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。 VMXXBa&
插入排序: 1uQf}
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package org.rut.util.algorithm.support; Jjq%cA
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import org.rut.util.algorithm.SortUtil; 3?(p;
/** !AHm+C_=Lg
* @author treeroot _q$fw&
* @since 2006-2-2 jU~%5R
* @version 1.0 KYW1<Wcp
*/ Q~{@3<yEI
public class InsertSort implements SortUtil.Sort{ F'*&-l
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/* (non-Javadoc) sn#h=,*4`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Al]9/ML/m
*/ Q7%#3ML
public void sort(int[] data) { 8hp]+k_y
int temp; YTh4&wm
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); eP?|U.on
} &Hxr3[+$
} *p!dd?8
} Z`KmH.l!
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} Tq8r
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冒泡排序: lukV
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#"JU39e
package org.rut.util.algorithm.support; /GaR&
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import org.rut.util.algorithm.SortUtil; k 'b|#c9c
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/** .D`#a
* @author treeroot C%>7mz-v5
* @since 2006-2-2 M(jH"u&f
* @version 1.0 4UkLvL1x
*/ /B7
GH5
public class BubbleSort implements SortUtil.Sort{ dp+Y?ufr
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/* (non-Javadoc) !W7ekPnK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ Hd`RR3J
public void sort(int[] data) {
n9Yk;D2
int temp; .zt]R@@6
for(int i=0;i for(int j=data.length-1;j>i;j--){ K_}acU
if(data[j] SortUtil.swap(data,j,j-1); LsV"h<
} |_*1/Wz@
} uBgHtjmae
} RI;RE/Z
} ,Pm/ci(s
}tPl?P'`
} m+"%Jd{q
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选择排序: o*xEaD
_K>m9Q2
package org.rut.util.algorithm.support; <-pbLL 9
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import org.rut.util.algorithm.SortUtil; jGCW^#GE
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/** =3p h:t
* @author treeroot bJD"&h5
* @since 2006-2-2 HvTQycG
* @version 1.0 d6VKUAk'7>
*/ |T%/d#b~
public class SelectionSort implements SortUtil.Sort { [PT_y3'%
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/* vrGNiGIi[
* (non-Javadoc) K3^2R-3:8
* CmZ?uo+Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C*!_. <b
*/ .Yx.Lm}
public void sort(int[] data) { s@|?N+z
int temp; ceCshxTU
for (int i = 0; i < data.length; i++) { %XeU4yg\e
int lowIndex = i; .YkKIei
for (int j = data.length - 1; j > i; j--) { >Z%^|S9
if (data[j] < data[lowIndex]) { :xV&%Qa1
lowIndex = j; 4
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} 4hs4W,2!
} SccU@3.X~
SortUtil.swap(data,i,lowIndex); ?*;zS%93U9
} 49m/UeNZ
} GFidriC
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} ~0NZx8qG
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Shell排序: #C`!yU6(
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package org.rut.util.algorithm.support; ORoraEK
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import org.rut.util.algorithm.SortUtil; QQ9Q[c
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/** JoYzC8/r
* @author treeroot (ni$wjq=z^
* @since 2006-2-2 x1~`Z}LX0
* @version 1.0 r/e&}!
*/ DiX4wmQ
public class ShellSort implements SortUtil.Sort{ $4"OD"Z Cq
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/* (non-Javadoc) %WNy=V9txp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oKac~}_KL
*/ ^cNP?7g7
public void sort(int[] data) { `@&qf}`
for(int i=data.length/2;i>2;i/=2){ k#.co~kS
for(int j=0;j insertSort(data,j,i); @&+
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} <3bh-)
} ~"N]%Cu
insertSort(data,0,1); 3,?y !
} {e^llfj$#
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/** vBp5&*
* @param data ?>_.~b~
* @param j -|lnJg4
* @param i zM!*r~*k$
*/ Fmu R(f=
private void insertSort(int[] data, int start, int inc) { <O WPG,
int temp; R Mm`<:H_
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T^'i+>F!w
} ziOmmL(r
} p,+~dn;=
} l>ttxYBa<d
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} H{BjxZ~)
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快速排序: DM&"oa50
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package org.rut.util.algorithm.support; CeQcnJU
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import org.rut.util.algorithm.SortUtil; ,'j5tU?c
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/** wKYfqNCH
* @author treeroot 38#(ruv
* @since 2006-2-2 mf3 G$=[
* @version 1.0 LP~$7a
*/ Rq7ks To
public class QuickSort implements SortUtil.Sort{ 4c% :?H@2
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/* (non-Javadoc) =mZw71,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k"Is.[I?^
*/ g#AA.@/Z
public void sort(int[] data) { Q,$x6YwE
quickSort(data,0,data.length-1); (xTHin$
} R
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private void quickSort(int[] data,int i,int j){ 5s>9v
int pivotIndex=(i+j)/2; A1C@'9R*
file://swap &jJgAZ!
SortUtil.swap(data,pivotIndex,j); q\,H9/.0k
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int k=partition(data,i-1,j,data[j]); NF.SGga
SortUtil.swap(data,k,j); "*0
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if((k-i)>1) quickSort(data,i,k-1); $=bN=hE
if((j-k)>1) quickSort(data,k+1,j); !cpBX>{w
>|s=l`"Xz
} j@DyWm/7
/** @sDd:>t
* @param data IE6/
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* @param i @dXf_2Tv=
* @param j CtfSfSAUuu
* @return zQ[mO
*/ GA|q[<U
private int partition(int[] data, int l, int r,int pivot) { SbZk{lWcq
do{ |qr[*c 3$1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); SlZu-4J.-
SortUtil.swap(data,l,r); =$'Zmb
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} +)|2$$m
while(l SortUtil.swap(data,l,r); {p-%\nOC
return l; X;1q1X)K
} ;2iZX=P`n
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} IV*}w"r
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改进后的快速排序: Zy#r<j]T
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package org.rut.util.algorithm.support; Li'T{0)1)
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import org.rut.util.algorithm.SortUtil; \u*,~J)z
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/** V7^?jck
* @author treeroot NE! Xt <A
* @since 2006-2-2 +)Ty^;+[1
* @version 1.0 YT_kMy>
*/ o _-t/
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public class ImprovedQuickSort implements SortUtil.Sort { 2vXMrh\
3.jwOFH$
private static int MAX_STACK_SIZE=4096; LDNpEX~
private static int THRESHOLD=10; J+TYm%A;-
/* (non-Javadoc) Qknd ^%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i et|\4A
*/ +LyhF2
public void sort(int[] data) { B|Omz:c
int[] stack=new int[MAX_STACK_SIZE]; jfWIPN
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int top=-1; ^R\blJQ<^
int pivot; 4?&=H
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int pivotIndex,l,r; OT [t
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stack[++top]=0; sq^,l6es>
stack[++top]=data.length-1; A@#dv2JzP
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H
while(top>0){ b,'./{c0
int j=stack[top--]; Dn@ n:m
int i=stack[top--]; VcP#/&B|
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pivotIndex=(i+j)/2; Ax\Fg
5
pivot=data[pivotIndex]; %cv%u6 b
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SortUtil.swap(data,pivotIndex,j); -LY_7Kg
^TjFR*S'E
file://partition <omz9d1
l=i-1; ks{s
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r=j; \kRBJ1)|f
do{ 6y0C
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZDb`]c4(
SortUtil.swap(data,l,r); $?A]!Y;
} ufo?ZFq@$L
while(l SortUtil.swap(data,l,r); 'ZJ6p0
SortUtil.swap(data,l,j); u+V;r)J{
c:iMbJOn#
if((l-i)>THRESHOLD){ #B?7{#.1
stack[++top]=i; ,P:.'
stack[++top]=l-1; 4>|5B:
} 9GEcs(A*
if((j-l)>THRESHOLD){ `+gF|o9
stack[++top]=l+1; /j^zHrLN
stack[++top]=j; GZ e
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} ?=vwr,ir
KIS.4nt#d"
} ]uZH 0
file://new InsertSort().sort(data); v
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insertSort(data); {kzM*!g
} V^ :\/EU
/** DXiD>1(q
* @param data zf!c
*/ WX[ycm8
private void insertSort(int[] data) { qkEy$[D9
int temp; iaC$K@a{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q8D1MEBL`
} [brrziZ
} @!S$gTz
} EAI[J&c
+2g3%c0}
} zPXd]jIwV
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归并排序: *vb)d0}P
(UM+?]Qwy
package org.rut.util.algorithm.support; #i,O
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import org.rut.util.algorithm.SortUtil; 8 2qe|XD4p
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/** p<jr&zVEc>
* @author treeroot UOu&sg*o2B
* @since 2006-2-2 OU+*@2")t
* @version 1.0 J0K"WmW
*/ H0HYb\TX ?
public class MergeSort implements SortUtil.Sort{ `3OGCy
Bb o*
/* (non-Javadoc) y6s$.93
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,>^~u
*/ +u#x[xO
public void sort(int[] data) { 7%'<}u
int[] temp=new int[data.length]; |RmBa'.)z
mergeSort(data,temp,0,data.length-1); cBA[D~s
} Nt'5}
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private void mergeSort(int[] data,int[] temp,int l,int r){ K?>&Mr
int mid=(l+r)/2; }u&JX
if(l==r) return ; &-zI7@!
mergeSort(data,temp,l,mid); L_~G`Rb3
mergeSort(data,temp,mid+1,r); "&%Hb's
for(int i=l;i<=r;i++){ N7_Co;#(zK
temp=data; Xx^c?6YM
} m|k,8guG
int i1=l; 7Av]f3Zr
int i2=mid+1; 4Y2>w
for(int cur=l;cur<=r;cur++){ `zL9dlZ
if(i1==mid+1) J]UHq$B
data[cur]=temp[i2++]; '3Ri/V,
else if(i2>r) _e'mG'P(
data[cur]=temp[i1++];
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else if(temp[i1] data[cur]=temp[i1++]; r$7rYxFR
else P#xn!fMi
data[cur]=temp[i2++]; B]vj1m`9
} 6PH*]#PfoD
} )N/KQ[W
7Tbk ti;
} F)@<ZE
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改进后的归并排序: 6yb<4@LOb
RB"rx\u7K
package org.rut.util.algorithm.support; Ie~~L U
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import org.rut.util.algorithm.SortUtil; 0#JBz\
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/** QZlUUj\
* @author treeroot 6D0,ME#
* @since 2006-2-2 G!\xc
* @version 1.0 S%oGBY*Z
*/ }dz(DPd
public class ImprovedMergeSort implements SortUtil.Sort { b\2"1m0H
F0\ry "(t
private static final int THRESHOLD = 10; &u8c!;y$b
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/* JF
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* (non-Javadoc) ry0 =N^
* 2}b bdX x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v4$,Vt:7
*/ ?KN_J
public void sort(int[] data) { 3(%,2
int[] temp=new int[data.length]; #!/Nmd=Nj
mergeSort(data,temp,0,data.length-1); 8'_Y=7b0Nw
} ^Ram8fW
0"`skYJ@
private void mergeSort(int[] data, int[] temp, int l, int r) { d%hA~E1rR
int i, j, k; m5Kx}H~
int mid = (l + r) / 2; Mx"tUoU6z
if (l == r) MF`'r#@:wa
return; yKJ^hv"#
if ((mid - l) >= THRESHOLD) gISs+g
mergeSort(data, temp, l, mid); Vz*'^=(o&
else bRp[N
insertSort(data, l, mid - l + 1); WQx;tX
if ((r - mid) > THRESHOLD) KfNXX>'
mergeSort(data, temp, mid + 1, r); %u}sVRJ
else v knFtpx
insertSort(data, mid + 1, r - mid); YC'~8\x3z
@Hh"Y1B
for (i = l; i <= mid; i++) { B}X#oA
temp = data; e=jO_[
} 5MJ'/Fy(
for (j = 1; j <= r - mid; j++) { "puz-W'n
temp[r - j + 1] = data[j + mid]; R{_IrYk
} mQd?Tyvn
int a = temp[l]; @ni~ij
int b = temp[r]; Ne
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for (i = l, j = r, k = l; k <= r; k++) {
v%5(-
if (a < b) { &u-Bu;G.e
data[k] = temp[i++]; k 9rnT)YU
a = temp; $nn5;11@gY
} else { D,a%Je-r,
data[k] = temp[j--]; IJ;*N
b = temp[j]; =Qrz|$_rv
} OB22P%
} ?sYjFiE
} &v,p_'k
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/** 7g9 ^Jn
* @param data Ziimz}WHF
* @param l ".f:R9-
* @param i 5g5NTm`=<
*/ Umg81!
private void insertSort(int[] data, int start, int len) { WKsx|a]U
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Phu|
hx<
} n bk(FD6
} [[Z>(d$8
} TzGm562o%
} U.OX*-Cd
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堆排序: mNoqs&UB
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package org.rut.util.algorithm.support; M7,MxwZ0k
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import org.rut.util.algorithm.SortUtil; "6Uj:9
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/** zi
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* @author treeroot WmUW
i{
* @since 2006-2-2 A#&qoZ(C
* @version 1.0 Ir #V2]$
*/ z D<9A6AB
public class HeapSort implements SortUtil.Sort{ `gN68:B
N1~$ +
/* (non-Javadoc) "|`9{/]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X>7]g670@
*/ \*aLyyy3
public void sort(int[] data) { <|3v@
MaxHeap h=new MaxHeap(); \[1CDz=}1
h.init(data); !#1A7[WN
for(int i=0;i h.remove(); y$o=\:
System.arraycopy(h.queue,1,data,0,data.length); XS8~jBjx
} [[h)4H{T
=pyZ^/}P
private static class MaxHeap{ y4We}/-<
&> .1%x@R
void init(int[] data){ @;D}=$x
this.queue=new int[data.length+1]; es+_]:7B9
for(int i=0;i queue[++size]=data; B@inH]wq
fixUp(size); wS*CcIwj
} cu!bg+,zl
} 9Pk3}f)a
h./vTNMc
private int size=0; )=nPM`Jn.
!r
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private int[] queue; /(ju
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public int get() { '.
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return queue[1]; h!av)nhM
} l~TIFmHkh%
Gj8[*3d
public void remove() { 8:?Q(M7
SortUtil.swap(queue,1,size--); sJK:xk.6!
fixDown(1); 1[g!^5W
} Fi%W\Y'
file://fixdown h?3l
private void fixDown(int k) { DPQGh`J
int j; U4l*;od
while ((j = k << 1) <= size) { PJ'lZu8?x
if (j < size %26amp;%26amp; queue[j] j++; V,"iMo
if (queue[k]>queue[j]) file://不用交换 VfqY_NmgC
break; [j]J_S9jJ
SortUtil.swap(queue,j,k); >ydb?
k = j; G4%M$LJh
} emY5xZ@N
} 7h9[-d6
private void fixUp(int k) { m2q;^o:J
while (k > 1) { a05:iFoJ
int j = k >> 1; +M
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if (queue[j]>queue[k]) |;u%JW$4
break; QC5f:BwM
SortUtil.swap(queue,j,k); ?Ga2K
k = j; f@Rpb}zg+C
} &Dg)"Xji
} @W\4UX3dK
PBww
} pY!dG-;
|8qK%n f}
} u~- fK'/!|
QB3d7e)8>
SortUtil: }d3N`TT
{_toh/8)r
package org.rut.util.algorithm; #w,WwL!
oz0n$`O$/
import org.rut.util.algorithm.support.BubbleSort; R!k<l<9q
import org.rut.util.algorithm.support.HeapSort; +.(}u ,:8
import org.rut.util.algorithm.support.ImprovedMergeSort; JdUz!=I
import org.rut.util.algorithm.support.ImprovedQuickSort; r5!x,{E6
import org.rut.util.algorithm.support.InsertSort; Ns|V7|n]
import org.rut.util.algorithm.support.MergeSort; u->@|tEq
import org.rut.util.algorithm.support.QuickSort; E7NbPNd
import org.rut.util.algorithm.support.SelectionSort; g t^]32$
import org.rut.util.algorithm.support.ShellSort; 2VV[*QI
,KhMzE8_a
/** B==a
* @author treeroot tk)>CK11
* @since 2006-2-2 |IX` (
* @version 1.0 2^^'t 6@
*/ [[?[? V ,
public class SortUtil { :
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public final static int INSERT = 1; T7lj39pJq
public final static int BUBBLE = 2; n:*_uc^C
public final static int SELECTION = 3; vJj:9KcP>h
public final static int SHELL = 4; by|?g8
public final static int QUICK = 5; 9 yW~79n
public final static int IMPROVED_QUICK = 6; p17|ld`
public final static int MERGE = 7; eC^0I78x
public final static int IMPROVED_MERGE = 8; v(Bp1~PPZM
public final static int HEAP = 9; H#|Z8^ *Ds
gN, k/U8
public static void sort(int[] data) { :,%J6Zh?
sort(data, IMPROVED_QUICK); s
la*3~?*
} .YjrV+om1
private static String[] name={ xOVA1pb,
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" uhTKCR~
}; Wd^lt7(j
_z<Y#mik
private static Sort[] impl=new Sort[]{ +24|_Lx0
new InsertSort(), M$&WM{Pr^
new BubbleSort(), z)&naw.
new SelectionSort(), O>SuZ>g+7
new ShellSort(), RP~vB#}
new QuickSort(), %$ir a\
sM
new ImprovedQuickSort(), Z:UgozdC
new MergeSort(), q ab)
1ft
new ImprovedMergeSort(), VBbUl|X\
new HeapSort() %="~\1y
}; XN~#gm#
e0v9uQ%F5
public static String toString(int algorithm){ dysX
return name[algorithm-1]; DOF?(:8Y
} %z-dM` i
f[JI/H>
public static void sort(int[] data, int algorithm) { d s|8lz,
impl[algorithm-1].sort(data); ?jNF6z*M6
} qeQC&U
y;
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public static interface Sort { P[rAJJN/E
public void sort(int[] data); -GDV[Bg
} pAJ=f}",]E
|'U,/
public static void swap(int[] data, int i, int j) { ";)r*UgR{B
int temp = data; &\[Qm{lN
data = data[j]; I%;Rn:zl
data[j] = temp; o{{:|%m3Q
} *D=K{bUe'
} 0)A=+zSS1