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。 ZbJUOa?WF
插入排序: iVM{ L
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package org.rut.util.algorithm.support; i)V-q9\
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import org.rut.util.algorithm.SortUtil; U!sv6=(y@
/** 1]r+$L3
* @author treeroot irNGURLm
* @since 2006-2-2 s}Q%]W
* @version 1.0 dKcHj<'E/
*/ .^^YS$%%7
public class InsertSort implements SortUtil.Sort{ |[x) %5F
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/* (non-Javadoc) }Y(yDg;"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Q^@!hu
*/ ?^9TtxM
public void sort(int[] data) { ``o:N`
int temp; {5U;9: sO6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dq?q(_9
} S5ofe]tS@
} KOWx P47b
} O$B]#]L+
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} MjMPbGUX{
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冒泡排序: mqGp]'{
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package org.rut.util.algorithm.support; |2!/<%Yr`
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import org.rut.util.algorithm.SortUtil; ,,r%Y&:`6
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/** )2mi6[qs0l
* @author treeroot v7VJVLH,I7
* @since 2006-2-2 #;'1aT
* @version 1.0 /ve8);cH\
*/ H"8+[.xBh
public class BubbleSort implements SortUtil.Sort{ kStWsc$;+T
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/* (non-Javadoc) >\b=bT@iM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2s,wC!',
*/ >S5:zz\
public void sort(int[] data) { ,L&Ka|N0
int temp; 8Pklw^k
for(int i=0;i for(int j=data.length-1;j>i;j--){ RRy3N
)HR
if(data[j] SortUtil.swap(data,j,j-1); Fs7/3
} 5EDM?G
} xKz^J
SF
} ^ MkT">
} 6.|f iQs]
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} $~4ZuV%
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选择排序: 8}m]XO
GE=#8-@g~p
package org.rut.util.algorithm.support; ^I9x@t
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import org.rut.util.algorithm.SortUtil; :NHh`@0F
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/** MId\dFu
* @author treeroot u2'xM0nQ
* @since 2006-2-2 >4=sEj
* @version 1.0 zEJ|;oL
*/ r'fNQJ >
public class SelectionSort implements SortUtil.Sort { N4"%!.Y
!8ub3oj)
/* =!r9;L,?
* (non-Javadoc) $@q)IK%FDL
* +\9Y;Ny
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5B| iBS l
*/ Gs2.}lz
public void sort(int[] data) { Mq]~Ka3q7
int temp; nK Rx_D$d
for (int i = 0; i < data.length; i++) { =x}27f%-Mg
int lowIndex = i; oQ@X}6B%S
for (int j = data.length - 1; j > i; j--) { q%#dx4z&
if (data[j] < data[lowIndex]) { 3/o-\wWO
lowIndex = j; sj003jeko
} rixNz@p'%
} ~q#UH'=%
SortUtil.swap(data,i,lowIndex); zLuej'
} Zr'VA,v
} ihKnZcI$i
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} RH^8 "%\
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Shell排序: +](^gaDw<L
~h?zK1
package org.rut.util.algorithm.support; oT$w14b
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import org.rut.util.algorithm.SortUtil; g+p?J.+
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/** dNG>:p
* @author treeroot axnkuP(
* @since 2006-2-2 71nXROB
* @version 1.0 $+zev$f
*/ Q$G!-y+"i
public class ShellSort implements SortUtil.Sort{ |eWlB\ x8
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/* (non-Javadoc) ]~CGzV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @v_ ) (
*/ draY/
public void sort(int[] data) { mYXe0E#6
for(int i=data.length/2;i>2;i/=2){ Ll lyx20U
for(int j=0;j insertSort(data,j,i); FVsVY1
} RvvK`}/6
} Q&^ti)vB
insertSort(data,0,1); ]H) x
} K[PIw}V$?:
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/** Rer\='
* @param data "CBe$b4
* @param j Z.<OtsQN
* @param i t.c XrX`k
*/ zS 18Kl
private void insertSort(int[] data, int start, int inc) { j*<H18^G
int temp; Uaj8}7v
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *^ncb,1+i
} &(-+?*A`E
} !6\{q
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} #-1 ;
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} qYZX,
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快速排序: 0J z'9
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package org.rut.util.algorithm.support; I/rq@27o
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import org.rut.util.algorithm.SortUtil; Xa#`VDh
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/** ^k]OQc7q'
* @author treeroot wqJ^tA!
* @since 2006-2-2 3|-)]^1O
* @version 1.0 gI6./;;x
*/ rq Dre`m
public class QuickSort implements SortUtil.Sort{ DG}t!
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/* (non-Javadoc) 3iJ4VL7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +'Pf|S
*/ R8Nr3M9 )
public void sort(int[] data) { i&$L$zf,
quickSort(data,0,data.length-1); Zm!T4pL
} ;'NB6[x
private void quickSort(int[] data,int i,int j){ ~[e;{45V
int pivotIndex=(i+j)/2; 6%~ Z^>`N
file://swap q3TAWNzI0
SortUtil.swap(data,pivotIndex,j); 3qE2mYK
M%5qx,JQY
int k=partition(data,i-1,j,data[j]); nAG2!2_8
SortUtil.swap(data,k,j); R2yiExw<
if((k-i)>1) quickSort(data,i,k-1); (e6JI]tz{
if((j-k)>1) quickSort(data,k+1,j); Eb{Zm<TP
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} ob05:D_bc9
/** qasbK:}
* @param data !#`
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* @param i py VTA1
* @param j I9rWut@+
* @return D/^yAfI
*/ |jH-
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private int partition(int[] data, int l, int r,int pivot) { kL\
FY
do{ @
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); [KMW*pA7
SortUtil.swap(data,l,r); *,q ?mO
} ?8X;F"Ba
while(l SortUtil.swap(data,l,r); NK;%c-r0v7
return l; W0J d2 *]
} XdjM/hB{fD
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} SB0Cq
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改进后的快速排序: K?o( zh;
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package org.rut.util.algorithm.support; |N/Grk4
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import org.rut.util.algorithm.SortUtil; SDt)|s
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/** )0UVT[7
* @author treeroot _[u&}i
* @since 2006-2-2 Vw:.'-Oi
* @version 1.0 jcD_<WSe
*/ ~x^E kE
public class ImprovedQuickSort implements SortUtil.Sort { 2kb<;Eh`G
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private static int MAX_STACK_SIZE=4096; o|O730"2F
private static int THRESHOLD=10; _b|mSo,{Y
/* (non-Javadoc) j>Wb$p6S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cu*8,*FU
*/ 6RV42r^pf
public void sort(int[] data) { lHQ:LI
int[] stack=new int[MAX_STACK_SIZE]; 6U~AKq"+f
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int top=-1; no_;^Ou?
int pivot; &0cfTb)dG
int pivotIndex,l,r; .P(k |D&
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stack[++top]=0; BBuI|lr
stack[++top]=data.length-1; 2-=Ov@y2k!
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while(top>0){ 7niZ`doBA
int j=stack[top--]; >L[n4x\
int i=stack[top--]; kT)[<`p
V&)Jvx}^
pivotIndex=(i+j)/2; p_%dH
pivot=data[pivotIndex]; -E{D'X
Pt< JF
SortUtil.swap(data,pivotIndex,j); PJ}d-
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file://partition w3l2u1u
l=i-1; OBY^J1St
r=j; )+ifVv50
do{ kq|(t{@Rp
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :Ywb
SortUtil.swap(data,l,r); 9#(Nd, m})
} *{WhUHZF
while(l SortUtil.swap(data,l,r); SFqY*:svOw
SortUtil.swap(data,l,j); 8R|!$P
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if((l-i)>THRESHOLD){ W
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stack[++top]=i; j=|cx+nb
stack[++top]=l-1; MXQua:&HW
} wNc.z*+O"H
if((j-l)>THRESHOLD){ xs#g
stack[++top]=l+1; >,%or cN
stack[++top]=j; #<h//<
} k7,
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} :Kq]b@X
file://new InsertSort().sort(data); 9r2l~zE
insertSort(data); .cks){\
} Iu"7
/** #BtJo:
* @param data ri.}G
*/ phCItN;
private void insertSort(int[] data) { aF8'^xF
int temp; xhcFZTj/(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H@,h$$
} ^mwS6WH6
} pW&K=,7|
} qAI%6d
T'6MAxEZUq
} B^;"<2b*
+ /+> :
归并排序: P;8nC:z L
e|-&h `[
package org.rut.util.algorithm.support; 3uXRS,C
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import org.rut.util.algorithm.SortUtil; h~EGRg
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/** !d.bCE~
* @author treeroot x-nO; L-2p
* @since 2006-2-2 ^cDHC^Wm
* @version 1.0 j_3`J8WwF
*/ Rf4}((y7Y\
public class MergeSort implements SortUtil.Sort{ XoNBq9Iu
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/* (non-Javadoc) ~a$h\F'6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L;GkG! g
*/ 8sus$:Ry
public void sort(int[] data) { _DouVv>
int[] temp=new int[data.length]; Q{[l1:
mergeSort(data,temp,0,data.length-1); 6 2:FlW>
} !jWE^@P/B
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private void mergeSort(int[] data,int[] temp,int l,int r){ Xb<>AzEM
int mid=(l+r)/2; 7Is:hx|:
if(l==r) return ; ]\Z8MxFD
mergeSort(data,temp,l,mid); Lv&9s
mergeSort(data,temp,mid+1,r); ;mT
for(int i=l;i<=r;i++){ +)xjw9b
temp=data; 'MgYSP<
} xlcL;e&^P
int i1=l; (b;Kl1Ql]
int i2=mid+1; C4aAPkcp2$
for(int cur=l;cur<=r;cur++){ "wy2u~
if(i1==mid+1) ~pT1,1
data[cur]=temp[i2++]; QHXA?nBX
else if(i2>r) d{J@A;da
data[cur]=temp[i1++]; m'zve%G
else if(temp[i1] data[cur]=temp[i1++]; [XE\2Qa8e
else "&:H }Jd
data[cur]=temp[i2++]; =&i#NSK
} l*.u rG
} KCIya[$*
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} \RqH"HqD
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改进后的归并排序: h! Bg}B~
eDsB.^|l
package org.rut.util.algorithm.support; B[3u,<opFU
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import org.rut.util.algorithm.SortUtil; ?W>`skQ
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/** IeZ9 "o h
* @author treeroot A$M8w9
* @since 2006-2-2 OdbXna
* @version 1.0 ff;~k?L
*/ P;`Awp?
public class ImprovedMergeSort implements SortUtil.Sort {
jF-:e;-
&,P; 7 R
private static final int THRESHOLD = 10; a&2UDl% K
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/* ]Cs=EZr
* (non-Javadoc) WG&! VK
* 9W0*|!tQ,+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dS8ydG2
*/ g< xE}[gF
public void sort(int[] data) { BRy3D\}
int[] temp=new int[data.length]; k;B[wEW@
mergeSort(data,temp,0,data.length-1); ]$uC~b
} + ZKU2N*
eBH:_Ls_-^
private void mergeSort(int[] data, int[] temp, int l, int r) { 2!6E~<~HC
int i, j, k; d>?C?F
int mid = (l + r) / 2; 9Fy'L#%
if (l == r) le'
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return; {+m8^-T
if ((mid - l) >= THRESHOLD) ,CI-IR2
mergeSort(data, temp, l, mid); a>6D3n
W
else Q6HghG
insertSort(data, l, mid - l + 1); A%2B3@1'q
if ((r - mid) > THRESHOLD) =w* 8
mergeSort(data, temp, mid + 1, r); =;4K5l{c
else 1c{m
rsB
insertSort(data, mid + 1, r - mid); }N}Js*
2-DG6\QX|
for (i = l; i <= mid; i++) { U)xebU.!S
temp = data; }hsNsQ
} DZ @B9<Zz{
for (j = 1; j <= r - mid; j++) { dk^jv +
temp[r - j + 1] = data[j + mid]; ]
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} <(@Z#%O9)
int a = temp[l]; suzK)rJ9i
int b = temp[r]; Wsgp#W+
for (i = l, j = r, k = l; k <= r; k++) { Zf1
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if (a < b) { *;)O'|
data[k] = temp[i++]; 3"zPG~fY{
a = temp; a{L&RRJ
} else { &XV9_{Hm
data[k] = temp[j--]; I-}ms
b = temp[j]; U3C"o|
} QJj='+R>
} G pI4QzR
} cxQAp
B~^*@5#0|
/** }S8aR:'
* @param data B$6KI
* @param l E}KGZSj
* @param i $#-rOi /
*/ {:3\Ms#
private void insertSort(int[] data, int start, int len) { HAL\j5i
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &TY74w*
} *RxJ8.G
} 1a/C(4_k
} 2Mk;r*FT
} 2F>Y{3&
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堆排序: 8^^ 1h
!(7m/R
package org.rut.util.algorithm.support; kc0MQ TJU
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import org.rut.util.algorithm.SortUtil; `u}_O(A1pA
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/** :o'|%JE
* @author treeroot wgIm{;T[u
* @since 2006-2-2 #Lpw8b6
* @version 1.0 [Q{\Ik
*/ ?)J/uU2w
public class HeapSort implements SortUtil.Sort{ .Sn{a}XP4
u4IK7[=
/* (non-Javadoc) $K!Jm7O\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QmjE\TcK/
*/ ;&n iZKoe
public void sort(int[] data) { y%ij)vQY
MaxHeap h=new MaxHeap(); jhf#
gdz%
h.init(data); L /:^;j`c
for(int i=0;i h.remove(); \#(1IC`as
System.arraycopy(h.queue,1,data,0,data.length); SGSyO0O
} 0uIY6e0E
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private static class MaxHeap{ (_|*&au J
haBmwq(f
void init(int[] data){ r&m49N,d
this.queue=new int[data.length+1]; _Iminet
for(int i=0;i queue[++size]=data;
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fixUp(size); Nd]F 33|X
} g3c<c S^l
} _\KFMe=PV
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private int size=0; 5"@>>"3U
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private int[] queue; =TDKU
}< H> 9iJ:
public int get() { jQ;/=9
return queue[1]; bw zx_F/
} &muBSQ-
ed`"xm
public void remove() { L&DjNu`!9
SortUtil.swap(queue,1,size--); w.w{L=p:<"
fixDown(1); x)*Lu">
} pdRM%ug
file://fixdown ?/OF=C#
private void fixDown(int k) { ~*7$aj
int j; E+i*u
while ((j = k << 1) <= size) { o3dqsQE%
if (j < size %26amp;%26amp; queue[j] j++; )][U6 e
if (queue[k]>queue[j]) file://不用交换 Ny2
Z
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break; _i {Y0d+
SortUtil.swap(queue,j,k); zawu(3?~)5
k = j; Rpg g
:
} z^U+oG
} +Q u.86dH
private void fixUp(int k) { M i& ;1!bg
while (k > 1) { LAlwQ^v|
int j = k >> 1; >Xk42zvqn
if (queue[j]>queue[k]) v']_)
break; 6&os`!
SortUtil.swap(queue,j,k); {lWV H
k = j; m;~} }~&vQ
} GMJ4v S
} 0TmEa59P
$KYGQP
} WVRIq'
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} V?j,$LixY
)vS0Au^C~
SortUtil: RFL*
qd4
)]j3-#
package org.rut.util.algorithm; (DO'iCxlNh
UsyNn39
import org.rut.util.algorithm.support.BubbleSort; G<e+sDQ2
import org.rut.util.algorithm.support.HeapSort; q13fmK(n-5
import org.rut.util.algorithm.support.ImprovedMergeSort; -*'
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import org.rut.util.algorithm.support.ImprovedQuickSort; %`C*8fc&
import org.rut.util.algorithm.support.InsertSort; BQ0?B*yqd
import org.rut.util.algorithm.support.MergeSort; >8_y-74
import org.rut.util.algorithm.support.QuickSort; 7A\`
import org.rut.util.algorithm.support.SelectionSort; o6MFMA+vi
import org.rut.util.algorithm.support.ShellSort; 3W7^,ir
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/** OP1`!P y
* @author treeroot KAClV%jP
* @since 2006-2-2 qR'FbI
* @version 1.0 !b+4[xky
*/ p75 o1RU
public class SortUtil { LZn'+{\`
public final static int INSERT = 1; aDdGhB
public final static int BUBBLE = 2; \Ip)Lm0
public final static int SELECTION = 3; W_2;j)i
public final static int SHELL = 4; Ab ,^y
public final static int QUICK = 5; nZbI}kcm
public final static int IMPROVED_QUICK = 6;
Y${'
public final static int MERGE = 7; :EV.nD7
public final static int IMPROVED_MERGE = 8; $XhMI;h
public final static int HEAP = 9; 8X,6U_>#a
P`lv_oV
public static void sort(int[] data) { $(9QnH1KY
sort(data, IMPROVED_QUICK); .2fvRN92
} hN2A%ds*(j
private static String[] name={ A4tk</A
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" pX_#Y)5
}; @wcF#?J
^xa, r#N:V
private static Sort[] impl=new Sort[]{ @q'kKVJs
new InsertSort(), syR"p,3EC
new BubbleSort(), uI-T]N:W8x
new SelectionSort(), P+j=]Yg
new ShellSort(), 9~Dg<wQ
new QuickSort(), z?\it(
new ImprovedQuickSort(), KQPu9f9
new MergeSort(), lAU99(GXV
new ImprovedMergeSort(), .rtA sbp.!
new HeapSort() L~6%Fi&n4
}; BTkx}KK
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public static String toString(int algorithm){ i=EOk}R
return name[algorithm-1]; _Q5mPBO
} 1(o\GI3:
LDjtkD.r
public static void sort(int[] data, int algorithm) { ",b:rgpRp
impl[algorithm-1].sort(data); Dx-P]j)4x
} x]c8?H9,&
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public static interface Sort { X`D2w:
public void sort(int[] data); h-P|O6@Ki
} V\Cl""`XN
KyyRHf5
public static void swap(int[] data, int i, int j) { :oIBJ u%/
int temp = data; X+;[Gc}(W
data = data[j]; /]`@.mZ9:
data[j] = temp; U+!RIF[Je
} "0CFvN'4
} <K [y~9u