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。 E'KKR1t
插入排序: i(qPD_
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package org.rut.util.algorithm.support; ( :h#H[F
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import org.rut.util.algorithm.SortUtil; T>P[0`*)
/** lX)ZQY:= :
* @author treeroot SOg>0VH)
* @since 2006-2-2 3OZu v};k
* @version 1.0 /k_?S?
*/ md
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public class InsertSort implements SortUtil.Sort{ r
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/* (non-Javadoc) B QxU~s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .=`r?#0
*/ ))NiX^)8^
public void sort(int[] data) { SJ0IEPk
int temp; G_1`NyI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _+=M)lPm
} V(#z{!
} i!KZg74V
} + $Yld{i
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} L;%_r)
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冒泡排序: wbImE;-Z
8n2MZ9p]
package org.rut.util.algorithm.support; u#bd*(
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import org.rut.util.algorithm.SortUtil; qvH RP@
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/** Or:a\qQ1
* @author treeroot + 7~u_J
* @since 2006-2-2 /$-Tg)o5i
* @version 1.0 31*0b|Z
*/ .$]%gjIBCl
public class BubbleSort implements SortUtil.Sort{ +CaA%u
d(t$riFX}
/* (non-Javadoc) Rzj1D:?X@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f#>ubmuI^
*/ 31-:xUIX
public void sort(int[] data) { {];8jdg/?
int temp; r5w y]z^
for(int i=0;i for(int j=data.length-1;j>i;j--){ =k0qj_
if(data[j] SortUtil.swap(data,j,j-1); 'n$TJp|s
} QA"mWw-Ds
} azKiXr#_(
} $C^tZFq
} oU[>.Igi
@gM>Lxj
} S`t@L}
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选择排序: /9wmc2
0Z,a3)jcc
package org.rut.util.algorithm.support; )}|b6{{<
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import org.rut.util.algorithm.SortUtil; l =`?Im
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/** &ZR} Z7E*=
* @author treeroot V'Z Z4og
* @since 2006-2-2 V;-$k@$b.
* @version 1.0 9\J6G8b>|I
*/ kKlcK_b;
public class SelectionSort implements SortUtil.Sort { *=
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/* p*ic@n*G
* (non-Javadoc) rAwuWM@BIg
* ==XO:P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hT
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*/ fBw"<J{
public void sort(int[] data) { TDY2
M
int temp; <RaUs2Q3.
for (int i = 0; i < data.length; i++) { 6a MG!_jC
int lowIndex = i; B{6wf)[O
for (int j = data.length - 1; j > i; j--) { +[_mSt
if (data[j] < data[lowIndex]) { PgMU|O7To
lowIndex = j; sCrOdJ6|
} s%OPoRE
} D.;iz>_}Y
SortUtil.swap(data,i,lowIndex); RASPOc/]
} 1RM@~I$0
} Smc=-M}
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} zu52]$Vj
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Shell排序: YQ
_]Jv k
W[4 V#&Z
package org.rut.util.algorithm.support; "MX9h }7
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import org.rut.util.algorithm.SortUtil; [!'fE#"a
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/** 4apy {W
* @author treeroot Yn+d!w<3:
* @since 2006-2-2 6-6ha7]s
* @version 1.0 X:kqX[\>
*/ <>?7veN92
public class ShellSort implements SortUtil.Sort{ |%~Zo:Q<$>
l'm\*=3
/* (non-Javadoc) Z^_-LX:%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \:Vm7Zg
*/
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public void sort(int[] data) { q1_iV.G<
for(int i=data.length/2;i>2;i/=2){ U5!~@XjG>
for(int j=0;j insertSort(data,j,i); P+2@,?9#
} p?idl`?^3
} ih\=mB
insertSort(data,0,1); ra]lC7<H
} c80!Ub@
WMk;-,S!)
/** s+a} _a:
* @param data }Y`D^z~
* @param j ?j^:jV
* @param i }T1.~E
*/ FA7q
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private void insertSort(int[] data, int start, int inc) { ~[ZRE @
int temp; 3<A$lG
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);
qC4Q+"'
} *w,C5 f
} =4_Er{AT
} `~;`q
0CR~ vQf#r
} QXLHQ_V
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快速排序: HpGI\s
QFX/x
package org.rut.util.algorithm.support; (Rs052m1
[#mRlL0yk
import org.rut.util.algorithm.SortUtil; (JI[y"2
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/** Ef2i#BoZ
* @author treeroot UY~N4IR8
* @since 2006-2-2 K|V<e[X[V
* @version 1.0 +DwE~l
*/ OGWZq(c"6
public class QuickSort implements SortUtil.Sort{ 6i7+.#s
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/* (non-Javadoc) ,C;%AS/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W<tw],M-#
*/ ;w(tXcXZ
public void sort(int[] data) { /+JHnedK
quickSort(data,0,data.length-1); a,`f`;\7N%
} W:S?_JM
private void quickSort(int[] data,int i,int j){ ]X\p\n'@j
int pivotIndex=(i+j)/2; 'MK"*W8QRM
file://swap 7M, (!*b
SortUtil.swap(data,pivotIndex,j); -POsbb>
<;P40jDL
int k=partition(data,i-1,j,data[j]); PHU$<>
SortUtil.swap(data,k,j); 0qp Pz|h
if((k-i)>1) quickSort(data,i,k-1); /^rJ`M[;
if((j-k)>1) quickSort(data,k+1,j); #Mm1yXNu
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} {NTMvJLm
/** DNu-Ce%
* @param data HD!2|b~@
* @param i eo&^~OVT
* @param j A(}D76o_
* @return IlfH
*/ k^Qd%;bdF
private int partition(int[] data, int l, int r,int pivot) { Z3qr2/
do{ Boj#r ,x
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >hv8zHOO:
SortUtil.swap(data,l,r); *&O4b3R
} <sw fYT!N
while(l SortUtil.swap(data,l,r); h\lyt(.s
return l; :D:Y-cG*n<
} F XG,DJ:
@Pb%dS
} `;HZO8
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改进后的快速排序: ln*jak RrC
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package org.rut.util.algorithm.support; PTP0 _|K
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import org.rut.util.algorithm.SortUtil; G}LOQ7
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/** sa
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* @author treeroot |*>s%nF|
* @since 2006-2-2 #I}w$j
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* @version 1.0 Wf{&D>
*/ /C6$B)w_*{
public class ImprovedQuickSort implements SortUtil.Sort { 34:Y_*
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private static int MAX_STACK_SIZE=4096; L#MgoBXr
private static int THRESHOLD=10; 9+"ISXS
/* (non-Javadoc) 1TlMB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GV8`.3DBOF
*/ +HkEbR'G0
public void sort(int[] data) { w[]\%`69}Z
int[] stack=new int[MAX_STACK_SIZE]; 7RCVqc"
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int top=-1; Y.KJP ?
int pivot; F~C7$
int pivotIndex,l,r; 0lLg uBW@
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stack[++top]=0; *3# RS
stack[++top]=data.length-1; @d_9NOmNT
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while(top>0){ <Gj]XAoe%
int j=stack[top--]; avy@)iO7
int i=stack[top--]; on.m
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pivotIndex=(i+j)/2; lXip%6c7
pivot=data[pivotIndex]; auHP^O>4L
0w!:YB ,}
SortUtil.swap(data,pivotIndex,j); *0/%R{+S
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file://partition siz:YRur
l=i-1; aE[:9{<|
r=j; kJ"}JRA<
do{ vl>_;}W7
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ks7id[~&iY
SortUtil.swap(data,l,r); $E-c%-
} 3B5 `Y
while(l SortUtil.swap(data,l,r); so_^%)
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SortUtil.swap(data,l,j); &I7T?
48LzI@H&
if((l-i)>THRESHOLD){ CZ.HQc
stack[++top]=i; 9t+:L(*pK
stack[++top]=l-1; 6yK"g7
} /NUu^ N
if((j-l)>THRESHOLD){ %9b TfX"
stack[++top]=l+1; Sh(XFUJ
stack[++top]=j; {nH*Wu*^
} C]M{
[[uZCKi
} UUEbtZH;
file://new InsertSort().sort(data); j"9Zaq_
insertSort(data); 1O+$"5H
} l
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/** PBb'`PV
* @param data \OVw
*/ :~\ y<
private void insertSort(int[] data) { p!7(ayu
int temp; S4D~`"4$/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wpa^]l
} VWW(=j
}
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} ,B$e'KQ
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} (|sqN8SbA
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归并排序: &Vbcwv@
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package org.rut.util.algorithm.support; ~' q&rvk`
kY#sQz}8
import org.rut.util.algorithm.SortUtil; <ELqj2`c
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/** lB(P+yY,/'
* @author treeroot YzYj/,?r
* @since 2006-2-2 /Y8{?
* @version 1.0 0pA>w8 mh
*/ B+lnxr0t
public class MergeSort implements SortUtil.Sort{ oB%j3aAH
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/* (non-Javadoc) v7mg8'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pXf5/u8&
*/ S<>u
public void sort(int[] data) { W{nDmG`yp
int[] temp=new int[data.length]; YLid2aF
mergeSort(data,temp,0,data.length-1); -9yWf8;
} $}.#0c8I
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private void mergeSort(int[] data,int[] temp,int l,int r){ M4K>/-9X+V
int mid=(l+r)/2; `sM^m`yE
if(l==r) return ; _SqUPTb"u
mergeSort(data,temp,l,mid); p1fy)K2{,j
mergeSort(data,temp,mid+1,r); ?}<Wmy2A
for(int i=l;i<=r;i++){ &NK6U
temp=data; Gt;U9k|i
} m-R`(
int i1=l; yD(v_J*
int i2=mid+1; c{!XDiT]P
for(int cur=l;cur<=r;cur++){ vf?m-wh
if(i1==mid+1) 9On(b|mT
data[cur]=temp[i2++]; ICUI0/J
else if(i2>r) I=|}%WO#
data[cur]=temp[i1++]; H#B97IGT
else if(temp[i1] data[cur]=temp[i1++]; =EUi|T4:
else ?Bsc;:KF
data[cur]=temp[i2++]; !N\i9w}
} 6Lz:J:Q)
} B^BbA-I
kx07Ium
} g/OL^A
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改进后的归并排序: 89[OaT_hs
XZ_vbYTj
package org.rut.util.algorithm.support; }bYk#6KX
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import org.rut.util.algorithm.SortUtil; c'Zs2s7$
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/** -4t!k
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* @author treeroot O*PJr[Zou
* @since 2006-2-2 OB\jq!"
* @version 1.0 JV;-P=o1B
*/ HKYJgx
public class ImprovedMergeSort implements SortUtil.Sort { *"sDsXo- I
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private static final int THRESHOLD = 10; YHI@Cj
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/* 5
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* (non-Javadoc) FWuk@t[<O
* i`EG80\[Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qh/}/Sl;
*/ EALgBv>#ZL
public void sort(int[] data) { T<~?7-O"
int[] temp=new int[data.length]; )U:W
9%
mergeSort(data,temp,0,data.length-1); kqp*o+Oz',
} ~k/GmH
2qDVAq^@
private void mergeSort(int[] data, int[] temp, int l, int r) { ( 2i{8
int i, j, k; Y1L7s H 9
int mid = (l + r) / 2; 0 A6%!h
if (l == r) OM#eJ,MH<)
return; Nx<%'-9)|
if ((mid - l) >= THRESHOLD) z#t;n
mergeSort(data, temp, l, mid); IGcYPL\&
else Un{ 9reX5
insertSort(data, l, mid - l + 1); @M8vPH
if ((r - mid) > THRESHOLD) [h~#5x
mergeSort(data, temp, mid + 1, r); T|ZJ$E0
else o7t#yw3
insertSort(data, mid + 1, r - mid); }XIUz|
^3w
>:4m
for (i = l; i <= mid; i++) { |f<-lB[k
temp = data; HbQ+:B]
} #~:@H&f790
for (j = 1; j <= r - mid; j++) { o :_'R5
temp[r - j + 1] = data[j + mid]; [qQ~\]
} y<*/\]t9L[
int a = temp[l]; ^y3snuLtE
int b = temp[r]; Qj(|uGqm3
for (i = l, j = r, k = l; k <= r; k++) { L(\o66a-rV
if (a < b) { f>jAu;S
data[k] = temp[i++]; xGo,x+U*
a = temp; z*OQ4_
} else { ,-_\Y hY>
data[k] = temp[j--]; Yp8GW1@
b = temp[j]; Yb Dz{m
} fv?vfI+m
} \EOPlyf8x
} 9{XC9\~
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/** ahqsbNu1
* @param data 3Fl!pq]
* @param l Q:sw*7"F
* @param i }
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*/
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private void insertSort(int[] data, int start, int len) { OAd}#R\U
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); E6mwvrm8
} @G:aW\Z
} G$!JJ.
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} vILq5iR
} L[cl$pYV
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堆排序: t&L+]I'P3
p:CpY'KV_
package org.rut.util.algorithm.support; "L~qsFL
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import org.rut.util.algorithm.SortUtil; F)^:WWVc#
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/** y{]iwO;
* @author treeroot 2/ v9
* @since 2006-2-2 O6Jn$'os1#
* @version 1.0 =&xNdc
*/ 'Z=8no`<
public class HeapSort implements SortUtil.Sort{ >)p8^jX
/1R` E9
/* (non-Javadoc) WwBs_OMc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %`1p 8>n
*/ hd)HJb-aR
public void sort(int[] data) { u?+i5=N9{
MaxHeap h=new MaxHeap(); k x26nDT(
h.init(data); x=~$ik++
for(int i=0;i h.remove(); uDXRw*rTv
System.arraycopy(h.queue,1,data,0,data.length); T0=%RID%=
} B+8B<xZ
9et%Hn.K'
private static class MaxHeap{ qH1&tW$
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void init(int[] data){ ]E!b&
this.queue=new int[data.length+1]; ^B`*4
for(int i=0;i queue[++size]=data; /6PL
fixUp(size); 9C2DW,?
} 1L\\](^
3
} #`(-Oj2hH
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private int size=0; F.[E;gOTo
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private int[] queue; mxQPOu
a8wQ,
public int get() { OELh6R
return queue[1]; 8Z:T.Gc
} z1R_a=7
B(TE?[ #
public void remove() { aH!2zC\:T
SortUtil.swap(queue,1,size--); 0l&#%wmJ,
fixDown(1); _2N7E#m" S
} \2Atm,#4
file://fixdown &W@#pG
private void fixDown(int k) { yRF
%SWO
int j; { *&Wc Os
while ((j = k << 1) <= size) { :t8?!9g
if (j < size %26amp;%26amp; queue[j] j++; O<KOsu1WW
if (queue[k]>queue[j]) file://不用交换 Y)oF;ko:
break; ta'{S=^j
SortUtil.swap(queue,j,k); ;VI/iwg
k = j; / 80Q
} |k ]{WCD]
} pDloew
private void fixUp(int k) { PZjK6]N\
while (k > 1) { #o/
int j = k >> 1; N!#0O.6
if (queue[j]>queue[k]) n |e=7?H8
break; UcI;(Va
SortUtil.swap(queue,j,k); H0P:t(<Gt
k = j; T4lE-g2%M
} Z;qgB7-M
} ]8;2Oh
9ER!K
} '1r<g\l
+IkL=/';#
} ) ]
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io1hUZ
SortUtil: {^jk_G\ys
lI*uF~ 'D
package org.rut.util.algorithm; W8><
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import org.rut.util.algorithm.support.BubbleSort;
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import org.rut.util.algorithm.support.HeapSort; 9-(
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import org.rut.util.algorithm.support.ImprovedMergeSort; BdQ/kXZu+
import org.rut.util.algorithm.support.ImprovedQuickSort; }F<=
import org.rut.util.algorithm.support.InsertSort; ]aN]H a
import org.rut.util.algorithm.support.MergeSort; k`u.:C&
import org.rut.util.algorithm.support.QuickSort; ObyF~j}j
import org.rut.util.algorithm.support.SelectionSort; ["65\GI?
import org.rut.util.algorithm.support.ShellSort; DbIn3/WNe
' ] $mt
/** 5dXDL~/2p
* @author treeroot j
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* @since 2006-2-2 4!k0
* @version 1.0 li7"{+ct
*/ L7rH=gZ&!]
public class SortUtil { u P&<
public final static int INSERT = 1; Mr6 q7
public final static int BUBBLE = 2; l?Qbwv}
public final static int SELECTION = 3; HV}*}Ty
public final static int SHELL = 4; OB5t+_s
public final static int QUICK = 5; GJo`9
public final static int IMPROVED_QUICK = 6; oT}-i [=}
public final static int MERGE = 7; wk[4Qsk<
public final static int IMPROVED_MERGE = 8; hqwDlapTt
public final static int HEAP = 9; N6thbH@
7LrWS83
public static void sort(int[] data) { )r|Pm-:A{
sort(data, IMPROVED_QUICK); cf{rK`Ff^
} IQNvhl.{
private static String[] name={ 59X'-fg ,
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y0Bd[
}; 3Q\k!$zq
tB/'3#o
private static Sort[] impl=new Sort[]{ ,\^RyHg
new InsertSort(), uJ9
hU`h
new BubbleSort(), >tQ$V<YB
new SelectionSort(), 57`*5X
new ShellSort(), YU6D;
new QuickSort(), 9J4gDw4<
new ImprovedQuickSort(), E~K5n2CI
new MergeSort(), f C_H0h3
new ImprovedMergeSort(), H5X.CcI&}
new HeapSort() r
t\eze_5A
}; "IuPg=|#
<<~swN
public static String toString(int algorithm){ x4^*YZc$,
return name[algorithm-1]; qtYVX:M@,
} h'|J$
=OR"Bd:O
public static void sort(int[] data, int algorithm) { <S@XK%
impl[algorithm-1].sort(data); >m'n#=yap
} jx[g;7~X
,/Usyb,`
public static interface Sort { m!LJK`gA
public void sort(int[] data); /Ps5Og
} RQQ\y`h`
hreG5g9{
public static void swap(int[] data, int i, int j) { mh"9V5T
int temp = data; sRaTRL2
data = data[j]; t^5xq8w8
data[j] = temp; ;oGpB#[zO
} T'${*NVn
} wG}Rh,