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。 6v>z h
插入排序: 8^vArS;
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package org.rut.util.algorithm.support; U0IE1_R
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import org.rut.util.algorithm.SortUtil; .Q[yD<)Ubs
/** no|Gq>Xp
* @author treeroot q% EC
* @since 2006-2-2 m8AAp1=
* @version 1.0 3I*uV!notJ
*/ ._,trb>o
public class InsertSort implements SortUtil.Sort{ mf2Mx=oy
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/* (non-Javadoc) U&Ab#m;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HsH<m j
*/ 5~s{N
public void sort(int[] data) { 7Ud'd<
int temp; u>o<tw%Y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #HG&[Ywi
} Pb4q`!
} QiU_hz6?v
} =YHt9fb$c
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} |D<+X^0'
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冒泡排序: 5~U:@Tp
p8>R#9
package org.rut.util.algorithm.support; 7m]t^^
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import org.rut.util.algorithm.SortUtil; fYn{QS?
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/** Pgev) rh[
* @author treeroot l5HWZs^
* @since 2006-2-2 oLP]N$'#
* @version 1.0 n ,1tD
*/ 1J'pB;.]s
public class BubbleSort implements SortUtil.Sort{ $',3Pv
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/* (non-Javadoc) ^6qjSfFW}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cAibB&`~
*/ G4m4k
public void sort(int[] data) { 6l[G1KkV
int temp; Y%h}U<y
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5m`[MBt2g
if(data[j] SortUtil.swap(data,j,j-1); eJ:Yj
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} pns+y
} !;+U_j'Pg
} ] R<FKJ[
} Aqu]9M~
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} ^]7,1dH}M
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选择排序: v~`*(Hh
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package org.rut.util.algorithm.support; avy=0Jmj
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import org.rut.util.algorithm.SortUtil; _25d%Ne0
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/** > [8#hSk
* @author treeroot niQcvnT4b
* @since 2006-2-2 /.2 qWQH
* @version 1.0 _ .!aBy%xf
*/ /sV?JV[t
public class SelectionSort implements SortUtil.Sort { 6W:1>,xS
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/* U$%|0@`~
* (non-Javadoc) jiq2 x\\!
* 3t*# !^$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h(|;\ ~
*/ =+4 _j
public void sort(int[] data) { "4RQ`.SR
int temp; p>&S7M/9
for (int i = 0; i < data.length; i++) { b@!:=_Mr
int lowIndex = i; F: ,#?
for (int j = data.length - 1; j > i; j--) { KDBY9`08
if (data[j] < data[lowIndex]) { N2% :h;tf
lowIndex = j; ZBC@xM&-
} /vy?L\`)#
} vU{jda$$#
SortUtil.swap(data,i,lowIndex); d
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} z
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} POY=zUQ'/
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} :cb[M5c
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Shell排序: .c03}RTC^
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package org.rut.util.algorithm.support; ;!:F#gahv
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import org.rut.util.algorithm.SortUtil; `[&v
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/** rCkYfTYI
* @author treeroot RpjSTV8Tkm
* @since 2006-2-2 $CM4&{B"i
* @version 1.0 }pt-q[s>
*/ $=lJG(2%
public class ShellSort implements SortUtil.Sort{ gn364U a
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/* (non-Javadoc) C_C$5[~-:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 48;~bVr}
*/ `TOX1cmw
public void sort(int[] data) { +H[Q~P8'[
for(int i=data.length/2;i>2;i/=2){ %@o&*pF^,
for(int j=0;j insertSort(data,j,i); A
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} FDl,Ey^r/
} O-?z' @5cI
insertSort(data,0,1); 3b,=
} "i}Z(_7yr
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/** #DrZ`Aq
* @param data .HQVj 'g
* @param j AUu5g
* @param i K90D1sD
*/ IruyE(;HS
private void insertSort(int[] data, int start, int inc) { 5f/@:~
int temp; vI4%d,
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sb8z_3
} P*}9,VoY
} 5?D1][
} =ZFcxGo
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} ScM}m
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快速排序: .LWOM8)
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package org.rut.util.algorithm.support; v$qpcu#o
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import org.rut.util.algorithm.SortUtil; 6z1aG9G
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/** Z5"!0B^ j
* @author treeroot fRZUY<t
* @since 2006-2-2 cq+nWHqF{J
* @version 1.0 aNuZ/9O
*/ :u[
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public class QuickSort implements SortUtil.Sort{ O('i*o4!}
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/* (non-Javadoc) Rfkzv=<"X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z226yNlS
*/ M6@'9E]|>
public void sort(int[] data) { Hsd|ka$x>
quickSort(data,0,data.length-1); &>+I7Ts]
} +An![1N,
private void quickSort(int[] data,int i,int j){ o|b[(t$;O
int pivotIndex=(i+j)/2; ;]l{D}
file://swap PHe~{"|d?
SortUtil.swap(data,pivotIndex,j); U|y;b+n`
pw(U< )
int k=partition(data,i-1,j,data[j]); os"[Iji
SortUtil.swap(data,k,j); >8F{lbEe
if((k-i)>1) quickSort(data,i,k-1); RT_Pd\(qD
if((j-k)>1) quickSort(data,k+1,j); Ztpm_P6
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} X&FuqB
/** U#~nN+SIt
* @param data 0.{oA`5N
* @param i e{rHO,#A>
* @param j y9re17{
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* @return wr;|\<c
*/ ixI5Xd<
private int partition(int[] data, int l, int r,int pivot) { 6{Cu~G{]N
do{ GqK&'c
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YVg}q#
SortUtil.swap(data,l,r); *F%ol;|Q
} @y~BYiKs
while(l SortUtil.swap(data,l,r); >Wr
return l; @D=2Er\
} [&O:qaD^
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} ,ovv
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改进后的快速排序: PvCE}bY{}
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package org.rut.util.algorithm.support; Nfvg[c
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import org.rut.util.algorithm.SortUtil; +FK<j;}C7
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/** 3&2q\]Y,
* @author treeroot w~-d4M NM
* @since 2006-2-2 Z'kYf
* @version 1.0 wZb@VG}%
*/ ^aoLry&i=
public class ImprovedQuickSort implements SortUtil.Sort { VqU:`?#"a
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private static int MAX_STACK_SIZE=4096; :!\./z8v
private static int THRESHOLD=10; $B/cj^3
/* (non-Javadoc) _kLoDju%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]<= t
*/ *(IO<KAg8
public void sort(int[] data) { FeMu`|2
int[] stack=new int[MAX_STACK_SIZE]; FZ/&[;E!
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int top=-1; Uij$
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int pivot; GUXX|W[6
int pivotIndex,l,r; Yl=
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stack[++top]=0; }@4*0_g"Aw
stack[++top]=data.length-1; 4 XQ?By
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while(top>0){ &YMj\KmlSg
int j=stack[top--]; hn.fX:}
int i=stack[top--]; aQ.
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pivotIndex=(i+j)/2; ~Sq >c3Wn
pivot=data[pivotIndex]; }OFk.6{{&v
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SortUtil.swap(data,pivotIndex,j); ".4^?d_^VF
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file://partition bE"CSK#
l=i-1; 3]P=co@
r=j; <s>SnOD
do{ zx*f*L,6F
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _6(=0::x
SortUtil.swap(data,l,r); k,,}N9
} |zE7W
while(l SortUtil.swap(data,l,r); S"l&=J2dc
SortUtil.swap(data,l,j); 78wcMQNX9
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if((l-i)>THRESHOLD){ UpbzH(?#
stack[++top]=i; Aj_}B.
stack[++top]=l-1; \JchcQ
} ,bJx|
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if((j-l)>THRESHOLD){ tp7fmn*
stack[++top]=l+1; Qi M>59[
stack[++top]=j; tH(Z9\L 7
} qyto`n7
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} dO2cgY}
file://new InsertSort().sort(data); M6>l%[
insertSort(data); Vufw:}i+^
} 4'M#m|V
/** HDYf^mcW
* @param data =S,^"D\Z:
*/ Z6I!4K
private void insertSort(int[] data) { r?$\`,;
int temp; ^,3 >}PU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Oe?nX>
} Aq-v3$XL
} pP .
} E?-K_p
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} }v:h EMO
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归并排序: C]k\GlhB
Gfvz%%>l
package org.rut.util.algorithm.support; 8w\&QX
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import org.rut.util.algorithm.SortUtil; /w|YNDA]j
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/** a P`;Nr=
* @author treeroot 3cnsJV]
* @since 2006-2-2 D=8=wT2<
* @version 1.0 bY`k`3v
*/ ,HkJ.6KF
public class MergeSort implements SortUtil.Sort{ _|F h^hq
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/* (non-Javadoc) (*p |Kzu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !l}es4~.a
*/ V
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public void sort(int[] data) { Ft07>E$/Q^
int[] temp=new int[data.length]; C 9DRVkjj
mergeSort(data,temp,0,data.length-1); |{$Vk%cUE
} Ts.61Rx
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5y.kOe4vH
int mid=(l+r)/2;
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;r]?|6
if(l==r) return ; O)&V}hU*
mergeSort(data,temp,l,mid); m~2PpO
mergeSort(data,temp,mid+1,r); <FP&1Eg!|
for(int i=l;i<=r;i++){ VLR W,lR9O
temp=data; O5E \#*<K
} D&.+Dx^G
int i1=l; i7iL[+f]Q
int i2=mid+1; "wdC/
for(int cur=l;cur<=r;cur++){ ]c*&5c$
if(i1==mid+1) =ove#3
data[cur]=temp[i2++]; KZ&{Ya
else if(i2>r) H>2)R7h
data[cur]=temp[i1++]; }s? 9Hnqa
else if(temp[i1] data[cur]=temp[i1++]; *M09Y'5]
else )[>{
Ie2
data[cur]=temp[i2++]; m$ "B=b2
} X"*pt5B6`
} I_\j05
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} ZPRkk?M}.
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改进后的归并排序: [8[g_
xzh`q
package org.rut.util.algorithm.support; *{6{ZKM
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import org.rut.util.algorithm.SortUtil; C`Zz\DNG@
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/** ^i:%0"[*^i
* @author treeroot w6aq/m"'
* @since 2006-2-2 FbhF45H
* @version 1.0 jYI\.bc
*/ =)!sWY:
public class ImprovedMergeSort implements SortUtil.Sort { l]C#bL>i
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private static final int THRESHOLD = 10; Dn~c
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/* HHzAmHt
* (non-Javadoc) Bq@_/*'*Y
* gM>geWB<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ebfT%_N
*/ UU'0WIbY6
public void sort(int[] data) { -c4g;;%
int[] temp=new int[data.length]; xl>8B/Zmf#
mergeSort(data,temp,0,data.length-1); 6
);8z!+
} , Ox$W
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private void mergeSort(int[] data, int[] temp, int l, int r) { JCO+_d#x
int i, j, k; sBm)D=Kll
int mid = (l + r) / 2; > zA*W<g
if (l == r) rel_Z..~
return; 4]G J+a
if ((mid - l) >= THRESHOLD) !:baG]Y
mergeSort(data, temp, l, mid); _TntZv.?
else '9u(9S
insertSort(data, l, mid - l + 1); z_f^L %J0
if ((r - mid) > THRESHOLD) FdGnNDl*e
mergeSort(data, temp, mid + 1, r); Y#[xX2z9
else T_)G 5a
insertSort(data, mid + 1, r - mid); -kzp>=
9x`1VR
:
for (i = l; i <= mid; i++) { ij5|P4Eka
temp = data; B_mT[)ut
} ;&c9!LfP
for (j = 1; j <= r - mid; j++) { *47HN7
temp[r - j + 1] = data[j + mid]; o3W@)|>
} .fAHP
5-
int a = temp[l]; nD.K*# u
int b = temp[r]; 8'qq!WR~
for (i = l, j = r, k = l; k <= r; k++) { y**YFQ*sc
if (a < b) { HSR,moI
data[k] = temp[i++]; NK\0X5##.
a = temp; nvB<pSm
} else { T*z*x=<5
data[k] = temp[j--]; A01PEVd@A
b = temp[j]; m$bYx~K
} 6L"b O'_5K
} ;;S9kNp^v
} H1c>3c
[}I|tb>Pg
/** U1Y0G[i)
* @param data qnFg7X>C,
* @param l W2{4s
1
* @param i h<G7ocu !
*/ s14D(:t(
private void insertSort(int[] data, int start, int len) { OP|X-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !5
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} <m/XGFc
} Dtox/ ,"
} ):\+%v^
} `(r0+Qx
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堆排序: uS JLIb
Tol V3
package org.rut.util.algorithm.support; GX'S4B
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import org.rut.util.algorithm.SortUtil; Yfx?3
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/** p+228K ;H
* @author treeroot Y4+iNdd
* @since 2006-2-2 )X3
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* @version 1.0 h1y3gl[;TD
*/ 2UopGxrPKw
public class HeapSort implements SortUtil.Sort{ Fr-Vq=j&
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/* (non-Javadoc) '!`| H 3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ixL[(*V
*/ ^x Z=";eq
public void sort(int[] data) { --k!KrL
MaxHeap h=new MaxHeap(); 1+[,eq
h.init(data); s)Xz}QPK.
for(int i=0;i h.remove(); qC-4X"y+
System.arraycopy(h.queue,1,data,0,data.length); 5~$WSL?O)
} W.59Al'
cG (%P$
private static class MaxHeap{ s`pdy$
% .wx]:o
void init(int[] data){ %0({MU
this.queue=new int[data.length+1]; B`w8d[cL7
for(int i=0;i queue[++size]=data; G
*<g%"
fixUp(size); RB6TM
} bN|1%[7
} v?}rA %so
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private int size=0; Jx Kd
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private int[] queue; [q/eRIS_
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public int get() { YgtW(j[
return queue[1]; b8[
ayy
} =L;g:hc<
sQ&<cBs2
public void remove() { 7W+{U02O
SortUtil.swap(queue,1,size--); iG"1~/U
fixDown(1); x7i,jMR
} JUJrtKS
file://fixdown %|ioNXMu
private void fixDown(int k) { IR&b2FTcU
int j; 7#*`7 K'P!
while ((j = k << 1) <= size) { y'<5P~W!a
if (j < size %26amp;%26amp; queue[j] j++; DYrci?8Ith
if (queue[k]>queue[j]) file://不用交换 b/tcD r
break; cV7a, *
SortUtil.swap(queue,j,k); AmUH]+5KT
k = j; T t_QAIl
} !<F5W<V
} i&<@}:,
private void fixUp(int k) { ]4'V59\
while (k > 1) { '$4&q629d
int j = k >> 1; %6&c3,?U\n
if (queue[j]>queue[k]) B- |C%~fe
break; g>a%
gVly
SortUtil.swap(queue,j,k); ACI.{`SrQ=
k = j; zs'Jgm.v
} 6I|9@~!y[
} w;kiH+&
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} #8%~ u+"N
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} }_Y\6fcd
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SortUtil: vtzbF1?O
%4/X;w\3
package org.rut.util.algorithm; aq9Ej]1b
N0YJ'.=8,
import org.rut.util.algorithm.support.BubbleSort; kPSi6ci
import org.rut.util.algorithm.support.HeapSort; Nig)!4CG
import org.rut.util.algorithm.support.ImprovedMergeSort; ~`0=-Qkd
import org.rut.util.algorithm.support.ImprovedQuickSort; A8ClkLC;I
import org.rut.util.algorithm.support.InsertSort; -(E-yCu
import org.rut.util.algorithm.support.MergeSort; |KSoS#Y
import org.rut.util.algorithm.support.QuickSort; WVx^}_FD0
import org.rut.util.algorithm.support.SelectionSort; ko~e*31_E
import org.rut.util.algorithm.support.ShellSort; xfqU
atC
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/** bGik~
* @author treeroot F[X;A\
* @since 2006-2-2 c}2"X,
* @version 1.0 `t7GYmw^#
*/ FCChB7c`
public class SortUtil { Emv9l~mIu
public final static int INSERT = 1; ~tB9kLFG
public final static int BUBBLE = 2; sb%l N
public final static int SELECTION = 3; _!o0bYD
public final static int SHELL = 4; tSiQrI
public final static int QUICK = 5; s~I#K[[5
public final static int IMPROVED_QUICK = 6; ?T>N vKF
public final static int MERGE = 7; :(4];Va
public final static int IMPROVED_MERGE = 8; (y2P."
public final static int HEAP = 9; sP%J`L@h
@SAJ*hfb0
public static void sort(int[] data) { n:JG+1I
sort(data, IMPROVED_QUICK); 22D,,nC0+=
} eie u|_
private static String[] name={ P}D5 j
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $# b
}; liTAV9<
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private static Sort[] impl=new Sort[]{ a0cW=0l=
new InsertSort(), o6S`7uwJ*/
new BubbleSort(), `Ro>?H
new SelectionSort(), l4q7,%G
new ShellSort(), w%f51Ex
new QuickSort(), 4?~Ei[KgQn
new ImprovedQuickSort(), 9q"G g?
new MergeSort(), OC2%9Igx0
new ImprovedMergeSort(), rXnG"A
new HeapSort() ,CnUQx0
}; 90+Hv:wF
GI#TMFz3
public static String toString(int algorithm){ Ji:0J},m
return name[algorithm-1]; 8?k.4{?
} 8j!(*'J.
7R".$ p
public static void sort(int[] data, int algorithm) { u9dL-Nr`
impl[algorithm-1].sort(data); s B!2't
} WFpR@53Db
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public static interface Sort { *g/@-6
public void sort(int[] data); =;HmU.Uek%
} Voc&T+A m
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public static void swap(int[] data, int i, int j) { 9
!qVYU42(
int temp = data; nzORG
data = data[j]; gb/M@6/j
data[j] = temp; JSm3ZP|GqJ
} ]6 {\`a
} uu582%tiG