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。 d7waBsf
插入排序: e&sZ]{uD
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package org.rut.util.algorithm.support; Y"6
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import org.rut.util.algorithm.SortUtil; `2-6Qv
/** }N[|2nR'
* @author treeroot v EppkS U1
* @since 2006-2-2 -< D7
* @version 1.0 yw2Mr+9I
*/ $c"byQ[3S
public class InsertSort implements SortUtil.Sort{ 9'nM$a
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/* (non-Javadoc) 2[!#Xf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hEUS&`K
*/ Z>hS&B
public void sort(int[] data) { ZeM~13[
int temp; [d
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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); Sggha~E2s
} KZrg4TEVi
} a,mG5bQ!
} 7[z^0?Pygf
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} S:2M9nC
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冒泡排序: )45~YDS;t
cHo@F!{o=
package org.rut.util.algorithm.support; NZT2ni4
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import org.rut.util.algorithm.SortUtil; #J=^CE
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/** )S?. YCv?
* @author treeroot ?.Iau/
* @since 2006-2-2 QA|87alh
* @version 1.0 TQ`s&8"P
*/ UU\wP(f
public class BubbleSort implements SortUtil.Sort{ VWhq+8z
|Y|6`9;
/* (non-Javadoc) QAGR\~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cPaz-
*/ zplAH!s5''
public void sort(int[] data) { =u\W{1
int temp; 3oD?e
for(int i=0;i for(int j=data.length-1;j>i;j--){ Rhi`4wo0$
if(data[j] SortUtil.swap(data,j,j-1); ?e=3G4N
} oF'_x,0
} pQ~Y7
} @M( hyS&on
} s Zn@y e^
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} Pgug!![
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选择排序: {7d(B1[1
1fgO3N
package org.rut.util.algorithm.support; i ZU1w7Z
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import org.rut.util.algorithm.SortUtil; pW4O[v`
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/** T-MC|>pv
* @author treeroot 3R|UbG`
* @since 2006-2-2 n[[2<s*YJ
* @version 1.0 Y @(izC&h
*/ GZxPh&BM?
public class SelectionSort implements SortUtil.Sort { GN1Q\8)o
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/* &VPfI
* (non-Javadoc) (#e,tu
* ]mzghH:E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mo'6<"x
*/ M{GT$Q
public void sort(int[] data) { ]g] ]\hS
int temp; }BYs.$7
for (int i = 0; i < data.length; i++) { 3A&:
c/
int lowIndex = i; xg(*j[ff3
for (int j = data.length - 1; j > i; j--) { op8[8pt%
if (data[j] < data[lowIndex]) { E;1QD/E$
lowIndex = j; eP(|]Rk
} !l9i)6W
} q"LE6?hs
SortUtil.swap(data,i,lowIndex); D( \c?X"
} kR0/jEz
C
} }[;{@Zn
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} )L+>^cJI<
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Shell排序: bVxbQ$
!kW~s_gUb*
package org.rut.util.algorithm.support; ;$.^
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import org.rut.util.algorithm.SortUtil; N({0" 7
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/** #i;y[dQ
* @author treeroot MSqW {
* @since 2006-2-2 U{,:-R
* @version 1.0 4s@oj
*/ ptQCqQ1_d
public class ShellSort implements SortUtil.Sort{ ^\ku}X_[?
V=d~}PJ>
/* (non-Javadoc) %/n#{;c#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M
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*/ |=u
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public void sort(int[] data) { 4e20\q_{
for(int i=data.length/2;i>2;i/=2){ 50`=[l`V
for(int j=0;j insertSort(data,j,i); zI7iZ"2a
} Um~DA
} BMdcW
MYU\
insertSort(data,0,1); he!Uq%e
} 'ZFbyt Q2
<SKzCp\
/** 6DuA
* @param data 'z9}I
#
* @param j Mp`!zwR
* @param i [QDM_n
*/ a{
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private void insertSort(int[] data, int start, int inc) { X..<U}e
int temp; {>Yna"p
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); DCP
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} Lk lD^AJA
} Uz_OUTFM
} G,X> f?
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} *{!E`),FX
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快速排序: M@]@1Q.p
#z#`EBXV$6
package org.rut.util.algorithm.support; =#T3p9
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import org.rut.util.algorithm.SortUtil; O0_kLH$.
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/** E#n=aY~u-
* @author treeroot /?%1;s:'
* @since 2006-2-2
*v#Z/RrrA
* @version 1.0 T+j-MR}{\
*/ VQ7A"&hh
public class QuickSort implements SortUtil.Sort{ rI#,FZ
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/* (non-Javadoc) cqG&n0zb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /0YO`])"
*/ :h8-y&;
public void sort(int[] data) { Gp0yRT.
quickSort(data,0,data.length-1); G-[.BWQ
} Ex+E66bE
private void quickSort(int[] data,int i,int j){ EkpM'j=
int pivotIndex=(i+j)/2; KY+BXGW*
file://swap h4E[\<?
SortUtil.swap(data,pivotIndex,j); a}g<<{
24I\smO
int k=partition(data,i-1,j,data[j]); +>QD4z#
SortUtil.swap(data,k,j); )}to7r7`
if((k-i)>1) quickSort(data,i,k-1); 5 \iX%w@
if((j-k)>1) quickSort(data,k+1,j); T9?8@p\}(
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} R*O<(
/** PUEEfq!%
* @param data 4Z0Y8y8)
* @param i B-oQjr-
* @param j 3Ct)5J
* @return 06NW2A%wv
*/ aL|a2+P[`q
private int partition(int[] data, int l, int r,int pivot) { PouWRGS_
do{ 2gJkpf9JN
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (mgv:<c;BA
SortUtil.swap(data,l,r); QV>hQ]L
} B8 r#o=q1
while(l SortUtil.swap(data,l,r); WelB"L
return l; bL2b^UB~%
} -Mzm~@_s]
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} <O3,b:vw
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改进后的快速排序: AGV+Y6
BnU3oP
package org.rut.util.algorithm.support; Qe;R3D=T;
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import org.rut.util.algorithm.SortUtil; cH`ziZ<&m1
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/** )Ec /5=A
* @author treeroot a{\<L/\
* @since 2006-2-2 mJ'5!G
* @version 1.0 RYV:?=D7s
*/ e=Q{CsP
public class ImprovedQuickSort implements SortUtil.Sort { _i2guhRs*Q
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private static int MAX_STACK_SIZE=4096; B*otquz
private static int THRESHOLD=10; _ykT(`.#
/* (non-Javadoc) do DpTwvh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
j>)yV@g/
*/ )\+1*R|H}
public void sort(int[] data) { <_#a%+5d
int[] stack=new int[MAX_STACK_SIZE]; H|z:j35\
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int top=-1; ^]TYS]C
int pivot; j[|mC;y.
int pivotIndex,l,r; ~m&q@ms&
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stack[++top]=0; 64l(ru<
stack[++top]=data.length-1; ;uaZp.<um&
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while(top>0){ I`q"
int j=stack[top--]; 6]fz;\DgP
int i=stack[top--]; o{OY1 ;=6
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pivotIndex=(i+j)/2; "bA8NQIP
pivot=data[pivotIndex]; cIg+^Tl
qsHjqK@(
SortUtil.swap(data,pivotIndex,j); ok/{ w
#T08H,W/
file://partition yZY.B
{
l=i-1; jfjT::f>l
r=j; F!cRx%R
do{ Z`x*Igf8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /^':5"=o
SortUtil.swap(data,l,r); %Wa. 2s
} _$m1?DZ
while(l SortUtil.swap(data,l,r); XX'mM v
SortUtil.swap(data,l,j); `J-&Y2_/k
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if((l-i)>THRESHOLD){ G$E+qk
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stack[++top]=i; NU%<Ws=
stack[++top]=l-1; hIFfvUl
} :\KJw
if((j-l)>THRESHOLD){ 1{?5/F \ +
stack[++top]=l+1; +J7xAyv_Oz
stack[++top]=j; }o7"2hht
} d[y(u<Vl
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} V?N8 ,)j
file://new InsertSort().sort(data);
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insertSort(data); p_qJI@u8
} @WICAC=
/** PLhlbzc f
* @param data G'(8/os{
*/ HBcL1wfS
private void insertSort(int[] data) { ~ ":}Rs
int temp; %Iv*u sXP
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,o sM|!,
} DgKe!w$
} 7(B"3qF8|
} N.?)s.D(
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} e#s-MK-Q
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归并排序: -}9># <v
~
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package org.rut.util.algorithm.support; X^)vZL?
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import org.rut.util.algorithm.SortUtil; |%12Vr]J
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/** XG01g3
* @author treeroot %OAvhutS
* @since 2006-2-2 UBM:.*wN
* @version 1.0 %>EM ^Z
*/ tl^![Z
public class MergeSort implements SortUtil.Sort{ y28 e=i
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/* (non-Javadoc) y\zRv(T=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wMU}EoGS?
*/ OpFm:j3
public void sort(int[] data) { B-W8Zq#4>
int[] temp=new int[data.length]; @h!nVf%fe
mergeSort(data,temp,0,data.length-1); /7hC
/!@
} 'ARbJ1a
o>Q=V0?
private void mergeSort(int[] data,int[] temp,int l,int r){ OtZc;c
int mid=(l+r)/2; i?B(I4a!G
if(l==r) return ; r"&VG2c0K
mergeSort(data,temp,l,mid); @y(<4kLz
mergeSort(data,temp,mid+1,r); CC,CKb
for(int i=l;i<=r;i++){ DgODTxiX
temp=data; 4Bk9d\z
} C(}N*e1
int i1=l; cCO2w2A[*
int i2=mid+1; Qgxpq{y
for(int cur=l;cur<=r;cur++){ !M;><b}=5
if(i1==mid+1) >wf.C%
data[cur]=temp[i2++]; P;
9{;
else if(i2>r) UB,:won
data[cur]=temp[i1++]; @k3xk1*
else if(temp[i1] data[cur]=temp[i1++]; ]h?p3T$h
else PAS0 D
#
data[cur]=temp[i2++]; u_jhmKr~
} 5LzP0F
U
} aM|;3j1p
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} DLd1Cl:"~:
n
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改进后的归并排序: +MyXIWmD
# "!q_@b,D
package org.rut.util.algorithm.support; B3'-:
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import org.rut.util.algorithm.SortUtil; !dGSZ|YZ
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/** D2]i*gs
* @author treeroot SYwB
#|
* @since 2006-2-2 GL'l "L
* @version 1.0 `%Dz 8Z
*/ jW;g{5X
public class ImprovedMergeSort implements SortUtil.Sort { <3!Q Xc
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private static final int THRESHOLD = 10; 0F9p'_C
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w}=
/* 1Uk Gjw1J
* (non-Javadoc) D|D)782
* CqR^w(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l$ufW|
*/ Qm>2,={h
public void sort(int[] data) { nd,2EX<bE
int[] temp=new int[data.length]; `&URd&ouJD
mergeSort(data,temp,0,data.length-1); .>
5[;
} |OBh:d_B]
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Z
private void mergeSort(int[] data, int[] temp, int l, int r) { 'q\[aKEX=
int i, j, k; J=6(
4>
int mid = (l + r) / 2; "ifv1KZ#
if (l == r) r mJ`^6V
return; NM+(ss'
if ((mid - l) >= THRESHOLD) v\dP
mergeSort(data, temp, l, mid); Ot;)zft
else ;VS$xnZ
insertSort(data, l, mid - l + 1); mOfTq]
@B
if ((r - mid) > THRESHOLD) sw+vyBV)r
mergeSort(data, temp, mid + 1, r); 1.I58(0~+
else z
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insertSort(data, mid + 1, r - mid); %<{1N|
+*Zjo&pc
for (i = l; i <= mid; i++) { 4WP@ F0@n3
temp = data; s@(ME1j(U!
} IsiBn(1Z
for (j = 1; j <= r - mid; j++) { )`K!XX$%
temp[r - j + 1] = data[j + mid]; K#LDmC
} FK~*X3'
int a = temp[l]; 65U&P5W
int b = temp[r]; L\xR<m<,
for (i = l, j = r, k = l; k <= r; k++) { <+_WMSf;4
if (a < b) { SAhk `_
data[k] = temp[i++]; vP'#x
a = temp; 0DX)%s,KO
} else { @1s
2#)l(
data[k] = temp[j--]; 3|PV.
b = temp[j]; _*++xF1
} th%T(D5n
} yq12"Rs
} #Wq@j1?
#vzt6x@*
/** t5k=ngA
* @param data eI1C0Uz1
* @param l ?g4S51zpp
* @param i l7#2
e ORm
*/ 5xhYOwQBo
private void insertSort(int[] data, int start, int len) { R5=M{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?*&5`Xh
} Yc^,Cj{OM
} ,c|Ai(U
} 1*?L>@Wdy
} <=]:ED $V@
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堆排序: 95sK ;`rE+
`JcWH_[
package org.rut.util.algorithm.support; xM?tdQ~VHY
6 -BC/
import org.rut.util.algorithm.SortUtil; ^#]eCXv
MH/bJtNq
/** v.F|8 cG
* @author treeroot %xdyGAl:
* @since 2006-2-2 HL%|DCo
* @version 1.0 ,L\>mGw
*/ {_ {zs!r
public class HeapSort implements SortUtil.Sort{ vngn^2
Y%^qt]u.8
/* (non-Javadoc) }pKKNZ`[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R%6KxN)+@
*/ GHpP
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public void sort(int[] data) { 6|QIzs<Z-X
MaxHeap h=new MaxHeap(); AbIYdFX B
h.init(data); >[S\NAE>
for(int i=0;i h.remove(); $:D\yZ,
System.arraycopy(h.queue,1,data,0,data.length); > ,x``-
} lJt?0;gn
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private static class MaxHeap{ 5=Il2
7`tJ/xtMy;
void init(int[] data){ EzU3'x
this.queue=new int[data.length+1]; [JKLlR
for(int i=0;i queue[++size]=data; @PV3G
KJ
fixUp(size); Mp06A.j[
} ^e--4B9|
} %[on.Q'1]2
'#>(JN5\
private int size=0; _Uhl4Mh
rC6@
]
private int[] queue; 3cc;BWvM
!-4VGt&c,
public int get() { o
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return queue[1]; @4Lol2
} ,Bl_6ZaL
dst!VO:
M
public void remove() { {dwlW`{
SortUtil.swap(queue,1,size--); $pauPEe
fixDown(1); ~7:Q+ 0,,
} Qp +M5_
file://fixdown )H+ p6<
private void fixDown(int k) { W4=A.2[q
int j; JhvT+"~
while ((j = k << 1) <= size) { tk+4noA
if (j < size %26amp;%26amp; queue[j] j++; Zou;o9Ww
if (queue[k]>queue[j]) file://不用交换 a~Yq0 d?`D
break; %v[KLMo'(
SortUtil.swap(queue,j,k); 9>=S@hVMd
k = j; ]xPy-j6C
} ^GNL:D%6d
} 36}&{A
private void fixUp(int k) { zGa
V^X
while (k > 1) { ,,;vG6^a
int j = k >> 1; NG?g(
if (queue[j]>queue[k]) T>w;M?`9K
break; 04:QEC"9mj
SortUtil.swap(queue,j,k); uG(XbDZZ1W
k = j; EPU3Jban
} [0lO0ik>G
} XO}SPf-
!UHX?<3r
} yeA]j[ #
fa!8+kfi
} A}i>ys
sLf~o"yb
SortUtil: l_pf9!z
qfF2S
package org.rut.util.algorithm; lqvP
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import org.rut.util.algorithm.support.BubbleSort; s?PB ]Tr
import org.rut.util.algorithm.support.HeapSort; =z\/xzAwX
import org.rut.util.algorithm.support.ImprovedMergeSort; eE@7AM
import org.rut.util.algorithm.support.ImprovedQuickSort; j|LO g
import org.rut.util.algorithm.support.InsertSort; 5:%`&B\
import org.rut.util.algorithm.support.MergeSort; fni7HBV?
import org.rut.util.algorithm.support.QuickSort; szp.\CMz
import org.rut.util.algorithm.support.SelectionSort; sU/vXweky"
import org.rut.util.algorithm.support.ShellSort; W&7(
goc; .~?
/** @>`qfy?
* @author treeroot fYlqaO4[
* @since 2006-2-2 +@~e9ZG%a
* @version 1.0 S2EV[K8#
*/ o0TB>DX$`
public class SortUtil { ( +(bw4V/
public final static int INSERT = 1; zEDN^K '
public final static int BUBBLE = 2; w@H@[x
public final static int SELECTION = 3; K;]Dh?
public final static int SHELL = 4; 9&{HD
public final static int QUICK = 5; PNH>LT^
public final static int IMPROVED_QUICK = 6; M6y|;lh''c
public final static int MERGE = 7; #v*3-) 8
public final static int IMPROVED_MERGE = 8; dv?t;D@p!
public final static int HEAP = 9; 5>h/LE]"
I>lblI$7
public static void sort(int[] data) { 37*2/N2
sort(data, IMPROVED_QUICK); X39%O'
} S 9;FD 3
private static String[] name={ Bnw^W_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =KHX_ib
}; {Rn*)D9
@_?Uowc8
private static Sort[] impl=new Sort[]{ 7Ac.^rv5
new InsertSort(), jWso'K
new BubbleSort(), y0'WB`hNQ
new SelectionSort(), dRUmC H
new ShellSort(), HahA} Q
new QuickSort(), !w/]V{9`X
new ImprovedQuickSort(), P>R u
new MergeSort(), ;8w
CQ
new ImprovedMergeSort(), N!<X%Ym
new HeapSort() lU.aDmy<
}; |(uo@-U
V-18~+F~"a
public static String toString(int algorithm){ n!U1cB{
return name[algorithm-1]; 6n
H'NNS:J
} w I[Hoi
V
Nhtc^DX
public static void sort(int[] data, int algorithm) { WLH ;{
impl[algorithm-1].sort(data); &:~9'-O
} /*Gbl
lYU?j|n
public static interface Sort { df/7u}>9
public void sort(int[] data); zUWeOR'X
} nLR
%
@!hf!
public static void swap(int[] data, int i, int j) { >RrG&Wv59
int temp = data; gp+@+i>b+[
data = data[j];
zuF]E+
data[j] = temp; lU`t~|>r+
} ,M
:j5
} p{&o{+c