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。 bL0]Yuh
插入排序: IN1n^f$:
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; xZ2 1iQeN
/** $?:IRgAr
* @author treeroot .@mZG<vg
* @since 2006-2-2 s/~[/2[bnf
* @version 1.0 ?
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*/ im:[ViR {
public class InsertSort implements SortUtil.Sort{ 9%ct
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/* (non-Javadoc) sP@XV/`3L6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8aRmHy"9l
*/ Bw`? zd\*
public void sort(int[] data) { lc
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int temp; (?XIhpd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ny^uNIRPR
} q |Pebe=
} =w _T{V
} qa~ju\jm.
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} P*?2+.
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冒泡排序: x?0(K=h,
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package org.rut.util.algorithm.support; ^HP$r*
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import org.rut.util.algorithm.SortUtil; -Tuk.>i)
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/** g .:ZMV
* @author treeroot H)*%e G~
* @since 2006-2-2 K|~!oQ
* @version 1.0 q(s0dkrj
*/ {t0!N]'
public class BubbleSort implements SortUtil.Sort{ !m_y@~pV#u
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/* (non-Javadoc) 'X&"(M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yl' IL#n]r
*/ Op9+5]XF
public void sort(int[] data) { pG*W>F
int temp; z:dW 'U?1
for(int i=0;i for(int j=data.length-1;j>i;j--){ J$jLGy& '
if(data[j] SortUtil.swap(data,j,j-1); n3/Bs
} l_
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} 5 8U[IGs(
} PDgZb
} O6-';H:I]L
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} $V<fJpA
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选择排序: _Eq,udCso
5|bfrc
package org.rut.util.algorithm.support; ~U8#yo
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import org.rut.util.algorithm.SortUtil; )r*F.m{&:
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/** <Fl.W}?Q}
* @author treeroot B~<bc
* @since 2006-2-2 y?}<SnjP:
* @version 1.0 a)+*Gf7?
*/ ),
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public class SelectionSort implements SortUtil.Sort { 5X]f}6kT
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/* VeFfkg4
* (non-Javadoc) V5jy,Qi)
* 6@(o8i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +'[*ikxD=g
*/ 11A;z[Zk
public void sort(int[] data) { 5HAAa I
int temp; /b4>0DXT5
for (int i = 0; i < data.length; i++) { -"Nvu
int lowIndex = i; X1u\si%.4S
for (int j = data.length - 1; j > i; j--) { &,/-<y-S
if (data[j] < data[lowIndex]) { h2+"e# _
lowIndex = j; H}usL)0&&
} ,MLAW
} 6TQ[2%X'
SortUtil.swap(data,i,lowIndex); {FN4BC`3+
} [NGq$5
} 4*q6#=G
VjiwW%UOM
} d.U"lP/)D
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Shell排序: 9I1i(0q
<{eJbN p
package org.rut.util.algorithm.support; %wJ>V-\e
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import org.rut.util.algorithm.SortUtil; shY8h
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/** <@n3vO6
* @author treeroot `,c~M
* @since 2006-2-2 ub4(g~E
* @version 1.0 e:QH3|'y
*/ =$kSn\L,
public class ShellSort implements SortUtil.Sort{ ~>%% kQt
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/* (non-Javadoc) >(W t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [/J(E\9
*/ 6* tky;
public void sort(int[] data) { 8feLhWg'P
for(int i=data.length/2;i>2;i/=2){ /)Weg1b
for(int j=0;j insertSort(data,j,i); _#<7s`i
} 2.a{,d
} soB_j
insertSort(data,0,1); 4)snt3k
} catJC3
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/** BDi+*8
* @param data 2d OUY
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* @param j wFL7JwK:G
* @param i ]#FQde4]5
*/ kxY9[#:<fB
private void insertSort(int[] data, int start, int inc) { ;l@Ge`&u
int temp; <+<,$jGC-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v +?'/Q%
} GRgpy
} 17ynFHMd,
} J>0RN/38o
7"])Y
}
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快速排序: VQ2B|v
o~'UWU'#
package org.rut.util.algorithm.support; 1L_(n
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import org.rut.util.algorithm.SortUtil; X/S%0AwZ
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/** cN:ek|r
* @author treeroot ^QTkre
* @since 2006-2-2 zgSv -h+f
* @version 1.0 `S]DHxS
*/ B!1L W4^
public class QuickSort implements SortUtil.Sort{ vPu{xy
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/* (non-Javadoc) _&$nJu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Jq~39
*/ zj;KtgcE
public void sort(int[] data) { ~H626vT37
quickSort(data,0,data.length-1); )dRBI)P
} KC-@2,c9V
private void quickSort(int[] data,int i,int j){ };~I#X
int pivotIndex=(i+j)/2; 8-Z|$F"
file://swap >td\PW~X
SortUtil.swap(data,pivotIndex,j); <IQ}j^u-F
e[.JS6
int k=partition(data,i-1,j,data[j]); hJoh5DIE95
SortUtil.swap(data,k,j); 4~0@(3
if((k-i)>1) quickSort(data,i,k-1); ]7%+SH,RdD
if((j-k)>1) quickSort(data,k+1,j); TmgSV#G
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} a+`;:tX,
/** F#l!LER^1g
* @param data N8`q.;qewz
* @param i t[bZg9;
* @param j NKu*kL}W=
* @return X}]g;|~SN
*/ FzQ6UO~'
private int partition(int[] data, int l, int r,int pivot) { Z}r9jM
do{ 9Ui|8e~=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ~qb-uT\(99
SortUtil.swap(data,l,r); x/?w1
} q>dERN&
while(l SortUtil.swap(data,l,r); I- WR6s=
return l; 8G_KbS
} W&9X <c*
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} 20BU;D3
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改进后的快速排序: BGL-lJrG
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package org.rut.util.algorithm.support; c8qwsp
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import org.rut.util.algorithm.SortUtil; #j6qq3OG
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/** Q+^ "v]V`d
* @author treeroot h8? E+0
* @since 2006-2-2 NGuRyZp69&
* @version 1.0 |F?/L>
*/ `&o>7a;
public class ImprovedQuickSort implements SortUtil.Sort { d2<+Pp
h[j(@P
private static int MAX_STACK_SIZE=4096; Xwk_QFv3
private static int THRESHOLD=10; Vg8c}>7
/* (non-Javadoc) 4mwA o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uBxs`'C
*/ P&9&/0r=_
public void sort(int[] data) { k(3FT%p
int[] stack=new int[MAX_STACK_SIZE]; [!>DQE
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int top=-1; q-d#bKIf
int pivot; {s~t>R p+
int pivotIndex,l,r; E9PD1ADR
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stack[++top]=0; ]dQ
stack[++top]=data.length-1; E'F87P ^>
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while(top>0){ 5?C) v}w+
int j=stack[top--]; P#ot$@1v
int i=stack[top--]; sn:wLc/GAd
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pivotIndex=(i+j)/2; #P-T4R
pivot=data[pivotIndex]; &s_)|K
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SortUtil.swap(data,pivotIndex,j); "| KD$CY
DzG$\%G2R}
file://partition +p_>fO
l=i-1; mpDQhD[n
r=j; aA&}=lm
do{ =F90SyzTy
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E|omC_h
SortUtil.swap(data,l,r); S"Mm_<A$@
} y@u,Mv
while(l SortUtil.swap(data,l,r); e:zuP.R
SortUtil.swap(data,l,j); Q%^!j_#
.V\:)\<|
if((l-i)>THRESHOLD){ Tq!.M1{&
stack[++top]=i; s_Gf7uC
stack[++top]=l-1; jL9to6 Hmr
} hYU4%"X
if((j-l)>THRESHOLD){ Y|N.R(sAs&
stack[++top]=l+1; w2o5+G=
stack[++top]=j; ub=Bz1._
} j+QE~L
iP+3)
} V75P@jv5J
file://new InsertSort().sort(data); *S{fyYyM
insertSort(data); J+=+0{}
} guWX$C-+1
/** _q 1E4z
* @param data "o>gX'm*
*/ B>,&{ah/5J
private void insertSort(int[] data) { Fd/.\s
int temp; EZg$mp1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b0!ZA/YC-
} Jx4"~ 4
} .z&,d&E
} <B3$ODGJp
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} 4Q
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归并排序: o<nkK+=Afm
>.f'_2#Z&
package org.rut.util.algorithm.support; v* /}s :a
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import org.rut.util.algorithm.SortUtil; k&SI-jxj
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/** p}O[A`
* @author treeroot x^P ~+(g
* @since 2006-2-2 >'96SE3
* @version 1.0 *Z
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*/ Hlye:.$
public class MergeSort implements SortUtil.Sort{ KJ;NcUq
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/* (non-Javadoc) T9=55tpG9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;Vh5nO
*/ 3X
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public void sort(int[] data) { e:kd0)9
int[] temp=new int[data.length]; Y<EdFzle
mergeSort(data,temp,0,data.length-1); _vgFcE~E@
} W2G@-`,
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private void mergeSort(int[] data,int[] temp,int l,int r){ a2\r^fY/
int mid=(l+r)/2; :bV1M5
if(l==r) return ; DQRr(r~2Kj
mergeSort(data,temp,l,mid); >xJh!w<pB
mergeSort(data,temp,mid+1,r); w,v~
for(int i=l;i<=r;i++){ etkKVr;Kv
temp=data; +1Ua`3dWN_
} -P'KpX:]hd
int i1=l; i#W0
int i2=mid+1; l&LrcM
for(int cur=l;cur<=r;cur++){ UpIt"+d2&
if(i1==mid+1) yCLDJ%8
data[cur]=temp[i2++]; $MB/j6#j
else if(i2>r) /agX! E4s
data[cur]=temp[i1++]; wc.T;(
else if(temp[i1] data[cur]=temp[i1++]; H|i39XV
else {X'D07 q
data[cur]=temp[i2++]; 3ZEV*=+T5
} A,'JmF$d
} B>"O~ gZ{#
~99DE78
} :M'V**A(
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改进后的归并排序: Az"(I>VfD
qS{E+) P
package org.rut.util.algorithm.support; R x>>0%e.
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import org.rut.util.algorithm.SortUtil; 6~_TXy/
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/** P&0o~@`cL
* @author treeroot I"1H]@"=
* @since 2006-2-2 Y4.t :Uzr
* @version 1.0 zPKx: I3
*/ }g\1JSJ%H
public class ImprovedMergeSort implements SortUtil.Sort { drc]"6 k
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private static final int THRESHOLD = 10; c
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/* ,J63?EQ3
* (non-Javadoc) vOl<
* 1ehl=WN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i^zncDMA
*/ ]&mN~$+C
public void sort(int[] data) { uO,9h0y0W
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); q;<=MO/
} m5/d=k0l
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private void mergeSort(int[] data, int[] temp, int l, int r) { CCQ38P@rv
int i, j, k; a\BV%'Zqg
int mid = (l + r) / 2; Sb;=YW
1<
if (l == r) 8r46Wr7Q
return; |)pRkn8x
if ((mid - l) >= THRESHOLD) @ppT;9<d
mergeSort(data, temp, l, mid); ^OWA
else '!wI8f
insertSort(data, l, mid - l + 1); tDk !]
if ((r - mid) > THRESHOLD) 2iJ)K rw
mergeSort(data, temp, mid + 1, r); `$5 QTte
else Arzyq_ Yk
insertSort(data, mid + 1, r - mid); ][IEzeI_LN
)* \N[zm
for (i = l; i <= mid; i++) { d}2$J1`
temp = data; wG\ +C'&~
} Wu!s
for (j = 1; j <= r - mid; j++) { !iO%?nW;
temp[r - j + 1] = data[j + mid]; 'zg; *)x1/
} wcI?.
int a = temp[l]; S);SfNh%CL
int b = temp[r]; )*wM
DM5q
for (i = l, j = r, k = l; k <= r; k++) { qP}187Q1
if (a < b) { +%%Ef]
data[k] = temp[i++]; }+{?
Ms
a = temp; } qf=5v
} else { f=L&>X
data[k] = temp[j--]; Q*J8`J:#^R
b = temp[j]; ~5Cid)Q}@o
} :p@.aD5
} &Oih#I
} VoTnm
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/** Hido[
* @param data 1YrIcovi-
* @param l v,VCbmc
* @param i $xK2M
*/ 'fGB#uBt
private void insertSort(int[] data, int start, int len) { $gv3Up"U
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7`c\~_Df_
} y|7sh
} ~.*G%TW &V
} .a0]1IkatV
} $k,wA8OZ-
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堆排序: Q,f~7IVX
b-+~D9U<
package org.rut.util.algorithm.support; 0S%xm'|N
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import org.rut.util.algorithm.SortUtil; nN]GO}
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/** w I7iE4\vz
* @author treeroot l[AQyR1+/
* @since 2006-2-2 KS3>c7
* @version 1.0 \Xr
Sn_p-
*/ I+4#LR3;
public class HeapSort implements SortUtil.Sort{ =G9 9U/
U_8 Z&
/* (non-Javadoc) fVXZfq6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6`
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*/ bl8EzO
public void sort(int[] data) { 0,z3A>C
MaxHeap h=new MaxHeap(); dx&!RK+
h.init(data); ye-EJDZN
for(int i=0;i h.remove(); (T9Q6\sa
System.arraycopy(h.queue,1,data,0,data.length); hT0[O
} <*/IV<
%wDE+&M
private static class MaxHeap{ >STAPrBp+
zarxv|
}$
void init(int[] data){ BWWO=N
this.queue=new int[data.length+1]; P5K=S.g
for(int i=0;i queue[++size]=data; +}.~"
fixUp(size); vR)f'+_Nz
} s<XAH7?0
} J_|LGrt})
F+m%PVW:
private int size=0; 2YbI."ob
D"z3SLFW{
private int[] queue; O)jpnNz
A5\00O~
public int get() { X9-WU\?UC
return queue[1]; nqFJNK]a
} %tvP\(]h
cS2PrsUx
public void remove() { 4m:D8&D_M
SortUtil.swap(queue,1,size--); ^7Hwpn7E
fixDown(1); C$+z1z.!
} VL?sfG0
file://fixdown Mjon++>Z
private void fixDown(int k) { wwuM!Z+
int j; <3)k M&.B
while ((j = k << 1) <= size) { sP'U9l
if (j < size %26amp;%26amp; queue[j] j++; Sk6B>O <:
if (queue[k]>queue[j]) file://不用交换 fFNscY<4w
break; X 3dXRDB'
SortUtil.swap(queue,j,k); 9zL(PkC%\
k = j; V'q?+p]
a
} _u{z$;
} 3T= ?!|e
private void fixUp(int k) { ;(3!#4`q(]
while (k > 1) { )z^NJ'v4(
int j = k >> 1; lZr}F.7
if (queue[j]>queue[k]) w!eY)p<
break; hE;|VSdo
SortUtil.swap(queue,j,k); cp)BPg
k = j; */6lyODf
} TFAd
} +e87/\5
4aGVIQ
} $VxKv7:
GiK4LJ~cH)
} \V_Tc`
hjgB[
&U>
SortUtil:
W<@9ndvH
ib\_MNIb
package org.rut.util.algorithm; \:m1{+l
KPrH1 [VU
import org.rut.util.algorithm.support.BubbleSort; _qO'(DKylC
import org.rut.util.algorithm.support.HeapSort; `6:B0-r
import org.rut.util.algorithm.support.ImprovedMergeSort; qI%X/'
import org.rut.util.algorithm.support.ImprovedQuickSort; Z_h-5VU-
import org.rut.util.algorithm.support.InsertSort; j2RdBoCt
import org.rut.util.algorithm.support.MergeSort; }ip3d m
import org.rut.util.algorithm.support.QuickSort; 0g`$Dap
import org.rut.util.algorithm.support.SelectionSort; p>l:^-N;f
import org.rut.util.algorithm.support.ShellSort; I'E7mb<2
{ew;
/;
/** 4o<rj4G>
* @author treeroot N`HiNb
[
* @since 2006-2-2 [0n[ \&
0
* @version 1.0 jcbq#
*/ F;L8FL-
public class SortUtil { 5~[m]
public final static int INSERT = 1; Fy$f`w_H@
public final static int BUBBLE = 2; 2oo/KndU
public final static int SELECTION = 3; `tPVNO,l
public final static int SHELL = 4; 6Qk[TL)t
public final static int QUICK = 5; [Qqomm.[\w
public final static int IMPROVED_QUICK = 6; 6E-AfY'<
public final static int MERGE = 7; RuGG3"|
public final static int IMPROVED_MERGE = 8; fgoLN\
public final static int HEAP = 9; 6]sP"
WS ^,@>A
public static void sort(int[] data) { f.Y [2b
sort(data, IMPROVED_QUICK); T jE'X2/
} !$hi:3{U,
private static String[] name={ I<rT\':9
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )~ 0TGy|
}; 82M`sk3.
U0;pl2
private static Sort[] impl=new Sort[]{ VTa%
new InsertSort(), ^D76_'{
new BubbleSort(), GO)5R,
new SelectionSort(), tE#;$Ss
new ShellSort(), i IM\_<?
new QuickSort(), KL yI*`
new ImprovedQuickSort(), Fs3
:NH
new MergeSort(), w>o/)TTJL
new ImprovedMergeSort(), E)`:sSd9
new HeapSort() }P'c8$
}; ,`bmue5
klR\7+lK
public static String toString(int algorithm){ .1+I8qj
return name[algorithm-1]; v5\5:b{/
} V}Ee1C
6f:u AFwG
public static void sort(int[] data, int algorithm) { );zLgNx,
impl[algorithm-1].sort(data); !z1\#|>
} nb.|^O?
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public static interface Sort { unih"};ou
public void sort(int[] data); $^_6,uBM[
} .e5d#gE0
_= cU2
public static void swap(int[] data, int i, int j) { jV[;e15+
int temp = data; 8iTB
data = data[j]; xnfJruT
data[j] = temp; 4f&"1:
} ? G`6}NP
} )$ h!lAo