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。 8nCp\0
插入排序: Y25^]ON*\^
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package org.rut.util.algorithm.support; 8'A72*dhX
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import org.rut.util.algorithm.SortUtil; [ $pmPr2
/** j(iuz^I
* @author treeroot <:&de8bT
* @since 2006-2-2 >{C\H.N
* @version 1.0 t6+YXjXK
*/ B:<
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public class InsertSort implements SortUtil.Sort{ 5,1{Tv`
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/* (non-Javadoc) 44\cI]!{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kZLMtj-
*/ !nd*W"_gQ/
public void sort(int[] data) { Ha%F"V*
int temp; 5r b-U7 /
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9'nH2,_
} Gh}yb-$N`&
} o:"anHs
} 9xFO]Y"
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} KVkMU?6
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冒泡排序: Ts9ktPlm
WkP
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package org.rut.util.algorithm.support; DIaYo4
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import org.rut.util.algorithm.SortUtil; d,0 }VaY=D
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/** Ya#h'+}
* @author treeroot )}MHx`KT2
* @since 2006-2-2 WA6!+Gy
* @version 1.0 ?<U{{C
*/ =Q<L
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public class BubbleSort implements SortUtil.Sort{ Md,pDWb
v.=/Y(J
/* (non-Javadoc) maNW{"1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %g3,qI
*/ P:C2G(V1AR
public void sort(int[] data) { -oyO+1V
int temp; bc I']WgB-
for(int i=0;i for(int j=data.length-1;j>i;j--){ HpVjee
if(data[j] SortUtil.swap(data,j,j-1); $g10vF3
} D\1k.tI
} kM/Te{<
} EpYy3^5d
} 3QXjD/h
[q*%U4qGO
} -.IEgggf
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选择排序: R"AUSO|{
1u|V`J)0
package org.rut.util.algorithm.support; t*G/]
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import org.rut.util.algorithm.SortUtil; . ]@=es
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/** id^sr
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* @author treeroot (;_FIUz0
* @since 2006-2-2 J=W0Xi!
* @version 1.0 VZy4_v=
*/ I.'b'-^
public class SelectionSort implements SortUtil.Sort { #]]Su91BA
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/* *Dmx&F=3,5
* (non-Javadoc) yxt[=
C
* dRi5hC$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B@y(.
*/ _oFs #kW
public void sort(int[] data) { 2xwlKmI N
int temp; l?8M
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for (int i = 0; i < data.length; i++) { 5J2=`=FK
int lowIndex = i; Ge+0-I6Ju
for (int j = data.length - 1; j > i; j--) { )$Mmn
if (data[j] < data[lowIndex]) { 4|?{VQ
lowIndex = j; Oakb'
} 7.Kc:7
} #A7jyg":
SortUtil.swap(data,i,lowIndex); C?4JXW
} o|BP$P8V
} MJ`3ta
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} D*PYr{z'
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Shell排序: .7NNT18
o Y}]UB>
package org.rut.util.algorithm.support; !7bw5H
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import org.rut.util.algorithm.SortUtil; a:,y
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/** )D&M2CUw"f
* @author treeroot 8~lIe:F-
* @since 2006-2-2 !4"^`ors$
* @version 1.0 U69u'G:
*/ :O<bA&:d
public class ShellSort implements SortUtil.Sort{ x%+{VStA
d[ >`")2)
/* (non-Javadoc) WLa!.v>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %+>s#Q2d
*/ "syh=BC
v
public void sort(int[] data) { p?D2)(
for(int i=data.length/2;i>2;i/=2){ gi/@j
for(int j=0;j insertSort(data,j,i); $2^`Uca
} F>je4S;
}
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insertSort(data,0,1); A>`945|
} ^9OUzTF
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/** ?3ig)J,e[
* @param data w]b,7QuNz
* @param j 0Sq][W=
* @param i '>$EOg"
*/ >(w2GD?
private void insertSort(int[] data, int start, int inc) { `afIYXP
int temp; U[L9*=P;
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); VGHWNMT
} p(;U@3G
} do*}syQ`O
} =gfI!w
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} YJg,B\z}
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快速排序: 9SlNq05G7
(&|_quP7O
package org.rut.util.algorithm.support; @E( 7V(m/
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import org.rut.util.algorithm.SortUtil; D(p\0V
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/** _lzyMEdr
* @author treeroot NN0$}ac p
* @since 2006-2-2 Gb[`R}^dq
* @version 1.0 uw\2qU3gk
*/ D|Iur W1f
public class QuickSort implements SortUtil.Sort{ 2!&&|Mh}
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/* (non-Javadoc) aQ^umrj@?9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZyOv.,y
*/ ?D,=37
public void sort(int[] data) { Om{l>24i.\
quickSort(data,0,data.length-1); }$MN|s
} lis/`B\x
private void quickSort(int[] data,int i,int j){ ^7;JC7qmN
int pivotIndex=(i+j)/2; Qk!;M|
file://swap +`7KSwa
SortUtil.swap(data,pivotIndex,j); xq6cKtSv
N#lDW~e'
int k=partition(data,i-1,j,data[j]); 'r(1Nj
SortUtil.swap(data,k,j); -a*K$rnB
if((k-i)>1) quickSort(data,i,k-1); DD" $1o"
if((j-k)>1) quickSort(data,k+1,j); 1/p*tZP8i
??TMSH
} QL6C,#6
/** LjL[V'JL
* @param data f.24:Dw,
* @param i ~GE$myUT\p
* @param j E?(xb B
* @return o=FE5"t
*/ 85EQ5yY
private int partition(int[] data, int l, int r,int pivot) { #%J5\+ua
do{ $+.l*]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $$:ZX
SortUtil.swap(data,l,r); $/6;9d^
} BCe_@
while(l SortUtil.swap(data,l,r); G'YH6x,
return l; )54%HM_$k
} \!]Ua.e<
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} LZMYr
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改进后的快速排序: f+rz|(6vs{
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package org.rut.util.algorithm.support; .]aF
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import org.rut.util.algorithm.SortUtil; Sa19q.~%
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/** kB5.(O
* @author treeroot x `V;Y]7'
* @since 2006-2-2 cb5,P~/q
* @version 1.0 52upoU>}2
*/ [AV4m
public class ImprovedQuickSort implements SortUtil.Sort { =^
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private static int MAX_STACK_SIZE=4096; [r/k% <
private static int THRESHOLD=10; s; UH]
/* (non-Javadoc) hHqh{:q{v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kx_h1{
*/ ]Qm]I1P
public void sort(int[] data) { wP,JjPUt
int[] stack=new int[MAX_STACK_SIZE]; fDx9iHGv
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int top=-1; +cU>k}
int pivot; sB69R:U;
int pivotIndex,l,r; 8w({\=
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stack[++top]=0; |yo\R{&6
stack[++top]=data.length-1; V.wqZ {G
64:fs?H
while(top>0){ mo~*C
int j=stack[top--]; p }[zt#v
int i=stack[top--]; =_YG#yS
qY 4#V k
pivotIndex=(i+j)/2; $=?@*p
pivot=data[pivotIndex]; [pVamE
$ cj>2.
SortUtil.swap(data,pivotIndex,j); `K,1K
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file://partition Zw
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l=i-1; ^&g=u5
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r=j; Fs[aa#v4B
do{ VbBPB5 $q
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); u{["50~
SortUtil.swap(data,l,r); B c2p(z4
} >vo=]cw
while(l SortUtil.swap(data,l,r); l7De6A"
SortUtil.swap(data,l,j); Fd*8N8Pi
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if((l-i)>THRESHOLD){ TIvRhbu
stack[++top]=i; 'mV9 {lj7E
stack[++top]=l-1; If%/3UJ@
} H4]Ul
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if((j-l)>THRESHOLD){ zSb PW6U
stack[++top]=l+1; :kfp_o+J
stack[++top]=j; B:7mpSnEQ
} G9JAcO1
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} KD^N)&k^Kp
file://new InsertSort().sort(data); ZoArQ(YFy
insertSort(data); h;3cd0
} 3j3N!T9
/** &HSq(te
* @param data vzmc}y G
*/ x`6<m!d`
private void insertSort(int[] data) { ]vuwkn+)
int temp; _ 84ut
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XV^1tX>f{
} Hty0qr3
} A/`%/0e
} %\i9p]=
n@ G[
} %6_AM
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归并排序: Z(!00^
o6//IOZ
package org.rut.util.algorithm.support; "W(Q%1!Wi
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import org.rut.util.algorithm.SortUtil; fxT-j s#S
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/** /a6Xa&(B
* @author treeroot U T="2*3gz
* @since 2006-2-2 S]E.KLR?[;
* @version 1.0 I"KN"v^
*/ +>4;Z d!@d
public class MergeSort implements SortUtil.Sort{ } CfqG?)
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/* (non-Javadoc) &?h,7
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a@R]X5[O
*/ Ag@;
public void sort(int[] data) { u_rdmyq$x/
int[] temp=new int[data.length]; _SA5e3#
mergeSort(data,temp,0,data.length-1); cp o-.
} U)3DQ6T99
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private void mergeSort(int[] data,int[] temp,int l,int r){ NssELMtF!g
int mid=(l+r)/2; ;D$)P7k6
if(l==r) return ; +E1h#cc)
mergeSort(data,temp,l,mid); IUwm}9Q!
mergeSort(data,temp,mid+1,r); Y/7 $1k
for(int i=l;i<=r;i++){ <mAhr
temp=data; gynh#&r
} uIZWO.OdU
int i1=l; !A%<#Gjt
int i2=mid+1; rylzcN9RM$
for(int cur=l;cur<=r;cur++){ M}!2H*
if(i1==mid+1) PiA0]>
data[cur]=temp[i2++]; HF(KN{0.B
else if(i2>r) 3d|9t9v
data[cur]=temp[i1++]; YQY%M>F@d%
else if(temp[i1] data[cur]=temp[i1++]; :^(>YAyHj^
else Qf@
data[cur]=temp[i2++]; D::rGB?.b
} G\(|N9^:
} 8(* [Fe9
F8apH{&t
} 50={%R
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改进后的归并排序: p/h
Rk<K6
sM9+dh
package org.rut.util.algorithm.support; ,TFIG^Dvq
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import org.rut.util.algorithm.SortUtil; p|]\P%,\
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/** J_;o|gqX
* @author treeroot ? YG)I;(
* @since 2006-2-2 |iwP:C^\mJ
* @version 1.0 _]:z \TDn
*/ #_u~/jhX
public class ImprovedMergeSort implements SortUtil.Sort { V5rST +
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private static final int THRESHOLD = 10; BT(CM,bp
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/* w`5xrqt@
* (non-Javadoc) Ih"XV
* Sm5H_m!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ' MxrQ;|S
*/ vuYSVI2=H
public void sort(int[] data) { O6OP =K!t:
int[] temp=new int[data.length]; {E8~Z8tT
mergeSort(data,temp,0,data.length-1); VX1-JxY
} \P6$mh\T
15sp|$&`
private void mergeSort(int[] data, int[] temp, int l, int r) { >:b Q
int i, j, k; @/31IOIV]`
int mid = (l + r) / 2; ^-
d%r
if (l == r) -(=eM3o-9m
return; 3p'I5,}
if ((mid - l) >= THRESHOLD) ^N)R=tl
mergeSort(data, temp, l, mid); gdQvp=v]
else zO iu5
insertSort(data, l, mid - l + 1); 1Yn
+<I
if ((r - mid) > THRESHOLD) S.f5v8
mergeSort(data, temp, mid + 1, r); Pjc
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else .qZI$
l.
insertSort(data, mid + 1, r - mid); f=9|b
qXwPDq/
for (i = l; i <= mid; i++) { &mx)~J^m
temp = data; Dg?:/=,=9r
} v'3J.?N
for (j = 1; j <= r - mid; j++) { .yEBOMNZ
temp[r - j + 1] = data[j + mid]; 7yh/BZ1
} @qYp>|AF
int a = temp[l]; [;J>bi;3N
int b = temp[r]; @
rc{SB
for (i = l, j = r, k = l; k <= r; k++) { %B.yW`,X
if (a < b) { %xyou:~0zs
data[k] = temp[i++]; K9up:.{QQ
a = temp; N=7pK&NHSG
} else { k-^mIJo}
data[k] = temp[j--]; 5f 5f0|ok
b = temp[j]; :w^Ed%>y7
} #e$5d>j(
} ]'=)2
.}
} W}mn}gTQ
>: g3k
/** R)m'lMi|
* @param data D-._z:_
* @param l +O?KNZ
* @param i 7](KV" %V
*/ Xx>X5Fy
private void insertSort(int[] data, int start, int len) { OL^l 3F
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V:
TM]
} L bmawi^
} JVSA&c%3
} @pRlxkvV
} g0["^P1tV
m3/O.DY%0
堆排序: m()RU"WY
ElW~48
package org.rut.util.algorithm.support; ,tu.2VQc@
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import org.rut.util.algorithm.SortUtil; @X;!92i
/k,-P
/** kZGRxp9
* @author treeroot Tq[kl'_
* @since 2006-2-2 0i\M,TNf*
* @version 1.0 fO[+LR
'ax
*/ 2`N,,
public class HeapSort implements SortUtil.Sort{ I$Op:P6.E
Zm_UR*"
/* (non-Javadoc) 8&qZ0GLaT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?q{,R"
*/ LQRQA[^
public void sort(int[] data) { j~jV'f.:H
MaxHeap h=new MaxHeap(); =*c7i]@}
h.init(data); .7avpOfz
for(int i=0;i h.remove(); #PH~1`vl
System.arraycopy(h.queue,1,data,0,data.length); IS &ZqE(`e
} NUWDc]@J*
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private static class MaxHeap{ po2!
UMm!B `M
void init(int[] data){ biU^[g("
this.queue=new int[data.length+1]; -7@/[9Gf`:
for(int i=0;i queue[++size]=data; zGkS^Z=(
fixUp(size); |8l<$J
} @v)p<r^M">
} D"2&P^-
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private int size=0; L>aLqQ3
YSic-6z0Ms
private int[] queue; lJ}_G>GJ
DpvI[r//'*
public int get() { L(|N[#
return queue[1]; c]n1':FT"
} 1Vrh4g.l
QLvHQtzwX
public void remove() { J$GUB3
G
SortUtil.swap(queue,1,size--); 1VG4S){}\9
fixDown(1); Uyg5i[&X@
} aJbO((%$|u
file://fixdown ~-_kM
private void fixDown(int k) { 4gz
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int j; "!ug_'VW
while ((j = k << 1) <= size) { [6%VRqY
if (j < size %26amp;%26amp; queue[j] j++; %InA+5s`
if (queue[k]>queue[j]) file://不用交换 c4^ks&)'
break; 9.gXzPH
SortUtil.swap(queue,j,k);
4~Vx3gEV:
k = j; =JK@z
} g9}DnCT*.
} /_AnP
private void fixUp(int k) { 4C61GB?Vy
while (k > 1) { NV72
int j = k >> 1;
!sQY&*
if (queue[j]>queue[k]) |Mup8(gCk
break; [B#R94
SortUtil.swap(queue,j,k); 'MUv5Th
k = j; 4ew"
%Cs*
} bYpntV
} t^R][Ay&
bnq;)>&
} ' g=
ODNM+#}`
} pN:Kdi
bpJ(XN}E
SortUtil: [q)8N
Ln')QN
package org.rut.util.algorithm; t{^*6XOcJ
|ef7bKU8
import org.rut.util.algorithm.support.BubbleSort; eTI%^d|
import org.rut.util.algorithm.support.HeapSort; [!HEQ8 2g
import org.rut.util.algorithm.support.ImprovedMergeSort; "GMBjT8
import org.rut.util.algorithm.support.ImprovedQuickSort; }Gz~nf%
import org.rut.util.algorithm.support.InsertSort; B}Z63|/N
import org.rut.util.algorithm.support.MergeSort; MDhRR*CBh
import org.rut.util.algorithm.support.QuickSort; |:q=T
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import org.rut.util.algorithm.support.SelectionSort; v7BA[j Qr
import org.rut.util.algorithm.support.ShellSort; jnK WZ/R
rb5~XnJk
/** J%v=yBC2
* @author treeroot z;{iM/Xe
* @since 2006-2-2 TN!j13,
* @version 1.0 U\4g#!qj
*/ `#F{Waww'
public class SortUtil { ww\CQ6/h
public final static int INSERT = 1; l&OKBUG
public final static int BUBBLE = 2; [842&5Pd?
public final static int SELECTION = 3; DBW[{DE
public final static int SHELL = 4; QRc{vUR&
public final static int QUICK = 5; w28o}$b`
public final static int IMPROVED_QUICK = 6; @=bLDTx;c)
public final static int MERGE = 7; A!s`[2 Z
public final static int IMPROVED_MERGE = 8; jSh5!6O
public final static int HEAP = 9; ddJQC|xR}
>kj`7GA
public static void sort(int[] data) { l2zFKCGF(
sort(data, IMPROVED_QUICK); @Owb?(6?
} cs,N <|
private static String[] name={ +%zAQeb
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7E r23Q
}; V+*
P2|
q8X feoUV
private static Sort[] impl=new Sort[]{ ]fx"4qKM
new InsertSort(), T*8VDY7
new BubbleSort(), >BIMi^
new SelectionSort(), f=(?JT
new ShellSort(), q@QksAq
new QuickSort(), tX9{hC^
new ImprovedQuickSort(), 5gH1.7i b
new MergeSort(), 0Is,*Srr
new ImprovedMergeSort(), kw>v:F<M
new HeapSort() 7`-Zuf
}; 6Z>FTz_
!o5
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public static String toString(int algorithm){ nOt&pq7
return name[algorithm-1]; CY
4gSe?
} 5gb|w\N>
04LI]'
public static void sort(int[] data, int algorithm) { B -?6M6#
impl[algorithm-1].sort(data); aGrIQq/k)%
} oI0M%/aM
*;l]8.
public static interface Sort { &vo--V1|
public void sort(int[] data); iqC|G/
} hEA<o67
opY@RJ]
public static void swap(int[] data, int i, int j) { 6_J$UBT
int temp = data; y~Bh
data = data[j]; h%o%fH&F!
data[j] = temp; 8qk?E6
} Nh8Q b/::
} v0
nj M