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。 M/.M~/~
插入排序: xa'U_]m
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package org.rut.util.algorithm.support; fgL"\d}
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import org.rut.util.algorithm.SortUtil; xV+\R/)x
/** ?K pDEH~\
* @author treeroot 46)[F0,$r
* @since 2006-2-2 C TG^lms
* @version 1.0 ;0kAm
Vy
*/ V*s\ ~h)
public class InsertSort implements SortUtil.Sort{ #FAW@6QG
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/* (non-Javadoc) (Q||5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d!T,fz/-.
*/ %K3U`6kHcd
public void sort(int[] data) { v7@"9Uw}
int temp; 5|eX@?QF58
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3,G|oR{D
} yw+]S
} m[y~-n
} .{ILeG
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} |=:@<0.'
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冒泡排序: ZhCz]z~tj6
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package org.rut.util.algorithm.support; mIG>`7`7N
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import org.rut.util.algorithm.SortUtil; r]xN&Ne5Q
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/** V+1c<LwT
* @author treeroot r0k:RJP
* @since 2006-2-2 x1wD`r
* @version 1.0 q7aqbkwz}
*/ WLU_t65
public class BubbleSort implements SortUtil.Sort{ "wV
3)>re&
/* (non-Javadoc) LEnv/t6U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y'2w*?
*/ sV5k@1Y
public void sort(int[] data) { [V?HK_~
int temp; 9.dZA9l@g
for(int i=0;i for(int j=data.length-1;j>i;j--){ a>4q"IT6
if(data[j] SortUtil.swap(data,j,j-1); ,V]FAIJ
} z"7?I$NQ
} 2Q(ZW@0
} :n~Mg{j3
} l<=k#d
N4VZl[7?
} }T}c%p
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选择排序: o-_,l
J7o^
*$VeR(QN
package org.rut.util.algorithm.support; _+)OL-
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import org.rut.util.algorithm.SortUtil; })@xWU6!
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/** <<qzZ+u
* @author treeroot [8tpU&J
* @since 2006-2-2 o\W>$$EXD
* @version 1.0 R3_;!/1
*/ _]'kw [
public class SelectionSort implements SortUtil.Sort { U<XfO'XJ
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/* U"@p3$2QW
* (non-Javadoc) En-=z`j
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* VrT-6r'Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (]mBAQ#hw
*/ $ta"Ug.z
public void sort(int[] data) { h-Ks:pcR
int temp; wH=7pS"s
for (int i = 0; i < data.length; i++) { b?Q$UMAbH
int lowIndex = i; h
Ks
for (int j = data.length - 1; j > i; j--) { Wn;%B].I
if (data[j] < data[lowIndex]) { rFC9y o
lowIndex = j; V0,5c`H c
} {Gfsiz6
} ;H%'K
SortUtil.swap(data,i,lowIndex); F@t\D?
} "3 2Ua3m:G
} KTo}xLT
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} qS}{O0
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Shell排序: :&$v.#
&BKnJ{,H
package org.rut.util.algorithm.support; U[yA`7Zs}
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import org.rut.util.algorithm.SortUtil; c2GTN "
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/** ^N ;TCn
* @author treeroot th"Aatmp
* @since 2006-2-2 kp?_ir
* @version 1.0 o"N\l{ #s
*/ o4rf[.z
public class ShellSort implements SortUtil.Sort{ bTYR=^9
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i[33u p
*/ Mp5Z=2l5
public void sort(int[] data) { { }Afah
for(int i=data.length/2;i>2;i/=2){ ed/
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for(int j=0;j insertSort(data,j,i); )WEOqaR]
} T9}dgf
} |l|$Q;
insertSort(data,0,1); ow,! 7|m
} Y.52`s6F
w1F)R^tU
/** c2gZ<[~
* @param data .ArOZ{lKD>
* @param j /^si(BuC^*
* @param i 0yUn~'+(Sp
*/ rP(;^8l"
private void insertSort(int[] data, int start, int inc) { 6lr<{k7Nw
int temp; 6: R1jF*eG
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^#h ;bX#
} Fkqw#s(T
} Aba%QQQ
} yi-)4#YN
"[_gRe*2
} !a%_A^t7
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快速排序: )ZZ6 (O
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package org.rut.util.algorithm.support; gZz5P>^
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import org.rut.util.algorithm.SortUtil; x f:|lQf
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/** EUPc+D3
* @author treeroot e/)Vx'd`+
* @since 2006-2-2 T%TO?[cN
* @version 1.0 oSR;Im<2
*/ sw(|EZ7F
public class QuickSort implements SortUtil.Sort{ c/-'^+9
r/+~4W5
/* (non-Javadoc) (
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /dR:\ffz2
*/ a8y*Jz-E
public void sort(int[] data) { i Hcy,PBD
quickSort(data,0,data.length-1); 5cr\ JR
} 1R.6Xer
private void quickSort(int[] data,int i,int j){ @zsqjm
int pivotIndex=(i+j)/2; F'@[b
file://swap }f6_7W%5
SortUtil.swap(data,pivotIndex,j); *@ S+J$
2) Q/cH\g
int k=partition(data,i-1,j,data[j]); Qyj:!-o
SortUtil.swap(data,k,j); 0bQ"s*K
if((k-i)>1) quickSort(data,i,k-1); @7?L+.r$9
if((j-k)>1) quickSort(data,k+1,j); nG|
NRp
%F0.TR!!n
} ge&!GO
/** v?q)E%5j
* @param data p"Di;3!y!
* @param i f F9=zrW
* @param j Is (
Ji
* @return ^"J)^3j<
*/ :RX zqC
private int partition(int[] data, int l, int r,int pivot) { ?[X^'zz}
do{ w[;5]z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); VF:<q
SortUtil.swap(data,l,r); F{m?:A
} H|d"45J_
while(l SortUtil.swap(data,l,r); OJ#
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return l; 1|7tq
} )3!z2f: e
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} =%crSuP
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改进后的快速排序: S1*xM
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package org.rut.util.algorithm.support; [jKhC<t}
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import org.rut.util.algorithm.SortUtil; !ac,qj7spa
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/** /o nZ14
* @author treeroot mv`ND&
* @since 2006-2-2 /Nd`eUn
* @version 1.0 JHsxaX;c
*/ zW ; sr.
public class ImprovedQuickSort implements SortUtil.Sort { 2Ni {fC?
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private static int MAX_STACK_SIZE=4096; &>Nw>V
private static int THRESHOLD=10; kfs[*ku
/* (non-Javadoc) Uj)`(}r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zhC5%R &n/
*/ SGLU7*sfd
public void sort(int[] data) { ,D{D
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int[] stack=new int[MAX_STACK_SIZE]; -j}zr yG-
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int top=-1; Ob
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int pivot; 3TnrPO1E
int pivotIndex,l,r; o;{BI
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stack[++top]=0; z7]GZF
stack[++top]=data.length-1; /baSAoh/e
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while(top>0){ ~:"//%M3l
int j=stack[top--]; KyRcZ"
int i=stack[top--]; /qPhptV
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pivotIndex=(i+j)/2; nW_cjYS%
pivot=data[pivotIndex]; \2y[Hy?
LVBE+{P\5?
SortUtil.swap(data,pivotIndex,j); )SWLX\b
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file://partition 8/ PS#dM\
l=i-1; JR4fJG
r=j; :z%q09.)
do{ %1kIaYZ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <2fgao&-n
SortUtil.swap(data,l,r); 7NQEn Al
} a/lTQj]A
while(l SortUtil.swap(data,l,r); %bgUU|CdA
SortUtil.swap(data,l,j); Kr@6m80E5
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if((l-i)>THRESHOLD){ 7E\k97#G
stack[++top]=i; 2X@" #wIg
stack[++top]=l-1; Hie
} ?!$:I8T
if((j-l)>THRESHOLD){ }9 I,p$
stack[++top]=l+1; o9c?)KQ
stack[++top]=j; G9r~O#=gy
} d&t,^Hj
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@
} k[]2S8K2
file://new InsertSort().sort(data); ix_&<?8
insertSort(data); ~qezr\$2
} CjUYwAy$k
/** Yp;?Zq9
* @param data J42/S [Rt
*/ Apc!!*7
private void insertSort(int[] data) { . MH;u3U
int temp; )i$KrN6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ({WV<T&
} 4~z-&>%
} H[U"eS."
} NWII?X#T}
F4=V*/7
} >|g(/@IO
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归并排序: 7&vDx=W
:r}C&3
package org.rut.util.algorithm.support; )H[Pz.'ah0
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import org.rut.util.algorithm.SortUtil; @*-t.b2k
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/** aQglA
* @author treeroot s-JS[
* @since 2006-2-2 lHc9D
* @version 1.0 yUEvva
*/ nXfdf-
public class MergeSort implements SortUtil.Sort{ -Rbv#Y
*b\&R%6dR
/* (non-Javadoc) z2[{3Kd*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cSYMnB
*/ 5N:IH@
public void sort(int[] data) { tYCVVs`?
int[] temp=new int[data.length]; #i=k-FA)H
mergeSort(data,temp,0,data.length-1); ;2l|0:
} eR:C?v
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private void mergeSort(int[] data,int[] temp,int l,int r){ )w,<XJhg`
int mid=(l+r)/2; p;.M.
if(l==r) return ; :?SD#Vvrh.
mergeSort(data,temp,l,mid); !TLJk]7uC
mergeSort(data,temp,mid+1,r); )F,z pGG
for(int i=l;i<=r;i++){ cr ~.],$Om
temp=data; U[W &D%'
} dK>sHUu
int i1=l; v:]z-zU
int i2=mid+1; S9dXkd
for(int cur=l;cur<=r;cur++){ KRb'kW
if(i1==mid+1) q@vqhE4
data[cur]=temp[i2++]; jR>`Xz
else if(i2>r) #M@~8dAH}M
data[cur]=temp[i1++]; 5Kw?#
else if(temp[i1] data[cur]=temp[i1++]; i7%`}t
else B0D
data[cur]=temp[i2++]; jGe%'AN\
} ]D[\l$(
} T}59m;I
"w3%BbI x
} ]EqwDw4
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改进后的归并排序: ;2[),k
o2!wz8
package org.rut.util.algorithm.support; 6o4Y]C2W{1
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import org.rut.util.algorithm.SortUtil; DGNn#DP
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/** zJov*^T-C
* @author treeroot yX/{eX5dr
* @since 2006-2-2 $N\k*=
* @version 1.0 8&yI1XM|
*/ UT0}Ce>e
public class ImprovedMergeSort implements SortUtil.Sort { GI6]Ecc
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private static final int THRESHOLD = 10; 5&qBG@Hw]
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/* ehTv@2b
* (non-Javadoc) D!&]jkUN
* F ESl#.}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uo;a$sR
*/ DMlr%)@{
public void sort(int[] data) { Vllxv6/_
int[] temp=new int[data.length]; Zxh<pd25Y
mergeSort(data,temp,0,data.length-1); %F\.1\&eE
} 7[I +1
JJ9R,
8n6
private void mergeSort(int[] data, int[] temp, int l, int r) { opTH6a
int i, j, k; WjOP2CVv|
int mid = (l + r) / 2; $$i
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if (l == r) #n]K$k>
return; oxL)Jx\c9A
if ((mid - l) >= THRESHOLD) [}yPy))A
mergeSort(data, temp, l, mid); c#TV2@
else U9jdb9 |
insertSort(data, l, mid - l + 1); {.ypZ8JU
if ((r - mid) > THRESHOLD) (__$YQ-
mergeSort(data, temp, mid + 1, r); {vdY(
else \&47u1B
insertSort(data, mid + 1, r - mid); WtO@Kf:3GH
d:"7Tw2v+
for (i = l; i <= mid; i++) { yhrjML2K
temp = data; HuR774f[
} M4(57b[`
for (j = 1; j <= r - mid; j++) { (I/iD.A
temp[r - j + 1] = data[j + mid]; ]-_ ma
} "z*.Bk
int a = temp[l]; ?TJ4L/"(k6
int b = temp[r]; sDAP'&
for (i = l, j = r, k = l; k <= r; k++) { E1SWZ&';
if (a < b) { *W;;L_V"
data[k] = temp[i++]; &j,#5f(
a = temp; cg_ " }]Y1
} else { d"L(eI}G
data[k] = temp[j--]; Kg`P@
b = temp[j]; X,bhX/h
} Lp/'-Y_
} !{ fu(E
} c\/-*OYr<
AN3oh1xe:
/** z?pi/`y8>
* @param data 8 Vf#t!t
* @param l
i[I&m]N
* @param i %a
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*/ P^!g0K
private void insertSort(int[] data, int start, int len) { JI
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Jg)( F|>o
} $@O?
} eK5~YM:o
} ug.|ag'R
} |P`b"x
^VW]Qr!
堆排序: Bh'!aip k
&xA>(|a\&-
package org.rut.util.algorithm.support; vxOnv8(
9yaTDxB>
import org.rut.util.algorithm.SortUtil; J%n#uUs
]#W7-Q;]
/** $2+s3)
* @author treeroot fDqDU
* @since 2006-2-2 HEAW](s
* @version 1.0 %8wBZ~1-
*/ $-u c#57
public class HeapSort implements SortUtil.Sort{ :,M+njcFc
w,up`W7,
/* (non-Javadoc) (P;TM1k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K^o{lyK;@~
*/ (EvYrm4
public void sort(int[] data) { bI|{TKKN&P
MaxHeap h=new MaxHeap(); *JfGGI_E
h.init(data); L>mM6$l
for(int i=0;i h.remove(); v9FR
System.arraycopy(h.queue,1,data,0,data.length); ,]nRnI^
} ''D7Bat@
."gq[0_YS
private static class MaxHeap{ j}d):3!
mZc; n.$U
void init(int[] data){ _|W&tB*
this.queue=new int[data.length+1]; ?i V}U
for(int i=0;i queue[++size]=data; m mZP;
fixUp(size); h Ypj
} k=mLcP
} L)&^Pu
Z,/^lg c,
private int size=0; l1|*(%p?X
q'a]DJ`
private int[] queue; cMF)2^w}
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public int get() { xQU//kNL
return queue[1]; H }]Zp
} H C,5j)1
1h(IrV5 g
public void remove() { oV;sd5'LG
SortUtil.swap(queue,1,size--); j`q>YPp
fixDown(1); DU8\1(
} .ahY 1CO
file://fixdown >N 2kWSa
private void fixDown(int k) { ^;h\#S[%
int j; :\'1x
while ((j = k << 1) <= size) { 5z9hcQAS
if (j < size %26amp;%26amp; queue[j] j++; p`rjWpH
if (queue[k]>queue[j]) file://不用交换 U,7
break; )Ute
SortUtil.swap(queue,j,k); wr:W}Z@pL
k = j; ("ix!\1K@
} 38m9t'
} qoH:_o8ClO
private void fixUp(int k) { {5D%<Te
while (k > 1) { aMGh$\Pg
int j = k >> 1; fa,:d8
if (queue[j]>queue[k]) ,jeHL@>w[
break; SP<Sv8Okj
SortUtil.swap(queue,j,k); \m}a%/
k = j; <}A6 )=T
} N\&VJc
} v;5-1
Q]GS#n
} ks("(
nU
5de1r B|
} =liyd74%`
/m;Bwu
SortUtil: A^+k A)8
h*D -Vo
package org.rut.util.algorithm; v;G/8>GRy
;<[!;8
import org.rut.util.algorithm.support.BubbleSort; /DH`7E
import org.rut.util.algorithm.support.HeapSort; &&52ji<3
import org.rut.util.algorithm.support.ImprovedMergeSort; h$$JXf
import org.rut.util.algorithm.support.ImprovedQuickSort; R[6R)#o
import org.rut.util.algorithm.support.InsertSort; 'YGP42#
import org.rut.util.algorithm.support.MergeSort; 7VZ ^J`3
import org.rut.util.algorithm.support.QuickSort; Z.Z31yF:f
import org.rut.util.algorithm.support.SelectionSort; +mD;\iW]
import org.rut.util.algorithm.support.ShellSort; :|S[i('
E$4H;SN \
/** B8T5?bl
* @author treeroot EXjR&"R
* @since 2006-2-2 5wh(Qdib
* @version 1.0 yx&}bu\
*/ 87 B$
public class SortUtil { .@+M6K*
public final static int INSERT = 1; `L <sZ;Cj
public final static int BUBBLE = 2; .t>SbGC
public final static int SELECTION = 3; +h/OQ]`/m
public final static int SHELL = 4; Ksh[I,+N\
public final static int QUICK = 5; tj00xYY
public final static int IMPROVED_QUICK = 6; 5uSg]2:
public final static int MERGE = 7; Gs|a$^V|o
public final static int IMPROVED_MERGE = 8; %
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public final static int HEAP = 9; ]e5aHpgR=
~H?v L c;>
public static void sort(int[] data) { #P z'-lo
sort(data, IMPROVED_QUICK); CE
} muF&t'k
private static String[] name={ ow
6\j:$?
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dc~vQDNw[X
}; K%BFR,)g
^/Yk*Ny
private static Sort[] impl=new Sort[]{ ^t<L
new InsertSort(), rfQs
7S;G
new BubbleSort(), Sh-B!
new SelectionSort(), Z ]ZUK
new ShellSort(), ^-s7>F`jx
new QuickSort(), AVU'rsXA
new ImprovedQuickSort(), rk&oKd_&i
new MergeSort(), pX>wMc+
new ImprovedMergeSort(), Ekrpg^3qp"
new HeapSort() W^ask[46R
}; o](ORS$~
!IC
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public static String toString(int algorithm){ %jq
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return name[algorithm-1]; [a$1{[|)
} xOg|<Nnl
*kF/yN
public static void sort(int[] data, int algorithm) { i>G:*?a
impl[algorithm-1].sort(data); rk,64(
} V_v+i c^
wod{C !
public static interface Sort { ~
W8
M3(^
public void sort(int[] data); gGA5xkA
} 6rG7/
U:MZN[Cc[
public static void swap(int[] data, int i, int j) { TQ/#
int temp = data; wT;;B=u}G
data = data[j]; ]k1N-/
data[j] = temp; d3T7$'l$
} 9S'\&mRl
} #&S<{75A