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。 C/-63O_
插入排序: 6VhjJJ
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package org.rut.util.algorithm.support; t N2Md}@e
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import org.rut.util.algorithm.SortUtil; R,Vd.-5M
/** c?@T1h4
* @author treeroot OiP!vn}k
* @since 2006-2-2 n-@j5w+k4
* @version 1.0 -xP!"
*/ 4f;HQ-Iv
public class InsertSort implements SortUtil.Sort{ RZCq {|L
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/* (non-Javadoc) \oZ5JoO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NrJKbk^4u/
*/ R`~z0d.
public void sort(int[] data) { 9cj9SB4
int temp; LA)[ip4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |u ;v27
} qQH]`#P
} @qHNE,K
} 6!(@@^7{*
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} \0gM o&
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冒泡排序: }3L@J8:D"
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package org.rut.util.algorithm.support; ^) s2$A:L
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import org.rut.util.algorithm.SortUtil; E)fglYWs2
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/** UMcgdJB
* @author treeroot z.I9wQ]X[
* @since 2006-2-2 mOlI#5H
* @version 1.0 '3 ^+{=q
*/ RnDt)3
public class BubbleSort implements SortUtil.Sort{ 5O6hxcMjT
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eh5gjSqx
*/ _Wa.JUbv
public void sort(int[] data) { (/j); oSK
int temp; W!&vul5
for(int i=0;i for(int j=data.length-1;j>i;j--){ qC?:*CXH
if(data[j] SortUtil.swap(data,j,j-1); b 'pOJS
} GF^071]G
} v7`HQvQEz=
} n .RhxgC<
} 5EebPXBzB
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} )6J9J+%bi
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选择排序: Q(oN/y3,
7[}xP#Z
package org.rut.util.algorithm.support; KPj\-g'A
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import org.rut.util.algorithm.SortUtil; X]dwX%:Z!j
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/** 9amaL~m
* @author treeroot C-H@8p?T
* @since 2006-2-2 `u&Zrdr,
* @version 1.0 gjAIEI
*/ ixT:)|'i
public class SelectionSort implements SortUtil.Sort { )}?#
A?pbWt~}
/* 9c6gkt9eB
* (non-Javadoc) #Q`dku%V:
* >b{q.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %eO0wa$a
*/ ]3l 9:|
public void sort(int[] data) { k>g_Z`%<
int temp; !GNBDRr
for (int i = 0; i < data.length; i++) { EG=Sl~~o
int lowIndex = i; H,u<|UMM_
for (int j = data.length - 1; j > i; j--) { eF3,2DDC
if (data[j] < data[lowIndex]) { {>)#HD
lowIndex = j; G8Y<1%`<
} % V8U(z
} yLQ*"sw\
SortUtil.swap(data,i,lowIndex); x-?Sn' m
} Cy=Hy@C
} dKxyA"@
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} csW43&
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Shell排序: Nu?-0>
K%RxwM
package org.rut.util.algorithm.support; #a8B/-
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import org.rut.util.algorithm.SortUtil; (j3xAA
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/** -3=#u_
* @author treeroot ?qWfup\S
* @since 2006-2-2 W|g4z7Pb
* @version 1.0 7M<'/s
*/ F6{bjv2A
public class ShellSort implements SortUtil.Sort{ #kaY0M
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/* (non-Javadoc) K8UP,f2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %*0^0wz
*/ 8Y7Q+p|O
public void sort(int[] data) { >^*+iEe
for(int i=data.length/2;i>2;i/=2){ M 4?ig}kh
for(int j=0;j insertSort(data,j,i); W)f/0QX}W
} @3C>BLI8+
} 2-Ej4I~
insertSort(data,0,1); VYk!k3qS
} jGpN,/VQa
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/** ([m
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* @param data Lja>8m
* @param j yooX$
* @param i ;CPr]avY
*/ [J4gH^Z_
private void insertSort(int[] data, int start, int inc) { io-![^{
int temp; LH8 fBhw
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )]H-BIuGm
} vRHd&0
} xk5@d6Y{r
} 42(Lb'G
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} 7KAO+\)H^Y
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快速排序: +oovx2r&
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package org.rut.util.algorithm.support; @c;|G$E@3
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import org.rut.util.algorithm.SortUtil; C,ARXW1
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/** hM6PP7XH
* @author treeroot vnM@QfN
* @since 2006-2-2 rPLm5ni
* @version 1.0 rLI8pA|.
*/ ;
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public class QuickSort implements SortUtil.Sort{ 'kL#]
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/* (non-Javadoc) %&w3;d;c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wp!%-vzy&
*/ sP;nGQ.eN
public void sort(int[] data) { NnDxq%l%
quickSort(data,0,data.length-1); x:7b/j-
} !`,Sfqij
private void quickSort(int[] data,int i,int j){ QD:{U8YbF$
int pivotIndex=(i+j)/2; LXC9I/j/
file://swap 7|$:=4
SortUtil.swap(data,pivotIndex,j); pEIRh1
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int k=partition(data,i-1,j,data[j]); )GM41t1i
SortUtil.swap(data,k,j); ujR_"r|l
if((k-i)>1) quickSort(data,i,k-1); JNt^ (z
if((j-k)>1) quickSort(data,k+1,j); r0+6evU2
6/r)y+H
} @,cowar*
/** ,D]QxbwZ
* @param data pgE}NlW
* @param i UBaAx21x
* @param j Q;43[1&3w
* @return gy 3i+J
*/ a1t4Dd
private int partition(int[] data, int l, int r,int pivot) { P3)Nl^/
do{ X\@C.H2ttY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YkniiB[/
SortUtil.swap(data,l,r); w35J.zn
} {f2S/$q
while(l SortUtil.swap(data,l,r); w[S pw<Z
return l; ^=RffrlZU
} =u2l.CX
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} zMm#Rhn
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改进后的快速排序: |
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package org.rut.util.algorithm.support; t>urc
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import org.rut.util.algorithm.SortUtil; qln3 k`
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/** beRVD>T
* @author treeroot r&R B9S@*h
* @since 2006-2-2 a!<8\vzg
* @version 1.0 TarIPp
*/ ,9}h
public class ImprovedQuickSort implements SortUtil.Sort { ES.fOdx
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private static int MAX_STACK_SIZE=4096; h]5C|M|
private static int THRESHOLD=10; JORGj0v
/* (non-Javadoc) aB{vFTD5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )z73-M V"
*/ j53*E
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public void sort(int[] data) { h_:C+)13`x
int[] stack=new int[MAX_STACK_SIZE]; vq^f}id
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int top=-1; ;#xmQi'`
int pivot; 4'`{H@]tb
int pivotIndex,l,r; 6K-_pg]
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stack[++top]=0; OWjk=u2Lz
stack[++top]=data.length-1; KxYwJ
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while(top>0){ XC0bI,Fu,
int j=stack[top--]; 'IZI:V"
int i=stack[top--]; B$ajK`x&I
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pivotIndex=(i+j)/2; u frW\X
pivot=data[pivotIndex]; ,2j&ko1
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SortUtil.swap(data,pivotIndex,j); 7
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file://partition >}`:Ac
l=i-1; q3.j"WaP
r=j; `k[-M2[
do{ Szq/hv=Q
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); < Z{HX[y
SortUtil.swap(data,l,r); L;VoJf
} Co (.:z~
while(l SortUtil.swap(data,l,r); Q&wB$*u
SortUtil.swap(data,l,j); v(B<Nb
^W'fA{sr
if((l-i)>THRESHOLD){ !%^^ \,
stack[++top]=i; z=rT%lz6
stack[++top]=l-1; # {w9s0:
}
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if((j-l)>THRESHOLD){ [ oL.+
stack[++top]=l+1; h U`wVy
stack[++top]=j; Gn|F`F
} M m[4yP%
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} .y_/U wu
file://new InsertSort().sort(data); R:e<W/P"
insertSort(data); hd>aZ"nm1
} _/uFsYC
/** K/tRe/t}
* @param data 6-yd]("
*/ "U!AlZ`g
private void insertSort(int[] data) { WG N=Y~E
int temp; d
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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); Cdas P9"1
} P<l&0dPO8
} t]y
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} {5%5}[/x
%\D)u8}
} ud xZ0
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归并排序: Bt>}rYz1
LJk@Vy <?
package org.rut.util.algorithm.support; S4^vpY
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import org.rut.util.algorithm.SortUtil; <(-= 'QA
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/** 'oF%,4 !Y
* @author treeroot As 3.Q(#Z
* @since 2006-2-2 LQ(yScA@
* @version 1.0 [s"O mAy4
*/ 4{hps.$?~
public class MergeSort implements SortUtil.Sort{ X%Z{K-
@y='^DQ*
/* (non-Javadoc) 9:ze{ c $
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LQtj~c>X-|
*/ b7NM#Hb
public void sort(int[] data) { &y3OR1_Sm*
int[] temp=new int[data.length]; g .onTFwN
mergeSort(data,temp,0,data.length-1); lJu;O/
} J?Ra bYd ~
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private void mergeSort(int[] data,int[] temp,int l,int r){ jX3,c%aQ5e
int mid=(l+r)/2; *of3:w
if(l==r) return ; JRSSn] pw
mergeSort(data,temp,l,mid); 19O,a#{KHf
mergeSort(data,temp,mid+1,r); $^OvhnL/
for(int i=l;i<=r;i++){ =+U `-J}g
temp=data; ue4Vcf
} 0J?~N`#O|
int i1=l; Y' %^NP}o
int i2=mid+1; G?EoPh^m
for(int cur=l;cur<=r;cur++){ (yF:6$:#
if(i1==mid+1) zA$k0p
data[cur]=temp[i2++]; N['qgO/
else if(i2>r) l^|UCgRn
data[cur]=temp[i1++]; Sz^
veh?
else if(temp[i1] data[cur]=temp[i1++]; @\|_
else R_sr?V|"
data[cur]=temp[i2++]; `8^TTQ
} CjlKMbnBH
} h3bff#<K
cWi}V
} T(f/ ?_%
Po ZuMF
改进后的归并排序: -u2P ?~
SS$[VV
package org.rut.util.algorithm.support; {DU`[:SQZg
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import org.rut.util.algorithm.SortUtil; }emN9Rj
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/** |&FkksNAl\
* @author treeroot Z8rvWH9
* @since 2006-2-2 -7S g62THS
* @version 1.0 { jhr<
*/ VY~yg*
public class ImprovedMergeSort implements SortUtil.Sort { +6';1Nb@
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private static final int THRESHOLD = 10; (vb
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}oL'8-y
/* ~ ip,Nl
* (non-Javadoc) S-k8jm
* # a<Gxj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VH+%a<v"
*/ bsB*533
public void sort(int[] data) { :/Q
int[] temp=new int[data.length]; \~fONBY
mergeSort(data,temp,0,data.length-1); {5F-5YL+>
} ^
q<v{_
pL{U `5S
private void mergeSort(int[] data, int[] temp, int l, int r) { OU8Lldt
int i, j, k; Wzw7tLY._
int mid = (l + r) / 2; ,QcF|~n
if (l == r) 8>0e*jC
return; +xrr?g
if ((mid - l) >= THRESHOLD) f ` R/
i
mergeSort(data, temp, l, mid); <4P4u*/o
else E=>FjCsu<-
insertSort(data, l, mid - l + 1); .ox8*OO<
if ((r - mid) > THRESHOLD) D'J0wT#
mergeSort(data, temp, mid + 1, r); gLy&esJl1
else m06ALD_
insertSort(data, mid + 1, r - mid); 3wC' r
:.$3vaZ@
for (i = l; i <= mid; i++) { }[4r4 1[
temp = data; ~g5[$r-u-u
} 6"~P/\jP
for (j = 1; j <= r - mid; j++) { 8P1=[i]
temp[r - j + 1] = data[j + mid]; ',:*f8Jk
} `[W[H(AjQ
int a = temp[l]; P*I}yPeb
int b = temp[r]; EL(nDv
for (i = l, j = r, k = l; k <= r; k++) { 1IZ3=6
if (a < b) { MBqt&_?K
data[k] = temp[i++]; JwAYG5W
a = temp; fp+gyTnd3
} else { H[S%J3JI
data[k] = temp[j--]; qYlhlHD
b = temp[j]; T~Gvp0r}h
} U-R6xxPZ
} `QyO`y=?[Y
} {&\jW!&n
=5kY6%E7c
/** Mz~M3$$9n
* @param data OoA|8!CFa
* @param l aFS,GiB
* @param i Q$="_y2cTA
*/ hM{{\yZS
private void insertSort(int[] data, int start, int len) { YgUvOyaQXf
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5u*-L_
} 'H
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} 4:r!|PJn{G
} HbXPok
} |Z=^`J
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堆排序: Tl2C^j
&(xH$htv1
package org.rut.util.algorithm.support; i 7x7xtq
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import org.rut.util.algorithm.SortUtil; vTlwRG=5
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/**
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* @author treeroot my4giC2a
* @since 2006-2-2 E0MGRI"me
* @version 1.0 _nbBIaHN{
*/ `C$:Yf]%nG
public class HeapSort implements SortUtil.Sort{ bO'Sgc[]
i`dCG[
/* (non-Javadoc) w*oQ["SL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~TSy<t~%-
*/ gx\&_)w N
public void sort(int[] data) { Il=
W,/y
MaxHeap h=new MaxHeap(); 7z!tKs"TMT
h.init(data); K }Vv4x1U
for(int i=0;i h.remove(); B[Zjfc
System.arraycopy(h.queue,1,data,0,data.length); ~%SH3$
} C4~;y hz
}Rz3<eON
private static class MaxHeap{ eC[$B99\
kH]yl
2
void init(int[] data){ fO0XA"=
this.queue=new int[data.length+1]; +eFFSt
for(int i=0;i queue[++size]=data; y5do1Z
fixUp(size); <iH`rP#
} ^OstR`U3
} K)Q]a30
<xgTS[k
private int size=0; PzA|t;*
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private int[] queue; Y6Lf@}2(i
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public int get() { k;w- E
return queue[1]; .)<(Oj|4
} 34d3g
LAd\ Tvms
public void remove() { ,0hA'cp
SortUtil.swap(queue,1,size--); <-,gAk)u
fixDown(1); N(y\dL=v
} u"d~!j1
file://fixdown AO=h
23ZI
private void fixDown(int k) { *T~Ve;3h;
int j; ub;ZtsM,%
while ((j = k << 1) <= size) { 8"fD`jtQ
if (j < size %26amp;%26amp; queue[j] j++; /XhIx\40l
if (queue[k]>queue[j]) file://不用交换 WnGGo'Z
break; }jVSlCF@t
SortUtil.swap(queue,j,k); /4vG3
k = j; :1iqT)&|8F
} wYQ&C{D%
} tb$LriN
private void fixUp(int k) { brdmz}
while (k > 1) { 0 0M@
int j = k >> 1; m"o ;L3
if (queue[j]>queue[k]) q~*t@
break; V}SBuQp"
SortUtil.swap(queue,j,k); -eN\ !
k = j; sK7+Q
} OujCb^Rm
} 'rr^2d]`ST
il \$@Bn
} j&
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6Qx#%,U^ J
} 8'f4 Od ?
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SortUtil: I+dbZBX
FKT1fv[H
package org.rut.util.algorithm; ;uW}`Q<
tPGJ<30
import org.rut.util.algorithm.support.BubbleSort; rwG CUo6Z
import org.rut.util.algorithm.support.HeapSort; 86\S?=J-b
import org.rut.util.algorithm.support.ImprovedMergeSort; {WPobP"
import org.rut.util.algorithm.support.ImprovedQuickSort; l?Fb ='#
import org.rut.util.algorithm.support.InsertSort; @)-$kk*
import org.rut.util.algorithm.support.MergeSort; y^}6!>Ou:
import org.rut.util.algorithm.support.QuickSort; ^8@Iyh
import org.rut.util.algorithm.support.SelectionSort; |'{zri|A"
import org.rut.util.algorithm.support.ShellSort; aMvI?y {
V2i@.@$j
/** _<NMyRJo
* @author treeroot W~p/,H cM
* @since 2006-2-2 aOiR l,
* @version 1.0 tc!wLnhG
*/ m/qbRk68s
public class SortUtil { /Ne<V2AX
public final static int INSERT = 1; NN1$'"@NL
public final static int BUBBLE = 2; 6+KHQFb&N
public final static int SELECTION = 3; R#DwF,
public final static int SHELL = 4; 5GPo*Qpl
public final static int QUICK = 5; K!] 1oy'V
public final static int IMPROVED_QUICK = 6; M>>qn_yq4
public final static int MERGE = 7; ,i,q!M{-
public final static int IMPROVED_MERGE = 8; ,$
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public final static int HEAP = 9; aN $}?
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public static void sort(int[] data) { i7utKj*57
sort(data, IMPROVED_QUICK); bLd#xXl
} X0M1(BJgGo
private static String[] name={ C,pJ`:P
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K
a(J52
}; /M*a,o
zdEPDdB
private static Sort[] impl=new Sort[]{ }LijnHH.
new InsertSort(), LI6hEcM=
new BubbleSort(), Wf&W^Q
new SelectionSort(), BZXUwqEh
new ShellSort(), =T7A]U]
new QuickSort(), 4)<~4 '
new ImprovedQuickSort(), (Gw,2-A
new MergeSort(), }Iz7l{al
new ImprovedMergeSort(), _+^ 2^TW
new HeapSort() S9>0t0
}; =l0Jb#d
}QsZ:J.
public static String toString(int algorithm){ 2d {y M(=(
return name[algorithm-1]; sqS=qC
} XxaGp95so
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public static void sort(int[] data, int algorithm) { V2<?ol
impl[algorithm-1].sort(data); yH<$k^0r*
} E gDQ+(
-
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bR
public static interface Sort { WzI8_uM
public void sort(int[] data); W{rt8^1
} &%_& 8DkG
@j4U^"_QB
public static void swap(int[] data, int i, int j) { Eb=#9f%y>&
int temp = data; vQa'S-@u
data = data[j]; <6G11-K
data[j] = temp; ?"KC-u|
} w1|A5q'M
} f*24)Wn<