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' A:J
插入排序: l,bZG3,6
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package org.rut.util.algorithm.support; .TN2s\:]jw
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import org.rut.util.algorithm.SortUtil; jgRCs.6
/** VO -784I
* @author treeroot qZsnd7o{l.
* @since 2006-2-2 ,y.3Fe
* @version 1.0 F6&P ~H
*/ p7 [(z
public class InsertSort implements SortUtil.Sort{ (j N]OE^
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/* (non-Javadoc) [=~!w_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iS-K
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*/ 4A o{M
public void sort(int[] data) { ND,`QjmZ
int temp; _LLshV3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3^ ~Zj95M
} Czh8zB+r
} Mjw[:70
} ~d+O/:=K_
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} Q
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冒泡排序: /Sj_y*x1e
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package org.rut.util.algorithm.support; $jcz?vH
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import org.rut.util.algorithm.SortUtil; cG(0q[
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/** gMay
* @author treeroot <G9<"{
* @since 2006-2-2 pn*d[M|k
* @version 1.0
2}!R
T
*/ iiN?\OO^~
public class BubbleSort implements SortUtil.Sort{ Sw
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/* (non-Javadoc) %mmxA6I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .f%vDBJS
*/ UzJ!Y / 5
public void sort(int[] data) { F*!gzKZ"
int temp; \7DCwu[0M
for(int i=0;i for(int j=data.length-1;j>i;j--){ hU+#S(t>b
if(data[j] SortUtil.swap(data,j,j-1); Xj;2h{#s
} kPedX
} )|:8zDuJ
} @?M;'xMbB
} 3Tw%W0q
](n69XX_
} !ABLd|tP
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选择排序: dcP88!#5-
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package org.rut.util.algorithm.support; i6A$1(:h
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import org.rut.util.algorithm.SortUtil; 8xgc[#
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/** n4R]+&*
* @author treeroot Crg#6k1~EN
* @since 2006-2-2 ~=Fk/
* @version 1.0 9Q=>MOB-
*/ ^T+<!k
public class SelectionSort implements SortUtil.Sort { 1sMV`qv>
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/* ]%||KC!O
* (non-Javadoc) !8Y3V/)NU
* %cd]xQpCp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i
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*/ _rG-#BKW8L
public void sort(int[] data) { 3U>S]#5}
int temp; wH!}qz/
for (int i = 0; i < data.length; i++) { H!#5!m&
int lowIndex = i; A` =]RJ
for (int j = data.length - 1; j > i; j--) { %'kX"}N/
if (data[j] < data[lowIndex]) { epYj+T
lowIndex = j; sI4QI\*4
} Ho>p ^p
} QdirE4W
SortUtil.swap(data,i,lowIndex); x6jm-n
} 35}P0+
} JqQ3C}z
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} &!4(
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Shell排序: )v};C<
Jfe~ ,cI
package org.rut.util.algorithm.support; L#[HnsLp_
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import org.rut.util.algorithm.SortUtil; R:BBF9sK?
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/** H]U"+52h
* @author treeroot @ljZw(
* @since 2006-2-2 U:J /\-
* @version 1.0 <kROH0+
*/ D.
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public class ShellSort implements SortUtil.Sort{ F6~b#Jz&i
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/* (non-Javadoc) l#mtND3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]}5`7
*/ Q-:Ah:/
public void sort(int[] data) { *P&OxVz
for(int i=data.length/2;i>2;i/=2){ ?Z5$0-g'hU
for(int j=0;j insertSort(data,j,i); rknzo]N,
} =":@Foa
} IM$'J
insertSort(data,0,1); LxIuxt=X|p
} `Nkx7Z~w:
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/** ozT._C
* @param data T..-)kL+p
* @param j 69N1 mP
* @param i )0'Y et}
*/ K~P76jAe$
private void insertSort(int[] data, int start, int inc) { HE9.
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int temp; "MW55OWYU
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1LV|t+Sex
} "tpvENz2s
} *
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} \%Pma8&d
R%Kl&c
} t!NrB X
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快速排序: k&n\
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package org.rut.util.algorithm.support; o-~-F+mj#
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import org.rut.util.algorithm.SortUtil; ^.nwc#
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/** 9
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* @author treeroot ytg7p 5{!i
* @since 2006-2-2 .0rJIO
* @version 1.0 ^XtHF|%0T
*/ $XU-[OF%:9
public class QuickSort implements SortUtil.Sort{ ^!N;F"
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/* (non-Javadoc) 7MR:X#2v>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :h3#1fko
*/ !$g(&
public void sort(int[] data) { avF&F
quickSort(data,0,data.length-1); f:)]FHPB1
} QSO5 z2|
private void quickSort(int[] data,int i,int j){ [I#Q
int pivotIndex=(i+j)/2; b=6ZdN1
file://swap 8f5%xY$
SortUtil.swap(data,pivotIndex,j); <6~/sa4GN
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int k=partition(data,i-1,j,data[j]); !.x=r
SortUtil.swap(data,k,j); Y;~EcM
if((k-i)>1) quickSort(data,i,k-1); rCV$N&rK
if((j-k)>1) quickSort(data,k+1,j); LX&=uv%-^
Ly@U\%.
} MZgmv
/** &Z#Vw.7U
* @param data I$rW[l2
* @param i "i;*\+x
* @param j &e5^v
* @return "Wzij&WkQ
*/ Z3&XTsq
private int partition(int[] data, int l, int r,int pivot) { F>hVrUD8
do{ vLVSZX
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ktj(&/~}
SortUtil.swap(data,l,r); 3/]f4D{MMY
} -K{\S2
while(l SortUtil.swap(data,l,r); #$9U=^Z[
return l; ;tZ}i4Ud
} C={sE*&dYX
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} f)!{y>Q
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改进后的快速排序: wpPxEp/
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package org.rut.util.algorithm.support; >rQ)|W=i
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import org.rut.util.algorithm.SortUtil; G>?x-!9qcH
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/** ~8S4Kj)%
* @author treeroot +LvZ87O^~
* @since 2006-2-2 SV$ASs
* @version 1.0 < :S?t2C
*/ >QbI)if`1
public class ImprovedQuickSort implements SortUtil.Sort { mo97GW
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private static int MAX_STACK_SIZE=4096; i1kh@s~8UC
private static int THRESHOLD=10; (5CX *)R
/* (non-Javadoc) #==[RNM%ap
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JJ= ~o@|c
*/ 7ipY*DT8
public void sort(int[] data) { y2d_b/
int[] stack=new int[MAX_STACK_SIZE]; dvH67 x
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int top=-1; >Kqj{/SWK
int pivot; J[Y lo&w3
int pivotIndex,l,r; s?z=q%-p
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stack[++top]=0; e3bAT.P
stack[++top]=data.length-1; [9# #Kb
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while(top>0){ m''i E
int j=stack[top--]; )Q N=>J
int i=stack[top--]; _'o^@v:
v:!7n
pivotIndex=(i+j)/2; \p_8YC
pivot=data[pivotIndex]; SK~;<>:37
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SortUtil.swap(data,pivotIndex,j); pRa oR
s2
t-T0;
file://partition o7Z#,>`2
l=i-1; WHh2fN'A5
r=j; UBpM8 /U
do{ (,Zz&3
AV
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;U5x'}%0]
SortUtil.swap(data,l,r); Ib<5u
} omDi<-
while(l SortUtil.swap(data,l,r); v:so85(S<
SortUtil.swap(data,l,j); Ii2g+SlQDa
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if((l-i)>THRESHOLD){ x#!{5;V&K
stack[++top]=i; :D)&>{?
stack[++top]=l-1; M`f;-
} %)!~t8To
if((j-l)>THRESHOLD){ RI<Yg#
stack[++top]=l+1; gEe W1:AB
stack[++top]=j; ]f+D& qZ B
} :7AauoI
mqfEs0~I
} =iQ`F$M
file://new InsertSort().sort(data); Y_TL4
insertSort(data); "#"Fp&Z7
} % /wP2O<
/** 0zkT8'v
* @param data GqF.T#|
*/ -p]`(S%
private void insertSort(int[] data) { mU0r"\**c3
int temp; "=0lcbC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .$T:n[@
} Yk*57&QI
} 0OoO cc
} DG%%]
2ucsTh@
} APOU&Wd
*p<5(-J3
归并排序: ($ 1<Dj:
Z[A|SyZp
package org.rut.util.algorithm.support; M#gGD-
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import org.rut.util.algorithm.SortUtil; 26klW:2*
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/** W YqL
* @author treeroot M`,Z#)Af
* @since 2006-2-2 3Tte8]0
* @version 1.0 #p:jKAc3
*/ f;;
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public class MergeSort implements SortUtil.Sort{ )@&?i.
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/* (non-Javadoc) r:\ 5/0(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ff+9(P>*
*/ =2V;B
public void sort(int[] data) { q.K$b
int[] temp=new int[data.length]; ClVpb ew
mergeSort(data,temp,0,data.length-1); GeW$lA I
} ^# g;"K0
d"$oV~>P|
private void mergeSort(int[] data,int[] temp,int l,int r){ 9tW.}5V
int mid=(l+r)/2; R)d7b,_Yd
if(l==r) return ; X QoT},C
mergeSort(data,temp,l,mid); ?9ho|
mergeSort(data,temp,mid+1,r); NCh(-E
for(int i=l;i<=r;i++){ XIW:Nk!S
temp=data; 7bW!u*v-c
} b5,}w:
int i1=l; y5t Ap
int i2=mid+1; &JQ@(w
for(int cur=l;cur<=r;cur++){ %<o$
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if(i1==mid+1) ezy5Jqk5%
data[cur]=temp[i2++]; ,f""|X5
else if(i2>r) [LEh
data[cur]=temp[i1++]; kIZdND&
else if(temp[i1] data[cur]=temp[i1++]; 2*;Y%NcP[
else 'C8=d(mR=m
data[cur]=temp[i2++]; #?d#s19s
} !`Yi{}1_
} 9Q5P7}%p
Nk~dfY<s
} VX@G}3Ck
qc4"0Ap'
改进后的归并排序: NqfDY
*"bp}3$^^
package org.rut.util.algorithm.support; bB:X<
= 8e8!8
import org.rut.util.algorithm.SortUtil; T7_ SO,X
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/** uTloj.
* @author treeroot aI#n+PW
* @since 2006-2-2 Xr6 !b:UX
* @version 1.0 U[ungvU1U
*/ .7^-*HT}
public class ImprovedMergeSort implements SortUtil.Sort { 1X}Tp\e
a9_KQ=&CI
private static final int THRESHOLD = 10; 8 =Lv7G%
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/* ,^Srd20
* (non-Javadoc) %H~gN9Vn#@
* #\;w::
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HPH {{p
*/ ; SM^
public void sort(int[] data) { 13az[
int[] temp=new int[data.length]; YD.^\E4o
mergeSort(data,temp,0,data.length-1); :|mkI#P.
} :pu{3-n.
^W05Z!}
private void mergeSort(int[] data, int[] temp, int l, int r) { ^<Tp-,J$EN
int i, j, k; s;M*5|-
int mid = (l + r) / 2; %4KJ&R
(>[
if (l == r) *w,gi.Y3
return; T1di$8
if ((mid - l) >= THRESHOLD) EKw\a
mergeSort(data, temp, l, mid); ">&:(<
else ?i=!UN
insertSort(data, l, mid - l + 1); <vuX "
8
if ((r - mid) > THRESHOLD) 25[/'7_"
mergeSort(data, temp, mid + 1, r); ?a9k5@s
else qP'g}Pc
insertSort(data, mid + 1, r - mid); %$KO]
JU.%;e7
for (i = l; i <= mid; i++) { $NRb'
temp = data; #Kr.!uD
} E\N=p&g$
for (j = 1; j <= r - mid; j++) { (t['
temp[r - j + 1] = data[j + mid]; e>Y2q|S85
} ?0%TE\I8
int a = temp[l]; 0l@+xS;
int b = temp[r]; lM%fgyX
for (i = l, j = r, k = l; k <= r; k++) { -B(K Q T,J
if (a < b) { >D#}B1(!
data[k] = temp[i++]; X1dG'PQ
a = temp; GP'Y!cl
} else { kweTK]mT
data[k] = temp[j--]; 6x{IY
b = temp[j]; :J-5Q]#
} ~B\:
} *
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} e!Okc*,
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/** X5<.%@Z
* @param data 93DBZqN
* @param l ,RO(k4
* @param i .p}Kl$K]
*/ 1hS~!r'qqv
private void insertSort(int[] data, int start, int len) { x@}Fn:c!5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,O!aRvzap
} Z$XpoDbOy
} LS$82UB&
} h'KtG<+
} .U%"oD
KHN
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堆排序: }O
l$ 9,
package org.rut.util.algorithm.support; 74(J7
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import org.rut.util.algorithm.SortUtil; Af<>O$$6
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/** /D+$|kmW]
* @author treeroot fC|u
* @since 2006-2-2 ;P~S/j[ 8
* @version 1.0 Q>ytO'v1
*/ .Tv(1HAc2l
public class HeapSort implements SortUtil.Sort{ 9#6/c
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/* (non-Javadoc) sdD[`#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) = h( n+y<
*/ Ti'kn{
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public void sort(int[] data) { s+- aHn
MaxHeap h=new MaxHeap(); ?!oa15
h.init(data); 1?\ Y,+
for(int i=0;i h.remove(); >cL2PN_y
System.arraycopy(h.queue,1,data,0,data.length); 7k|(5P;
} ,2bAKa
H/Q)zDP
private static class MaxHeap{ i@L2W>{P
/)TEx}wk
void init(int[] data){ }}1Q<puM
this.queue=new int[data.length+1]; E
ET 2|*}
for(int i=0;i queue[++size]=data; V p{5Kxq
fixUp(size); Y_sVe
} ]'/]j
} T_T{c+,Zd$
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private int size=0; .?RjH6W
*,
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private int[] queue; e`F|sz]k"H
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public int get() { {[*_HAy7
return queue[1]; Jx w<*
} m)}MkC-
cO&9(.d
public void remove() { [^~9wFNtd
SortUtil.swap(queue,1,size--); G1tp
fixDown(1); K/cK6Yr
} nUHVPuQ/'T
file://fixdown O%e.u>=4%
private void fixDown(int k) { C|LQYz-{
int j; 2z3A"HrlA
while ((j = k << 1) <= size) { f*Js= hvO
if (j < size %26amp;%26amp; queue[j] j++; _9r{W65s
if (queue[k]>queue[j]) file://不用交换 ^j}sS!p
break; {m:R v&T
SortUtil.swap(queue,j,k); t@M] ec
k = j; gQ#T7
} 3~rc=e
} cU|jT8Q4H
private void fixUp(int k) { _xt(II
while (k > 1) { ^^uD33@_
int j = k >> 1; Uiw7Y\Im|
if (queue[j]>queue[k]) MGDv4cFE.
break; /GGu` f
SortUtil.swap(queue,j,k); YU(*kC8
k = j; o#/iR]3
} <t{AY^:r
} ?Nql7F4
FoCkTp+/
} %$| k3[4V
ZRGZ'+hw
} Dj(7'jT
Pc==]H(
SortUtil: :j4
[_9\
p5VSSvV\K
package org.rut.util.algorithm; u_=y,~s
kZ%W?#
import org.rut.util.algorithm.support.BubbleSort; ! -@!u
import org.rut.util.algorithm.support.HeapSort; Qe.kNdT+_
import org.rut.util.algorithm.support.ImprovedMergeSort; rF3]AW(
import org.rut.util.algorithm.support.ImprovedQuickSort; 1Z8oN3
import org.rut.util.algorithm.support.InsertSort;
m]q!y3
import org.rut.util.algorithm.support.MergeSort; 6qpV53H
import org.rut.util.algorithm.support.QuickSort;
d2yHfl]3
import org.rut.util.algorithm.support.SelectionSort; LfXr(2u
import org.rut.util.algorithm.support.ShellSort; N\p]+[6
5zna?(#}
/** J5( D7rp#
* @author treeroot ?<^AXLiKV
* @since 2006-2-2 ?I#hrv@
* @version 1.0 sbj(|1,ac
*/ bI.t<;
public class SortUtil { wCf~O'XLw
public final static int INSERT = 1; R"MRnr_4K
public final static int BUBBLE = 2; ^u}L;`L
public final static int SELECTION = 3; 1?*
public final static int SHELL = 4; K$K^=>I"o
public final static int QUICK = 5; wkqX^i7ls
public final static int IMPROVED_QUICK = 6; E{^ XlY
public final static int MERGE = 7; C;QAT
public final static int IMPROVED_MERGE = 8; 'J&f%kx"
public final static int HEAP = 9; dz
[!-M
@yXfBML?]
public static void sort(int[] data) { v:Tzv^
sort(data, IMPROVED_QUICK); Ch$*Gm19Z
} (/-hu[:
private static String[] name={ ,lA.C%4au~
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" AcI,N~~
}; \)K^=jM
@_:]J1jw7
private static Sort[] impl=new Sort[]{ Uw,2}yR
new InsertSort(), a22Mufl
new BubbleSort(), T,xPSN2A*
new SelectionSort(), \0lnxLA
new ShellSort(), 8:BIbmtt5
new QuickSort(), {u1V|q
new ImprovedQuickSort(), LK6; ?m
new MergeSort(), O=SkAsim
new ImprovedMergeSort(), M?&h~V1OI~
new HeapSort() lrfv+
}; ?(*t@
{k
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public static String toString(int algorithm){ I;Vu W
return name[algorithm-1]; [=B$5%A
} V=fEPM
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public static void sort(int[] data, int algorithm) { lds-T
impl[algorithm-1].sort(data); xss`Y,5?
} %dQxJMwj
E0`Lg
c
public static interface Sort { =K{\p`?
public void sort(int[] data); +)2s-A f-
} N3u((y/
Y0D}g3`
public static void swap(int[] data, int i, int j) { JQ4{` =,b
int temp = data; s'kDk2r
data = data[j]; Gmf B
data[j] = temp; .U T@p
} bdGIF'p%
} A^q[N