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。 i[?VF\Y(
插入排序: =9Vo [
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package org.rut.util.algorithm.support; n0LNAhM
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import org.rut.util.algorithm.SortUtil; ? 'qyI^m@
/** v, CWE
* @author treeroot xk
* @since 2006-2-2 3RX9LJGX
* @version 1.0 0h~{K
*/ !{4'=+
public class InsertSort implements SortUtil.Sort{
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/* (non-Javadoc) ym p
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .l hS
*/ ,1g_{dMx
public void sort(int[] data) { ?@z/#3b
int temp; aX~Jk >a0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Lu~E5 ,
} 6g\hQ\+Z}
} $|g
;
} HOx+umjxW
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} jJaMkF;f
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冒泡排序: P:_bF>r ?
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package org.rut.util.algorithm.support; F @<h:VVP
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import org.rut.util.algorithm.SortUtil; obGhO
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/** S[gACEZ =
* @author treeroot RH:vd|q+
* @since 2006-2-2 l[]cUE
* @version 1.0 h-//v~V)
*/ uts>4r>+
public class BubbleSort implements SortUtil.Sort{ H0!$aO
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/* (non-Javadoc) c:52pYf+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c3Gy1#f:#2
*/ pH2/."zE<
public void sort(int[] data) { }a/z.&x]V
int temp; 'Hzc"<2Y\
for(int i=0;i for(int j=data.length-1;j>i;j--){ $hHV Ie]+
if(data[j] SortUtil.swap(data,j,j-1);
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} L+VQtp&"
} ?E_;[(Mcr
} nbB*d@"
} "G-h8IN^O
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} Ozhn`9L+1!
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选择排序: ]=%6n@z'
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package org.rut.util.algorithm.support; $Mj\ 3
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import org.rut.util.algorithm.SortUtil; {NQCe0S+p
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/** @e& 0Wk
* @author treeroot j>e RV ol
* @since 2006-2-2 dC8}Ttc}
* @version 1.0 *`|xa@1v`
*/ 3u/AqL
public class SelectionSort implements SortUtil.Sort { !yVY[
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/* z;dRzwL
* (non-Javadoc) tHo|8c~[
* rQ_]%ies8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t,dm3+R
*/ Ssuz%*
public void sort(int[] data) { /M::x+/T
int temp; vG.KSA
for (int i = 0; i < data.length; i++) { ^-Ygh[x
int lowIndex = i; _yUYEq<`
for (int j = data.length - 1; j > i; j--) { S 6_:\Q
if (data[j] < data[lowIndex]) { a$h^<D
^
lowIndex = j; ]j>`BK>FE
} QxA( *1
} 83I 5n&)
SortUtil.swap(data,i,lowIndex); %k32:qe
} AD^I1]2f
} yNEU/>]>2
5y 5Dn!`
} $|@vmv0
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Shell排序: b1cVAfUP
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package org.rut.util.algorithm.support; |0oaEd^*}
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import org.rut.util.algorithm.SortUtil; r#2Fk&Z9
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/** |dbKK\ X9
* @author treeroot tK .1
*
* @since 2006-2-2 8Z_ 4%vUBg
* @version 1.0 /gl8w-6
*/ 0^dYu/i5
public class ShellSort implements SortUtil.Sort{ |6b~c{bt
}% q-9
/* (non-Javadoc) zRD-[Z/-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >$9}"
*/ b}ya9tCl;
public void sort(int[] data) { >p@b$po
for(int i=data.length/2;i>2;i/=2){ wBwTJCX
for(int j=0;j insertSort(data,j,i); KK #E
qJ
} 9(q(;|;Hp
} #T2J +
insertSort(data,0,1); 1%*\*z
} @y~kQ5k
8
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/** '7PaJj=Nx
* @param data G" E_4YkJ
* @param j >;hAw!|#
* @param i !&hqj$>-}
*/
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private void insertSort(int[] data, int start, int inc) { ~Ck OiWC0
int temp; :>;F4gGVG
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); r~h#
} LtX53c
} R'zi#FeP
} .?Y"o3
*9$SFe|&n:
} .,p=e$x]
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快速排序: `R:W5_n
zD<W`_z
package org.rut.util.algorithm.support; <{bxOr+
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import org.rut.util.algorithm.SortUtil; D?"P\b[/
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/** isd-b]@:Lc
* @author treeroot TUC)S&bC
* @since 2006-2-2 aK
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* @version 1.0 M @-:iP
*/ u "jV#,,
public class QuickSort implements SortUtil.Sort{ RU4X#gP4Vh
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/* (non-Javadoc) (^y"'B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M1xsGa9h&
*/ tx>7?e8E
public void sort(int[] data) { .4[3r[
quickSort(data,0,data.length-1); 9l&q}
} gee~>l
private void quickSort(int[] data,int i,int j){ m<-!~ ew
int pivotIndex=(i+j)/2; 4jC)"tch
file://swap t~j6w sx;
SortUtil.swap(data,pivotIndex,j); \q1tT!]
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int k=partition(data,i-1,j,data[j]); "4H@&:-(p
SortUtil.swap(data,k,j); ll4CF}k
if((k-i)>1) quickSort(data,i,k-1); S\N1qux{
if((j-k)>1) quickSort(data,k+1,j); 8I/3T
o4WQA"VxM
} reh{jMC
/** czD"mI!
* @param data <JWU@A-.y
* @param i aF^NYe
* @param j b;UDgq8v
* @return oH%[8!#
*/ [QgP6f]=
private int partition(int[] data, int l, int r,int pivot) { 6d6cZGS[:
do{ ^wd@mWxx
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Fb]+h)on
SortUtil.swap(data,l,r); 3;BIwb_
} "4\
while(l SortUtil.swap(data,l,r); }-Mg&~e`
return l; A5yVxSF
} U _5`
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} MmjZq
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改进后的快速排序: #Z2'Y[@.
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package org.rut.util.algorithm.support; )&j`5sSXcr
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import org.rut.util.algorithm.SortUtil; lEFd^@t
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/** 0<\|D^m=&h
* @author treeroot R#4l"
* @since 2006-2-2 b+|Jw\k
* @version 1.0 @}d;-m~
*/ ~#3{5*
M
public class ImprovedQuickSort implements SortUtil.Sort { M.mn9kw`
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private static int MAX_STACK_SIZE=4096; ewk7:zS/?
private static int THRESHOLD=10; vw2E$ya
/* (non-Javadoc) >[;@
[4}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5;0w({1l
*/ -/JEKwc
public void sort(int[] data) { (^}t
int[] stack=new int[MAX_STACK_SIZE]; K/
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int top=-1; '37
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int pivot; /#Aw7F$Ey
int pivotIndex,l,r; ~TRC-H
/\/^= j
stack[++top]=0; QLO;D)fC
stack[++top]=data.length-1; NLMvi!5w,
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while(top>0){ Z2$_9.
int j=stack[top--]; 5 qfvHQ ~M
int i=stack[top--]; imYfRi=$
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pivotIndex=(i+j)/2; U~:H>
pivot=data[pivotIndex]; hI86WP9*
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SortUtil.swap(data,pivotIndex,j); lrv-[}}
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file://partition dP8qP_77A~
l=i-1; %[p*6&V
r=j; `}),wBq
do{ }) -V,\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1YV1Xnn,
SortUtil.swap(data,l,r); 6m;>R%S_
} kS-BB[T
while(l SortUtil.swap(data,l,r); I_ZJnu<
SortUtil.swap(data,l,j); w"9h_;'C_
:b44LXKCP
if((l-i)>THRESHOLD){ ]%6%rq%9C
stack[++top]=i; x *I'Ar
stack[++top]=l-1; 0(y*EJA$
} V|'@D#\
if((j-l)>THRESHOLD){ \|Af26
stack[++top]=l+1; Z{^!z
stack[++top]=j; s9wzN6re
} n>v1<^
*LB-V%{|'
} /+92DV
file://new InsertSort().sort(data); e#;43=/Ia
insertSort(data); "rn
} G!I++M"
/** {A0F/#M]
* @param data 6)^*DJy
*/ fxcE1=a
private void insertSort(int[] data) { FvT4?7-
int temp; NRx 7S9W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W8 g13oAu"
} }'P|A
} SSF:PTeG>
} i`sZP#h
MM32\}Y6
} :5~Dca_iU4
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归并排序: <9pI~\@w
IE \RP!
package org.rut.util.algorithm.support; g4WmUV#wp
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import org.rut.util.algorithm.SortUtil; ;&j'`tP
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/** wnX;eU/n
* @author treeroot O<s7VHj
* @since 2006-2-2 .\a+m
* @version 1.0 |^ 8ND#x
*/ 55O}S Us!P
public class MergeSort implements SortUtil.Sort{ VjWJx^ZL#
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/* (non-Javadoc) q<E7qY+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c/K#W$ l
*/ HHx:s2G
public void sort(int[] data) { 6h/!,j0:t_
int[] temp=new int[data.length]; ^ZsIQ4 @`
mergeSort(data,temp,0,data.length-1); tQzbYzGb7
} @M\JzV4 A[
!6|_`l>G,
private void mergeSort(int[] data,int[] temp,int l,int r){ j4i$2ZT'
int mid=(l+r)/2; K;"H$0!9
if(l==r) return ; WDY\Fj
mergeSort(data,temp,l,mid); k H65k (
mergeSort(data,temp,mid+1,r); )2).kL>
for(int i=l;i<=r;i++){ <o()14
temp=data; X{#^O/
} Mt4]\pMUb
int i1=l; HCOsVTl,
int i2=mid+1; =~O3j:<6
for(int cur=l;cur<=r;cur++){ .'M.yE~5J
if(i1==mid+1) 2Di~}* 9&
data[cur]=temp[i2++]; bsu?Q'q
else if(i2>r) ]B(}^N>WH
data[cur]=temp[i1++]; l#cVQ_^"
else if(temp[i1] data[cur]=temp[i1++]; s>G6/TTH6
else 65 zwi-
data[cur]=temp[i2++]; ^iEf"r
} dwB#k$VIOw
} "#wAGlH6>
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} )q'dX+4=eL
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改进后的归并排序: ^kNVQJiZyG
=Jl\^u%H(x
package org.rut.util.algorithm.support; [UkcG9
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import org.rut.util.algorithm.SortUtil; jF6Q:`k
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t.}-
/** 1R-0b{w[
* @author treeroot 1W*Qc_5 v1
* @since 2006-2-2 ?:vg`m!*
* @version 1.0 wOL%otEf
*/ 53uptQ{
public class ImprovedMergeSort implements SortUtil.Sort { 3SWDPy
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private static final int THRESHOLD = 10; {0j,U\ kb
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/* u*l>)_HD
* (non-Javadoc) rIPg,4y*S!
* %pg)*>P h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z=-#{{bv
*/ AIl`>ac
public void sort(int[] data) { # d"M(nt
int[] temp=new int[data.length]; 0 F8xS8vK+
mergeSort(data,temp,0,data.length-1); o7we'1(O
} im<!JMI
n\Is}Czl
private void mergeSort(int[] data, int[] temp, int l, int r) { LGy62 y$
int i, j, k; fPN/Mxu
int mid = (l + r) / 2; r|Uz?
if (l == r) XKp(31])
return; 7202N?a
{
if ((mid - l) >= THRESHOLD) r8R7@S2V'
mergeSort(data, temp, l, mid); n)cc\JPQ
else 71Q`B#t0'Z
insertSort(data, l, mid - l + 1); b^[>\s'
if ((r - mid) > THRESHOLD) :F5(]g 7
mergeSort(data, temp, mid + 1, r); 6R m d t
else fC^d@4ha
insertSort(data, mid + 1, r - mid); ajRht +{
Q>yj<DR
for (i = l; i <= mid; i++) { "j`T'%EV
temp = data; iU0jv7}n
} dh}"uM}a
for (j = 1; j <= r - mid; j++) {
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temp[r - j + 1] = data[j + mid]; ~mH'8K|l
} 7 HL
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int a = temp[l]; sk5=$My
int b = temp[r]; OvdBUcp[
for (i = l, j = r, k = l; k <= r; k++) { +:#g6(P]
if (a < b) { s!09cS
data[k] = temp[i++]; ,EH-Sf2Cb
a = temp; Mf"(P.GIS
} else { =S^ vIo)
data[k] = temp[j--]; MAqETjB
b = temp[j]; 1jSmTI d
} jz'%(6#'gW
} eG1A7n'6W
} YedF%
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/** /;TD n>lq
* @param data /jaO\t'q
* @param l ?~^p:T
* @param i "
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*/ r+]a
private void insertSort(int[] data, int start, int len) { BR6HD7G
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z,qNuv"W
} :'H}b*VWx
} -K^(L#G
} muK)Yw[#N
} ;(g"=9e
oPAc6ObOV~
堆排序: -uAGG?ZER
M+=q"#&
package org.rut.util.algorithm.support; dg N#"
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import org.rut.util.algorithm.SortUtil; _Axw$oYS
qqYQ/4Ajw
/** 5=poe@1g
* @author treeroot tr
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* @since 2006-2-2 N:^4OnVR
* @version 1.0 00W_XhJ
*/ }D~m%%,
public class HeapSort implements SortUtil.Sort{ &@&^k$du8q
='/#G0W
/* (non-Javadoc) }q/[\3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5',b~Pp
*/ jN+2+P%OL
public void sort(int[] data) { up3mum
MaxHeap h=new MaxHeap(); D1fUEHB}A8
h.init(data); )A;jBfr
for(int i=0;i h.remove(); fK4O
N'[R:
System.arraycopy(h.queue,1,data,0,data.length); Xp|$z ~
} DqH]F S?]
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private static class MaxHeap{ wzI*QXV2s
d D^?%,a
void init(int[] data){ 1kc{`oL
this.queue=new int[data.length+1]; n
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for(int i=0;i queue[++size]=data; {6*UtG
fixUp(size); n*=Tm
KQ
} H#`&!p
} ~bjT,i
y3 S T"U
private int size=0; U%2{PbL
xl,?Hh%#
private int[] queue; SkXx:@
i;+<5_
public int get() { i\L7z)u
return queue[1]; ^\PNjj*C i
} `? f sU
TsRbIq[
public void remove() { w4&-9[@Y
SortUtil.swap(queue,1,size--); ,S3uY6,
fixDown(1); f2$<4Hhmm
} `\-mqe
file://fixdown 28,HZaXhc
private void fixDown(int k) { 5sMyH[5zY
int j; ukXKUYNm8
while ((j = k << 1) <= size) { B{_-k
if (j < size %26amp;%26amp; queue[j] j++; Bv=:F5hLG
if (queue[k]>queue[j]) file://不用交换 *5'l"YQ@1
break; i ;YRE&X
SortUtil.swap(queue,j,k); t9kqX(!
k = j; <C7/b#4>\
} m3b?f B
} 1b"3]?
private void fixUp(int k) { 3rv~r0
while (k > 1) { 3n TpL#
int j = k >> 1; =hKu85
if (queue[j]>queue[k]) g>Kh? (
break; 5NYYrA8,^
SortUtil.swap(queue,j,k); cA
B^]j
k = j; ZP7wS
} `l}r&z(8
} K}Pi"Le@W
0bMbM^xV6
} T+<OlXpL
kv3V|
} &uv7`VT
>:U{o!N`#_
SortUtil: 6?jSe<4x
W#[3a4%m
package org.rut.util.algorithm; Fm.IRu<\`
Z|Xv_Xo|4
import org.rut.util.algorithm.support.BubbleSort; xXc3#n
import org.rut.util.algorithm.support.HeapSort; ,HO@bCK
import org.rut.util.algorithm.support.ImprovedMergeSort; vn=0=(
import org.rut.util.algorithm.support.ImprovedQuickSort; @$d_JwI
import org.rut.util.algorithm.support.InsertSort; c:z<8#A}
import org.rut.util.algorithm.support.MergeSort; q0]Z` <w
import org.rut.util.algorithm.support.QuickSort; *6*/kV?F
import org.rut.util.algorithm.support.SelectionSort; `wLa.Gzj
import org.rut.util.algorithm.support.ShellSort; J|I&{
e;)&Hc:Z
/** ,n+~S^r
* @author treeroot ,1-#Z"~c
* @since 2006-2-2 SSI('6Z/
* @version 1.0 #kDJ>r |&-
*/ ~Aq$GH4
public class SortUtil { <)9E .h
public final static int INSERT = 1; <q#/z&F!
public final static int BUBBLE = 2; ?f[U8S}
public final static int SELECTION = 3; nHi6$}
I
public final static int SHELL = 4; Ej64^*
public final static int QUICK = 5; *+'l|VaVq\
public final static int IMPROVED_QUICK = 6; .1& F p
public final static int MERGE = 7; 0(dXU\Y
public final static int IMPROVED_MERGE = 8; ns1@=f cO
public final static int HEAP = 9; n*fsdo~
5;-?qcb^w
public static void sort(int[] data) { N,NEg4 q[
sort(data, IMPROVED_QUICK); 8a4&}^|
} rY&Y58./
private static String[] name={ %
2lcc"'
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ('.r_F
};
rN^P//
7Cj6Kw5k
private static Sort[] impl=new Sort[]{ Tn8GLn
new InsertSort(), q!zsGf{
new BubbleSort(), 9gokTFoN
new SelectionSort(), -{XXU )Z
new ShellSort(), LK[%}2me
new QuickSort(), X>y6-%@
new ImprovedQuickSort(), b}#ay2AR
new MergeSort(), u0& dDZ
new ImprovedMergeSort(), oVSq#I4
new HeapSort() WH^rM`9
}; R+O[,UM^I~
GiN\@F!
public static String toString(int algorithm){ FsYsQ_,R3
return name[algorithm-1]; 2r=A'
} v'zf*]9
55T c
public static void sort(int[] data, int algorithm) { c,I|O'
&k
impl[algorithm-1].sort(data); h
.$3jNU
} C6C7*ks
Z,osdF
public static interface Sort { |YAnd=$
public void sort(int[] data); SQB[d3f
} )FrXD3p
P7GF"/
public static void swap(int[] data, int i, int j) { /P/S0
int temp = data; Ug^v
]B9
data = data[j]; "xV9$m>
data[j] = temp; &