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。
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插入排序: ,v#O{ma
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package org.rut.util.algorithm.support; NilnS!BM
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import org.rut.util.algorithm.SortUtil; VVw5)O1'
/** x8o/m$[,=u
* @author treeroot G$[Hm\V
* @since 2006-2-2 nIWY<Z"
* @version 1.0 :X}fXgeL
*/ V<ii
public class InsertSort implements SortUtil.Sort{ <8ih >s(C
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/* (non-Javadoc) t\WU}aKML
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j;J`PH
*/ tTbfyI
public void sort(int[] data) { wv
int temp; wlFK#iK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %)w7t[A2D
} }t*:EgfI
} K SJ Ko
} CT/>x3o
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} VA@
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冒泡排序: eExI3"|Q
K+|0~/0
package org.rut.util.algorithm.support; kkIG{Bw
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import org.rut.util.algorithm.SortUtil; <m,bP
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/** K7t_Q8
* @author treeroot n-{.7
* @since 2006-2-2 m^ /s}WEqp
* @version 1.0 32Wa{LG;2
*/ kZ= 2#.
public class BubbleSort implements SortUtil.Sort{ KB{IWu
XUA%3Xr
/* (non-Javadoc) j_.tg7X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T^ - - :1
*/ %I;uqf
public void sort(int[] data) { 5cb8=W-
int temp; -b)3+#f
for(int i=0;i for(int j=data.length-1;j>i;j--){ :1;"{=Yx}
if(data[j] SortUtil.swap(data,j,j-1); Rm}G4Pq
} iO"ZtkeNr
} 2Vs+8/
} U|b)Bw<P
} <B'PB"R3y
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} lQv(5hIm
}@~+%_;
选择排序: NZ?dJ"eq7
So=
B cX-
package org.rut.util.algorithm.support; -XnOj2
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import org.rut.util.algorithm.SortUtil; gX|\O']6
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/** Y?-Ef
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* @author treeroot L\R(//V
* @since 2006-2-2
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* @version 1.0 v3(0Mu0J
*/ 4y!GFhMh
public class SelectionSort implements SortUtil.Sort { CF
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/* wxN&k$`a
* (non-Javadoc) _w2KUvG-8
* !%B-y9\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E,fbIyX
*/ :
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public void sort(int[] data) { PS0/Ok
int temp; ^gkKk&~A5?
for (int i = 0; i < data.length; i++) { B5+$VQ
int lowIndex = i; <sX_hIA^Fx
for (int j = data.length - 1; j > i; j--) { .KtK<Ps[S
if (data[j] < data[lowIndex]) { a-AA$U9hj
lowIndex = j; 2`> (LH
} 5bd4]1gj
} BU7QK_zT:
SortUtil.swap(data,i,lowIndex); FEX67A8/;
} nU 0##
} @Fzw_qr
M
r?dkE=B
} rV2>;FG
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Shell排序: T!Lv%i*|Y
D
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package org.rut.util.algorithm.support; _ q
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import org.rut.util.algorithm.SortUtil; >FJK$>[1:p
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/** jo<Gf 5
* @author treeroot eLbh1L
* @since 2006-2-2 ad52a3deR
* @version 1.0 yo$A0Ti!w
*/ kBY#=e).
public class ShellSort implements SortUtil.Sort{ _Y$v=!fY&
%e_){28 n
/* (non-Javadoc) }=.C~f]A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) um\A
*/ L X #.
public void sort(int[] data) { xK4E+^ b
for(int i=data.length/2;i>2;i/=2){ vV*/"'>
for(int j=0;j insertSort(data,j,i); |!1iLWQ
} NE3/>5
} ;&kZ7%
insertSort(data,0,1); =$ubSfx
} #qJ6iA6{
~q}]/0-m
/** AJ6O>Euq
* @param data V#c=O}
* @param j buWF6LFC
* @param i 2P{! n#"
*/ &ha<pj~
private void insertSort(int[] data, int start, int inc) { E/D@;Ym18
int temp; w;J#+ik
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); z5sKV7&\[n
} faZc18M^1
} Z'm( M[2K
} B*^QTJ
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} 1 -R4A7+3
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快速排序: tMo=q7ig
#jg3Ku;Y
package org.rut.util.algorithm.support; 5z"
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import org.rut.util.algorithm.SortUtil; SK_N|X].
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/** 0.1?hb|p5T
* @author treeroot Ac/LNqIs
* @since 2006-2-2 ("=24R=a
* @version 1.0 (&/~q:a>
*/ yPH5/5;,
public class QuickSort implements SortUtil.Sort{ V~t;
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/* (non-Javadoc) yW i?2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a
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*/ msw=x0{n5
public void sort(int[] data) { 3:b5#c?R-
quickSort(data,0,data.length-1); R5<:3tk=X
} p,\(j
private void quickSort(int[] data,int i,int j){ =':B
int pivotIndex=(i+j)/2; jW}hLjlN
file://swap S^~
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SortUtil.swap(data,pivotIndex,j); *C^TCyBK;
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int k=partition(data,i-1,j,data[j]); {65_k
SortUtil.swap(data,k,j); #jw%0H;l]
if((k-i)>1) quickSort(data,i,k-1); dAjm4F-
if((j-k)>1) quickSort(data,k+1,j); \K:?#07Wj4
U^OR\=G^
} IY|>'}UU#
/** L0ZAF2O
* @param data tCu9
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* @param i N2C f(
* @param j a!;K+wL
>
* @return XZ|\|(6Cc
*/ Lx3`.F\mG
private int partition(int[] data, int l, int r,int pivot) { 8`q"] BQN
do{ ;GZ'Rb
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dewN\
SortUtil.swap(data,l,r); wd
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} bWMb@zm
while(l SortUtil.swap(data,l,r); gy/bA
return l; "T6s;'k
} WhDNt+uk)
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} l D]?9K29
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改进后的快速排序: b yJ[1UK
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package org.rut.util.algorithm.support; 7*47mJyc
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import org.rut.util.algorithm.SortUtil; `W4Is~VVv
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/** ^~m}(6
* @author treeroot +kOXa^K
* @since 2006-2-2 Q_|Lv&
* @version 1.0 IHe?/oUL"b
*/ e41r!od
public class ImprovedQuickSort implements SortUtil.Sort { 8jgamG
n*N`].r#{=
private static int MAX_STACK_SIZE=4096; S!7|vb*ko
private static int THRESHOLD=10; R9%"Kxm
/* (non-Javadoc) 6$p6dmV|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ks<+gL{K|i
*/ :z+l=d:4
public void sort(int[] data) { $`Aps7A
int[] stack=new int[MAX_STACK_SIZE]; oo!JAv}~
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int top=-1; S{qsq\X
int pivot; CNyV6jb
int pivotIndex,l,r; ?rgtbiSW-
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stack[++top]=0; /QVhT
stack[++top]=data.length-1; Tw9?U,]
+rOd0?
while(top>0){ MH_3nN
int j=stack[top--]; ^9oJuT!tu
int i=stack[top--]; |&rxDf}W
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pivotIndex=(i+j)/2; }%k3
pivot=data[pivotIndex]; hN.{H:skL)
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SortUtil.swap(data,pivotIndex,j); ]08
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file://partition k54Vh=p
l=i-1; zgA/B{DaC;
r=j; c=~FXV!
do{ z<n&P7k5j
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0o-KjX?kP
SortUtil.swap(data,l,r); C(5B/W6
} dO\irv)
while(l SortUtil.swap(data,l,r); ^EmI;ks
SortUtil.swap(data,l,j); [V.#w|n
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if((l-i)>THRESHOLD){
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stack[++top]=i; ##qs{s^]
stack[++top]=l-1; ^`oyf{w@
} +umVl
if((j-l)>THRESHOLD){ uY Y{M`
stack[++top]=l+1; 44(l1xEN+
stack[++top]=j; 2 1]87$
} W\J wEb9Y
[5TGCGxP{
} cAc>p-y%
file://new InsertSort().sort(data); @If ^5s;z
insertSort(data); fr([g?F%D
} %oqC5O6
/** Dg2=;)"L
* @param data )
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*/ $oU40HA)W]
private void insertSort(int[] data) { 7>>6c7e
int temp; b6A]/290x
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W:
vw.
} .l(t\BfE~
} /4PV<[
:_
} o&b1-=MC2
COk;z.Kn
} %>Y86>mVz
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归并排序: O+Q t8,
V[T`I a\
package org.rut.util.algorithm.support; +Pm
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import org.rut.util.algorithm.SortUtil; O4i5fVy{
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/** 4tv}V:EO
* @author treeroot Ot#O];3
* @since 2006-2-2 :;(zA_-
* @version 1.0 '8b/TL
*/ A$]&j5nh|
public class MergeSort implements SortUtil.Sort{ l3C%`[MB
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/* (non-Javadoc) ee|i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2po>%Cp
*/ sHSD`mYq
public void sort(int[] data) { Dtw1q-
int[] temp=new int[data.length]; ( d2|r)O
mergeSort(data,temp,0,data.length-1); CZL:&~l1
} ~@wM[}ThP$
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private void mergeSort(int[] data,int[] temp,int l,int r){ xF4>G0
int mid=(l+r)/2; rL/e
if(l==r) return ; - s,M+Q(<
mergeSort(data,temp,l,mid); sw'?&:<"Ow
mergeSort(data,temp,mid+1,r); tgP x!5U
for(int i=l;i<=r;i++){ 5}uH;E)4
temp=data; 6.!Cm$l
} =
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int i1=l; l"#}g%E
int i2=mid+1; feH|sz`e
for(int cur=l;cur<=r;cur++){ 30fsVwE2
if(i1==mid+1) @rO4BTi>O
data[cur]=temp[i2++]; {T0f]]}Q
else if(i2>r) 3.
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data[cur]=temp[i1++]; Gw/imXL
else if(temp[i1] data[cur]=temp[i1++]; (A\p5@ht
else R\B-cU[,
data[cur]=temp[i2++]; 3k J8Wn
} "XEKoeG{
} Wx<fD()
?x|8"*N
} jJxV)AIY
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改进后的归并排序: l#W9J.q(
AI|8E8h+D
package org.rut.util.algorithm.support; >Bj+!)96q
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import org.rut.util.algorithm.SortUtil; *P#okwp
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/** $
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* @author treeroot {q[l4_
* @since 2006-2-2 YMidSfi
* @version 1.0 \UdHN=A&
*/ 8e`'Ox_5a
public class ImprovedMergeSort implements SortUtil.Sort { gRk%ObJGqm
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private static final int THRESHOLD = 10; xMAfa>]{n
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/* y7;i4::A\
* (non-Javadoc) =Mb1)^m
* "QWF&-kAI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^=H. .pr
*/ 1kG{z;9
public void sort(int[] data) { _k0X)N+li
int[] temp=new int[data.length]; NDJIaX:]
mergeSort(data,temp,0,data.length-1); qH3|x08
} SIBNU3;DL
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private void mergeSort(int[] data, int[] temp, int l, int r) { C6=P(%y
int i, j, k; {xw"t9(fE
int mid = (l + r) / 2; e;y\v/A
if (l == r) Q -!,yCu
return; . C g2Y
if ((mid - l) >= THRESHOLD) om`x"x&6
mergeSort(data, temp, l, mid); Mpfdl65
else QJL%J
insertSort(data, l, mid - l + 1); -'j_JJ
if ((r - mid) > THRESHOLD) y~.k-b<{[
mergeSort(data, temp, mid + 1, r); ,cbCt
else 2VrO8q(
insertSort(data, mid + 1, r - mid); ?R7>xrp5
+:hZ,G?>
for (i = l; i <= mid; i++) { l\PDou@5
temp = data; i?.7o*w8
} +1Qa7\
for (j = 1; j <= r - mid; j++) { (v11;k dJB
temp[r - j + 1] = data[j + mid]; 7QXA*.'
F
} "f/Su(6{0
int a = temp[l]; Hm>M}MF3
int b = temp[r]; BO#XQ,
for (i = l, j = r, k = l; k <= r; k++) { FKTdQg|NZ
if (a < b) { v"y0D
data[k] = temp[i++]; 9] i$`y
a = temp; HLL[r0P`F
} else { ^sLnKAN
data[k] = temp[j--]; PGaB U3
b = temp[j]; hJrcy!P<a
} cQ= "3M)~r
} f`zH#{u
} 3 34UMH__
DB1GW,
/** huMNt6P[
* @param data "|{3V:e>a
* @param l IO,ddVO
* @param i J^}w,r*=
*/ 2~:jg1
private void insertSort(int[] data, int start, int len) { +(v<_#wR-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .T*K4m{b0
} $$UMc-Pq
} <78]OZ] Z
} t7A '
} U>0' K3_
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堆排序: 1`t4wD$/
Ee& A5~
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; OYcf+p"<\
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/** 8vzjPWu
* @author treeroot s[{L.9Y
* @since 2006-2-2 %9|}H [x
* @version 1.0 1J}i :i&
*/ 4vri=P 2%
public class HeapSort implements SortUtil.Sort{ k=t\
Va^AEuzF
/* (non-Javadoc) 'b#`)w@/=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nWTo$*>W
*/ y[U/5! `zV
public void sort(int[] data) { DP2 ^(d<
MaxHeap h=new MaxHeap(); E0K'|*
h.init(data); mL\j^q,Y
for(int i=0;i h.remove(); )` nX~_'p
System.arraycopy(h.queue,1,data,0,data.length); em^|E73
} >Ab>"!/'K
(TufvHC
private static class MaxHeap{ BMw_F)hTO
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void init(int[] data){ ]LF Y2w<
this.queue=new int[data.length+1]; Q'f!392|
for(int i=0;i queue[++size]=data; j, SOL9yg
fixUp(size); Q>\y%&df
} t;P%&:"@M
} GA19=gow
z^s40707x
private int size=0; #UR4I2t*
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private int[] queue; l3Vw?f
y %dUry%>
public int get() { "=l<%em
return queue[1]; i
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} I(6k.PQ
GarPnb
public void remove() { __U;fH{c
SortUtil.swap(queue,1,size--); U#oe8(?#
fixDown(1); */gm! :Ym
} {^TV Zdw
file://fixdown ]h0Fv-[A
private void fixDown(int k) { rbP"
n)0=
int j; :3qA7D }
while ((j = k << 1) <= size) { #JAU5d
if (j < size %26amp;%26amp; queue[j] j++; {I s?>m4
if (queue[k]>queue[j]) file://不用交换 RX",Zt$q
break; 4l! ^"=rh
SortUtil.swap(queue,j,k); /yHM=&Vg]
k = j; ygm4A j>
} 8i!~w 7z
} *uYnu|UQH
private void fixUp(int k) { 76[O3%
while (k > 1) { OtuOT=%
int j = k >> 1; &*TwEN^h
if (queue[j]>queue[k]) iE}jilU
break; l6b3i
v,
SortUtil.swap(queue,j,k); 8Rq+eOP=S
k = j; WeGT}
} 1gp3A
} &&e{ 9{R
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} wI+oG
7+aTrE{
} <Sn5ME<*
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SortUtil: n50XGv
^ri?eKy.-g
package org.rut.util.algorithm; ^n5[pF}Gw
Tfc5R;Rw
import org.rut.util.algorithm.support.BubbleSort; *JXiOs
import org.rut.util.algorithm.support.HeapSort; O~F/pJN`
import org.rut.util.algorithm.support.ImprovedMergeSort; kzCD>m
import org.rut.util.algorithm.support.ImprovedQuickSort; gvYib`#
import org.rut.util.algorithm.support.InsertSort; pfW0)V1t
import org.rut.util.algorithm.support.MergeSort; <Vp7G%"'W
import org.rut.util.algorithm.support.QuickSort; 2BOe,giy
import org.rut.util.algorithm.support.SelectionSort; }zVPdBRfm
import org.rut.util.algorithm.support.ShellSort; 70 !&
P/._ tQu6
/** {HeIY2
* @author treeroot \RZFq<6>
* @since 2006-2-2 U6qv8*~
* @version 1.0 0 1[LPN
*/ $NP5Z0v7
public class SortUtil { JDVMq=ui
public final static int INSERT = 1; <^VZ4$j
public final static int BUBBLE = 2; VAf~,T]Ww
public final static int SELECTION = 3; 1E!0N`E
public final static int SHELL = 4; ,-Fhb~u
public final static int QUICK = 5; ~1YL
public final static int IMPROVED_QUICK = 6; sqHvrI
public final static int MERGE = 7; }NPF]P;
public final static int IMPROVED_MERGE = 8; rAD5n,M]
public final static int HEAP = 9; +v%V1lf^~
B?c9cS5Mj
public static void sort(int[] data) { FQ?,&s$Bmd
sort(data, IMPROVED_QUICK); 4R\bU"+jZ_
} l5S(xQ
private static String[] name={ p8y_uNQE
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "/hM&
}; qWe1`.o
>L/Rf8j &
private static Sort[] impl=new Sort[]{ f&t]O$
new InsertSort(), _GK^ 7}u
new BubbleSort(), !_s|h@
new SelectionSort(), 35Nwx<
new ShellSort(), cs`/^2Vf"#
new QuickSort(), u814ZN}
new ImprovedQuickSort(), UiS9uGj
new MergeSort(), Ea1{9>S
new ImprovedMergeSort(), vTjgW?9
new HeapSort() evPr~_
}; OlhfBu)~
4vTO # F
public static String toString(int algorithm){ ` 1DJwe2
return name[algorithm-1]; }gyJaMA
} =<(:5ive
v vlfL*f
public static void sort(int[] data, int algorithm) { 'P}"ZHW
impl[algorithm-1].sort(data); ^4]#Ri=U
} oM-{)rvQd
@``kt*+K+
public static interface Sort { Y+<C[Fiq
public void sort(int[] data); 9}`O*A=KC
} @B
~![l
;6t>!2I>C
public static void swap(int[] data, int i, int j) { SqFya
int temp = data; ]>/YU*\
data = data[j]; `3kE$h#
data[j] = temp; &/=>:ay+#
} Gk,{{:M:5
} #h ;j2