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。
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插入排序: _8A
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package org.rut.util.algorithm.support; yiO!ZT
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import org.rut.util.algorithm.SortUtil; r+n0M';0
/** kH~ z07:
* @author treeroot @W6:JO
* @since 2006-2-2 WfpQ
* @version 1.0 uNCM,J!#~
*/ /4/'&tY
public class InsertSort implements SortUtil.Sort{ .DsdQ4Y
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/* (non-Javadoc) ~k\Dde
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }A jE- K{
*/ vz5x{W
public void sort(int[] data) { vF@hg)A
int temp; Wip@MGtJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E! d?@Xr@
} q\s"B.(G"
} NIgqdEu1
} 2t 6m#
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} >RJjm&M
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冒泡排序: Lh%z2 5t
WoM;) Q
package org.rut.util.algorithm.support; -]el_:H
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import org.rut.util.algorithm.SortUtil; %"-bG'Yc
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/** j5m KJC
* @author treeroot !q\MXS($#u
* @since 2006-2-2 ]QKo>7%[
* @version 1.0 YBh|\
*/ )U12Rshl
public class BubbleSort implements SortUtil.Sort{ >[}lC7 z,
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/* (non-Javadoc) `#HtVI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +t*V7nW
*/ j9gn7LS
public void sort(int[] data) { 4`yE'%6.}
int temp; mi[t1cN)=
for(int i=0;i for(int j=data.length-1;j>i;j--){ OT0%p)
if(data[j] SortUtil.swap(data,j,j-1); )5T82=[h<
} wcH,!;3z+
} }uZ/^_U.
} @$}Ct
} 4>^LEp
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} 1lo.X_
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选择排序: u7&q(Z&&O
+YZ*>ki
package org.rut.util.algorithm.support; F m?j-'
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import org.rut.util.algorithm.SortUtil; <fHJ9(5$V
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/** 4)"S/u
* @author treeroot Zd5Jz+f
* @since 2006-2-2 'tTUro1~
* @version 1.0 ~c,CngeL0
*/ -pmb-#`M
public class SelectionSort implements SortUtil.Sort { Gj_7wP$
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/* vB74r]'F
* (non-Javadoc) !3F3E8%
* Su/8P[q_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (1EtC{
m
*/ 6VUs:iO1j5
public void sort(int[] data) { KH$|wv
int temp; IG+g7kDCY
for (int i = 0; i < data.length; i++) { JBhM*-t(M1
int lowIndex = i; mT:NC'b<9
for (int j = data.length - 1; j > i; j--) { vtq$@#?~ b
if (data[j] < data[lowIndex]) { xU/7}='T
lowIndex = j; kEgpF{"%n
} clG@]<a`_
} 7|5X> yt
SortUtil.swap(data,i,lowIndex); rjffpU
} [Dhqyjq
} CvHE7H|-{
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} )J*M{Gm 6i
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Shell排序: C@`rg ILc
6k_Uq.<X
package org.rut.util.algorithm.support; i0:1+^3^U
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import org.rut.util.algorithm.SortUtil; /4*Y#IpZ
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/** !4-4i
* @author treeroot @)\4 $#+-
* @since 2006-2-2
|nCVM\+5T
* @version 1.0 u,V_j|(e
*/ _tUh*"e&
public class ShellSort implements SortUtil.Sort{ \q($8<
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/* (non-Javadoc) (xfh 9=.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i;rcgd
*/ H;R~d%!b
public void sort(int[] data) { 6hMKAk
for(int i=data.length/2;i>2;i/=2){ #f [}a
for(int j=0;j insertSort(data,j,i); #c!rx%8I
} Lqdapx"Z_
} v,C~5J3h)
insertSort(data,0,1); ^@3,/dH1 t
} :YQI1 q[6
br^
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/** ZIKSHC9
* @param data ,Nt^$2DZW
* @param j t~7OtPF
* @param i ]1FLG*sB
*/ TjDtNE
private void insertSort(int[] data, int start, int inc) { 'W,*mfB
int temp; IyI0|&r2A
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);
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} PB
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} e|?eY)_
} 2eHVl.C5
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} Uks%Mo9on
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快速排序: /IN#1I!K
I_5/e>9
package org.rut.util.algorithm.support; U
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import org.rut.util.algorithm.SortUtil; 76bMy4re
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/** l$1NI#&
* @author treeroot ZNne 8
* @since 2006-2-2 /vq$/
* @version 1.0 )Gavjj&uJ
*/ DuNindo8
public class QuickSort implements SortUtil.Sort{
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/* (non-Javadoc) d<+hQ\BF,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w
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*/ /o%VjP"<
public void sort(int[] data) { obE8iG@H
quickSort(data,0,data.length-1); Th$Z9+()
} @R}3f6@67
private void quickSort(int[] data,int i,int j){ 9/!1J
int pivotIndex=(i+j)/2; <#J5.I 1
file://swap OLPY<ax
SortUtil.swap(data,pivotIndex,j); &8w#
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PW|=IPS
int k=partition(data,i-1,j,data[j]); BPa,P_6(
SortUtil.swap(data,k,j); Fsm6gE`|n
if((k-i)>1) quickSort(data,i,k-1); pU9.#O
if((j-k)>1) quickSort(data,k+1,j); ]Zt ]wnL+
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} I 1n,c d[
/** (BFwE@1"
* @param data ^D5Jqh)
* @param i V*ao@;sD
* @param j 76"4Q!
* @return DI8<0.L
*/ `3i<jZMG
private int partition(int[] data, int l, int r,int pivot) { e@qH!.g)
do{ -$?t+ "/E
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4w~%MZA^
SortUtil.swap(data,l,r); p J_+n:_{
} E_En"r)y
while(l SortUtil.swap(data,l,r); S
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return l; Pw| h`[h
} nj0sh"~+
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} $,2T~1tE
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改进后的快速排序: 4xEw2F
lyX3'0c
package org.rut.util.algorithm.support; Vi: ^bv
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import org.rut.util.algorithm.SortUtil; .=9WY_@SZ
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/** mM72>1~L*
* @author treeroot EwX&Cj".
* @since 2006-2-2 |dqHpogh
* @version 1.0 vue^bn
*/ *
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public class ImprovedQuickSort implements SortUtil.Sort { \7i_2|w
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private static int MAX_STACK_SIZE=4096; =$Mf:F@
private static int THRESHOLD=10; uf90
/* (non-Javadoc) QOo'Iv+EL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )PTvw>
*/ >xabn*Kq
public void sort(int[] data) { #kASy 2t
int[] stack=new int[MAX_STACK_SIZE]; Oo@o$\+v
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int top=-1; chKK9SC+|
int pivot; / n_s"[I4
int pivotIndex,l,r; -z~!%4 a
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stack[++top]=0; cd1G.10
stack[++top]=data.length-1; R8k4?_W?T
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while(top>0){ _0v+'&bz
int j=stack[top--]; sde>LZet/
int i=stack[top--]; }VZExqm)
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pivotIndex=(i+j)/2; <M@-|K"Eb
pivot=data[pivotIndex]; KF00=HE|]
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SortUtil.swap(data,pivotIndex,j); -1,0hmn=+
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file://partition I7oA7@zv
l=i-1; ?}Z t&(#
r=j; #M16qOEw
do{ X8Q'*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '1:) q
SortUtil.swap(data,l,r); WN+i 3hC
} 8Rwk
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while(l SortUtil.swap(data,l,r); u*G<?
SortUtil.swap(data,l,j); M&j|5UH%.
<mE`<-$
if((l-i)>THRESHOLD){ ~_vSMX
stack[++top]=i; Ztg_='n
stack[++top]=l-1; 9Q%lS
} s:}? rSI
if((j-l)>THRESHOLD){ x{SlJ%V
stack[++top]=l+1; T:$^1"\
stack[++top]=j; WJOoDS!i
} W~'xJ
)"pvF8JR%3
} Q!;syJBb.
file://new InsertSort().sort(data); RyJy%|\-S
insertSort(data); xKG7d8=
} 3$nK
/** ^obuMQ;
* @param data 9p qsr~
*/ V_gl#e#
private void insertSort(int[] data) { b<00 %Z
int temp; `y3'v]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :J`@@H
} Wr%ov6:
} E7fQ9]
} I_<XL<
x 3=1/#9
} MqnUym
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归并排序: /RxP:>hVv
G kjfDY:
package org.rut.util.algorithm.support; 172 G
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import org.rut.util.algorithm.SortUtil; _-TplGSO=c
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/** I "AjYv4R
* @author treeroot D=-}&w_T"
* @since 2006-2-2 v.Ba
* @version 1.0 Q?k*3A
*/ ;7lON-@BI
public class MergeSort implements SortUtil.Sort{ 6P1s*u
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/* (non-Javadoc) 1.cP3kl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )x|;%.8FX7
*/ "l56?@- x
public void sort(int[] data) { `N *:,8j
int[] temp=new int[data.length]; -I|xW
mergeSort(data,temp,0,data.length-1); 0N,<v7PX
} t]LiFpy2IC
a:)FWdp?9
private void mergeSort(int[] data,int[] temp,int l,int r){ I9S;t_Z<
int mid=(l+r)/2; OOqT 0wN
if(l==r) return ; J:m/s9r
mergeSort(data,temp,l,mid); JXK\mah
mergeSort(data,temp,mid+1,r); X&pYLm72;
for(int i=l;i<=r;i++){ #{8IFA
temp=data; i)o;,~ee
} *y*tI}
int i1=l; " CT}34l
int i2=mid+1; !4vb{AH
for(int cur=l;cur<=r;cur++){ Tn}`VW~
if(i1==mid+1) zeHF-_{
data[cur]=temp[i2++]; U>E:
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else if(i2>r) fwFJe(.
data[cur]=temp[i1++]; xol%\$|
else if(temp[i1] data[cur]=temp[i1++]; *): |WDR
else Cs6`lX >
data[cur]=temp[i2++]; fg^25g'_
} ZRagM'K
}
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} UCLM*`M
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改进后的归并排序: ,Xn2xOP
n%&L&G
package org.rut.util.algorithm.support; Zhq_ pus"a
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import org.rut.util.algorithm.SortUtil; P8d
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/** G(&[1V % x
* @author treeroot ,9P-<P
* @since 2006-2-2 TpKAdrY
* @version 1.0 uY&1[(Pb
*/ /f3/}x!po
public class ImprovedMergeSort implements SortUtil.Sort { =_dM@ j
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private static final int THRESHOLD = 10; <~smBd
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/* C? zS}ob
* (non-Javadoc) kTb$lLG\xk
* !#KKJ`uB"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ku]5sd >b
*/ \=ML*Gi*
public void sort(int[] data) { ipv5JD[
int[] temp=new int[data.length]; <Ua~+U(FR0
mergeSort(data,temp,0,data.length-1); 3B1\-ry1M
} w]wZJ/U`
]01`r/->\
private void mergeSort(int[] data, int[] temp, int l, int r) { 0'Pjnk-i
int i, j, k; VE )D4RL
int mid = (l + r) / 2; Fz7t84g(
if (l == r) Q|(}rIWOQA
return; s6 yvq#:
if ((mid - l) >= THRESHOLD) T2e-RR
mergeSort(data, temp, l, mid); C%o|}i v"
else mU/o%|h
insertSort(data, l, mid - l + 1); *g(d}C!
if ((r - mid) > THRESHOLD) hFIh<m=C?Y
mergeSort(data, temp, mid + 1, r); cbJgeif
else `|'w]rj:"+
insertSort(data, mid + 1, r - mid); `nPdZ.
H/D=$)3op
for (i = l; i <= mid; i++) { F!vrvlD`s
temp = data; j6qtR$l|
} 7V"?o
for (j = 1; j <= r - mid; j++) { W'./p"2g
temp[r - j + 1] = data[j + mid]; @>8(f#S%
} 7Nq<
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int a = temp[l]; V[tebv!
int b = temp[r]; YdhTjvx
for (i = l, j = r, k = l; k <= r; k++) { ?H=YJK$k
if (a < b) { sVFO&|L
data[k] = temp[i++]; P#O"{+`
a = temp; cE\w6uBR1
} else { K.
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data[k] = temp[j--]; t#NPbLZ
b = temp[j]; FZ-Wgh
0z
} (!}N&!t
} G+
/Q!ic
} ,>j3zjf^
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/** h"`\'(,X
* @param data YkKu4f
* @param l
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* @param i 2/?Zp=|j\
*/ C[^VM$
private void insertSort(int[] data, int start, int len) { lJK]S=cd
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tia}&9;
} ,P~e)<.
} J}V4.R5d
} aq?bI:>8
} 9)!Ksg(h
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堆排序: xQFRM aQE
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package org.rut.util.algorithm.support; iJTG+gx
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import org.rut.util.algorithm.SortUtil; .eJKIck
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/** Igo`\JY
* @author treeroot %xgP*%Sv2
* @since 2006-2-2 .O-)m'5
* @version 1.0 5Q10Ohh
*/ o]?
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public class HeapSort implements SortUtil.Sort{ v^C\
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3!P^?[p3
/* (non-Javadoc) Q6
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) | R,dsBd
*/ PF4[;ES'
public void sort(int[] data) { fG 2)r
MaxHeap h=new MaxHeap(); >{^_]phlb
h.init(data); !.R-|<2|6
for(int i=0;i h.remove(); neEqw+#Z
System.arraycopy(h.queue,1,data,0,data.length); BValU
} X_PzK'#m
DwBe_h .
private static class MaxHeap{ OS[
s Qo5
2f(`HSC'
void init(int[] data){ `q}D#0
this.queue=new int[data.length+1]; LW=qX%o{
for(int i=0;i queue[++size]=data; =9&2udV1
fixUp(size); JQ+Mg&&Q
} 48p3m)5
} KDN#CU
V
FM[-
private int size=0; ?c.\\2>|F
HVM%B{(
private int[] queue; I(6%'s2
U#f*
public int get() { Zl5DlRuw
return queue[1]; 0hS&4nW
} IR/S`HD_
K E\>T:
public void remove() { ?"b __(3
SortUtil.swap(queue,1,size--); jnV#Q
;
fixDown(1); Gr({30"8
} q~qz^E\T
file://fixdown kV8R.Baf3
private void fixDown(int k) { `
k]
TOc
int j; >D=X
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while ((j = k << 1) <= size) { b8a(.}8*
if (j < size %26amp;%26amp; queue[j] j++; frbd{o
if (queue[k]>queue[j]) file://不用交换 uNf'Zeo
break; c:${qY:!
SortUtil.swap(queue,j,k); rT="ciQ
k = j; ,IiKe_B
} B~o3Z
} ^ iu)vED
private void fixUp(int k) { 8z93ETv7`
while (k > 1) { -dMH>e0
int j = k >> 1; 2`i&6iz
if (queue[j]>queue[k]) [CHN3&l-5S
break; #mH28UT
SortUtil.swap(queue,j,k); ?3DL .U{
k = j; /8Lb_QH{
} !UzE&CirV
} ,vR>hyM
}ll&EB
} ccv
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} o=VZ7]
;$eY#ypx
SortUtil: bP:u`!p
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q4:zr
package org.rut.util.algorithm; "4XjABJ4'
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import org.rut.util.algorithm.support.BubbleSort; s\'t=}0q
import org.rut.util.algorithm.support.HeapSort; -/8V2dv3
import org.rut.util.algorithm.support.ImprovedMergeSort; ;4+z~7Je]^
import org.rut.util.algorithm.support.ImprovedQuickSort; \1R*M
import org.rut.util.algorithm.support.InsertSort; Xk:x=4u&
import org.rut.util.algorithm.support.MergeSort; hj=n;,a9
import org.rut.util.algorithm.support.QuickSort; covCa )kf
import org.rut.util.algorithm.support.SelectionSort; z%fjG} z
import org.rut.util.algorithm.support.ShellSort; #~Kno@
j\#)'>"
/** C4E* q3[Y
* @author treeroot D[T\_3W
* @since 2006-2-2 L{sFR^-G
* @version 1.0 HmXxM:[4;
*/ pDC`Fi
public class SortUtil { L `2{H%J`
public final static int INSERT = 1; dsEvpa$?
public final static int BUBBLE = 2; k8Dk;N
public final static int SELECTION = 3; QKk7"2t|
public final static int SHELL = 4; ,9OER!$y
public final static int QUICK = 5; N#J8 4i;ry
public final static int IMPROVED_QUICK = 6; :4:U\k;QwA
public final static int MERGE = 7; 6hcs)X7m
public final static int IMPROVED_MERGE = 8; #E4oq9{0*W
public final static int HEAP = 9; ^g'uR@uU
N]BH6 7<
public static void sort(int[] data) { w&U28"i>
sort(data, IMPROVED_QUICK); :hHKm|1FE
} ]_>38f7h
private static String[] name={ >U:-U"rA?
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;{m;CKHI
}; MO]zf3f!
e{:
-N
private static Sort[] impl=new Sort[]{ be6`Sv"H
new InsertSort(), vSQB~Vw8t
new BubbleSort(), $jC+oYXj
new SelectionSort(), JWt@vf~
new ShellSort(), #,jm3Mqj
new QuickSort(), 3&X5*-U
new ImprovedQuickSort(), 'fb&3
new MergeSort(), ,[n=PJVw/
new ImprovedMergeSort(), q:_-#u
new HeapSort() s_u!
RrC
}; 0s4]eEXH
gYL#} ) g
public static String toString(int algorithm){ DUf. F
return name[algorithm-1]; %z1hXh#+
} y_IF{%i
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public static void sort(int[] data, int algorithm) { CIR2sr0a
impl[algorithm-1].sort(data); h#h)=;
} ud(w0eX
B)DtJf
public static interface Sort { wh]v{Fi'
public void sort(int[] data); <.|]%7
} -P]onD
5IG#-Q(6sp
public static void swap(int[] data, int i, int j) { .v) A|{:2
int temp = data; `?N|{kb
data = data[j]; P\X$fD
data[j] = temp; %F*h}i
} >+BLD
} Kn+B):OY+