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。 @jsDq
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插入排序: 8(~K~q[Cr
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package org.rut.util.algorithm.support; Cif>7]M
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import org.rut.util.algorithm.SortUtil; o .qf _A
/** oBzfbg8p
* @author treeroot H\:lxR^
* @since 2006-2-2 uFPF!Ern
* @version 1.0 7 D^gMN%p
*/ [g:$K5\64
public class InsertSort implements SortUtil.Sort{ /M3Y~l$
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/* (non-Javadoc) (tZrw5@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Bw|(J
*/ 5
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public void sort(int[] data) { &'
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int temp; 9&_<f}ou
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (<}&DE
} /q5v"iX]T
} /$'AjIg4:&
} 3~S8!nx
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} 9&` 2V
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冒泡排序: V&\[)D'c
gm[z[~X@
package org.rut.util.algorithm.support; i* NH'o/
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import org.rut.util.algorithm.SortUtil; 8=Z9T<K
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/** +L9Eqll
* @author treeroot ZfgJ.<<
* @since 2006-2-2 N,;5{y1;J
* @version 1.0 S7L=#+Z
*/ &qr;IL7'
public class BubbleSort implements SortUtil.Sort{ ML8<4o
H
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/* (non-Javadoc) :X]itTrGs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kMt 8/ E`
*/ @qnD=mE
public void sort(int[] data) { 6w(6}m.L^
int temp; A?t%e
for(int i=0;i for(int j=data.length-1;j>i;j--){ x*nSHb
if(data[j] SortUtil.swap(data,j,j-1); !qN||mCH
} 5yiK+-iTs
} OSf}Q=BL
} *Ie7{EhJ'
} <c,u3cp
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} W>p-u6u%E|
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选择排序: )8UWhl=
AbYqf%~7`l
package org.rut.util.algorithm.support; .On|uC)!
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import org.rut.util.algorithm.SortUtil; /gu%:vq
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/** 2U:H545]]
* @author treeroot p-/|mL
* @since 2006-2-2 lAJxr8 .
* @version 1.0 (3#Cl
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*/ 0#S W!b|%
public class SelectionSort implements SortUtil.Sort { K?zH35f$
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/* `P3>S(Tgy
* (non-Javadoc) Qe5U<3{JZ
* j"|=C$Kn/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /i-J&*6_
*/ ,;Hu=;
public void sort(int[] data) { =<X?sj5
int temp; .NvQm]N0.
for (int i = 0; i < data.length; i++) { g47-db"5
int lowIndex = i; W034N[9
for (int j = data.length - 1; j > i; j--) { |<.lW
if (data[j] < data[lowIndex]) { NCk r /#!
lowIndex = j; U]vYV
} z3K6%rb-
} NX/;+{
SortUtil.swap(data,i,lowIndex); $}=krz:r
} (s7;^)}zx
} V8HnUuz
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} 6u`)QUmItg
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Shell排序: L_+k12lm
(jFGa2{
package org.rut.util.algorithm.support; YH%'t=
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import org.rut.util.algorithm.SortUtil; O Vko+X`
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/** Ar:*oiU
* @author treeroot !2'jrJGc
* @since 2006-2-2 L?Qg#YSd~
* @version 1.0 (
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*/ \CXQo4P
public class ShellSort implements SortUtil.Sort{ 3`B6w$z>(
n ;$5Cq!v=
/* (non-Javadoc) ?kZTI (
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {FIXc^m'
*/ %QKRFPYhS
public void sort(int[] data) { 00SbH$SU
for(int i=data.length/2;i>2;i/=2){ 1}:bqI.<W
for(int j=0;j insertSort(data,j,i); _:-ha?W$;y
} =}v}my3y"
} L2pp6bW
insertSort(data,0,1); %T)oCjM[\
} kWe{r5C7
C_n9T{k
/**
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* @param data Nv/v$Z{k
* @param j @*Wh
* @param i `KK>~T_$J
*/ z(fAnn
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private void insertSort(int[] data, int start, int inc) { +S R+x/?z
int temp; kRTwaNDOD
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); f~dd3m('
} @Q^P{
} >9q&PEc
} &Ibu>di4[
(A?H1 9
} C#t'Y*
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快速排序: F^5?\
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; IZ=Mlu
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/** #ceaZn|@m
* @author treeroot xZQg'IT
* @since 2006-2-2 3$m4q`J
* @version 1.0 1\g6)|R-+
*/ P#_sg0oJF
public class QuickSort implements SortUtil.Sort{ m^H21P"z
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/* (non-Javadoc) qnoNT%xazo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {.De4]ANh
*/ CMCO}#
public void sort(int[] data) { |R56ho5C
quickSort(data,0,data.length-1); r4QxoaM
} $zyIuJN#
private void quickSort(int[] data,int i,int j){ Rhe Re
int pivotIndex=(i+j)/2; XvE9b5}
file://swap QR
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SortUtil.swap(data,pivotIndex,j); /,X[k !
*3&fqBg
int k=partition(data,i-1,j,data[j]); Ty<L8+B|
SortUtil.swap(data,k,j); AN24Sf'`
if((k-i)>1) quickSort(data,i,k-1); W3;#fa:[L
if((j-k)>1) quickSort(data,k+1,j); @EDs~ lPv
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} KGWyJ
/** 9(L)&S{4K
* @param data `8I&7c
* @param i g=]u^&
* @param j Oer^Rk
* @return .>mr%#p
*/ sp
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private int partition(int[] data, int l, int r,int pivot) { .{=$!8|&I9
do{ [<{Kw=X__2
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x)JOClLr
SortUtil.swap(data,l,r); cP}KU 5j
} gF0q@M y~
while(l SortUtil.swap(data,l,r); }>'PT-
return l; :OkT? (i
} j8n4fv-)f
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} #fL8Kq
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改进后的快速排序: T<L^N+<,{N
Pf_S[
sm
package org.rut.util.algorithm.support; E-{^E. w1
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import org.rut.util.algorithm.SortUtil; GHHav12][
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/** Ga^Zb^y
* @author treeroot Xu>r~^w=S
* @since 2006-2-2 r)1'ePI"
* @version 1.0 OZIW_'Wm/
*/ 24/XNSE,-
public class ImprovedQuickSort implements SortUtil.Sort { w,Lvt
}
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private static int MAX_STACK_SIZE=4096; VL/|tL>E^
private static int THRESHOLD=10; :Mcu
/* (non-Javadoc) \oEo~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "F}'~HWZp
*/ 581e+iC~<H
public void sort(int[] data) { js8{]04y
int[] stack=new int[MAX_STACK_SIZE]; Ik[s
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int top=-1; sU!6 hk
int pivot; XgxX.`H7
int pivotIndex,l,r; 4_UU<GEp
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stack[++top]=0; Z{
u a=0
stack[++top]=data.length-1; $F/EJ>
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while(top>0){ I`w4Xrd
int j=stack[top--]; U|5nNiJM
int i=stack[top--]; 7;tJK^J`
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pivotIndex=(i+j)/2; >rP#ukr5
pivot=data[pivotIndex]; I0'[!kBF|
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SortUtil.swap(data,pivotIndex,j); iajX ~kv
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file://partition NziZTU}
l=i-1; $Y9jrR'w
r=j; /\w)>0
do{ 'Vr$MaO
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); o d7]tOK9
SortUtil.swap(data,l,r); }HG#s4
} "ywh9cp
while(l SortUtil.swap(data,l,r); iz~
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SortUtil.swap(data,l,j); Yyfq
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if((l-i)>THRESHOLD){ AWjm~D-?
stack[++top]=i; oM)h#8bq
stack[++top]=l-1; w]_zp?\^
}
} t'~/$=9}
if((j-l)>THRESHOLD){ Y];Ycj;
stack[++top]=l+1; QnI.zq
V
stack[++top]=j; >?]_<:
} y?)}8T^
J j=;
} WA$>pG5s
file://new InsertSort().sort(data); `Rdm-[&
insertSort(data); CAU0)=M
} 0vGyI>
/** ;oxAe<VIj
* @param data ^Q{Bq
*/ H3H_u4_?SE
private void insertSort(int[] data) { /R
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int temp; NJ MJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X]y)ZF26
} Dl&GJ`&:p
} <X_!x_x
} !~ZP{IXyo
m,R Dr
} jDRe)bo4
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归并排序: %Td )0Lqp
vNW jH!'
package org.rut.util.algorithm.support; 2T)sXB u
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import org.rut.util.algorithm.SortUtil; !'f3>W\
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/** A;J MV+2N
* @author treeroot >m'x8xB=
* @since 2006-2-2 7$k8%lI;>
* @version 1.0 mF09U(ci
*/ a{!r`>I\f
public class MergeSort implements SortUtil.Sort{ 3SBZ>
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/* (non-Javadoc) ;XC@=RpX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U{ ;l0 2S
*/ e.o;eD}"
public void sort(int[] data) { _Hd{sd#xX1
int[] temp=new int[data.length]; vU*x2fVb}
mergeSort(data,temp,0,data.length-1); W"Jn(:&
} 8yWoPm<A
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private void mergeSort(int[] data,int[] temp,int l,int r){ Vh<A2u3&
int mid=(l+r)/2; + q''y
if(l==r) return ; J.RAmU <
mergeSort(data,temp,l,mid); '(#g1H3
mergeSort(data,temp,mid+1,r); ;$BdP7i:
for(int i=l;i<=r;i++){ X jE>k!=I
temp=data; gLL\F1|0x
} nPkZHIxuD
int i1=l; -Z^4L
int i2=mid+1; CkRX>)=py
for(int cur=l;cur<=r;cur++){ 1j\aH&)GH
if(i1==mid+1) _ jAo:K_Z
data[cur]=temp[i2++]; =C
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else if(i2>r) E4D (,s
data[cur]=temp[i1++]; ~SjZk|
else if(temp[i1] data[cur]=temp[i1++]; nMoWOP'
else Ra3ukYG[
data[cur]=temp[i2++]; !7U\J]
} ,}C8;/V
} }4nT.!5
A%vsno!
} AaN"7.Z/
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改进后的归并排序: PK&2h,Cu+
0m+8P$)C%
package org.rut.util.algorithm.support; 4Z)DDz-}V
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import org.rut.util.algorithm.SortUtil; ACjf\4Q
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/** ]v5-~E!
* @author treeroot Y'Z+, CNf
* @since 2006-2-2 ~]8p_;\
* @version 1.0 ^ft]b2i
*/ l[/q%Ca'>
public class ImprovedMergeSort implements SortUtil.Sort { 6U,fz#<,}
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private static final int THRESHOLD = 10; {5Eyr$
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/* E/za@W
* (non-Javadoc) 8,o17}NY,
* 3AlqBXE"Z<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MFg'YA2/
*/ C%ytkzG_
public void sort(int[] data) { 5@XV6
int[] temp=new int[data.length]; hkW{88
mergeSort(data,temp,0,data.length-1); qSQ@p\O~
} ^p_u.P
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private void mergeSort(int[] data, int[] temp, int l, int r) { &-GuKH(Y<
int i, j, k; (G4'(6
int mid = (l + r) / 2; <]8^J}8T{D
if (l == r) ?An,-N-ezf
return; [U_[</L7
if ((mid - l) >= THRESHOLD) 0k?Sq#7q
mergeSort(data, temp, l, mid); >$F:*lO
else XKq@]=\F
insertSort(data, l, mid - l + 1); Qa$NBNxKl
if ((r - mid) > THRESHOLD) v_sm
mergeSort(data, temp, mid + 1, r); 7aQcP
else 7nz!0I^
insertSort(data, mid + 1, r - mid); BDpF}
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for (i = l; i <= mid; i++) { >IR$e=5$
temp = data; *`KrVu 6s
} bV3lE6z
for (j = 1; j <= r - mid; j++) { Yjup
temp[r - j + 1] = data[j + mid]; wO"GtVd
}
q{X T
int a = temp[l]; 7<yp"5><)
int b = temp[r]; {(\(m/!Z
for (i = l, j = r, k = l; k <= r; k++) { PZ34 *q
if (a < b) { 7Qh_8M
data[k] = temp[i++]; K&UE0JO'
a = temp; B
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} else { k!doIMj
data[k] = temp[j--]; (^H5EeGV{
b = temp[j]; m1e b8yX
} 9bn2UiJk
} ;,0lUcV
} 9Q@*0-
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/** "2mFC!
* @param data +5*vABvCu
* @param l y`b\;kd
* @param i +v[O
*/ ?`A9(#ySM
private void insertSort(int[] data, int start, int len) { :^G%57NX
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0VIZ=-e
} k_Tswf3
} <bdyAUeFw
} 9d"5wx
} l^,qO3ES
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堆排序: Qcgu`]7}
Wy(pLBmb
package org.rut.util.algorithm.support; 6_U|(f
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import org.rut.util.algorithm.SortUtil; 2 `5=0E1k
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/** gUGOHd(A
* @author treeroot S'?fJ.
* @since 2006-2-2 NQ!<f\m4n
* @version 1.0 J" bD\%
*/ ;\s~%~\
public class HeapSort implements SortUtil.Sort{ _:5=|2-E
6To:T[ z#
/* (non-Javadoc) DVzssPg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q5?L1
*/ 966<I56+
public void sort(int[] data) { JmjxGcG
MaxHeap h=new MaxHeap(); \ 522,n`
h.init(data); O!];_q/
for(int i=0;i h.remove(); ss;
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System.arraycopy(h.queue,1,data,0,data.length); S*rO0s:
} `r]TA]DR
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private static class MaxHeap{ M1(9A>|nF
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void init(int[] data){ K6(.KEW
this.queue=new int[data.length+1]; #7\b\~5
for(int i=0;i queue[++size]=data; ;[caiMA-
fixUp(size); 8{@`kyy|
} IM$0#2\
} j=Q$K#sBt
od(:Y(4
private int size=0; b=_{/F*b?
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private int[] queue; <c\]Ct
NGj"ByVjx
public int get() { [Gf{f\O
return queue[1]; fwH`}<o
} ?k::tNv0
_iq2([BpL
public void remove() { JE9>8+
SortUtil.swap(queue,1,size--); U,38qKE
fixDown(1); \2Xx%SX
} vQy$[D*
file://fixdown 08O7F
private void fixDown(int k) { 3/l\ <{
int j; u6p5:oJj,
while ((j = k << 1) <= size) { ,,}sK
if (j < size %26amp;%26amp; queue[j] j++; ,wlbIl~
if (queue[k]>queue[j]) file://不用交换 1wbTqc
break; f^u^-l
SortUtil.swap(queue,j,k); J&
)#G@fRX
k = j;
Db,= 2e
} XW^8A77H
} Wk,6) jS=}
private void fixUp(int k) { i[8NO$tN1)
while (k > 1) { b^%?S8]h
int j = k >> 1; gjQ=8&i
if (queue[j]>queue[k]) vi<X3G6Xh
break; }/49T
SortUtil.swap(queue,j,k); ?n&$m
k = j; /_HwifRQ
} d>;2,srUf
} .P8-~?&M
) (+)Q'*
} }R`Irxv4
2H3(HZv
} K Ka c6Zj
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SortUtil: ^~,
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package org.rut.util.algorithm; KCl &H
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import org.rut.util.algorithm.support.BubbleSort; @Mzz2&(dU
import org.rut.util.algorithm.support.HeapSort; ^J0zXe -d
import org.rut.util.algorithm.support.ImprovedMergeSort; l`G(O$ct
import org.rut.util.algorithm.support.ImprovedQuickSort; =p5?+3"@
import org.rut.util.algorithm.support.InsertSort; erXy>H[;
import org.rut.util.algorithm.support.MergeSort; Esb?U|F4
import org.rut.util.algorithm.support.QuickSort; y%2%^wF
import org.rut.util.algorithm.support.SelectionSort; D7M0NEY
import org.rut.util.algorithm.support.ShellSort; ^t`f1rGR
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/** q%DVDq( z
* @author treeroot M q76]I%
* @since 2006-2-2 xkF$D:sP
* @version 1.0 jzMhJ
*/ ~c!Rx'
public class SortUtil { ot]>}[
public final static int INSERT = 1; x3gwG)Sf
public final static int BUBBLE = 2; \ibCR~W4
public final static int SELECTION = 3; 32s5-.{c/f
public final static int SHELL = 4; Is<x31R
public final static int QUICK = 5; >1m)%zt
public final static int IMPROVED_QUICK = 6; xnT3^ #-h
public final static int MERGE = 7; " \`BPN
public final static int IMPROVED_MERGE = 8; W0C{~|e
public final static int HEAP = 9; HgYc@P*b
@l)\?IEF@f
public static void sort(int[] data) { (rAiDRQ[
sort(data, IMPROVED_QUICK); )\D2\1e(c
} dFx2>6AZt
private static String[] name={ fV*}c`
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Go-wAJ>
}; Y+!Ouc!$
wH+FFXGJs
private static Sort[] impl=new Sort[]{ 4=~ 9v
new InsertSort(), >'eB2
new BubbleSort(), Z+r%_|kZ
new SelectionSort(), mVa?aWpez
new ShellSort(), Q@7l"8#[t
new QuickSort(), nt drXg
new ImprovedQuickSort(), ,tcP=fdk]
new MergeSort(), "3\oQvi.
new ImprovedMergeSort(), |
A3U@>6
new HeapSort() MRjH40"2
}; +{5JDyh0
1XqIPiXJ
public static String toString(int algorithm){ @c6"RHG9
return name[algorithm-1]; s.VUdR"
} fEHh]%GT`
}A^1q5
public static void sort(int[] data, int algorithm) { 7fap*
impl[algorithm-1].sort(data); c9\B[@-q
} os}b?I*K
wy,Jw3
public static interface Sort { wCV>F-
public void sort(int[] data); #L_@s
d
} NS7@8 #C
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public static void swap(int[] data, int i, int j) { N|UBaPS|o
int temp = data; )`B
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data = data[j]; <P+G7!KZ&
data[j] = temp; 0\?_lT2
} Aqa6R+c
} `%FIgE^