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。 -ckk2D?
插入排序: -(4)lw>U
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package org.rut.util.algorithm.support; =#||&1U$
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import org.rut.util.algorithm.SortUtil; b/:&iG;
/** x,a(O@
* @author treeroot 2B{~"<
* @since 2006-2-2 tY^ MP5*
* @version 1.0 Z> jk\[
*/ y-qbK0=X4
public class InsertSort implements SortUtil.Sort{ !fXw X3B
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/* (non-Javadoc) e$M \HPc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K
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*/ Mj2o>N2,
public void sort(int[] data) { Ai&-W
int temp; !%<bLD8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8jW"8~Y#0
} \*Roa&<!
} gz-X4A"
} V)CS,w
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} 8y5iT?.~vy
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冒泡排序: s*.CJ
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package org.rut.util.algorithm.support; t(YrF,
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import org.rut.util.algorithm.SortUtil;
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/** E? 1"&D
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* @author treeroot kXGJZ$
* @since 2006-2-2 y%A!|aBu
* @version 1.0 1Uz sw
*/ <<}t&qE%2%
public class BubbleSort implements SortUtil.Sort{ Fp52|w_
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/* (non-Javadoc) ],l
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n4Od4&r
*/ E^z\b *
public void sort(int[] data) { EY=`/~|c
int temp; @giJ&3S,
for(int i=0;i for(int j=data.length-1;j>i;j--){ .:?X<=!S&t
if(data[j] SortUtil.swap(data,j,j-1); B@Acm
} z DDvXz
} 42X N*br
} cn1UFmT
} -I-u.!
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} 7'g'qUW+~
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选择排序: kk_$j_0
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package org.rut.util.algorithm.support; UruD&=AMK
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import org.rut.util.algorithm.SortUtil; f;1DhAS
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/** 7#K%Bo2pG
* @author treeroot wLyQ <[$
* @since 2006-2-2 K?[*9Q'\
* @version 1.0 Ml`tDt|;
*/ R[Y]B$XO
public class SelectionSort implements SortUtil.Sort { H'N$Vv2q
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/* DA'A-C2
* (non-Javadoc) \LX!n!@
* ;Ml??B]C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M{ #
*/ LgN\%5f-
public void sort(int[] data) { {k.Dy92
int temp; L'XX++2
for (int i = 0; i < data.length; i++) { nO{@p_3mi
int lowIndex = i; Wez"E2J`
for (int j = data.length - 1; j > i; j--) { ?M'_L']N[
if (data[j] < data[lowIndex]) { x2gnB@t
lowIndex = j; t Dx!m~[
} 9Yih%d,
} @* a'B=7
SortUtil.swap(data,i,lowIndex); TG ,T>'
} d4@\5<
} E[N5vG<
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} x|B$n} B
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Shell排序: 3,qq\gxB
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package org.rut.util.algorithm.support; 4j9
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import org.rut.util.algorithm.SortUtil; b"x[+&%i
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/** B{IYVviiP
* @author treeroot 7gIK+1`
* @since 2006-2-2 C~\/FrO?
* @version 1.0 @R+bR<}]
*/ 'M"JF;*r
public class ShellSort implements SortUtil.Sort{ E]x)Qr2Ju
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/* (non-Javadoc) = ~{n-rMF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sb_T _m
*/ nv WTx4oy
public void sort(int[] data) { yP :/F|E$
for(int i=data.length/2;i>2;i/=2){ 9d ZE#l!Q
for(int j=0;j insertSort(data,j,i); slSQ \;CDA
} AEx|<E0
} UPtWj8h
insertSort(data,0,1); xgl~4
} wFr}]<=Mi
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/** Zkn$D:
* @param data ]KX _a1e
* @param j <a>\.d9#)7
* @param i $,+'|_0yM
*/ A/kRw'6
private void insertSort(int[] data, int start, int inc) { cp|&&q
int temp; ![O@{/
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); IEb"tsel
} .:eNL]2%:
} ]V9z)uz
} gemjLuf
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} :v/6k
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快速排序: {,r7dxI)`
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package org.rut.util.algorithm.support; dt NHj/\
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import org.rut.util.algorithm.SortUtil; D}Jhg`9
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/** k^A Yg!~
* @author treeroot cE
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* @since 2006-2-2 i?^Cc\gH
* @version 1.0 |.D_[QI
*/ 5u ED
public class QuickSort implements SortUtil.Sort{ USVM' ~p I
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/* (non-Javadoc) 5H_%inWM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3HsjF5?W
*/ ,6[}qw)*
public void sort(int[] data) { -e_+x'uF
quickSort(data,0,data.length-1); 5[WhjTo
} {Kp<T
private void quickSort(int[] data,int i,int j){ W68d"J%>_
int pivotIndex=(i+j)/2; A:"J&TbBx
file://swap =2%EIZ0oW
SortUtil.swap(data,pivotIndex,j); \!8`kC
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int k=partition(data,i-1,j,data[j]); a7G0
SortUtil.swap(data,k,j); gIA{6,A
if((k-i)>1) quickSort(data,i,k-1); =l`xXma
if((j-k)>1) quickSort(data,k+1,j); yVPkJ
#UREFwSL
} v2<roG6.V
/** ^
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* @param data _`!@
* @param i Fj c+{;x
* @param j \6B,\l]$t@
* @return e=t?mDh#E
*/ Qi^MfHW
private int partition(int[] data, int l, int r,int pivot) { Z-m,~Hh
do{ ]y6`9p
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fTi,S)F'
SortUtil.swap(data,l,r); Xq&x<td
} zE VJ
while(l SortUtil.swap(data,l,r); 8uME6]m
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return l; sV7dgvVd
} lj"L Q(^
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} Y^gK^?K
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改进后的快速排序: LX.1]T*m`
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package org.rut.util.algorithm.support; ak50]KYo
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import org.rut.util.algorithm.SortUtil; lv}U-vK
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/** 1QRE-ndc
* @author treeroot ;%
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* @since 2006-2-2 8|[\Tp:;
* @version 1.0 ma LJ M\C
*/ :V2j'R,
public class ImprovedQuickSort implements SortUtil.Sort { {jzN
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private static int MAX_STACK_SIZE=4096; D%LM"p
private static int THRESHOLD=10; *?oQ6g(Nz
/* (non-Javadoc) v8Nc quv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aDa}@-F&a
*/ &sL5Pt_
public void sort(int[] data) { Yfy6o6*:
int[] stack=new int[MAX_STACK_SIZE]; 8xmw-s)
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int top=-1; yz-IZt(
int pivot; sZ-]yr\E"
int pivotIndex,l,r; uVqJl{e\
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stack[++top]=0; ,TU!W|($
stack[++top]=data.length-1; >
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while(top>0){ uqZLlP#
int j=stack[top--]; XzQ=8r>l
int i=stack[top--]; @.kv",[{[
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pivotIndex=(i+j)/2; |aN0|O2
pivot=data[pivotIndex]; fDq,
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SortUtil.swap(data,pivotIndex,j); bi!4I<E>k
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file://partition ^e8R43w:!
l=i-1; S$]:3
r=j; M@Q=!!tQ(
do{ nvD"_.K rJ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &+`l
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SortUtil.swap(data,l,r); ^g[\.Q
} MvY0?!v
while(l SortUtil.swap(data,l,r); uYL6g:]+ZC
SortUtil.swap(data,l,j); *D<S \6=
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if((l-i)>THRESHOLD){ (W+9 u0Zq
stack[++top]=i; `ea$`2
stack[++top]=l-1; !U>"H8}dv
} 1s\10 hK1c
if((j-l)>THRESHOLD){ /db?ltb
stack[++top]=l+1; ~1Tz[\H#R
stack[++top]=j; O)Nt"k7
b
} fokT)nf~^8
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} (Wq9YDD@
file://new InsertSort().sort(data); joDfvY*[
insertSort(data); 6Ep ns s
} =[{Pw8['
/** /BT;Q)(&
* @param data kRiWNEw
*/ }(E6:h;}~
private void insertSort(int[] data) { '! 1ts @
int temp; a\}|ikiE
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e%bERds
} CR934TE+
} w#F+rh3
} |@nvg>mu
e+y< a~N
} 4Bx1L+Cg
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归并排序: 8fM}UZI
@hzQk~Gdi
package org.rut.util.algorithm.support; S$+ v? Y`)
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import org.rut.util.algorithm.SortUtil; 10#!{].#x
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/** ]Jnf.3
* @author treeroot YGWb!|Z$
* @since 2006-2-2 iZMsN*9[
* @version 1.0 #-'}r}1ZT
*/ |B` -chK
public class MergeSort implements SortUtil.Sort{ ]Vb#(2<2
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/* (non-Javadoc) .yTk/x?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sF+0v p
*/ I J4"X#Q/
public void sort(int[] data) { %-A8`lf<
int[] temp=new int[data.length]; 2 )j\Lg_M
mergeSort(data,temp,0,data.length-1); 1.,mNY^UN
} t C 6 c4j
FG#j0#|*
private void mergeSort(int[] data,int[] temp,int l,int r){ c+a f=ac
int mid=(l+r)/2; ]3={o3[:
if(l==r) return ; i"rMP#7
mergeSort(data,temp,l,mid); a|nlmH"l
mergeSort(data,temp,mid+1,r); _9z/>e
for(int i=l;i<=r;i++){ +=k?Dp[
temp=data;
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} 2jhVmK
int i1=l; 0[v :^H
int i2=mid+1; m/eGnv;!
for(int cur=l;cur<=r;cur++){ On'3K+(_
if(i1==mid+1) s=%HT fw
data[cur]=temp[i2++]; fykN\b
else if(i2>r) x *qef_Hu
data[cur]=temp[i1++]; xh-[]Jz(
else if(temp[i1] data[cur]=temp[i1++]; s`#hk^{
else :/~vaCZ
data[cur]=temp[i2++]; *0c
}`|
} _23sIUN c3
} ;*Rajq
NWAF4i&$
} HO@T2t[
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改进后的归并排序: 2#(7,o}Y5
B8_l+dXO
package org.rut.util.algorithm.support; ;~1r{kXxA"
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import org.rut.util.algorithm.SortUtil; ~JZLfw
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/** ZH0f32K
* @author treeroot N!h>fE`
* @since 2006-2-2 N"T8
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* @version 1.0 %x927I>
*/ O]Kb~jkd
public class ImprovedMergeSort implements SortUtil.Sort { }TF<C!]
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private static final int THRESHOLD = 10; 25ayYO%PTc
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Ql}
/* L}21[ N~ky
* (non-Javadoc) &R5M&IwL
* 3?O|X+$p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :mJM=FeJ
*/ $U8ap4EXM
public void sort(int[] data) { gx6&'${=#
int[] temp=new int[data.length]; `+f\Q2]Z
mergeSort(data,temp,0,data.length-1); _yoG<qI
} BphF+'CM
<>e<Xd:77{
private void mergeSort(int[] data, int[] temp, int l, int r) { W@ Z=1y
int i, j, k; X*JD
int mid = (l + r) / 2; Hug{9Hr3.
if (l == r) A N%.LK
return; 2ga}d5lu
if ((mid - l) >= THRESHOLD) RyhR#
mergeSort(data, temp, l, mid); xg^fM@#m
else b@X@5SJFW
insertSort(data, l, mid - l + 1); YpKai3 B
if ((r - mid) > THRESHOLD) \6'A^cE/PX
mergeSort(data, temp, mid + 1, r); ib&qH_r/
else xaS
insertSort(data, mid + 1, r - mid); v'>Yc#VJ
E, v1F!
for (i = l; i <= mid; i++) { l3afuD:
temp = data; xsTxc&0^
} As\5Ze9|
for (j = 1; j <= r - mid; j++) { c:6w >:
temp[r - j + 1] = data[j + mid]; qnS7z%H8
} 3>(`Y
int a = temp[l]; 9@1W= sl
int b = temp[r]; ~>C >LH>8
for (i = l, j = r, k = l; k <= r; k++) { *Qf}4a0
if (a < b) { 7wqwDE
data[k] = temp[i++]; #NE^f2
a = temp; *Vc=]Z2G^
} else { \'EWur"
data[k] = temp[j--]; !K 9(OX2;
b = temp[j]; EK#m?O:>
} yJL"uleRT
} p)jxqg
} AFFLnLA<L
}M7kApb>Y
/** Sy'>JHx
* @param data w7D:0SGD
* @param l 6,)y{/ENC
* @param i C5M-MZaS
*/ KCT8Q!\
private void insertSort(int[] data, int start, int len) { -,;Ep'
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <^\r9Qxl
} \nHlI=!P
} :A'!u r=\
} <S}qcjG
} kW~F*
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堆排序: B1M/5cr.
FSmi.7
package org.rut.util.algorithm.support; @Y,F&8a$
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import org.rut.util.algorithm.SortUtil; aOHCr>po,
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/** N 93E;B
* @author treeroot _tk5?9Ykn
* @since 2006-2-2 vck$@3*
* @version 1.0 )
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*/ zoJ;5a.3B
public class HeapSort implements SortUtil.Sort{ UIl_&|
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/* (non-Javadoc) [:QMnJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (*RybKoaA
*/ l(5-Cr
public void sort(int[] data) { t0>{0 5
MaxHeap h=new MaxHeap(); &~%@QC/
h.init(data); N>R%0m<e
for(int i=0;i h.remove(); ie(7m|.
System.arraycopy(h.queue,1,data,0,data.length); (<l2 ^H
} v'!Ntk
3+-(;>>\
private static class MaxHeap{ Q]wM/7
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void init(int[] data){ nIjQLx
this.queue=new int[data.length+1]; RF J ;hh
for(int i=0;i queue[++size]=data; FZ9<Q
fixUp(size); ^kr)U8
} W/>?1+r.Z
} iy]}1((hR
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private int size=0; !I[n|r "
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private int[] queue; $vBU}~l7
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public int get() { m-8 9nOls
return queue[1]; 6p"c^
} hU
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public void remove() { 9oP{Al
SortUtil.swap(queue,1,size--); *d@Hnu"q
fixDown(1); /[ ? F1Q
} ~vGtNMQg
file://fixdown =%\6}xPEl<
private void fixDown(int k) { EKPTDKut
int j; j7 =3\SO
while ((j = k << 1) <= size) { LJwM M
if (j < size %26amp;%26amp; queue[j] j++; M0SH-0T;Z
if (queue[k]>queue[j]) file://不用交换 pV6HQ:y1
break; 4w( vRe
SortUtil.swap(queue,j,k); Pm^N0L9?q
k = j; @;fE%N
} ~5NGDT#L*
} DOVX$N$3
private void fixUp(int k) { HF: T]n,
while (k > 1) { LUNs|\&
int j = k >> 1; Wi?%)hur
if (queue[j]>queue[k]) DME?kh>7
break; X-1Vp_(,TP
SortUtil.swap(queue,j,k); Z9&D'n)
k = j; c@-K
} Zd U{`>v
} 1Wk
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} g/,Bx!'8p
oqba:y;AR
} B bw1k
SECQVA_y`
SortUtil: 5TneuG[OD
1[BvHOI2
package org.rut.util.algorithm; lK,=`xe
6KCmswvE
import org.rut.util.algorithm.support.BubbleSort; `Kw"XGT
import org.rut.util.algorithm.support.HeapSort; 4E-A@FR
import org.rut.util.algorithm.support.ImprovedMergeSort; p@Y$e Z:O
import org.rut.util.algorithm.support.ImprovedQuickSort; &}0wzcMg
import org.rut.util.algorithm.support.InsertSort; TucAs0-bF
import org.rut.util.algorithm.support.MergeSort; 8Wx@[!
import org.rut.util.algorithm.support.QuickSort; Om2X>/V%C
import org.rut.util.algorithm.support.SelectionSort; .'b3iG&
import org.rut.util.algorithm.support.ShellSort; KVM@//:{
C9U{^
/** +;*(a3Gp
* @author treeroot 18"VB50b}
* @since 2006-2-2 Z'NbHwW}
* @version 1.0 D}/=\J/
*/ Hu9R.[u
public class SortUtil { lF8dRIav
public final static int INSERT = 1; o,Zng4NY
public final static int BUBBLE = 2;
O*03PF^
public final static int SELECTION = 3; ]cqZ!4?_
public final static int SHELL = 4; z|]oM#Gt
public final static int QUICK = 5; !mxh]x<e
public final static int IMPROVED_QUICK = 6; o9LD6$
public final static int MERGE = 7; 1O2h9I$bk
public final static int IMPROVED_MERGE = 8; %DRy&k/T
public final static int HEAP = 9; tnF9Vj[#%_
mvA xx`jc
public static void sort(int[] data) { *:T>~ilF
sort(data, IMPROVED_QUICK); s`iNbW="
} <W51 oO
private static String[] name={ ^q&wITGI
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )fMX!#KP
}; \U*-w:+@
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private static Sort[] impl=new Sort[]{ gQh Ccv
new InsertSort(), reM
new BubbleSort(), cF&h$4-
new SelectionSort(), UW/3{2
new ShellSort(), Ac!&j=ZE
new QuickSort(), Kt90mA
new ImprovedQuickSort(), l?JO8^Nn
new MergeSort(), jqGo-C~
new ImprovedMergeSort(), 0"^oTmQN
new HeapSort() 9U<)_E<y
}; ah/6;,T
Hx2j=Q_dw
public static String toString(int algorithm){ vYSetAdv
return name[algorithm-1]; d0A\#H_&
} \ ~LU 'j
sK 1m9
public static void sort(int[] data, int algorithm) { [B~zoB(
impl[algorithm-1].sort(data); L.0} UXd
} :Q
r7:$S^
P"=UI$HN
public static interface Sort { a4jnu:e
public void sort(int[] data); KBr5bcm4u
} Wt+y-ES
cUZ!;*
public static void swap(int[] data, int i, int j) { loC5o|Wh
int temp = data; 7c29Ua~[
data = data[j]; E7yf[/it
data[j] = temp; f1Yv hvWL
} 1V**QSZ1
} /SCZ&