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。 2%@4]
插入排序: wb5baY9
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package org.rut.util.algorithm.support; OSWYGnZg
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import org.rut.util.algorithm.SortUtil; M!A}NWF
/** %.Fi4}+O
* @author treeroot i,E{f
* @since 2006-2-2 wQH<gJE/:
* @version 1.0 rc>4vB_ha
*/ K>r,(zgVc
public class InsertSort implements SortUtil.Sort{ @6F#rz
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/* (non-Javadoc) zH4D 8@[7O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "9P>a=Y
*/ \y)rt )
public void sort(int[] data) { AOWmzu{zw
int temp; |\<`Ib4j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v/0QOp
} lhz{1P]s
} qL&[K>2z
} }Jve cRtg1
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} ox>^>wR*
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冒泡排序: ^aMg/.j
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package org.rut.util.algorithm.support; YX7L?=;.@
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import org.rut.util.algorithm.SortUtil; C'+YQ]u
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/** WJndoB.f[2
* @author treeroot q J=~Y|(
* @since 2006-2-2 pV
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* @version 1.0 w%VU/6~
*/ `d
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public class BubbleSort implements SortUtil.Sort{ YTX,cj#D^&
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/* (non-Javadoc) ./k/KSR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @ ZwvBH
*/ =wHVsdNCN
public void sort(int[] data) { Zq|I,l0+E
int temp; w d^':
for(int i=0;i for(int j=data.length-1;j>i;j--){ eV"h0_ox
if(data[j] SortUtil.swap(data,j,j-1); VT%NO'0
} )uIe&B
} ?)?Ng}
} ;|5F[
} zh`<WN&H
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} /y#f3r+*2
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选择排序: y$F'(b|)
gX}8#O.K$
package org.rut.util.algorithm.support; Ae^~Cz1qz
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import org.rut.util.algorithm.SortUtil; t r3!d_
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/** %lx!.G
* @author treeroot @* jz
o
* @since 2006-2-2 i2U{GV<K-r
* @version 1.0 He/8=$c%
*/ +I:Unp
public class SelectionSort implements SortUtil.Sort { };bEU wGWf
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/* R'`qKc
* (non-Javadoc) z'U1bMg
* "f2$w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p* (JjH
*/ Lpz>>}
public void sort(int[] data) { c|B('3h
int temp; 18d4fR
for (int i = 0; i < data.length; i++) { 4 Y9`IgQ
int lowIndex = i; #u(^0'
P
for (int j = data.length - 1; j > i; j--) { ]G=L=D^cK
if (data[j] < data[lowIndex]) { W$;,CU.v
lowIndex = j;
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} m6K}|j
} 6NuD4Ga
SortUtil.swap(data,i,lowIndex); _LUhZlw
} K.nHii
} ,RI Gc US
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} I-)+bV
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Shell排序: m@F`!qY~Y\
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package org.rut.util.algorithm.support; x8\?}UnB
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9A
import org.rut.util.algorithm.SortUtil; Jr!JHC9i
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/** >d*@_kJM
* @author treeroot !bx;Ta.
* @since 2006-2-2 )Y0!~#
`
* @version 1.0 (ejvF):|
*/ &|ex`nwc0
public class ShellSort implements SortUtil.Sort{ y0.'?6k
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/* (non-Javadoc) ,vawzq[oSy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0[#
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*/ Z'W=\rl
public void sort(int[] data) { "1*:JVG
for(int i=data.length/2;i>2;i/=2){ o]_dJB
for(int j=0;j insertSort(data,j,i); vjCu4+w($Z
}
3E]plj7$
} ^4hO
insertSort(data,0,1); 1~`fVg
} `pS9_NYZ}
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/** 9c'xHO`
* @param data DGF5CK.O
* @param j CL;}IBd a
* @param i glxsa8
*/ ~2N"#b&J
private void insertSort(int[] data, int start, int inc) { J#(LlCs?@c
int temp; D&
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }W8;=$jr
} 9uO 2Mm
} c )g\/
} RnE4<Cy
w<3#1/g!2B
} >J?fl8
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快速排序: 6]N;r5n
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package org.rut.util.algorithm.support; >dD@j:Qc
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import org.rut.util.algorithm.SortUtil; 70nqD>M4
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/** X-Kh(Z
* @author treeroot 2(+2+}
* @since 2006-2-2 q`a'gJx#y
* @version 1.0 "|
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*/ @%uUiP0
public class QuickSort implements SortUtil.Sort{ At>DjKx]O
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/* (non-Javadoc) 6l1jMm|=
X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g2ixx+`?|:
*/ Y('#jU
public void sort(int[] data) { hH3RP{'=
quickSort(data,0,data.length-1); {9pZ)tB
} L}b.ulkMD
private void quickSort(int[] data,int i,int j){ UHkMn
int pivotIndex=(i+j)/2; ! E5HN :#
file://swap Vwf$JdK%&l
SortUtil.swap(data,pivotIndex,j); 3M7/?TMw{6
Tv=mgH=b
int k=partition(data,i-1,j,data[j]); uyWunpT
SortUtil.swap(data,k,j); 2- h{N
if((k-i)>1) quickSort(data,i,k-1); qgHWUwr+n
if((j-k)>1) quickSort(data,k+1,j); AKfDXy
>\#*P'y`d
} Eyqa?$R
/** C2I_%nU Z1
* @param data p%Vt#?q
* @param i &`r-.&Y
* @param j -3*]G^y2
* @return mdg8,n
*/ k%#EEMh
private int partition(int[] data, int l, int r,int pivot) { rJ4S%6w
do{ FVbb2Y?R
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ECuH%b^,
SortUtil.swap(data,l,r); %)1?TU
} M
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while(l SortUtil.swap(data,l,r); [l??A3G
return l; H$t_Xw==
} &PHTpkaam
-@2iaQ(5a2
}
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改进后的快速排序: +@f26O7$*
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package org.rut.util.algorithm.support; /Cr%{'Pzk
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import org.rut.util.algorithm.SortUtil; o:'MpKm
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/** ec;o\erPG
* @author treeroot I$G['`XX/
* @since 2006-2-2 gz9j&W.
* @version 1.0 JPHL#sKyz
*/ +3BN}
public class ImprovedQuickSort implements SortUtil.Sort { ^[`%&uj!g
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private static int MAX_STACK_SIZE=4096; u
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private static int THRESHOLD=10; G~a ZJ,
/* (non-Javadoc) {}przrU^c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JXQO~zj
*/ RbnVL$c
public void sort(int[] data) { i&fuSk EP
int[] stack=new int[MAX_STACK_SIZE]; &6!)jIWJ
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int top=-1; vI>w e
int pivot; K5h
int pivotIndex,l,r; t=iIY`Md%
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stack[++top]=0; %wy.TN
stack[++top]=data.length-1; >]TWXmx/w
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while(top>0){ C{rcs'
int j=stack[top--]; $a]`nLUa
int i=stack[top--]; 2F.;;Ab
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pivotIndex=(i+j)/2; q?yVR3]M
pivot=data[pivotIndex]; H*R"ntI?w
Bsvr?|L\
SortUtil.swap(data,pivotIndex,j); IEi^kJflU
U7F!Z(
9
file://partition 90rol~M&
l=i-1; JH9J5%sp
r=j; LH% F8
do{ 0s[Hkhls
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CAhXQ7w'Z
SortUtil.swap(data,l,r); iYoMO["X
} 7JH6A'&
while(l SortUtil.swap(data,l,r); LEdh!</'24
SortUtil.swap(data,l,j); ZLejcYS
ouQ T
if((l-i)>THRESHOLD){ M6jy\<a
stack[++top]=i; ~36!?&eA8
stack[++top]=l-1; g3y~bf
} q|(HsLs
if((j-l)>THRESHOLD){ tyFzSrfc
stack[++top]=l+1; ;6$jf:2m
stack[++top]=j; KZE,bi:~
} rb.N~
$UWZDD
} 6bC3O4Rw
file://new InsertSort().sort(data); x 9fip-
insertSort(data);
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} -Q*gW2KmV
/** 5t]H?b8
* @param data Jnov<+
*/ d$!RZHo10V
private void insertSort(int[] data) { {EQOP]
int temp; g) jYFfGfH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~$^XP.a.
} }Sv:`9=
} Y$_B1_
} #\OA )`U
0GeTSFj
} usF.bkTp
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归并排序: #*Ctwl,T
3s#N2X;Bc
package org.rut.util.algorithm.support; y<Ot)fa$
~c `l@:
import org.rut.util.algorithm.SortUtil; 57c8xk[.2
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/** g($2Dk_F2
* @author treeroot Iefn$
* @since 2006-2-2 e\L8oOk#r
* @version 1.0 5rik7a)Z]
*/ ?e 4/p
public class MergeSort implements SortUtil.Sort{ 5\nAeP
7kEn \
/* (non-Javadoc) \4fQMG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9yP;@y*d
*/ 'H;*W |:-]
public void sort(int[] data) { iH@UTE ;
int[] temp=new int[data.length]; Avb\{)s+
mergeSort(data,temp,0,data.length-1); '`Hr}
}
x.$FNt(9
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private void mergeSort(int[] data,int[] temp,int l,int r){ +M/%+l
int mid=(l+r)/2; f@!.mDm]
if(l==r) return ; \9T7A&
mergeSort(data,temp,l,mid);
P*j|.63
mergeSort(data,temp,mid+1,r); 3Y$GsN4ln
for(int i=l;i<=r;i++){ #H~64/
temp=data; M\BRcz
} 0g8NHkM:2a
int i1=l; y:uE3Apm
int i2=mid+1; gB33?
for(int cur=l;cur<=r;cur++){ +NUG
if(i1==mid+1) X&H"51
data[cur]=temp[i2++]; eHUOU>&P]
else if(i2>r) K[YyBEid
data[cur]=temp[i1++]; f!X[c?Xy"
else if(temp[i1] data[cur]=temp[i1++]; !4+<<(B=E
else 1'Dai `
data[cur]=temp[i2++]; p!%pP}I
} G3T]`Atf
} -QNh
~k5W@`"W
} JxU5 fe
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改进后的归并排序:
[$UI8tV
t]G:L}AOl
package org.rut.util.algorithm.support; X:{!n({r=
@H8EWTZ
import org.rut.util.algorithm.SortUtil; seJ^s@H5l
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/** \ Cj7k^
* @author treeroot mt.))#1
* @since 2006-2-2 Y'X%Aw;`
* @version 1.0 HGg@ _9tW
*/ >H,*H;6
public class ImprovedMergeSort implements SortUtil.Sort { BiBOr}ZQ
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private static final int THRESHOLD = 10; _yR^*}xJb
e*1_ 8I#2
/* R4d=S4i
* (non-Javadoc) Tlr v={
* Xch~
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .=;
;
*/ `Pnoxm'
public void sort(int[] data) { ~gt@P
int[] temp=new int[data.length]; dj%!I:Q>u
mergeSort(data,temp,0,data.length-1); @C aG9]
} A3*!"3nU
%;!.n{X
private void mergeSort(int[] data, int[] temp, int l, int r) { TA~{1_l
int i, j, k; `Q,H|hp;k;
int mid = (l + r) / 2; *VN6cSq
if (l == r) a8Wwq?@
return; aw> #P
if ((mid - l) >= THRESHOLD) }Y4qS
mergeSort(data, temp, l, mid); 8q7b_Pq1U
else 3G4-^hY<
insertSort(data, l, mid - l + 1); c:.eGH_f
if ((r - mid) > THRESHOLD) ?Mfw]z"\C)
mergeSort(data, temp, mid + 1, r); |4`{]2C
else 93hxSRw
insertSort(data, mid + 1, r - mid); ,2ar7
5Va
1h5 Akq
for (i = l; i <= mid; i++) { C7AUsYM
temp = data; }(u
ol
} 9N3eN
for (j = 1; j <= r - mid; j++) { gQ.Sa
j
$
temp[r - j + 1] = data[j + mid]; FVBYo%Ap
} x,V r=FB
int a = temp[l]; kU`r)=1"
int b = temp[r]; 2J;g{95z
for (i = l, j = r, k = l; k <= r; k++) { U
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if (a < b) { P0b7S'a4!
data[k] = temp[i++]; $ME)#(
a = temp; !|>"o7
} else { 0m ? )ROaJ
data[k] = temp[j--]; ~Cjn7
b = temp[j]; a[TMDU;(/4
} T[j,UkgGo
} ml$o5&sN
} k VQ\1!
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/** vfo~27T{(
* @param data rVsJ`+L
* @param l Af{"pzY
* @param i KK &?gTa
*/ 0ZO2#>gh$
private void insertSort(int[] data, int start, int len) { @=kSo
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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); `P ,d$H "
} PFK
'$
} |^H5^k "Bv
} ;*&-C9b
} Wv/=O}
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堆排序: >F&47Yn
Sa5G.^XI
package org.rut.util.algorithm.support; )\^-2[;
pD]OT-8
import org.rut.util.algorithm.SortUtil; X\F|Tk3_
5/z/>D;
/** =nHgDrA_
* @author treeroot `y* }lg T
* @since 2006-2-2 t&DEb_"De
* @version 1.0 jF*j0PkNdb
*/ 29q _BR *:
public class HeapSort implements SortUtil.Sort{ ~F7gP{r
iG?[<1~
/* (non-Javadoc) C"enpc_C/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3oG,E;(
*/ >yh2Lri
public void sort(int[] data) { tklH@'q
MaxHeap h=new MaxHeap(); \D&KC,i5f
h.init(data); /H+a0`/
for(int i=0;i h.remove(); 7v_8_K
System.arraycopy(h.queue,1,data,0,data.length); M&
CqSd
} \5cpFj5%
n{SJ_S#a.a
private static class MaxHeap{ ;6hOx(>`=
Dn }Jxu'(
void init(int[] data){ 2dgd~
this.queue=new int[data.length+1]; !5?<% *
for(int i=0;i queue[++size]=data; =E{`^IT'R
fixUp(size); da~],MN
} 3{(/x1a,4
} &Y eA:i?
NW)1#]gg%
private int size=0; gv{ >`AN
j1HW._G
private int[] queue; /|#fejPh
W|(1Y
D
public int get() { Vs{|xG7WD
return queue[1]; e(8Ba X_
} /JU.?M35
Oz#{S:24M+
public void remove() { d*Fj3Wkx
SortUtil.swap(queue,1,size--); Q)z8PQl O
fixDown(1); sFTy(A/
} xi;`ecqS<
file://fixdown RY*U"G0#w
private void fixDown(int k) { 5i{j' {_(8
int j; EDs\,f}
while ((j = k << 1) <= size) { _t}WsEQ+P
if (j < size %26amp;%26amp; queue[j] j++; B48={
if (queue[k]>queue[j]) file://不用交换 $
o#V#
break; 8SS|a
SortUtil.swap(queue,j,k); h3@v+Z<}
k = j; HiJE}V;Vq
} $7A8/#
} 7i1q wRv
private void fixUp(int k) { J!7MZLb
while (k > 1) { |IUWF%~^$+
int j = k >> 1; U|j`e5)
if (queue[j]>queue[k]) "8zDbdK
break; 5.J.RE"M
SortUtil.swap(queue,j,k); w^0nqh
k = j; K,:N
} 63x?MY6
} '>C5-R:O
iMRwp+$
} Ok\7y-w^
[;myHI`tw
} Nu~lsWyRI5
0S$N05
SortUtil: =zs`#-^8
]L}dzA?:
package org.rut.util.algorithm; j^2j&Ta
v1,oilL
import org.rut.util.algorithm.support.BubbleSort; gr-OHeid
import org.rut.util.algorithm.support.HeapSort; @49S`
import org.rut.util.algorithm.support.ImprovedMergeSort; 0Pi:N{x8
import org.rut.util.algorithm.support.ImprovedQuickSort; &~U ] ~;@
import org.rut.util.algorithm.support.InsertSort; .Rf_Cl
import org.rut.util.algorithm.support.MergeSort; "`1bA"E
import org.rut.util.algorithm.support.QuickSort; }?v )N).kW
import org.rut.util.algorithm.support.SelectionSort; Z>#i**
import org.rut.util.algorithm.support.ShellSort; 2Q:+_v
m/EFHS49
/** 4#hSJ(~7S
* @author treeroot cDkf qcC
* @since 2006-2-2 dzrio-QU~
* @version 1.0 r^ ZEImjc
*/ D=&Me=$
public class SortUtil { K8Y=S12Ti
public final static int INSERT = 1; mBON$sF|
public final static int BUBBLE = 2; b<gr@ WF
public final static int SELECTION = 3; >!)DM]Ri
public final static int SHELL = 4; Jma1N;d
public final static int QUICK = 5; P\)iZiGc
public final static int IMPROVED_QUICK = 6; l_%6
public final static int MERGE = 7; g_COp"!~9
public final static int IMPROVED_MERGE = 8; }txX;"/
public final static int HEAP = 9; Aj]V`B:65
FH+s s!
public static void sort(int[] data) { \v)+.m?n
sort(data, IMPROVED_QUICK); gCY';\f!
} v0jgki4t
private static String[] name={ ]
{HI?V
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" kt$jm)UI~l
}; XACm[NY_
]- QA'Lq
private static Sort[] impl=new Sort[]{ ,:\|7 F
new InsertSort(), TT3|/zwn
new BubbleSort(), G+|` 2an
new SelectionSort(), y7Df_|Z
new ShellSort(), fkNbS
new QuickSort(), KRDmY+
new ImprovedQuickSort(), m$T-s|SY
new MergeSort(), &H:(z4/
new ImprovedMergeSort(), 3n}?bY8@5_
new HeapSort() Bh]P{H%
}; '$zIbQ:
RQu(Wu|m.
public static String toString(int algorithm){ $[=%R`~w
return name[algorithm-1]; J!U}iD@occ
} S\!ana])
!H>R%g#28_
public static void sort(int[] data, int algorithm) { M?uC%x+S$_
impl[algorithm-1].sort(data); xAMW-eF?d
} AX/m25x
w!clI8v/
public static interface Sort { ZSd4z:/
public void sort(int[] data); Pce;r*9
} ,^f+^^
$aXer:
public static void swap(int[] data, int i, int j) { U2s /2 [.
int temp = data; Dy8r 9
data = data[j]; }s<4{:cv+
data[j] = temp; :T
!'N\7
} L AAHEv
} oj_3ZsO