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。 GS!7HphR
插入排序: Rds_Cd C
8IX:XDEQ
package org.rut.util.algorithm.support; :Adx7!6
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import org.rut.util.algorithm.SortUtil; h3}gg@Fm
/** U$-;^=;
* @author treeroot yA74Rxl*6
* @since 2006-2-2 9GH11B_A
* @version 1.0 u{Z
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*/
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public class InsertSort implements SortUtil.Sort{ G4VdJ(_
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/* (non-Javadoc) 9KqN .
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C(RZ09,.S
*/ '+@q
public void sort(int[] data) { gj\'1(Ju
int temp; ]Wn^m+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n!nXM
} k7R8Q~4
} N-lo[bDJh
} dKKh ^D`~
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} .Mn+Bd4f
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冒泡排序: jbDap i<
qHAZ)Tz
package org.rut.util.algorithm.support; 51,RbADB
l6YToYzE2
import org.rut.util.algorithm.SortUtil; fV 6$YCf
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/** N2 vA/
* @author treeroot FEd We\E
* @since 2006-2-2 m!Iax]D{
* @version 1.0 tA*hh"9
*/ K GVAP
public class BubbleSort implements SortUtil.Sort{ iyj,0T
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/* (non-Javadoc) J ejDF*Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?u*gKI
*/ n$jOk
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public void sort(int[] data) { MS_@
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int temp; mKsTA;
for(int i=0;i for(int j=data.length-1;j>i;j--){ F5*NK!U
if(data[j] SortUtil.swap(data,j,j-1); F"#8`Ps>
} efK3{
} C(ay7
} Lq-Di|6q
} T)!$-qdz/
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} YY&3M
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选择排序: !I7bxDzK$
,wI$O8"!j
package org.rut.util.algorithm.support; Usa
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import org.rut.util.algorithm.SortUtil; 9JG9;[
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/** (c'=jJX
* @author treeroot h1y6`m9
* @since 2006-2-2 y .+d3
* @version 1.0 lzKJy
*/
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public class SelectionSort implements SortUtil.Sort { j-?zB.jAh
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/* nE~HcxE/
* (non-Javadoc) 500qg({2]
* T:/68b*H\:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FqvMi:F
*/ oicj3xkw?
public void sort(int[] data) { +[=yLE#P%
int temp; yf KJpy
for (int i = 0; i < data.length; i++) { g^CAT1}
int lowIndex = i; S$=e %c
for (int j = data.length - 1; j > i; j--) { !<ae~#]3P
if (data[j] < data[lowIndex]) { w6^X*tE
lowIndex = j; "Yk3K^`1T.
} 7 Q`'1oE?
} $Iu N(#
SortUtil.swap(data,i,lowIndex); EB/.M+~a
} A7/
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} CdTyUl
v Ft]n
} uSAb
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Shell排序: _$W</8<
cH5@Jam
package org.rut.util.algorithm.support; SS4'yaQ
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import org.rut.util.algorithm.SortUtil; nDdF(|Qt
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/** Uf:G,%OYi
* @author treeroot V4('}Q!
* @since 2006-2-2 +
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* @version 1.0 97$1na3gq
*/ #WOb&h
public class ShellSort implements SortUtil.Sort{ 7c:5Ey
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/* (non-Javadoc) 4z~%gt74O]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &HPzm6.3
*/ 33R_JM{
public void sort(int[] data) { /,>@+^ 1
for(int i=data.length/2;i>2;i/=2){ ~-"<)XPe
for(int j=0;j insertSort(data,j,i); >%~E <
} ?z:Xdx\l
} ,| \62B`
insertSort(data,0,1); c{iF
} $WOiXLyCk
X(b"b:j'
/** E!a5-SrR
* @param data "S">#.L
* @param j JD\:bI
* @param i v{R:F
*/ jh3LD6|s}
private void insertSort(int[] data, int start, int inc) { `7;I*|
int temp; p'`SYEY@Z
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); JG2)-x;9
} C ?^si
} :&]THUw
} . PzlhTL7
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} C$Y pk\p
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快速排序: 2iUdTy$
e[3rz%'Q
package org.rut.util.algorithm.support; 1I#S?RSb
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import org.rut.util.algorithm.SortUtil; _;A?w8z
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/** IZ2c<B5&
* @author treeroot R+c
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* @since 2006-2-2 6j]pJ]F6
* @version 1.0 ty8\@l
*/ t/6t{*-w
public class QuickSort implements SortUtil.Sort{ =uZOpeviQ
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/* (non-Javadoc) J,8Wo6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $X.X_
*/ EW* 's(
public void sort(int[] data) { PV2cZ/
quickSort(data,0,data.length-1); jLULf+8&
} hL\gI(B
private void quickSort(int[] data,int i,int j){ HiBw==vlV
int pivotIndex=(i+j)/2; 7p}.r
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file://swap uZyR{~-C
SortUtil.swap(data,pivotIndex,j); VfJbexYT
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int k=partition(data,i-1,j,data[j]); oQrkd:
SortUtil.swap(data,k,j); T~nm Eap
if((k-i)>1) quickSort(data,i,k-1); ZaCUc Px
if((j-k)>1) quickSort(data,k+1,j); *):x K;o
cuJ%;q=;
} P'prp=JD
/** 4= VAJ
* @param data !l7eB@O
* @param i _084GK9{W
* @param j _T\~AwVc<
* @return I2@pkVv3z
*/ o{EWNkmj
private int partition(int[] data, int l, int r,int pivot) { MP Ma
do{ e ;4y5i
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *wml
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SortUtil.swap(data,l,r); (6C%w)8'
} FFT h}>>
while(l SortUtil.swap(data,l,r); k+^-;=u6<
return l; t3TnqA
} a0Y/,S*K
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} E(i<3U"4h[
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改进后的快速排序: K-$gTV
l\=M'D
package org.rut.util.algorithm.support; LB<,(dyh
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import org.rut.util.algorithm.SortUtil; c}nXMA^^
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/** OUY65K
* @author treeroot (
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* @since 2006-2-2 mdu5aL
* @version 1.0 mVYLI!n}0#
*/ 4\%0a,\^
public class ImprovedQuickSort implements SortUtil.Sort { P:z 5/??2S
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private static int MAX_STACK_SIZE=4096; _kR,R"lh
private static int THRESHOLD=10; 7o$4ov;T
/* (non-Javadoc) l$%mZl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r)jj]$0
*/ _rQM[{Bkg
public void sort(int[] data) { u!([m;
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int[] stack=new int[MAX_STACK_SIZE]; su~_l[6
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int top=-1; ^O
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int pivot; W/O&(t
int pivotIndex,l,r; UR~9*`Z ,
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stack[++top]=0; d#@N2
stack[++top]=data.length-1; LT sG
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while(top>0){ kLKd
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int j=stack[top--]; ni#!Gxw
int i=stack[top--]; z}'*zB>
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pivotIndex=(i+j)/2; 4Fr0/="H
pivot=data[pivotIndex]; &e\A v.n@-
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SortUtil.swap(data,pivotIndex,j); |V2+4b,
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file://partition ~Co7 %e V
l=i-1; ;;E "+.
r=j; ;Ry
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do{ z.f~wAT@<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2}P<}-?6
SortUtil.swap(data,l,r); 'l$<DcBj
} Ak!l}d
while(l SortUtil.swap(data,l,r); A&i
SortUtil.swap(data,l,j); Z9rs,_A
vb{+yEa
if((l-i)>THRESHOLD){ _
i )Z8#
stack[++top]=i; ,Yg<Z1
stack[++top]=l-1; U@$Kp>X
} u 89u#gCAC
if((j-l)>THRESHOLD){ Xp]tL3-p
stack[++top]=l+1; *N"bn'>3
stack[++top]=j; 3IqYp K(s
} %2=nS<kC
lgC|3]
} J7R+|GTcx
file://new InsertSort().sort(data); :F:<{]oG_
insertSort(data); ms'!E)
} 9?)r0`:#
/** <$s G]l!\
* @param data fL7ym,?
*/ ZFy>Z:&S,
private void insertSort(int[] data) { iY~9`Q1E
int temp; |9)Q =(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 'vO+,-
} hia_CuY#
} %Uk]e5Hu
} }Y(yDg;"
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} sa8Sy& X"
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归并排序: yi3@-
'z\K0
package org.rut.util.algorithm.support; y: @[QhV
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import org.rut.util.algorithm.SortUtil; 4*9y4"
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/** G0Wzx)3]
* @author treeroot _p vL b
* @since 2006-2-2 _s./^B_w!
* @version 1.0 j;fmmV@
*/ K,YKU?z6
public class MergeSort implements SortUtil.Sort{ p8F5b8]*
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/* (non-Javadoc) 7\aLK#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9viQ<}K<
*/ r=dFk?8XbC
public void sort(int[] data) { S86%o,Saq\
int[] temp=new int[data.length]; '\dau>
mergeSort(data,temp,0,data.length-1); V)\|I8"
} \HFh?3-g
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private void mergeSort(int[] data,int[] temp,int l,int r){ =)C}u6
int mid=(l+r)/2; (
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if(l==r) return ; o>{+vwK
mergeSort(data,temp,l,mid); XA{tVh
mergeSort(data,temp,mid+1,r); hQrO8T?2
for(int i=l;i<=r;i++){ K"1xtpy
temp=data; 5EDM?G
} :0pxacD"!
int i1=l; Y3jb'S4(
int i2=mid+1; DUiqt09`~
for(int cur=l;cur<=r;cur++){ Q nikgV
if(i1==mid+1) "V:B-q
data[cur]=temp[i2++]; "(ehf|%>%
else if(i2>r) }' `2C$
data[cur]=temp[i1++]; A(#hyb#
else if(temp[i1] data[cur]=temp[i1++]; b9HE #*d,
else =rS z>l
data[cur]=temp[i2++]; -nG3(n&wB
} O&]Y.Z9,A
} +ib72j%A
R,01.N( U
} %(b`i C9
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改进后的归并排序: Nzz" w_#
uj_uj!
package org.rut.util.algorithm.support; r?d601(fa
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import org.rut.util.algorithm.SortUtil; NMY~f (x
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/** 39?iX'*p
* @author treeroot T$13"?sr=
* @since 2006-2-2 '.oEyZA;o
* @version 1.0 "2(4?P
*/ Y+ P\5G
public class ImprovedMergeSort implements SortUtil.Sort { r: n^U#
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private static final int THRESHOLD = 10; ]t]s/;9]K
N. 3
x[%:
/* z (r Q6
* (non-Javadoc) YD$fN"}-
* ;7&RmIXKh'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~^=QBwDW8N
*/ lKEdpF<
public void sort(int[] data) { XbYW,a@w2
int[] temp=new int[data.length]; ro7\}O:I
mergeSort(data,temp,0,data.length-1); yL&F!+(/Ix
} ? e%Pvy<i
X:+;d8rCy
private void mergeSort(int[] data, int[] temp, int l, int r) { E
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int i, j, k; 1p>5ZkHb
int mid = (l + r) / 2; Z<z(;)?c
if (l == r) UceZWtYa
return; XX~~SvSM
if ((mid - l) >= THRESHOLD) Lm"l*j4
mergeSort(data, temp, l, mid); |eWlB\ x8
else e.n&Os<|<
insertSort(data, l, mid - l + 1); N54U
[sy
if ((r - mid) > THRESHOLD) %0@Jm)K^
mergeSort(data, temp, mid + 1, r); Lm"a3Nb
else fZH:&EP
insertSort(data, mid + 1, r - mid); )(b]-
)
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for (i = l; i <= mid; i++) { >F6'^9|
temp = data; pUZe.S>G
} '>_'gR0O
for (j = 1; j <= r - mid; j++) { nRN&u4
temp[r - j + 1] = data[j + mid]; {,|*99V
} Z ) qc-~S
int a = temp[l]; h djv/
int b = temp[r]; bTE%p0
for (i = l, j = r, k = l; k <= r; k++) { "'-f?kZ
if (a < b) { >}GtmnF
data[k] = temp[i++]; vL{sk|2&
a = temp; X*1vIs;[@
} else { G%-[vk#]
data[k] = temp[j--]; Af1mTbf=
b = temp[j]; i[@*b/A
} {e0cc1Up}
} v/\l
} $fV47;U'*
]$!-%pNv
/** {LVii}<
* @param data { :'#Ts<
* @param l `$SX%AZA
* @param i )FGm5-K@
*/ Y~hBVz2g
private void insertSort(int[] data, int start, int len) { gI6./;;x
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Vq2d+
,fb
} E(*RtOC<W
} l_FttN
} }Zc.rk
} |"?0H#
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堆排序: ,*%%BTnR
~~,\BhG?
package org.rut.util.algorithm.support; ir-srVoXy
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import org.rut.util.algorithm.SortUtil; ie{9zO<d
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/** ZGf R:a)wc
* @author treeroot 3|8\,fO?
* @since 2006-2-2 Z\D!'FX
* @version 1.0 LJ`*&J
*/ R2yiExw<
public class HeapSort implements SortUtil.Sort{ c#|!^gjf
XzgJ@
/* (non-Javadoc) <Qu]m.z[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q+5g+9
*/ ^.aFns{wv
public void sort(int[] data) { ;*5$xs&=_Z
MaxHeap h=new MaxHeap(); w,> ceu/
h.init(data); xDG8C39qrs
for(int i=0;i h.remove(); gUwg\>UC
System.arraycopy(h.queue,1,data,0,data.length); b/HhGA0
} D/^yAfI
ZH;VEX
private static class MaxHeap{ Lqq
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;D&FZ|`(u
void init(int[] data){ [Nbs{f^J=
this.queue=new int[data.length+1]; vx62u29m
for(int i=0;i queue[++size]=data; |RS9N_eRt
fixUp(size); c+,F)i^`
} ozwPtF5
} "MQy>mD6
b(+M/O>I
private int size=0; "bZ%1)+
4qXO8T#~J=
private int[] queue; $!%/Kk4M
9`]Gosz
public int get() { ~VYZu=p
return queue[1]; cw|3W]
} {z>fe
}
S#_g/3w
public void remove() { ;NQ9A &$)
SortUtil.swap(queue,1,size--); 9z6-HZG'~<
fixDown(1); u:JD
} T1 >xw4uo
file://fixdown ?XN=Er^
private void fixDown(int k) { 8'[g?
int j; }5
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while ((j = k << 1) <= size) { n4\UoKq
if (j < size %26amp;%26amp; queue[j] j++; L"{qF<@V7&
if (queue[k]>queue[j]) file://不用交换 4v9jGwnz t
break; kk#%x#L[
SortUtil.swap(queue,j,k); R?Zv
k = j; EK`}?>'
} nb
dm@
} w#mna b@
private void fixUp(int k) { 7.mY@
while (k > 1) { "`HkAW4GZa
int j = k >> 1; 4Bg"b/kF
if (queue[j]>queue[k]) [Z9
lxZ|
break; Tq{+9+
SortUtil.swap(queue,j,k); dZ}gf}.v
k = j; `Cq&;-u
} 9'+Eu)l:
} "g27|e?y
zGgPW
} p_%dH
-E{D'X
} 1oU/gm$7\q
0%J0.USkM7
SortUtil: 9/2VU<
K
AB(WK9o
package org.rut.util.algorithm; =2v/f_
z7TMg^9#
import org.rut.util.algorithm.support.BubbleSort; Io_bS+
import org.rut.util.algorithm.support.HeapSort; 8'XAZSd(
import org.rut.util.algorithm.support.ImprovedMergeSort; #C^)W/dP
import org.rut.util.algorithm.support.ImprovedQuickSort; @A32|p}
import org.rut.util.algorithm.support.InsertSort; fk%W07x!
import org.rut.util.algorithm.support.MergeSort; 1OI/!!t1$
import org.rut.util.algorithm.support.QuickSort; .5$"qb
?
import org.rut.util.algorithm.support.SelectionSort; ls[0X82F
import org.rut.util.algorithm.support.ShellSort; 3
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(Yi1U~{:
/** DR]=\HQ
* @author treeroot >D]g:t@v
* @since 2006-2-2 ]90BIJ]*c
* @version 1.0 4^uQB(}Z
*/ +}3l$L'bY
public class SortUtil { u7||]|2
public final static int INSERT = 1; PY81MTv0;
public final static int BUBBLE = 2; (|O9L s7N
public final static int SELECTION = 3; %M)LC>c
public final static int SHELL = 4; rnAQwm-8O%
public final static int QUICK = 5; JR6r3W
public final static int IMPROVED_QUICK = 6; j-]`;&L
public final static int MERGE = 7; 7pPaHX8
public final static int IMPROVED_MERGE = 8; h;TN$ /
public final static int HEAP = 9; -sjyv/%_
)LC"rSNx%
public static void sort(int[] data) { /3Y\s&y
sort(data, IMPROVED_QUICK); |k.%e4
} }ejZk
bP
private static String[] name={ tKS'#y!R
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $'*q]]
}; B^;"<2b*
+ /+> :
private static Sort[] impl=new Sort[]{ P;8nC:z L
new InsertSort(), a
gkw)#
new BubbleSort(), KBC?SxJSJc
new SelectionSort(), trx y3k;
new ShellSort(), ?Vre"6U
new QuickSort(), [D%(Y
~2
new ImprovedQuickSort(), ^(F@ #zN}
new MergeSort(), 76oJCNY
new ImprovedMergeSort(), s5s'[<
new HeapSort() lcVZ 32MQ
}; uH{oJSrK
%eOO8^N
public static String toString(int algorithm){ gOy;6\/
return name[algorithm-1]; l+nT$IPF
} HPryq )z
<%4M\n
public static void sort(int[] data, int algorithm) { mNA=<O;i)'
impl[algorithm-1].sort(data); ;yu#Bs
} %T6
sm
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public static interface Sort { OLS/3c
z
public void sort(int[] data); X
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} Z".Xroq~
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public static void swap(int[] data, int i, int j) { 6?(yMSKa
int temp = data; fI
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data = data[j]; !!k^M"e2
data[j] = temp; p>N8g#G
} [$X^r<|P@
} emSky-{$u