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。 4PkKL/E
插入排序: UWK|_RT6SA
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package org.rut.util.algorithm.support; ]%FP*YU4O
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import org.rut.util.algorithm.SortUtil; dxH\H?NO
/** x(4"!#
* @author treeroot V[WLS ?-)
* @since 2006-2-2 b353+7"|
* @version 1.0 C~"UOFX
*/ 2i
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public class InsertSort implements SortUtil.Sort{ ~F-lO1
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/* (non-Javadoc) cu'( Hj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G)M! ,
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*/ HD2C^V2@M
public void sort(int[] data) { 2Qh)/=8lM
int temp; -Lb7=98
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _g( aO70Zu
} Yo=$@~vN]
} jENC1T(
} g>w {{G
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} )UTjP/\gN
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冒泡排序: _Ex<VF u
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package org.rut.util.algorithm.support; 3hje
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import org.rut.util.algorithm.SortUtil; 'jO8C2Th%
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/** JRZp'Ln
* @author treeroot D]rYg'
* @since 2006-2-2 bAN>\zG+
* @version 1.0 4`fV_H.8
*/ k'PvQl"I
public class BubbleSort implements SortUtil.Sort{ a^E>LJL
$/5\Hg1
/* (non-Javadoc) eOkiB!G.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;T8(byH ?
*/ S#He OPRL
public void sort(int[] data) { i "X" -)#
int temp; #3{}(T7
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~x+'-2A46
if(data[j] SortUtil.swap(data,j,j-1); wJp1Fl~
} I|>.&nb
} a~LdcUYs
} ST~YO
} pFZ$z?lI
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} 7N@[Rtv
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选择排序: [wiB1{/Ls.
UL#:!J/34
package org.rut.util.algorithm.support; 2Oyw#1tdn
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import org.rut.util.algorithm.SortUtil; 1@|%{c&+9
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/** ZU`~@.`i
* @author treeroot BYHyqpP9
* @since 2006-2-2 GM1.pVb
* @version 1.0 t%5bDdo
*/ [e@m-/B
public class SelectionSort implements SortUtil.Sort { &(l.jgqg&
in,0(I&I
/* )'e1@CR
* (non-Javadoc) wq!9wk9
* $sg- P|Wo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tX@y ]"
*/ _T~&kwe
public void sort(int[] data) { VAUd^6Xdwx
int temp; I>vU;xV\m
for (int i = 0; i < data.length; i++) { 0dS (g&ZR
int lowIndex = i; ?m7i7Dz
for (int j = data.length - 1; j > i; j--) { 2G!z/OAj
if (data[j] < data[lowIndex]) { H"k\(SPVS
lowIndex = j; 4g}r+!T
} 92.Rjz;=9?
} &y|Ps eH"
SortUtil.swap(data,i,lowIndex); 8g-Z~~0W1
} v<)&JlR
} C.LAr~P
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} {D(l#;,iX2
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Shell排序: MtF0/aT
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package org.rut.util.algorithm.support; qwnVtD
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import org.rut.util.algorithm.SortUtil; ZGI<L
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/** s'l|Ii
* @author treeroot \w1',"l`
* @since 2006-2-2 !wfUD2K1
* @version 1.0 .f;@OqU
*/ %H&WihQ
public class ShellSort implements SortUtil.Sort{ =_g#I
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/* (non-Javadoc) #902x*Z'c"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R+e)TR7+
*/ /L@o.[H
public void sort(int[] data) { re#]zc<
for(int i=data.length/2;i>2;i/=2){ =A{'57yP
for(int j=0;j insertSort(data,j,i); ahCwA}
} fkX86
} iS<1C`%>
insertSort(data,0,1); 02%~HBS
} iycceZ
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/** m$(OQ,E
* @param data Mw-L?j0o[k
* @param j W?P4oKsql*
* @param i 4${3e
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*/ DTo"{!
private void insertSort(int[] data, int start, int inc) { wL>*WLfR
int temp; #2:?N8vz*
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #Z
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} 5WxNH}{
} iyr8*L\
} 99By.+~pX
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} /38I(0
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快速排序: n_LK8
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package org.rut.util.algorithm.support; ZU.E}Rn:
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import org.rut.util.algorithm.SortUtil; qvGmJN0
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/** ZF#n(Y?
* @author treeroot 'Z9UqEGV
* @since 2006-2-2 |JWYsqJ0U
* @version 1.0 n
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*/ Oj_F1.
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public class QuickSort implements SortUtil.Sort{ DrAIQ7Jd
pr4y*!|Y$
/* (non-Javadoc) -a~n_Z>_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,D(Bg9C
*/ q(hBqU W
public void sort(int[] data) { 9kqR-T|Q
quickSort(data,0,data.length-1); \dE{[^.5
} OK`^DIr5l
private void quickSort(int[] data,int i,int j){ PvjZoF["
int pivotIndex=(i+j)/2; Pec Zuv
file://swap UGgo;e
SortUtil.swap(data,pivotIndex,j); KC2Z@
8'TIDu
int k=partition(data,i-1,j,data[j]); -wl&~}%M
SortUtil.swap(data,k,j); )t7MD(
if((k-i)>1) quickSort(data,i,k-1); eX}aa0
if((j-k)>1) quickSort(data,k+1,j); '/0e!x/8
"zTy_0[;
} h&d"| <
/** gp $Rf9\
* @param data xt"-Jmox
* @param i u(f;4`
* @param j +|pYu<OY
* @return gae=+@z
*/ 5T( cy
private int partition(int[] data, int l, int r,int pivot) { #6[F&
do{ p8YOow7)
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Ik5V?
SortUtil.swap(data,l,r); Lr6C@pI
} c{?SFwgd
while(l SortUtil.swap(data,l,r); 2$!,$J-<Y
return l; es%py~m)
} S<'_{u z
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} 3c wBPqH
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改进后的快速排序: a$^)~2U{
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package org.rut.util.algorithm.support; 2Kr>93O
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import org.rut.util.algorithm.SortUtil; HUCJA-OZGL
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/** d^!3&y&
* @author treeroot 5_L,7\5#
* @since 2006-2-2 vZ$E
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* @version 1.0 FyPG5-
*/ qIQ
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public class ImprovedQuickSort implements SortUtil.Sort { VQG$$McJ
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private static int MAX_STACK_SIZE=4096; YPY,gR
private static int THRESHOLD=10; 7j&EQm5\9
/* (non-Javadoc) uW#s;1H.)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hm0A%Js
*/ I} +up,B]o
public void sort(int[] data) { Y TY(Et1i
int[] stack=new int[MAX_STACK_SIZE]; jA^Dk$
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int top=-1; ;C:|m7|
int pivot; a'Zw^g
int pivotIndex,l,r; Wc!]X.|9*
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stack[++top]=0; .q4$)8[Pg
stack[++top]=data.length-1; 9Hb|$/FD
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while(top>0){ (pP.*`JRv
int j=stack[top--]; j)YX=r;xM
int i=stack[top--]; S-~)|7d.
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pivotIndex=(i+j)/2; o:3(J}
pivot=data[pivotIndex]; vx' ] ;
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SortUtil.swap(data,pivotIndex,j); `VUJW]wGu
2 @T~VRy
file://partition R2C~.d_TDu
l=i-1; 5VQ-D`kE+
r=j; H8dS]N~[Y
do{ :i0;jWcb
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W+U0Y,N6
SortUtil.swap(data,l,r); }gt)cOaY
} g"m9[R=]6
while(l SortUtil.swap(data,l,r); &HAu;u@
SortUtil.swap(data,l,j); JXq!v:w6
~jHuJ`]DF
if((l-i)>THRESHOLD){ N81M9#,["~
stack[++top]=i; I^u~r.
stack[++top]=l-1; Kr1Y3[iNv
} oz,.gP%
if((j-l)>THRESHOLD){ l Ib
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stack[++top]=l+1; !]D`|HoW
stack[++top]=j; UQ7]hX9
} In1n.oRFn^
-KfK~P3PF
} 4e AMb
file://new InsertSort().sort(data); >b=."i
insertSort(data); j&Xx{ 4v
} h*!oHS~/l
/** >G%oWRk
* @param data =mPe
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*/ )X|)X,~+-
private void insertSort(int[] data) { wF% RM$
int temp; fc<y(uX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3"v>y]$U
} ']I!1>v$[
} K{`R`SXD
} lA1
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} xfI0P0+
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归并排序: 9%NobT
$ xHtI]T
package org.rut.util.algorithm.support; ^E8qI8s
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import org.rut.util.algorithm.SortUtil; OgC,oj,!/
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/** 8-k`"QI=
* @author treeroot ^ +@OiL>&i
* @since 2006-2-2 kN{$-v=K
* @version 1.0 ISK 8t
*/ A?}[rM
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public class MergeSort implements SortUtil.Sort{ P:vp/x!
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/* (non-Javadoc) +WMXd.iN,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yFb"2
*/ 8HJ,6L r;
public void sort(int[] data) { U.I
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int[] temp=new int[data.length]; vyJ8"
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mergeSort(data,temp,0,data.length-1); G8%VL^;O*5
} qhcx\eD:?
DmPsE6G}
private void mergeSort(int[] data,int[] temp,int l,int r){ pOn &D
int mid=(l+r)/2; hxM{}}.E
if(l==r) return ; "M[&4'OM
mergeSort(data,temp,l,mid);
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mergeSort(data,temp,mid+1,r); ]adgOlM
for(int i=l;i<=r;i++){ ry=8Oq&[~
temp=data; L*,h=#x(
} S1Od&v[R
int i1=l; /^k%sG@?
int i2=mid+1; _E'}8.#{
for(int cur=l;cur<=r;cur++){ V]+y*b.60
if(i1==mid+1) Y~{<Hs
data[cur]=temp[i2++]; %g@\SR.
else if(i2>r)
+PADy8
data[cur]=temp[i1++]; %Y=r5'6l
else if(temp[i1] data[cur]=temp[i1++]; |?Edk7`
else 8OV=;aM?{
data[cur]=temp[i2++]; G6W|l2P!
} bfZt <-
} ~]d 9 J
JA9NTu(
} jXALL8[c
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改进后的归并排序: :):vB
3F!)7
package org.rut.util.algorithm.support; *c/V('D/
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import org.rut.util.algorithm.SortUtil; :A @f[Y'9
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/** T$R#d&t
* @author treeroot VV}"zc^
* @since 2006-2-2 f+s)A(?3
* @version 1.0 _D?/$D7u#%
*/ fjy\Q
public class ImprovedMergeSort implements SortUtil.Sort { ]u$tKC
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private static final int THRESHOLD = 10; h4 9q(085V
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/* fiA8W
* (non-Javadoc) x4wTQ$*1
* wEX<[#a-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o
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*/ d-e/0F!
public void sort(int[] data) { G!I5Er0pdy
int[] temp=new int[data.length]; G7+ {O7
mergeSort(data,temp,0,data.length-1); w+*rbJ
} G/},lUzLg
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private void mergeSort(int[] data, int[] temp, int l, int r) { !^98o:"x
int i, j, k;
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int mid = (l + r) / 2; tx9%.)M:n
if (l == r) tKLeq(
return; HpIi- Es7C
if ((mid - l) >= THRESHOLD) ILH[q>
mergeSort(data, temp, l, mid); 5EI"5&`*
else id :
^|
insertSort(data, l, mid - l + 1); 4~$U#$u_
if ((r - mid) > THRESHOLD) ~J+
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mergeSort(data, temp, mid + 1, r); e],(d7 Jo
else RfD#/G3|
insertSort(data, mid + 1, r - mid); t g-(e=S4P
DBcR1c&<H
for (i = l; i <= mid; i++) { +4T.3Njjn
temp = data; F}meKc?a
} hrzxc4,W
for (j = 1; j <= r - mid; j++) { ^OIo
temp[r - j + 1] = data[j + mid]; ^q/^.Gf
} ,P`G IGvkA
int a = temp[l]; ^b|? ?9&
int b = temp[r]; SIR2 Kc0
for (i = l, j = r, k = l; k <= r; k++) { ~p
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if (a < b) { MoEh25U.
data[k] = temp[i++]; Hmhsb2`\
a = temp; Y:m8UnT
} else { z2,NWmP|w
data[k] = temp[j--]; mrG?5.7W
b = temp[j]; w ~crj$UM
} 8?kB+}@6X
} 1pDU}rPJ.
} :R:@V#Y
U"Bge\6x=
/** 8,vP']4r%
* @param data fSVM[
* @param l hslT49m>
* @param i lV4TFt,
*/ r1RM7y
private void insertSort(int[] data, int start, int len) { 2h*aWBLk
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )T
gfd5B
} 7p':a)
} . a @7
} \vc&V8
} ~~k0&mK|Q
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堆排序: cyHbAtl
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package org.rut.util.algorithm.support; U*sQ5uq
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import org.rut.util.algorithm.SortUtil; ebCS4&c
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/** PlA#xnq#
* @author treeroot 8L/XZ)
* @since 2006-2-2 eS
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* @version 1.0 upk_;ae
*/ z~p!7q&g
public class HeapSort implements SortUtil.Sort{ 7^! zT
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/* (non-Javadoc) *,O3@,+>H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9lGa*f)
*/ tlvZy+Blv
public void sort(int[] data) { E2cZk6~m{
MaxHeap h=new MaxHeap(); ZK'WKC
h.init(data); 4s_5>r4
for(int i=0;i h.remove(); 0~WXA=XG
System.arraycopy(h.queue,1,data,0,data.length); ;WYzU`<g
} #sjGju"#_
$kmY[FWu?
private static class MaxHeap{ Rb:?%\=
knV*,
void init(int[] data){ c>/7E-T
this.queue=new int[data.length+1]; '3Fb[md54
for(int i=0;i queue[++size]=data; N:+EGmp
fixUp(size); T5T[$%]6
} T<Zi67QC@
} N z=P1&G'
v<l]K$5J&
private int size=0; AFYdBK]
]S9Z5l0
private int[] queue;
:-hVbS0I
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public int get() { /.A"HGAk
return queue[1]; ZXiJ5BZ
} '
\>k7?@
*tR'K#:&g!
public void remove() { ?/sn"~"
SortUtil.swap(queue,1,size--); UEYJd&n0CB
fixDown(1); C; U4`0=8
} awz.~c++
file://fixdown 7)RvBcM
private void fixDown(int k) { OuWRLcJ!
int j; k_?OEkgUh
while ((j = k << 1) <= size) { | lzcyz
if (j < size %26amp;%26amp; queue[j] j++; a[}?!G-Wt|
if (queue[k]>queue[j]) file://不用交换 +`B^D
break; !a!4^zqp
SortUtil.swap(queue,j,k); {dE(.Z?]!#
k = j; PGYx]r
} +tg${3ti_
} Rm$( X5x>o
private void fixUp(int k) { {o*$|4q4
while (k > 1) { >MRuoJ
int j = k >> 1; r_tt~|s,>
if (queue[j]>queue[k])
4sH?85=j
break; <KCyXU*
SortUtil.swap(queue,j,k); ubVZEsoW?
k = j; M5_t#[ [
} i 2uSPV!Tf
} P;'ZdZ(SLu
u:l<NWF^
} RwrRN+&s\
(./Iq#@S
} 8+Gwv
SDU
SsfC
m C
SortUtil: CMv8n@ry
DZH2U+K
package org.rut.util.algorithm; Hm|N{
P39oHW
import org.rut.util.algorithm.support.BubbleSort; "<)Jso|
import org.rut.util.algorithm.support.HeapSort; o^owv(
import org.rut.util.algorithm.support.ImprovedMergeSort; m&(qr5>b
import org.rut.util.algorithm.support.ImprovedQuickSort; pbWjTI $
import org.rut.util.algorithm.support.InsertSort; jt* B0'Sa
import org.rut.util.algorithm.support.MergeSort; q3K}2g
import org.rut.util.algorithm.support.QuickSort; mC(YO y
import org.rut.util.algorithm.support.SelectionSort; ]\}MSo3
import org.rut.util.algorithm.support.ShellSort; A
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/** }:J-o
* @author treeroot "K+EZ%~<
* @since 2006-2-2 q68m*1?y
* @version 1.0 7<B-2g
*/ d:_;
public class SortUtil { d1
kE)R
public final static int INSERT = 1; ;/+U.I%z
public final static int BUBBLE = 2; f3>DmH#
public final static int SELECTION = 3; U.$Th_
public final static int SHELL = 4; Y5"HKW^
public final static int QUICK = 5; # M!1W5#
public final static int IMPROVED_QUICK = 6; 7+X~i@#rU
public final static int MERGE = 7; 6P,uy;PJ
public final static int IMPROVED_MERGE = 8; N:+d=G`x
public final static int HEAP = 9; `YMd0*
SdnO#J}{
public static void sort(int[] data) { BD^1V(
I/
sort(data, IMPROVED_QUICK); 2vsV:LS.
} m"'`$ /_
private static String[] name={ +~y>22Zfg
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,LmP >Q.
}; ~0?B
6mIK[Qnp
private static Sort[] impl=new Sort[]{ PqF&[M<)
new InsertSort(), /J&DYxl":
new BubbleSort(), [9MbNJt 8~
new SelectionSort(), w
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new ShellSort(), ^7=7V0>,:
new QuickSort(), H5:f&m
new ImprovedQuickSort(), P46Q3EE
new MergeSort(), M1*bT@6
new ImprovedMergeSort(), %9S0!h\
new HeapSort() 2\T\p<_20
}; @tD (<*f+
m_`%#$s}
public static String toString(int algorithm){ 'lu3BQvfh
return name[algorithm-1]; )Z['=+s%
} _G25$%/LU
E7aG&K
public static void sort(int[] data, int algorithm) { n"Bc2}{
impl[algorithm-1].sort(data); :rjfAe=s
} apfr>L3
HTvUt*U1
public static interface Sort { _)~VKA]""
public void sort(int[] data); ?~yJ7~3TS<
} 5wl;fL~e
#5'&
|<
public static void swap(int[] data, int i, int j) { ``6-
int temp = data; Nv6"c<(L=
data = data[j]; <dr2 bz
data[j] = temp; D&~%w!
} Vry_X2
} IvI..#EzG