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。 F\^\,hy
插入排序: N 1ydL
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package org.rut.util.algorithm.support; *5{1.7
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import org.rut.util.algorithm.SortUtil; CY.4 >,
/** iNc!zA4
* @author treeroot Yr>0Qg],
* @since 2006-2-2 b1;h6AeL
* @version 1.0 hM[3l1o{|
*/ q]Kv.x]$R
public class InsertSort implements SortUtil.Sort{ bGkLa/?S
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/* (non-Javadoc) #M4LG; B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5~ZzQG
*/ Ow(aRWUZD_
public void sort(int[] data) { w@Asz9Lq%
int temp; ydA@@C\&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Uf
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} qoZ)"M
} ,.h@tN<C
} yL),G*[p\}
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} mX!*|$bs
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冒泡排序: c,O;B_}M]
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package org.rut.util.algorithm.support; yz,0
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import org.rut.util.algorithm.SortUtil; *Mb'y d/|
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/** :LlZ#V2
* @author treeroot A}}dc:$C
* @since 2006-2-2 6nREuT'k
* @version 1.0 *}T|T%L4)
*/ gf?N(,
public class BubbleSort implements SortUtil.Sort{ i=1crJ:
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/* (non-Javadoc) ec/>LJDX7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 29CzG0?B
*/ K|OPtYeb
public void sort(int[] data) { wX_~H*m?
int temp; ;)wk^W
for(int i=0;i for(int j=data.length-1;j>i;j--){ e ;^}@X
if(data[j] SortUtil.swap(data,j,j-1); @WJ\W `P
} \Rb:t}
} ^do6?e`?-
} pw5{=bD
} k2tSgJW
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} a2ho+TwT
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选择排序: {jH'W)nR
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package org.rut.util.algorithm.support; cD=IFOB*GD
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import org.rut.util.algorithm.SortUtil; z@w}+fYO
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/** La3rX
* @author treeroot k{=dV
* @since 2006-2-2 3~V.
* @version 1.0 4=EA3`l
*/ 2Q\\l @b\
public class SelectionSort implements SortUtil.Sort { 8qaU[u&$
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/* -(>Ch>O
* (non-Javadoc) FvYciU!
* as('ZD.9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L &hw-.Q
*/ W amOg0
public void sort(int[] data) { )B)f`(SA"<
int temp; Jp%5qBS^
for (int i = 0; i < data.length; i++) { F3]VSI6^E,
int lowIndex = i; Lq1?Y
for (int j = data.length - 1; j > i; j--) { MB $aN':
if (data[j] < data[lowIndex]) { <VQ)}HW;k
lowIndex = j; k`A39ln7wu
} Sk1t~
} f8aY6o"i
SortUtil.swap(data,i,lowIndex); eG8l^[
} eV/oY1B]<
} Dte5g),R
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} )J0h\ky
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Shell排序: DW78SoyedZ
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package org.rut.util.algorithm.support; nxx/26{
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import org.rut.util.algorithm.SortUtil; Dg"szJ-
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/** yN0`JI
* @author treeroot ^Y+Lf]zz*
* @since 2006-2-2 b GI){0A
* @version 1.0 kP^A~ZO.
*/ Crg'AB?
public class ShellSort implements SortUtil.Sort{ JAP(J~
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/* (non-Javadoc) CaO-aL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZTz07Jt
*/ |FM*1Q[1
public void sort(int[] data) { m4m|?
for(int i=data.length/2;i>2;i/=2){ %>_6&A{K,d
for(int j=0;j insertSort(data,j,i); %=Z/Frd
} Ie(.T2K
} o kA<
insertSort(data,0,1); %D8.uGsh
} I[v`)T'_{
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/** a!-J=\>9
* @param data 0Ci/-3HV!
* @param j {>9ED.t
* @param i |3yG
*/ 3
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private void insertSort(int[] data, int start, int inc) { H,5]w\R6\
int temp; Cl9 nmyf
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ..+#~3es#y
} 6hv.;n};
} Bf;_~1+vLG
} y%;o
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} ujSoWs
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快速排序: _8
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package org.rut.util.algorithm.support; geqP. MR
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import org.rut.util.algorithm.SortUtil; 3Cc#{X-+
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/** -~lq <M
* @author treeroot xk%
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* @since 2006-2-2 z'& fEsjy
* @version 1.0 {vCtp
*/ 1^X)vck
public class QuickSort implements SortUtil.Sort{ _"L6mcI6
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/* (non-Javadoc) $P?^GB>u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2M'dTXz
*/ $*iovam>^]
public void sort(int[] data) { *wj5( B<y
quickSort(data,0,data.length-1); A$5M.
}
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private void quickSort(int[] data,int i,int j){
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int pivotIndex=(i+j)/2; ~"#HHaBO#
file://swap L*[3rqER
SortUtil.swap(data,pivotIndex,j); ;tZQ9#S
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int k=partition(data,i-1,j,data[j]); PC<_1!M]
SortUtil.swap(data,k,j); wN4#j}C
if((k-i)>1) quickSort(data,i,k-1); ]lBCK
if((j-k)>1) quickSort(data,k+1,j); C`ky=
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|7
} -|KZOea
/** 6X%g-aTs
* @param data )3:0TFS}}k
* @param i ]kTxVe
* @param j 3dj|jw5
* @return +jwHYfAK)
*/ H4AT>}ri
private int partition(int[] data, int l, int r,int pivot) { tLa%8@;'$
do{ VDbbA\
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `>)Ge](oN
SortUtil.swap(data,l,r); R=LiB+p
} ChG7>4:\
while(l SortUtil.swap(data,l,r); -HQbvXAS
return l; jxkjPf?
} s{yw1:
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} bC1G5`v_D
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改进后的快速排序: Gw$ 5<%sB
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package org.rut.util.algorithm.support; #Ir?v
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import org.rut.util.algorithm.SortUtil; R8Vf6]s_
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/** /~ {`!30
* @author treeroot Rt+ -ud{O
* @since 2006-2-2 U\tx{CsSz
* @version 1.0 l9&k!kF`
*/ {XmCG%%L
public class ImprovedQuickSort implements SortUtil.Sort { , i5 _4
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private static int MAX_STACK_SIZE=4096; ebQgk
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private static int THRESHOLD=10; :1>?:3,`
/* (non-Javadoc) W
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZDW=>}~_y
*/ ;x/eb g
public void sort(int[] data) { lnyfAq}w
int[] stack=new int[MAX_STACK_SIZE]; ()?83Xj[c
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int top=-1; J4"Fj, FS
int pivot; fyb;*hgu
int pivotIndex,l,r; lt&(S)
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stack[++top]=0; \xCCJWek
stack[++top]=data.length-1; h&$h<zL[
CC`_e^~y=F
while(top>0){ R;c9)>8L
int j=stack[top--]; kygw}|, N
int i=stack[top--]; P U/<7P*
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pivotIndex=(i+j)/2; 7*{f*({
pivot=data[pivotIndex]; QH9t |l
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SortUtil.swap(data,pivotIndex,j); hcj}6NXc
tO3R&"{
file://partition S-7&$n
l=i-1; 5?^L))
r=j; D![v{0 er
do{ r@{TN6U
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2+
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SortUtil.swap(data,l,r); P.,U>m
} 6p)AQTh>
while(l SortUtil.swap(data,l,r); @a?7D;+<
SortUtil.swap(data,l,j); 5dj@N3ZX7;
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if((l-i)>THRESHOLD){ 1*TbgxS~W
stack[++top]=i; WK>|IgK
stack[++top]=l-1; L>h8>JvQ
} pi?MAE*f
if((j-l)>THRESHOLD){ GT&}Burl/n
stack[++top]=l+1; 7~mhWPzMwB
stack[++top]=j; EJ9hgE
} a4__1N^Qj
j )6
} S=(O6+U
file://new InsertSort().sort(data); o[Jzx2A<
insertSort(data); (?na|yd
} 20|`jxp
/** @i1e0;\
* @param data &Vz$0{d5
*/ "%gsGtS
private void insertSort(int[] data) { tNi>TkC}`
int temp; `x9Eo4(/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !wfW0?eu
} <h7cQ
} ,RV
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} YB5"i9T2
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} _s=H|#l
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归并排序: _qxI9Q}<"
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package org.rut.util.algorithm.support; 5 8bW
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import org.rut.util.algorithm.SortUtil; ,yYcjs!=o
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/** (jM0YtrD
* @author treeroot r!mRUw'u
* @since 2006-2-2 ?l0Qi
* @version 1.0 lir=0oq<
*/ T }}2J/sj
public class MergeSort implements SortUtil.Sort{ F)LbH&Kn
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/* (non-Javadoc) dI{DiPho
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a[-!X7,IU
*/ Q5+1'mzAB
public void sort(int[] data) { 'dLw8&T+W
int[] temp=new int[data.length]; J?QS7#!%
mergeSort(data,temp,0,data.length-1); -b(DPte
} `@/)S^jBau
t~) P1Lof\
private void mergeSort(int[] data,int[] temp,int l,int r){ o}OY,P
int mid=(l+r)/2; o$rjGa l
if(l==r) return ; |1U_5w
mergeSort(data,temp,l,mid); ysW})#7X
mergeSort(data,temp,mid+1,r); &]nx^C8V;
for(int i=l;i<=r;i++){ %;,fI'M
temp=data; h Jb2y`,q
} ]:|B).
int i1=l; Lgg,K//g
int i2=mid+1;
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for(int cur=l;cur<=r;cur++){ 'a['lF
if(i1==mid+1) 8D='N`cN+
data[cur]=temp[i2++]; Jj"{C]
else if(i2>r) k6(7G@@}
data[cur]=temp[i1++];
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else if(temp[i1] data[cur]=temp[i1++]; :
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else ,QY$:f<
data[cur]=temp[i2++]; +1ICX
} 1qRquY
} @rTB&>`
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} =RQF::[h
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改进后的归并排序: |kYlh5/c d
] G&*HMtp
package org.rut.util.algorithm.support; b(iF0U>&
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import org.rut.util.algorithm.SortUtil; p)y5[HX
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/** [FO4x`
* @author treeroot c|&3e84U
* @since 2006-2-2 -50DGA,K6
* @version 1.0 Hr|f(9xA
*/ -*C
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public class ImprovedMergeSort implements SortUtil.Sort { IOy0WHl|
D}_.D=)
private static final int THRESHOLD = 10; Nd~B$venh
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/* 1/.BP
* (non-Javadoc) *]$B 9zVs!
* U\KMeaF5e-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {213/@,
*/ NAGM3{\5v$
public void sort(int[] data) { U"PcNQy
int[] temp=new int[data.length]; (2g
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mergeSort(data,temp,0,data.length-1); ;8s L
} f9.?+.^_
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private void mergeSort(int[] data, int[] temp, int l, int r) { FlqGexY5
int i, j, k; k9Pvh,_wp
int mid = (l + r) / 2; hbw(o
if (l == r) 5 ~Wg=u<6
return; rq+_[!
if ((mid - l) >= THRESHOLD) xe@1H\7:
mergeSort(data, temp, l, mid); y>I2}P
else l5[5Y6c>
insertSort(data, l, mid - l + 1); "r9Rr_,
>
if ((r - mid) > THRESHOLD) w'S,{GW
mergeSort(data, temp, mid + 1, r); ;J%:DD
else $R9D
L^iD
insertSort(data, mid + 1, r - mid);
gjS|3ED
WR;1
for (i = l; i <= mid; i++) { HK;NR.D
temp = data; +jm,nM9
} \TQZZ_Z
for (j = 1; j <= r - mid; j++) { @- U\!Tf
temp[r - j + 1] = data[j + mid]; $%bSRvA
} l/.{F ;3F
int a = temp[l]; EL 5+pt
int b = temp[r]; J<$@X JLS
for (i = l, j = r, k = l; k <= r; k++) { ARH~dN* C
if (a < b) { w0Qtr>"
data[k] = temp[i++]; ,;k+n)
a = temp; O'<V[Y}6
} else { O)'CU1vMb
data[k] = temp[j--]; A_xC@$1e<
b = temp[j]; #N|\7(#~u
} 'p@f5[t
} slQn
} c_J9CKqc
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/** 0=Z[6Q@:
* @param data rB>ge]$.
* @param l >!963>D R
* @param i &> sbsx\y
*/ As:O|!F
private void insertSort(int[] data, int start, int len) { *dl hRa
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8&<mg;H,
} jK|n^5\
} e4z`:%vy
} Q6h+.
} <kh.fu@.Q
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堆排序: [Vd$FDki
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package org.rut.util.algorithm.support; {}O~tf_
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import org.rut.util.algorithm.SortUtil; ZpTDM1ro
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/** ':*H#}Br-#
* @author treeroot E C#0-,z
* @since 2006-2-2 d"wA"*8~y
* @version 1.0 T{{:p\<]_
*/ 6= iHw24
public class HeapSort implements SortUtil.Sort{ .u-a+ac<
f ,F X# _4
/* (non-Javadoc) Kk3+ ]W<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p3s i\Fm!
*/ V9c.(QY|f
public void sort(int[] data) { 55S s%$k@
MaxHeap h=new MaxHeap(); `TrWtSwv
h.init(data); 9LR=>@Z
for(int i=0;i h.remove(); i]8O?Ab>?
System.arraycopy(h.queue,1,data,0,data.length); zakhJ
} 2W AeSUX
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private static class MaxHeap{ ,9&cIUH
!_fDL6a-
void init(int[] data){ ?UnQ?F(+G<
this.queue=new int[data.length+1]; Jf YgZ\#
for(int i=0;i queue[++size]=data; Kz HYh
fixUp(size); lC<;Q*Y
} 'zyw-1
} }(EH5jZ'
e3I""D{)[=
private int size=0; /jv/qk3i
J8ni}\f
private int[] queue; 4cjfn'x
P9v(5Z00|d
public int get() { F};R
return queue[1]; ;ALWL~Xm
} #QNN;&L]R
AA\a#\#Z3
public void remove() { 'l*X?ccKy
SortUtil.swap(queue,1,size--); dGKo!;7{
fixDown(1); n0(Q/
} f%G\'q]#F
file://fixdown '|8dt "C
private void fixDown(int k) { jn(x-fj6R
int j; c1YDln
while ((j = k << 1) <= size) { uwwR$
(\7
if (j < size %26amp;%26amp; queue[j] j++; [F-R*}&x
if (queue[k]>queue[j]) file://不用交换 = oAS(7o
break; `YhGd?uu$
SortUtil.swap(queue,j,k); zv]ZEWVzc
k = j; A3]A5s6
} qTsy'y;Z
} f$I=oN
private void fixUp(int k) { {
I#>6
while (k > 1) { +kSu{Tc
int j = k >> 1; (_FU3ZW!
if (queue[j]>queue[k]) Be6Yh~m
break; mU5Ox4>&9
SortUtil.swap(queue,j,k); t. P@Ba^
k = j; gInh+XZs
} p-4$)w~6i
} mixsJ}e
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} *X0>Ru[
HTQZIm
} -WC0W
l=?e0d>O
SortUtil: (< +A w7
(Pc>D';{S
package org.rut.util.algorithm; Fh #QS'[
7l *
&Fh9;
import org.rut.util.algorithm.support.BubbleSort; TgiZ
% G
import org.rut.util.algorithm.support.HeapSort; 2<D| {
import org.rut.util.algorithm.support.ImprovedMergeSort; X^\D"fmE.
import org.rut.util.algorithm.support.ImprovedQuickSort; P6+ B!pY
import org.rut.util.algorithm.support.InsertSort; nI:M!j5s`
import org.rut.util.algorithm.support.MergeSort; 5(>=};r+
import org.rut.util.algorithm.support.QuickSort; ">}6i9o
import org.rut.util.algorithm.support.SelectionSort; s9Hxiw@D
import org.rut.util.algorithm.support.ShellSort; -^_2{i
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/** B;k'J:-"
* @author treeroot sfF ~k-
* @since 2006-2-2 ibkB>n{(
* @version 1.0 U,g8:M
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*/ 1 Pk+zBJ$
public class SortUtil { ~P3b5 -
public final static int INSERT = 1; A`7(i'i5]
public final static int BUBBLE = 2; hRf
l\Q[
public final static int SELECTION = 3; u/=hueR<^
public final static int SHELL = 4; g p:0 Y
public final static int QUICK = 5; o=rR^Z$G
public final static int IMPROVED_QUICK = 6; OZ&/&?!XE
public final static int MERGE = 7; ~$J;yo~
public final static int IMPROVED_MERGE = 8; u8-6s+
O
public final static int HEAP = 9; c
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gUklP(T=u
public static void sort(int[] data) { K(;qd Ir
sort(data, IMPROVED_QUICK); pGs?Y81
} [)"\Aq
private static String[] name={ 4*X Nk;Dx
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E'x"EN
}; M9iX_4
#,#`<h!
private static Sort[] impl=new Sort[]{ SBxpJsW>
new InsertSort(), #pvq9fss,}
new BubbleSort(), #/oH #/?
new SelectionSort(), +ktv:d
new ShellSort(), #W~jQ5NS\
new QuickSort(), sOhn@*X
new ImprovedQuickSort(), Qs1CK;+zU
new MergeSort(), p:08q
B|uQ
new ImprovedMergeSort(), Fm`*j/rq
new HeapSort() \F|)w|v
}; Skr(C5T
]IV{;{E)
public static String toString(int algorithm){ $hm[x$$
return name[algorithm-1]; QuR}6C
} cL9gaD$;)
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public static void sort(int[] data, int algorithm) { H_&to3b(
impl[algorithm-1].sort(data); MG?,,8s O
} m)A:w.o
;@Zuet
public static interface Sort { <$s6?6P
public void sort(int[] data); ,p|Q/M^
} yrxX[Hg?@
Lm[,^k
public static void swap(int[] data, int i, int j) { uE1;@Dm+
int temp = data; )+N{D=YM
data = data[j]; o;@~uU
data[j] = temp; L3b0e_8>R
} (OiV IH
} }u8(7