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。 DdI7%?hK
插入排序: DSwF
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package org.rut.util.algorithm.support; T[$Sbz`
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import org.rut.util.algorithm.SortUtil; v}6YbY Tq
/** ?Az pb}#
* @author treeroot ':,6s
* @since 2006-2-2 nsyg>=j
* @version 1.0 0/.#V*KM
*/ 4'BzW Z;_a
public class InsertSort implements SortUtil.Sort{ >Kl78w:
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/* (non-Javadoc) ;WIL?[;w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0w >DU^+
*/ $,k SR}
public void sort(int[] data) { O$
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int temp; ;(w=}s%]+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #( nheL
} X$JO<@x
} {nQ}t
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} Fqzk/m
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} *jWU8.W
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冒泡排序: ~H0~5v F
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package org.rut.util.algorithm.support; )!dELS\ix
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import org.rut.util.algorithm.SortUtil; tC+9W1o
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/** -<#n7b
* @author treeroot i7~oZ)w
* @since 2006-2-2 ej,MmLu~^
* @version 1.0 Y=G *[G#
*/ }wR)p
public class BubbleSort implements SortUtil.Sort{ ZLvw]N&R
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/* (non-Javadoc) 1elx~5v1.=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y_"GMw
*/ )EO/P+&
public void sort(int[] data) { I#l9
int temp; %9mCgHQ9
for(int i=0;i for(int j=data.length-1;j>i;j--){ Kw'Dzz%kN
if(data[j] SortUtil.swap(data,j,j-1); ZNB*Azi
} +2oZB]GPL
} 9BANCW"
} HkvCQ H
} c7\bA7.
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} @n(=#Q3
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选择排序: cXJgdBwo
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package org.rut.util.algorithm.support; JXj`
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import org.rut.util.algorithm.SortUtil; xSb/98;
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/** 1,PFz
* @author treeroot fJv0 B*
* @since 2006-2-2 %8o(x 0
* @version 1.0 {yyg=AMz
*/ C>68$wd>
public class SelectionSort implements SortUtil.Sort { Op3 IL/
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/* |0f\>X I
* (non-Javadoc) qw87B!D
* O8u"Y0$*w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2|}p&~G(
*/ 8Z3+S)6
public void sort(int[] data) { &s/aJgJhp
int temp; =X&h5;x'
for (int i = 0; i < data.length; i++) { XQ(`8Jl&^
int lowIndex = i; rvE!Q=y~
for (int j = data.length - 1; j > i; j--) { n]Dq
if (data[j] < data[lowIndex]) { L&3=5Bf9
lowIndex = j; A#1y>k
} iI&SI#;
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} =As'vt
0
SortUtil.swap(data,i,lowIndex); 5!nZvv
} @oRYQ|.R
} ,A6*EJ\w
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} cjN4U [
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Shell排序: Wq{' ZN
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; %\b5)p
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/** #-lk=>
* @author treeroot [/#n+sz.A
* @since 2006-2-2 %7|qnh6
* @version 1.0 3b&W=1J
*/ }= <!j5:
public class ShellSort implements SortUtil.Sort{ RTl7vzG
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/* (non-Javadoc) q',a7Tf:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8%xtb6#7M
*/ !-MG"\#Wq
public void sort(int[] data) { 9q8
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for(int i=data.length/2;i>2;i/=2){ ]lO$oO
for(int j=0;j insertSort(data,j,i); A`N;vq,
} ;,4J:zvZdQ
} PPq*_Cf
insertSort(data,0,1); ptDA))7M/
} uk'<9g^
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/** O3BU.X1'%
* @param data to?"{
* @param j hXrvb[6
* @param i pP/o2
*/ #ASu
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private void insertSort(int[] data, int start, int inc) { lmc-ofEv
int temp; 8v6rS-iHP
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `UJW:qqW
} v'@LuF'e8
} ^#t<ILUa
} SQ1&n;M}f
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} AMm O+E?
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快速排序: r=[}7N
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package org.rut.util.algorithm.support; /6.b>|zF
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import org.rut.util.algorithm.SortUtil; /nmfp&@
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/** ut,"[+J
* @author treeroot L%8"d6
* @since 2006-2-2 plIx""a^h
* @version 1.0 'K"*4B^3
*/ p-6.:y
public class QuickSort implements SortUtil.Sort{ iLI]aZ
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/* (non-Javadoc) {vH8X(m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vVf!XZF
*/ d!X?R}
public void sort(int[] data) { ]s SoIT
quickSort(data,0,data.length-1); 2M1mdkP3
} ky%%H;
private void quickSort(int[] data,int i,int j){ .R"L$V$RU.
int pivotIndex=(i+j)/2; X5yh S
file://swap N|)V/no 6
SortUtil.swap(data,pivotIndex,j); 1lQ10J
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int k=partition(data,i-1,j,data[j]); Dm^kuTIG
SortUtil.swap(data,k,j); 24Tw1'mW
if((k-i)>1) quickSort(data,i,k-1); 18HHEW{
if((j-k)>1) quickSort(data,k+1,j); u'b_zlW@
+~v(*s C
} %jf gncW
/** dEp=;b s
* @param data hzH5K
* @param i O:x%!-w
* @param j xd.C&Dx5
* @return Ol@ZH_
*/ U
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private int partition(int[] data, int l, int r,int pivot) { gA|j\T{c
do{ u^uG_^^,/
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7(;VUR%%.
SortUtil.swap(data,l,r); qTGy\i
} ZSSgc0u^?
while(l SortUtil.swap(data,l,r); ?yb{DZ46
return l; 5`DH\VD.j
} lq5E?B
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} c 1GP3
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改进后的快速排序: u"T^DrRlQ
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package org.rut.util.algorithm.support; lTP02|eK
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import org.rut.util.algorithm.SortUtil; ATHz~a
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/** k}.nH"AQ
* @author treeroot B=r/(e
* @since 2006-2-2 [ub\DLl
* @version 1.0 \nWpV7TSN
*/ p'4P2
public class ImprovedQuickSort implements SortUtil.Sort { A&'%ou
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private static int MAX_STACK_SIZE=4096; ZB%~>
private static int THRESHOLD=10; T1&H!
/* (non-Javadoc) :JIPF=]fc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *ZGN!0/
*/ 0}V'\=F454
public void sort(int[] data) { y<b0z\
int[] stack=new int[MAX_STACK_SIZE]; Y5CE#&
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int top=-1; ]l'ki8
int pivot; v],DBw9
int pivotIndex,l,r; 6zWvd
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stack[++top]=0; 6f!mk:\T.
stack[++top]=data.length-1; "tARJW
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while(top>0){ ]IV;>94[
int j=stack[top--]; O :^[4$~
int i=stack[top--]; &/F[kAy
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pivotIndex=(i+j)/2; -c@ 5qe>
pivot=data[pivotIndex]; PgAfR:Y!
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SortUtil.swap(data,pivotIndex,j); 9iCud6H,h
6%#'X
file://partition tV9C33
l=i-1; a)Ek~{9
r=j; I>#ChV)(#
do{ <UdD@(iZ#
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~S!kn1&O
SortUtil.swap(data,l,r); &:*+p-!2<
} !e `=UZe1
while(l SortUtil.swap(data,l,r); <GRf%zJ
SortUtil.swap(data,l,j); 9A(K_d-!H
+GU16+w~E
if((l-i)>THRESHOLD){ \k_3IP?o=
stack[++top]=i; !ei20@
stack[++top]=l-1; fZfiiE~7J
} 5qEdN
if((j-l)>THRESHOLD){ F`.7_D
stack[++top]=l+1; oZ[ w
stack[++top]=j; 55b |zf
} E |
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} L?+|%[
file://new InsertSort().sort(data); #>B1$(@
insertSort(data); pH%c7X/[3L
} MA#!<b('
/** sLp
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* @param data rC `s;w
*/ q:EQ,
private void insertSort(int[] data) { 2kq@*}ys
int temp; 8]\h^k4f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {fv8S;|u
} oZ:F3 GQ4Q
} ueBoSZRWX
} 4>C=:w
E}/|Lja
} b'5pQ2Mq
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归并排序: 6CRPdLTDf
<h51KPo^P
package org.rut.util.algorithm.support; 9[E$>o"%
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import org.rut.util.algorithm.SortUtil; 5yi q#
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/** SkRQFm0a~
* @author treeroot [+,U0OV,
* @since 2006-2-2 G%R`)Z]8&
* @version 1.0 O>5 u5n
*/ NOp=/
public class MergeSort implements SortUtil.Sort{ &(^u19TKl
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/* (non-Javadoc) 1>x@1Mo+K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vzvw/17J
*/ g*r;( H>e
public void sort(int[] data) { B^~Bv!tHWr
int[] temp=new int[data.length]; hg'!
mergeSort(data,temp,0,data.length-1); 'OW"*b
} ]u ~Fn2
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private void mergeSort(int[] data,int[] temp,int l,int r){ U2lC !j%K
int mid=(l+r)/2; @M^QhHs
if(l==r) return ; PVc|y.
mergeSort(data,temp,l,mid); YPDsE&,J)
mergeSort(data,temp,mid+1,r); 7d8qs%nA
for(int i=l;i<=r;i++){ S{7ik,Gdg
temp=data; jI<WzvhYG
} |0R%!v(,
int i1=l; .x?zky^
int i2=mid+1; Ny7=-]N4{"
for(int cur=l;cur<=r;cur++){ nL07^6(
if(i1==mid+1) OVSq8?L
data[cur]=temp[i2++]; Le:mMd= G
else if(i2>r) qq3Qd,$Z
data[cur]=temp[i1++]; U]EuDNkO{
else if(temp[i1] data[cur]=temp[i1++]; zRE8299%z
else UA4d|^ev
data[cur]=temp[i2++]; 4?M3#],'h
} Xb:BIp!e
} fA0=Y,pzv
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} NV(4wlh)y
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改进后的归并排序: ,W8Iabi^
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package org.rut.util.algorithm.support; @mRrA#E#{
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import org.rut.util.algorithm.SortUtil; n9fA!Wic
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/** bok 74U]
* @author treeroot yP9wYF^A\
* @since 2006-2-2 }d\Tk(W
* @version 1.0 f3>6:(
*/ v:Z4z6M-
public class ImprovedMergeSort implements SortUtil.Sort { N?{1'=Om
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private static final int THRESHOLD = 10; +y4AUU:Q
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/* bKMR7&e.Ep
* (non-Javadoc) v;}`?@G
* [x p,&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !5SQN5K
*/ )Z]y.W )
public void sort(int[] data) { 6?.pKFBZ
int[] temp=new int[data.length]; u#@{%kPW
mergeSort(data,temp,0,data.length-1); HGQ?(2] 8$
} ^8l3j4
3?Eoj95w!
private void mergeSort(int[] data, int[] temp, int l, int r) { SP?U@w%}
int i, j, k; z>p`!-'ID
int mid = (l + r) / 2; VMye5 P
if (l == r) *:tjxC
return; :Ip:sRz
if ((mid - l) >= THRESHOLD) jM1%6
mergeSort(data, temp, l, mid); ]F*a PV
else CndgfOF
insertSort(data, l, mid - l + 1); 27 145
if ((r - mid) > THRESHOLD) ;!JX-J q
mergeSort(data, temp, mid + 1, r); Li-(p"
else C| L^Ds0
insertSort(data, mid + 1, r - mid); }wOpPN[4
:{WrS
for (i = l; i <= mid; i++) { 'bI ~61{A
temp = data; }B9~X
} {29S`-|P
for (j = 1; j <= r - mid; j++) { #DK3p0d
temp[r - j + 1] = data[j + mid]; waWKpk1Wo
} ^g-t#O lD?
int a = temp[l]; >AzWM
.r
int b = temp[r]; +5t
bK
for (i = l, j = r, k = l; k <= r; k++) { [&pW&>p3
if (a < b) { 9ze| s^
data[k] = temp[i++]; oS#'u1k
a = temp; {pb9UUP2
} else { lHKf#|
data[k] = temp[j--]; -?YT Q@ W
b = temp[j]; 5%Oyvt]}2
} b~r{J5x@
} W\qLZuQ
} #3Ej0"A@-B
!H1tBg]5
/** rx6-~0!eI=
* @param data A6NxM8ybn+
* @param l ;w6fM
* @param i O%JsUKV
*/ E<<p_hX8R
private void insertSort(int[] data, int start, int len) { Yb%-tv:
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .-KtB(t
} ]KXMGH_
} % nmY:}um
} [l':G ]
} y5/'!L)g
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堆排序: H\| ]!8w5Z
V'"I9R'1
package org.rut.util.algorithm.support; K/2. 1o;9
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import org.rut.util.algorithm.SortUtil; *j/S4qG
Cl6m$YUt
/** B+Y5b5+wOQ
* @author treeroot Z%+BWS3YqY
* @since 2006-2-2 1X::0;3
* @version 1.0 7k]RO
*/ l 70,Jo?78
public class HeapSort implements SortUtil.Sort{ i>Fvmw
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/* (non-Javadoc) 1^L`)Up
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JYwyR++uo
*/ >sQ2@"y)s2
public void sort(int[] data) { w!WRa8C
MaxHeap h=new MaxHeap(); a(@p0YpKT
h.init(data); =9pw uH
for(int i=0;i h.remove(); Pknc[h},
System.arraycopy(h.queue,1,data,0,data.length); |As2"1_f
} H\fcY p6
Sk/#J!T8{
private static class MaxHeap{ (S
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]^:hyOK
void init(int[] data){ Re*|$r#
this.queue=new int[data.length+1]; &:c:9w
for(int i=0;i queue[++size]=data; F<Hqo>G
fixUp(size); 4L5o\'X
} ieo|%N{'
} #M5_em4kN
i s L{9^
private int size=0; {[2tG U9
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private int[] queue; "F-Y^
E
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public int get() {
c6Lif)4
return queue[1]; l#D-q/k?
} z wL3,!t
A3AP51
!
public void remove() { M o}H_8y
SortUtil.swap(queue,1,size--); T&r +G!2
fixDown(1); N%9h~G
} 1$$37?FE
file://fixdown 5M%,N-P^
private void fixDown(int k) { G HD^%)T5^
int j; d/XlV]#2x\
while ((j = k << 1) <= size) { A7k'K4
if (j < size %26amp;%26amp; queue[j] j++; O)`fvpVU
if (queue[k]>queue[j]) file://不用交换 d5DP^u
break; $]@O/[
SortUtil.swap(queue,j,k); gbm0H-A:*
k = j; }B y)y;~
} 3{N\A5~
} }A{_L6qx
private void fixUp(int k) { of9q"h
while (k > 1) { ~~PgF"v
int j = k >> 1; M@|w[ydQG
if (queue[j]>queue[k]) J &!B|TS
break; S|"Fgoj r
SortUtil.swap(queue,j,k); fNkuX-om
k = j; C"6Amnj
} L@w0N)P<!{
} /7bw: h;
ht?CHUu
} /ZHO>LNN|
D"L|"qJ
} cV-i*L4X
P7z:3o.
SortUtil: VS?dvZ1cC
P:
n# S %
package org.rut.util.algorithm; D7)(D4S4
A j,]n>{
import org.rut.util.algorithm.support.BubbleSort; ],n%Xp
import org.rut.util.algorithm.support.HeapSort; a`#S|'oatC
import org.rut.util.algorithm.support.ImprovedMergeSort; 0pD
W _
import org.rut.util.algorithm.support.ImprovedQuickSort; 1h2H1gy5I3
import org.rut.util.algorithm.support.InsertSort; Vo%Yf9C
import org.rut.util.algorithm.support.MergeSort; *|mz_cKu
import org.rut.util.algorithm.support.QuickSort; kLJlS,nh\r
import org.rut.util.algorithm.support.SelectionSort; wG+=}1X
import org.rut.util.algorithm.support.ShellSort; o]A XT8
;Xqn-R
/** =f>HiF
* @author treeroot B={/nC}G~
* @since 2006-2-2 E*BSfn&i
* @version 1.0 W9dYljnZ8i
*/ q69H^E=
public class SortUtil { Y;} 2'"
public final static int INSERT = 1; yz?q(]
public final static int BUBBLE = 2; @rF/]UJ
public final static int SELECTION = 3; 1!!\+
c2*
public final static int SHELL = 4; RU6KIg{H
public final static int QUICK = 5; Jy9bY
public final static int IMPROVED_QUICK = 6; r*chL&7
public final static int MERGE = 7; dLZjB(0eO
public final static int IMPROVED_MERGE = 8; 0 h22V$
public final static int HEAP = 9; >9=:sSQu
Qm<
gb+
public static void sort(int[] data) { +@0TMK,P
sort(data, IMPROVED_QUICK); yO=p3PV d
} r@iASITX
private static String[] name={ u)v$JpNE
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !i^]UN
}; }qAVN
|Ab{H%
private static Sort[] impl=new Sort[]{ ibXe"X/_
new InsertSort(), Txo@U
new BubbleSort(), c5("-xB
new SelectionSort(), ~b Rd)1
new ShellSort(), [(|^O>k8c
new QuickSort(), g5y;?fqJ
new ImprovedQuickSort(), JkU1daTe
new MergeSort(), [Eu];
new ImprovedMergeSort(), ltoqtB\s
new HeapSort() r0\?WoF2C
}; bj}=8k0
Vv8_\^g]
public static String toString(int algorithm){ /PXioiGcs
return name[algorithm-1]; zie=2
} <W*xshn
g` [` P@
public static void sort(int[] data, int algorithm) { yyP'Z~0
impl[algorithm-1].sort(data); j$vK<SF
} Ra[>P _
dx@QWTNE
public static interface Sort { M;KA]fmc
public void sort(int[] data); rgqQxe=
} 94Ud@F9d5
'a#mViPTQ)
public static void swap(int[] data, int i, int j) { f"Vgefk
int temp = data; A " S/^<
data = data[j]; %&+TbDE+T
data[j] = temp; P]Xbjs<p
} 1CkdpYjsj
} 1{Jb"