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。 yvooM'R
插入排序: l P$r
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package org.rut.util.algorithm.support; iQ|,&K0d]
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import org.rut.util.algorithm.SortUtil; yI.}3y{^5
/** nJ*mEB
* @author treeroot ?7kV+{.
* @since 2006-2-2 @9uYmkcV
* @version 1.0 g7 Md
*/ -<51CD w,
public class InsertSort implements SortUtil.Sort{ UhSh(E8p>
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/* (non-Javadoc) MzR1<W{ O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wHOlj)CZ
*/ o\]:!#r{T
public void sort(int[] data) { HLSfoQ&)v
int temp; FS`vK`'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Dpdn%8+Z
} <cDKGd
} C](z#c~c
} i'Y'HI
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} k~1j/VHv
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冒泡排序: j(%gMVu
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package org.rut.util.algorithm.support; lP@)
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import org.rut.util.algorithm.SortUtil; 5"kx}f2$
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/** %9QMzz5
* @author treeroot 9P7xoXJ@y
* @since 2006-2-2 "B9[cDM&
* @version 1.0 &N"'7bK6n
*/ jB%"AvIX
public class BubbleSort implements SortUtil.Sort{ $AA~]'O>6:
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/* (non-Javadoc) `y^zM/Ib
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _oJ2]f6KX
*/ Dh&:-
public void sort(int[] data) { , G[r+4|h
int temp; }{&ln
for(int i=0;i for(int j=data.length-1;j>i;j--){ Bn~\HW\Lh
if(data[j] SortUtil.swap(data,j,j-1); A,m4WO_q3
} DHm[8 Qp
} ~JwpNJs
} ShWHHU(QQ
} G{NSAaD[
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} Vl{~@G, @
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选择排序: +X:J]-1)
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package org.rut.util.algorithm.support; U#;51_
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import org.rut.util.algorithm.SortUtil; QFW0KD`5
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/** Yzj%{fkh
* @author treeroot ,8c
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* @since 2006-2-2 =5y`(0 I`U
* @version 1.0 B*?ZE4`
*/ Hva2j<h
public class SelectionSort implements SortUtil.Sort { &l.x:eD
5-8]N>/b!
/* ^uyN v-'F
* (non-Javadoc) E tJ~dL)
* VLcyPM@"Q!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0LWdJ($?
*/ @J-plJ4e
public void sort(int[] data) { ug^om{e-
int temp; ;W7 hc!
for (int i = 0; i < data.length; i++) { mi7sBA9L8
int lowIndex = i; l^k+E-w\
for (int j = data.length - 1; j > i; j--) { Mjb 1
if (data[j] < data[lowIndex]) { p`>AnfG
lowIndex = j; 3<c*v/L{C\
} [AXsnpa/C
} |EF>Y9
SortUtil.swap(data,i,lowIndex); b/}'Vf[
} a(8>n
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} )K{o<m~WAo
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} \s=QiPK
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Shell排序: %6AYCN?Ih
UhsO\ 9}qH
package org.rut.util.algorithm.support; 0jBKCu
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import org.rut.util.algorithm.SortUtil; W`#gpi)7N
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/** U?8i'5)
* @author treeroot $ "Afy)Ir
* @since 2006-2-2 fO*)LPen.z
* @version 1.0 VR"u*
*/ hIR@^\?
public class ShellSort implements SortUtil.Sort{ c
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/* (non-Javadoc) o
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RNGO~:k?r
*/ z4CJn[m9
public void sort(int[] data) { BS N6|W
for(int i=data.length/2;i>2;i/=2){ T3=(`
for(int j=0;j insertSort(data,j,i); 49o\^<4b
} _zdNLwE[
} S#,+Z7
insertSort(data,0,1); F
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} xXO RIlD
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/** ]de\i=?|
* @param data Ujf,6=M
* @param j WPIZi[hBs
* @param i &9RH}zv6
*/ Q\H_t)-
private void insertSort(int[] data, int start, int inc) { v' C@jsxM
int temp; JlUb0{8PE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vyE{WkZxR
} Q*gnAi&.#
} D>P;Izb
} }@wVW))6$
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} ?fV?|ZGZI
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快速排序: iecWa:('
/^Y[*5
package org.rut.util.algorithm.support; GjEqU;XBi
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import org.rut.util.algorithm.SortUtil; 6;gLwOeOHY
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/** 6Z Xu,ks}
* @author treeroot $|k%@Q>
* @since 2006-2-2 l_6e I
* @version 1.0 z?)He)d
*/ ^CUSlnB\(
public class QuickSort implements SortUtil.Sort{ )#a7'Ba
7SaiS_{:
/* (non-Javadoc) WVOoHH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Q7MM6
*/ sdrWOq
public void sort(int[] data) { )AI?x@
quickSort(data,0,data.length-1); "TfI+QgLF
} !~)90Z!
private void quickSort(int[] data,int i,int j){ u\f3qc,]F
int pivotIndex=(i+j)/2; B_hPcmB
file://swap d.p'pGL
SortUtil.swap(data,pivotIndex,j);
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=5?.'XMk
int k=partition(data,i-1,j,data[j]); `%Q&</X
SortUtil.swap(data,k,j); 6AAswz'$P
if((k-i)>1) quickSort(data,i,k-1); >VP5vkv=
if((j-k)>1) quickSort(data,k+1,j); b:1 L@8s;
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} UU[H@ym#
/** `^x9(i/NE
* @param data Ps3~{zH`
* @param i `Ug tvo
* @param j $Zxt&a
* @return t!jYu<P
*/ ?_%u)S*g
private int partition(int[] data, int l, int r,int pivot) { ya.n'X14
do{ QjJfE<h
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z5$fE7ba+
SortUtil.swap(data,l,r); {rDq_^
} LL.x11o3
while(l SortUtil.swap(data,l,r); pw\P<9e=
return l; f0DK>L
} }RIU8=P
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} <!F3s`7~
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改进后的快速排序: !p',Za
7\X$7
package org.rut.util.algorithm.support; &?y7I Pp
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import org.rut.util.algorithm.SortUtil; WI&lj<*
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/** &iBNO,v
* @author treeroot CW p#^1F
* @since 2006-2-2 1'Rmg\(
* @version 1.0 W:vr@e6
*/ FY4 T(4#
public class ImprovedQuickSort implements SortUtil.Sort { y^R4I_* z
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private static int MAX_STACK_SIZE=4096; wt?o
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private static int THRESHOLD=10; UFw](%=&M
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~x#vZ=]8
*/ N}x9N.
public void sort(int[] data) { E7`qmn
int[] stack=new int[MAX_STACK_SIZE]; 64umul
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int top=-1; C6]OAUXy:F
int pivot; "%@v++4y
int pivotIndex,l,r;
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stack[++top]=0; ix&'0IrX*
stack[++top]=data.length-1; Qnt5HSSt
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while(top>0){ pRrHuLj^
int j=stack[top--]; uR:rO^
int i=stack[top--]; ! %Ny0JkO
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pivotIndex=(i+j)/2; jn=:G+0
pivot=data[pivotIndex]; Ilq=wPD}j
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SortUtil.swap(data,pivotIndex,j); :c=.D;,
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file://partition -[heV| $;
l=i-1; {v,)G)obWw
r=j; -c+]Wm"\
do{ *yez:qnx
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9]7u_
SortUtil.swap(data,l,r); jatr/
} 5k$vlC#[H
while(l SortUtil.swap(data,l,r); HdNnUDb$B
SortUtil.swap(data,l,j); !0"nx{7.
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if((l-i)>THRESHOLD){ d1G8*YO@
stack[++top]=i; /{*$JF
stack[++top]=l-1; Qihdn66
} :NE/Ddgc'
if((j-l)>THRESHOLD){ f<=Fe:1.
stack[++top]=l+1; x?sI;kUw8
stack[++top]=j; ,H[SI0];
} J=H)JH3
efOjTA%
} k\aK?(.RC7
file://new InsertSort().sort(data);
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insertSort(data); Ia4)uV8
} `hUHel;6
/** @D[`Oj)
* @param data r\qz5G *6
*/ /.Q4~Hw%}
private void insertSort(int[] data) { m4m<nnM
int temp; DQ80B)<O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `^6 ,kI-c
} ~ap2m
} 75NRCXh.
}
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} <]d
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归并排序: D/ Dt
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package org.rut.util.algorithm.support; m;,xmEp
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import org.rut.util.algorithm.SortUtil; ^3~e/P KM
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/** ]l;*$2w)
* @author treeroot 1[PMDS_X
* @since 2006-2-2 6v732;^
* @version 1.0 )^x K
*/ {C3Y7<
public class MergeSort implements SortUtil.Sort{ 3yO=S0`
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/* (non-Javadoc) qoX@@xr1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]A+o>#n}x
*/ Es4qPB`g.
public void sort(int[] data) { m%r/O&g
int[] temp=new int[data.length]; #wR;|pN
mergeSort(data,temp,0,data.length-1); eJ@~o{,?>
} GbZ;#^S
zT9JBMNE:
private void mergeSort(int[] data,int[] temp,int l,int r){ j*R,m1e8
int mid=(l+r)/2; K8[DZ)rO;Z
if(l==r) return ; 1hmc,c
mergeSort(data,temp,l,mid); )!W45"l-3M
mergeSort(data,temp,mid+1,r); z`3( ,V
for(int i=l;i<=r;i++){ l67Jl"v
temp=data; `/IKdO*!S
} q|(W-h+
int i1=l; kOrl\_!z3
int i2=mid+1; !0}\&<8/m
for(int cur=l;cur<=r;cur++){ WO*9+\[v
if(i1==mid+1) B80aw>M
data[cur]=temp[i2++]; e%O0hE
else if(i2>r) ftbpqp'
data[cur]=temp[i1++]; 01@t~v3!Z
else if(temp[i1] data[cur]=temp[i1++]; 7hw .B'7
else 04@cLDX8uB
data[cur]=temp[i2++]; RHY4P4B<v>
} 5.0e~zlM-
} zGlZ!t:
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} S4o$t-9l
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改进后的归并排序: uGP(R=H
_aS;!6b8W
package org.rut.util.algorithm.support; zJN7<sv
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import org.rut.util.algorithm.SortUtil; xL
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/** , H
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* @author treeroot AC- )BM';
* @since 2006-2-2 ]0j9>s2|Z
* @version 1.0 _^ |2}t
*/ [k%4eO2p "
public class ImprovedMergeSort implements SortUtil.Sort { ,<Kx{+ [h
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private static final int THRESHOLD = 10; jLVl4h&
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/* l.=p8-/$'7
* (non-Javadoc) ,. EBOUW^
* gFN9jM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uaPx"
*/ lCT{v@pp
public void sort(int[] data) { /Lf6WMit
int[] temp=new int[data.length]; V"KS[>>f
mergeSort(data,temp,0,data.length-1); :#t*K6dz
} *%FA:Y
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private void mergeSort(int[] data, int[] temp, int l, int r) { 0\QR!*'$
int i, j, k; nHXX\i
int mid = (l + r) / 2; \IM4Z|NN"
if (l == r) mI1H!
return; p*3; hGp6
if ((mid - l) >= THRESHOLD) Sv[ 5NZn0&
mergeSort(data, temp, l, mid); PL=^}{r
else @C8DZ5)
insertSort(data, l, mid - l + 1); HL K@xKD<
if ((r - mid) > THRESHOLD) BOVPKX
mergeSort(data, temp, mid + 1, r); 9J-b6,
else Sus;(3EX
insertSort(data, mid + 1, r - mid); qL
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z? ]G3$i(
for (i = l; i <= mid; i++) { -0uV z)
temp = data; Am4lEvb
} JK_OZ
for (j = 1; j <= r - mid; j++) { xyh.N)
temp[r - j + 1] = data[j + mid]; $7Jo8^RE
} L@Nu/(pB=
int a = temp[l]; LRb,VD:/Y
int b = temp[r]; 4_?7&G0(
for (i = l, j = r, k = l; k <= r; k++) { 'fd1Pj9~$
if (a < b) { {p<Zbm.
data[k] = temp[i++]; ()T[$.(
a = temp; G=9d&N
} else { a:STQk V
data[k] = temp[j--]; |AZW9
b = temp[j]; io2)1cE&f
} R!\EKH
} .p`
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} :Ixx<9c.
9"{W,'r&d
/** j7QX,_Q
* @param data ?uL eFD
* @param l {tP%epQ
* @param i /B3R1kNf|
*/ WN]<q`.
private void insertSort(int[] data, int start, int len) { Rqipkx
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tfO#vw,@
} q>!L6h5]t
} i^`9syD
} V>-b`e
} ~l[ra
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堆排序: QP@<)`1t9
iPG0o
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package org.rut.util.algorithm.support; *~XA'Vw!
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import org.rut.util.algorithm.SortUtil; /7c~nBU
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/** )eeN1G`rDE
* @author treeroot 3
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* @since 2006-2-2 p/6zEZ*
* @version 1.0 p
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*/ c7uG9
public class HeapSort implements SortUtil.Sort{ QbFHfA2Ij
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B
/* (non-Javadoc) w*7|dZk{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;U=q-tb
*/ $m$;v<PSe
public void sort(int[] data) { vsB*rP=
MaxHeap h=new MaxHeap(); ;i uQ?MR3
h.init(data); PG%0yv%
for(int i=0;i h.remove(); R{YzH56M
System.arraycopy(h.queue,1,data,0,data.length); `(y(w-:W1
} p&p.Q^"ok
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private static class MaxHeap{ {^)70Vz>PE
Pn.bVV:
void init(int[] data){ TA18 gq
this.queue=new int[data.length+1]; 2.uA|~qH
for(int i=0;i queue[++size]=data; 1k8x%5p
fixUp(size); Pz_Oe,{.I
} /lhz],w
} }Rvm &?~O
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private int size=0; , :n|
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private int[] queue; @r^!{
q}|U4MJm
public int get() { M+>`sj
return queue[1]; Oft arD
} b]Kk2S/
6(&Y(/
public void remove() { .\Fss(Zn
SortUtil.swap(queue,1,size--); U%B(5cC
fixDown(1); 's?Ai2=#
} Nt`b;X&
file://fixdown ;#+0L$<t
private void fixDown(int k) { G#`\(NW
int j; _cH@I?B
while ((j = k << 1) <= size) { b}9[s
if (j < size %26amp;%26amp; queue[j] j++; FwAKP>6 *
if (queue[k]>queue[j]) file://不用交换 \BV
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break; D0G-5}s`
SortUtil.swap(queue,j,k); eitu!=u
k = j; }ucIH@U{
} 9-1#( Y6S
} VaZn{z
private void fixUp(int k) { n`Z"rwKmNw
while (k > 1) { f'(l&/4z{
int j = k >> 1; A?!I/|E^;
if (queue[j]>queue[k]) 7Ey#u4Q
break; 4Cb9%Q0
SortUtil.swap(queue,j,k); )emOKS
k = j; P,pnga3Wu
} l3o#@sz:
} sd re#@n}
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} 8iQ[9
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} 1^J`1
EpPf_ \o
SortUtil: ^4Am
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package org.rut.util.algorithm; >RI>J.~
GyI-)BlDC
import org.rut.util.algorithm.support.BubbleSort; ~ A Qp|
import org.rut.util.algorithm.support.HeapSort; 3:/'n
import org.rut.util.algorithm.support.ImprovedMergeSort; 9%)=`W
import org.rut.util.algorithm.support.ImprovedQuickSort; O09ke-lC
import org.rut.util.algorithm.support.InsertSort; ,1{Ep`
import org.rut.util.algorithm.support.MergeSort; h&@R| N
import org.rut.util.algorithm.support.QuickSort; a l9.}
import org.rut.util.algorithm.support.SelectionSort; \(UKdv
import org.rut.util.algorithm.support.ShellSort; L#[]I,
Vn=qV3OE]
/** XEM'}+d
* @author treeroot <-Bx&Q
* @since 2006-2-2 `D5HC
* @version 1.0 g+8hp@a
*/ 9a$56GnW1
public class SortUtil { (WlIwKP
public final static int INSERT = 1; .S\&L-{
public final static int BUBBLE = 2; ?/*~;fM
public final static int SELECTION = 3; -C7]qbT
}
public final static int SHELL = 4; th5g\h%j*
public final static int QUICK = 5; m#H3:-h,
public final static int IMPROVED_QUICK = 6; cp
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public final static int MERGE = 7; qAkx<u
public final static int IMPROVED_MERGE = 8; h #Z4pN8T3
public final static int HEAP = 9; 'rP]Nw
I 8
public static void sort(int[] data) { u0`o A
sort(data, IMPROVED_QUICK); N6oq90G
} #1-xw~_
private static String[] name={ ~vdkFc(8B
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W{cY6@
}; Q-TV*FD.
s Wjy6;
private static Sort[] impl=new Sort[]{ c8 K3.&P6
new InsertSort(), 3B0lb"e
new BubbleSort(), [t]X/O3<
new SelectionSort(), f2)XP$:
new ShellSort(), he3SR@\T
new QuickSort(), s=I'e/"7
new ImprovedQuickSort(), \g)Xt?w0Wo
new MergeSort(), RH;:9_*F
new ImprovedMergeSort(), a)-FGP^
new HeapSort() +0z 7KO%^^
}; d?,M/$h
0\{BWNK
public static String toString(int algorithm){ OU DcY@x~
return name[algorithm-1]; ^
?hA@{T/1
} %%%fL;-y
uv{P,]lK
public static void sort(int[] data, int algorithm) { Jc4L5*Xn/
impl[algorithm-1].sort(data); cX!Pz.C
} or ;f&![w
JHn*->m
public static interface Sort { }]P4-KqI
public void sort(int[] data); q!'rz
} Z@D*1\TG=
X+8B!F
public static void swap(int[] data, int i, int j) { |tMn={
int temp = data; /x@RNdKv
data = data[j]; e59dVFug.U
data[j] = temp; P3tx|:gV
} G1T^a>tj4
} Q'apG)0I