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。 3
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插入排序: C94UF7al
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package org.rut.util.algorithm.support; vB YT)S
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import org.rut.util.algorithm.SortUtil; v4>"p!_C
/** x^O2Lj,w\
* @author treeroot +l?ro[#6&.
* @since 2006-2-2 73z|'0.
* @version 1.0 aq,)6P`
*/ |m 5;M$M)
public class InsertSort implements SortUtil.Sort{ $E,DxDT
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/* (non-Javadoc) :0j`yo:w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) //5_E7Ehu$
*/ <&0*5|rR
public void sort(int[] data) { Q%VR@[`\
int temp; P "_}F
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L%O8vn^3
} ~W *j^+T"
} O9=H
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} p,u<gJUL
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} c)!s[o L
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冒泡排序: fQ.>G+0I>
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package org.rut.util.algorithm.support; "gikX/Co=
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import org.rut.util.algorithm.SortUtil; lvJ{=~u
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/** 3pv1L~ ZI
* @author treeroot L8tLW09
* @since 2006-2-2 ^RAFmM#F
* @version 1.0
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*/ t{s*3k/
public class BubbleSort implements SortUtil.Sort{ UG'U
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/* (non-Javadoc) <IDzv'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0:+uw`
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*/ kBT}Siw
public void sort(int[] data) { ,Y8X"~{A
int temp; h5JwB<8
for(int i=0;i for(int j=data.length-1;j>i;j--){ r4ttEJ-jG
if(data[j] SortUtil.swap(data,j,j-1); zomNjy*
} 'CO[s.03
} u\geD
} \J:T]
} *=9#tYn~
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} /P"\+Qp
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选择排序: khIa9Nm
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package org.rut.util.algorithm.support; >@Vr'kg+V
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import org.rut.util.algorithm.SortUtil; Jo$Dxa
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/** 6%INNIyAWa
* @author treeroot Hf{%N'4
* @since 2006-2-2 ^|{fB,B
* @version 1.0 DMN H?6
*/ (#iM0{
public class SelectionSort implements SortUtil.Sort { \\Tp40m+
*`.{K12T
/*
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* (non-Javadoc) >b?)WNk
* z ;Nk& <?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R./ 6Q1
*/ {1DYXKe
public void sort(int[] data) { jF_I4H
int temp; ",V5*1w
for (int i = 0; i < data.length; i++) { &E`Z_}~
int lowIndex = i; "$pgmf2
for (int j = data.length - 1; j > i; j--) { U?j> 28
if (data[j] < data[lowIndex]) { PSR`8z n
lowIndex = j; Y(Ezw !a
} ~'.yhPog
} Fh$&puF2
SortUtil.swap(data,i,lowIndex); 9?$!=4
} RAbq_^Q
} %<|KJb4?
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} HWOH8q{f!
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Shell排序: N4jLbnA
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package org.rut.util.algorithm.support; T@Z{KV"S
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import org.rut.util.algorithm.SortUtil; -Ep6.v
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/** Z x%@wH~
* @author treeroot fr2w k}/b
* @since 2006-2-2 RcP5].^T
* @version 1.0 iZ\z!tH R
*/ -JK4-Hg
public class ShellSort implements SortUtil.Sort{ d( g_y m*
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/* (non-Javadoc) r!,V_a4n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f.^w/ GJO/
*/ ScoHtX3
public void sort(int[] data) { oz@6%3+
for(int i=data.length/2;i>2;i/=2){ 7!nAWlQ&-E
for(int j=0;j insertSort(data,j,i); gjLgeyyWC
} XO~^*[K
} ++"PPbOe&D
insertSort(data,0,1); K({,]<l5
} $Xc<K_Z
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/** 4:g:$s|SE[
* @param data }8#Czo jt
* @param j w/6@R 4)p
* @param i hAyPaS #
*/ lIP<`6=4
private void insertSort(int[] data, int start, int inc) { IuW10}"9
int temp; (SA*9%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L]<4{8H.
} TJ:Lz]l >
} {hR2NUm
} lXKZNCL
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} SH|$Dg
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快速排序: kq0m^`
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package org.rut.util.algorithm.support; !;Nh7vG
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import org.rut.util.algorithm.SortUtil; 'Sh5W%NM
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/** 1tpD|
* @author treeroot [Cp{i<C
* @since 2006-2-2 y8z%s/gRh
* @version 1.0 &}1)]6q$
*/ ,$-PC=Ti(
public class QuickSort implements SortUtil.Sort{ K_n%`5
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/* (non-Javadoc) =C)1NJx&~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4/>={4Y9
*/ EdpR| z
public void sort(int[] data) { nVzo=+Yp
quickSort(data,0,data.length-1); PM7/fv*,
} 9 To6Rc;
private void quickSort(int[] data,int i,int j){ "QS7?=>*F
int pivotIndex=(i+j)/2; ||aU>Wj4
file://swap >,3
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SortUtil.swap(data,pivotIndex,j); xK3;/!\`
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int k=partition(data,i-1,j,data[j]); }DaYO\:yK*
SortUtil.swap(data,k,j); kM`#U
*j
if((k-i)>1) quickSort(data,i,k-1); 9l]IE,u
if((j-k)>1) quickSort(data,k+1,j); 3(5Y-.aK}^
9<S-b |!@
} D9en
/** h[T3WE
* @param data e
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* @param i T`sM4 VWqU
* @param j 9MxGyGz$
* @return hgGcUpJy?
*/ mGvP9E"&
private int partition(int[] data, int l, int r,int pivot) { 4>* `26
do{ Vk-_H)*r
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?f..N,s
SortUtil.swap(data,l,r); 7ZZt|bl
} PAkW[;GSDh
while(l SortUtil.swap(data,l,r); 7I|Mq
return l; +F|[9o z
} 9OUhV[D
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} 4NV1v&"
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改进后的快速排序: )A%Y
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package org.rut.util.algorithm.support; ~55>uw<
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import org.rut.util.algorithm.SortUtil; e-mlvi^-
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/** 1~Nz6
* @author treeroot ~\P.gSiz
* @since 2006-2-2 1 <+^$QL
* @version 1.0 mLE`IKgd]
*/ ] ?(=rm9u
public class ImprovedQuickSort implements SortUtil.Sort { }g?]B +0
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private static int MAX_STACK_SIZE=4096; . {I7sUQ
private static int THRESHOLD=10; nj
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/* (non-Javadoc) 7Y/_/t~Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qM+T Wp
*/ 8@-US ,|
public void sort(int[] data) { A7H=#L+C
int[] stack=new int[MAX_STACK_SIZE]; R9(^CWs
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int top=-1; *?{)i~
int pivot; 5 *_#"
int pivotIndex,l,r; /l
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stack[++top]=0; T[~X~dqwn"
stack[++top]=data.length-1; [z\*Zg
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while(top>0){ lV8Mr6m
int j=stack[top--]; N5^:2ag
int i=stack[top--]; J3=jC5=J4
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pivotIndex=(i+j)/2; +dfSCs
pivot=data[pivotIndex]; sC>8[Jatd
2 E^P=jU`
SortUtil.swap(data,pivotIndex,j); lgl/|
^ Uw
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file://partition r_G`#Z_5F
l=i-1; !SnpesTn
r=j; 8Ex0[e
do{ F~EriO
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); k.%F!sK
SortUtil.swap(data,l,r); m`Z4#_s2
} 8Xr"4;}f+
while(l SortUtil.swap(data,l,r); C}CX n X
SortUtil.swap(data,l,j); R##O9BSI8Z
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if((l-i)>THRESHOLD){ HM/ qB^
stack[++top]=i; ;\h'A(
stack[++top]=l-1; kDsUKO
p
} #]rw@c
if((j-l)>THRESHOLD){ Ab`G b
stack[++top]=l+1; #ed]zI9O
stack[++top]=j; 6*$N@>8&
} _wIAr
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} ^#+9v
file://new InsertSort().sort(data); /=%4gWtr
insertSort(data); >|<6s],v
} J{H475GqiT
/** }U9e#>ex
* @param data a`}-^;}SW
*/ !T}`h'
private void insertSort(int[] data) { 7r>^_ aW
int temp; Ex<loVIrP$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I8m(p+Z=
}
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} |$Td-M^)
} CXa$QSu >
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} 6 `'^$wKs
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归并排序: [X|P(&\hQd
@uc%]V<:k
package org.rut.util.algorithm.support; m|!sY[!
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import org.rut.util.algorithm.SortUtil; TWy1)30x
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/** N3,EF1%
* @author treeroot l!
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* @since 2006-2-2 &kP>qTI^p~
* @version 1.0
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*/ Q,>AT$|
public class MergeSort implements SortUtil.Sort{ mWZVO,t$
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/* (non-Javadoc) 7JbN WN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #VLTx!5o
*/ 'SC`->F4D
public void sort(int[] data) { #]9yzyb_y
int[] temp=new int[data.length]; cng1k
mergeSort(data,temp,0,data.length-1); ST{<G
} \eN }V
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private void mergeSort(int[] data,int[] temp,int l,int r){ .69{GM?
int mid=(l+r)/2; &`@K/Nf$9
if(l==r) return ; U@H SU%H
mergeSort(data,temp,l,mid); Q.x3_+CX
mergeSort(data,temp,mid+1,r); x,n;GR
for(int i=l;i<=r;i++){ 8ED6C"6
temp=data; wuPx6hCl
} \5Hfe;ny-~
int i1=l; 'Ic$p>
int i2=mid+1; @hk~8y]rz
for(int cur=l;cur<=r;cur++){ 6b@:La
if(i1==mid+1) !y6
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data[cur]=temp[i2++]; Rt+s\MC^r
else if(i2>r) <=WQs2
data[cur]=temp[i1++]; )AnX[:y
else if(temp[i1] data[cur]=temp[i1++]; F*QGzbv)
else zH.7!jeE
data[cur]=temp[i2++]; 0 j6/H?OT
} ^X^4R1V)
} X[R/j*K
nP] ~8ViS
} vFQ'sd]C
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改进后的归并排序: E;k'bz
9%|!+!j
package org.rut.util.algorithm.support; .QW89e,O3
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import org.rut.util.algorithm.SortUtil; fF;-d2mF
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/** ;asB@Q
* @author treeroot >=wlS\:"
* @since 2006-2-2 NT:p6(s^
* @version 1.0 /aP`|&G,)
*/ 66v6do7
public class ImprovedMergeSort implements SortUtil.Sort { |[8&5[);
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private static final int THRESHOLD = 10; h60*=+vdJ
q* +}wP
/* p"w"/[8
* (non-Javadoc) Ye T[KjX
* phd,Jg[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5EM(3eY ^q
*/ s~,Y po?
public void sort(int[] data) { K%.\@l2Cp
int[] temp=new int[data.length]; ]JbGP{UiN
mergeSort(data,temp,0,data.length-1); 9%pq+?u9
} c5pF?kFaD
}Dm-Ibdg(
private void mergeSort(int[] data, int[] temp, int l, int r) { aH*)W'N?
int i, j, k; $0
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int mid = (l + r) / 2; 3V2"1Ic
if (l == r) ^As^hY^p
return; >HXT:0
if ((mid - l) >= THRESHOLD) V |)3l7IC<
mergeSort(data, temp, l, mid); k68\ _ NUL
else |X0h-kX4
insertSort(data, l, mid - l + 1); -m3O\X
if ((r - mid) > THRESHOLD) xh,};TS(K
mergeSort(data, temp, mid + 1, r); hvkLcpE
else `;L>[\Xi
insertSort(data, mid + 1, r - mid); 7']n_-fu
> X<pzD3u
for (i = l; i <= mid; i++) { rLtB^?A z
temp = data; ?Mtd3F^o?
} OW;]=k/(
for (j = 1; j <= r - mid; j++) { oSq4g{xvMH
temp[r - j + 1] = data[j + mid]; . _Bejh
} [LbUlNq^B@
int a = temp[l]; !`JaYUL[e
int b = temp[r]; FWNWOU
for (i = l, j = r, k = l; k <= r; k++) { u1R_u9
if (a < b) { ],V_"\ATD
data[k] = temp[i++]; >{C=\F#*L
a = temp; rOHU)2
} else { J'jwRn
data[k] = temp[j--]; BIqZg$
b = temp[j]; @9Rgg9r
} R7pdwKD
} `fYICp
} -{n2^vvF
ge
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/** /}t>o*
x
* @param data p~Di\AQ/
* @param l j51Wod<[
* @param i `lygJI?H+{
*/ *:L-/Q)i
private void insertSort(int[] data, int start, int len) { Q]?r&%Y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;6P#V`u
} =:Ahg
9
} N8S!&*m
} 9.)*z-f$
} Z]OXitt7
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堆排序: QhR.8iS
I6@98w}"
package org.rut.util.algorithm.support; ;;;aM:6\
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import org.rut.util.algorithm.SortUtil; lV924mh
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/** )lh48Ag0t;
* @author treeroot iYJ: P
* @since 2006-2-2 <?yf<G'$
* @version 1.0 dp;;20z
*/ IsP-[0it
public class HeapSort implements SortUtil.Sort{ J8IdQ:4^l
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/* (non-Javadoc) |[qq
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z1Y/2MVSb
*/ !'scOWWn
public void sort(int[] data) { ?'SHt9b3|
MaxHeap h=new MaxHeap(); NX.%Rj*
h.init(data); [Ume^
for(int i=0;i h.remove(); tjLp;%6e
System.arraycopy(h.queue,1,data,0,data.length); \A
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} " ,k(*
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$gg
private static class MaxHeap{ B6qM0QW
dAg<BK/
void init(int[] data){ o\<m99Ub
this.queue=new int[data.length+1]; *WTmS2?'h
for(int i=0;i queue[++size]=data; *XN|ZGl/
fixUp(size); [=/Yo1:v
} LelCjC{`1
} b~$B0o)
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private int size=0; 0
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private int[] queue; gbf2ty
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public int get() { Z!#n55|
return queue[1]; zt,Tda4Y
} %*:X
FB
tFj[>_d7
public void remove() { (p6$Vgdt
SortUtil.swap(queue,1,size--); [k<"@[8)
fixDown(1); MC\rx=cR\
} m 0jm$>:Z
file://fixdown Jr2x`^aNO
private void fixDown(int k) { +`jI z'+
int j; |aWeo.;c
while ((j = k << 1) <= size) { *aem5E`c
if (j < size %26amp;%26amp; queue[j] j++; skSs|slp
if (queue[k]>queue[j]) file://不用交换 Dqxtc|vo
break; }253Q!f
SortUtil.swap(queue,j,k); hKx*V"7/#\
k = j; SK][UxoHm
} Wb)>APL
} yLFZo"r
private void fixUp(int k) { ^jph"a C
while (k > 1) { 0;J#".(KQ
int j = k >> 1; 8VWkUsOoI
if (queue[j]>queue[k]) "K Or)QD/
break; A5WchS'
SortUtil.swap(queue,j,k); 3P}^Wu
k = j; 5Yxs_t4
} &PE/\_xD_
} NI<;L m
JyiP3whW
} W'98ues%
|$>ZGs#
} GF^)](xY+
E`A6GX
SortUtil: =P}BAJ
n PAl8
package org.rut.util.algorithm; ?@@BIg-
EdC^L`::
import org.rut.util.algorithm.support.BubbleSort; Jm#mC
import org.rut.util.algorithm.support.HeapSort; }Cs.Hm0P
import org.rut.util.algorithm.support.ImprovedMergeSort; r}>q*yx:
import org.rut.util.algorithm.support.ImprovedQuickSort; b '9L}q2m
import org.rut.util.algorithm.support.InsertSort; 9e aqq
import org.rut.util.algorithm.support.MergeSort; n "J+?~9
import org.rut.util.algorithm.support.QuickSort; !EwL"4pPw
import org.rut.util.algorithm.support.SelectionSort; :Qc[>:N
import org.rut.util.algorithm.support.ShellSort; @3aI7U/I
NP+*L|-;
/** C<G`wXlP|
* @author treeroot O,D/&0
* @since 2006-2-2 \c1NIuJR
* @version 1.0 178u4$# b
*/ :6T8\W
public class SortUtil { AcoU.tpP
public final static int INSERT = 1; iHYvH
public final static int BUBBLE = 2; RX"~m!26
public final static int SELECTION = 3; <w1#3Mu'
public final static int SHELL = 4; SWq5=h
public final static int QUICK = 5; s.uw,x
public final static int IMPROVED_QUICK = 6; 0b3z(x!O
public final static int MERGE = 7; 7,v}Ap]Pa
public final static int IMPROVED_MERGE = 8; e5z U`R
public final static int HEAP = 9; B*
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q@@C|oqEX
public static void sort(int[] data) { P}2waJe
sort(data, IMPROVED_QUICK); PV(TDb:0
} q@+#CUa&n
private static String[] name={ $~G=Hcl9
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _yH=w'8.
}; +k?0C?/T;
_+0QQ{'N
private static Sort[] impl=new Sort[]{ kv8
/UW
new InsertSort(), MJ%gF=$X
new BubbleSort(), {>]7xTpwZ
new SelectionSort(), "d3qUk
new ShellSort(), /4xp?Lo:
new QuickSort(), BKJwM'~
new ImprovedQuickSort(), %~{G*%:
new MergeSort(), %=PGvu
new ImprovedMergeSort(), f8AgTw,K8
new HeapSort() 4k6,pt"
}; =X24C'!Mpe
cs\/6gSCo
public static String toString(int algorithm){ FV];od&c
return name[algorithm-1]; FCp\w1+
} wJ}9(>id*
No(p:Snbo
public static void sort(int[] data, int algorithm) { q33Z.3R
impl[algorithm-1].sort(data); $Y3mO~
} #ouE,<
Pkq?tm$#
public static interface Sort { ,x]xtg?
public void sort(int[] data); wMx#dP4W8
} oBpoZ @[Z
I `I+7~t
public static void swap(int[] data, int i, int j) { $TK<~3`
int temp = data; +#wh`9[wBt
data = data[j]; $p?TE8G
data[j] = temp; C%LXGMt
} p2)563#RS
} pIbm)-