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。 a24 AmoWx
插入排序: NT*r7_e
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package org.rut.util.algorithm.support; T2<%[AF0
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import org.rut.util.algorithm.SortUtil; 0GrM:Lh y
/** YPI)^ }
* @author treeroot 2L 1,;
* @since 2006-2-2 c#}K,joeU
* @version 1.0 Q l)hIf$Oo
*/ `e
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public class InsertSort implements SortUtil.Sort{ B ??07j
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/* (non-Javadoc) $N)G:=M!s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {m>ylE
*/ kaekH*m~
public void sort(int[] data) { *C5`LgeX
int temp; ulIEx~qP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5F~l;zT
} \6SjJ]o>
} ]qv0Y~+`-K
} Yu3S3aRE
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} rvd$4l^
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冒泡排序: %|(c?`2|
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package org.rut.util.algorithm.support; p
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import org.rut.util.algorithm.SortUtil; zk8)!Af
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/** $C\ETQ@
* @author treeroot qXW\/NT"p<
* @since 2006-2-2 pVy=rS-
* @version 1.0 &su'znLV
*/ TSP%5v;Dh
public class BubbleSort implements SortUtil.Sort{ vNGE]+QX
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/* (non-Javadoc) D:/ n2_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gfg,V.:
*/ *tF~CG$r
public void sort(int[] data) { wL?Up>fr
int temp; v&YeQC>
for(int i=0;i for(int j=data.length-1;j>i;j--){ Bxm,?=h
if(data[j] SortUtil.swap(data,j,j-1); WMa0L&C~v
} MMFwT(l<1
} $gBQ5Wd
} ZiJF.(JS
} ?ZRF]\dP]
p5fr}#en
} lWId
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选择排序: 4@?0wV
j HHWq>=d
package org.rut.util.algorithm.support; :jl*Y-mM
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import org.rut.util.algorithm.SortUtil;
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/** ccuGM W G*
* @author treeroot [b3!H{b#
* @since 2006-2-2 QF"7.~~2
* @version 1.0 MuY:(zC%
*/ >q:%?mi
public class SelectionSort implements SortUtil.Sort { crM5&L9zF
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/* %hnBpz
* (non-Javadoc) r<+C,h;aww
* a+^`+p/5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AatSN@,~z
*/ ,5n!a.T
public void sort(int[] data) { }GB~3
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int temp; jfxNV2[
for (int i = 0; i < data.length; i++) { S 5S\zTPIf
int lowIndex = i; 6ZQ |L=Ytp
for (int j = data.length - 1; j > i; j--) { v03cQw\"WE
if (data[j] < data[lowIndex]) { 6$k#B ~~
lowIndex = j; EMmgX*iu@
} p'/\eBhG]=
} \cIN]=#
SortUtil.swap(data,i,lowIndex); gpV4qDXV
} EjR(AqZY
} Zo3!Hs ZA
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} 7]h %?W!
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Shell排序: 9jkz83/+<
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package org.rut.util.algorithm.support; QJ2]8K)+C
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import org.rut.util.algorithm.SortUtil; v/`D0g-uX)
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/** c?A$Y?|9
* @author treeroot }\"EI<$s
* @since 2006-2-2 3Zb%-_%j
* @version 1.0 a('0l2e<u9
*/ &GP(yj]
public class ShellSort implements SortUtil.Sort{ /s\ mV
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/* (non-Javadoc) 4era5=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) O0Cz n
*/ YJJ1N/Z1
public void sort(int[] data) { AjVC{\Ik
for(int i=data.length/2;i>2;i/=2){ m!V,W*RNr
for(int j=0;j insertSort(data,j,i); k"N>pjgd$
} yE$PLM
} R}&?9tVRR
insertSort(data,0,1); :;k?/KU7
} PF{uaKWk
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/** \QvGkcDc{
* @param data boo361L
* @param j > G\0Z[<v,
* @param i oB:7R^a
*/ \`n(JV
private void insertSort(int[] data, int start, int inc) { l;; 2\mL?
int temp; Y6jyU1>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6j%%CWU{~
} U4 !bW
} #"gt&t9Q
} "<CM'R
}.&nEi`
} clE9I<1v
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快速排序: ^)AECn
V*p[6{U0
package org.rut.util.algorithm.support; n ay\)
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import org.rut.util.algorithm.SortUtil; [EAOk=X
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/** 'oa.-g 5
* @author treeroot 5nG\J
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* @since 2006-2-2 "Lp.*o
* @version 1.0 W5R/Ub@g
*/ m}]{Y'i]R
public class QuickSort implements SortUtil.Sort{ &;BhL%)}
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/* (non-Javadoc) _H+]G"k/r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x@-K
*/ 5aQ)qUgAW
public void sort(int[] data) { i fsh(^N
quickSort(data,0,data.length-1); GkAd"<B
} -X.#Y6(
private void quickSort(int[] data,int i,int j){ ~;"eNg{T
int pivotIndex=(i+j)/2; UTA|Ps$
file://swap k[Em~>m
SortUtil.swap(data,pivotIndex,j); ` H'G"V
]iV]7g8:
int k=partition(data,i-1,j,data[j]); <5zR-UA>
SortUtil.swap(data,k,j); oC&}lp)q
if((k-i)>1) quickSort(data,i,k-1); omfX2Oa2
if((j-k)>1) quickSort(data,k+1,j); N*IroT3
ti5fsc
} aBAoSn
/** e@'x7Zzh
* @param data 8FsQLeOE
* @param i lu#a.41
* @param j }z]d]
* @return UF9={fN1
*/ A c_P^
private int partition(int[] data, int l, int r,int pivot) { -laH^<jm5
do{ ql?w6qFs]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |_53So:g
SortUtil.swap(data,l,r); > X~\(|EM
} #qd!_oN
while(l SortUtil.swap(data,l,r); Jz8P':6[
return l; 4H8r[
} (Jq m9
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} Q2fxsa[
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改进后的快速排序: RXXHg
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package org.rut.util.algorithm.support; 5hE#y]pfN
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import org.rut.util.algorithm.SortUtil; 1jC85^1Taq
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/** zw<<st Bp
* @author treeroot uP9b^LEoN
* @since 2006-2-2 2CC"Z
* @version 1.0 h,[L6-n
*/ z %}"=
public class ImprovedQuickSort implements SortUtil.Sort { o$@/@r
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private static int MAX_STACK_SIZE=4096; XT^=v6^H
private static int THRESHOLD=10; ]}`t~#Irz
/* (non-Javadoc) -jjB2xP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MTYV~S4/
*/ ^#5'` #t
public void sort(int[] data) { 9SC1A -nF
int[] stack=new int[MAX_STACK_SIZE]; d V%o:@Z
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int top=-1; AbNr]w&pXC
int pivot; _a&gbSQv
int pivotIndex,l,r; &v:zS$m>
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stack[++top]=0; e N`+ r
stack[++top]=data.length-1; TOiLv.Dor
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while(top>0){ [n9l[dN
int j=stack[top--]; M^ *~?9
int i=stack[top--]; BB}WfA
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pivotIndex=(i+j)/2; nOC\ =<Nsg
pivot=data[pivotIndex]; 2I:P}!
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SortUtil.swap(data,pivotIndex,j); 0+mR
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file://partition m{>1#1;$t
l=i-1; Z|K HF"
r=j; uGAQt9$>_
do{ Rk9n,"xpv
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
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SortUtil.swap(data,l,r); aG1Fj[,
} -~z@W3\
while(l SortUtil.swap(data,l,r); T4x%3-4;
SortUtil.swap(data,l,j); .XgY&5Qk
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if((l-i)>THRESHOLD){ z,;XWv?
stack[++top]=i; hw"2'{"II
stack[++top]=l-1; /5 z+N(RFC
} GUL~k@:_k
if((j-l)>THRESHOLD){ WD4"ft
stack[++top]=l+1; :r{-:
stack[++top]=j; /CALXwL
} YusmMsN?
MTt8O+J?P~
} 9>{ml&$
file://new InsertSort().sort(data); k3&68+
insertSort(data); ]Mq-67
} H[w';u[%
/** dpz@T>MS=
* @param data FqyxvL.
*/ ,{IDf
private void insertSort(int[] data) { (bm>
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int temp; Dp['U
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /'oo;e
} 9ad`q+kY
} xkf2;
} f)vnm*&-
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DPA
} B\D)21Ik}%
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归并排序: o4: e1
54{E&QvL8o
package org.rut.util.algorithm.support; G{?`4=K
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import org.rut.util.algorithm.SortUtil; RA a1^Qb
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/** `C_qqf
* @author treeroot h[!@8
* @since 2006-2-2 tIn`L6b
* @version 1.0 CeU=A9
*/ v$\<L|
public class MergeSort implements SortUtil.Sort{ m p_7$#{l
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/* (non-Javadoc) ['>ZC3?"h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !0pK8k&MG
*/ Bor_(eL^
public void sort(int[] data) { RaLV@>jPm
int[] temp=new int[data.length]; Z<<=2Xl(
mergeSort(data,temp,0,data.length-1); uPho|hDp
} Y'1
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private void mergeSort(int[] data,int[] temp,int l,int r){ ftmPdha%+
int mid=(l+r)/2; bOU"s>?
if(l==r) return ; Sa)sDf1+`
mergeSort(data,temp,l,mid); aid1eF
mergeSort(data,temp,mid+1,r); AyUw
for(int i=l;i<=r;i++){ {zd[8TJ~xa
temp=data; +DQUL|\
} 8@ f!,!Wn
int i1=l; \ v+>qY<q
int i2=mid+1; Z=$-S(>J
for(int cur=l;cur<=r;cur++){ &g}P)xr
if(i1==mid+1) d@^%fVhG
data[cur]=temp[i2++]; Xz:ha>}C
else if(i2>r) X}G$ON
data[cur]=temp[i1++]; m{$+
else if(temp[i1] data[cur]=temp[i1++]; v`L]dY4,
else M8:i ]
data[cur]=temp[i2++]; D,*|:i
}
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} VZ IY=Q>g
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} &b>&XMIK
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改进后的归并排序: )AEtW[~D
J e|
package org.rut.util.algorithm.support; 3ouy-SQ
gdSqG2/&
import org.rut.util.algorithm.SortUtil; >+<b_q|P
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/** 7L:Eg
* @author treeroot dHAT($QG
* @since 2006-2-2 `uLr^G=;
* @version 1.0 Qm7];,
*/ Uufig)6
public class ImprovedMergeSort implements SortUtil.Sort { ?zP
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private static final int THRESHOLD = 10; [&P@0Fn
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/* yX*$PNL5w
* (non-Javadoc) g :B4zlKG
* }UcdkKq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2oc18#iG(
*/ jLn#%Ia}
public void sort(int[] data) { |<3x`l-`
int[] temp=new int[data.length]; sWse
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mergeSort(data,temp,0,data.length-1); mVS^HQ:
} y5c\\e
4dN <B U
private void mergeSort(int[] data, int[] temp, int l, int r) { T)<^S(57
int i, j, k; 96;5
int mid = (l + r) / 2; :!cK?H$+
if (l == r) `, ]ui*
return; t%e<]2-8
if ((mid - l) >= THRESHOLD) &2.DZ),L
mergeSort(data, temp, l, mid); y4@gw.pt
else IP{$lC
insertSort(data, l, mid - l + 1); >h:'Z*9
if ((r - mid) > THRESHOLD) ^uG^>Om*
mergeSort(data, temp, mid + 1, r); ]Ue
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else IDf\!QGx
insertSort(data, mid + 1, r - mid); l -nH
9%SC#V'
for (i = l; i <= mid; i++) { 569p/?
temp = data; }&L%c>
} ~}{_/8'5
for (j = 1; j <= r - mid; j++) { PP\ bDEPy
temp[r - j + 1] = data[j + mid]; -Op^3WWyY
} 4 7mT
int a = temp[l]; ZXo;E
int b = temp[r]; ~s-gnp
for (i = l, j = r, k = l; k <= r; k++) { tBJ4lb
if (a < b) { s8's(*]
data[k] = temp[i++]; )2l @%?9
a = temp; Yj bp:
} else { ,)dlL tUm
data[k] = temp[j--]; /zXOtaG
b = temp[j]; IIT[^_g
} 6`6 / 2C$%
} NNr6~m)3v
} \}4*}Lr
b{aB^a:f=L
/** 04}8x[t
* @param data )\D{5j
* @param l 2[(~_VJ
* @param i <@GO]vY
*/ 2?6]Xbs{
private void insertSort(int[] data, int start, int len) { xR
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j
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} g yV>k=B
} 'wYIJK~1
} /TPtPq<7:#
} N.q*jY=X|
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堆排序: !&b|
[b
p/nATvh$
package org.rut.util.algorithm.support; o
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2?~s
import org.rut.util.algorithm.SortUtil; ZI1]B944ni
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/** 'ZI8nMY
* @author treeroot _x""-X~OL
* @since 2006-2-2 }ssja,;
* @version 1.0 }6.@
*/ Ua:@,};
public class HeapSort implements SortUtil.Sort{ KIv_
AMr
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/* (non-Javadoc) R@pY+d9qp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <'UGYY\wg0
*/ {PxFG<^U
public void sort(int[] data) { ]&P\|b1*g
MaxHeap h=new MaxHeap(); {K"hlu[
h.init(data); H"UJBO>$
for(int i=0;i h.remove(); f@hM ^%
System.arraycopy(h.queue,1,data,0,data.length); c'3N;sZ*B
} ZB)R4
?_bFe![q
private static class MaxHeap{ ;ltk}hJ]
8kdJtEW3
void init(int[] data){ vOz1& |;D
this.queue=new int[data.length+1]; -8FUR~WJ
for(int i=0;i queue[++size]=data; Nb9GrYIS
fixUp(size); >"=DN5w
,S
} |LbAW/9a
} ^Y+C!I
*{+{h;p
private int size=0; #O;JV}y
rq!*unJ
private int[] queue; a9p:k
]{
! #!
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public int get() { 6YNL4HE?
return queue[1]; qF`6l(
} YI7M%B9Lj
Mth:V45G|
public void remove() { ti%RE:*
SortUtil.swap(queue,1,size--); %aw.o*@:
fixDown(1); TvDC4tm-:
} kD;pj3o&"2
file://fixdown ^Z;zA@[wt
private void fixDown(int k) { \B84
int j; ZfqN4
while ((j = k << 1) <= size) { 6MY<6t0a
if (j < size %26amp;%26amp; queue[j] j++; t>?tWSNf
if (queue[k]>queue[j]) file://不用交换 *n EkbI/
break; ^5Lk}<utw
SortUtil.swap(queue,j,k); n6WKk+
k = j; 8aW El%
} h
':ZF
} lTq"j?#E]m
private void fixUp(int k) { !YjxCx
while (k > 1) { 7CuZ7!>$
int j = k >> 1; ZGR5"el!
if (queue[j]>queue[k]) f4Y)GO<R]
break; HW~-GcU-o
SortUtil.swap(queue,j,k); V+lF|CZb5
k = j; xIa7F$R 0
} D 6y,Q
} Rb0I7~Z%'d
0]
} oS..y($TI
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} 1]~w?)..'
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SortUtil: u>:(MARsR
@
G)yz!H
package org.rut.util.algorithm; ;H~<.QW
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import org.rut.util.algorithm.support.BubbleSort; 1F`jptVQ\G
import org.rut.util.algorithm.support.HeapSort; Px=@Tw N,
import org.rut.util.algorithm.support.ImprovedMergeSort; HVHv,:bPo
import org.rut.util.algorithm.support.ImprovedQuickSort; qJdlZW<
import org.rut.util.algorithm.support.InsertSort; )'U0n`=
import org.rut.util.algorithm.support.MergeSort; A/'po_'uy
import org.rut.util.algorithm.support.QuickSort; ]1<GZ`
import org.rut.util.algorithm.support.SelectionSort; 9/(jY$Ar
import org.rut.util.algorithm.support.ShellSort; v}Ju2 }IK
rjK`t_(=
/** u7[}pf$}
* @author treeroot 4_=2|2Wz[
* @since 2006-2-2 w(6n
* @version 1.0 <8^x
Mjc
*/ k[ro[E
public class SortUtil { ,.W7Z~z
public final static int INSERT = 1; E(PBV
public final static int BUBBLE = 2; 8\lh'8
public final static int SELECTION = 3; ciS,
public final static int SHELL = 4; =zyA~}M2
public final static int QUICK = 5; <R /\nY Xz
public final static int IMPROVED_QUICK = 6; >UaQ7CRo
public final static int MERGE = 7; /gZyl|kdy
public final static int IMPROVED_MERGE = 8; vNv!fkl
public final static int HEAP = 9; !&rd#ZBn
~pQN#C)CO>
public static void sort(int[] data) { MWh Y&I+
sort(data, IMPROVED_QUICK); a^p#M
} yk`qF'4]
private static String[] name={ )e,O+w"
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" RTm/-6[N
}; 9dhEQ=K{3
9VnBNuT
private static Sort[] impl=new Sort[]{ IQ
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new InsertSort(), 2aM7zP[Z
new BubbleSort(), |]*3En:
new SelectionSort(), R2Fjv@Egk
new ShellSort(), @m#OhERv
new QuickSort(), =+!l8o&o,
new ImprovedQuickSort(), Fye>H6MU
new MergeSort(), ;ItH2Lw<&
new ImprovedMergeSort(), K"0IW A
new HeapSort() ;v:(
}; {?H5Pw>{%h
;KlYiu
public static String toString(int algorithm){ hWT
jN
return name[algorithm-1]; Ku75YFO,5
} qcj {rG18
-d\sKc
public static void sort(int[] data, int algorithm) { "r-P[EKpL
impl[algorithm-1].sort(data); pUXoSnIq:
} \#_ymM0
gYB!KM *v
public static interface Sort { }xk(aM_
public void sort(int[] data); 3#>W\_FY*D
} oBkhb
sE pI)9
public static void swap(int[] data, int i, int j) { !ajBZ>Q
int temp = data; `5IrV&a
data = data[j]; Cq\XLh `
data[j] = temp; <(xqw<)
} y?<KN0j
} %y6(+I#P