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。 "R^0eNv$
插入排序: mWTV)z57
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package org.rut.util.algorithm.support; >)bn #5
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import org.rut.util.algorithm.SortUtil; ~n;U5hcB
/** TT^L)d
* @author treeroot TEQs9-Uy
* @since 2006-2-2 ?fX`z(Z
* @version 1.0 8fA8@O}
*/ @Px_\w
public class InsertSort implements SortUtil.Sort{
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/* (non-Javadoc) Bk@&k}0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @dc4v_9
*/ {r?+PQQ#
public void sort(int[] data) { L0>7v
int temp; WZN0`Od
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ntlbn&lc;D
} i|!W;2KL5
} 0?*":o30
} d@ef+-
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} `>u^Pm
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冒泡排序: ?0?+~0sI
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package org.rut.util.algorithm.support; JZ)w
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import org.rut.util.algorithm.SortUtil; &
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/** 6ag0c&k
* @author treeroot ~\u~>mtchu
* @since 2006-2-2 rO]2we/B,4
* @version 1.0 juB /?'$~
*/ SI/3Dz[
public class BubbleSort implements SortUtil.Sort{ E=]$nE]b
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/* (non-Javadoc) WDF6.i ?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x.>&|Ej
*/ UV\&9>@L
public void sort(int[] data) { [<.dOe7|
int temp; 8gJg7RxL
for(int i=0;i for(int j=data.length-1;j>i;j--){ z-m:l;
if(data[j] SortUtil.swap(data,j,j-1); p4@0Dz`Q
} ;CDa*(e
} LfMN 'Cb
} `=E4J2"
} zO((FQ
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} s]Z++Lh<{
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选择排序: &IP`j~b
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package org.rut.util.algorithm.support; l} W">
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import org.rut.util.algorithm.SortUtil; }b+$S'`Bv
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/** K_-S`-eH
* @author treeroot w_*$wVl
* @since 2006-2-2 O
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* @version 1.0 |`O210B@
*/ B3Ws)nF"
public class SelectionSort implements SortUtil.Sort { 6 -IThC
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/* v*^'|QyM7
* (non-Javadoc) a 1~@m[
* b$Q#Fv&P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * & : J
*/ W.>}5uVl6
public void sort(int[] data) { smPZ%P}P+c
int temp; h%&2M58:
for (int i = 0; i < data.length; i++) { bq z*90
int lowIndex = i; K
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for (int j = data.length - 1; j > i; j--) { JnS@}m
if (data[j] < data[lowIndex]) { ]Uul~T
lowIndex = j; (S8hr,%n
} ;eC8|
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} ,EH^3ODD
SortUtil.swap(data,i,lowIndex); CJt(c,!z
} 6JD~G\$
} ^]9.$$GU\A
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} 7upN:7D-
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Shell排序: bf/z
T0
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package org.rut.util.algorithm.support; =W"9a\m
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import org.rut.util.algorithm.SortUtil; qjH/E6GGg
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/** .x_F4 #Ka
* @author treeroot }T"&4Rvs2R
* @since 2006-2-2 v\-7sgZR
* @version 1.0 35Fs/Gf-n
*/ >+Y@rj2
public class ShellSort implements SortUtil.Sort{ G3gEL)b*
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/* (non-Javadoc) ^"+Vx9H"{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7w?N-Q$y
*/ CUx[LZR7m
public void sort(int[] data) { -|GX]jx(Y
for(int i=data.length/2;i>2;i/=2){ m5lTf
for(int j=0;j insertSort(data,j,i); sK7b4gmK
} ,R=)^Gh{
} >Dq&[9,8
insertSort(data,0,1); JxQGL{)
>
} Ki\J)l
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/** :</KgR0I
* @param data y~<_ux,
* @param j oEsqLh9a|
* @param i M8|kmF\B
*/ 6o~CX
private void insertSort(int[] data, int start, int inc) { '19kP.
int temp; jUB`=d|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .:iO$wjp5
} Q6d>tqW hq
} ?,
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} F<(?N!C?@
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} 66HxwY3a
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快速排序: ~;I'.TW
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package org.rut.util.algorithm.support; %Ktlez:S
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import org.rut.util.algorithm.SortUtil; RIq\IQ_|
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/** OGPrjL+
* @author treeroot 0[1/#0$
* @since 2006-2-2 hv )d
* @version 1.0 mf\@vI
*/ ]
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public class QuickSort implements SortUtil.Sort{ vzZ"TSP
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/* (non-Javadoc) =6[R,{|C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]GXE2A_i;
*/ |?ma?
public void sort(int[] data) { K&;/hdS=F
quickSort(data,0,data.length-1); V(OD^GU
} s;xErH@RA
private void quickSort(int[] data,int i,int j){ ^o Q^/v~
int pivotIndex=(i+j)/2; RT"JAJTi/
file://swap F*=}}H/
SortUtil.swap(data,pivotIndex,j); qoOq47F
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int k=partition(data,i-1,j,data[j]); 3'[
g2JR
SortUtil.swap(data,k,j); .%_=(C<E
if((k-i)>1) quickSort(data,i,k-1); :jGgX>GG
if((j-k)>1) quickSort(data,k+1,j); TTz_w-68
[+b&)jN*2
} P;ovPyoO
/** DaqpveKa
* @param data F,JqHa9
* @param i 89J7hnJC
* @param j o*xft6U
* @return o<7'(Pz
*/ d?4-"9Y
private int partition(int[] data, int l, int r,int pivot) { Fy^MI*}BZ
do{ en29<#8TO
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {r1}ACw{
SortUtil.swap(data,l,r); UKf0cU
} ?xtP\~
while(l SortUtil.swap(data,l,r); xU'% 6/G
return l; V)cL=4G
} Mgg m~|9)
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} S3?U-R^`
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改进后的快速排序: I|)U>bV
9l}G{u9a
package org.rut.util.algorithm.support; nrCr9#
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import org.rut.util.algorithm.SortUtil; F^X:5g~K
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/** yQquGu
* @author treeroot </|m^$v
* @since 2006-2-2 b!z kQ?h
* @version 1.0 m]'P3^<{P
*/ n!%'%%o2v
public class ImprovedQuickSort implements SortUtil.Sort { '<&rMn
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private static int MAX_STACK_SIZE=4096; $'Qv
{
private static int THRESHOLD=10; <>fT_
/* (non-Javadoc) >jpkR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Hkb)Wu
*/ F+?g0w['
public void sort(int[] data) { NSQ#\:3:S
int[] stack=new int[MAX_STACK_SIZE]; tQcn%CK
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int top=-1; <6!/B[!O=
int pivot; X5c)T}pyv
int pivotIndex,l,r; 6|]e}I@<2
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}l
stack[++top]=0; SJ8|~,vL
stack[++top]=data.length-1; Oi\,clR^[o
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while(top>0){ swG!O}29OX
int j=stack[top--]; 2q%vd=T
int i=stack[top--]; ;<nQl,2N
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pivotIndex=(i+j)/2; yIma7H@=L
pivot=data[pivotIndex]; ,=`iQl3(y/
&9\8IR >
SortUtil.swap(data,pivotIndex,j); e2L4E8ST<
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file://partition Y%@a~|
l=i-1; vABUUAo!Jr
r=j; 3V@!}@y,F6
do{ w*B4>FYg
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .X{U\{c| a
SortUtil.swap(data,l,r); aui3Mq#f
} Iz[wrtDI1
while(l SortUtil.swap(data,l,r); bSS=<G9
SortUtil.swap(data,l,j); O@sJ#i>
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if((l-i)>THRESHOLD){ Bngvm9k3
stack[++top]=i; CL<m+dW%*
stack[++top]=l-1; eX <@qa4<
} lH%-#2]
if((j-l)>THRESHOLD){ OjfumZL#
stack[++top]=l+1; `6 ?.ihV
stack[++top]=j; "i~~Q'=7
} )UAkg
ZA'Qw2fF0
} ZMmf!cKY:'
file://new InsertSort().sort(data); "E%3q 3|"l
insertSort(data); 6G]hsgro
} c^`(5}39v
/** Pze{5!
* @param data `E-cf 7%
*/ 0M 5m8
private void insertSort(int[] data) { FmC
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int temp; \Ea(f**2B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Fps:6~gD
} i[m-&
} M 3c
} 9hdz<eFL
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} }<g-0&GLm
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归并排序: <F-W fR
C,nU.0
package org.rut.util.algorithm.support; W,ik ;P\
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import org.rut.util.algorithm.SortUtil; `nEe-w^9)I
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/** ?qR11A};tG
* @author treeroot 'uU{.bq
* @since 2006-2-2 4-Cca
* @version 1.0 `rZS\A
*/ 1$1P9x@H
public class MergeSort implements SortUtil.Sort{ CyD)=e{
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/* (non-Javadoc) fm&pxQjg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6;#Rd|
*/ ]c\d][R N
public void sort(int[] data) { N_| '`]D
int[] temp=new int[data.length]; )@a_|q@V
mergeSort(data,temp,0,data.length-1); rxQ&N[r2
} ]]8^j='P'
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private void mergeSort(int[] data,int[] temp,int l,int r){ &~#y-o"
int mid=(l+r)/2; o6A1;e
if(l==r) return ; iBaz1pDc
mergeSort(data,temp,l,mid); &20}64eW%
mergeSort(data,temp,mid+1,r); ":V,&o9n
for(int i=l;i<=r;i++){ Ff{dOV.i
temp=data; gMUCVKGf
} E% d3}@
int i1=l; pW1(1M)[%Z
int i2=mid+1; *PF=dx<8
for(int cur=l;cur<=r;cur++){ x5 ?>y{6D
if(i1==mid+1) d.t$VRO
data[cur]=temp[i2++]; ; )rXQm
else if(i2>r) *g!7PzJ'
data[cur]=temp[i1++]; !nt[J$.z^
else if(temp[i1] data[cur]=temp[i1++]; 40Hm+Ge
else i4H,Ggb
data[cur]=temp[i2++]; ,@0D_&JAl
} ^@OdY&5^
} J `
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} ~9DD=5\
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改进后的归并排序: -mY,nMDb
8KHT"uc'*J
package org.rut.util.algorithm.support; aYws{Vii
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import org.rut.util.algorithm.SortUtil; C9L_`[9DO
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/** MyaJhA6c
* @author treeroot =U,mzY(
* @since 2006-2-2 yrQfPR
* @version 1.0 s0*@zn>h
*/ eq,`T;
public class ImprovedMergeSort implements SortUtil.Sort { O8)N`#1>+
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private static final int THRESHOLD = 10; {W$K@vuV;?
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/* -)Of\4kx
* (non-Javadoc) y{Vh?Z<E
* SmVL?wf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B<oBo&uA
*/ ^vha4<'-qG
public void sort(int[] data) { e]-%P(}Z
int[] temp=new int[data.length]; oUx%ra{
mergeSort(data,temp,0,data.length-1); 0Ait7`
} M*2
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3H,?ZFFGz
private void mergeSort(int[] data, int[] temp, int l, int r) { Er@OmNT
int i, j, k; 66-G)+4
int mid = (l + r) / 2; R(p3*t&n
if (l == r) U6F1QLSLz
return; Cxra(!&
if ((mid - l) >= THRESHOLD) {.o@XP,.
mergeSort(data, temp, l, mid); 3{9d5p|\i
else }va>jfy
insertSort(data, l, mid - l + 1); yoG*c%3V?
if ((r - mid) > THRESHOLD) 4}F~h
mergeSort(data, temp, mid + 1, r); yZkS
else {3!E8~
insertSort(data, mid + 1, r - mid); t[o_!fmxZ
a6!|#rt
for (i = l; i <= mid; i++) { ,)ZI&BL5
temp = data; r1/9BTPKdJ
} JsHD3
for (j = 1; j <= r - mid; j++) { hO; XJyv
temp[r - j + 1] = data[j + mid]; &gsBbQ+qA
} p> g[: ~
int a = temp[l]; ~|( eh9
int b = temp[r]; FwUgMR*xq
for (i = l, j = r, k = l; k <= r; k++) { `T3B
if (a < b) { #*X\pjZ
data[k] = temp[i++]; Ticx]_+~T
a = temp; bW^C30m
} else { {Bz E
data[k] = temp[j--]; wEC,Mbn
b = temp[j]; b)@rp
} uF+0nv+
} vKBijmE
} 3<HZ)w^B
4d\V=_);r
/** Ui.S)\B
* @param data Y&-%
N
* @param l Uj)Wbe[)p0
* @param i ~3Y4_b5E
*/ c3.;o
private void insertSort(int[] data, int start, int len) { ?OS0.
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); a'(B}B=h
} u(i=-PN_<
} i!EAs`$o`
} {r'+icvLX
} X}H?*'-
U=PTn(2
堆排序: +`tk LvM
p0hE`!
package org.rut.util.algorithm.support; bE?X?[K
=YY 7V!
import org.rut.util.algorithm.SortUtil; -\n%K
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/** quRTA"!E
* @author treeroot K/K|[=bl
* @since 2006-2-2 @Gt.J*!s/
* @version 1.0 ps UT2
*/ \,pObWm
public class HeapSort implements SortUtil.Sort{ jl5&T{z
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/* (non-Javadoc) Ub/ZzAwq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |-L7qZu%
*/ @qEUp7W.?
public void sort(int[] data) { rn/~W[
MaxHeap h=new MaxHeap(); .3&(Y
h.init(data); ")<5VtV
for(int i=0;i h.remove(); /36gf
System.arraycopy(h.queue,1,data,0,data.length); %j.n^7i]^:
} I-#7Oq:Np
)D ~ 5
private static class MaxHeap{ K&eT*JW>
aYn5AP'PH
void init(int[] data){ U7Oa
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this.queue=new int[data.length+1]; 2T(7V[C%9
for(int i=0;i queue[++size]=data; fbD,\ rjT
fixUp(size); cQ
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} G.`},c;A-
} b!bg sd
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private int size=0; #nw+U+qL
h'?v(k!
private int[] queue; <Zvvx
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public int get() { `]^W#6l
return queue[1]; n'0r
(
} .f"1(J8
[S1 b\f#
public void remove() { \*[DR R0
SortUtil.swap(queue,1,size--); huW,kk<]y
fixDown(1); `jSe gG'
} p6V#!5Q
file://fixdown $JUkwsc
private void fixDown(int k) { ja9=b?]0,
int j; Wf^sl
while ((j = k << 1) <= size) { ?U+hse3e~
if (j < size %26amp;%26amp; queue[j] j++; 2vh }:A_
if (queue[k]>queue[j]) file://不用交换 r)#W`A1{A
break; hz*T"HJ]t
SortUtil.swap(queue,j,k); lv9Tq5C
k = j; JOJuGB-d
} fp*6Dv_
} T<"Bb[kH
private void fixUp(int k) { n}t9Nf_
while (k > 1) { F]D{[dBf
int j = k >> 1; *@p"
if (queue[j]>queue[k]) 8d_J9Ho
break; RMiDV^.u`
SortUtil.swap(queue,j,k); UI"UBZZ$
k = j; 2gh=0%|\gx
} |L`U2.hb
} <bb!BS&w
FSm.o?>
} 6aOyI;Ux
/QWXEL/M=
} Y[]I!Bc
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SortUtil: NU3TXO
1DcX$b
package org.rut.util.algorithm; g?Tev^D
/_})7I52
import org.rut.util.algorithm.support.BubbleSort; 0KTO)K
import org.rut.util.algorithm.support.HeapSort; @_?2iN?4Z
import org.rut.util.algorithm.support.ImprovedMergeSort; ar#73f
import org.rut.util.algorithm.support.ImprovedQuickSort; <b.p/uA
import org.rut.util.algorithm.support.InsertSort; QkC*om'/!
import org.rut.util.algorithm.support.MergeSort; o$eCd{HuX
import org.rut.util.algorithm.support.QuickSort; ;mT}Q;F#
import org.rut.util.algorithm.support.SelectionSort; q/@+.q
import org.rut.util.algorithm.support.ShellSort; $}{[_2
Vjs'|%P7
/** {kw%7}!
* @author treeroot ~\<$H'
* @since 2006-2-2 _cE_\Ay
* @version 1.0 KE ?NQMU
*/ G%FZTA6a
public class SortUtil { Le:C8^
public final static int INSERT = 1; [^s;Ggi9
public final static int BUBBLE = 2; G;flj}z
public final static int SELECTION = 3; r{^43g?
public final static int SHELL = 4; CgmAxcK
public final static int QUICK = 5; D =mmBo
public final static int IMPROVED_QUICK = 6; pZ}B/j
public final static int MERGE = 7; n1{[CCee@
public final static int IMPROVED_MERGE = 8; i@.Tv.NZ
public final static int HEAP = 9; 4>i\r
=\|,hg)c
public static void sort(int[] data) { %~x?C4L8
sort(data, IMPROVED_QUICK); ah hl
} "~0`4lo:Xo
private static String[] name={ -fk;Qq3O
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rR :ZTfJs"
}; tT>LOI_z
Jw8?o/1D@
private static Sort[] impl=new Sort[]{ }x\#ul)
new InsertSort(), eA86~M?<o
new BubbleSort(), Rx&O}>"E>l
new SelectionSort(), Er%&y
new ShellSort(), )ds]fvMW]N
new QuickSort(), r'j88)^
new ImprovedQuickSort(), 2H}y1bkW
new MergeSort(), Vj 9X6u}{
new ImprovedMergeSort(), \cCH/
new HeapSort() (;;ji!i
}; ^h$*7u"^y
]t~.?)Ad+2
public static String toString(int algorithm){ tiE|%jOzt
return name[algorithm-1]; [U/h'A.j
} iuGwc086
x<M::")5!V
public static void sort(int[] data, int algorithm) { wpuK?fP
impl[algorithm-1].sort(data); 6ICW>#fI`
} \OtreYi
'mbLK#q
public static interface Sort { hdCd:6
public void sort(int[] data); O*GF/ R8B
} !IdVg $7
uR
:EH.K
public static void swap(int[] data, int i, int j) {
R%RxF=@
int temp = data; &TBFt;
data = data[j]; xws{"m,NX~
data[j] = temp; /nQuM05*Z
} 6" * <0
} OQ hQ!6