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。 t@dv$W2
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插入排序: (Q~ p"Ch
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package org.rut.util.algorithm.support; >S\D+1PV
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import org.rut.util.algorithm.SortUtil; %dA6vHI,
/** h8# 14?
* @author treeroot ft$@':F
* @since 2006-2-2 'a8{YT4
* @version 1.0 );X&J:-l+
*/ -L=aZPW`M
public class InsertSort implements SortUtil.Sort{ >9F&x>~
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/* (non-Javadoc) ;jC}.]
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4O}ZnE1[
*/ 3^NHVg
public void sort(int[] data) { BC|=-^(
int temp; h+ixl#:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x93t.5E6
} yb{ud
} 1nHQ)od
} BllS3I}V
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} iKs @oHW
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冒泡排序: AP1Eiv<Hub
"'Bx<FA
package org.rut.util.algorithm.support; (t$jb|Oa
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import org.rut.util.algorithm.SortUtil; xLID@9Hbu
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/** |]s/NNU
* @author treeroot 9eG{"0)
* @since 2006-2-2 AunX[X9
* @version 1.0 #m
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*/ S.G"*'N
public class BubbleSort implements SortUtil.Sort{ _Z9HOl@
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/* (non-Javadoc) B{x`^3qR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OQl7#`G!H%
*/ LBO3){=J
public void sort(int[] data) { cOz8YVR-
int temp; yDmNPk/
for(int i=0;i for(int j=data.length-1;j>i;j--){ W@"s~I6
if(data[j] SortUtil.swap(data,j,j-1); Fog4m=b`g
} "gaurr3
} $hND!T+;
} 'IVNqfC)u
} u`K)dH,
"}"hQ.kAz
} [w>T.b
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选择排序: OPi><8x
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package org.rut.util.algorithm.support; }q8|t3
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import org.rut.util.algorithm.SortUtil; x?5D>M/Y
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/** Vr%>'XN>"
* @author treeroot hDPZj#(c
* @since 2006-2-2 F6g)2&e{/
* @version 1.0 R;XG2
*/ rf}@16O$'
public class SelectionSort implements SortUtil.Sort { HhZlHL
~f:y^`+Q[
/* "e)C.#3
* (non-Javadoc) h`{agWB
* 0j@nOj(3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cJp:0'd
*/ nw.,`M,N
public void sort(int[] data) { I%4)%
int temp; g3fxf(iY(
for (int i = 0; i < data.length; i++) { c%?31t
int lowIndex = i; Dm^Bk?#(
for (int j = data.length - 1; j > i; j--) { A@:h\<
if (data[j] < data[lowIndex]) { k4@$vxy0
lowIndex = j; 397IbZ\
} G0e]PMeFl
} =I(F(AE
SortUtil.swap(data,i,lowIndex); ~OdE!!
} [.ya&E)x
} __B`0t
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} -XuRQ_)nG
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Shell排序: PM(M c]6
ca@?-)
package org.rut.util.algorithm.support; Bz7rf^H`Z
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import org.rut.util.algorithm.SortUtil; Un~
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/** Z30r|Ufh
* @author treeroot G8sxg&bf{
* @since 2006-2-2 ygN4%-[XA
* @version 1.0 1o
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*/ sWG_MEbu
public class ShellSort implements SortUtil.Sort{ @.D1_A
f3[/zcm;
/* (non-Javadoc) o+}>E31a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,\%qERk
*/ 2kXa
public void sort(int[] data) { qD]&&"B
for(int i=data.length/2;i>2;i/=2){ vV( ?A
for(int j=0;j insertSort(data,j,i); cN?}s0
} M15jwR!:M
} ],?$&
insertSort(data,0,1); 3RbPc8($Y
} [?QU'[
b23 5Zm
/** 6g6BE^o\
* @param data PfrzrRahb
* @param j n7>L&?N#y#
* @param i "t
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*/ VGe OoS
private void insertSort(int[] data, int start, int inc) { _MmSi4]yd
int temp; 1:.I0x!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~uUN\qx52
} j=],n8_i
} i 6DcLE
} _ Vo35kA
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} K{vn[}
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快速排序: 0]~'}
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package org.rut.util.algorithm.support; 0t^Tm0RzH
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import org.rut.util.algorithm.SortUtil; Vw@?t(l >
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/** uXm_ pQpF
* @author treeroot cYeC7l"
* @since 2006-2-2 i(9 5=t(
* @version 1.0 R?Dc*,
*/ GN=ugP 9
public class QuickSort implements SortUtil.Sort{ X+$IaLfCxD
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/* (non-Javadoc) #X`qkW.T<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -Uj3?W
*/ ) 8_x
public void sort(int[] data) { 1SwKd*aRR?
quickSort(data,0,data.length-1); phc9esz
} K}feS(Ji
private void quickSort(int[] data,int i,int j){ x^959QO~
int pivotIndex=(i+j)/2; ?c6`p3p3L
file://swap \F'tl{'\@
SortUtil.swap(data,pivotIndex,j); /=i+7^
"NMSLqO
int k=partition(data,i-1,j,data[j]); gK#G8V-,
SortUtil.swap(data,k,j); Lk>GEi|
if((k-i)>1) quickSort(data,i,k-1); a49xf^{1"i
if((j-k)>1) quickSort(data,k+1,j); !5VT[w
1
IE0hC\C}
} [AA*B
/** cvk$ I"q+
* @param data kp=wz0#
* @param i )J>-;EYb8
* @param j 9e _8Z@|
* @return 2zlBrjk;
*/ i2yE-sgF
private int partition(int[] data, int l, int r,int pivot) { p_:bt7
B
do{ `JZ`j7f
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j96\({;k
SortUtil.swap(data,l,r); ] v8 .ym
} M/LC:,
while(l SortUtil.swap(data,l,r); p| &9#?t4A
return l; cxB{EH,2Um
} 7O]$2
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}
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改进后的快速排序: ;X}!;S%K
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package org.rut.util.algorithm.support; 6p)dO
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import org.rut.util.algorithm.SortUtil; iAn]hVW
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/** U^~jB= =]
* @author treeroot sqE? U*8.-
* @since 2006-2-2 ]N4?*S*jd)
* @version 1.0 nf,u'}psdJ
*/ #k/NS
public class ImprovedQuickSort implements SortUtil.Sort { [:"7B&&A
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private static int MAX_STACK_SIZE=4096; 7@u:F?c
private static int THRESHOLD=10; 'g#EBy
/* (non-Javadoc) H"vy[/UcR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AD0pmD
*/ cd3;uB4\,
public void sort(int[] data) { ZGgM-O1
int[] stack=new int[MAX_STACK_SIZE]; L; (J6p]h
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int top=-1; `F,*NESv
int pivot; FI=]K8
int pivotIndex,l,r; (;T g1$
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stack[++top]=0; }\oy%]_mY
stack[++top]=data.length-1; 3OvQ,^[J4
2(s-8E:
while(top>0){ ;Svs|]d
int j=stack[top--]; }Q#3\z5
int i=stack[top--]; n/vKxtW
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pivotIndex=(i+j)/2; Dqg~g|(Q<
pivot=data[pivotIndex]; M
#)@!
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SortUtil.swap(data,pivotIndex,j); X0&[cyP!
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file://partition >21f%Z
l=i-1; 96]!*}
r=j; @@~Ql
do{ Nt/#Qu2#br
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); mZ!1Vh
SortUtil.swap(data,l,r);
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} ;'7gg]
while(l SortUtil.swap(data,l,r); WJs2d73Qp
SortUtil.swap(data,l,j); *)0-N!N#)
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if((l-i)>THRESHOLD){ |x/00XhS
stack[++top]=i; W, -fnJk
stack[++top]=l-1; TZ>_N;jTZ
} J{qpGRQNa
if((j-l)>THRESHOLD){ xu(N'l.7&
stack[++top]=l+1; )|Xi:Zd5>
stack[++top]=j; ]O 8hkGa
} FNgC TO%
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} xp;CYr"1}
file://new InsertSort().sort(data); /j(3 ~%]o4
insertSort(data); ffgb3
} #z&@f
/** Ow f:Kife
* @param data T/Fj0'
*/ {6Qd,CX
private void insertSort(int[] data) { @yxF/eeEy+
int temp; 8D5v'[j-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); R8n/QCeY{
} JR^#NefJ
} yf@DaIG
} 04}" n
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} 9S!
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归并排序: uX8yS|= *
qdY*y&}"J
package org.rut.util.algorithm.support; e%K
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import org.rut.util.algorithm.SortUtil; H=1Jq
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/** dVe
* @author treeroot r.#"he_6!.
* @since 2006-2-2 \95O
* @version 1.0 pj/w9j G6
*/ ML-?#jNa<
public class MergeSort implements SortUtil.Sort{ OK \F
Nub)]S>_/t
/* (non-Javadoc) SZ3UR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vzPuk|q3
*/ c2fqueK|:W
public void sort(int[] data) { eA'1
int[] temp=new int[data.length]; ,,o5hD0V9
mergeSort(data,temp,0,data.length-1); c$AwJhl^]
} 3Sh#7"K3
Qk h}=3u
private void mergeSort(int[] data,int[] temp,int l,int r){ gK+/wTQ%
int mid=(l+r)/2; BMxe)izT;
if(l==r) return ; :0'2m@x~
mergeSort(data,temp,l,mid); dRu|*s
mergeSort(data,temp,mid+1,r); G
;fc8a[X
for(int i=l;i<=r;i++){ ae-hQF&
temp=data; hQPNxpe
} <WCTJ!Z
int i1=l; +204.Yj?D
int i2=mid+1; M,(UCyT
for(int cur=l;cur<=r;cur++){ #V#sg}IhM?
if(i1==mid+1) _DAj$$ Ru4
data[cur]=temp[i2++]; ccm(r~lhJ
else if(i2>r) >2[nTfS
data[cur]=temp[i1++]; Vb$4'K'
else if(temp[i1] data[cur]=temp[i1++]; @b5zHXF83E
else RZrQ^tI3"
data[cur]=temp[i2++]; 5ON\Ve_H
} "GY/2;
} h.WvPZ2U
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qkb
} 9zs!rlzQ
u/S{^2`b
改进后的归并排序: 3X#)PX9b){
3wf&,4`EX
package org.rut.util.algorithm.support; 1SO!a R#g
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import org.rut.util.algorithm.SortUtil; ,"U_oa3
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/** Eu)(@,]we
* @author treeroot ?X5Y8n]y\h
* @since 2006-2-2 }=T=Z#OgH
* @version 1.0 b<1+q{0r
*/ IyJHKDFk
public class ImprovedMergeSort implements SortUtil.Sort { %UnL,V9)
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private static final int THRESHOLD = 10; n)xLEx,
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/* eGr;P aG
* (non-Javadoc) x-%4-)
* TOC2[mc'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~&\} qz3
*/ f&ri=VJY\T
public void sort(int[] data) { U2TR>0l
int[] temp=new int[data.length]; (m%A>e
B
mergeSort(data,temp,0,data.length-1); k 3S
} i?0+f}5<p
k/]4L!/ T
private void mergeSort(int[] data, int[] temp, int l, int r) { 6X`i*T$.
int i, j, k; 5zk^zn)
int mid = (l + r) / 2; G ,fh/E+
if (l == r) ' En|-M5
return; "s3eO
if ((mid - l) >= THRESHOLD) C0v1x=(xiM
mergeSort(data, temp, l, mid); (#?k|e"Y"`
else X+LG Z4]D
insertSort(data, l, mid - l + 1); R m^$Dn
if ((r - mid) > THRESHOLD) ecIZ+G)k
mergeSort(data, temp, mid + 1, r); & Y Y^Bd#
else !wNj;ST*
insertSort(data, mid + 1, r - mid); 'wm :Xa
M`u&-6
for (i = l; i <= mid; i++) { op5G}QZ
temp = data; !eE;MaS>
} ?vn9HhTD
for (j = 1; j <= r - mid; j++) { U?.cbB,
temp[r - j + 1] = data[j + mid]; Oll,;{<O
} %ok??_}$}q
int a = temp[l]; _G0_<WH6
int b = temp[r]; !${7 )=|=1
for (i = l, j = r, k = l; k <= r; k++) {
o.|P7{v}
if (a < b) { u zgQ_
data[k] = temp[i++]; JDp{d c
a = temp; yMVlTO
} else { ;FfDi*S7
data[k] = temp[j--]; 3 jR I@
b = temp[j]; K0xka[x=(
} <g3)!VR^q
} C(@#I7 G
} r=74'g
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/** g*]/HS>e<G
* @param data hw9qnSeRy
* @param l |f IIfYE
* @param i m(DJ6CSa
*/ B3C%**~:e
private void insertSort(int[] data, int start, int len) { /;{E}`
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sDXD>upO
} Svqj@@_f
} 9Q/t+
} qr<RMs
} kVeR{i<*(
jRGslak;
堆排序: 734f&2
0s'h2={iI
package org.rut.util.algorithm.support; bpgvLZb>s
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import org.rut.util.algorithm.SortUtil; s:ZYiZ-
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/** `WRM7
* @author treeroot $s.:H4:I
* @since 2006-2-2 j0`)m R}
* @version 1.0 ;vuqI5k
*/ ,$A'Y
public class HeapSort implements SortUtil.Sort{ {a9(
Qi
'
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/* (non-Javadoc) z&KrG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JG/Pc1aK
*/ "&Rt&S
public void sort(int[] data) { 0(|Yy/Yq
MaxHeap h=new MaxHeap(); rHaj~s 4
h.init(data); )sZJH9[K
for(int i=0;i h.remove(); ?DrA@;IB
System.arraycopy(h.queue,1,data,0,data.length); =8V
9E
} \@!"7._=
hH(w O\s
private static class MaxHeap{ U]A JWC6
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void init(int[] data){ #T3dfVWv
this.queue=new int[data.length+1]; cKEDRX3
for(int i=0;i queue[++size]=data; !*G%vOa
fixUp(size); N(Sc!rX
} +oev NM
} \`U=pZJ
XT%\Ce!
private int size=0; 6"YcM:5~
pt$\pQ
private int[] queue; nr]:Y3KyxX
sOqT*gwr:
public int get() { hZ`<ID
return queue[1]; G$mAyK:
} 9_-6Lwj6t
5_7y 1
public void remove() { Aw$+Ew[8 2
SortUtil.swap(queue,1,size--); ~J:]cy)Q
fixDown(1); iu.v8I;<
} B?
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file://fixdown 9T#${NK
private void fixDown(int k) { %EH{p@nM&-
int j; lW|`8ykp
while ((j = k << 1) <= size) { W+Q^u7K
if (j < size %26amp;%26amp; queue[j] j++; z3Zo64V~7
if (queue[k]>queue[j]) file://不用交换 Q].p/-[(
break; (Cb;=:3G
SortUtil.swap(queue,j,k); of=N+
W
k = j; Mj6
0?k
} MAQ(PIc>T
} lc[)O3,,B
private void fixUp(int k) { (L<qJd1Q
while (k > 1) { G
_-JR
int j = k >> 1; /*2)|2w
if (queue[j]>queue[k]) IqAML|C
break; [9^lAhX
SortUtil.swap(queue,j,k); ("KtJ
k = j; lG5KZ[/Or
} '\M]$`Et
} 5=_bK^Am
hQ ?zc_3
} fSF_O}kLp
cDIZkni=
} %#x
l+^
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SortUtil: )uu(I5St
+L|x^B3
package org.rut.util.algorithm; b/"gUYo
>@)p*y.K
import org.rut.util.algorithm.support.BubbleSort; r yNe=9p
import org.rut.util.algorithm.support.HeapSort; 5=&ME(fmV
import org.rut.util.algorithm.support.ImprovedMergeSort; c!ieN9^+
import org.rut.util.algorithm.support.ImprovedQuickSort; J9-n3o
import org.rut.util.algorithm.support.InsertSort; FBxg^g%PB@
import org.rut.util.algorithm.support.MergeSort; $p|Im,
import org.rut.util.algorithm.support.QuickSort; ^Na3VP
import org.rut.util.algorithm.support.SelectionSort; M}e}3w
import org.rut.util.algorithm.support.ShellSort; OcLahz6
^r~O*
/** =P%?{7
* @author treeroot ;pj,U!{%s\
* @since 2006-2-2 -}u1ZEND
* @version 1.0 " GY3sam
*/ xzHb+1+p
public class SortUtil { [/o BjiBA
public final static int INSERT = 1; 8]mRX~
public final static int BUBBLE = 2; B$M4f7
public final static int SELECTION = 3; wk#cJ`wG;
public final static int SHELL = 4; lVCnu>8
public final static int QUICK = 5; $0R5 ]]db)
public final static int IMPROVED_QUICK = 6; Vi`P
&uPF
public final static int MERGE = 7; KM"BHaSkF
public final static int IMPROVED_MERGE = 8; jO-T1P']Y
public final static int HEAP = 9; @ZRg9M:N
gBr/Y}I
public static void sort(int[] data) { 1~Z
sort(data, IMPROVED_QUICK); K@%gvLa\
} xX|f{) <
private static String[] name={ =QK ucLo
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Z((e-T#,
}; tA]u=-_h
T+q5~~\d
private static Sort[] impl=new Sort[]{ %l?*w~x
new InsertSort(), $*`E;}S0
new BubbleSort(), &NOCRabc
new SelectionSort(), VTU(C&"S
new ShellSort(), eA*We
new QuickSort(), fA"c9(>m%]
new ImprovedQuickSort(), k
t'[
new MergeSort(),
//0Y#"
new ImprovedMergeSort(), :k-@w5(
new HeapSort() g/(BV7V
}; {#~A `crO
-<L5;
public static String toString(int algorithm){ wrc1N?[bn
return name[algorithm-1]; 8"TlWHF`
} jn`5{ ]D
W[sQ_Z1C
public static void sort(int[] data, int algorithm) { z%BX^b$Hj
impl[algorithm-1].sort(data); E@EP9X
>
} -24ccN;
M3Qi]jO98
public static interface Sort { I@5$ <SN
public void sort(int[] data); YC$>D?FW
} K4-_a{)/
0"Euf41
public static void swap(int[] data, int i, int j) { cc3/XBo
int temp = data; w/:ibG@
data = data[j]; T(,@]=d,DD
data[j] = temp; J:J/AgJuH
}
fda4M
} <,Pl31g^