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。 e>^R 8qM?
插入排序: kMo)4Xp
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package org.rut.util.algorithm.support; $!f$R`R^Q\
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import org.rut.util.algorithm.SortUtil; }rE|\p>
/** GEA;9TU|V
* @author treeroot M($},xAvDU
* @since 2006-2-2 >
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* @version 1.0 (`NRF6'&1L
*/ [jw o D
public class InsertSort implements SortUtil.Sort{ ;Ki1nq5c#s
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/* (non-Javadoc) 54{"ni2a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cg
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*/ |- fx
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public void sort(int[] data) { fh^_=R(/
int temp; O2G+
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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); 5dF=DCZ
} ,7(/Il9
} `O{Uz?#*x
} $-RhCnE
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} *K(xES!b
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冒泡排序: .{-yveE
M9K).P=
package org.rut.util.algorithm.support; ~30Wb9eL
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import org.rut.util.algorithm.SortUtil; iV5I
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/** *eP4dGe&
* @author treeroot o zYI/b^
* @since 2006-2-2 Pb,^UFa=
* @version 1.0 >{S $0D
*/ =oME~oB~
public class BubbleSort implements SortUtil.Sort{ S;'eoqN8
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/* (non-Javadoc) Ic
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LXLDu2/@
*/ 2YKM9Ks
public void sort(int[] data) { 7gwZ9Fob
int temp; 1l_}O1
for(int i=0;i for(int j=data.length-1;j>i;j--){ -G;1U
if(data[j] SortUtil.swap(data,j,j-1); ,#T3OA!c**
} F4x7;?W{*
} FW DuH`-5
} O+?zn:
} %7#Zb '
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}
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选择排序: 3kCbD=yF
Y14R"*t~
package org.rut.util.algorithm.support; {1aAm+
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import org.rut.util.algorithm.SortUtil; >!1 f`
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/** a*j <TR
* @author treeroot j9}0jC2Tb
* @since 2006-2-2 NE3wui1 V
* @version 1.0 p*,P%tX
*/
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public class SelectionSort implements SortUtil.Sort { RRqMwy>%
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/* Wk?|BR]O
* (non-Javadoc) Vb^s 'k
* 4i/q^;`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0>=)
*/ #2jn4>
public void sort(int[] data) { *\KMkx
int temp; <IyLLQ+v
for (int i = 0; i < data.length; i++) { w3qf7{b
int lowIndex = i; rA,Y_1b *
for (int j = data.length - 1; j > i; j--) { d7J[.^\
if (data[j] < data[lowIndex]) { @>2rz
lowIndex = j; V6MT> T
} 93IOG{OAY
} 4AOS}@~W
SortUtil.swap(data,i,lowIndex); U;{,lS2l
} MQ(/l_=zQ
} W 8$=a
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} B"m:<@ "
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Shell排序: O2]r]9sh*
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package org.rut.util.algorithm.support; ;b?+:L
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import org.rut.util.algorithm.SortUtil; P9"D[uz
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/** Kn#xY3W6
* @author treeroot CS5jJi"pD3
* @since 2006-2-2 {]\uR-a(o
* @version 1.0 3Ge <G
*/ AKKU-5
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public class ShellSort implements SortUtil.Sort{ C.eV|rc@T
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/* (non-Javadoc) 1LE^dS^V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e4qk>Cw
*/ ~5 pC$SC6>
public void sort(int[] data) { #/t>}lc
for(int i=data.length/2;i>2;i/=2){ 92aDHECo
for(int j=0;j insertSort(data,j,i); 4 uy @ {
} 9Ir~X|}\iL
} y-<PsP-I
insertSort(data,0,1); B:- KZuO
} KPjqw{gR_R
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dl
/** e0N=2i?I#z
* @param data #4_O;]{'
* @param j 7tl)4A6
* @param i k]$E8[.t
*/ 9hR:y.
private void insertSort(int[] data, int start, int inc) { K~Au?\{
int temp; r,.95@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); J;=aIiN]R
} av;
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} )_b@~fC
} '5xuT _
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} $qlqWy-s
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快速排序: ?%dCU~ z
bpF@}#fT
package org.rut.util.algorithm.support; |T$a+lHMD
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import org.rut.util.algorithm.SortUtil; D;^ZWz0
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/** b*FU*)<4.
* @author treeroot SEQO2`]e:
* @since 2006-2-2 bm tJU3Rm
* @version 1.0 ?mYV\kDt\
*/ j |'#5H`
public class QuickSort implements SortUtil.Sort{ @%G' U&R{
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/* (non-Javadoc) SJ@8[n.x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7:VEM;[d
*/ Xw*%3'
public void sort(int[] data) { ;ad9{":J#B
quickSort(data,0,data.length-1); 4('0f:9z+
} GwMUIevO_
private void quickSort(int[] data,int i,int j){ .}$`+h8WT
int pivotIndex=(i+j)/2; +2V%'{:
file://swap \}u7T[R=`
SortUtil.swap(data,pivotIndex,j); Owh*KY:
igRDt{}
int k=partition(data,i-1,j,data[j]); !8
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SortUtil.swap(data,k,j); SA`J.4yn
if((k-i)>1) quickSort(data,i,k-1); } `>J6y9
if((j-k)>1) quickSort(data,k+1,j); ,WO%L~db
t7*G91Hoq&
} mq{$9@3
/** )WP]{ W)r
* @param data >uyeI&z
* @param i c69U1
* @param j r?"}@MRW
* @return 1&8j3"
*/ l${Hgn+
private int partition(int[] data, int l, int r,int pivot) { h=v[i!U-eY
do{ [NCXn>Z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
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SortUtil.swap(data,l,r); s]F?=yEp
} iJCY /*C}
while(l SortUtil.swap(data,l,r); vGPf`2/j.
return l; K'iS#i7
} bG5^h
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"
} EBj,pk5M
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改进后的快速排序: rSF;Lp)}
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package org.rut.util.algorithm.support; /^z/]!JG:V
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import org.rut.util.algorithm.SortUtil; 'FPcAW^8
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/** vu_>U({.
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* @author treeroot =A0"0D{\
* @since 2006-2-2 @sB}q 6>
* @version 1.0 Qb6QXjN
Q
*/ ?;:9
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public class ImprovedQuickSort implements SortUtil.Sort { vk4C_8m
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private static int MAX_STACK_SIZE=4096; d5w_[=9U
private static int THRESHOLD=10; DqurHQ z)m
/* (non-Javadoc) Ad}-I%Ie
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .^[fG59
*/ Jo7fxWO_g
public void sort(int[] data) { DU/9/ I?~
int[] stack=new int[MAX_STACK_SIZE]; 2_oK5*j
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int top=-1; 5(iSOsb
int pivot; lQp89*b?=U
int pivotIndex,l,r; AND7jEn
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stack[++top]=0; dT0^-XSY
stack[++top]=data.length-1; vWqyZ-p,q
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while(top>0){ 2p$n*|T&c
int j=stack[top--]; \yJZvhUk
int i=stack[top--]; @ 7Q*h
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pivotIndex=(i+j)/2; 3JlC/v#0
pivot=data[pivotIndex]; T =eT^?v
?VMi!-POE
SortUtil.swap(data,pivotIndex,j); G zJ9N`
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file://partition q5:0&:m$4$
l=i-1; wo7N7R5
r=j; AI^AK0.L
do{ oTq%wi6 _
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ILkjz^
SortUtil.swap(data,l,r); }
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} ')AByD}Hi]
while(l SortUtil.swap(data,l,r); _%A/ )
SortUtil.swap(data,l,j); '\ph`Run
8_^'(]
if((l-i)>THRESHOLD){ uD.
stack[++top]=i; >Jm-2W5J
stack[++top]=l-1; iN:G/ss4O
}
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if((j-l)>THRESHOLD){ '`M#UuU
stack[++top]=l+1; -{yDk$"
stack[++top]=j; DHh+%|e
} SBCL1aM
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} |Q5H9<*
file://new InsertSort().sort(data); k9*J*7l-m
insertSort(data); g)=V#Bglv
} 4'+d"Ok
/** T4V[RN
* @param data 96.IuwL*.s
*/ SjZd0H0
private void insertSort(int[] data) { 3gxf~$)?
int temp;
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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); K:}h\ In
} (A7T}znG
} *)j@G:
} <ldid]o
#
v
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} .Lr`j8
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归并排序: r :fwrC
&M0o&C-1/
package org.rut.util.algorithm.support; Q;XXgX#l
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import org.rut.util.algorithm.SortUtil; #[no~&E
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/** )v${&H
* @author treeroot '4J&Gp x
* @since 2006-2-2 B*9
* @version 1.0 fswZM\@
*/ Eem 2qKj
public class MergeSort implements SortUtil.Sort{ Ix( 6
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/* (non-Javadoc) =^BqWC2~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o8w-$
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*/ Nawp t%
public void sort(int[] data) { $@_YdZ!
int[] temp=new int[data.length]; l0gH(28K
mergeSort(data,temp,0,data.length-1); 6tOP}X
} n
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private void mergeSort(int[] data,int[] temp,int l,int r){ QH& %mr.S
int mid=(l+r)/2; qsI{ b<n
if(l==r) return ; |!$ Q<-]f
mergeSort(data,temp,l,mid); p])D)FsMB
mergeSort(data,temp,mid+1,r); {&u Rd?(
for(int i=l;i<=r;i++){ M#=Y~PU
temp=data; I|$'Q$m~
} WEno+Z~=1'
int i1=l; %0NL Rfp
int i2=mid+1; ;])I>BT[
for(int cur=l;cur<=r;cur++){ dz8-):
if(i1==mid+1) Bfbl#ZkyL
data[cur]=temp[i2++]; x*:n4FZ7b
else if(i2>r) P1dN32H
o
data[cur]=temp[i1++]; !?yxh/>lM
else if(temp[i1] data[cur]=temp[i1++]; ^%-NPo<
else G=vN;e_$_b
data[cur]=temp[i2++]; g<M0|eX@~
} eT;AAGql
} 1UC2zM"
6(:)otz
}
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改进后的归并排序: |p;4dL
fwRGT|":B
package org.rut.util.algorithm.support; [0K=I64
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import org.rut.util.algorithm.SortUtil; QxKAXq@)i
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/**
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* @author treeroot ;9K[~
* @since 2006-2-2 IoQr+:_R
* @version 1.0 yU> T8oFh
*/ &Y 'z?N
public class ImprovedMergeSort implements SortUtil.Sort { AlUJ1^o)
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private static final int THRESHOLD = 10; Xe)Pg)J1
r~I.F!{
/* KUbJe)}g
* (non-Javadoc) OE6#YT
* P;jlHZ 9?O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y*_K=}pk
*/ RTA%hCr!
public void sort(int[] data) { C:Vv!u
int[] temp=new int[data.length]; yj>){NcX
mergeSort(data,temp,0,data.length-1); P1$f}K}
} M\I_{Q?_
fH&zR#T7U4
private void mergeSort(int[] data, int[] temp, int l, int r) { |n)<4%i8J
int i, j, k; OthG7+eF
int mid = (l + r) / 2; dZF8R
if (l == r) 'HCnB]1
return; D^$]>-^
if ((mid - l) >= THRESHOLD) S=4R5igrC
mergeSort(data, temp, l, mid); V_jiOT!
else +5#x6[
insertSort(data, l, mid - l + 1); !TGr .R
if ((r - mid) > THRESHOLD) P?xA$_+
mergeSort(data, temp, mid + 1, r); U8E0~[y'
else *jGPGnSo
insertSort(data, mid + 1, r - mid); (yfXMp,x
]XY0c6
<
for (i = l; i <= mid; i++) { P>|Ef~j
temp = data; D$ ej+s7
} OqtQA#uL
for (j = 1; j <= r - mid; j++) { )q^(T1
temp[r - j + 1] = data[j + mid]; 0Qt~K#mr/
} iW'_R{)T
int a = temp[l]; #T[%6(QW
int b = temp[r]; L+7*NaPY*
for (i = l, j = r, k = l; k <= r; k++) { 7$K}qsr<
if (a < b) { R \ia6
data[k] = temp[i++]; ,eDu$8J9
a = temp; <H!O:Mf_p
} else { ~bWhth2*
data[k] = temp[j--]; JXL'\De ;
b = temp[j]; m!;G/s*
} ;>5,
} R<>tDwsZGa
} z[*zuo
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/** G<|:605
* @param data 7O"hiDQ
* @param l ("b*? : B
* @param i %Or2iuO%-,
*/ _nP)uU$
private void insertSort(int[] data, int start, int len) { w\p9J0
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); DDWp4`CS|
} [Q|M/|mnR1
} 9Kx<\)-GMD
} *G\=i
A
} X`D+jiQ(f
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堆排序: PF m\[2
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package org.rut.util.algorithm.support; g(nK$,c
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import org.rut.util.algorithm.SortUtil; f'i6QMk\&
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/** n? }5!
* @author treeroot jK e.gA
* @since 2006-2-2 _%;M9Sg3
* @version 1.0 3h LqAj
*/ 72u db^
public class HeapSort implements SortUtil.Sort{ v:?o3
S
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/* (non-Javadoc) xuF5/(__
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g[AA,@p+
*/ j!7Qw 8
public void sort(int[] data) { 1!d)PK>1$
MaxHeap h=new MaxHeap(); VJ*\pM@no
h.init(data); $3]b>v
for(int i=0;i h.remove(); t GC2
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System.arraycopy(h.queue,1,data,0,data.length); Tn /Ut}]O
} Ms,@t^nk
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private static class MaxHeap{ lAz2%s{6
Psp^@
void init(int[] data){ .N!{ U
this.queue=new int[data.length+1]; 6W$rY] h!
for(int i=0;i queue[++size]=data; [1Uz_HY["3
fixUp(size); Ajg\aof0{
} uS&LG#a
} 0`6),R'x
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private int size=0; 1g~y]iQ
A*R n<{U
private int[] queue; o _(0
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public int get() { <&6u]uKrW
return queue[1]; D,E$_0
} 4QO/ff[ o
$e*B:}x}
public void remove() { k8
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SortUtil.swap(queue,1,size--); m9woredS,
fixDown(1); "Tv:*L5
} `[OXVs,7"
file://fixdown W"|mpxp
private void fixDown(int k) { 8?kP*tmcZ
int j; j3{HkcjJG
while ((j = k << 1) <= size) { mTJ"l(,3
if (j < size %26amp;%26amp; queue[j] j++; 4T%cTH:.9N
if (queue[k]>queue[j]) file://不用交换 3(C :X1
break; _F^$aZt?e
SortUtil.swap(queue,j,k); @UV{:]f~e
k = j; BKX9SL]
} xG8`'SNY
} 6< >SHw
private void fixUp(int k) { *%I[ ke *
while (k > 1) { 4~Dax)
int j = k >> 1; L_k9g12
if (queue[j]>queue[k]) |Q5+l.%
break; K\aAM;)-
SortUtil.swap(queue,j,k); JN|VPvjE
k = j; M7vj^mt?
} N ocFvF7\
} S~> 5INud
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} #)`\!)?
26 ?23J
;
} Dp`HeSKU^
*Q5x1!#z#
SortUtil: Z}+yI,
6"+8M 3M l
package org.rut.util.algorithm; /BT1oWi1y
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c$D*
import org.rut.util.algorithm.support.BubbleSort; <wa(xDBw
import org.rut.util.algorithm.support.HeapSort; `36N
n+A
import org.rut.util.algorithm.support.ImprovedMergeSort; k2.G%]j
import org.rut.util.algorithm.support.ImprovedQuickSort; <6R"h-u"
import org.rut.util.algorithm.support.InsertSort; R1/q3x
import org.rut.util.algorithm.support.MergeSort; GG+5/hU
import org.rut.util.algorithm.support.QuickSort; xDUaHE1co
import org.rut.util.algorithm.support.SelectionSort; P5Dk63z]
import org.rut.util.algorithm.support.ShellSort; AEqq1A
7`dY 1.rq
/** B=dseeG[To
* @author treeroot as#J qE
* @since 2006-2-2 {+Sq<J_`M
* @version 1.0 t!0dJud
*/ tt{`\1q
public class SortUtil { C\A49q
public final static int INSERT = 1; ,T{oy:rB
public final static int BUBBLE = 2; a,cC!
public final static int SELECTION = 3; ~&KX-AC@
public final static int SHELL = 4; '?8Tx&}U8
public final static int QUICK = 5; # 66e@
public final static int IMPROVED_QUICK = 6; >XnO&hW
public final static int MERGE = 7; Um\0i;7 ~4
public final static int IMPROVED_MERGE = 8; 8YKQItK
public final static int HEAP = 9; ~#Aa Ldq
r)8z#W>s
public static void sort(int[] data) { "xn|zB
sort(data, IMPROVED_QUICK); LABNj{=D!
} :Y^I]`lR"
private static String[] name={ ]u0Jd#@
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" d;44;*D
}; a:b^!H>#
M(2`2-/xh
private static Sort[] impl=new Sort[]{ mW +tV1XjG
new InsertSort(), .8(%4ejJ(
new BubbleSort(), !F$R+A+L
new SelectionSort(), ^yJ:+m;6K
new ShellSort(), vI|As+`$d
new QuickSort(), ESv:1o`?n
new ImprovedQuickSort(), L/fRF"V
new MergeSort(), VaJfD1zd1
new ImprovedMergeSort(), Onw24&
new HeapSort() ]Uh1l.O
}; ="dDA/,$VS
c&m9)r~zP
public static String toString(int algorithm){ Jn#K0(FQ
return name[algorithm-1]; ]
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} lkwh'@s.
{g_@Tuu
public static void sort(int[] data, int algorithm) { .`J:xL%Z
impl[algorithm-1].sort(data); GO~k '
} gl
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N,|r1u 9X#
public static interface Sort { A?,A(-0C
public void sort(int[] data); $:;%bjSI
} l[*sHi
rN#\AN
public static void swap(int[] data, int i, int j) { a:}E& ,&M
int temp = data; j3 P$@<
data = data[j]; eM }W6vIn
data[j] = temp; ?bI?GvSh
} J3IRP/*z
} !Rqx2Q