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。 Rq7ks To
插入排序: C {))T5G
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package org.rut.util.algorithm.support; /vMpSN|3
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import org.rut.util.algorithm.SortUtil; P'K')]D=!
/** 4q[r
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* @author treeroot 'Zzm'pC
* @since 2006-2-2 1/n3qJyx2}
* @version 1.0 s0:1G
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*/ ,d7@*>T&
public class InsertSort implements SortUtil.Sort{ +a|4XyN
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/* (non-Javadoc) _RmrjDk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c"~TH.,d
*/ r oKiSE`
public void sort(int[] data) { y.nw6.`MR
int temp; V)]&UbEL|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); | @YN\g K;
} 7 XY C.g
} YJ9_cA'A
} k@2gw]y"
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冒泡排序: WO{N@f^
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package org.rut.util.algorithm.support; arB$&s
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import org.rut.util.algorithm.SortUtil; M3Z yf
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/** NOx|
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* @author treeroot aX|`G]PhdI
* @since 2006-2-2 uC3$iY:_e
* @version 1.0 6/z}-;,W'
*/ 'L,rJ =M3
public class BubbleSort implements SortUtil.Sort{ ReRRFkO"2
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/* (non-Javadoc) f|`{PP`\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]-6 G'i?
*/ t@ Jo ?0s
public void sort(int[] data) { ``SjALf
int temp; 7Ct m({I-
for(int i=0;i for(int j=data.length-1;j>i;j--){ !y),| #7P
if(data[j] SortUtil.swap(data,j,j-1); %:y-"m1\u$
} YMWy5 \
} h {m]n!
} pM=vW{"I/
} 2::T, Z
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} N>~*Jp2;
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选择排序: nuQ"\ G
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package org.rut.util.algorithm.support; =19]a
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import org.rut.util.algorithm.SortUtil; d0xV<{,-
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/** o{
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* @author treeroot d.
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* @since 2006-2-2 WULj@ds\~
* @version 1.0
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*/ &a0%7ea`.S
public class SelectionSort implements SortUtil.Sort { F^\v`l,
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/* ?{[H+hzz0
* (non-Javadoc) wO"Q{oi+
* n`hSn41A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H5 -I}z
*/ |gaZq!l
public void sort(int[] data) { zL|^5p`K
int temp; )SQ g
for (int i = 0; i < data.length; i++) { R|vF*0)>W
int lowIndex = i; 9\;EX
for (int j = data.length - 1; j > i; j--) { V *]!N
if (data[j] < data[lowIndex]) { qM`SN4C
lowIndex = j; ZTun{Dw{
} qg|+BIiUz
} :Cuae?O,
SortUtil.swap(data,i,lowIndex); t_N
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} g(`6cY[}
} i^>
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} NubD2
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Shell排序: Nr)(&c8
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package org.rut.util.algorithm.support; OY)x
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import org.rut.util.algorithm.SortUtil; 6nwO:?1o9
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/** J@5 OZFMZ
* @author treeroot K%g\\uo
* @since 2006-2-2 OlK2<<
* @version 1.0 lojn8uL
*/ {kzM*!g
public class ShellSort implements SortUtil.Sort{ V^ :\/EU
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/* (non-Javadoc) zf!c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WX[ycm8
*/ qkEy$[D9
public void sort(int[] data) { iaC$K@a{
for(int i=data.length/2;i>2;i/=2){ }a`LOBne
for(int j=0;j insertSort(data,j,i); '-x%?Ll
} J0oR]eT}
} ^"f
insertSort(data,0,1); f]lDJ?+
M
} i6-K!
#=tWCxf=
/** *vb)d0}P
* @param data @Q^;qMy
* @param j @4|/| !
* @param i pr?/rXw
*/ "gO5dZ\0
private void insertSort(int[] data, int start, int inc) { B^qB6:\t
int temp; M{H&5 9v
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -7`J(f.rYC
} 4{R`
} n5i}J/Sa2
} j Hzy1P{?
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} E%'DIs
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快速排序: 3k/MigT
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package org.rut.util.algorithm.support; 4EK[gM8
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import org.rut.util.algorithm.SortUtil; @|@43}M]C-
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/** }>w;
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* @author treeroot d?K8Ygz
* @since 2006-2-2 dO@iq^9-
* @version 1.0 8a h]D
*/ r:IU+3
public class QuickSort implements SortUtil.Sort{ OTm`i>rB
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/* (non-Javadoc) RoTT%c P_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )t4C*+9<U
*/ phdN9<Z
public void sort(int[] data) { c1^3lgPv
quickSort(data,0,data.length-1); p
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} +D@R'$N
private void quickSort(int[] data,int i,int j){ ?,NAihN]
int pivotIndex=(i+j)/2; oW_WW$+N
file://swap {x:IsQZ
SortUtil.swap(data,pivotIndex,j); x#^kv)
OrBFe *2y
int k=partition(data,i-1,j,data[j]); c>g%oE
SortUtil.swap(data,k,j); W@tLT[}CG
if((k-i)>1) quickSort(data,i,k-1); :-Pj )Y{I
if((j-k)>1) quickSort(data,k+1,j); 8M|Q^VeT,1
7Tbk ti;
} F)@<ZE
/** \9p;md`
* @param data 6yb<4@LOb
* @param i v^tKT&
* @param j */)gk=x8
* @return U`Zn*O~/
*/ 0#JBz\
private int partition(int[] data, int l, int r,int pivot) { R<=t{vTJ5
do{ QZlUUj\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6D0,ME#
SortUtil.swap(data,l,r); 8`2K=`]ES+
} *pMA
V[^
while(l SortUtil.swap(data,l,r); ,b4&$W].
return l; d1-p];&
} A@ME7^w7
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} =X*E(.6Ip
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改进后的快速排序: To`?<]8
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package org.rut.util.algorithm.support; wu')Q/v
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import org.rut.util.algorithm.SortUtil; 3fPv71NVtt
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/** #"_MY-
* @author treeroot i1
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* @since 2006-2-2 N,|oV|i
* @version 1.0 q4{ t H
*/ Fn,|J[sC
public class ImprovedQuickSort implements SortUtil.Sort { GLyh1qNX
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private static int MAX_STACK_SIZE=4096; >y[S?M
private static int THRESHOLD=10; jq)|Uq'6
/* (non-Javadoc) bed+Ur&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \4k*Zk
*/ &UR/Txnu
public void sort(int[] data) { U:r2hqegd
int[] stack=new int[MAX_STACK_SIZE]; OT i3T1&
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int top=-1; "+&<Q d2
int pivot; ;>N ~,Q
int pivotIndex,l,r; z3]U%y(,
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stack[++top]=0; V{{x~Q9
stack[++top]=data.length-1; YqgW8EM
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while(top>0){ R`q!~8u
int j=stack[top--]; Oe`t!&v
int i=stack[top--]; <Tf;p8#
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pivotIndex=(i+j)/2; =*jcO119L
pivot=data[pivotIndex]; 4)I#[&f
v=VmiBq[
SortUtil.swap(data,pivotIndex,j); b`zf&Mn
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file://partition k#xpY!'7
l=i-1; `@7tWX0
r=j; s jm79/
do{ t;Om9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z >=Y
SortUtil.swap(data,l,r); ,6"n5Ks}
} 98^6{p
while(l SortUtil.swap(data,l,r); "'Uk0>d=_I
SortUtil.swap(data,l,j); %SCu29km
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if((l-i)>THRESHOLD){ 6l'y
stack[++top]=i; h>0<@UP
stack[++top]=l-1; %<yM=1~>
} M7,MxwZ0k
if((j-l)>THRESHOLD){ >N-%
stack[++top]=l+1; 4sjr\9IDC
stack[++top]=j;
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}
}8 _9V|E
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} yan[{h]EZ
file://new InsertSort().sort(data); KTt$Pt/.
insertSort(data); Xkom@F~]
} ton`ji\^
/** :g[x;Q[@
* @param data {LHe 6#
*/ ~-wJ#E3g
private void insertSort(int[] data) { tL{~O=
int temp; 0z7mre^Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7"p s#)O
} ]xEE7H]\h
} RI3{>|*
} ;bX
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} #%b()I_([
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归并排序: s$x] fO
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package org.rut.util.algorithm.support; -i5g 8t'
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import org.rut.util.algorithm.SortUtil; 5l0rw)
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/** 2EwWV0BS
* @author treeroot k=2l9C3Z
* @since 2006-2-2 Cf[F`pFM
* @version 1.0 jDXGm[U
*/ ?3,tG z)
public class MergeSort implements SortUtil.Sort{ OB^?cA>
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/* (non-Javadoc) oh0|2IrM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D*'M^k|1
*/ A>%UYA
public void sort(int[] data) { h^kNM8
int[] temp=new int[data.length]; GY]6#>D#7
mergeSort(data,temp,0,data.length-1); }, &,Dt
} vx}Z
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5|G3t`$pa
int mid=(l+r)/2;
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if(l==r) return ; :*:fun
mergeSort(data,temp,l,mid); kah3Uhr~
mergeSort(data,temp,mid+1,r);
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for(int i=l;i<=r;i++){ Cmx2/N
temp=data; F%Umau*1
} =z1o}ga=EA
int i1=l; m$mY<Q
int i2=mid+1; k5QD5/Ej
for(int cur=l;cur<=r;cur++){ 'oZn<c`
if(i1==mid+1) kJi&9
data[cur]=temp[i2++]; tr9Y1vxo{
else if(i2>r) &9w%n
data[cur]=temp[i1++]; y<%.wM]-J
else if(temp[i1] data[cur]=temp[i1++]; )]?egw5l
else I5yd )72
data[cur]=temp[i2++]; I=
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} 9'#.>Q>0=j
} ;AGs1j
3k*:B~1
} :CST!+)o
C1B3VG
改进后的归并排序: qvU$9cTY
G<-9U}~76
package org.rut.util.algorithm.support; yX.5Y|A<
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import org.rut.util.algorithm.SortUtil; (&S[R{=^j
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/** q\'P1~
* @author treeroot JRjMt-7H_
* @since 2006-2-2 C:GHP$/}
* @version 1.0 T~~[a|bLa
*/ z5&%T}$tJ
public class ImprovedMergeSort implements SortUtil.Sort { g;#KBxE
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private static final int THRESHOLD = 10; M|5]#2J_2
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%
/* >+jbMAYSq
* (non-Javadoc) acYoOW1G
* r>:L$_]L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *- IlF]
*/ RJ}yf|d-C
public void sort(int[] data) { fJ&<iD)6
int[] temp=new int[data.length]; [zTYiNa
mergeSort(data,temp,0,data.length-1); PMN2VzE4{
} 7hF,gl5
EOPS? @
private void mergeSort(int[] data, int[] temp, int l, int r) { t>6x)2,TC
int i, j, k; _{*$>1q
int mid = (l + r) / 2; @6YBK+"
if (l == r) Pm#x?1rAj
return; (o6[4( G
if ((mid - l) >= THRESHOLD) AJ?}Hel[0
mergeSort(data, temp, l, mid); E/8u'
else @>#{WI:"~
insertSort(data, l, mid - l + 1); e8ULf~I
if ((r - mid) > THRESHOLD) o~o6S=4,}
mergeSort(data, temp, mid + 1, r); cbu nq"
else NM1cyZ
insertSort(data, mid + 1, r - mid); C*EhexK,}
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for (i = l; i <= mid; i++) { FJd8s*
temp = data; A|taP$%
} {GQ
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for (j = 1; j <= r - mid; j++) { 8>VI$
temp[r - j + 1] = data[j + mid]; [Zt#
c C+
} uH
ny ]
int a = temp[l]; !M]%8NTt2
int b = temp[r]; :,%J6Zh?
for (i = l, j = r, k = l; k <= r; k++) { Q@e*$<3
if (a < b) { >FY&-4+v
data[k] = temp[i++]; Z(LxB$^l[
a = temp; @!":(@3[
} else { |z#m
data[k] = temp[j--]; Iu-'o
b = temp[j]; ;h,R?mU
} ;-9zMbte:
} 8!uL-_ Bn
} T@Ss&eGT2
VA=#0w
/** M2;%1^
* @param data Esz1uty
* @param l Q3BLL`W~
* @param i 9Q C"Od9H
*/ Y/^[qD
private void insertSort(int[] data, int start, int len) { |.Nr.4Yp
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); RP~vB#}
} 1#>&p%P!
} J@ktj(
} Z:UgozdC
} 5?3Isw`v2
5 Q6{(q|M
堆排序: MK-a$~<
l$qStL*8O
package org.rut.util.algorithm.support; YeRcf`
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import org.rut.util.algorithm.SortUtil; om".j
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/** `z3|M#r\;
* @author treeroot $ DDSN
* @since 2006-2-2 } g3HoFC
* @version 1.0 QmH/yy3.%
*/ qE#&)
public class HeapSort implements SortUtil.Sort{ qPXANx<^
zdLVxL>87
/* (non-Javadoc) 2I]]WBW#:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ |'U,/
public void sort(int[] data) { ";)r*UgR{B
MaxHeap h=new MaxHeap(); &\[Qm{lN
h.init(data); I%;Rn:zl
for(int i=0;i h.remove(); ``(}4a
System.arraycopy(h.queue,1,data,0,data.length); [^?13xMb
} U OR _M5
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private static class MaxHeap{ yfSiByU
DC$7B`#D
void init(int[] data){ <S\;k@f
this.queue=new int[data.length+1]; wUru1_zjO
for(int i=0;i queue[++size]=data; Ud>`@2
fixUp(size); !sg%6H?}
} HCX!P4Hj
} j}|N^A_ S
`"xk,fVYd
private int size=0; xZ^ywa_
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private int[] queue; S}zC3
PU^[HC*K
public int get() { _-@ZOhw&
return queue[1]; n\Z^K
} tv 4s12&
Fy 4Tvg
public void remove() { *oEv ,I_
SortUtil.swap(queue,1,size--); /J1S@-
fixDown(1); 9M1a*frxZ
} ((-aC`
file://fixdown -;+m%"k5
private void fixDown(int k) { X!U]`Qh
int j; _wm~}_Q
while ((j = k << 1) <= size) { -/M9 vS
if (j < size %26amp;%26amp; queue[j] j++; 9Tzc(yCY
if (queue[k]>queue[j]) file://不用交换 "NxOOLL
break; J*}VV9H
SortUtil.swap(queue,j,k); i'Y-V]->
k = j; <8iYL`3
} g/OI|1a
} Xy[}G p
private void fixUp(int k) { Z -pyFK\
while (k > 1) { jmRhAJV
int j = k >> 1; kjx>
if (queue[j]>queue[k]) @AvM
break; .>k=A|3G
SortUtil.swap(queue,j,k); AU0$A403
k = j; Q8 -3RgAw
} Ezi' 2Sc
} "I5uDFZR&
rQ=xcn[A
} OF-E6b c
w>v5oy8s-
} D35m5+=I
M]J[6EW
SortUtil: h^['rmd
9TqnzD
package org.rut.util.algorithm; W=~id"XtJ
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import org.rut.util.algorithm.support.BubbleSort; M_tj7Q3
W
import org.rut.util.algorithm.support.HeapSort; vAi"$e
import org.rut.util.algorithm.support.ImprovedMergeSort; vz6SCGg,
import org.rut.util.algorithm.support.ImprovedQuickSort; JR/W9i
import org.rut.util.algorithm.support.InsertSort; ktN%!Mh\
import org.rut.util.algorithm.support.MergeSort; b+W)2rFO
import org.rut.util.algorithm.support.QuickSort; ah 4kA LO
import org.rut.util.algorithm.support.SelectionSort; *]FgfttES
import org.rut.util.algorithm.support.ShellSort; 'n>K^rA
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/** Mg#`t$u
* @author treeroot U%Dit
* @since 2006-2-2 j -#E?&2
* @version 1.0 vZ:G8K)o(
*/ w-J"zC
public class SortUtil { <H<!ht%q3
public final static int INSERT = 1; \.5F](:
public final static int BUBBLE = 2; :]EP@.(
public final static int SELECTION = 3; =\M)6"}y}
public final static int SHELL = 4; }bZ
8-v
public final static int QUICK = 5; j0AwL7
public final static int IMPROVED_QUICK = 6; VxNXd?
public final static int MERGE = 7; uH$oGY
public final static int IMPROVED_MERGE = 8; aZP2R"
public final static int HEAP = 9; z|uOJ0uK
]n~yp5Nbr
public static void sort(int[] data) { eUYZxe :6
sort(data, IMPROVED_QUICK); P=2wkzeJj
} w(/7Jt$
private static String[] name={ Og+)J9#
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >Q&CgGpW$
}; b~1iPaIh
ya#RII']
private static Sort[] impl=new Sort[]{ iA]DE`S
new InsertSort(), n4Vwao/9x
new BubbleSort(), 64SW
new SelectionSort(), \e_IFISC
new ShellSort(), {JXf*IJ
new QuickSort(), kl=xu3j
new ImprovedQuickSort(), dQ,Q+ON>
new MergeSort(), N5yJ'i~,M
new ImprovedMergeSort(), Qy/uB$q{A
new HeapSort() #kj~G]QA
}; )5U!>,fT
L"4]Tm>zq
public static String toString(int algorithm){ \Ps5H5Qk;
return name[algorithm-1]; VDG|>#[!
} &0s*PG
lbd(j{h>4
public static void sort(int[] data, int algorithm) { H*GlWgfG
impl[algorithm-1].sort(data); w:v=se"U
} f#1/}Hq/I
{y1q7Z.M
public static interface Sort { b(/j\NWC
public void sort(int[] data); 3+e4e
} 5PDSA*
,}KwP*:Z
public static void swap(int[] data, int i, int j) { |hc\jb
int temp = data; l(#1mY5!q8
data = data[j]; grc:Y
data[j] = temp; >}CEN
} @`6}`k
} X6'H`E[