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。 RF }R~m9]
插入排序: SuA
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package org.rut.util.algorithm.support; m1D,#=C,_
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import org.rut.util.algorithm.SortUtil; e}NB ,o
/** # AH gY.
* @author treeroot (qw;-A
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* @since 2006-2-2 g;~$xXn
* @version 1.0 GdM|?u&s"
*/ KK?R|1VK9
public class InsertSort implements SortUtil.Sort{ BsR3$
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/* (non-Javadoc) XMF#l]P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s54AM]a{j
*/ 4N)45@jk[
public void sort(int[] data) { zmg
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int temp;
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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); x<5;#
} 79uAsI2-Y
} p'kB1)~|
} _ xM}*_<VP
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} )`#SMLMy~
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冒泡排序: jA3xDbM
w&Z.rB?
package org.rut.util.algorithm.support; B$G9#G6pZ
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import org.rut.util.algorithm.SortUtil; * Na8w'Q
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/** &23{(]eO
* @author treeroot 6 u,w
* @since 2006-2-2 ]V,#>'
* @version 1.0 m' eM&1Ba
*/ $ VeQvm*
public class BubbleSort implements SortUtil.Sort{ ^V"08
t;
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/* (non-Javadoc) BO>[\!=y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \98|.EG
*/ g{Hb3id9
public void sort(int[] data) { VO<P9g$UD
int temp; loD:4e1
for(int i=0;i for(int j=data.length-1;j>i;j--){ in>?kbaG+
if(data[j] SortUtil.swap(data,j,j-1); 0BN=>]V~j7
} ,o\~d?4
} .G>6_n3
} qdZo
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} "4CO^ B
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} s-S|#5
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选择排序: Cp]q>lM"
F D.L{
package org.rut.util.algorithm.support; w_#5Na}>d
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import org.rut.util.algorithm.SortUtil; %`j2?rn
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/** b(_PV#@$
* @author treeroot Ns-3\~QSi
* @since 2006-2-2 R-5e9vyS
* @version 1.0 A"B[F#
*/ Tl*FK?)MC^
public class SelectionSort implements SortUtil.Sort { ETaLE[T%1
}#E~XlX^
/* .*L_*}tno
* (non-Javadoc) /pz(s+4=
* r%II`
i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sX]ru^F3
*/ &uxwz@RC0
public void sort(int[] data) { **Q
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int temp; R1\$}ep^
for (int i = 0; i < data.length; i++) { 0^3@>>^
int lowIndex = i; K[i|OZWu
for (int j = data.length - 1; j > i; j--) { R^GLATM
if (data[j] < data[lowIndex]) { ^BQ*l5K
lowIndex = j; 2_;3B4GDF
} d=:&tOCg2
} EXT_x q
SortUtil.swap(data,i,lowIndex); } @jT-t]P
} e[J0+
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} H3jb{S
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} AME6Zu3Y
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Shell排序: S-)%#
x2H?B`5
package org.rut.util.algorithm.support; /(skIvE|
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import org.rut.util.algorithm.SortUtil; UZqk2D
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/** #[ hJm'G
* @author treeroot ~<w9a]
* @since 2006-2-2 e025m}%SU
* @version 1.0 N}j^55M_]
*/ 6GtXM3qtS
public class ShellSort implements SortUtil.Sort{ zq&,KZ
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/* (non-Javadoc) 5\$8"/H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tL~?)2uEN
*/ : $>TeCm
public void sort(int[] data) { U m9]X@z
for(int i=data.length/2;i>2;i/=2){ 0`dMT>&I
for(int j=0;j insertSort(data,j,i); T'nQj<dBt:
} v(2|n}qY
} E>3fk
insertSort(data,0,1); &r
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} 53cW`F
*PJg~F%
/** 7J@D})si
* @param data < l%3P6|
* @param j yPqZ ,
* @param i P7i
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*/ ^?)o,djY&
private void insertSort(int[] data, int start, int inc) { __,1;=
int temp; <H)I06];
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )m Uc
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} #c ndq[H
} $G5;y>
} N{<=s]I%x
JS<4%@
} w3=Bj
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快速排序: t<6`?\Gk
0=r.I}x
package org.rut.util.algorithm.support; ;hOrLy&O
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import org.rut.util.algorithm.SortUtil; &1DU]|RoT&
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/** nKJJ7 RL
* @author treeroot /f9jLY+
* @since 2006-2-2 +Zx+DW cq
* @version 1.0 I
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*/ /?jAG3"
public class QuickSort implements SortUtil.Sort{ ?[\(i)]
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/* (non-Javadoc) `V@{#+X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (N U*PQY6
*/ PEPBnBA&1
public void sort(int[] data) { szC~?]<YY
quickSort(data,0,data.length-1); s fxQ
} Elt=/,v`!
private void quickSort(int[] data,int i,int j){ ~h]
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int pivotIndex=(i+j)/2; Y" s1z<?
file://swap mJu;B3@
SortUtil.swap(data,pivotIndex,j); W^W^5-'"D,
`/'Hq9$F<"
int k=partition(data,i-1,j,data[j]); zA&lJD$0
SortUtil.swap(data,k,j); wwS{V
if((k-i)>1) quickSort(data,i,k-1); lK%pxqx
if((j-k)>1) quickSort(data,k+1,j); ;$G.?r
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} j(!M
/** kmM1)- v
* @param data m9UI3fBX
* @param i zxtx~XO
* @param j =uZ[
* @return <LDVO'I0!
*/ yAoJ?<4^W
private int partition(int[] data, int l, int r,int pivot) { @8TD^ub
do{ pq6}q($Rk
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8oG0tX3i
SortUtil.swap(data,l,r); 1O1/P,u+
} ,
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while(l SortUtil.swap(data,l,r); ?5nF` [rx
return l; ;CD.8f]N
} KAm v7
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} V+X>t7.Q
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改进后的快速排序: >C~-*M9
C`3}7qi|C
package org.rut.util.algorithm.support; {Q[{H'Oa
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import org.rut.util.algorithm.SortUtil; a3
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/** 5C/W_H+9iK
* @author treeroot <8p53*a
* @since 2006-2-2 'D8WNZ8Q
* @version 1.0 Y25S:XHk9
*/ IpmblC4
public class ImprovedQuickSort implements SortUtil.Sort { Qj?+R F6(
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private static int MAX_STACK_SIZE=4096; |jV>
private static int THRESHOLD=10; A^_BK(EY
/* (non-Javadoc) s)#FqB8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^SB?NRk
*/ Fd-PjW/E8
public void sort(int[] data) { _rXTHo7P
int[] stack=new int[MAX_STACK_SIZE]; '<~l%q
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int top=-1; [k.|iCD
int pivot; &,2h=H,M
int pivotIndex,l,r; ps"DL4*
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stack[++top]=0; D(D:/L8T,
stack[++top]=data.length-1; 3>%rm%ffE
hex:e2x
while(top>0){ .v%H%z~Rl#
int j=stack[top--]; 0'`>20Y
int i=stack[top--]; Cfu]umZLn
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pivotIndex=(i+j)/2; `:!mPNW#
pivot=data[pivotIndex]; O^48c$Apv
:}0y[qc3
SortUtil.swap(data,pivotIndex,j); F6R+E;"4R'
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file://partition Tw"u{%t
l=i-1; $-m@cObw!.
r=j; Y;d$x}dh
do{ cdfJa
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z9pv|
SortUtil.swap(data,l,r); :zZK%}G<
} cq+|fg~Yy
while(l SortUtil.swap(data,l,r); m!5P5U
x
SortUtil.swap(data,l,j); k'{'6JR
s~$ZTzV
if((l-i)>THRESHOLD){ L5!aLv#
stack[++top]=i; Y&KI/]ly,L
stack[++top]=l-1; ya3A^&:
} xGTVC=q
if((j-l)>THRESHOLD){ B)g7MG
stack[++top]=l+1; JsI`#
stack[++top]=j; ?47q0C
} |oPCmsO3R{
wl H6
} ;75K:_
file://new InsertSort().sort(data); [ZU6z?Pf
insertSort(data); ec+&K?T
} %!I7tR#;
/** YKKZRlQo
* @param data 0(A`Ia
*/ .6aC2A]es
private void insertSort(int[] data) { FIhq>L.q4
int temp; =B@+[b0Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V/"UDof
} 8)HUo?/3
} P*Va<'{:{
} lYldq)qB{
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} \=PnC}7I
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归并排序: }A,9`
9$ZQuHSw7
package org.rut.util.algorithm.support; =]jc{Y%o
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import org.rut.util.algorithm.SortUtil; NQ~keN
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/** /W\@/b,
* @author treeroot .anXsjD%W
* @since 2006-2-2 x6Zhw9RV
* @version 1.0 tb36c<U-
*/ ChzKwYDY
public class MergeSort implements SortUtil.Sort{ KBJ%$OQV
Em8q1P$tm>
/* (non-Javadoc) K",YAfJa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >dO1)
*/ e>z
public void sort(int[] data) { WjLy7&
int[] temp=new int[data.length]; M ,!Dhuas
mergeSort(data,temp,0,data.length-1); &[71~.Od
} d [K71
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private void mergeSort(int[] data,int[] temp,int l,int r){ ZNWo:N8;
int mid=(l+r)/2; %S*<2F9
if(l==r) return ; I)7STzlMj.
mergeSort(data,temp,l,mid); ybk~ m
mergeSort(data,temp,mid+1,r); CVUA7eG+
for(int i=l;i<=r;i++){ A#NJ8_
temp=data; Xa o*h(Q@L
} Z*uv~0a>9Q
int i1=l; 0Va+l)F
int i2=mid+1; AzFd#P
for(int cur=l;cur<=r;cur++){ ].ZfTrM]
if(i1==mid+1) 7\(mn$
data[cur]=temp[i2++]; Hwb+@'o
else if(i2>r) U-^qVlw
data[cur]=temp[i1++]; FTu6%~M/
else if(temp[i1] data[cur]=temp[i1++]; rgq~lZ.U4K
else .M(')$\U
data[cur]=temp[i2++]; Oly"ll*K
} v9*ugu[K9
} A]<+Aq@{
v@,n]"
} RBOb/.$
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改进后的归并排序: Kd='l~rby
h D5NX
package org.rut.util.algorithm.support; Fw{:fFZC[
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import org.rut.util.algorithm.SortUtil; "rl(%~Op
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/** 1`sLbPW
* @author treeroot @n|Mr/PAj
* @since 2006-2-2 ZYS`M?Au
* @version 1.0 I8x,8}o>V
*/ 7];AB;0"
public class ImprovedMergeSort implements SortUtil.Sort { WHF[l1
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private static final int THRESHOLD = 10; cMU"SO
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/* V><,.p8
* (non-Javadoc) EjA3hHJ
* Wg5<@=x!G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jT'09r3P
*/ q"@>rU4
public void sort(int[] data) { Tv[|^G9x
int[] temp=new int[data.length]; qkbGM-H%U
mergeSort(data,temp,0,data.length-1); 8NZQTRdH
} #"qP4S2
s'4O]k`
private void mergeSort(int[] data, int[] temp, int l, int r) { OH
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int i, j, k; fzdWM:g
int mid = (l + r) / 2; P.y06^
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if (l == r) H*H~~yQ
return; \: BixBU7
if ((mid - l) >= THRESHOLD) ]qd$rX
mergeSort(data, temp, l, mid); @fQvAok
else XN^l*Q?3n
insertSort(data, l, mid - l + 1); c4f3Dr'xw
if ((r - mid) > THRESHOLD) ^7Rc\
mergeSort(data, temp, mid + 1, r); JT p+&NS
else 41v#|%\w
insertSort(data, mid + 1, r - mid); a.z)m}+
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for (i = l; i <= mid; i++) { \1He9~6
temp = data; :Ahw{z`H#
} ;?G..,
for (j = 1; j <= r - mid; j++) { 6}cN7wnm
j
temp[r - j + 1] = data[j + mid]; ew.jsa`TrW
} ],~H3u=s3
int a = temp[l]; 8w$q4fg0
int b = temp[r]; Fhrj$
for (i = l, j = r, k = l; k <= r; k++) { q4T98s2J
if (a < b) { M<nH
data[k] = temp[i++]; t-i\gq^
a = temp; bOolBKV
} else { Ya&\ b 6
data[k] = temp[j--]; ]7{
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b = temp[j]; eakQZ-Q
} y 2C Jk~
} D0}r4eA
} vD^Uod1
MwC}
/** $jOp:R&I^3
* @param data iN9G`qF3!Q
* @param l Z,oCkv("n
* @param i hkB|rhJgm
*/ {G+iobQdd
private void insertSort(int[] data, int start, int len) { *zwo="WA\t
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jN AS'JV
} 8shx7"
} 9o4h~Imu
} %OsxXO?
} 6Jq3l_
3~{0X-
堆排序: qi
">AQpp
E3]
8(P%D-
package org.rut.util.algorithm.support; M!D6i5k,
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import org.rut.util.algorithm.SortUtil; {
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/** 7%W1M@
* @author treeroot w IP4Z^
* @since 2006-2-2 ddN G:
* @version 1.0 [k0/ZfFwV
*/ ?bpVdm!
public class HeapSort implements SortUtil.Sort{ Uu52uR
K9 ]zUew
/* (non-Javadoc) jSSEfy>^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'c_K[p$
*/ 1{wbC)
public void sort(int[] data) { @qYT/V*/
MaxHeap h=new MaxHeap();
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h.init(data); C#4_`4{
for(int i=0;i h.remove(); g~$UU(HX
System.arraycopy(h.queue,1,data,0,data.length); 0qIg:+l+
} dWY{x47
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private static class MaxHeap{ J .VZD
awI{%u_(nA
void init(int[] data){ N!MDD?0
this.queue=new int[data.length+1]; ktS^^!,l%
for(int i=0;i queue[++size]=data; ^}{x).
fixUp(size); oam;hmw
} >x3lA0m
} *G7cF
1D38T
private int size=0; N|Ag8/2A
qE|syA9
private int[] queue; ^8A[
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public int get() { h5pfmN\-5
return queue[1]; ,Si{]y
} f0j]!g
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public void remove() { fm`V 2'Rm
SortUtil.swap(queue,1,size--); kY!zBk
fixDown(1); 4 ob W>
} =<#G~8WYz
file://fixdown RGs7Hc
private void fixDown(int k) { f$6N
int j; D7T|K :F)
while ((j = k << 1) <= size) { AS@(]T#R
if (j < size %26amp;%26amp; queue[j] j++; c{_JPy
if (queue[k]>queue[j]) file://不用交换 gua7<z6=eh
break; Lt=32SvTn
SortUtil.swap(queue,j,k); i>]PW|]
k = j; # =tw
,S
} zL9~gJ
} eBs.RR
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private void fixUp(int k) { ]wdE
:k,D
while (k > 1) { CoNaGb
int j = k >> 1; '?mF,Co{
if (queue[j]>queue[k]) ]K*R[
break; 'j<u0'K@
SortUtil.swap(queue,j,k); ~59lkr8
k = j; Um6}h@>
} y.J>}[\&x
} "C\yM{JZ
,LN^Zx*
} -l57!s~V
\20}/&
} lTP#6zqfv
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SortUtil: `G/g/>y
kj[boxN
package org.rut.util.algorithm; Z|$DchC
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import org.rut.util.algorithm.support.BubbleSort; T|wz%P<J
import org.rut.util.algorithm.support.HeapSort; ThgJ
'
import org.rut.util.algorithm.support.ImprovedMergeSort; rMi\#[oB
import org.rut.util.algorithm.support.ImprovedQuickSort; 2Kz$y
JTp
import org.rut.util.algorithm.support.InsertSort; DE?k|Get2
import org.rut.util.algorithm.support.MergeSort; GT6i9*tb#
import org.rut.util.algorithm.support.QuickSort; (C#0
ML
import org.rut.util.algorithm.support.SelectionSort; 05T?c{ ;
import org.rut.util.algorithm.support.ShellSort; JJ
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/** k[ z yR
* @author treeroot n}IGxum8`
* @since 2006-2-2 qb=2J5su
* @version 1.0 }7 +%k/
*/ b7dsi|Yo
public class SortUtil { 8]^|&"i.\d
public final static int INSERT = 1; T?m@`"L,
public final static int BUBBLE = 2; ,^8':X"A{!
public final static int SELECTION = 3; T=tW'tlT\v
public final static int SHELL = 4; hE5?G;
public final static int QUICK = 5; 5(J?C-Pk
public final static int IMPROVED_QUICK = 6; 452kE@=49
public final static int MERGE = 7; r^}0qO,XM
public final static int IMPROVED_MERGE = 8; %p )"_q!ge
public final static int HEAP = 9; bRy(`
pXO09L/nv
public static void sort(int[] data) { U|tacO5w`
sort(data, IMPROVED_QUICK); [;Lgbgt3f
} |~
fI=1;;x
private static String[] name={ ZH;4e<gg
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ygIn6.p
};
mu{C>w_Rz
mz6]=]1w
private static Sort[] impl=new Sort[]{ 7WS$fUBi
new InsertSort(), 5tpC$4m
new BubbleSort(), iSezrN
new SelectionSort(), E-.X%xfO
new ShellSort(), :G@z?ZJ[
new QuickSort(), = EFh*sp
new ImprovedQuickSort(), (FApkvy
new MergeSort(), c.Hw
K\IU
new ImprovedMergeSort(), 0H>gMXWE]
new HeapSort() lr~
|=}^
}; l 1k&@1"
wB0vpt5f
public static String toString(int algorithm){ T^|k`
return name[algorithm-1]; eZ(ThA*2=t
} ub~ t}
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public static void sort(int[] data, int algorithm) { PB$beQ
impl[algorithm-1].sort(data); G)I`
M4}*n
} Z3{1`"\<K
9h\RXVk{tA
public static interface Sort { "ymR8y'
public void sort(int[] data); 4;Ucas6
} Eej
Lso#\
tW|0_m>{
public static void swap(int[] data, int i, int j) { B;(U?gC
int temp = data; M{G}-QK_.
data = data[j]; CdRJ@Lf
data[j] = temp; mbkt7. ,P
} ~M^[
} {f-O~P<Z4