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。 MqH~L?~}|
插入排序: (P8oXb+%
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package org.rut.util.algorithm.support; r U5'hK
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import org.rut.util.algorithm.SortUtil; #1R
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/** rfpxE>_|G
* @author treeroot E3.s8}}
* @since 2006-2-2 2_v>8B
* @version 1.0 :"]ei@
*/ LcF3P
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public class InsertSort implements SortUtil.Sort{ :LG%8Z{R
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/* (non-Javadoc) h65j,v6B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rg.if"o
*/ pXa? Q@6
public void sort(int[] data) { N3) v,S-
int temp; k*^W
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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); #w6CL
} "-%H</
} v^'~-^s
} '"^JNb^I
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} Ymom 0g+f
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冒泡排序: [*t EHW
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package org.rut.util.algorithm.support; qC1@p?8$
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import org.rut.util.algorithm.SortUtil; t;3.;
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/** g (k|"g`*
* @author treeroot RUKSGj_NJ
* @since 2006-2-2 ^EOjq
* @version 1.0 -&}E:zoe
*/ OFv} jT
public class BubbleSort implements SortUtil.Sort{ Q2Rj0E`
) /'s&
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/* (non-Javadoc) ^cm^JyS)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HxaUVg0
*/ z^.0eP8\j
public void sort(int[] data) { y
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int temp; ~JpUO~i/
for(int i=0;i for(int j=data.length-1;j>i;j--){ #C^m>o~R
if(data[j] SortUtil.swap(data,j,j-1); Q
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} (i8t^
} %3j5Q
} bE~lc}%
} k7*q.2 0
@AOiZOH
} QL#y)G53Q
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选择排序: \ 714 Pyy
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package org.rut.util.algorithm.support; r;z A `
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import org.rut.util.algorithm.SortUtil; -wB AFr
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/** {QID @
* @author treeroot nKdLhCN'=
* @since 2006-2-2 hh9{md\
* @version 1.0 #eYVZ=E
*/ iq$/6!t
public class SelectionSort implements SortUtil.Sort { /eQn$ZRP,
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/* >q`X%&l_
* (non-Javadoc) "dOzQz*E
* \~PFD%]:3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?F/3]lsggT
*/ ]_s]Q_+E
public void sort(int[] data) { sXu]k#I^"
int temp; YVT^}7#
for (int i = 0; i < data.length; i++) { DZue.or
int lowIndex = i; XJ;/kR
for (int j = data.length - 1; j > i; j--) { 00i9yC8@6
if (data[j] < data[lowIndex]) { (agdgy:#
lowIndex = j;
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} ;/@R{G{+~;
} 2olim1
SortUtil.swap(data,i,lowIndex); rAKdf??
} I1gu<a
} }wVrmDh \
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} '&d4x c
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Shell排序: %[J( ,rm
J5k%
package org.rut.util.algorithm.support; iwbjjQPr
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import org.rut.util.algorithm.SortUtil; r`2& o
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/** \1ZfSc
* @author treeroot >EY0-B
* @since 2006-2-2 P]n
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* @version 1.0 G;e}z&6<k
*/ 5j]%@]M$Z
public class ShellSort implements SortUtil.Sort{ _bX)fnUu
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/* (non-Javadoc) h>wU';5#f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L$g;^@j
*/ pfT7
public void sort(int[] data) { (I$hw"%&
for(int i=data.length/2;i>2;i/=2){ AF@C9s
for(int j=0;j insertSort(data,j,i); 6XP>p$-
} tVO x
} $[Fk>d
insertSort(data,0,1); .NKN2
} 4:.M*Dz
!>Xx</iD1
/** L|<Mtw
* @param data {'1,JwSmb
* @param j <6@Db$-
* @param i 9g7T~|P
*/ %^S1 fUwT
private void insertSort(int[] data, int start, int inc) { zSu2B6YU}
int temp; 6R25Xfm_|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?g'l/xuRe
} W;=ZQ5Lw
} \21!NPXH2
} "k.<" pf
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} 6vDgMfw
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快速排序: KnuqU2<
{
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; =6Z1yw7s
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/** |
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* @author treeroot %lBFj/B
* @since 2006-2-2 kW"N~Xw)
* @version 1.0 M-n +3E9
*/ s
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public class QuickSort implements SortUtil.Sort{ 0:XmReO+k
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/* (non-Javadoc) d$!ibL#o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y=t
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*/ mwt3EV5
public void sort(int[] data) { FGC[yz1g:
quickSort(data,0,data.length-1); EB\\
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} F
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private void quickSort(int[] data,int i,int j){ avQwbAh[
int pivotIndex=(i+j)/2; n}"MF>zDK
file://swap +p2)uXqW
SortUtil.swap(data,pivotIndex,j); hQ9VcS6=gD
j:0z/gHp$
int k=partition(data,i-1,j,data[j]); `sSI; +
SortUtil.swap(data,k,j); ~sOAm
if((k-i)>1) quickSort(data,i,k-1); q N>j2~
if((j-k)>1) quickSort(data,k+1,j); *p"%cas
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} 2?&h{PA+
/** ;aSEv"iWX
* @param data K#>B'>A\
* @param i #(OL!B
* @param j bS*9eX=K
* @return 8"+Kz
*/ L!\I>a5C0G
private int partition(int[] data, int l, int r,int pivot) { ;X8eZQ
do{ #jQITS7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lyP<&<Y5
SortUtil.swap(data,l,r); RJ`F2b sYN
} SJ<nAX
while(l SortUtil.swap(data,l,r); 0L'h5i>H)
return l; O[!]/qP+.
} HJDM\j*5
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} ]'hz+V31%
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改进后的快速排序: |1#*`2j\=9
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package org.rut.util.algorithm.support; .RdnJ&K*
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import org.rut.util.algorithm.SortUtil; b^0=X!bg
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/** {Wt=NI?Ow
* @author treeroot PA Jt M
* @since 2006-2-2 tks1*I$S<
* @version 1.0 X4gs{kx}|
*/ +5voAx!
public class ImprovedQuickSort implements SortUtil.Sort { L:7%W dyh
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private static int MAX_STACK_SIZE=4096; ZjWI~"]
private static int THRESHOLD=10; />H9T[3=
/* (non-Javadoc) #}o*1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t\ ym4`"
*/ !IcPO
public void sort(int[] data) { H>%K}Fh
int[] stack=new int[MAX_STACK_SIZE]; .^eajb`:
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int top=-1; cJMp`DQzc
int pivot; 4PR!OB
int pivotIndex,l,r; Lc=t,=OhGe
idEhxvAo
stack[++top]=0; /;
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stack[++top]=data.length-1; %AaZc=a[c
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while(top>0){ `@RTfBBg
int j=stack[top--]; _->d41
int i=stack[top--]; a0~LZQ?
.r4*?>
pivotIndex=(i+j)/2; 0
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pivot=data[pivotIndex]; ]v=A}}kS
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SortUtil.swap(data,pivotIndex,j); 4S5U|n
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file://partition @P@?KZ..v!
l=i-1; PKJ w%.-
r=j; dSkM A
do{ \I( g70
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;X , A|m$(
SortUtil.swap(data,l,r); 8MU+i%hd
} lxf+$Z`~:
while(l SortUtil.swap(data,l,r); *lc|iq\
SortUtil.swap(data,l,j); LtW}R4}3
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if((l-i)>THRESHOLD){ W^k95%zBM
stack[++top]=i; 7_HFQT1.N
stack[++top]=l-1; ^VOFkUp)
} H}?"2jF
if((j-l)>THRESHOLD){ id+ ~ V
stack[++top]=l+1; ?k@^U9?R
stack[++top]=j; Qco8m4n
} F$M^}vsjGx
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} |0OY>5
file://new InsertSort().sort(data); HAwdu1$8
insertSort(data); 5X&Y~w,poU
} 2u Zb2O
/** a@!(o )>
* @param data o, PpD,,
*/ z9Z4MXl
private void insertSort(int[] data) { \(_(pcl
int temp; /*P) C'_M
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2ci[L:U
} z.lIlp2:
} =U'!<w<-
} 9k/L m
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} B`|f"+.
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归并排序: f*}}Az.4
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package org.rut.util.algorithm.support; xqs ,4bcbY
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import org.rut.util.algorithm.SortUtil; !#d5hjoX
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/** 8yk7d76Y
* @author treeroot 1_WP\@O
* @since 2006-2-2 {8>g?4Q#
* @version 1.0 _iu~vU)r
*/ y4U|~\]
public class MergeSort implements SortUtil.Sort{ >
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/* (non-Javadoc) oR7[[H.4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,?P< =M
*/ G 9|2
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public void sort(int[] data) { _o[fjd
int[] temp=new int[data.length]; pT{is.RM
mergeSort(data,temp,0,data.length-1); :{+~i.*
} p4V* %A&w
|sd G<+
private void mergeSort(int[] data,int[] temp,int l,int r){ 47N,jVt4
int mid=(l+r)/2; Om^(CAp
if(l==r) return ; nrHC;R.nE
mergeSort(data,temp,l,mid); aq)g&.dw?
mergeSort(data,temp,mid+1,r); DkX^b:D*f
for(int i=l;i<=r;i++){ s_ t/
temp=data; C~egF=w
} ? X6M8`
int i1=l; fLnwA|n=
int i2=mid+1; O}>@G
for(int cur=l;cur<=r;cur++){ l^Ob60)2
if(i1==mid+1) 793 15A
data[cur]=temp[i2++]; ^s6}[LDW>@
else if(i2>r) }4N'as/ZO
data[cur]=temp[i1++]; 8OKG@hc
else if(temp[i1] data[cur]=temp[i1++]; "4\k1H"_
else ^D<CoxG
data[cur]=temp[i2++]; L&c
&
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} /{f"0]-RA
} T%%
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} }4p)UX>aWT
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改进后的归并排序: ]!ox2m_U
VwpC UW
package org.rut.util.algorithm.support; ?r KbL^2
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import org.rut.util.algorithm.SortUtil; d7Vp^^}(
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/** 1~t.2eU G
* @author treeroot ]XU4nNi
* @since 2006-2-2 8T1zL.u>q
* @version 1.0 VcGl8~#9
*/ >ei~:z]R
public class ImprovedMergeSort implements SortUtil.Sort { gUNhN1=
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private static final int THRESHOLD = 10; Pr1qX5> =
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/* T?Kh'
* (non-Javadoc) t5%cpkgh4
* <4+P37^~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T:u>7?8o
*/ s]%Cz \
public void sort(int[] data) { f[1cN`|z
int[] temp=new int[data.length]; yAfwQ$Ll7
mergeSort(data,temp,0,data.length-1); q[_qZ
} r[4n2Mys
0u1ZU4+EC
private void mergeSort(int[] data, int[] temp, int l, int r) { QuqznYSY{
int i, j, k; }%p:Xv@X!
int mid = (l + r) / 2; I%u 2 ce
if (l == r) -Y@tx fu-
return; 9Q=VRH:
if ((mid - l) >= THRESHOLD) @oE
5JM
mergeSort(data, temp, l, mid); O`c+y
else RI@\cJ\}
insertSort(data, l, mid - l + 1); T/\RViG3
if ((r - mid) > THRESHOLD) y QClq{A
mergeSort(data, temp, mid + 1, r); x>}ml\R
else =nHKTB>
insertSort(data, mid + 1, r - mid); [02rs@c>
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for (i = l; i <= mid; i++) { <Cv(@A->
temp = data; [K&%l]P7
} [
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for (j = 1; j <= r - mid; j++) { JcWp14~e
temp[r - j + 1] = data[j + mid]; 4d`YZNvZW/
} qFD ZD)K
int a = temp[l]; 3Rc*vVnI
int b = temp[r]; )[ A-d(y=
for (i = l, j = r, k = l; k <= r; k++) { d
#1Y^3n
if (a < b) { H"FK(N\
data[k] = temp[i++]; *{3d+j/?/
a = temp; lG)wa
} else { \P*_zd@%
data[k] = temp[j--]; QkBw59L7
b = temp[j]; E
+_n@t"
} <%m YsaM
} +b(};(wL
} zbmC?2$
Z+&V >
/** +P^
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* @param data #73pryXV
* @param l {1)A"lQu
* @param i w}gmVJ#p
*/ =0pt-FQ
private void insertSort(int[] data, int start, int len) { h+}BtKA
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /~Y\KOH|
} r,Uk)xa/^
} O;H6`JQ
} ysz =Xw
} =#2c
r:1
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堆排序: 6nZ]y&$G-k
Ipk;Nq
package org.rut.util.algorithm.support; S MWXP
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import org.rut.util.algorithm.SortUtil; 5MVa;m
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/** 3>KEl^1DB
* @author treeroot c_3B: F7
* @since 2006-2-2 S@/{34,
* @version 1.0 WO_Uc_R
*/ /W/e%.
public class HeapSort implements SortUtil.Sort{ jVQy{8{G
IMkE~0x4</
/* (non-Javadoc) }|.<EkA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |-Uh3WUE6
*/ YNr"]SA@ ;
public void sort(int[] data) { B&]`OO>O
MaxHeap h=new MaxHeap(); M7TLQqaF
h.init(data); 2!{D~Gfl=
for(int i=0;i h.remove(); fB8, )&
System.arraycopy(h.queue,1,data,0,data.length); !;eE7xn &
} L,}'ST
g'7E6n"!,
private static class MaxHeap{ +>"s)R43
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void init(int[] data){ XwY,xg&o
this.queue=new int[data.length+1]; jr=9.=jI8k
for(int i=0;i queue[++size]=data; &DLWlMGq
fixUp(size); dH y9
wU
} wXIRn?z
} B*Tn@t W
)[ V8YiyU
private int size=0; Fw 0m(7
{DRk{>K,
private int[] queue; *?FVLE
.d<K` .O;
public int get() { tF:AnNp=
return queue[1]; (BEe^]f
} YvJFZ_faX
lq-KM8j
public void remove() { WXy8<?s
SortUtil.swap(queue,1,size--); ~*HQPp?v
fixDown(1); w"j>^#8
} |V a:*3u
file://fixdown 'Aq^z%|
private void fixDown(int k) { @G4Z
int j; ], lLDUZ\
while ((j = k << 1) <= size) { C%z)D1-
if (j < size %26amp;%26amp; queue[j] j++; Tqt-zX|>
if (queue[k]>queue[j]) file://不用交换 "w:h
break; !"N,w9MbD
SortUtil.swap(queue,j,k); /6')B !&
k = j; ,"EaZ/Bl/
} 2lTt
} }J# HIE\RG
private void fixUp(int k) { ]l,D,d81
while (k > 1) { "^#O7.oVi+
int j = k >> 1; "`qk}n-
if (queue[j]>queue[k]) P~j#8cH7
break; Bgxk>Y
SortUtil.swap(queue,j,k); S2$66xr#
k = j; {KG}m'lx
} #
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} 7m2iL#5[
1#vu)a1+b
} 2Re8rcQQU
#Zdh<.
} o%_-u
+
/HdXJL9B
SortUtil: 1dN/H)]
r8EJ@pOF2w
package org.rut.util.algorithm; @Tu`0=8
" .7@
import org.rut.util.algorithm.support.BubbleSort; cfTT7O#Dc
import org.rut.util.algorithm.support.HeapSort; y\??cjWb]
import org.rut.util.algorithm.support.ImprovedMergeSort; |/Vq{gxp+
import org.rut.util.algorithm.support.ImprovedQuickSort; eKiDc=@
import org.rut.util.algorithm.support.InsertSort; U1YqyG8
import org.rut.util.algorithm.support.MergeSort; .RroO_H
import org.rut.util.algorithm.support.QuickSort; 7h\is
import org.rut.util.algorithm.support.SelectionSort; "Hw%@]#
import org.rut.util.algorithm.support.ShellSort; RdX+:!lD
NfoHQU<n
/** MSCH6R"5
* @author treeroot \l/(L5gY
* @since 2006-2-2 d:'{h"M6
* @version 1.0 *$A`+D9
*/ aT,WXW*
public class SortUtil { q /JC\
public final static int INSERT = 1; 9C7Npf?~M
public final static int BUBBLE = 2; R>bg3j
public final static int SELECTION = 3; Bl+\|[yd
public final static int SHELL = 4; uuM1_nD[
public final static int QUICK = 5; sVh)Ofn
public final static int IMPROVED_QUICK = 6; OLx;j+p
public final static int MERGE = 7; }ILBX4c
public final static int IMPROVED_MERGE = 8; 2hHRitt36
public final static int HEAP = 9;
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u+~)
tR!C8:u
public static void sort(int[] data) { |>ztx}\
sort(data, IMPROVED_QUICK); )<QX2~m<
} ~>@~U]
private static String[] name={ -8)Hulo/{U
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ef'kG"1
}; [[[C`H@
2bCfY\k
private static Sort[] impl=new Sort[]{ hJSvx
new InsertSort(), .i;.5)shsu
new BubbleSort(), Z66Xj-o
new SelectionSort(), 3HyOQD"{
new ShellSort(), QvbH " 7
new QuickSort(), "}X+vd``
new ImprovedQuickSort(), vd%AV(]<LJ
new MergeSort(), "nz\YQdg
new ImprovedMergeSort(), r5gqRh}+
new HeapSort() '-"[>`[q
}; Z`kVyuQ
g%J\YRo
public static String toString(int algorithm){ 9,8/DW.K
return name[algorithm-1]; FRxR/3&
} d./R;Z- I{
@;O"-7Kk
public static void sort(int[] data, int algorithm) { ?GX@&_
impl[algorithm-1].sort(data); :i{M1z I
} ;gL{*gR]S
mX>N1zAz
public static interface Sort { fgqCX:SWz
public void sort(int[] data); }k.yLcXM
} 6"_pCkn;c<
1L`V{\_0s
public static void swap(int[] data, int i, int j) { @v`.^L{P
int temp = data; ViW2q"4=
data = data[j]; ]U#of O
data[j] = temp; )"?'~ 5A
} w<~[ad}
} <zpxodM@T