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。 2H fP$.
插入排序: Y>Q9?>}Q
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package org.rut.util.algorithm.support; 1eI>Yy>}
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import org.rut.util.algorithm.SortUtil; h;f5@#F
/** iyrUY
* @author treeroot orf21N+ [
* @since 2006-2-2 `ysPEwA|
* @version 1.0 y!GjC]/
*/ YnuC<y
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public class InsertSort implements SortUtil.Sort{ Q?n} ~(%&
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/* (non-Javadoc) bG67TWY)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z^I"{eT8
*/ Qpiv,n
public void sort(int[] data) { gt6*x=RCrQ
int temp; |ap{+ xh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uF9p:FvN8
} 8e)k5[\m
} [ivz/r(Rj
} d z&| 3o
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} n@{fqj
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冒泡排序: F%bv
vw*(
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package org.rut.util.algorithm.support; |f'U_nE#R/
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import org.rut.util.algorithm.SortUtil; d
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/** IV_uf
* @author treeroot -N^}1^gA
* @since 2006-2-2 c>{X(Z=2
* @version 1.0 ]ms#*IZ
*/ )<9g+^
public class BubbleSort implements SortUtil.Sort{ e{U`^ao`F8
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/* (non-Javadoc) QkZT%!7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *_b4j.)ax,
*/ b*qkox;j
public void sort(int[] data) { % ~J90a
int temp; PHi'&)|
for(int i=0;i for(int j=data.length-1;j>i;j--){ UtG@0(6C
if(data[j] SortUtil.swap(data,j,j-1); Bo.x
} xT{qeHeZ9,
} )QaI{ z
} -'3vQXj&
} #B"ki{Se*
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} ?tE}89c
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选择排序: rw8O<No4.o
{o+aEMhM
package org.rut.util.algorithm.support; 7<x0LW
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import org.rut.util.algorithm.SortUtil; |OF<=GGO+
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/** t= "EbPE
* @author treeroot ^v*ajy.>
* @since 2006-2-2 6Bmv1n[X^h
* @version 1.0 f[.RAHjk
*/ pZ+zm6\$
public class SelectionSort implements SortUtil.Sort { yfiRMN"2
RPPxiYU^
/* )NRY9\H
* (non-Javadoc) *:\-:*
* 1%^U=[#2`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o DPs xw
*/ X&MO}
public void sort(int[] data) { ,f0cy\.?
int temp; \K`AO{ D@
for (int i = 0; i < data.length; i++) { xO9,,w47
int lowIndex = i; $%`OJf*k
for (int j = data.length - 1; j > i; j--) { )9##mUt'}
if (data[j] < data[lowIndex]) { JxiLjvIq
lowIndex = j; .hn{m9|U
} pnca+d
} n7
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SortUtil.swap(data,i,lowIndex); muT+H(Z p}
} jr~ +}|@{
} -
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} *y5d&4G2
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Shell排序: *W y0hnr;]
D(Zux8l
package org.rut.util.algorithm.support; _ D1bR7
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import org.rut.util.algorithm.SortUtil; PkF
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/** }C"EkT!F
* @author treeroot 60[f- 0X
* @since 2006-2-2 8xDSeXh;
* @version 1.0 jkQv cU
*/ 5b0Ipg
public class ShellSort implements SortUtil.Sort{ Ko\m8\3?fK
7~C@x+1S/
/* (non-Javadoc) W:4]-i?2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +>KWYPH
*/ U&C\5N]
public void sort(int[] data) { ^>h
9<
for(int i=data.length/2;i>2;i/=2){ =R:3J"ly0
for(int j=0;j insertSort(data,j,i); '1~mnmiP
} 0fxA*]h
}
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insertSort(data,0,1); 9Vxsv*OR,
} $.R$I&U
r&A#h;EQX2
/** 3lMmSKN
* @param data g v&xC 6>
* @param j =\J^_g4-l
* @param i .MhZ=sn
*/ qeQTW@6
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private void insertSort(int[] data, int start, int inc) { <'v?WV_
int temp; h\Op|#gIT
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F:n(yXA
} &?9p\oY[
} *ls}r5k2Y
} SgAY/#
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} (+4gq6b
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快速排序: )+RGXVp
cm%QV?
package org.rut.util.algorithm.support; Q
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import org.rut.util.algorithm.SortUtil; _T6WA&;8
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/** igOjlg_Q
* @author treeroot 6NZ3(
* @since 2006-2-2 W|G(x8
* @version 1.0 28d:
*/
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public class QuickSort implements SortUtil.Sort{ /jC0[%~jV
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/* (non-Javadoc) /e|`mu%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1FjA
*/ ]r$S{<
public void sort(int[] data) { Nj %!N
quickSort(data,0,data.length-1); -1Lh="US
} i:&Y{iPQp
private void quickSort(int[] data,int i,int j){ ZUQ1\Iw
int pivotIndex=(i+j)/2; LZ|G" 5X[
file://swap H_ .@{8I
SortUtil.swap(data,pivotIndex,j); }LM^>M%
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int k=partition(data,i-1,j,data[j]); Fq&@dxN3
SortUtil.swap(data,k,j); j{7_p$JM
if((k-i)>1) quickSort(data,i,k-1); W6K]jIQ
if((j-k)>1) quickSort(data,k+1,j); KOV^wSwS
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} /cJ$`
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/** fH`P8?](x
* @param data S!#7]wtbP
* @param i qK:.j
* @param j -tF5$pb'
* @return rD%(*|Y"c
*/ CP7Zin1S/w
private int partition(int[] data, int l, int r,int pivot) { AXH4jQw
do{ ]QtdT8~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5[al^'y
SortUtil.swap(data,l,r); /6gqpzum4
} )KaQ\WJ:
while(l SortUtil.swap(data,l,r); Zu$f-_"
return l; )qn
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} NrgN{6u;
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} ?)",}XL6
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改进后的快速排序: Vd)iv\a
e&8pTD3
package org.rut.util.algorithm.support; }Da8S|)H
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import org.rut.util.algorithm.SortUtil; ah"2^x
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/** :QUZ 7^u
* @author treeroot Dd!MG'%hlb
* @since 2006-2-2 H6/@loO!Xy
* @version 1.0 o8KlY?hX
*/ ]0ouJY
public class ImprovedQuickSort implements SortUtil.Sort { [@rZ.Hsl
$*b>c:
private static int MAX_STACK_SIZE=4096; $Z+N* w~8
private static int THRESHOLD=10; {u9(qd;;
/* (non-Javadoc) fF_1ZKx+#!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kkyn>Wxv
*/ V*5:Vt7N
public void sort(int[] data) { RT)0I;
int[] stack=new int[MAX_STACK_SIZE]; lh7{2WQ
T_[W=9
int top=-1; +;Q&
int pivot; 17$JBQ,[
int pivotIndex,l,r; +_Fsiu_b
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stack[++top]=0; 8$v17 3
stack[++top]=data.length-1; P;MS%32
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while(top>0){ L;,Nh
int j=stack[top--]; q0`Vw%
int i=stack[top--]; q_OIzZ@
/w_Sc{
pivotIndex=(i+j)/2; H^K(1
pivot=data[pivotIndex]; 'RQZU*8
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SortUtil.swap(data,pivotIndex,j); Gd%6lab
6\\B{%3R2
file://partition > :!faWX
l=i-1; 15iCJ p
r=j; vFL3eu#
do{ -gIuL
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Toy~\
SortUtil.swap(data,l,r); :n0(g B
}
/A_</GYs
while(l SortUtil.swap(data,l,r); 7#MBT-ih
SortUtil.swap(data,l,j); ]pB0b JAt
:&6QKTX
if((l-i)>THRESHOLD){ &5(|a"5+G
stack[++top]=i; gLl?e8[F
stack[++top]=l-1; pF K[b
} z+PSx'#}
if((j-l)>THRESHOLD){ Hi,_qlc+
stack[++top]=l+1; D<L]'
stack[++top]=j; C(?>l.QGw
} A{x&5yX8
]8+%57:E
} /:ma}qGy
file://new InsertSort().sort(data); ^ T(l3r
insertSort(data); =ub&@~E
} mgG0uV
/** ^yy\CtG
* @param data O4\GL
*/ |rW}s+Kcr
private void insertSort(int[] data) { *S~. KW [
int temp; )\`TZLR
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^w8H=UkP!+
} R!*UU'se
} bt%k;Z]
} f@\
k_
F mh;d*IT
} H!Uy4L~>
eK/[jxNO
归并排序: JP!$uK{u
AJt0l|F
package org.rut.util.algorithm.support; y"e'Gg2
1'c!9
import org.rut.util.algorithm.SortUtil; {(D$Xb
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/** kul&m|
* @author treeroot ~;UK/OZ
* @since 2006-2-2 lCWk)m8
* @version 1.0 w gATfygr
*/ ^CZn<$
public class MergeSort implements SortUtil.Sort{ */nb%QV
iP|h] ;a+@
/* (non-Javadoc) Va(R*38k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B*Hp
*/ nt "VH5
public void sort(int[] data) { %
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int[] temp=new int[data.length]; N(t1?R/e,
mergeSort(data,temp,0,data.length-1); 0x[vB5R
} ;o%r{:lng
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private void mergeSort(int[] data,int[] temp,int l,int r){ l=
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int mid=(l+r)/2; >W.Pg`'D
if(l==r) return ; "E/F{6NH
mergeSort(data,temp,l,mid); wF?THkdFo
mergeSort(data,temp,mid+1,r); TL]2{rf~
for(int i=l;i<=r;i++){ 72~)bu
temp=data; f]T#q@|lE
} IH}?CZ@{?
int i1=l;
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int i2=mid+1; b=K
for(int cur=l;cur<=r;cur++){ -$dnUXFsj[
if(i1==mid+1) NkNw9?:#4
data[cur]=temp[i2++]; ofcoNLX5c
else if(i2>r) 9Hlu%R
data[cur]=temp[i1++]; hd/5*C{s
else if(temp[i1] data[cur]=temp[i1++]; 9p2"5x
else ,8+SQo#3
data[cur]=temp[i2++]; p8Lb*7W
} PovPO
} _)2NFq
wC@4`h\U
} -a&wOn-W
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改进后的归并排序: 2NIK0%6
;oob
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package org.rut.util.algorithm.support; saU|.\l
H'?Bx>X
import org.rut.util.algorithm.SortUtil; f+fF5Z\
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/** f[ %\LHq
* @author treeroot P0'
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* @since 2006-2-2 KkJcHU
* @version 1.0 v SHb\V#
*/ &Vnet7LfU
public class ImprovedMergeSort implements SortUtil.Sort { @iC!Q>D
=!{}:An1$
private static final int THRESHOLD = 10; UupQ*,dJ
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/*
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* (non-Javadoc) 8
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* |
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8{%/!ylJz
*/ N7+K$)3
public void sort(int[] data) { akJ{-
int[] temp=new int[data.length]; mQVduG
mergeSort(data,temp,0,data.length-1); 1m}'Y@I
} F4kU) i
&rcr])jg[
private void mergeSort(int[] data, int[] temp, int l, int r) { d/P$q MD
int i, j, k; UO<uG#FB
int mid = (l + r) / 2; 0<!kGL5
if (l == r) s:I^AL5
return; -uy}]s5Qu
if ((mid - l) >= THRESHOLD) =*8"ci$
mergeSort(data, temp, l, mid); !Q cgTW)T
else lSXhHy
insertSort(data, l, mid - l + 1); }! zjj\g^
if ((r - mid) > THRESHOLD) W!XFaA$
mergeSort(data, temp, mid + 1, r); d@,q6R}!MP
else z7HC6{g%X
insertSort(data, mid + 1, r - mid); 0e:K iUr
J
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for (i = l; i <= mid; i++) { $dorE~T
temp = data; rAP+nh ans
} N|1J@"H
for (j = 1; j <= r - mid; j++) {
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temp[r - j + 1] = data[j + mid]; 1;.}u=8
} 0IQu6
X
int a = temp[l]; 5jx{O${u
int b = temp[r]; OK3B6T5w=
for (i = l, j = r, k = l; k <= r; k++) { wT*`Od8w
if (a < b) { K# _plpr
data[k] = temp[i++]; z_A%>E4
a = temp; WYEvW<Hv
} else { 3i35F.=X,
data[k] = temp[j--]; ^]E| >~\
b = temp[j]; /*rMveT
} FCqs'
} Pbm;@V
} Wd~}O<"
9FPl
/** Cv;z^8PZJz
* @param data `n5RDz/f0
* @param l z0g$+bhy
* @param i }@1LFZx
*/ ^Ud`2 OW;2
private void insertSort(int[] data, int start, int len) { tet
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "TN}=^A\F
} 2R<1^
} 6D0uLh
} ',juZ[]_{
} g&_0)(a\
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堆排序: ~5p
`Kg*
[}P|OCW
package org.rut.util.algorithm.support; EMs$~CL4
kIXLB!L2b^
import org.rut.util.algorithm.SortUtil; ;qG a|`#j
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/** 3'1O}xO
* @author treeroot MKoN^(7
* @since 2006-2-2 ]6=cSs!
* @version 1.0 %[NefA(
*/ pjjs'A*y
public class HeapSort implements SortUtil.Sort{ e5veq!*C?
prIq9U|@
/* (non-Javadoc) /91H!s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &^&k]JBaV
*/ <@;e N&
public void sort(int[] data) { \?g)jY
MaxHeap h=new MaxHeap(); H26j]kY
h.init(data); x%cKTpDh!
for(int i=0;i h.remove(); %pTbJaM\U
System.arraycopy(h.queue,1,data,0,data.length); 4I {|M,+
} Eq'{uV:
gK#aC[
private static class MaxHeap{ dQ;rO$co
3 5|5|ma
void init(int[] data){ *dUnP{6 g
this.queue=new int[data.length+1]; DrMcE31
for(int i=0;i queue[++size]=data; Nm\I_wjX
fixUp(size); }=XL^a|V
} }o)GBWqHR
} (qohb0
#n~/~*:i92
private int size=0; "#[Y[t\Ia
x`C;
private int[] queue; k`\DC\0RG
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public int get() { 7p u*/W~
return queue[1]; tk1qgjE(?
} +twBFhS7k
?+`Zef.g
public void remove() { 3z~zcQ^\
SortUtil.swap(queue,1,size--); hr]NW>;
fixDown(1); 1iF
|t5>e
} WGp81DNS|
file://fixdown 0m*0I>
private void fixDown(int k) { *pI3"_
int j; 2"V?+Hhz
while ((j = k << 1) <= size) { $9Z8P_^.0(
if (j < size %26amp;%26amp; queue[j] j++; eDTEy;^o
if (queue[k]>queue[j]) file://不用交换 eZP"M6
break; EkXns%][L
SortUtil.swap(queue,j,k); AQ+w%>G6
k = j; QdDdrR^&
} 8iX?4qj{P
} N15{7,
private void fixUp(int k) { 1s!hl{n<~
while (k > 1) { H6'xXS
int j = k >> 1; w ="I*7c@
if (queue[j]>queue[k]) n%"s_W'E
break; z
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SortUtil.swap(queue,j,k); rBgLj,/`U/
k = j; ;O{AYF?,N
} .bnoK
} CXA)Zl5#
fyQAQZT
} UN,@K9
!7 *X{D v
} 4fpz;2%
B.&q]CAv-
SortUtil: z,DEBRT+
0>E` 9|
package org.rut.util.algorithm; _CI! 7%
v\\Z[,dK
import org.rut.util.algorithm.support.BubbleSort; 9LCV"xgX
import org.rut.util.algorithm.support.HeapSort; 6aMqU?-
import org.rut.util.algorithm.support.ImprovedMergeSort; U_M > Q_r(
import org.rut.util.algorithm.support.ImprovedQuickSort; $C^94$W
import org.rut.util.algorithm.support.InsertSort; S=M$g#X`5
import org.rut.util.algorithm.support.MergeSort; JNX7]j\
import org.rut.util.algorithm.support.QuickSort; "v^Q
!
import org.rut.util.algorithm.support.SelectionSort; 8 kd
import org.rut.util.algorithm.support.ShellSort; (h`||48d
!;iySRZr
/** \>9%=32u.
* @author treeroot K*CO%:,-
* @since 2006-2-2 % YU(,83(+
* @version 1.0 EJZl'CR
*/ e ~*qi&,4
public class SortUtil { VN`2bp>5I
public final static int INSERT = 1; SjG=H%
public final static int BUBBLE = 2; {\lu; b!
public final static int SELECTION = 3; O`|'2x{[O
public final static int SHELL = 4; &XgB-}^:
public final static int QUICK = 5; ,{:5Z:<|
public final static int IMPROVED_QUICK = 6; Fwho.R-.
public final static int MERGE = 7; -Z6ot{%
public final static int IMPROVED_MERGE = 8; ^*}L9Ot~
public final static int HEAP = 9; M^+~r,D1u
=
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public static void sort(int[] data) { 8 +uOYNXsA
sort(data, IMPROVED_QUICK); *^" 4 )
} fn;7Nf7{
private static String[] name={ *"1]NAz+
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" c%i/ '<Afr
}; 2r[Q$GPM<
LFg<j1Gk`
private static Sort[] impl=new Sort[]{ bl}$x/
new InsertSort(), ~?[@KK
new BubbleSort(), F(@|p]3*
new SelectionSort(), p,ZubRJ"
new ShellSort(), wf8vKl#Kfw
new QuickSort(), - +
$u
new ImprovedQuickSort(), w 7=Y_
new MergeSort(), 37M7bB0
new ImprovedMergeSort(), JJ7-$h'0q
new HeapSort() QD /| zi
}; Y@#~8\_
eMWY[f3
public static String toString(int algorithm){ n;O
3.2
return name[algorithm-1]; DB%=/ \U
} 3(vI{[yhT
4*m\Zoq>
public static void sort(int[] data, int algorithm) { ##R]$-<4dQ
impl[algorithm-1].sort(data); G^ n|9)CVW
} "o[\Aec:
.;*0odxv
public static interface Sort { i,* DWD+
public void sort(int[] data); > -k$:[l
} \ m2[
97$y,a{6
public static void swap(int[] data, int i, int j) { ^B]M- XG
int temp = data; F"a,[i,[W
data = data[j]; 1a#wUd3
data[j] = temp; zPhNV8k-
} zif()i
} Wq"pKI#x