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。 EJb+yy6
插入排序: A|:+c*7]
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package org.rut.util.algorithm.support; o9]32l
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import org.rut.util.algorithm.SortUtil; r `n|fD.
/** g}gGm[1SUo
* @author treeroot vR2);ywX
* @since 2006-2-2 Dc$q0|N=z
* @version 1.0 Pc< "qy
*/ R9#ar{
public class InsertSort implements SortUtil.Sort{ ~_N,zw{x
z>,M@@
/* (non-Javadoc) d,(q3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dh [kx
*/ V\{@c%xW
public void sort(int[] data) {
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int temp; fHEIys,{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z5(5\j]
} 2y!aXk\#C
}
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} GA[D@Wy
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} <jF&+[*iT
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冒泡排序: bPP@
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package org.rut.util.algorithm.support; A%F8w'8(
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import org.rut.util.algorithm.SortUtil; ly0L)L]\
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/** V4ePYud;^
* @author treeroot n_RZ:<Gr
* @since 2006-2-2 A46q`l9B
* @version 1.0 jdu6P+_8n
*/ lnyq%T[^
public class BubbleSort implements SortUtil.Sort{ 9< 07# 8c.
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/* (non-Javadoc) ht ]n*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q[K$f %>
*/ 3ej237~F,L
public void sort(int[] data) { ]GY8f3~|{
int temp; ~/-SKGzo-
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;nW;M 4{
if(data[j] SortUtil.swap(data,j,j-1); R3lZ|rxv:
} ecz-jZ!
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} Y,Z$U| U
} stUv!
} Ao` e{
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} Oy=0Hsh@x
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选择排序: \i//Aq
8w:mL^6x
package org.rut.util.algorithm.support; mhhc}dS(H
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import org.rut.util.algorithm.SortUtil; 3))R91I
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/** ;7?oJH;
* @author treeroot {S9gOg
* @since 2006-2-2 ,
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* @version 1.0 Ji9o0Y R
*/ $fD%18
public class SelectionSort implements SortUtil.Sort { nKr'cb
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/* wUr(i *
* (non-Javadoc) (UjaL@G
* yGt[Qvx#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sGtxqnX:J
*/ ?;`GCE
public void sort(int[] data) { JcmMbd&B
int temp; v@[3R7|4
for (int i = 0; i < data.length; i++) { \ 9V_[xD+
int lowIndex = i; _[-MyU s
for (int j = data.length - 1; j > i; j--) { ),B/NZ/-
if (data[j] < data[lowIndex]) { ^[m-PS(
lowIndex = j; Eze w@*(
} >"<s7$g
} w/(T
SortUtil.swap(data,i,lowIndex); Nh^I{%.x
} !9$}1_,is
} db_?da;!`
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} {-m e;ayk
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Shell排序: 'R+^+urq^
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package org.rut.util.algorithm.support; 0R\.G1f%
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import org.rut.util.algorithm.SortUtil; ,pTZ/#vP#
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/** X{Vs
* @author treeroot 9H4"=!AAgD
* @since 2006-2-2 i>h3UIx\
* @version 1.0 O^-QqCZE
*/ gTTKjlI[
public class ShellSort implements SortUtil.Sort{ R,PN?aj
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/* (non-Javadoc) w2'z~\dG8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z'k?lkB2i
*/ 7ixG{yu
public void sort(int[] data) { kDmuj>D
for(int i=data.length/2;i>2;i/=2){ R-Lpgi<a"
for(int j=0;j insertSort(data,j,i); F3!@|/<w
} #BBDI
} &0Y
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insertSort(data,0,1); a-,*iK{_u
} @"fv[=Xb
JC~sz^>p\
/** !]uB4
* @param data ]$s)6)kW
* @param j )#\3c,<Y
* @param i 1=IOio4U
*/ HiK+}?I
private void insertSort(int[] data, int start, int inc) { 2Q@na@s
int temp; iExKi1knx
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^J7q,tvbJ
} ['\R4H!x
} <BBzv-?D
} jmq^98jB
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} $X)|`$#pL#
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快速排序: ?OnL,y|
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package org.rut.util.algorithm.support; (NR( )2
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import org.rut.util.algorithm.SortUtil; (_}q>3
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/** DUu:et&c1
* @author treeroot oupWzjo
* @since 2006-2-2 yxpv;v:)=
* @version 1.0 ceks~[rP
*/ o!+'<IQ'
public class QuickSort implements SortUtil.Sort{ xV14Y9
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/* (non-Javadoc) Ucy=I$"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q
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*/ [>p!*%m
public void sort(int[] data) { $0$sDN6)x
quickSort(data,0,data.length-1); :/][ n9J^
}
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private void quickSort(int[] data,int i,int j){ xh#_K@ 8
int pivotIndex=(i+j)/2; Jg'#IM
file://swap 6
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SortUtil.swap(data,pivotIndex,j); PuZzl%i
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int k=partition(data,i-1,j,data[j]); QwFA0
SortUtil.swap(data,k,j); ip'{@1L
if((k-i)>1) quickSort(data,i,k-1); Kg<~Uf=1
if((j-k)>1) quickSort(data,k+1,j); ^hZ0"c
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} [Pp#r&4H
/** *!`&+w
* @param data X{!,j}
* @param i v.:Q& ]
* @param j `/R. 5;$|
* @return Pr%KcR ;
*/ E,?IIRg&
private int partition(int[] data, int l, int r,int pivot) { zpf<!x^
do{ ;
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g6DIWMoO=h
SortUtil.swap(data,l,r); Iy*Q{H3[
} WixEnsJ
while(l SortUtil.swap(data,l,r); \+U;$.)3
return l; 8|i<4>
} c%b|+4
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} :f7!?^;y>
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改进后的快速排序: RJDk7{(
A-myY30
package org.rut.util.algorithm.support; "X?Zw$gRud
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import org.rut.util.algorithm.SortUtil; N,9~J"z
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/** G){+.X4g3
* @author treeroot 9CwtBil<#g
* @since 2006-2-2 M{)eA<6
* @version 1.0 !JDuVqW
*/ #H~$^L
public class ImprovedQuickSort implements SortUtil.Sort { 3''Kg<k,I
j8?! J^TC
private static int MAX_STACK_SIZE=4096; K9ih(fh)
private static int THRESHOLD=10;
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/* (non-Javadoc) +Gy9K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FR'Nzi$
*/ QjpJIw
public void sort(int[] data) { Imzh`SI,
int[] stack=new int[MAX_STACK_SIZE]; a ge8I$*`@
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int top=-1; ;cL+=!
int pivot; Jk|DWZ
int pivotIndex,l,r; o(v7&m;
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stack[++top]=0; dn=srbJ
stack[++top]=data.length-1; 86qQ"=v
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while(top>0){ $'!n4}$}
int j=stack[top--]; a.O"I3{?h
int i=stack[top--]; (<OmYnm
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pivotIndex=(i+j)/2; I-J%yutB
pivot=data[pivotIndex]; EXW?)_pg
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SortUtil.swap(data,pivotIndex,j); J-
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file://partition l)DcwkIG
l=i-1; hlc g[Qdo*
r=j; %Y|AXxR
do{ ~% ]V,-4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); u0[O /G
SortUtil.swap(data,l,r); j[$+DCO#|m
} b=W kRj
while(l SortUtil.swap(data,l,r); kwS[,Qy\
SortUtil.swap(data,l,j); dKchQsgCg
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if((l-i)>THRESHOLD){ vu*{+YpH
stack[++top]=i; 7n;a_Z0s$
stack[++top]=l-1; wc}x
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} }+[!h=Bx
if((j-l)>THRESHOLD){ ?"}U?m=
stack[++top]=l+1; 0,__{?!
stack[++top]=j; slr>6o%W`
} 0}kvuuR
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} f
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file://new InsertSort().sort(data); = K`]cEL
insertSort(data); I;$tBgOWq
} !+UXu]kA
/** eIPk$j{e
* @param data xAn|OSe
*/ ~7\`qH
private void insertSort(int[] data) { )kKeA
int temp; 3%x-^.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Xh~oDnP
} $x+ P)5)
} &XhxkN$8
} 0q1+5
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} 9/#b1NGv
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归并排序: \IR$~
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package org.rut.util.algorithm.support; * _,yK-et
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import org.rut.util.algorithm.SortUtil; `\BBdQ#bH
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/**
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* @author treeroot :c[T@[
* @since 2006-2-2 c Ct5m
* @version 1.0 "(+aWvb
*/ GsqO^SV
public class MergeSort implements SortUtil.Sort{ $VxuaOTyVZ
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/* (non-Javadoc) ^#7&R"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q|
*nd!y'
*/ ]zvOM^l~
public void sort(int[] data) { T?-K}PUcQ
int[] temp=new int[data.length]; 7tY~8gQel
mergeSort(data,temp,0,data.length-1); itO1ROmu
} sQT,@+JEr
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private void mergeSort(int[] data,int[] temp,int l,int r){ Q6[h;lzGV
int mid=(l+r)/2; _9/Af1X
if(l==r) return ; <g8{LG0
mergeSort(data,temp,l,mid); <S@2%%W
mergeSort(data,temp,mid+1,r); ;/^O7KM-
for(int i=l;i<=r;i++){ j8t_-sU9 i
temp=data; D6FG$SV
} kN vNV(4
int i1=l; v[m1R'
int i2=mid+1; *b1NVN$
for(int cur=l;cur<=r;cur++){ B8V85R
if(i1==mid+1) 6y@o[=m
data[cur]=temp[i2++]; DsiyN:o'+
else if(i2>r) @d[)i,d:G
data[cur]=temp[i1++]; X=JAyxY
else if(temp[i1] data[cur]=temp[i1++]; KH[Oqd
else J8`vk#5
data[cur]=temp[i2++]; f%STkL)
} IS!]!s'EI
} &gvX<X4e
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} =Ajw(I[56
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改进后的归并排序: .-p?skm=a
j 2Jew
package org.rut.util.algorithm.support; ^F/H?V/PX
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import org.rut.util.algorithm.SortUtil; (Z>vbi%
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/** ZpU4"x>
* @author treeroot MXY!N/
* @since 2006-2-2 'p'nAB''!
* @version 1.0 S3/Z]?o
*/ EPeV1$
public class ImprovedMergeSort implements SortUtil.Sort { }Ot2; T
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private static final int THRESHOLD = 10; RYX=;n
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/* 0OVxx>p/x
* (non-Javadoc) 7:S)J~s*O
* _d3/="=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S L%lY
*/ I [v~nY~l`
public void sort(int[] data) { l8!n!sC[,
int[] temp=new int[data.length]; =ThacZHb8
mergeSort(data,temp,0,data.length-1); zeHs5P8}r
} XE*#5u8t
sMb+4{W&6
private void mergeSort(int[] data, int[] temp, int l, int r) { Y3f2RdGl
int i, j, k; >K;C?gHo
int mid = (l + r) / 2; ljj}XJQ
if (l == r) <F5x}i~(C
return; qr7_3
if ((mid - l) >= THRESHOLD) q%}54E80
mergeSort(data, temp, l, mid); +p)kemJ~
else @X0$X+]E*8
insertSort(data, l, mid - l + 1); H52] Zm
if ((r - mid) > THRESHOLD) 3sBu`R*hk
mergeSort(data, temp, mid + 1, r); s$OnQc2/
else \Ot,&Z k2
insertSort(data, mid + 1, r - mid); p< jM%fbZk
ais"xm<V
for (i = l; i <= mid; i++) { [,p[%Dza
temp = data; sBu- \P#
} A!!W\Jt
for (j = 1; j <= r - mid; j++) { p\/;^c`7
temp[r - j + 1] = data[j + mid]; k7Xa|&fQP<
} 5?4jD]Z
int a = temp[l]; rM(2RI4O`0
int b = temp[r]; -*C+z!?BP
for (i = l, j = r, k = l; k <= r; k++) { i!EN/Bd
if (a < b) { x AR9* <-
data[k] = temp[i++]; '|l1-yD_
a = temp; 4P}<86xk
} else { #+Cu&l
data[k] = temp[j--]; ,Tc598D
b = temp[j]; dJd(m&.|N
} wloQk(T<W
} xD<:'-ri>
} +}0/ %5 =1
D[ (A`!)
/** +&hd3
* @param data bIahjxd:
* @param l g)#neEA J
* @param i q~:k[@`.
*/ ]l4#KI@
private void insertSort(int[] data, int start, int len) { P_ x9:3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ey>V^Fj
} r@Tq-o
} 0SLS;s.GX
} }*I:0"WH
} 0 lsX~d'W
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堆排序: \"@BZ.y
v9s/!<j
package org.rut.util.algorithm.support; 7ClN-/4
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import org.rut.util.algorithm.SortUtil; @'{m-?*
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/** U(cV#@Y
* @author treeroot A~Ov(
* @since 2006-2-2 Ov=^}T4zl
* @version 1.0 "]C$"JR
*/ !4B($]t
public class HeapSort implements SortUtil.Sort{ !B &%!06
B'Ll\<mq@
/* (non-Javadoc) +
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z tLP {q#
*/ 4=E9$.3a
public void sort(int[] data) { SiyZq"
MaxHeap h=new MaxHeap(); 'XHKhpm<
h.init(data); L^zF@n^5A
for(int i=0;i h.remove(); w(KB=lA2
System.arraycopy(h.queue,1,data,0,data.length); WS?"OTH.^\
} Hjm
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private static class MaxHeap{ yBwgLn
Td !7Rx
_
void init(int[] data){ VMZ"i1rP
this.queue=new int[data.length+1]; as?~N/}
for(int i=0;i queue[++size]=data; Z;bg;@r|
fixUp(size); 5g3D}F>OJ
} 3;6Criq}
} 2#bpWk 9
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private int size=0; 3"Y
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N>S_Vgk}
private int[] queue; nDvj*lZF
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public int get() { #sK:q&/G`
return queue[1]; l|c#
} M/X&zr
*uq;O*s
public void remove() { O%.c%)4Xo
SortUtil.swap(queue,1,size--); pLvvv#Y
fixDown(1); D/1f>sl
}
nmn 8Y
V1
file://fixdown IO x9".
private void fixDown(int k) { `$*cW1
int j; h`0'27\C
while ((j = k << 1) <= size) { ySLa4DQf
if (j < size %26amp;%26amp; queue[j] j++; :eIu<_,}
if (queue[k]>queue[j]) file://不用交换 `is."]%f
break; !z7j.u`Y
SortUtil.swap(queue,j,k); e==}qQ
k = j; '<.@a"DnJ
} D.hj9
} al9L+ruR
private void fixUp(int k) { B1GBQH$Ms
while (k > 1) { GoK[tjb
int j = k >> 1; ]YP J.[n
if (queue[j]>queue[k]) O|opNr
break; M7|k"izv
SortUtil.swap(queue,j,k); i1"4ztZ
k = j; Vu3;U
} M~Tx4_t
} t<Iy`r71
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} 2aef[TY
Ov$_Phm:
} lC8DhRd0_
6^M!p4$hF
SortUtil: 2cy: l03
s%K9;(RWI
package org.rut.util.algorithm; }i7Gv K<[:
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import org.rut.util.algorithm.support.BubbleSort; "Cz8nG
import org.rut.util.algorithm.support.HeapSort; ~@=*JzP?
import org.rut.util.algorithm.support.ImprovedMergeSort; G(2(-x"+
import org.rut.util.algorithm.support.ImprovedQuickSort; vKv!{>,v9Z
import org.rut.util.algorithm.support.InsertSort; DM3W99PWA
import org.rut.util.algorithm.support.MergeSort; <g SZt\
import org.rut.util.algorithm.support.QuickSort; 6PF7Wl7.
import org.rut.util.algorithm.support.SelectionSort; 6 6G$5
import org.rut.util.algorithm.support.ShellSort; =BN_Kvza^6
UE2!,Z,
/** ^gY^I`"e6
* @author treeroot \J>a*
* @since 2006-2-2 dX4"o?KD>
* @version 1.0 2E
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*/ 8Z{e/wnVF
public class SortUtil { gr?[KDl~
public final static int INSERT = 1; +9MoKn=h
public final static int BUBBLE = 2; Cpm&w?6
public final static int SELECTION = 3; r~&[Gaw
public final static int SHELL = 4; Q Q3a&
public final static int QUICK = 5; g]sc)4
public final static int IMPROVED_QUICK = 6; 8J}gj7^8
public final static int MERGE = 7; >l & N
public final static int IMPROVED_MERGE = 8; ?U\@?@
public final static int HEAP = 9; AATiI+\S
Ifghyh<d
public static void sort(int[] data) { s bl>i
sort(data, IMPROVED_QUICK); zGfF.q}
} j06q3N"
private static String[] name={ R!mFMw"
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y7TW_[_u
}; 3ZZ"mlk*
'jr\F2
private static Sort[] impl=new Sort[]{ jea{BhdUr
new InsertSort(), ~C|. .Z
new BubbleSort(), u@V|13p<
new SelectionSort(), )5NfOvmNB
new ShellSort(), EDMuQu/D8
new QuickSort(), O#j&8hQ>
new ImprovedQuickSort(), CK<Wba
new MergeSort(), sop*?0
new ImprovedMergeSort(), ?<YQ
%qaW7
new HeapSort() z}'-gv\,
}; {h<V^r
R^DZ@[\iV
public static String toString(int algorithm){ )=KD
return name[algorithm-1]; Hs}3c
R}
} k[ {h$
h!k[]bt5
public static void sort(int[] data, int algorithm) { tZW2TUM]
impl[algorithm-1].sort(data); f6\`eLG i1
} k/6Qwb#
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public static interface Sort { }XJA#@
public void sort(int[] data); M0+xl+c+
} `x{*P.]N!<
|ia#Elavo
public static void swap(int[] data, int i, int j) { nY]5pOF:
int temp = data; `7v"(
data = data[j]; ""0 cw
data[j] = temp; `\}Ck1o
} JDp"!x{O
} zEHX:-f8