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~?D^
插入排序: .)o<'u@Ri
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package org.rut.util.algorithm.support; |u8IQR'B
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import org.rut.util.algorithm.SortUtil; p9Zi}!
/** j'FSd*5m
* @author treeroot o<bZ. t
* @since 2006-2-2 4Ei*\:
* @version 1.0 Z
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*/ }#5Vt
public class InsertSort implements SortUtil.Sort{ )isz
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/* (non-Javadoc) FIhq>L.q4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kx0(v1y3gT
*/ "s[wLclfG
public void sort(int[] data) { bHRH2Ss
int temp; esU9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -qaJ@T+J+7
} UIgs/
} U8Z(=*Z3
} tIfA]pE
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} _|reo6
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冒泡排序: r:0F("},
UngDXD )
package org.rut.util.algorithm.support; KGb:NQ=O6i
K}7E;O5m"
import org.rut.util.algorithm.SortUtil; zLEl/yPE
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MV
/** @=JOAo
* @author treeroot KBJ%$OQV
* @since 2006-2-2 `&y Qtj#
'
* @version 1.0 2GeJ\1k
*/ 7u7`z%
public class BubbleSort implements SortUtil.Sort{ .kKU MyW(
U4;r.#qw,
/* (non-Javadoc) yu3: Hv}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]e`&py E
*/ `o|Y5wQ@
public void sort(int[] data) { cW%QKdTQY0
int temp; fNR2(8;}
for(int i=0;i for(int j=data.length-1;j>i;j--){ @GTkS!86
if(data[j] SortUtil.swap(data,j,j-1); b7-M'-Km0_
} b)ytm=7ha
} jlaU3qXL
} k*XI/k5Vc
} 9O(vh(C
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} (j<FS>##
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选择排序: ` mvPbZ0<
'k^d-Mh>h
package org.rut.util.algorithm.support; M9[52D!{
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import org.rut.util.algorithm.SortUtil; a
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/** P.y06^
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* @author treeroot T)Y{>wT
* @since 2006-2-2 ^qY?x7mx1
* @version 1.0 V8hmfV~=]P
*/ -Hh.8(!XoO
public class SelectionSort implements SortUtil.Sort { _. &N@k
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/* h'nXV{N0
* (non-Javadoc) Xaw ~Hh)
* zCdcwTe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hHk9O?
*/ tfCK^{
public void sort(int[] data) { 1EMud,,:
int temp; dw>1Ut{"3
for (int i = 0; i < data.length; i++) { sj 3[ny;b
int lowIndex = i; F.{$HJ
for (int j = data.length - 1; j > i; j--) { "x0/i?pqa
if (data[j] < data[lowIndex]) { O)!S[5YI
lowIndex = j; - i#Kpf
} Ys0N+
} $x*(D|\'<
SortUtil.swap(data,i,lowIndex); gtnu/Q
} 0VZC7@
} F!<!)_8Q
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}
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Shell排序: 9>@Vk
vpY
|=:<[FU
package org.rut.util.algorithm.support; -%dBZW\u2
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import org.rut.util.algorithm.SortUtil; t,u;"%go
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/** :O7n*lwx
* @author treeroot j[A:So
* @since 2006-2-2 CK#i 6!~r
* @version 1.0 dJe
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*/ S%jW}v';
public class ShellSort implements SortUtil.Sort{ @*roW{?!
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/* (non-Javadoc) `pjB^--w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [1mEdtqf*
*/ 8#w%qij
public void sort(int[] data) { PQ{5*}$N
for(int i=data.length/2;i>2;i/=2){ -ykD/
for(int j=0;j insertSort(data,j,i); \
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} !4T!@"#
} ?r{hrAx
insertSort(data,0,1); 1ASoH,D/
} dQz#&&s-
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/** 1aZGt2;
* @param data ^#XQ2UN
* @param j kE :{#>[Uz
* @param i G)q;)n;*=
*/ ~6K.5t7
private void insertSort(int[] data, int start, int inc) { p1\mjM
int temp; ^wD`sj<Qg
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); o70] F
} "jLC!h^N
} 8 C9ny}
} {9@u:(<X9
H@u5&
} ?\)h2oi!F5
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快速排序: &F:.OVzX
CYlS8j
package org.rut.util.algorithm.support; mlPvF%Ba
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import org.rut.util.algorithm.SortUtil; 80`$F{xcX
4*D"*kR;
/** E*IP#:R
* @author treeroot B[q"oI`
* @since 2006-2-2
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* @version 1.0 1Vx5tOq
*/ >q0%yh-
public class QuickSort implements SortUtil.Sort{ !.-u'6e
r6R@"1/
/* (non-Javadoc) w0+X;aId
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GwfC l{l
*/ hu1ZckIw?
public void sort(int[] data) { "Zx<hL*
quickSort(data,0,data.length-1); :`Ep#[Wvo
} V#5$J Xp
private void quickSort(int[] data,int i,int j){ >x3lA0m
int pivotIndex=(i+j)/2; J3(E{w8Q
file://swap H
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SortUtil.swap(data,pivotIndex,j); N'-[>w7vK2
]31=8+D
int k=partition(data,i-1,j,data[j]); QQ_7Q^
SortUtil.swap(data,k,j); x(xi%?G
if((k-i)>1) quickSort(data,i,k-1); sei2\l8q
if((j-k)>1) quickSort(data,k+1,j); hF$qH^-c*A
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} Yb4ku7}
/** |
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* @param data 77y+ik
* @param i oP9 y@U
* @param j ."=%]l0
* @return pf107S
*/ AS@(]T#R
private int partition(int[] data, int l, int r,int pivot) { $B_%MfI
do{ UAT\ .
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5OtdB'UITd
SortUtil.swap(data,l,r); ""XAUxo
} zL9~gJ
while(l SortUtil.swap(data,l,r); (3lA0e`Y
return l; pjX= :K|
} ,ofE*Wt
*4Ldh}S!
} gwQMy$
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改进后的快速排序:
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9Dgs
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package org.rut.util.algorithm.support; bT&{8a
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import org.rut.util.algorithm.SortUtil; 8cG`We8l&
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/** .pQ5lK(R
* @author treeroot } `Ya;
* @since 2006-2-2 /\# f@Sg
* @version 1.0 3MFTP5~
*/ _<FUS'"
public class ImprovedQuickSort implements SortUtil.Sort { n#b{
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private static int MAX_STACK_SIZE=4096; !ess.U&m'
private static int THRESHOLD=10; GT6i9*tb#
/* (non-Javadoc) v9-4yZU^WR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Vat\,45pg
*/ )Yy5u'}
public void sort(int[] data) { [B+F}Q^;
int[] stack=new int[MAX_STACK_SIZE]; _!qD/[/
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int top=-1; BJWlx*U]
int pivot; a;Y:UwD9*
int pivotIndex,l,r; !zF07.(E
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stack[++top]=0; <_<zrXc]
stack[++top]=data.length-1; '(3 QyCD
hE5?G;
while(top>0){ W1X3ArP]m8
int j=stack[top--];
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int i=stack[top--]; l3>e-kP
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pivotIndex=(i+j)/2; pXO09L/nv
pivot=data[pivotIndex]; C 8wGbU6`
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SortUtil.swap(data,pivotIndex,j); 03v+eT
6384$mT,S
file://partition u1 M8nb
l=i-1; $.4A?,d
r=j; %'s_=r`
do{ bKM*4M=k
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7`J2/(
SortUtil.swap(data,l,r); 2}pZyS
} \^"Vqx
while(l SortUtil.swap(data,l,r); 8Lx/ZGy
SortUtil.swap(data,l,j); L7buY(F(
D1Zy Js#
if((l-i)>THRESHOLD){ 4jebx
jZ
stack[++top]=i; l 1k&@1"
stack[++top]=l-1; >dJuk6J&c&
} ]VKQm(,0
if((j-l)>THRESHOLD){ :Q=y'<
stack[++top]=l+1; U52V1b
stack[++top]=j; sk3 9[9
} AJEbiP
]dNNw`1\V
} ptT-{vG
file://new InsertSort().sort(data); 5s3QN{h8
insertSort(data); Y,0Z&6 <
} #W)m({}
/** lb'tVO
* @param data uxD3+Q
*/ _xCYh|DlQ|
private void insertSort(int[] data) { bl
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int temp; &mVClq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V9$T=[
} |8CxMs
} 7ihcjyXB
} *w4#D:g
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} C @<T(`o
v%cCJ SO#
归并排序: Qf^c}!I
rN|=cn
package org.rut.util.algorithm.support; BZQ}c<Nl
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import org.rut.util.algorithm.SortUtil; @z ",1^I
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/** */IiL%g4u
* @author treeroot Y|r7gy9%
* @since 2006-2-2 i%.NP;Qq]M
* @version 1.0 I
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*/ <!>\
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public class MergeSort implements SortUtil.Sort{ X$6NJ(2G
xD&n'M]
/* (non-Javadoc) Jg=!GU/::
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g?"QahHG
*/ 2mzn{S)nV
public void sort(int[] data) { q,)V0Ffe[|
int[] temp=new int[data.length]; _"Bj`5S
mergeSort(data,temp,0,data.length-1); .8s-)I
} I?g}q,!]
YOLzCnI4
private void mergeSort(int[] data,int[] temp,int l,int r){ -)(=~|,Pq/
int mid=(l+r)/2; ,V!"4T,Z
if(l==r) return ; G-)e(u
mergeSort(data,temp,l,mid); UZs '[pm)
mergeSort(data,temp,mid+1,r); 9*s8%pL
for(int i=l;i<=r;i++){ <jJ'T?,
temp=data; -(TC'
} ]*| hd/j
int i1=l; #1$4<o#M
int i2=mid+1; 3v_j*wy
for(int cur=l;cur<=r;cur++){ K
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if(i1==mid+1) Sc{&h8KMTb
data[cur]=temp[i2++]; rT4Q^t"
else if(i2>r) I= :yfW
data[cur]=temp[i1++]; el5Pe{j'
else if(temp[i1] data[cur]=temp[i1++]; fpQFNV
else d)uuA;n
data[cur]=temp[i2++]; u^Nxvx3l0
} fB~O
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} bVoU|`c
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} 9u,8q:I.?
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改进后的归并排序: L[?nST18%
S!;LF4VA
package org.rut.util.algorithm.support; ~|r~NO
7[
i:o}!RZ>
import org.rut.util.algorithm.SortUtil; _1^8xFe2
5@P%iBA4(3
/** `)R?nVb
* @author treeroot )K~w'TUr
* @since 2006-2-2 "S5S|dBc
* @version 1.0 9!9>
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*/ AR%hf
public class ImprovedMergeSort implements SortUtil.Sort { ?Z q_9T7
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private static final int THRESHOLD = 10; bGv*-;*
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f=v
/* N.Dhu ~V
* (non-Javadoc) ''IoC j
* s/
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0$6*o}N%
*/ kt^yj"C>
public void sort(int[] data) { Q1Ux!$_
int[] temp=new int[data.length]; EYL]TeS
mergeSort(data,temp,0,data.length-1); (;aB!(_
} 9UwLF`XM
JqEW=5
private void mergeSort(int[] data, int[] temp, int l, int r) { Bv$UFTz
int i, j, k; 5[C ~wvO
int mid = (l + r) / 2; AUfS-
if (l == r) 7+}JgUh
return; e,HMwD
if ((mid - l) >= THRESHOLD) \m4T3fy
mergeSort(data, temp, l, mid); 7JUb Va%
else *8bK')W
insertSort(data, l, mid - l + 1); f~=r*&U
if ((r - mid) > THRESHOLD) )MZC>:
mergeSort(data, temp, mid + 1, r); \fZiL!E^7
else |uI?ySF
insertSort(data, mid + 1, r - mid); H;NbQ
q$[n`w-
for (i = l; i <= mid; i++) { B**Nn!}0
temp = data; nnwJYEi
} c%z'xM
for (j = 1; j <= r - mid; j++) { -v]Qhf&>
temp[r - j + 1] = data[j + mid]; DP9LO_{
} \M{[f=6llh
int a = temp[l]; RRADg^}l|"
int b = temp[r]; wv?RO*E
for (i = l, j = r, k = l; k <= r; k++) { ;o0#(xVz
if (a < b) { x)SralWb
data[k] = temp[i++]; b9~A-Z
a = temp; 9sSN<7
} else { `'i( U7?
data[k] = temp[j--]; hmpr%(c `
b = temp[j]; 7]Em,
} T%$jWndI
} qmglb:"
} $A2n{
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/** Qd]we$G
* @param data ST1'\Eo
* @param l j.m(ltGh
* @param i 8w_7O>9
*/ >|g?wC}V;
private void insertSort(int[] data, int start, int len) { KkcXNjPVS
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xb:&(6\F
} r^0F"9eOL
} -MBV$:_R
} 5'KA'>@
} s@8w-]"
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堆排序: M5g\s;y;
T 2F6)e
package org.rut.util.algorithm.support; =>iA gp'#
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import org.rut.util.algorithm.SortUtil; j$Ab>}g]
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/** ICC%,$C~l
* @author treeroot !|
#83
* @since 2006-2-2 Q >Qibr
* @version 1.0 KC`q#&dt
*/ >R\lqLILb,
public class HeapSort implements SortUtil.Sort{ ]QVNn?PA8
:9|\Z|S(I
/* (non-Javadoc) /,@p\Ae5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -VxDNT}Tr
*/ \$sjrqKnu
public void sort(int[] data) { q1?&Ev^
MaxHeap h=new MaxHeap(); 0@I S
h.init(data); zCv"]%
for(int i=0;i h.remove(); y5r4+2B
System.arraycopy(h.queue,1,data,0,data.length); 7aV%=_
} ,:LA.o}h
lVOu)q@l7g
private static class MaxHeap{ nKa$1RMO
":a\z(*t
void init(int[] data){ $+p?Y)h .
this.queue=new int[data.length+1]; ryB}b1`D
for(int i=0;i queue[++size]=data; 2i;7{7
fixUp(size); FMA6_fju4
} Q7Iw[=;\
} 0:w"M<80
SZaS;hhhHu
private int size=0; ?POUtRN
#Cpd9|
private int[] queue; g0R~&AN!g
h/?l4iR*
public int get() { HK`I\,K
return queue[1]; 8>hwK )av
} <-D/O$q
8Nu=^[qwQM
public void remove() { }PTV] q%
SortUtil.swap(queue,1,size--); hxQqa 0B
fixDown(1); !;?+>R)h
} C8
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file://fixdown dXF^(y]l
private void fixDown(int k) { F~h7{@\
int j; X}+>!%W!}
while ((j = k << 1) <= size) { o2<#s)GpY
if (j < size %26amp;%26amp; queue[j] j++; wgCa58H76
if (queue[k]>queue[j]) file://不用交换 0lhVqy}:}o
break; "g$IP9?U
SortUtil.swap(queue,j,k); sI{ M
k = j; g+J-Zg6
} BNL;Biyt7
} +v=C@2T
private void fixUp(int k) { dqN5]Sb2B
while (k > 1) { yUpgoX(6
int j = k >> 1; ,7<f9 EVY
if (queue[j]>queue[k]) [VE8V-
break; 7(pF[LCF
SortUtil.swap(queue,j,k); h*- Pr8
k = j; 4^M
} {{QELfH2
} D8$G `~hD
6oGYnu;UZ
} gHo?[pS%y
*s:(jDlv
} :Of^xj>A
+F^^c2E
SortUtil: =>_\fNy
.>WxDQIo
package org.rut.util.algorithm; #`)(e JF
, GP?amh
import org.rut.util.algorithm.support.BubbleSort; h2XfC.f
import org.rut.util.algorithm.support.HeapSort; y !_C/!d
import org.rut.util.algorithm.support.ImprovedMergeSort; 4rLL[??
import org.rut.util.algorithm.support.ImprovedQuickSort; )r
jiY%F$
import org.rut.util.algorithm.support.InsertSort;
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import org.rut.util.algorithm.support.MergeSort; i%0ur}p
import org.rut.util.algorithm.support.QuickSort; tP$<UKtU
import org.rut.util.algorithm.support.SelectionSort; eQ]~dA8>
import org.rut.util.algorithm.support.ShellSort; #T'{ n1AI
$w`=z<2yo1
/** Y2~nBb
* @author treeroot
Pu" P9
* @since 2006-2-2 toBHkiuD
* @version 1.0 (2$p{Uf
*/ y.< m#Zzt
public class SortUtil { *^VRGfpb
public final static int INSERT = 1; |l]XpWV
public final static int BUBBLE = 2; Yp^rR }N
public final static int SELECTION = 3; X:nN0p #
public final static int SHELL = 4; RwpdRBb
public final static int QUICK = 5; ~E2KZm
public final static int IMPROVED_QUICK = 6; %D\[*
public final static int MERGE = 7; >JFO@O5
public final static int IMPROVED_MERGE = 8; ~d|A!S`
public final static int HEAP = 9; f Sa"%8%
r{L>
F]Tw
public static void sort(int[] data) { PgF*
1
sort(data, IMPROVED_QUICK); of%Ktm5Qi
} Y[}>CYO
private static String[] name={ -"'j7t:
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }HFN3cq;C
}; U`, 6 * MS
i:Y^{\Z?V
private static Sort[] impl=new Sort[]{ <7/R,\Wg~
new InsertSort(), Z`ID+
new BubbleSort(), su{poQ}K
new SelectionSort(), 0"
new ShellSort(), Q ayPo]O
new QuickSort(), R;&AijS8
new ImprovedQuickSort(), SB H(y)
new MergeSort(), &^}1O:8e
new ImprovedMergeSort(), DgId_\Ze
new HeapSort() 96( v
}; e>+i>/Fn{h
cQy2"vtU
public static String toString(int algorithm){ Lt?lv2k=L
return name[algorithm-1]; vWzm@
} SJb&m-
PUp6Q;AdQ
public static void sort(int[] data, int algorithm) { J\twZ>w~0
impl[algorithm-1].sort(data); n'n/Tu
} @\0ez<.p}
BC&S> #\
public static interface Sort { ;=)k<6
public void sort(int[] data); =_JjmTy;a
} cM(:xv
CpUkCgg
public static void swap(int[] data, int i, int j) { >N^Jj:~l
int temp = data; yr)G]K[/
data = data[j]; B nFwlw
data[j] = temp; LGq'WU31:)
} oK9( /v
}
Y[ j6u\y