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。 (n05MwKu\
插入排序: CDQ}C=4
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package org.rut.util.algorithm.support; ^rMkCA@;TZ
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import org.rut.util.algorithm.SortUtil; ,OsFv}v7
/** 8C#R
* @author treeroot jwgXq(
* @since 2006-2-2 BK]bSj
* @version 1.0 V~tq
_
*/ w?d~c*4+
public class InsertSort implements SortUtil.Sort{ nPj%EKdY4
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/* (non-Javadoc) 4pq@o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X(U
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*/ %| }obiV)
public void sort(int[] data) { NDEltG(
int temp; Mp^%.m
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q<3=s6@T
} Mdsn"Y V
} Jiyt,D*wX
} OW-[#r
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} XZYpU\K
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冒泡排序: d!5C$C/x
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package org.rut.util.algorithm.support; BoE;,s>]NW
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import org.rut.util.algorithm.SortUtil; JziuwL5,
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/** 2`tdH|Z`
* @author treeroot "5"6mw?
* @since 2006-2-2 (=}cc
* @version 1.0 `[p*qsp_
*/ l)<
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public class BubbleSort implements SortUtil.Sort{ aN?{MA\
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s!esk%h{K
*/ !'o5X]s
public void sort(int[] data) { 19Xc0ez
int temp;
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for(int i=0;i for(int j=data.length-1;j>i;j--){ HgPRz C
if(data[j] SortUtil.swap(data,j,j-1); o^hI\9
} 17AJT
} 3o&PVU?Q
} j/`-x
} e>vV8a\
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} 9ot A5I^v
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选择排序: \>0%E{CR
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package org.rut.util.algorithm.support; 6FNs4|(d
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import org.rut.util.algorithm.SortUtil; "| 0g 1rd
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/** .VG$`g"
* @author treeroot V #["Z}
* @since 2006-2-2 ,S5tkTa
* @version 1.0 !Z[dK{f"
*/ PPSf8-MLW
public class SelectionSort implements SortUtil.Sort { <3C~<
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/* ~WXT0-,
* (non-Javadoc) 7?a@i;E<
* >=Hm2daN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Mq0QQ42
*/ 2c`m8EaJ
public void sort(int[] data) { v'nM=
int temp; X_GR{z%
for (int i = 0; i < data.length; i++) { |g<1n
int lowIndex = i; :+,>0%
for (int j = data.length - 1; j > i; j--) { T&Z%=L_Q
if (data[j] < data[lowIndex]) { ^Y z.,!B[
lowIndex = j; [~03Z[_"/
} KdY3
} #U45;idp
SortUtil.swap(data,i,lowIndex); sk !92mQ
} q}gj.@Q"
} dzJ\+
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} EV{kd.=f
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Shell排序: 4|*b{Ni
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package org.rut.util.algorithm.support; ~wG.'d]
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import org.rut.util.algorithm.SortUtil; Ncr38~;w
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/** PhBdm'
* @author treeroot v
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* @since 2006-2-2 (O {5L(
* @version 1.0 <Wc98m
*/ 'PPVM@)fU
public class ShellSort implements SortUtil.Sort{ BzBij^h
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/* (non-Javadoc) .3WDtVE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b<,Z^Z_
*/ Y@x }b{3
public void sort(int[] data) { ]-h$CJSY
for(int i=data.length/2;i>2;i/=2){ YI05?J}
for(int j=0;j insertSort(data,j,i); Z*
eb
} %qA@)u53
} '}\{4Qst
insertSort(data,0,1); sute%6yM
} n+Ofbiz@
%gj's-!!
/** )6mx\t
* @param data cx%[hM09
* @param j Z#7T!/28
* @param i c@u)m}V
*/ `H+~LVH
private void insertSort(int[] data, int start, int inc) { w5*?P4P
int temp; 8BZTHlUB
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iC-WQkQY
} XrR@cDNx{
} ;#c|ZnX
} 86Q\G.h7
;\(Wz5Ok&J
} bg.f';C
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快速排序: S%KY%hUt
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package org.rut.util.algorithm.support; Cb}hE
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import org.rut.util.algorithm.SortUtil; q~*3Bk~
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/** |rJ1/T.9
* @author treeroot _nw=^zS
* @since 2006-2-2 ERxA79
* @version 1.0 *&p `8:
*/ +$i-"^
public class QuickSort implements SortUtil.Sort{ ,arFR'u>
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/* (non-Javadoc) zA+&V7bvy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nLK%5C
*/ \m @8$MK
public void sort(int[] data) { ?^iX%
quickSort(data,0,data.length-1); 4^H(p
} pT Yq#9
private void quickSort(int[] data,int i,int j){ cU}j
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int pivotIndex=(i+j)/2; `>:ozN#)\
file://swap b_88o-*/
SortUtil.swap(data,pivotIndex,j); @kU{
hpJ[VKe
int k=partition(data,i-1,j,data[j]); d ; (&_;
SortUtil.swap(data,k,j); s_Y1rD*B
if((k-i)>1) quickSort(data,i,k-1); S0.
if((j-k)>1) quickSort(data,k+1,j); a<+Qw'
c-nBB
} 4-^LC<}k
/** X\3IY:Q@T
* @param data cVv>"oF;~*
* @param i F 7+Gt
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* @param j (Bs0/C
* @return arf`%9M
*/ ) *:<3g!
private int partition(int[] data, int l, int r,int pivot) { 12)~PIaF
do{ ju8mO&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2^ 'X
SortUtil.swap(data,l,r); zRyZrt,%&
} yC.ve;lG
while(l SortUtil.swap(data,l,r); }N;c
return l; :32
} @+A`n21,O
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} ]X4
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改进后的快速排序: _%Q\G,a;
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package org.rut.util.algorithm.support; vPuPSE%M
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import org.rut.util.algorithm.SortUtil; = !D<1<
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/** "Yw-1h`fR
* @author treeroot kE QT[Lo
* @since 2006-2-2 mNw|S*C
* @version 1.0 GCul6,w
*/ Q7]:vs)%
public class ImprovedQuickSort implements SortUtil.Sort { <rc3&qmd
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private static int MAX_STACK_SIZE=4096; nIVPh99
private static int THRESHOLD=10; _$/(l4\T[
/* (non-Javadoc) V.J[Uwf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d#7 z
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*/ +:w9K!31-
public void sort(int[] data) { q[]EVs0$ew
int[] stack=new int[MAX_STACK_SIZE]; SZJ~ktXC-V
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int top=-1; Eugt~j3
int pivot; \2i4]V
int pivotIndex,l,r; 2&fIF}vk>m
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stack[++top]=0; .(Q3M0.D
stack[++top]=data.length-1; ^!H8"CdC3
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while(top>0){ %Bg}
a
int j=stack[top--]; o2? [*pa
int i=stack[top--]; K'N`rx.7
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pivotIndex=(i+j)/2; 2vWJ|&|p
pivot=data[pivotIndex]; >69xl^Gd
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SortUtil.swap(data,pivotIndex,j); /Kb7#uq
4A0R07"
file://partition e#L/
l=i-1; e$QX?y .
r=j; k{Yj!C>
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do{ 4VLrl8$K
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C$ cX{hV
SortUtil.swap(data,l,r); S*rgYe!E
} #
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while(l SortUtil.swap(data,l,r); V_Kpb*3
SortUtil.swap(data,l,j); 1R9hA7y&,/
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if((l-i)>THRESHOLD){ mJ0nyjX^
stack[++top]=i; ?1}1uJMj-
stack[++top]=l-1; j['Z|Am"l
} +#O?a`f
if((j-l)>THRESHOLD){ JE,R[` &
stack[++top]=l+1; E,E:W uB
stack[++top]=j; D8slSX`6j
} O-:#Q(H!
yJ8WYQQMG
} dsqqq,>Q
file://new InsertSort().sort(data); f33'2PYl
insertSort(data); @P+k7"f
} @m! ~![
/** %stZ'IX
* @param data a?E]-Zf
*/ YTxUKE:
private void insertSort(int[] data) { Rj9ME,u
int temp; "?lirOD
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yi%A*q~MT
} g;w4:k)U
} ^#e:q
} .z7XYmv
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} ^sd+s ~xx
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归并排序: K$(&Qx}
3WS`,}
package org.rut.util.algorithm.support; !TP8LQ
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import org.rut.util.algorithm.SortUtil;
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/** j(6:
* @author treeroot P
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* @since 2006-2-2 QsI#Ae,O#;
* @version 1.0 zTrAk5E
*/ 3Gf^IV-
public class MergeSort implements SortUtil.Sort{ A_T-]YQ
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/* (non-Javadoc) b_cnVlN[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J7t5B}}
*/ #*#4vMk<
public void sort(int[] data) { 7J./SBhB
int[] temp=new int[data.length]; |f'U_nE#R/
mergeSort(data,temp,0,data.length-1); o+`W
} bP&o]?dN
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x
private void mergeSort(int[] data,int[] temp,int l,int r){ =1)yI>2e%}
int mid=(l+r)/2; 3SVI|A5(d
if(l==r) return ; mN@)b+~(S
mergeSort(data,temp,l,mid); C9x'yBDv
mergeSort(data,temp,mid+1,r); Q[scmP^$^
for(int i=l;i<=r;i++){ Df02#493
temp=data; 9c8zH{T_{
} *_b4j.)ax,
int i1=l; b*qkox;j
int i2=mid+1; $1.iMHb
for(int cur=l;cur<=r;cur++){ Fp4eGuWH#
if(i1==mid+1) f!e8xDfA
data[cur]=temp[i2++]; !(F+~,
else if(i2>r) (\.[pj%-O
data[cur]=temp[i1++]; [yL%+I
else if(temp[i1] data[cur]=temp[i1++]; KM< +9`
else >FFZ8=
data[cur]=temp[i2++]; ?tE}89c
} Wt()DG|[
} ,W5pe#n
a-x8LfcbF
} l!Z>QE`.S
: RnjcnR
改进后的归并排序: KMhoG.$Ra
`r'q(M
package org.rut.util.algorithm.support; XJ?|\=]
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import org.rut.util.algorithm.SortUtil; u!oHP
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/** X<K[`
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* @author treeroot NS-u,5Jt
* @since 2006-2-2 Ud^+a H
* @version 1.0 qi`*4cas*A
*/ B@e,3:
public class ImprovedMergeSort implements SortUtil.Sort { X}0NeG^'O
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private static final int THRESHOLD = 10; jWiZ!dtUZ
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x
/* `x~k}
* (non-Javadoc) p*_g0_^
* $%`OJf*k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )9##mUt'}
*/ 6.~HbN
public void sort(int[] data) { !sEI|47{
int[] temp=new int[data.length]; fW!~*Q
mergeSort(data,temp,0,data.length-1);
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} BRG1/f
d
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private void mergeSort(int[] data, int[] temp, int l, int r) { 35) ]R`f
int i, j, k; dwv xV$Nt
int mid = (l + r) / 2; rl'YyO}2
if (l == r) :IV4]`
return; ;H_yNrwA
if ((mid - l) >= THRESHOLD) # Fw<R'c
mergeSort(data, temp, l, mid); KArf:d
else M
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insertSort(data, l, mid - l + 1); )J<Li!3
if ((r - mid) > THRESHOLD)
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mergeSort(data, temp, mid + 1, r); @]6)j&
else zOLt)2-<
insertSort(data, mid + 1, r - mid); y^Oj4Y:
8^\DQ&D
for (i = l; i <= mid; i++) { '|':W6m,
temp = data; gEIjG
} r-^Ju6w{
for (j = 1; j <= r - mid; j++) { 7n,nODbJ
temp[r - j + 1] = data[j + mid]; {G&K_~Vj
} YUfuS3sX}
int a = temp[l]; ,(N&%
int b = temp[r]; !9356) cV
for (i = l, j = r, k = l; k <= r; k++) { rVzjLkN^
if (a < b) { }/x `w
data[k] = temp[i++]; a^iefwsNc
a = temp; $.R$I&U
} else { \! Os!s
data[k] = temp[j--]; o
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b = temp[j]; ,COSpq]6
} D2E~c? V
} S-gL]r3G8
} ?#ndMv!$
;Y?7|G97*S
/** {(o\G"\<XY
* @param data , =IbZ
* @param l &?9p\oY[
* @param i SY`NZJK
*/ !vr">@}K
private void insertSort(int[] data, int start, int len) { Os*,@N3t
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bnWIB+%_
} ^>.?kh9z
} K*'(;1AiW
} Q5;Km1(
} r9%4q4D?>9
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堆排序: llhJ,wD
igOjlg_Q
package org.rut.util.algorithm.support; zbddn4bW9
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8E
import org.rut.util.algorithm.SortUtil; ^.mQ~F
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/** &w*.S@ ;
* @author treeroot 6f?5/hq
* @since 2006-2-2 ,'= Y
* @version 1.0 AQ32rJT8c`
*/ 1jh^-d5
public class HeapSort implements SortUtil.Sort{ -1Lh="US
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/* (non-Javadoc) Sl:Qq!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KG'4;Z5J
*/ !Lb9KDk
public void sort(int[] data) { Kk!D|NKLC
MaxHeap h=new MaxHeap(); #i7!
h.init(data); ~uq J@#o{
for(int i=0;i h.remove(); 1MRt_*N4
System.arraycopy(h.queue,1,data,0,data.length); xh#ef=Bw
} @0A0\2
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private static class MaxHeap{ 8|d lt$
j08G-_Gjn
void init(int[] data){ Wgq*| teW
this.queue=new int[data.length+1]; ='pssdB
for(int i=0;i queue[++size]=data; Xleoh2&M
fixUp(size); :)q/8 0@
} TiCp2Rsz
}
b?CmKiM%
W+H27qsv
private int size=0; Al$"k[-Uin
x,2+9CCU
private int[] queue; {p9y{$
LdU, 32
public int get() { wQ2'%T|t
return queue[1]; JR$Dp&]I
} /!eC;qp;[
{3$ge
public void remove() { &Km?(%?
SortUtil.swap(queue,1,size--); [\V]tpl!
fixDown(1); .J%}ROm
} 4eU};Pv
file://fixdown '@AK0No\W
private void fixDown(int k) { JXftQOn
int j; CYEqH2"3
while ((j = k << 1) <= size) { |42E'zH&
if (j < size %26amp;%26amp; queue[j] j++; u&STGc[
if (queue[k]>queue[j]) file://不用交换 s8WA@)L
break; }qc[ysDK]
SortUtil.swap(queue,j,k); zIH[
:
k = j; d7It}7@9
} W2%(a0p
} '#4ya=Ww
private void fixUp(int k) { oE"!
while (k > 1) { 6IPhy.8
int j = k >> 1; 4oT25VH
if (queue[j]>queue[k]) zXbTpm
break; .m;1V6
SortUtil.swap(queue,j,k); lh7{2WQ
k = j; T_[W=9
} >`5iq.v
} fyYv}z
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} k1$|vzMh
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} 9V.)=*0hp
b\UQ6V
SortUtil: m1]rLeeEt
zST#X}
package org.rut.util.algorithm; VXn]*Mo
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import org.rut.util.algorithm.support.BubbleSort; Rk"VFe>r
import org.rut.util.algorithm.support.HeapSort; &I:X[=;g
import org.rut.util.algorithm.support.ImprovedMergeSort; 5}*aP
import org.rut.util.algorithm.support.ImprovedQuickSort; xPQO}wKa
import org.rut.util.algorithm.support.InsertSort; 0Ny0#;P
import org.rut.util.algorithm.support.MergeSort; WB6g i2
import org.rut.util.algorithm.support.QuickSort; -*e$>w[.N
import org.rut.util.algorithm.support.SelectionSort; &^63*x;hE
import org.rut.util.algorithm.support.ShellSort; .Z8 x!!Q*
.oaW#f}0P
/**
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* @author treeroot +3si=x\=/
* @since 2006-2-2 [5)1
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x
* @version 1.0 z.e%AcX
*/ S'Yg!KwX
public class SortUtil { s:*gjoL
public final static int INSERT = 1; Z)P x6\?+
public final static int BUBBLE = 2; u\^<V)
public final static int SELECTION = 3; [53@'@26
public final static int SHELL = 4; Y'Wj7P
public final static int QUICK = 5; A{x&5yX8
public final static int IMPROVED_QUICK = 6; ]8+%57:E
public final static int MERGE = 7; EVgn^,
public final static int IMPROVED_MERGE = 8; 0Hff/~J
public final static int HEAP = 9; {'"A hiR/
KOhy)h+ h
public static void sort(int[] data) { 9.zy`}
sort(data, IMPROVED_QUICK); W$:;MY>0f
} %lv2 ;-
private static String[] name={ 6}C4 SZ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |A'8 'z&q
}; u$t*jw\fHg
Fdm7k){A
private static Sort[] impl=new Sort[]{ MukPY2[Am
new InsertSort(), "}7K>|a
new BubbleSort(), kVkV~
new SelectionSort(), <g>_#fz"K
new ShellSort(), r.-NfK4
new QuickSort(), =c-j4xna>
new ImprovedQuickSort(), .X_k[l 9
new MergeSort(), >bz}IcZP
new ImprovedMergeSort(), 4mNL;O
new HeapSort() n3isLNvIp
}; *N\U{)b\
n@T4z.*~lA
public static String toString(int algorithm){ Y&Pi`E9=
return name[algorithm-1]; ``w,CP ?
} =<`9T_S 16
^CZn<$
public static void sort(int[] data, int algorithm) { 0J@)?,V-.
impl[algorithm-1].sort(data); k W/3
Aq7r
} nHD4J;l
Ln[R}qD
public static interface Sort { SQ>.P
public void sort(int[] data); ;]Y.2 J
} KNIYar*3
vq( @B
public static void swap(int[] data, int i, int j) { J24UUZ9&$
int temp = data; l=
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data = data[j]; P~ffgzP
data[j] = temp; ^q
FFF3<8
} ecA0z
c~
} ^uIZs}=+