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。 Zzjx;SF
插入排序: ?\,;KNQr
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package org.rut.util.algorithm.support; 0]7jb_n1
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import org.rut.util.algorithm.SortUtil; Ld*Ds!*'/
/** ^5]9B<i[Y
* @author treeroot W,[ RB
* @since 2006-2-2 Jn{)CZ
* @version 1.0 Z0Sqw
*/ 6<W^T9}v@/
public class InsertSort implements SortUtil.Sort{ $V3If
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/* (non-Javadoc) Ne+Rs+~4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {2 q"9Ox"
*/ @@\qso
public void sort(int[] data) { F'[Y.tA ,#
int temp; VQ('ejv}/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;U4O` pZ
}
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} NE#`ZUr3
} h<?Px"& J
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} eg*a Vb
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冒泡排序: 9`92
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package org.rut.util.algorithm.support; GCYXDovh
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import org.rut.util.algorithm.SortUtil; vX>{1`e{S
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/** [@qjy*5p
* @author treeroot .^A4w;jPU
* @since 2006-2-2 D6lzcf
* @version 1.0 Sm {Sq
*/ VOj7Tz9UD
public class BubbleSort implements SortUtil.Sort{ )kjQ W&)g
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/* (non-Javadoc) *Jcd_D\-(1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IY.M#Q]
*/ +vJ}'uR3P
public void sort(int[] data) { {w3<dfJ
int temp; =),ZZD#J
for(int i=0;i for(int j=data.length-1;j>i;j--){ q<.k:v&
if(data[j] SortUtil.swap(data,j,j-1); Fp?M@
} :-59~8&
} U4dfO=
} ?i0u)<H
} p/0dtnXa(
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} V1Ft3Msq
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选择排序: m==DBh
5/6Jq
package org.rut.util.algorithm.support; i,~(_|-r
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import org.rut.util.algorithm.SortUtil; OSuQ7V
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/** ?2o+x D2
* @author treeroot _~1O #*|4
* @since 2006-2-2 21<Sfsc$
* @version 1.0 Cs"ivET
*/ |4BD
public class SelectionSort implements SortUtil.Sort { WllQM,h
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/* j-aTpN
* (non-Javadoc) #Q_Scxf
* .0/"~5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k=d_{2 ~
*/ n|.eL8lX.<
public void sort(int[] data) { d+h~4'ebv
int temp; 3`3my=
for (int i = 0; i < data.length; i++) { OP(om$xm
int lowIndex = i; `\z )EoI
for (int j = data.length - 1; j > i; j--) { =<(6yu_
if (data[j] < data[lowIndex]) { 9.
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lowIndex = j; /3Y"F"`M.
} DcRoW
} ZBK)rmhMx
SortUtil.swap(data,i,lowIndex); { .i^&
} LCIe1P2
} {J)gS
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} P_Gu~B!Y
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Shell排序: %Y.@AiViz
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package org.rut.util.algorithm.support; ]~3a ~
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import org.rut.util.algorithm.SortUtil; hE,-CIRg
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/** DM)Re~*
* @author treeroot rV%;d[LB
* @since 2006-2-2 P|f h4b4
* @version 1.0 K.? S,qg
*/ Y)S
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public class ShellSort implements SortUtil.Sort{ 5@bmm]
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/* (non-Javadoc) C?g*c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 44B9JA7u
*/
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public void sort(int[] data) { n#P?JyGm1g
for(int i=data.length/2;i>2;i/=2){ oB!-JX9
for(int j=0;j insertSort(data,j,i); IQ~EL';<w
} ;,KT+!H$
} ?|<p^:
insertSort(data,0,1); Hs.5@ l
} ~fpk`&nhe
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/** 'A/{7*,
* @param data t<p4H^
* @param j i~DLo3
* @param i Io7=Mc4
*/ |JUAR{
private void insertSort(int[] data, int start, int inc) { srU*1jD)
int temp; _>{"vY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Oh=Kl3xs
} 2Nx#:Rz
} b:*(
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} <5c^DA
=~$)Ieu
} Ve\!:,(Y_
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快速排序: Uv:NY1(3!
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package org.rut.util.algorithm.support; _~b]/]|z#N
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import org.rut.util.algorithm.SortUtil; tjDCfJx*
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/**
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* @author treeroot z
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* @since 2006-2-2 yuB\Z/
* @version 1.0 ='.G,aJ9
*/ B}ASZYpW>
public class QuickSort implements SortUtil.Sort{ ")GrQv a
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/* (non-Javadoc) LsV?b*^(p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IlP@a[:_
*/ bdyE9t
public void sort(int[] data) { [/eRc
quickSort(data,0,data.length-1); 8IihG
\
} fK9wr@1
private void quickSort(int[] data,int i,int j){ vqBT^Q_q;
int pivotIndex=(i+j)/2; v>p~y u+G
file://swap I/w=!Ih
SortUtil.swap(data,pivotIndex,j); Z=/bD*\g
lJXihr
int k=partition(data,i-1,j,data[j]); Eh?,-!SUQn
SortUtil.swap(data,k,j); 0%hOB:
if((k-i)>1) quickSort(data,i,k-1); 8#~x6\!b
if((j-k)>1) quickSort(data,k+1,j); A/U, |
gK"E4{y_@
} JlN<w
/** %N-f9o8
* @param data #Q_
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* @param i "':u#UdS
* @param j |R$/oq
* @return O'<cEv'B*
*/ 3eS
*U`_
private int partition(int[] data, int l, int r,int pivot) { ;b1*2-
do{ El`f>o+EJ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); qHQ#^jH
SortUtil.swap(data,l,r); =WP`i29j9}
} $X:r&7t+Q[
while(l SortUtil.swap(data,l,r); SPK%
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return l; Z3]ut#`
} ~$3X>?Q
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} }
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改进后的快速排序: L[FNr&
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package org.rut.util.algorithm.support; -P>f2It
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import org.rut.util.algorithm.SortUtil; _~b$6Nf!83
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/** w;p!~o &
* @author treeroot D.\s mk
* @since 2006-2-2 j3`"9bY
* @version 1.0 :7+E
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*/ T] tG,W1>i
public class ImprovedQuickSort implements SortUtil.Sort { AK*F,H9
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private static int MAX_STACK_SIZE=4096; \D37l_
private static int THRESHOLD=10; \y
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/* (non-Javadoc) C r~!N|(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P|OjtI
*/ `/mcjKQ&9y
public void sort(int[] data) { M)oy3y^&
int[] stack=new int[MAX_STACK_SIZE]; Q'~2,%3<
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int top=-1; z<_a4ffR
int pivot; ?z0W1a
int pivotIndex,l,r; RWFvf
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stack[++top]=0; Q)=2%X
stack[++top]=data.length-1; >[ g=G
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while(top>0){ MS]Q\g}U
int j=stack[top--]; pwRCfR)" X
int i=stack[top--]; &(m01
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pivotIndex=(i+j)/2; Lf`<4 P
pivot=data[pivotIndex]; 7~SnY\B|
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SortUtil.swap(data,pivotIndex,j); yG;@S8zC
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file://partition MpTOC&NG%s
l=i-1; 6ld /E
r=j; G_M8? G0
do{ 1B@7#ozWA?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ">5$;{;2r
SortUtil.swap(data,l,r); G=LK
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} av_ +M;G
while(l SortUtil.swap(data,l,r); G E? \Vm
SortUtil.swap(data,l,j); =2YXh,i
c& K`t
if((l-i)>THRESHOLD){ Ko)f:=Qo
stack[++top]=i; /.~zk(-&h
stack[++top]=l-1; !L<z(dV|(
} p=\Q7<Z6d,
if((j-l)>THRESHOLD){ (/E@.z[1
stack[++top]=l+1; %j2$ ezud
stack[++top]=j; *U$%mZS]1
} DS_0p|2
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} 13*S<\
file://new InsertSort().sort(data); !,C8
insertSort(data); `2]TPaWGh
} R7KV
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/** ]]e>Jym
* @param data yE~D0%Umq
*/ d\zUtcJwC
private void insertSort(int[] data) { Ktu~%)k%
int temp; )1YX+',"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bkz/V/ Y
} Xoha.6$l5
} drvrj~o:
} x0K#-
m77!i>V)
} G_zK .N
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归并排序: $sUn'62JlU
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package org.rut.util.algorithm.support; dpX Fx"4A
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import org.rut.util.algorithm.SortUtil; \cf'Hj}
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/** IVa6?f6H_
* @author treeroot LOr( HgyC
* @since 2006-2-2 cmAdQ)(Kzd
* @version 1.0 %;|dEY
*/ 6{0MprY
public class MergeSort implements SortUtil.Sort{ TuaP
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/* (non-Javadoc) r'lANl-v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EWY'E;0@5
*/ 7 toIbC#
public void sort(int[] data) { /a9CqK
int[] temp=new int[data.length]; 9MQjSNYzo
mergeSort(data,temp,0,data.length-1); id" l"
} \ H#"
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private void mergeSort(int[] data,int[] temp,int l,int r){ l|iOdKr h
int mid=(l+r)/2; }`!-WY
if(l==r) return ; =''b `T$
mergeSort(data,temp,l,mid); /k(wb4Hv
mergeSort(data,temp,mid+1,r); W$`#X
for(int i=l;i<=r;i++){ -@Urq>^v T
temp=data; / {[p?7x>
} B6KG\,'|
int i1=l; )heHERbJ
int i2=mid+1; 4%|r$E/TQ
for(int cur=l;cur<=r;cur++){ !H<%X~|,
if(i1==mid+1) FjLMN{eH/
data[cur]=temp[i2++]; BjA$^ i|8
else if(i2>r) p )]x,F
data[cur]=temp[i1++]; 3+vVdvu%
else if(temp[i1] data[cur]=temp[i1++]; :z *jl'L
else CS5[E-%}T=
data[cur]=temp[i2++]; @A<~bod
} ^zS;/%
} ZU;jz[}
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#SjjK
} F?0Q AA
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改进后的归并排序: ^]~!:Ej0
Q#.E-\=^
package org.rut.util.algorithm.support; 3-)}.8F
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import org.rut.util.algorithm.SortUtil; &\Lu}t7Ru
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/** 7s!rer>
* @author treeroot &-X51O C
* @since 2006-2-2 {^^LeUd#V
* @version 1.0 zA:q/i
*/ x25zk4-
public class ImprovedMergeSort implements SortUtil.Sort { N:S2X+}(
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private static final int THRESHOLD = 10; uJeJ=7,EO
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/* *!{&n*N
* (non-Javadoc) KrHKM 3<
* 7^mQfQv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +DR{aX/ll
*/ {6wXDZxv
public void sort(int[] data) { DUH_LnHw)
int[] temp=new int[data.length]; inZ0iU9dy
mergeSort(data,temp,0,data.length-1); ,8d&uR}x
}
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private void mergeSort(int[] data, int[] temp, int l, int r) { jp@X,HES
int i, j, k; ]=I2:Rb
int mid = (l + r) / 2; g)D@4RM
if (l == r) _@gg,2
u-
return; W1t_P&i
if ((mid - l) >= THRESHOLD) _`0DO4IU
mergeSort(data, temp, l, mid); @
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else *yo'Nqu
insertSort(data, l, mid - l + 1); ,:MUf]Ky
if ((r - mid) > THRESHOLD) 4xg1[Z%:
mergeSort(data, temp, mid + 1, r); s*Z
yr%R
else p>:.js5.a
insertSort(data, mid + 1, r - mid); 7!FiPH~kM
F$kiSjh9aJ
for (i = l; i <= mid; i++) { 8 ph1xQ'
temp = data; kM=&Tfpj
} Fm6]mz%~u#
for (j = 1; j <= r - mid; j++) { pS7y3(_
temp[r - j + 1] = data[j + mid]; )1R[X!KQ7
} ;:ZD<'+N
int a = temp[l]; #N64ZXz_
int b = temp[r]; Aw4)=-LKO
for (i = l, j = r, k = l; k <= r; k++) { Eb63O
if (a < b) { SkVah:cF-
data[k] = temp[i++]; u|u)8;'9(
a = temp; R\#5;W^
} else { >1]hR)Ip
data[k] = temp[j--]; W$J.B!O
b = temp[j]; nmE H/a
} hb/Z{T'
} {TMng&
} DAORfFG74
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/** F{.g05^y
* @param data eoQt87VCU
* @param l MTgf.
* @param i KZ^>_K&
*/ f4NN?"W)
private void insertSort(int[] data, int start, int len) { @KLX,1K
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 42-T&7k
} BePb8
k<y
} t
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} r;H#cMj
} [O!/hppN
%]tW2s"
堆排序: iS"6)#a72
*H=h7ESq
package org.rut.util.algorithm.support; oblw!)
mRGr+m
import org.rut.util.algorithm.SortUtil; <8Zs;>YuK
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/** N}{V*H^0QU
* @author treeroot 7*Zm{r@u
* @since 2006-2-2 |q\i, }
* @version 1.0 bmKvvq
*/ 6!*zgA5M'
public class HeapSort implements SortUtil.Sort{ $`t2SD
d0zp89BEn
/* (non-Javadoc) fmUrwI1 %
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ |HA\!
*/ 5N;xo??
public void sort(int[] data) { 7M?Sndp$
MaxHeap h=new MaxHeap(); 1}ifJ~)5S
h.init(data); $~
d6KFT
for(int i=0;i h.remove(); fJ\u8
System.arraycopy(h.queue,1,data,0,data.length); B/3xV:Gy
} o4z|XhLr
I\j-
private static class MaxHeap{ g ssEdJ
)2Y]A^ Y
void init(int[] data){ XQ}7.u!
this.queue=new int[data.length+1]; N"~P$B1X
for(int i=0;i queue[++size]=data; KRhls"\1
fixUp(size); Lc-WfzT
} iP$>/ [I
} X .K*</(g
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private int size=0; eU]I !pI<
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private int[] queue; v sYbR3O
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public int get() { N[yS heT
return queue[1]; $:vS_#
} ~C?)-
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~D/1U)kt
public void remove() { A[:(#iR5-E
SortUtil.swap(queue,1,size--); ]2iEi`"[
fixDown(1); 5mm&l+N)
} vOtILL6
file://fixdown B;':Eaa@
private void fixDown(int k) { ([ xYOxcp5
int j; yuIy?K
while ((j = k << 1) <= size) { @oE^(
if (j < size %26amp;%26amp; queue[j] j++; >G7dw1;
if (queue[k]>queue[j]) file://不用交换 ""$vaqt
break; 6"o=`Sq
SortUtil.swap(queue,j,k); S?6-I,]h
k = j; Q@W!6]*\
} ?PS?_+E\L
} 8AuE:=?,,
private void fixUp(int k) { OSfT\8YA
while (k > 1) { >tPf.xI|l
int j = k >> 1; IdMwpru(
if (queue[j]>queue[k]) .zl[nx[9"D
break; k6J&4?xZ
SortUtil.swap(queue,j,k); pg!MtuC}
k = j; &ds+9A
} O$;#GpR
} z5oJQPPi
ke!
} S-}c_zbl;
@87Y/_l
} |/H?\]7
X.S<",a{qz
SortUtil: +lfO4^V
*r[V[9+y-D
package org.rut.util.algorithm; 1x=x,lcL
vK@UK"m
import org.rut.util.algorithm.support.BubbleSort; cD6 ^7QF
import org.rut.util.algorithm.support.HeapSort; u8.Tu7~
import org.rut.util.algorithm.support.ImprovedMergeSort; kS&>g
import org.rut.util.algorithm.support.ImprovedQuickSort; }eW<P079
import org.rut.util.algorithm.support.InsertSort; 4_iA<}>|
import org.rut.util.algorithm.support.MergeSort; j'U1lEZm2
import org.rut.util.algorithm.support.QuickSort; >qOG^{&x
import org.rut.util.algorithm.support.SelectionSort; 9Q}g
Vqn
import org.rut.util.algorithm.support.ShellSort; 2C}Yvfm4
\?R#ZxP@
/** FG[rH]
* @author treeroot .#bf9JOE
* @since 2006-2-2 o+}k$i!6
* @version 1.0 ,dTmI{@O
*/ %Z <{CV
public class SortUtil { `7w-_o
%
public final static int INSERT = 1; xSd&xwP
public final static int BUBBLE = 2; R'`'q1=R
public final static int SELECTION = 3; Cs[d:T
public final static int SHELL = 4; x x>hJ!
public final static int QUICK = 5; bY.VNA
public final static int IMPROVED_QUICK = 6; *|g[Mn
public final static int MERGE = 7; z2t+1In,
public final static int IMPROVED_MERGE = 8; ih/E,B"
public final static int HEAP = 9; w-e{_R
64mEZ_kG,
public static void sort(int[] data) { .!KsF
h,pK
sort(data, IMPROVED_QUICK); PIa!NPy
} |&JeJ0k>~
private static String[] name={ h#O9TB
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" QHZ",1F
}; U< G 2tn(
.gDq+~r8O
private static Sort[] impl=new Sort[]{ M)+p H
new InsertSort(), lP`BKc,
new BubbleSort(), B8T$<
new SelectionSort(), ; $80}TY '
new ShellSort(), \ m~?yq8H
new QuickSort(), wxo
new ImprovedQuickSort(), ]$Z:^"JS3
new MergeSort(), :gU5C Um
new ImprovedMergeSort(), o=($'(1
new HeapSort() T8z?_ *k
}; H,L{N'[Xph
UTyV6~
public static String toString(int algorithm){ Ha-]U:Vcx
return name[algorithm-1]; K-C,n~-
} BNNM$.ZIQ
|{YN3"qN
public static void sort(int[] data, int algorithm) { A,DBq9Z+4R
impl[algorithm-1].sort(data); e9KD mX_
} >[|N%9\
@!f4>iUy
public static interface Sort { #mu L-V
public void sort(int[] data); ,<tJ`,0X
} w7?fJ")
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public static void swap(int[] data, int i, int j) { ~/`/r%1/J
int temp = data; nFEJO&1+
data = data[j]; Re8x!e'>
data[j] = temp; ~%/Rc`
} 8O,\8:I#
} h.>SVQzU