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。 atyu/+U'}
插入排序: SG:bM7*1'
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package org.rut.util.algorithm.support; %*kLEA*v
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import org.rut.util.algorithm.SortUtil; Lj8)'[K"
/** n+HsQ]z.
* @author treeroot 3y ryeS
* @since 2006-2-2 .5.8;/
/
* @version 1.0 ' sey D
*/ rnO0-h-;
public class InsertSort implements SortUtil.Sort{ +dw!:P&
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/* (non-Javadoc) 1* ^'\W.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0z7L+2#b^
*/ `B:"6nW6
public void sort(int[] data) { o-z &7@3Hu
int temp; P?
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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); 3;-^YG
} (bv,02
} \0ov[T N.>
} !,Nwts>m
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} 'tm$q/&
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冒泡排序: JO=1ivZl
h%TLD[[/jr
package org.rut.util.algorithm.support; *tc{vtuu~^
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import org.rut.util.algorithm.SortUtil; ,."b3wR[w
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/** ,3HcCuT
* @author treeroot R{?vQsLk
* @since 2006-2-2 jJBnDxsA
* @version 1.0 L\e>B>u
*/ R^%e1KO]
public class BubbleSort implements SortUtil.Sort{ +}aC-&
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/* (non-Javadoc) FRZs[\I|iT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g$FEEDF
*/ {U"^UuU]
public void sort(int[] data) { Qf
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int temp; ,a0pAj
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;Lo&}U3F,!
if(data[j] SortUtil.swap(data,j,j-1); HI`q1m.
} dlD ki.
}
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} >$H|:{D
} `#Kx|x6
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} nX^1$')gp
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选择排序: ~e">_;k6
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package org.rut.util.algorithm.support; }gGkV]
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import org.rut.util.algorithm.SortUtil; (UYF%MA}"
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/** ?WpenUWk
* @author treeroot )R?;M
* @since 2006-2-2 h2w}wsb0l
* @version 1.0 C4\,z\Q
*/ <G~>~L.E
public class SelectionSort implements SortUtil.Sort { j U[
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/* rNlW7Y
* (non-Javadoc) E4i0i!<z
* T9syo/(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3s*(uS(
*/ syPWs57pH
public void sort(int[] data) { jb[!E^'&>
int temp; Xsuwa-G!5~
for (int i = 0; i < data.length; i++) { ` ;)ZGY\
int lowIndex = i; >cN~U3
for (int j = data.length - 1; j > i; j--) { VDGCWg6z
if (data[j] < data[lowIndex]) { fuX'~$b.fA
lowIndex = j; bZ 443SG
} nSx]QREL!
}
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SortUtil.swap(data,i,lowIndex); ZA(T
} ymN!-x8q>'
} x\\~SGd
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} 4!#a3=_
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Shell排序: o[1ylzk}+
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package org.rut.util.algorithm.support; bKDA!R2
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import org.rut.util.algorithm.SortUtil; $`VFdAe
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/** a%vrt)Gx
* @author treeroot nFRsc'VT
* @since 2006-2-2 Anm=*;*M`
* @version 1.0 %|"g/2sF[G
*/ k\`S
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public class ShellSort implements SortUtil.Sort{ NbRn*nb/T
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/* (non-Javadoc) 1.U`D\7mb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c#/H:?q?a
*/ E=]4ctK
public void sort(int[] data) { ut2~rRiK
for(int i=data.length/2;i>2;i/=2){ M@Q3M(z
for(int j=0;j insertSort(data,j,i); Vz=auM1xZ
} eH%RNtP`
} TX [%(ft
insertSort(data,0,1); qMYe{{r
} 8,"yNq
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/** Tr&M~Lgb)
* @param data {aYY85j
* @param j SHVWwoieT
* @param i BX+.0M
*/ _-TA{21)
private void insertSort(int[] data, int start, int inc) { BB$oq'
int temp; ?sz)J3
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lfZ04M{2
} gB'fFkd
} M]]pTU((
} #/2$+x
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} [K/m
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快速排序: >slm$~rv
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package org.rut.util.algorithm.support; }J:+{4Yn
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import org.rut.util.algorithm.SortUtil; 8flOq"uK^
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/** _ *f
* @author treeroot ``VW;l{
* @since 2006-2-2 PQN@JaD
* @version 1.0 +HT1 ct+dI
*/ -_C#wtC
public class QuickSort implements SortUtil.Sort{ Gq<X4C#|
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/* (non-Javadoc) :#~U<C@o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ &fa5laJb
public void sort(int[] data) { 7CXW#H
quickSort(data,0,data.length-1); C'yppl%
} }Ew hj>w
private void quickSort(int[] data,int i,int j){ j^tW
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int pivotIndex=(i+j)/2; 39wa|:I
file://swap sZ,Y60s8a
SortUtil.swap(data,pivotIndex,j); L"jY+{oLIJ
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int k=partition(data,i-1,j,data[j]); ($w@Z/;
SortUtil.swap(data,k,j); ~Nf})U
if((k-i)>1) quickSort(data,i,k-1); 66x?A0P
if((j-k)>1) quickSort(data,k+1,j); v3d&*I
".^VI2T
} G7!W{;@I
/** m%;D
* @param data DGW+>\G
* @param i M-)RQ-h
* @param j X$%4$
* @return c;0Vs,DUmG
*/ j>Iaq"
private int partition(int[] data, int l, int r,int pivot) { "tjLc6Xl^
do{ Wq*b~Lw
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); BrRL7xX
SortUtil.swap(data,l,r); K~=UUB
} sJwyj D$b
while(l SortUtil.swap(data,l,r); /sM~Uq?
return l; yz8mP3"c:o
} fXI:Y8T
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} oi}i\:
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改进后的快速排序: !q"W{P
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package org.rut.util.algorithm.support; H~ZV*[A`
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import org.rut.util.algorithm.SortUtil; 2(5ebe[
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/** n
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* @author treeroot su*Pk|6%
* @since 2006-2-2 qW:HNEiir
* @version 1.0 kmzH'wktt
*/ K\"R&{+=
public class ImprovedQuickSort implements SortUtil.Sort { u:0aM}9A
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private static int MAX_STACK_SIZE=4096; ]Q]W5WDe:
private static int THRESHOLD=10; F}Vr:~
/* (non-Javadoc) `Al;vVMRO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ctE\ q
*/ s0Z
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public void sort(int[] data) { CLvX!O(~
int[] stack=new int[MAX_STACK_SIZE]; l
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int top=-1; )95f*wte
int pivot; ODZ|bN0>
int pivotIndex,l,r; W9NX=gE4
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stack[++top]=0; Xpzfm7CB/
stack[++top]=data.length-1; cGjPxG;
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while(top>0){ {G?N E
int j=stack[top--]; 9tF9T\jW
int i=stack[top--]; #o1=:PQaC
:
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pivotIndex=(i+j)/2; N('&jHF
pivot=data[pivotIndex]; n:MdYA5,m
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SortUtil.swap(data,pivotIndex,j); J!5$,%v
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file://partition Sa2>`":d
l=i-1; B)d(TP,>
r=j; pz"0J_xDM
do{ bygx]RC[
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); p/+a=Yo
SortUtil.swap(data,l,r); pK0"%eA
} *6q5S4 r
while(l SortUtil.swap(data,l,r); E>l~-PaZY
SortUtil.swap(data,l,j); sQkhwMg
`OSN\"\ad
if((l-i)>THRESHOLD){ '],J$ge
stack[++top]=i; v:H$<~)E|
stack[++top]=l-1; |i++0BU
} y5!KX AQ%
if((j-l)>THRESHOLD){ a+n0|CvF
stack[++top]=l+1; T=ev[ mS
stack[++top]=j; x7O-Y~[2
} JtER_(.
|\pbir
} #U14-^7
file://new InsertSort().sort(data); 3Z1CWzq(
insertSort(data);
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} ` V##Y
/** K6R.@BMN
* @param data 41&\mx
*/ p,#o<W
private void insertSort(int[] data) { ob8qe,_'
int temp; 4:FK;~wM&x
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~@}Bi@*
} \ Yx/(e
} %7|9sQ:
} `nu''B
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} $< JaLS
9 AJ(&qY(
归并排序: 4r45i:
A}l3cP;
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package org.rut.util.algorithm.support; 7Op>i,HZk\
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import org.rut.util.algorithm.SortUtil;
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/** RCpR3iC2
* @author treeroot jnn}V~L
* @since 2006-2-2 W)bLSL]`E
* @version 1.0 `EaLGzw
*/ 7j-4TY~
public class MergeSort implements SortUtil.Sort{ {tWf
^~etm
/* (non-Javadoc) ')cMiX\v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P5UL4uyl
*/ :.Wr{"`
public void sort(int[] data) { {z{bY\
int[] temp=new int[data.length]; yK=cZw%D
mergeSort(data,temp,0,data.length-1); .6Pw|xu`Pw
} 5?x>9Ca
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private void mergeSort(int[] data,int[] temp,int l,int r){ r 8RoE`/T
int mid=(l+r)/2; qv!2MUw\j
if(l==r) return ; Vh4X%b$TV
mergeSort(data,temp,l,mid); rbWP78
mergeSort(data,temp,mid+1,r); H:V2[y8\
for(int i=l;i<=r;i++){ *_d7E
temp=data; X9V *UXTc
} ;>Ib^ov
int i1=l; @J/K-.r
int i2=mid+1; koug[5T5
for(int cur=l;cur<=r;cur++){ "]}
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if(i1==mid+1) dl.p\t(1
data[cur]=temp[i2++]; 3ca (i/c
else if(i2>r) %WjXg:R
data[cur]=temp[i1++]; fb e[@#:
else if(temp[i1] data[cur]=temp[i1++]; MDn ua
else
R[D{|K@"
data[cur]=temp[i2++]; (,0(
} GBPo8L"9
} FOE4>zE
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} ^'PWI{ O
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改进后的归并排序: K &N
(5-FV p
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package org.rut.util.algorithm.support; 3EPv"f^V
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import org.rut.util.algorithm.SortUtil; sYI-5D]
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/** rC^WPW
* @author treeroot u 7>],<
* @since 2006-2-2 zBzZxK>$
* @version 1.0 u. F9g
#
*/ V Y7[)
public class ImprovedMergeSort implements SortUtil.Sort { _l89
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private static final int THRESHOLD = 10; UM"- nZ>[
[1Qo#w1
/* +nFu|qM}
* (non-Javadoc) <Zmg#
* lR6@
xJd:@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qm/22:&v5
*/ V_ .5b&@
public void sort(int[] data) { Q+{xZ'o"Z
int[] temp=new int[data.length]; A P?R"%
mergeSort(data,temp,0,data.length-1); D2Kp|F;
} tEvut=k'
u04kF^
private void mergeSort(int[] data, int[] temp, int l, int r) { G[uK -U
int i, j, k; (x;@%:3j$
int mid = (l + r) / 2; n FHUy9q
if (l == r) ^ B fC
return; )q8p k2
if ((mid - l) >= THRESHOLD) K0|FY=#2y
mergeSort(data, temp, l, mid); 2*laAB
else #A JDWelD
insertSort(data, l, mid - l + 1); 3u+T~g0^
if ((r - mid) > THRESHOLD) }C"%p8=HM
mergeSort(data, temp, mid + 1, r); V^bwXr4f
else ?BeiY zg
insertSort(data, mid + 1, r - mid); .ypL=~Rp
^ @s1Z7
for (i = l; i <= mid; i++) { $r@zs'N
temp = data; 6]WAUK%h
} 98IJu
for (j = 1; j <= r - mid; j++) { -b9\=U[
temp[r - j + 1] = data[j + mid]; @=}0`bE
} l<58A7
int a = temp[l]; [}E='m}u9+
int b = temp[r]; `EA\u]PwQ
for (i = l, j = r, k = l; k <= r; k++) { 61C7.EZZ;
if (a < b) { \/r}]Vz
data[k] = temp[i++]; HdUQCugxx:
a = temp; P64PPbP
} else { :+^lJ&{U
data[k] = temp[j--]; 6
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b = temp[j]; l*(8i ^
} -A^ _{4X
} ZB=
E}]v6
} NRs13M<ftf
/=nJRC3.
/** 2j[=\K]
* @param data C!<Ou6}!b
* @param l H(ARw'M
* @param i ~D j8z+^
*/ oGnSPI5KGC
private void insertSort(int[] data, int start, int len) { we//|fA<
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [6Izlh+D
} q_[o"wq/
} ]nn98y+
} !Iy_UfW
} V(I8=rVH
QOGvC[*`<T
堆排序: i+ ?^8#
C_}]`[
package org.rut.util.algorithm.support; =7=]{Cx[
F]O`3e=!
import org.rut.util.algorithm.SortUtil; Cw3a0u
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/** Tv,[DI +
* @author treeroot O3,jg|,
* @since 2006-2-2 w3ResQ
* @version 1.0 2~)`N>@
*/ `KoV_2|
public class HeapSort implements SortUtil.Sort{ ~^:A{/
gD@){Ip
/* (non-Javadoc) AofKw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V+Y%v.F
*/ sUO`u qZV
public void sort(int[] data) { I^-Sb=j?Z
MaxHeap h=new MaxHeap(); NIry)'"
h.init(data); 0
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for(int i=0;i h.remove(); Q->sV$^=T
System.arraycopy(h.queue,1,data,0,data.length); i>`%TW:g
} Naf0)3q>!
/hR&8 `\\
private static class MaxHeap{ -=Q*Ml#I
~!d\^Z^i
void init(int[] data){ 9s
q
this.queue=new int[data.length+1]; )D7m,Wi+
for(int i=0;i queue[++size]=data; D%pF;XY
fixUp(size); `4J$Et%S
} K\Wkoi5
} iOghb*aW
'o2Fa_|<#
private int size=0; Dw.J2>uj
m+[Ux{$
private int[] queue; c7k~S-nU
H/
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public int get() { Ax7[;|2
return queue[1]; &K#M*B,*p
} ""G'rN_=Bi
.uZ3odMlx
public void remove() { oJz^|dW
SortUtil.swap(queue,1,size--); \!ZTL1b8t
fixDown(1); JX;G<lev
} QA`sx
file://fixdown aeJHMHFc
private void fixDown(int k) { YK'<NE3 4
int j; n b?lTX~
while ((j = k << 1) <= size) { .|70;
if (j < size %26amp;%26amp; queue[j] j++; |0b`fOS
if (queue[k]>queue[j]) file://不用交换 zwjgE6
break; [}=B8#Jl-C
SortUtil.swap(queue,j,k); e X|m
k = j; AQvudx)@"
} 6A-|[(NS
} /W<;Z;zk
private void fixUp(int k) { jV1.Yz(`
while (k > 1) { r`d4e,(
int j = k >> 1; [RhO$c$[\
if (queue[j]>queue[k]) |/{=ww8|
break; SY\ gXO8k
SortUtil.swap(queue,j,k); ",; H`V
k = j; ~B?y{
} 8cIKvHx
} Ve; n}mJ?
/
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} @qAS*3j
*^ZV8c}
} V**~m9f
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SortUtil: `Ggbi4),
p_%Rt"!
package org.rut.util.algorithm; 8(~h"]`!
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import org.rut.util.algorithm.support.BubbleSort; H<,gU`&R
import org.rut.util.algorithm.support.HeapSort; $'M!HJxb
import org.rut.util.algorithm.support.ImprovedMergeSort; iqWQ!r^
import org.rut.util.algorithm.support.ImprovedQuickSort; on`3&0,.
import org.rut.util.algorithm.support.InsertSort; 6LIJQ
import org.rut.util.algorithm.support.MergeSort; HIZe0%WPw
import org.rut.util.algorithm.support.QuickSort; Kn1a>fLaJ_
import org.rut.util.algorithm.support.SelectionSort; E ~<JC"]
import org.rut.util.algorithm.support.ShellSort; ] (8[}CeL
G_,jgg7
/** >|UOz&
* @author treeroot %IWPM"
* @since 2006-2-2 2FJ*f/
* @version 1.0 ^<2p~h0
\
*/ LZY"3Jn[nQ
public class SortUtil { lt8|9"9<
public final static int INSERT = 1; A3/k@S-R2
public final static int BUBBLE = 2; 1mG-}
public final static int SELECTION = 3; kt:!
7
public final static int SHELL = 4; YIYmiv5
public final static int QUICK = 5; EaN6^S=
public final static int IMPROVED_QUICK = 6; ZUd-<y
public final static int MERGE = 7; r;N|)
public final static int IMPROVED_MERGE = 8; u'BaKWPS
public final static int HEAP = 9; (*iHf"=\
[{,1=AB
public static void sort(int[] data) { `[i r}+S
sort(data, IMPROVED_QUICK); C LRdm^B
} SwMc
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private static String[] name={ XwaXdvmK
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" q(84+{>B
}; fE
mr^R
&%J08l6
private static Sort[] impl=new Sort[]{ X'iWJ8
new InsertSort(), S"H2 7
new BubbleSort(),
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new SelectionSort(), 4.t-i5
new ShellSort(), W'M*nR|xo
new QuickSort(), Ysv"
6b}
new ImprovedQuickSort(), vdwsJPFbc
new MergeSort(), Gk6iIK
new ImprovedMergeSort(), >z@0.pN]7
new HeapSort() jse&DQ
}; S)@j6(HC4
sQZhXaMa $
public static String toString(int algorithm){ 9G2FsM|,
return name[algorithm-1]; I; rGD^
} c]!V'#U
WH^%:4
public static void sort(int[] data, int algorithm) { a\*yZlXKs
impl[algorithm-1].sort(data); 5nx1i
} w``U=sfmV
>^3i|PB
public static interface Sort { Qo|\-y-#
public void sort(int[] data); PCtzl)
} k!Y, 63V=
7@W>E;go
public static void swap(int[] data, int i, int j) { H<+TR6k<
int temp = data; Xsa].
data = data[j]; cw
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data[j] = temp; 3=oDQ&UFt
} dSHDWu&
} G18b$z