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。 z/1{OL
插入排序: 0Q~@F3N-\>
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package org.rut.util.algorithm.support; |;u}sX1t9
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import org.rut.util.algorithm.SortUtil; z<pJYpxH
/** \cQ .|S
* @author treeroot R#(G%66
* @since 2006-2-2 4DLq}v
* @version 1.0 n|i"S`
*/ Sdd9Dv?!
public class InsertSort implements SortUtil.Sort{ 3]U]?h
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/* (non-Javadoc) 1$ML #5+,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mJC3@V
s
*/ PJgp+u<
public void sort(int[] data) { #U=;T]!'$
int temp; \t3qS
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *
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} |NrrTN?>
} 0xpx(T[
} TfRGA(+#
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} Ht[{ryTxu
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冒泡排序: ?_q+&)4-o
9<s4yZF@x
package org.rut.util.algorithm.support; ~]WVG@-
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import org.rut.util.algorithm.SortUtil; aMK~1]Cx
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/** ksWSMxm
* @author treeroot Ct]A%=cZW
* @since 2006-2-2
/\=MBUN
* @version 1.0 ?4[H]BK
*/ :\yc*OtX
public class BubbleSort implements SortUtil.Sort{ u3ZCT" !
DQJG,?e{
/* (non-Javadoc) &mE?y%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ](K0Fwo`;"
*/ LJQJ\bT?
public void sort(int[] data) { Cca0](R*&
int temp; 8o-bd_
for(int i=0;i for(int j=data.length-1;j>i;j--){ rt4Z;
if(data[j] SortUtil.swap(data,j,j-1); ~xyw>m+o.
} 9z ?7{2C
} K:5eek
} u&]vd /
} |n6Eg9
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} 8#LJ* o
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选择排序: ^Jx$t/t
XnUO*v^]
package org.rut.util.algorithm.support; `v nJ4*
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import org.rut.util.algorithm.SortUtil; A6UO0lyu
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/** ^O6*e]C$
* @author treeroot [-w@.^:]X
* @since 2006-2-2 nr\q7
* @version 1.0 v{;7LXy0
*/ Llz['"m
public class SelectionSort implements SortUtil.Sort { HDIk9WC^
<I=$ry6 8
/* P7GRSjG
* (non-Javadoc) -_8*41
* c3xl9S,5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H+ZSPHs
*/ =_pwA:z"A
public void sort(int[] data) { +=P@HfVfiq
int temp; 1n%8j*bJq
for (int i = 0; i < data.length; i++) { rwqv V^
int lowIndex = i; / 8gL.i$
for (int j = data.length - 1; j > i; j--) { sR_xe}-
if (data[j] < data[lowIndex]) { {'bip`U.
lowIndex = j; 7*+TP~WI
} \pY^^ l*
} -50AX1h31:
SortUtil.swap(data,i,lowIndex); ;Zut@z4\
} `M@Ak2gcR+
} Y2T$BJJ
cF+ X,]=6
} '$m7ft}
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Shell排序: N$ alUx*
O/OiQ^T
package org.rut.util.algorithm.support; fA^Em)cs2
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import org.rut.util.algorithm.SortUtil; n:#TOU1ix<
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/** uV]ULm#,i
* @author treeroot ",B'k
* @since 2006-2-2 [CN$ScK,
* @version 1.0 $3P`DJo
*/ ,Og4
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public class ShellSort implements SortUtil.Sort{ _ PWj(});
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/* (non-Javadoc) ~+n,1]W_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BWq/TG=>
*/ z&+
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public void sort(int[] data) { d;G~hVu
for(int i=data.length/2;i>2;i/=2){ H;KDZO9W
for(int j=0;j insertSort(data,j,i); @Hjea1@t
} 8X7{vN_3K
} yTAvF\s$(
insertSort(data,0,1); hWEnn=BW
} 'K@0Wp
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/** Q/^A #l[
* @param data sic$uT
* @param j N:BL=}V
* @param i Dpqt;8"2L
*/ 2(#Ks's?
private void insertSort(int[] data, int start, int inc) { Dy9\O77>
int temp; <8o(CA\
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @LX6hm*}
} M] EsS^/X
} )pgrl
} `y!/F?o+!
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} OkH\^
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快速排序: }GZbo kWg.
B5=($?5^6%
package org.rut.util.algorithm.support; TMj4w,g4
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import org.rut.util.algorithm.SortUtil; nkY@_N
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/** EESN\_{~.
* @author treeroot G*n2Ii
* @since 2006-2-2 j$@tK0P
* @version 1.0 `rFAZcEj%
*/ mP}#Ccji?
public class QuickSort implements SortUtil.Sort{ Np,2j KF(
=,/D/v$m'2
/* (non-Javadoc) #$ 1$T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4E3g,%9u
*/ ecHP
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public void sort(int[] data) { Wk7WK` >i
quickSort(data,0,data.length-1); #G;X' BN
} q~Jq/E"f
private void quickSort(int[] data,int i,int j){ SS3-+<z
int pivotIndex=(i+j)/2; fC<m^%*zgA
file://swap z@h~Vb&I
SortUtil.swap(data,pivotIndex,j); s3 QEi^~
"^rNr_
int k=partition(data,i-1,j,data[j]); wyY*:{lZ
SortUtil.swap(data,k,j); o'=VZT9
if((k-i)>1) quickSort(data,i,k-1); 4u1KF:g
if((j-k)>1) quickSort(data,k+1,j); isK;mU?<
~brFo2
} pB01J<@m
/** +"!aM?o
* @param data B;t=B_oK
* @param i E_:QSy5G
* @param j ]T<^{jG
* @return Dn;p4T@
*/ p^QZ q>v
private int partition(int[] data, int l, int r,int pivot) { M?@pN<|
do{ _m'ysCjA
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fE;Q:# Z.
SortUtil.swap(data,l,r); 8A2z 5Aa
} ">90E^
while(l SortUtil.swap(data,l,r); t1i(;|8|
return l; [xaisXvI4
} L\ j:
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} f(Hu {c5yV
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改进后的快速排序: i/qTFQst
_
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package org.rut.util.algorithm.support; kW-81
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import org.rut.util.algorithm.SortUtil; $@uU@fLB
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/** ?pwE0N^
* @author treeroot ?0vNEz[
* @since 2006-2-2 AU{:;%.g
* @version 1.0 -
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*/ 8;zDg$(
public class ImprovedQuickSort implements SortUtil.Sort { SG'JE}jzO
a G27%(@
private static int MAX_STACK_SIZE=4096; ImkrV{,e
private static int THRESHOLD=10; oY3>UZ5\
/* (non-Javadoc) 8T5k-HwE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %a8&W
*/ {B{i(6C(
public void sort(int[] data) { j\2[H^
int[] stack=new int[MAX_STACK_SIZE]; n["
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int top=-1; A,XfD} +:Z
int pivot; Ja [ 4A0.
int pivotIndex,l,r; ]PX}b
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stack[++top]=0; %e=!nRc
stack[++top]=data.length-1; T\sNtdF`:
t4K56H.L?
while(top>0){ C0m\SNR
int j=stack[top--]; =ApY9`
int i=stack[top--]; Q7a(P
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pivotIndex=(i+j)/2; *\ECf.7jz
pivot=data[pivotIndex]; ExrY>*v
6
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SortUtil.swap(data,pivotIndex,j); ! D1zXXq
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file://partition X"/~4\tJ"
l=i-1; dWpk='
r=j; ,"G\f1
do{ m|4LbWz
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BKb<2
SortUtil.swap(data,l,r); eyB_l.U7
} F(4yS2h(
while(l SortUtil.swap(data,l,r); rsxRk7s@
SortUtil.swap(data,l,j); z7=fDe
-
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if((l-i)>THRESHOLD){ p;->hn~D'5
stack[++top]=i; 5gK~('9'?1
stack[++top]=l-1; >oY^Gx
} -c={+z "
if((j-l)>THRESHOLD){ pVG>A&4
stack[++top]=l+1; W~dE
stack[++top]=j; T$c+m\j6
} 8
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Rx S884
} *m&&1W_
file://new InsertSort().sort(data); wn84?$BGd
insertSort(data); e,Zv]Cym
} v5 Y)al@
/** 'NjSu64W
* @param data
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*/ 0yQe5i}
private void insertSort(int[] data) { e_.~n<=
int temp; (02g#A`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EfSMFPM
} yN:>!SQ
} </ZHa:=7
} >hb-5xC
v"
FO
} yJ J8"s~i
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归并排序: az
bUc4M
Z;J`5=TS
package org.rut.util.algorithm.support; /v$]X4 S`
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import org.rut.util.algorithm.SortUtil; ]h8/M7k
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/** jt%WPkY:
* @author treeroot "1%*'B^}bw
* @since 2006-2-2 U_Y;fSl>
* @version 1.0 n/-N;'2J
*/ {6tx,; r(F
public class MergeSort implements SortUtil.Sort{ W-XN4:,qI
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/* (non-Javadoc) )"~=7)~<^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V"g~q?@F
*/ R `Q?J[e
public void sort(int[] data) { k4mTZ}6E
int[] temp=new int[data.length]; _z%\'(l+
mergeSort(data,temp,0,data.length-1); 9OZ>y0)K~
} Gx|Dql
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private void mergeSort(int[] data,int[] temp,int l,int r){ ^Kum%<[i
int mid=(l+r)/2; UP*yeT,P,
if(l==r) return ; u[J7Y
mergeSort(data,temp,l,mid); 9/H^t*5t
mergeSort(data,temp,mid+1,r); x`3.Wu\
for(int i=l;i<=r;i++){ R\
e#$"a5
temp=data; 4ioNA/E
} d#Wn[h$"
int i1=l; ;]u1~
int i2=mid+1; w6v1 q:20
for(int cur=l;cur<=r;cur++){ KM@`YV_"g
if(i1==mid+1) yh$ ~*UV
data[cur]=temp[i2++]; :z124Zf
else if(i2>r) WiwwCKjSa
data[cur]=temp[i1++]; i*b4uHna
else if(temp[i1] data[cur]=temp[i1++]; SmvwhX
else 10TSc
j
data[cur]=temp[i2++]; bY&YSlO
} 'F6#l"~/
} v6(,Ax&
^EUQ449<p
} $"(3M nR
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改进后的归并排序: BDnBBbBrz
;<~j)8
package org.rut.util.algorithm.support; i&5!9m`Cw
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import org.rut.util.algorithm.SortUtil;
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/** '9Qd.q7s|b
* @author treeroot E.Pje@d
* @since 2006-2-2 :e52hK1[T
* @version 1.0 -ca]Q|m 8
*/ Wd1 IX^7C%
public class ImprovedMergeSort implements SortUtil.Sort { tUn&z?7bF
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private static final int THRESHOLD = 10; 739l%u }<
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/* F^[M
* (non-Javadoc) ^>t-v
* YU*46 hA1B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jCam,$oE
*/ 5Bzuj`
public void sort(int[] data) { .v$ue`
int[] temp=new int[data.length]; IcO9V<Q|
mergeSort(data,temp,0,data.length-1); ^JiaR)#r
} :v''"+\
=/M$
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private void mergeSort(int[] data, int[] temp, int l, int r) { zww?
int i, j, k; R^F7a0"
int mid = (l + r) / 2; ?Of{c,2 .
if (l == r) W[@"H1bVH
return; ?BXP}]
if ((mid - l) >= THRESHOLD) t>m8iS>
mergeSort(data, temp, l, mid); #r-j.f}yx
else d#RF0,Y 9
insertSort(data, l, mid - l + 1); 38OIFT
if ((r - mid) > THRESHOLD) Z={UM/6w
mergeSort(data, temp, mid + 1, r); OME!W w
else #a/n5c&6/
insertSort(data, mid + 1, r - mid); G >I.
5Q2TT $P
for (i = l; i <= mid; i++) { <7@mg/T
temp = data; x Q@&W;
} p]X!g
for (j = 1; j <= r - mid; j++) { 4Q&Xb <
temp[r - j + 1] = data[j + mid]; ^p'D <!6sK
} F%Ro98?{
int a = temp[l]; _+0uju?o}
int b = temp[r]; eimA *0Cq
for (i = l, j = r, k = l; k <= r; k++) { ".Tf<F
if (a < b) { "`y W]v
data[k] = temp[i++];
m,xy4
a = temp; *S,v$ VX
} else { ,S7~=S
data[k] = temp[j--]; x)%% 5
b = temp[j]; ghE?8&@ iq
} ?tW%"S^D
} 6kgCS{MZ
} ~`tJvUo0
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/** weTK#O0@v
* @param data e2,<,~_K6
* @param l \emT:Frb
* @param i ;D%5 nnr
*/ 0e[ tKn(
private void insertSort(int[] data, int start, int len) { iT)2 ?I6!
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mmh nw(/
} \" 5F;J
} !nZI? z ;
} a3DoLq"/
} W]C_oh
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堆排序: 6x`\
J2x
od|N-R
package org.rut.util.algorithm.support; _Ct@1}aa4x
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import org.rut.util.algorithm.SortUtil; =rs=8Ty?S
@k#z&@b
/** H>@JfYZ0
* @author treeroot "!w[U{
* @since 2006-2-2 1+.y,}F6b
* @version 1.0 * wQZ'
*/ q/aL8V<"z
public class HeapSort implements SortUtil.Sort{ {HE.mHy
_KT]l./
/* (non-Javadoc) >Gw%r1)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CU}
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*/ [hvig$L
public void sort(int[] data) { : .UX[!^
MaxHeap h=new MaxHeap(); Wr}a\}R
h.init(data); :IOn`mRYu
for(int i=0;i h.remove(); 7,&3=R<
System.arraycopy(h.queue,1,data,0,data.length); z}Mb4{d1
} '/]fZ|
4)c"@Zf
private static class MaxHeap{ 0t/z"
#o}{cXX#
void init(int[] data){ CC]@`R5
this.queue=new int[data.length+1]; Is#v6:#^
for(int i=0;i queue[++size]=data; .D M1Knj
fixUp(size); 2#Q"@
} l[!C-Tq
} NjCLL`?f
FSXKH {Z
private int size=0; cl9;2D"Zm!
5y
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private int[] queue; oM?
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public int get() { FB^dp}
return queue[1]; {0m[:af&
} E<fwl1<88
tpy:o(H
public void remove() { ES2d9/]p-
SortUtil.swap(queue,1,size--); o*5e14W(:
fixDown(1); G~mB=]
} 6iAc@
file://fixdown t]YLt ,
private void fixDown(int k) { "}y3@ M^
int j; l1.Aw|'D
while ((j = k << 1) <= size) { P\G C8KV]
if (j < size %26amp;%26amp; queue[j] j++; +T8XX@#
if (queue[k]>queue[j]) file://不用交换 l{7Dv1[Ss
break; p|O-I&Xd
SortUtil.swap(queue,j,k); Wb-'E%K
k = j; 1:~m)"?I_^
} 1(\I9L&J
} ]nr
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private void fixUp(int k) { }od7YL
while (k > 1) { j]]ziz,E
int j = k >> 1; %RR|QY*
if (queue[j]>queue[k]) j2v[-N4 {J
break; '\vmfp=
SortUtil.swap(queue,j,k); ThiPT|5u
k = j; #I@[^^Vw
} g he=mQ-
} ,-NLUS
"w
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} :!*;0~#
uu46'aT
} yl]Cm?8
Ss#{K;
SortUtil: JqV<A3i
J*4_|j;Z-E
package org.rut.util.algorithm; yl;$#aZB
mjr{L{H=?+
import org.rut.util.algorithm.support.BubbleSort; ."@a1_F|
import org.rut.util.algorithm.support.HeapSort; Y_iF$m/R
import org.rut.util.algorithm.support.ImprovedMergeSort; e+[J[<8
import org.rut.util.algorithm.support.ImprovedQuickSort; !5
:1'$d]H
import org.rut.util.algorithm.support.InsertSort; \iTPJcb5
import org.rut.util.algorithm.support.MergeSort; p]IhQnj2
import org.rut.util.algorithm.support.QuickSort; 'rx,f
import org.rut.util.algorithm.support.SelectionSort; ^Y*.Ktp,o
import org.rut.util.algorithm.support.ShellSort; o9SfWErZ
b}{9
:n/SC
/** >|&OcU
* @author treeroot ba:du
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* @since 2006-2-2 RgzSaP;;
* @version 1.0 2|H'j~
*/ U3iyuE
public class SortUtil { ng)yCa_Ny
public final static int INSERT = 1; JdNPfkOF
public final static int BUBBLE = 2; U~`^Y8UF
public final static int SELECTION = 3; w5JC 2
public final static int SHELL = 4; gJcL{]
public final static int QUICK = 5; O5n]4)<
public final static int IMPROVED_QUICK = 6; BE@H~<E J
public final static int MERGE = 7; RBojT
public final static int IMPROVED_MERGE = 8; n7YWc5:CaL
public final static int HEAP = 9; OG$iZiuf
E$zq8-p|
public static void sort(int[] data) { {(:)
sort(data, IMPROVED_QUICK); Ku,A}5-6
} :zy'hu;
private static String[] name={ rQ-z2Pw
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g,]5&C T3v
}; -VT?/=Y
s
zpQ/E
private static Sort[] impl=new Sort[]{ fi@+swfc
new InsertSort(), kFs kn55
new BubbleSort(), UDq KF85H
new SelectionSort(), iKTU28x
new ShellSort(), _=$!T;}lE
new QuickSort(), 4Tw1gas.
new ImprovedQuickSort(), cO?"
new MergeSort(), R$,iDv.jI
new ImprovedMergeSort(), @V
CQ4X7T
new HeapSort() ^)]*10
}; ${:$jX[
9 7qS.Z27
public static String toString(int algorithm){ s~ZC!- [;
return name[algorithm-1]; aV%rq9Tp
} *LQY6=H
uWT&`m_(2
public static void sort(int[] data, int algorithm) { w)>z3Lm
impl[algorithm-1].sort(data); ![C$H5
} &l*dYzqq
QnAf A%
public static interface Sort { 5}aC'j\
public void sort(int[] data); !d@`r1t
} )/^$JYz
&x5ZEe4
public static void swap(int[] data, int i, int j) { 'aWZ#GS*
int temp = data; oYM3$.{E
data = data[j]; fmN)~-DV9`
data[j] = temp; W3j|%
} h>Pg:*N,(
} $
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