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。 6S~sVUL9`
插入排序: 9Vf1Xz
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package org.rut.util.algorithm.support; dXnl'pFS
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import org.rut.util.algorithm.SortUtil; Ge<nxl<Bd
/** D1&A,2wO
* @author treeroot +o9":dl
* @since 2006-2-2 85GKymz$P
* @version 1.0 ]7e =fM9V;
*/ yBI'djL~>
public class InsertSort implements SortUtil.Sort{ MR}Agu#LG
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/* (non-Javadoc) HF(KN{0.B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k?'B*L_Mzv
*/ `hb%+-lj+
public void sort(int[] data) { AFAAuFE"
int temp; \<g*8?yFs
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); []D@Q+1
} %plo=RF
} ~*wk6&|
} 71\xCSI1w&
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} nvPwngEQm
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冒泡排序: 6R^^ .tCs
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package org.rut.util.algorithm.support; V5rST +
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import org.rut.util.algorithm.SortUtil; rOVVL%@QqJ
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/** v\{!THCSh
* @author treeroot /gG"v5]
* @since 2006-2-2 Er{>p|n=
* @version 1.0 S;-
LIv
*/ L+q/){Dd(
public class BubbleSort implements SortUtil.Sort{ r3PT1'P?L
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/* (non-Javadoc) &Udb9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5^x1cUB]
*/ p }~qf
public void sort(int[] data) { {lc\,F* $
int temp; %ALwz[~]
for(int i=0;i for(int j=data.length-1;j>i;j--){ >m$ 1+30X
if(data[j] SortUtil.swap(data,j,j-1); j{Q9{}<e
} Ll4g[8
} v'3J.?N
} |/)${*a4n
} $\U4hHOo
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} PGoh1Uu
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选择排序: 2_Z ? #Y
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package org.rut.util.algorithm.support; ilqy/fL#
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import org.rut.util.algorithm.SortUtil; q1KZ5G)6GJ
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/** :Nz2z[W$
* @author treeroot #iHs*
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* @since 2006-2-2 OL^l 3F
* @version 1.0 P`cq H(
*/ z+n,uHs
public class SelectionSort implements SortUtil.Sort { ~G6Ox)/
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/* d\gJ$ ~^K
* (non-Javadoc) G\+L~t
* #;2n;.a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (bH`x]h#
*/ v: OR
public void sort(int[] data) { ) iN/ua
int temp; 7\ s"o&G
for (int i = 0; i < data.length; i++) { [rV>57`YD
int lowIndex = i; 9^#c|
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for (int j = data.length - 1; j > i; j--) { A"dR{8&0
if (data[j] < data[lowIndex]) { oUQ,61H
lowIndex = j; ;"~
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} FwkuC09tI
} _)>_{Pm
SortUtil.swap(data,i,lowIndex); P"8~$ P#
} @a0DT=>dT
} ORJIo
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} +b3RkkC
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Shell排序: {CGUL|y
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package org.rut.util.algorithm.support; }o?AP vd
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import org.rut.util.algorithm.SortUtil; zkuU5O
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/** keX,d#
* @author treeroot RbP6F*f
* @since 2006-2-2 _M`--.{\O[
* @version 1.0 QLvHQtzwX
*/ v,-HU&/*B
public class ShellSort implements SortUtil.Sort{ %^4CSh
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/* (non-Javadoc) q$Zh@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }J:U=HJ
*/ 7e|s
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public void sort(int[] data) { t!W(_8j
for(int i=data.length/2;i>2;i/=2){
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for(int j=0;j insertSort(data,j,i); ^6MU
0Q2
} /_AnP
} i1NY9br
insertSort(data,0,1); g(qJN<RC/
} ~=6xyc/c
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/** wsZF;8u t
* @param data 59Xi3KY
* @param j jjw`Dto&
* @param i "55skmD.P
*/ .f%fHj
private void insertSort(int[] data, int start, int inc) { Sq/
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int temp; bMg(B-uF7
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &5fJPv &
} N kb|Fd/s
} \r^qL^
} "d#Y}@*~o
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} u~7hWiY<2
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快速排序: GP!?^r:en
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package org.rut.util.algorithm.support; J%v=yBC2
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import org.rut.util.algorithm.SortUtil; ]'!f28Ng-
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/** W>Y@^U&x`
* @author treeroot $+8cc\fq
* @since 2006-2-2 Z&Pg"a?\
* @version 1.0 :|V$\!o'U
*/ bf ]f=;.+
public class QuickSort implements SortUtil.Sort{ 8Wrh]egu1
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/* (non-Javadoc) &zl|87M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +%zAQeb
*/ -BrMp%C
public void sort(int[] data) { q8X feoUV
quickSort(data,0,data.length-1); PWaw]*dFmy
} >BIMi^
private void quickSort(int[] data,int i,int j){ T6O::o6
int pivotIndex=(i+j)/2; iV5yJF{ZH
file://swap <r.)hT"0
SortUtil.swap(data,pivotIndex,j); XX7{-Yy
8##-EN;ag
int k=partition(data,i-1,j,data[j]); CJ/X}hi,
SortUtil.swap(data,k,j); aE`c%T):`
if((k-i)>1) quickSort(data,i,k-1); x[wq]q#*
if((j-k)>1) quickSort(data,k+1,j); c(3~0Yr
q}`${3qQ3
} k$R~R-'
/** 0LPig[
* @param data 9oyE$S h]
* @param i $:=A'd2
* @param j F3N?Nk/
* @return L"E7#}
*/ p#ol*m5wE
private int partition(int[] data, int l, int r,int pivot) { (7mAt3n
k
do{ e}D3d=6`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *? 5*m+
SortUtil.swap(data,l,r); ^!<U_;+
} j#X.KM
while(l SortUtil.swap(data,l,r); \l'm[jy>
return l; }\z.)B4,
} @)UZ@ ~R
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} K#%&0D!
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改进后的快速排序: mPOGidxix
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package org.rut.util.algorithm.support; Qiua
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import org.rut.util.algorithm.SortUtil; W^0w
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/** 0C =3dnp6
* @author treeroot Q}1 R5@7
* @since 2006-2-2 4H,`]B8(D
* @version 1.0 B( ]M&
*/ E=jNi
public class ImprovedQuickSort implements SortUtil.Sort { xAqb\|$^
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private static int MAX_STACK_SIZE=4096; n)L*
private static int THRESHOLD=10; G^~k)6v=m
/* (non-Javadoc) `e(c^ z#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C\3y {s
*/ {v=T [D
public void sort(int[] data) { oo,uO;0G
int[] stack=new int[MAX_STACK_SIZE]; T?:Rdo!:u
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int top=-1; 1/RsptN"v
int pivot; =q>'19^Jx
int pivotIndex,l,r; bHPYp5UwN
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stack[++top]=0; @E^~$-J5j
stack[++top]=data.length-1; W0(_~
:?k>HQe
while(top>0){ {HL3<2=o
int j=stack[top--]; `NnUyQ;T
int i=stack[top--]; )'Oh`$M
0)%YNaskj
pivotIndex=(i+j)/2; FYOD
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pivot=data[pivotIndex]; Ipf|")*
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SortUtil.swap(data,pivotIndex,j); s8QMewU
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file://partition H9KKed47d/
l=i-1; <:(6EKJAq}
r=j; %u`8minCt
do{ 8yRJD[/S
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8;z6=.4xtg
SortUtil.swap(data,l,r); b^ L
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} g3Ec"_>P
while(l SortUtil.swap(data,l,r); ,/YF-L$(t
SortUtil.swap(data,l,j); XOxr?NPQ^
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if((l-i)>THRESHOLD){ I'\kFjc
stack[++top]=i; g+DzscIT
stack[++top]=l-1; nnCGg+l
} kv8Fko
if((j-l)>THRESHOLD){ bsuus
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stack[++top]=l+1; JCz@s~f\y
stack[++top]=j; zw+B9PYqX
} xgABpikC^
_ 6O\W%it
} 6^%UU
o%
file://new InsertSort().sort(data); IKABB W
insertSort(data); 0FGe=$vD
} ?bPRxR
/** ykv94i?Q
* @param data VK}fsOnj0
*/ aF)1Nm[
private void insertSort(int[] data) { aki_RG>U'
int temp; jL(qf~c_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "nZ*{uv
} E8>Rui@9
} .9R
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} `1'6bp`Z
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} dArDP[w
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归并排序: F_Z- 8>P
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package org.rut.util.algorithm.support; '#s05hr
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import org.rut.util.algorithm.SortUtil; @b"t]#V(E
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/** }tsYJlh5
* @author treeroot p+l !6
* @since 2006-2-2 7.C;NT
* @version 1.0 -cZDGt
*/ 5Ycco,x
public class MergeSort implements SortUtil.Sort{ ~(x;5{
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/* (non-Javadoc) WtViW=j'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kHXL8k#T
*/ u @~JiiC%
public void sort(int[] data) { ?g?L3vRK
int[] temp=new int[data.length]; P/xKnm~
mergeSort(data,temp,0,data.length-1); K3m]%m2\
} uIcn{RZ_z
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private void mergeSort(int[] data,int[] temp,int l,int r){ ) _mr! z(S
int mid=(l+r)/2; /TZOJE(2j
if(l==r) return ; I"Ms-zs
mergeSort(data,temp,l,mid); Q@
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mergeSort(data,temp,mid+1,r); s4 6}s{6
for(int i=l;i<=r;i++){ /DQc&.jK
temp=data; H,+I2tEs
} \cC%!4
int i1=l; 9;Itqe{8w
int i2=mid+1; ,Vh.T&X5
for(int cur=l;cur<=r;cur++){ t'BLVCu
if(i1==mid+1) Yu?95qk tP
data[cur]=temp[i2++]; D|rFu
else if(i2>r) |AcRIq
data[cur]=temp[i1++]; 'a$Gv&fu
else if(temp[i1] data[cur]=temp[i1++]; WA]c=4S
else Y|8:;u'
data[cur]=temp[i2++]; 2R=DB`3
} /I)yU>o
} }:u~K;O87
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} vFE;D@bz:
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改进后的归并排序: 2WtRJi?b|
XK|R8rhg8`
package org.rut.util.algorithm.support; Jd5:{{Lb
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import org.rut.util.algorithm.SortUtil; kGdt1N[
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/** vhsk0$f
* @author treeroot H2
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* @since 2006-2-2 3dht!7/
* @version 1.0 S}$r>[t
*/ BT)X8>ct
public class ImprovedMergeSort implements SortUtil.Sort { ]4R[<<hd
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private static final int THRESHOLD = 10; jeGj<m
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/* t5'V6nv
* (non-Javadoc) qZ}P*+`Q
* F>]m 3(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) % z#f.Ql
*/ ^
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public void sort(int[] data) { K'X2dG*
int[] temp=new int[data.length]; ,y+$cM(
mergeSort(data,temp,0,data.length-1); @+9<O0
} 0
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private void mergeSort(int[] data, int[] temp, int l, int r) { E<C&Cjz:H
int i, j, k; +)j1.X
int mid = (l + r) / 2; FXzFHU/dP
if (l == r) N\HQN0d9
return; Eh =~T9
if ((mid - l) >= THRESHOLD) ;5tazBy&:C
mergeSort(data, temp, l, mid); P>sFV
else W?eu!wL#p
insertSort(data, l, mid - l + 1); C4hx@abA
if ((r - mid) > THRESHOLD) %I-+Ead0i
mergeSort(data, temp, mid + 1, r); TQ`Rk;0R
else 8F:e|\SB#
insertSort(data, mid + 1, r - mid); H"C[&r
s/7 A7![
for (i = l; i <= mid; i++) { mcn 2Wt
temp = data; *P 3V
} /F4pb]U!*
for (j = 1; j <= r - mid; j++) { zGc:
@z
temp[r - j + 1] = data[j + mid]; &Ch#-CUE/
} `;l?12|X
int a = temp[l]; '0\@Mc U]
int b = temp[r]; >~`r:0',
for (i = l, j = r, k = l; k <= r; k++) { Q}!mx7b0]
if (a < b) { zfwS
data[k] = temp[i++]; jMbC Y07v
a = temp; CBDG./
} else { V^hE}`>z&
data[k] = temp[j--]; ' j6gG
b = temp[j]; hUD7_arKF
} f{"8g"[[)(
} hFk3[zTy
} *1 G>YH
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/** N gLU$/y;
* @param data {0;3W7
* @param l ?W(6
* @param i xB@|LtdO9;
*/ Qb!PRCHQ
private void insertSort(int[] data, int start, int len) { @h*fFiY&{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?7M.o
} Ov#=]t5
} yA)(*PFz
} v^ /Q 8Q
} [kqYfY?K
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堆排序: h Xb%;GL
Y3h/~bM%
package org.rut.util.algorithm.support; Oky**B[D'
r?CI)Y;
import org.rut.util.algorithm.SortUtil; "+zCS|
gORJWQv
/** 7@6g<"I
* @author treeroot :5/Uh/sX
* @since 2006-2-2 sHc Td>xS
* @version 1.0 :QWq"cBem
*/ \`, [)`
public class HeapSort implements SortUtil.Sort{ H"Klj_<dH0
bWZbG{Y.
/* (non-Javadoc) e(NLX`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hky;CD~$
*/ l<Q>N|1#k%
public void sort(int[] data) { Z4){
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MaxHeap h=new MaxHeap(); 8vuCc=
h.init(data); a=XW[TY1
for(int i=0;i h.remove(); BS&;n
System.arraycopy(h.queue,1,data,0,data.length); +n })Y
} .[u>V
q~L^au8
private static class MaxHeap{ _/S?#
v+e|o:o#
void init(int[] data){ AH4EtZC=W
this.queue=new int[data.length+1]; ;.wX@
for(int i=0;i queue[++size]=data; W5/0`[4
fixUp(size); (~)%Fo9X"
} 'a^{=+
} cECi')
83cW=?UgA
private int size=0; rdnRBFt
W$qd/'%
private int[] queue; {B*W\[ns
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public int get() { NNG}M(/V
return queue[1]; aS|wpm)K>8
} ;WT{|z
~|wos-nM
public void remove() { pPVRsXy
SortUtil.swap(queue,1,size--); q{die[J
fixDown(1); d bS
+
} #Fu>|2F|
file://fixdown y[O-pD`
private void fixDown(int k) { \Hqc9&0
int j; Q,Z*8FH=
while ((j = k << 1) <= size) { DWt*jX *
if (j < size %26amp;%26amp; queue[j] j++; h{lDxOH*
if (queue[k]>queue[j]) file://不用交换 0aR,H[r[?
break; ,}xbAA#
SortUtil.swap(queue,j,k); xjdw'v+qZo
k = j; *m+5Pr`7
} 6AN)vs}
} NYABmI/0c
private void fixUp(int k) { +:6Ii9GN
while (k > 1) { SbsouGD,{
int j = k >> 1; oUx[+Gnv
if (queue[j]>queue[k]) JO@Bf
break; ">dq0gD
SortUtil.swap(queue,j,k); 6Ggs JU
k = j; ^TXf sQs
} {OT:3SS7
} d~ng6pA
*.f2VQ~H
} pz_e =xr
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} SQE[m9v
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SortUtil: (#(Or
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package org.rut.util.algorithm; Z\>, ),O
K&A;Z>l,v5
import org.rut.util.algorithm.support.BubbleSort; MM{_Ur7Q
import org.rut.util.algorithm.support.HeapSort; 3Rl,GWK
import org.rut.util.algorithm.support.ImprovedMergeSort; eukA[nO7G
import org.rut.util.algorithm.support.ImprovedQuickSort; OQlG+|
import org.rut.util.algorithm.support.InsertSort; yno(' 1B@
import org.rut.util.algorithm.support.MergeSort; 0?bA$y
import org.rut.util.algorithm.support.QuickSort; U; xF#e
import org.rut.util.algorithm.support.SelectionSort; lx,`hl%
import org.rut.util.algorithm.support.ShellSort; /jD-\,:L}
g?/XZ5$a5
/** d-!<C7O}
* @author treeroot j kn^Z":
* @since 2006-2-2 1H4fJ3-
* @version 1.0 NVIWWX9?
*/ j033%p+Xc
public class SortUtil { 8IY19>4'5J
public final static int INSERT = 1; eE:&qy^
public final static int BUBBLE = 2; S0@T0y#
public final static int SELECTION = 3; eS!C3xC;J]
public final static int SHELL = 4; X} JOX9pK
public final static int QUICK = 5; 6`nR5 fh
public final static int IMPROVED_QUICK = 6; -rY 7)=
public final static int MERGE = 7; /Ic[N&
public final static int IMPROVED_MERGE = 8; ):6-
public final static int HEAP = 9; 2z2`
Z>A{i?#m
public static void sort(int[] data) { X:q_c =X
sort(data, IMPROVED_QUICK); H/cTJ9zz
} 8:g!w:$x
private static String[] name={ jMpa?Jp 1
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" DvT+`X?R
}; *v #/Y9}
F&@ |M(
private static Sort[] impl=new Sort[]{ E8[XG2ye
new InsertSort(), rFd@mO
new BubbleSort(), .gD km^
new SelectionSort(), T)\NkM&
new ShellSort(), ^Vo"fI`=C
new QuickSort(), (r F?If
new ImprovedQuickSort(), 70iH0j)
new MergeSort(), QUP|FIpZ
new ImprovedMergeSort(), <f%/px%1
new HeapSort() wGXwzU
}; uW[3G
j@P5(3r
public static String toString(int algorithm){ 9O;vUy)
return name[algorithm-1]; \graMu}-
} c f*zejbw
)/%S=c
public static void sort(int[] data, int algorithm) { YN#XmX%
impl[algorithm-1].sort(data); 6"%qv`.Fp
} j+>Q# &h9
yh!B!v'
public static interface Sort { 1P5LH5
public void sort(int[] data); _t.FL@3e
} 8-A|C<
"
W8*
2;F]
public static void swap(int[] data, int i, int j) { &z ksRX
int temp = data; 5c;En6W
data = data[j]; 84Zgo=P}
data[j] = temp; Yw^ Gti'<
} J#@lV
} tR O IBq|