovedMergeSort(), 14(ct
new HeapSort() hE'>8 {
}; x Vw1
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public static String toString(int algorithm){ 0%yPuY>
return name[algorithm-1]; w BoP&l
} ~b%dBn]n>
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public static void sort(int[] data, int algorithm) { 4.>y[_vu
impl[algorithm-1].sort(data); 7dOpJjv?)
} g\*2w
@
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l~
public static interface Sort { (%9J(4
public void sort(int[] data); bP%X^q~]A
} ucJ8l(?Qc
L^2wEF
public static void swap(int[] data, int i, int j) { hI*6f3Vn(n
int temp = data; 'u_j5
data = data[j]; 4~hP25q
data[j] = temp; ={jj'X9
} gb}ov**
} }^*`&Lh