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。 C|8.$s<
插入排序: eo4;?z
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package org.rut.util.algorithm.support; /w$<0hH#'8
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import org.rut.util.algorithm.SortUtil;
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/** PSNfh7g
* @author treeroot ]N,n7v+}
* @since 2006-2-2 $d'GCzYvZ
* @version 1.0 g`k_o<'JC
*/ 43^%f-J5
public class InsertSort implements SortUtil.Sort{ E80C0Q+V
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/* (non-Javadoc) s8Xort&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FE,&_J"
*/ $_%yr
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public void sort(int[] data) { xQT`sK+
int temp; *2Il{KOA^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1$]4g/":o
} Ol"*(ea-TX
} 615, P/
} c%n[v3]
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} !7]4sXL{
% V/J6
冒泡排序: ]W-l1
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package org.rut.util.algorithm.support; nJ<h}*[
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import org.rut.util.algorithm.SortUtil; S;[9
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/**
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* @author treeroot #p_3j 0S
* @since 2006-2-2 4{7O}f
* @version 1.0 s~W:N.}*
*/ CA, &R<]
public class BubbleSort implements SortUtil.Sort{ +}@1X&v:
b`)^Ao:
/* (non-Javadoc) BrcT`MM[(=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I"eXoqh
*/ Ze[ezu
public void sort(int[] data) { (sSMH6iCif
int temp; why;1z>V
for(int i=0;i for(int j=data.length-1;j>i;j--){ sN.h>bd
if(data[j] SortUtil.swap(data,j,j-1); 4IuQQ
} df; -E
} PBc.}TSGj
}
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} l6IpyIex
maW,YOyRN
} jr29+>
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选择排序: Z6#}6Y{
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package org.rut.util.algorithm.support; ?]+{2&&$
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import org.rut.util.algorithm.SortUtil; O:3LA-vA
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/** {PZNJ 2~
* @author treeroot {L^b['h@
* @since 2006-2-2 }c?/-ab>
* @version 1.0 #&a-m,Y$sx
*/ 3eX;T +|o
public class SelectionSort implements SortUtil.Sort { |7KW'=O
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/* Q$r1beA
* (non-Javadoc) ('BFy>@
* OLp;eb1g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +MU|XT_5|6
*/ aUUr&yf_L
public void sort(int[] data) { P0WI QG+
int temp; ]Ng K(IU
for (int i = 0; i < data.length; i++) { MdM^!sk&`
int lowIndex = i; )D?\ru H
for (int j = data.length - 1; j > i; j--) { T5(]/v,UT
if (data[j] < data[lowIndex]) { 'i#m%D`dt
lowIndex = j; 6Tjj++b(*
} t4>%<'>e
} A82Bn|J
SortUtil.swap(data,i,lowIndex); DA;,)A&=Q
} "5Orj*{
} y8=p;7DY
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} {YnR]|0&
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Shell排序: 0*0]RC5?
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package org.rut.util.algorithm.support; *;b.x"
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import org.rut.util.algorithm.SortUtil; )bN|*Bw3
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F
/** ;T6{J[
h
* @author treeroot C":i56
* @since 2006-2-2 wi]ya\(*yl
* @version 1.0 t:y}
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*/ `@?f@p$(B
public class ShellSort implements SortUtil.Sort{ <,/k"Y=
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/* (non-Javadoc) el
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g_ 'F(An
*/ aBv3vSq>Q
public void sort(int[] data) { "BSSA%u?c
for(int i=data.length/2;i>2;i/=2){ 4pNIsjl}
for(int j=0;j insertSort(data,j,i); 1UG5Q-
} p4mlS
} -XNjyXm2
insertSort(data,0,1); {KkP"j'7h
} =[{YI2S
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/** )\fAy
* @param data Zqwxi1
* @param j S
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* @param i 6;"^Id
*/ Ucnj7>+"
private void insertSort(int[] data, int start, int inc) { wV\;,(<x=%
int temp; a|aRUxa0"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); H{}0-0o
} zGKDH=Yy ;
} lFvRXV^+f
} 022nn-~
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} g+shz{3zvz
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快速排序: OT-!n
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package org.rut.util.algorithm.support; 29eg.E
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import org.rut.util.algorithm.SortUtil; Fh t$7V
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/** $r0~&$T&
* @author treeroot *]uo/g
* @since 2006-2-2 LObS
7U
* @version 1.0 Bqo8G->
*/ Y4E UW%
public class QuickSort implements SortUtil.Sort{ (pY'v/ a-
w#V{'{DKp
/* (non-Javadoc) nT
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )nJo\HFXv
*/ % H"A%
public void sort(int[] data) { 1O" Mo
quickSort(data,0,data.length-1); yL =*yC
} -"*UICd
private void quickSort(int[] data,int i,int j){ YbS$D
int pivotIndex=(i+j)/2; "$)Nd+ny
file://swap y k=o
SortUtil.swap(data,pivotIndex,j); [AAG:`
:5kgJu
int k=partition(data,i-1,j,data[j]); &E98&[`7
SortUtil.swap(data,k,j); L0ZgxG3:g
if((k-i)>1) quickSort(data,i,k-1); l+# l\q%l
if((j-k)>1) quickSort(data,k+1,j); 2Eq?^ )s
];@"-H
} WSA;p=_
/** ~`J/618
* @param data dOm`p W ^
* @param i Z.9?u;
* @param j aDJ\%
* @return ziFg+i%s
*/ B^4D`0G[4
private int partition(int[] data, int l, int r,int pivot) { Yt^<^l77D
do{ ym*,X@Qg^
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (#zSVtZ
SortUtil.swap(data,l,r); Rx';P/F0C
} b-sbR R
while(l SortUtil.swap(data,l,r); n<Vq@=9AE
return l; WxNPAJ6YH
} 6k?,'&z|~
z}XmRc_Ko
} D$k<<dvv
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改进后的快速排序: Vs>/q:I
UsT+o
package org.rut.util.algorithm.support; ?sF<L/P0
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import org.rut.util.algorithm.SortUtil; $i#
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/** x9fNIuAQ
* @author treeroot 1.+w&Y5
* @since 2006-2-2 e;LJdd
* @version 1.0
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*/ U}9B
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public class ImprovedQuickSort implements SortUtil.Sort { A0L&p(i
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private static int MAX_STACK_SIZE=4096; ] r8
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private static int THRESHOLD=10; ,,*i!%Adw
/* (non-Javadoc) 4]\f}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XhF7%KR
*/ j\V9o9D
public void sort(int[] data) { mDn*v(
f
int[] stack=new int[MAX_STACK_SIZE]; R-v99e iN
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int top=-1; F"7dN *7
int pivot; $s]c'D)
int pivotIndex,l,r; ]k2Jf}|
jI`1>>N&1
stack[++top]=0; aBV{Xr~#(
stack[++top]=data.length-1; %m\dNUz4g
,^dyS]!d$
while(top>0){ _J<^'w^;%
int j=stack[top--]; P%Fkd3e+
int i=stack[top--]; yn;h.m [):
V?{[IMRC
pivotIndex=(i+j)/2; -49z.(@ki
pivot=data[pivotIndex]; d1=kHU4_9
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SortUtil.swap(data,pivotIndex,j); MGUzvSf
7
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file://partition ?sb
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l=i-1; ,TuDG*YA
r=j; nF0V`O\T
do{ b>R/=tx
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !L3M\Q0
SortUtil.swap(data,l,r); cE7xNZ;Bh
}
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while(l SortUtil.swap(data,l,r); zB 6u%u WR
SortUtil.swap(data,l,j); }P[xZ_S1
*W()|-[V3
if((l-i)>THRESHOLD){ W_z2Fs"A
stack[++top]=i; + V:P-D
stack[++top]=l-1; 5l"EQ9
} sP1wO4M?{
if((j-l)>THRESHOLD){ +J`EBoIo
stack[++top]=l+1; \Y[
stack[++top]=j; $4yv)6G
} v?Q|;<
} $:uN
} OLAwRha
file://new InsertSort().sort(data); ?A|8J5EV
insertSort(data); rDNz<{evj
} A?{ X5`y
/** _*b1]<
* @param data FI,>v`
*/ E}U[VtaC
private void insertSort(int[] data) { S"FIQ&n
int temp; TV$Pl[m
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (<?6X9F:N
} V=";vRS8
} ?2ZggV
} b-}nv`9C
>h3r\r\n3
} +dWx?$n
K\5'pp1
归并排序: : `D[0
m&)5QX
package org.rut.util.algorithm.support; L(tA~Z"k
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import org.rut.util.algorithm.SortUtil; _is<.&f6
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/** M{Ss?G4H
* @author treeroot J8|F8dcz
* @since 2006-2-2 2UYtFWB9o
* @version 1.0 F,0@z/8a
*/ w,L P M+
public class MergeSort implements SortUtil.Sort{ sjOyg!e
:+;AXnDM~
/* (non-Javadoc) l?CUd7P(a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b>|3?G
*/ e(/~;"r{
public void sort(int[] data) { }V.Wp6"S
int[] temp=new int[data.length]; ZA@QP1
mergeSort(data,temp,0,data.length-1); =j[zMO
} !a&@y#x
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5>.)7D%
int mid=(l+r)/2; [uxhdR`T
if(l==r) return ; m=&j2~<i
mergeSort(data,temp,l,mid); ODn6%fp%
mergeSort(data,temp,mid+1,r); &Mz3CC6
for(int i=l;i<=r;i++){ y7#$:+jQv
temp=data; zNT~-
} M7"I]$|\
int i1=l; V>}@--$c-r
int i2=mid+1; ]PVPt,c
for(int cur=l;cur<=r;cur++){ D`]Lm 24_]
if(i1==mid+1) %OW LM
data[cur]=temp[i2++]; b#h?O}
else if(i2>r) Uq/#\7/rL
data[cur]=temp[i1++]; Ui6f>0?
else if(temp[i1] data[cur]=temp[i1++]; fu|N{$h%X
else @MIBW)P<
data[cur]=temp[i2++]; jRN*W2]V
} S -j<O&h~C
} j&(2ze:=*$
:5X1Tr=A
} Vx_lI
#3
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改进后的归并排序: c-z2[a8
-L>\ 58`
package org.rut.util.algorithm.support; WN9<
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import org.rut.util.algorithm.SortUtil; UeB8|z
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/** j`I[M6Qxh
* @author treeroot $3BCA)5:
* @since 2006-2-2 R
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* @version 1.0 (A2x
*/ Y(IT#x?p
public class ImprovedMergeSort implements SortUtil.Sort { )e.Y"5My
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private static final int THRESHOLD = 10; *OU>s;"$
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/* `<ITLT
* (non-Javadoc) J<x?bIetj
* U,"lOG'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "?_adot5v
*/ }K,:aN,44\
public void sort(int[] data) { 'Im7^!-d
int[] temp=new int[data.length]; PbOLN$hP
mergeSort(data,temp,0,data.length-1); Iu6KW :x
} 4?XX_=+F|
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private void mergeSort(int[] data, int[] temp, int l, int r) { `Z]Tp1U
int i, j, k; [^r0red
int mid = (l + r) / 2; P9Hv){z
if (l == r) ^_b+o
return; bF %#KSVw
if ((mid - l) >= THRESHOLD) -jsNAQ
mergeSort(data, temp, l, mid); a,o)i8G9R<
else vTN/ho,H
insertSort(data, l, mid - l + 1); $|.x !sA
if ((r - mid) > THRESHOLD) 7"F
w8;k
mergeSort(data, temp, mid + 1, r); .{D[!Dp#h
else AfKJaDKf
insertSort(data, mid + 1, r - mid); ~[XDK`B
L%`~`3%n-
for (i = l; i <= mid; i++) { LXj2gsURu%
temp = data; .58>KBj(
} FRI<A8
for (j = 1; j <= r - mid; j++) { $Ch!]lJA
temp[r - j + 1] = data[j + mid]; \UFno$;mA
} h.c<A{[I6c
int a = temp[l];
r(pp =
int b = temp[r]; KL]K< A
for (i = l, j = r, k = l; k <= r; k++) { )
Ph.
if (a < b) { k$kq|
data[k] = temp[i++]; NGB%fJ
a = temp; %Qc#v$;+J
} else { .>>@q!!s!
data[k] = temp[j--];
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b = temp[j]; "m +Eu|{
} /b,+YyWi%
} XNwY\y
} vC~];!^
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/** xdp!'1n."g
* @param data |RwpIe8~
* @param l -xq)brG
* @param i 5%kt;ODS
*/ zsA6(?)u
private void insertSort(int[] data, int start, int len) { ~Kda#=
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `),7*gn*)
} N;tUrdgQ
} h4H~;Wl0
} =-jkp
} (V@g?|LZ
&'V_80vA
堆排序: x|*v(,7b]!
x{<WJ|'B
package org.rut.util.algorithm.support; $7gzu4f
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import org.rut.util.algorithm.SortUtil; a`(6hL3IT
/ _v5B>
/** !zLd,`
* @author treeroot s$6zA
j!
* @since 2006-2-2 v=nq P{
* @version 1.0 ]]@jvU_?kS
*/ Fh& `v0
public class HeapSort implements SortUtil.Sort{ `g6XVa*%#
w[\*\'Vm0
/* (non-Javadoc) wl^bvHG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4XK*sR0-`
*/ Cl[ '6Lk
public void sort(int[] data) { o!L1Qrh
MaxHeap h=new MaxHeap(); iZ#dS}VlJ
h.init(data); Zoj.F
for(int i=0;i h.remove(); :gDIGBK,
System.arraycopy(h.queue,1,data,0,data.length); 0trVmWQ8
} w=d#y
)1
vn3<LQ]
private static class MaxHeap{ '#xxjhF^
Rct|"k_"Ys
void init(int[] data){ r~F T,
this.queue=new int[data.length+1]; Qi2yaEB
for(int i=0;i queue[++size]=data; Xtbuy/8"1
fixUp(size); 3sc5meSu'
} G40,KCa
} NUiZ!&
n )YNt
private int size=0; eS fT+UL
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private int[] queue; l_iucN
7^'TU=ss_
public int get() { 9>u2;
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return queue[1]; v^y3r
} SSycQ4[{o
}
IFZ$Y
public void remove() { xy46].x-
SortUtil.swap(queue,1,size--); wx -NUTRim
fixDown(1); z %{>d#rw
} Mcc774'*9
file://fixdown jVL<7@_*
private void fixDown(int k) { ^"v~hjM#
int j; (f5!36mz
while ((j = k << 1) <= size) { J|_&3@r
if (j < size %26amp;%26amp; queue[j] j++; ^M6v;8EU
if (queue[k]>queue[j]) file://不用交换
/XS6X
break; #rMMOu9r2
SortUtil.swap(queue,j,k); :Gqyj_|<
k = j; 9=@j]g|
} [Ua4{3#
} ]Gow
private void fixUp(int k) { ['R2$z
while (k > 1) { PKT0Drv}c7
int j = k >> 1; ?H eC+=/Z
if (queue[j]>queue[k]) SPOg'
break; G%S=K2v
SortUtil.swap(queue,j,k); +e<P7}ZQ
k = j; Fzh%#z0
} 9vCn^G%B
} {=IK(H
VE4!=4
} ,=B
"%=S
'cy35M
} -'BJhi\Y]~
O7ceSz
SortUtil: irqlU
J)A1`(x&T
package org.rut.util.algorithm; 'e02rqip{
HKv:)h{?
import org.rut.util.algorithm.support.BubbleSort; #6fp"
import org.rut.util.algorithm.support.HeapSort; H&E c*MT
import org.rut.util.algorithm.support.ImprovedMergeSort; l-_voOP
import org.rut.util.algorithm.support.ImprovedQuickSort; | ctGxS9
import org.rut.util.algorithm.support.InsertSort; "p.MJxH
import org.rut.util.algorithm.support.MergeSort; S0/@y'q3en
import org.rut.util.algorithm.support.QuickSort; ]kbmbO?M
import org.rut.util.algorithm.support.SelectionSort; rmUTl
import org.rut.util.algorithm.support.ShellSort; &|iFhf[o
pA='(G
/** vmAMlgZ8{<
* @author treeroot `j0T[Pi
* @since 2006-2-2 1lfkb1BM
* @version 1.0 bM_Y(TgJ
*/ f%ZqK_CW
public class SortUtil { [0yKd?e
public final static int INSERT = 1; ?(Dkh${@
public final static int BUBBLE = 2; 9H2^4D8
public final static int SELECTION = 3; YoGnk^$
public final static int SHELL = 4; =#^%; 6 6z
public final static int QUICK = 5; iOPv
% [
public final static int IMPROVED_QUICK = 6; '?E^\\"*
public final static int MERGE = 7; ldrKk'S,B
public final static int IMPROVED_MERGE = 8; cbsy&U
public final static int HEAP = 9; zBay 3a
;WJ}zjo >
public static void sort(int[] data) { Wd~aSz9
sort(data, IMPROVED_QUICK); N/DcaHFYo
} yJWgz`/L
private static String[] name={ 15r,_Gp8
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hdW",Bf'
}; }+#-\a2
)I 4d_]&
private static Sort[] impl=new Sort[]{ N6cf`xye
new InsertSort(), &BqRyUM$F
new BubbleSort(), ,IA0n79
new SelectionSort(), ~;aSX1
new ShellSort(), &fdH
HN
new QuickSort(), m;WUp{'
new ImprovedQuickSort(), "@Bc eD
new MergeSort(), BZQ98"Fz*
new ImprovedMergeSort(), ,G
e7
9(
new HeapSort() cn v4!c0
}; 2uZ
<q?=
:1q+[T/ @
public static String toString(int algorithm){ A1{P"p!
return name[algorithm-1]; -_
.f&l8
} bRJYw6oA<
GbwcbfH
public static void sort(int[] data, int algorithm) { ^6#FqK+{u
impl[algorithm-1].sort(data); a)MjX<y
} )W:`Q&/G
YM
0f_G=
public static interface Sort { ?Vb=W)Es
public void sort(int[] data); 1}tZ,w>
} yAU[A
|rH;}t|un
public static void swap(int[] data, int i, int j) { :t?9$ dL
int temp = data; -. L)-%wIV
data = data[j]; chQt8Ar3
data[j] = temp; S6h=}
V)
} e-,U@_B
} .S`Ue,H