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。 OxYAM,F
插入排序: -iS^VzI|I
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package org.rut.util.algorithm.support; +8C}%6aX
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import org.rut.util.algorithm.SortUtil; PMpq>$6b7
/** 0F@ ~[W|2
* @author treeroot a_V\[V{R=
* @since 2006-2-2 F_(~b
* @version 1.0 s*[
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*/ .whi0~i
public class InsertSort implements SortUtil.Sort{ uE41"?GS
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/* (non-Javadoc) >7PQOQMW'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MzX&|wimb
*/ =T,Q7Dh
public void sort(int[] data) { 9-/q-,
int temp; T{k_3[{0o
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gk{ 'U
} VaY#_80$s
} k9f|R*LM
} (0H=f6N
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} mLqqo2u
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冒泡排序: [9${4=Kq
J?w_DQa
package org.rut.util.algorithm.support; XZ~kXE;B(
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import org.rut.util.algorithm.SortUtil; XQ]vJQYIR
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/** \0x>#ygX
* @author treeroot } Xo#/9
* @since 2006-2-2 o6px1C:
* @version 1.0 @T~XwJ~
*/ dazNwn
public class BubbleSort implements SortUtil.Sort{
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/* (non-Javadoc) -0d9,,c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <7VLUk}
*/ S(Af o`
public void sort(int[] data) { |E7J5ha
int temp; \Q|-Npw
for(int i=0;i for(int j=data.length-1;j>i;j--){ "D
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if(data[j] SortUtil.swap(data,j,j-1); RJ'[m~yl5X
} #\w N2`" W
} \jwG*a
} 1H-Y3G>jN
} U
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Q38+`EhLA
} ng3ZK
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选择排序: ~j'D%:[+VH
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package org.rut.util.algorithm.support; Q;$k?G=l
xrPZy*Y,
import org.rut.util.algorithm.SortUtil; Xx{| [2`
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/** b^$`2m-?@f
* @author treeroot ZLT?G
* @since 2006-2-2 V|MHDMD=
* @version 1.0
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*/ X$>F78e*
public class SelectionSort implements SortUtil.Sort { \R<MQ#
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#{}?=/nJ~-
/* (<eLj Q
* (non-Javadoc) N l@G\_
* iAk:CJ{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9jTBLp-i#N
*/ ->b5"{t
public void sort(int[] data) { [t?tLUg|6
int temp; "Xv} l@
for (int i = 0; i < data.length; i++) { 9 8|sWI3B
int lowIndex = i; o1ZVEvp
for (int j = data.length - 1; j > i; j--) { %^@l5h.lqB
if (data[j] < data[lowIndex]) { ^YLC {V
lowIndex = j; o99ExQ.
} <{kPa_`'
} _u[tv,
SortUtil.swap(data,i,lowIndex); 8OZj24*'DS
} <-v
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} m[}k]PB>
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} rE+B}O
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Shell排序: 2R&\qZ<
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package org.rut.util.algorithm.support; |#2WN-
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import org.rut.util.algorithm.SortUtil; SUc%dpXZa
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/** W~
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* @author treeroot i<"lXu
* @since 2006-2-2 Hh1_zd|
* @version 1.0 XGB\rfvS
*/ @ b!]Jw
public class ShellSort implements SortUtil.Sort{ .yj@hpJM
4/b.;$
/* (non-Javadoc) ,W}:vdC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ( V4Ppg
*/ y0d=
public void sort(int[] data) { eA4D.7HDK
for(int i=data.length/2;i>2;i/=2){ ,m=G9QcN
for(int j=0;j insertSort(data,j,i); EB[T 5{
} N(7 XILC
} Z\nDR|3
insertSort(data,0,1); pN[WYM?[
} vha9,5_
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/** M@cFcykK
* @param data |T|m5V'l
* @param j mXRkR.zu+
* @param i 9lb?%UFe
*/ 1,fR kQ
private void insertSort(int[] data, int start, int inc) { r^~+<"
int temp; >5CK&6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); e=0]8l>\V
} %y RGN
} XRV]u|w=g
} CPOHqK`k
XQy`5iv
} zV&l^.
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快速排序: 9hA`I tS
hp~q!Q1=
package org.rut.util.algorithm.support; cU6*y!}9
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import org.rut.util.algorithm.SortUtil; pa!BJ]~
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/** z5jw\jBD
* @author treeroot TPN+jK
* @since 2006-2-2 jKq*@o~}
* @version 1.0 [|Qzx w9
*/ d6J/)nl
public class QuickSort implements SortUtil.Sort{ LCB-ewy#E
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/* (non-Javadoc) RrMEDMhk6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nJ;^Sz17Q
*/ sM-,95H
public void sort(int[] data) { VhO%4[Jl
quickSort(data,0,data.length-1); l!tR<$|
} IbI0".o
private void quickSort(int[] data,int i,int j){ GKt."[seV
int pivotIndex=(i+j)/2; 36=aahXd\
file://swap (uC8M,I\
SortUtil.swap(data,pivotIndex,j); fu5L)P^T
q/ljH_-
int k=partition(data,i-1,j,data[j]); -ZaeX]^&Q\
SortUtil.swap(data,k,j); @ZJL]TO
if((k-i)>1) quickSort(data,i,k-1); ?4b0\ -
if((j-k)>1) quickSort(data,k+1,j); -Uo11'{
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} ,#)d
/** Lk(ESV;r
* @param data 8c9HJ9vk
* @param i ~+Gh{,f
* @param j WE) *~5
* @return *~^63Nx!
*/ b >D
private int partition(int[] data, int l, int r,int pivot) { uVEJV |^/
do{ 27SHj9I
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hN3FH#YO
SortUtil.swap(data,l,r); r)^sHpK:`
} : B^"V\WE
while(l SortUtil.swap(data,l,r); |N&t
return l; 0-Mzb{n5
} '9}&@;-_
i7#4&r
} DPI[~
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改进后的快速排序: tj13!Cc}e`
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package org.rut.util.algorithm.support; vJ&_-CX
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import org.rut.util.algorithm.SortUtil; 8US#SI'x
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/** -EiTP:A
* @author treeroot J
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* @since 2006-2-2 h.EI(Ev"GN
* @version 1.0 H,(vTthd
*/ #~
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public class ImprovedQuickSort implements SortUtil.Sort { `p()ko
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private static int MAX_STACK_SIZE=4096; Q!+AiSTU
private static int THRESHOLD=10; vG_R( ]d
/* (non-Javadoc) @62,.\F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GAj%o]}u
*/ Blxa0&3
public void sort(int[] data) { od)TQSo
int[] stack=new int[MAX_STACK_SIZE]; &s".hP6
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int top=-1; cUR :a@
int pivot; ~(R=3
int pivotIndex,l,r; 5 bI:xL}
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stack[++top]=0; -.h)CM@L
stack[++top]=data.length-1; vD#U+
^\ [p6>
while(top>0){ l eC!Yj
int j=stack[top--]; R/~!km
int i=stack[top--]; t.(
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pivotIndex=(i+j)/2; E;a,].
pivot=data[pivotIndex]; *Ypn@YpSp
"
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SortUtil.swap(data,pivotIndex,j); ( cs
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file://partition NW[K/`-CTH
l=i-1; 0"R>:f}
r=j; DsMo_m/"1
do{ H7+"BWc
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nqy*>X`
SortUtil.swap(data,l,r); /WnCAdDgZ
} F*KQhH7Gf
while(l SortUtil.swap(data,l,r); FSM M
SortUtil.swap(data,l,j); Ph=NH8
l2LQV]l
if((l-i)>THRESHOLD){ :Qge1/
stack[++top]=i; FOG{dio
stack[++top]=l-1; x$d[Ovw-
} h?xgOb!4
if((j-l)>THRESHOLD){ p7|I>8ur.
stack[++top]=l+1; d'';0[W)
stack[++top]=j; }k }=e
} 3'uXU<W!
@7nZjrH
} Jinh#iar
file://new InsertSort().sort(data); PLz{EQ[cV
insertSort(data); {?`rGJ{f
} (7g"ppf
/** _mqU:?Q5
* @param data bL7Gkbs&|
*/ Cu+p!hV
private void insertSort(int[] data) { {]dxFhe)
int temp; 3=
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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); ,!{8@*!=s
} =p;cJ%#2]'
} d_`MS@2
} rnK]3Ust
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} ?g ,s<{
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归并排序: A;d@NOI#,K
|qX?F`
package org.rut.util.algorithm.support; a[K&;)
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import org.rut.util.algorithm.SortUtil; +ayC0
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/** J&aN6 l?
* @author treeroot J2Dn
* @since 2006-2-2 @(#vg\UH
* @version 1.0 .s<0}<Aq>
*/ -- %XkO
public class MergeSort implements SortUtil.Sort{ XCI
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/* (non-Javadoc) ]0R*F30]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y!M0JSaM
*/ I7U/={[J
public void sort(int[] data) { 3P0z$jh"H
int[] temp=new int[data.length]; E 3'I;
mergeSort(data,temp,0,data.length-1); Pn9".
} WHC/'kvF
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private void mergeSort(int[] data,int[] temp,int l,int r){ `<tRfl}qs
int mid=(l+r)/2; kqeEm{I
if(l==r) return ; c^w^'<
mergeSort(data,temp,l,mid); 4pL'c@'
mergeSort(data,temp,mid+1,r); vl/!w2
for(int i=l;i<=r;i++){ }[eUAGhDU
temp=data; Zz} o t
} PY.HZ/#d
int i1=l; Kl. *Q
int i2=mid+1; 8U@f/P
for(int cur=l;cur<=r;cur++){ t`6]eRR
if(i1==mid+1) RFbf2s\t
data[cur]=temp[i2++]; ;}Jv4Z
else if(i2>r) ~m fG
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data[cur]=temp[i1++]; Q9cSrU[$
else if(temp[i1] data[cur]=temp[i1++]; qXtC7uNj$
else cpk\;1&t
data[cur]=temp[i2++]; !mK()# 6
} Sd6O?&(
} 7Q!ksp
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} Py*WHHO
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改进后的归并排序: j*QdD\)
ZW;Ec+n_K
package org.rut.util.algorithm.support; )L&y@dy)
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import org.rut.util.algorithm.SortUtil; |r+ x/,2-
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/** 76T7<.S
* @author treeroot ~;oXLCL0})
* @since 2006-2-2 )y]Dmm
* @version 1.0 _!2lnJ4+5
*/ |4DN2P
public class ImprovedMergeSort implements SortUtil.Sort { pS8\ B
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private static final int THRESHOLD = 10; ;C-ds
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/* FtJaX])b
* (non-Javadoc) !Mw/j`*
* ,xU#uyB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S(3h{Y"#
*/ E0qJ.v
public void sort(int[] data) { GpPM ?
int[] temp=new int[data.length]; i?B<&'G
mergeSort(data,temp,0,data.length-1); T
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} 7s%D(;W_Mo
Q7u|^Gu,5
private void mergeSort(int[] data, int[] temp, int l, int r) { #c:@oe4v
int i, j, k; ~0CNCP
int mid = (l + r) / 2; Y1lUO[F j
if (l == r) \X
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return; Vw;iE=L
if ((mid - l) >= THRESHOLD) <
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mergeSort(data, temp, l, mid); !9gpuS[
else ^%*qe5J
insertSort(data, l, mid - l + 1); y
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if ((r - mid) > THRESHOLD) yPfx!9B
mergeSort(data, temp, mid + 1, r); yuC"V'
else Yjo$vQi
insertSort(data, mid + 1, r - mid); <nJGJ5JJ
QH><!
sa
for (i = l; i <= mid; i++) { VP< zOk7
temp = data; 6MOwn*%5k
} 2L^/\!V#
for (j = 1; j <= r - mid; j++) { >W+,(kAS
temp[r - j + 1] = data[j + mid]; &LM@xt4"^[
} VXCB.C"
int a = temp[l]; 53/$8=
int b = temp[r]; ZWGelZP~
for (i = l, j = r, k = l; k <= r; k++) { W+u@UJi
if (a < b) { +;!^aNJ,
data[k] = temp[i++]; eAO@B
a = temp; G>^= Bm_$
} else { qh bagw~
data[k] = temp[j--]; .\H-?6R^
b = temp[j]; 5[\g87\
} bLl
?!G.
} /E/6(c
} 6&+dpr&c~=
\Uh/(q7
/** 0F uj-q
* @param data dw#pObH|`
* @param l HziQ%QR
* @param i B_#M)d
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*/ `!N.1RP _
private void insertSort(int[] data, int start, int len) { Wv5=$y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >mQD/U
} a%y*e+oM
} /p;OZf]
} GQ
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} rSDI.m
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堆排序: 3I'7+?@@l
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package org.rut.util.algorithm.support; xz:
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import org.rut.util.algorithm.SortUtil; |1kA6/
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/** CZy!nR!
* @author treeroot _7v4S/V
* @since 2006-2-2 R(>
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* @version 1.0 5 3+C;]J
*/ ixy:S1pI
public class HeapSort implements SortUtil.Sort{ o7tlkSZ
l [ m_<1L
/* (non-Javadoc) S41S+#7t*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <F}j;mX
*/ Lz9|"F"V
public void sort(int[] data) { iMM9a;G+
MaxHeap h=new MaxHeap(); j~rW
2(
h.init(data); NxH%%>o>
for(int i=0;i h.remove(); xE_~.EoB
System.arraycopy(h.queue,1,data,0,data.length); </9c=GoJ
} |I]G=.*E
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private static class MaxHeap{ ).Z
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f U<<GK70
void init(int[] data){ iMYJVB=
this.queue=new int[data.length+1]; 1jK2*y
for(int i=0;i queue[++size]=data; \Pfm>$Ib=
fixUp(size); L$Xkx03lz>
} }lkU3Pf1U
} A;xH{vo{
sz7<u|
private int size=0; {Y+e|B0
&4t=Y`]SL
private int[] queue; }P!:0w3
?S)Pv53>}
public int get() { 4fL>Ou[YuX
return queue[1]; TD ;u"
} OS~Z@'Eg
BMzS3;1_
public void remove() { d^Cv9%X
SortUtil.swap(queue,1,size--); 8N<2RT8W
fixDown(1); .4z_ohe
} ^6UE/4x!y
file://fixdown pmUC4=&e
private void fixDown(int k) { )\e0L/K@
int j; O2Y1D`&5
while ((j = k << 1) <= size) { 9j5k=IXg#a
if (j < size %26amp;%26amp; queue[j] j++; Y>i
Qp/k:
if (queue[k]>queue[j]) file://不用交换 ;k1VY
Ie}
break; #%CB`l
SortUtil.swap(queue,j,k); <7%#RJw e
k = j; Zh:@AFz:R
} W1}d6Sbg
} utdus:B#0
private void fixUp(int k) { 0d,&)
while (k > 1) { |@D%y&
int j = k >> 1; CrGDo9JdvT
if (queue[j]>queue[k]) U4NA'1yo
break; P#KTlH
SortUtil.swap(queue,j,k); mnYzn[d3U
k = j; c=B!\J<1
} }1Hy[4B(k\
} ~Ctq
{tXyz[;i1}
} Wh?3vZ^
T ^`R
} *kGk.a=
|r`0< `
SortUtil: FPAj}as
p?<T
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package org.rut.util.algorithm; eeUEqM$7EX
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import org.rut.util.algorithm.support.BubbleSort; I!p[:.t7
import org.rut.util.algorithm.support.HeapSort; U7xQ 5lph
import org.rut.util.algorithm.support.ImprovedMergeSort; -
[vH4~
import org.rut.util.algorithm.support.ImprovedQuickSort; .gwT?O,
import org.rut.util.algorithm.support.InsertSort; om0g'Qa
import org.rut.util.algorithm.support.MergeSort; >`
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import org.rut.util.algorithm.support.QuickSort; 35#"]l"
import org.rut.util.algorithm.support.SelectionSort; ]#O~lq
import org.rut.util.algorithm.support.ShellSort; QL@}hw.F
8Vm)jnM
/** 4V
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* @author treeroot -[A=\]RfJ
* @since 2006-2-2 x1.yi-
* @version 1.0 3AC/;WB9
*/ uWr vkLGN
public class SortUtil { Qvhy9Cr;
public final static int INSERT = 1; nxx&aq(._
public final static int BUBBLE = 2; N9AM% H$7
public final static int SELECTION = 3; :W}M$5 |
public final static int SHELL = 4; X|pOw,"
public final static int QUICK = 5; 3Yf!H-(\uB
public final static int IMPROVED_QUICK = 6; S4>1 d-
public final static int MERGE = 7; K1|xatx1V
public final static int IMPROVED_MERGE = 8; ?wj1t!83
public final static int HEAP = 9; L%[b6<
:8Ql(I
public static void sort(int[] data) { I#:4H2H6
sort(data, IMPROVED_QUICK); -*0U&]T
} |s[k= /~"
private static String[] name={ UV)!zgP
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" w;DRC5V>
}; }Lb[`H,}A
~i9'9PHX@
private static Sort[] impl=new Sort[]{ `^CIOCK%
new InsertSort(), 05[k@f$n
new BubbleSort(), ,=t}|!jx
new SelectionSort(), {edjvPlk
new ShellSort(), kiR+ Dsl
new QuickSort(), aL0,=g%
new ImprovedQuickSort(), <.c#l':
new MergeSort(), i{nFk',xX
new ImprovedMergeSort(), Xp_G9I,+
new HeapSort() %D<>F&h
}; {w VJv1*l
&/]g@^h9
public static String toString(int algorithm){ )p+6yH
return name[algorithm-1]; \m3ca-Y
} 0r'<aA`=I
4X:S#z
public static void sort(int[] data, int algorithm) { KIHr%
impl[algorithm-1].sort(data); ^@AIXBe
} ]c$)0O\O
;{K/W.R
public static interface Sort { A@#D_[~
public void sort(int[] data); YhFd0A?]
} 0%GQXiy
f-l(H="e
public static void swap(int[] data, int i, int j) { }*M>gvPo
int temp = data; ~"#[<d
data = data[j]; 1usLCG>w{
data[j] = temp; 9/I|oh_
G
} zQyt 1&!
} 5"I8ric