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。 KM
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插入排序: ea[vzD]
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package org.rut.util.algorithm.support; W|h~&O
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import org.rut.util.algorithm.SortUtil; dZ}gf}.v
/** nX%b@cOXj
* @author treeroot 3}R}|Ha
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* @since 2006-2-2 nMm4fns
* @version 1.0 4FrP%|%E~
*/ E| eEAa
public class InsertSort implements SortUtil.Sort{ G#yv$LY#
*g7BR`Bt]z
/* (non-Javadoc) !2L?8oP-z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -wn,7;
*/ >}<1
public void sort(int[] data) { 1OI/!!t1$
int temp; R
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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); TLu+5f
} H.ha}0J
} >D]g:t@v
} h pf,44Kg
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} 0b=1Ce+0q
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冒泡排序: ;::]R'F[
fh%|6k?#M
package org.rut.util.algorithm.support; m&S *S_c
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import org.rut.util.algorithm.SortUtil; ,X`w/ 2O
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/** Xz,fjKUnN
* @author treeroot KXrZ:4bg
* @since 2006-2-2 U80h0t%
* @version 1.0 {$>Pg/
*/ Ww=^P{q\
public class BubbleSort implements SortUtil.Sort{ ?Vre"6U
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/* (non-Javadoc) b-8}TTL>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [&(~{#}M:
*/ XoNBq9Iu
public void sort(int[] data) { 0RZ[]:(
int temp; }G/!9Zq
for(int i=0;i for(int j=data.length-1;j>i;j--){ *Jwx,wF}4
if(data[j] SortUtil.swap(data,j,j-1); ldFR%v>9
} zgNzdO/B
} =;Q:z^S
} h0.2^vM)R
} !i>d04u`%
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} a^o'KN{
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选择排序: Y_zMj`HE
Gf=3h4
package org.rut.util.algorithm.support; rnyXMt.q
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import org.rut.util.algorithm.SortUtil; 38mC+%iC
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/** xyD2<?dGUb
* @author treeroot $c{fPFe-
* @since 2006-2-2 ~ &<Ls
* @version 1.0 g@2KnzD
*/ E1j3c
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public class SelectionSort implements SortUtil.Sort { bWgRGJqt
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/* uG$*DeZti
* (non-Javadoc) 4mHk,Dd9,
* $\+x7"pI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) + 70x0z2
*/ \Up~"q>Kb
public void sort(int[] data) { b4qMTRnv
int temp; YP
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for (int i = 0; i < data.length; i++) { a]/KJn/B(
int lowIndex = i; 1}_4C0h\'
for (int j = data.length - 1; j > i; j--) { W)Ct*I^
if (data[j] < data[lowIndex]) { UgLFU#
lowIndex = j; q|{z9V<
} PI.Zd1r
} Z;<:=#
SortUtil.swap(data,i,lowIndex); KKq%'y)u^
} $cWt^B'
} ck< `kJ`b
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} !bCSt?}@u
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Shell排序: G?v!Uv8O
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package org.rut.util.algorithm.support; Aydpr_lp
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import org.rut.util.algorithm.SortUtil; %VGW]!QR
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/** '&+]85_&$
* @author treeroot x2sKj"2?@
* @since 2006-2-2 5T%2al,F`
* @version 1.0 !w}b}+]GB
*/ ;W T<]
public class ShellSort implements SortUtil.Sort{ f^-ot@w
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/* (non-Javadoc) riL|B3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KL6B!B{;
*/ 2!6E~<~HC
public void sort(int[] data) { 182g6/,
for(int i=data.length/2;i>2;i/=2){ O/U? Wq
for(int j=0;j insertSort(data,j,i); HSWki';G
} {+m8^-T
} ,CI-IR2
insertSort(data,0,1); a>6D3n
W
} Q6HghG
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/** =w* 8
* @param data =;4K5l{c
* @param j 1c{m
rsB
* @param i }N}Js*
*/ 2-DG6\QX|
private void insertSort(int[] data, int start, int inc) { U)xebU.!S
int temp; }hsNsQ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); DZ @B9<Zz{
} dk^jv +
} et/:vLl13
} <(@Z#%O9)
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} Dw/vXyZ
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快速排序: +HPcvu?1
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package org.rut.util.algorithm.support; Zf1
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import org.rut.util.algorithm.SortUtil; 3"zPG~fY{
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/** &XV9_{Hm
* @author treeroot =IW!ZN_
* @since 2006-2-2 ^r-d.1
* @version 1.0 Qu1&$oO
*/ v)T#
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public class QuickSort implements SortUtil.Sort{ B~E">}=!
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/* (non-Javadoc) B$6KI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E}KGZSj
*/ $#-rOi /
public void sort(int[] data) { {:3\Ms#
quickSort(data,0,data.length-1); HAL\j5i
} mI5J]hk
private void quickSort(int[] data,int i,int j){ ;:_AOb31N
int pivotIndex=(i+j)/2; J;NIa[a
file://swap 2Mk;r*FT
SortUtil.swap(data,pivotIndex,j); 2F>Y{3&
[|ZFei)r
int k=partition(data,i-1,j,data[j]); yuy\T(7BN
SortUtil.swap(data,k,j); \I:27:iAL
if((k-i)>1) quickSort(data,i,k-1); P
JATRJ1.
if((j-k)>1) quickSort(data,k+1,j); _7\`xU
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} cE:s\hG
/** Ufl\
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* @param data M 9-Q
* @param i :A
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* @param j aXQS0>G%(
* @return .CnZMw{'
*/ ;-8.~Sm
private int partition(int[] data, int l, int r,int pivot) { dVYY:1PS
do{ WKiP0~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); QmjE\TcK/
SortUtil.swap(data,l,r); ;&n iZKoe
} y%ij)vQY
while(l SortUtil.swap(data,l,r); jhf#
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return l; HA8A}d~
} faDS!E' +
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} 0uIY6e0E
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改进后的快速排序: jan}}7Dly
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package org.rut.util.algorithm.support; *ma
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import org.rut.util.algorithm.SortUtil; %SOXw8-
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/** >zqaV@T
* @author treeroot 4/|x^Ky>G
* @since 2006-2-2 BK%.wi
* @version 1.0 )M.s<Y
*/ x;)I%c
public class ImprovedQuickSort implements SortUtil.Sort { e,epKtL
VS/M@y_./
private static int MAX_STACK_SIZE=4096; W]#w4Fp!
private static int THRESHOLD=10; >STthPO
/* (non-Javadoc) 7bk77`qWr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uDie205
*/ /M%>M]
public void sort(int[] data) { tu<<pR>
int[] stack=new int[MAX_STACK_SIZE]; (ne[a2%>
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int top=-1; ".
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int pivot; |dLr #+'az
int pivotIndex,l,r; wYf\!]}'
. 2$J-<O
stack[++top]=0; 5PO_qr=Hx
stack[++top]=data.length-1; JyZuj>`
6
o *J*}y
while(top>0){ #Z1-+X8P
int j=stack[top--]; mA{?E9W
int i=stack[top--]; udqrHR5
TG}owG]]
pivotIndex=(i+j)/2; jcJ 4?
pivot=data[pivotIndex]; U@NCN2I
n!4\w>h
SortUtil.swap(data,pivotIndex,j); yf9"Rc~+
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file://partition ,_u7@Ix
l=i-1; ~jL%l
r=j; Q__CW5&'u
do{ {ogBoDS
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); p/-du^:2
SortUtil.swap(data,l,r); *rmC3'}s
} ):'wxIVGI
while(l SortUtil.swap(data,l,r); [(@K;6o
SortUtil.swap(data,l,j); U;#KFZ+~
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if((l-i)>THRESHOLD){ > O?WRCB
stack[++top]=i; `Y:]&w
stack[++top]=l-1; PP$sdmo
} (M$0'BV0
if((j-l)>THRESHOLD){ s{@R|5
stack[++top]=l+1; G<e+sDQ2
stack[++top]=j; q13fmK(n-5
} -*'
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4>=M"DhB
} YSeH;<'
file://new InsertSort().sort(data); 7A\`
insertSort(data); o6MFMA+vi
} d}4NL:=&
/** t|i NSy3
* @param data OF7hp5
*/ SvM\9
private void insertSort(int[] data) { vHf)gi}O|
int temp; 4CF;>b
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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); QEs$9a5TE
} W_2;j)i
} 'hjEd.
} oh8:1E,I
$XhMI;h
}
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归并排序: ]?4;Lw
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package org.rut.util.algorithm.support; Vx $;wU Y
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import org.rut.util.algorithm.SortUtil; =:&xdphZ+
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/** b]]8Vs)'
* @author treeroot J#..xJ?XRD
* @since 2006-2-2 ;\*3A22 #
* @version 1.0 J,?#O#j
*/ \EfX3ghPI
public class MergeSort implements SortUtil.Sort{ !"F;wg$
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/* (non-Javadoc) ~(V\.hq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G]>yk_#/\U
*/ zL
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public void sort(int[] data) { )$n%4 :
int[] temp=new int[data.length]; /A7( `l;6
mergeSort(data,temp,0,data.length-1); r!Aj5
} eB5>uKa
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private void mergeSort(int[] data,int[] temp,int l,int r){ +X/a+y-
int mid=(l+r)/2; 5*%Gh&)
if(l==r) return ; M-^I! C
mergeSort(data,temp,l,mid); bp?5GU&Uy
mergeSort(data,temp,mid+1,r); ln82pQD2Y~
for(int i=l;i<=r;i++){ EH|+S
temp=data; <c}@lj-j
} KyyRHf5
int i1=l; +yP!7]
int i2=mid+1; uxf,95<g)
for(int cur=l;cur<=r;cur++){ $.jGO!
if(i1==mid+1) X+;[Gc}(W
data[cur]=temp[i2++]; ?Zb+xN KJ(
else if(i2>r) 3NpB1lgh&:
data[cur]=temp[i1++]; q}P@}TE
else if(temp[i1] data[cur]=temp[i1++]; DO:,PZX
else J9mK9{#q
data[cur]=temp[i2++]; <T_3s\
} bTD?uX!^@
} cT'Bp)a
uE's&H
} 4EqThvI{
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改进后的归并排序: Cb ;6yE)!Z
AY/.vyS
package org.rut.util.algorithm.support; ;R*-cm
jaoZ}}V_$
import org.rut.util.algorithm.SortUtil; [Fr](&Tx
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/** KOy{?
* @author treeroot _@ao$)q{J
* @since 2006-2-2 *?X&Y8Kf
* @version 1.0 huC{SzXM
*/ *E/Bfp1LIe
public class ImprovedMergeSort implements SortUtil.Sort { ;b {#$#`=
cLZ D\1Mt
private static final int THRESHOLD = 10; K3!3[dR*
=d{6=2Pt
/* 4zMvHe
* (non-Javadoc) [bh?p+V
* ws0qwv#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i6if\B
*/ sq'm)g
public void sort(int[] data) { kOQ)QX
int[] temp=new int[data.length]; I0}.!
mergeSort(data,temp,0,data.length-1); ukR0E4p
} \L*%?~
dtR"5TL<~}
private void mergeSort(int[] data, int[] temp, int l, int r) { /z-rBfdy^
int i, j, k; S8#0Vo$)a
int mid = (l + r) / 2; 9\_s&p=:.
if (l == r) Clum
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return; P =X]'m_B
if ((mid - l) >= THRESHOLD) $Z G&d
mergeSort(data, temp, l, mid); xvTtA61Vp
else Z@Rm^g]o
insertSort(data, l, mid - l + 1); .RxT z9(
if ((r - mid) > THRESHOLD) W> pe-
mergeSort(data, temp, mid + 1, r); JqzoF}WH
else rRe5Q
insertSort(data, mid + 1, r - mid); f-F=!^.
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for (i = l; i <= mid; i++) { 1bV
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temp = data; D:@W*,
} :=NXwY3~M
for (j = 1; j <= r - mid; j++) { JQM_96\
temp[r - j + 1] = data[j + mid]; _BewaI;w
} wo`.sB&T
int a = temp[l]; 8:TX9`,
int b = temp[r]; 7:UeE~uB:
for (i = l, j = r, k = l; k <= r; k++) { d7V/#34
if (a < b) { s 4`-mIa
data[k] = temp[i++]; lO-DXbgql$
a = temp; xv]z>4@z,
} else { [7@blU
data[k] = temp[j--]; /]U$OP*0
b = temp[j]; ,l>w9?0Z
} E'WXi!>7p
} MJ:c";KCq0
} zVE" 6
mE<_oRM)
/** v<1@"9EH
* @param data 84(Jo_9
* @param l (@^9oN~}
* @param i 45JL{YRN
*/ *Dg@fxCQ
private void insertSort(int[] data, int start, int len) { Wg}KQ6
6
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >|SIqB<%:
} -m`|S q
} Km5_P##
} Gld~GyB\k
} @)b'3~D
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堆排序: ;<FAcR
%j&vV>2
package org.rut.util.algorithm.support; +-!3ruwSn
d*6f,z2=
import org.rut.util.algorithm.SortUtil; :BxO6@>Xc
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/** 2U./
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* @author treeroot =zn'0g,J4
* @since 2006-2-2 dy6zrgxygP
* @version 1.0 B!&5*f}*
*/ !td!">r46e
public class HeapSort implements SortUtil.Sort{ :I#.d7`uk
^(;x-d3
/* (non-Javadoc) oCCtjr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ROkwjw
*/ qJ;~ANwt
public void sort(int[] data) { XIIq0I
MaxHeap h=new MaxHeap(); ?A@y4<8R|
h.init(data); :j]6vp6
for(int i=0;i h.remove(); ,ojJ;w5D
System.arraycopy(h.queue,1,data,0,data.length); oRbWqN`F.
} g]f<k2
29:2Xu i
private static class MaxHeap{ sPK ]:iC
1sXCu|\q
void init(int[] data){ "==c
this.queue=new int[data.length+1]; "W5MZ
for(int i=0;i queue[++size]=data; I!/EQO|
fixUp(size); O<vBuD2
} .w4|$.H
} z_'^=9m
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private int size=0; s4Ja y!A
+Ug &
private int[] queue; x;[)#>.'
:3M,]W]
public int get() { |co#X8J
return queue[1]; %/2
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} `*U@d%a
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public void remove() { r8(oTx
SortUtil.swap(queue,1,size--); \gP?uJ
fixDown(1); ](oeMl18R
} <~|n}&
file://fixdown #s~ITG#H
private void fixDown(int k) { *$7^.eHfdd
int j; %ZRv+}z
while ((j = k << 1) <= size) { Z*Ffdh>*:&
if (j < size %26amp;%26amp; queue[j] j++; Hl$qmq
if (queue[k]>queue[j]) file://不用交换 Q^{TcL8
break; .EhC\QpP
SortUtil.swap(queue,j,k); f?Ex$gnI
k = j; 2@(+l*.Q
} ^fKKsfIf
} .yF-<Y
private void fixUp(int k) { n*GB`I*g
while (k > 1) { MO~T_6
int j = k >> 1; ywm"{ U?8
if (queue[j]>queue[k]) 7UBW3{d/u5
break; -F`gRAr-
SortUtil.swap(queue,j,k); .x$V~t
k = j; E`N`
} k8E2?kbF
} uhq6dhhR
9ZOQNN<ex
} _
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Wda?$3!^q
} @%g:'^/
_Nh])p-
SortUtil: oxFd@WV5
e$
package org.rut.util.algorithm; M]V
j
pYCMJK-H
import org.rut.util.algorithm.support.BubbleSort; {X,-T&
import org.rut.util.algorithm.support.HeapSort; ->|eMV'd
import org.rut.util.algorithm.support.ImprovedMergeSort; ^Ip\`2^u
import org.rut.util.algorithm.support.ImprovedQuickSort; uEPm[oyX
import org.rut.util.algorithm.support.InsertSort; Le~D"d8
import org.rut.util.algorithm.support.MergeSort; o< b
import org.rut.util.algorithm.support.QuickSort; djf8FNnn
import org.rut.util.algorithm.support.SelectionSort; fwtsr>SV
import org.rut.util.algorithm.support.ShellSort; `mkOjsj &
:V8oWMY
/** :TrP3wV_
* @author treeroot o
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* @since 2006-2-2 +2E~=xX
* @version 1.0 ~ DLxIe
*/ r(]Gd`]
public class SortUtil { U;&s=M0[
public final static int INSERT = 1; ;Qd'G7+
public final static int BUBBLE = 2; H"+|n2E^
public final static int SELECTION = 3;
H|s Iw:
public final static int SHELL = 4; F\+9u$=
public final static int QUICK = 5; j; /@A
lZl
public final static int IMPROVED_QUICK = 6; SFWS<H(IN
public final static int MERGE = 7; 5UL5C:3R9
public final static int IMPROVED_MERGE = 8; `iuQ.I
public final static int HEAP = 9; %_]O|(
7OZ0;fK
public static void sort(int[] data) { '(ETXQ@
sort(data, IMPROVED_QUICK); @bkSA
} k;umLyz
private static String[] name={ g3n>}\xG>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E#w2'(t
}; I2{zy|&
.O5|d+S
private static Sort[] impl=new Sort[]{ #;2mP6a[
new InsertSort(), cL%eP.
new BubbleSort(), ">|L<
new SelectionSort(), Qm3RXO
new ShellSort(), W*c^(W
new QuickSort(), 1%.CtTi
new ImprovedQuickSort(), ~O;?;@
new MergeSort(), %|}7YH41
new ImprovedMergeSort(), l5e`m^GK
new HeapSort() IxG0TJ_
}; Qe[ai?iJkt
k:s86q
public static String toString(int algorithm){ n-9X<t|*?a
return name[algorithm-1]; DKQQZ`PF
} c1%ki%J#
<D nv=)Rq
public static void sort(int[] data, int algorithm) { G* mLb1
impl[algorithm-1].sort(data); o,1Fzdh6(
} uN9.U _
arPqVMVr
public static interface Sort { :fG9p`
public void sort(int[] data); 2\}6b4
} .dBW{|gN
wW/wvC-
public static void swap(int[] data, int i, int j) { h7\EN
int temp = data; ELV$!f|u
data = data[j]; +]Bx4r?p
data[j] = temp; %gEfG#S
} +DT)7koA
} xI=[=;L