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。 Yv}V =O%
插入排序: ~,199K#'
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package org.rut.util.algorithm.support; EfTuHg$pe
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import org.rut.util.algorithm.SortUtil; w 0V=49
/** Ucj
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* @author treeroot e.8(tEqZ1
* @since 2006-2-2 cjTV~(i'4A
* @version 1.0 1 uKWvp0\
*/ 8SJi~gV
public class InsertSort implements SortUtil.Sort{ 4T]n64Yid
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/* (non-Javadoc) =Zg%& J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vh%=JL
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*/ Gw\-e;,
public void sort(int[] data) { F;I % 9-R
int temp; _{d0Nm
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _A[k&nO!&J
} U64WTS@
} X>0$zE@0
} Q
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} n/>^!S
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冒泡排序: ,};UD
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package org.rut.util.algorithm.support; Q Pel n)
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import org.rut.util.algorithm.SortUtil; 9e`.H0
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/** A7|CG[wZ
* @author treeroot W.B;Dy,Y
* @since 2006-2-2 8$c_M
* @version 1.0 n!nXM
*/ N+l 0XjZD9
public class BubbleSort implements SortUtil.Sort{ Rh=,]Y
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/* (non-Javadoc) ^rHG#^hA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r)9&'m .:
*/ 3G4N0{i
public void sort(int[] data) { ZQ&A'(tt4
int temp; s8/sH];
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,KM-DCwcG
if(data[j] SortUtil.swap(data,j,j-1); `oDs]90
} K GVAP
} qIO<\Yl
} xK8n~.T('
} lphELPh
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} $p(,Qz(.8
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选择排序: %Ydzzr3
x_C#ALq9
package org.rut.util.algorithm.support; w<m)T
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import org.rut.util.algorithm.SortUtil; qtqTLl@u
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/** 't3@dz_dG
* @author treeroot [(hB%x_"
* @since 2006-2-2 /SXms'C
* @version 1.0 Sxj _gn
*/ SGZ]_
public class SelectionSort implements SortUtil.Sort { YTQom!O
ZPM,ZGlu:
/* 0+i\j`O&
* (non-Javadoc) SP&Y|I$:
* X_j=u1*5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X5(S+;v"^
*/ #Cwzk{p(
public void sort(int[] data) { Eyv|~D
int temp; isdEs k#A.
for (int i = 0; i < data.length; i++) { L>,j*a_[
int lowIndex = i; d%"?^e
for (int j = data.length - 1; j > i; j--) { #4?(A[]>H
if (data[j] < data[lowIndex]) { C< :F<[H
lowIndex = j; ~#doJ:^H3
} _n[4+S*v(
} cH5@Jam
SortUtil.swap(data,i,lowIndex); *zf@J'
} AADvk_R
} E^RPK{zO
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} ,P?R
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Shell排序: aCL_cVOMR
Is87
9_Z
package org.rut.util.algorithm.support; ";)SA,Z
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import org.rut.util.algorithm.SortUtil; >%~E <
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/** 5`ma#_zk|f
* @author treeroot m &U
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* @since 2006-2-2 [vIHYp
* @version 1.0 JD\:bI
*/ m[@7!.0=
public class ShellSort implements SortUtil.Sort{ `7;I*|
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/* (non-Javadoc) ]Z@+
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }F*u
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*/ F-=W7 D:[c
public void sort(int[] data) { G4jaHpPi
for(int i=data.length/2;i>2;i/=2){ :QSCky*i
for(int j=0;j insertSort(data,j,i); *mqoyOa
} #-QQ_
} ++s=$D
insertSort(data,0,1); IZ2c<B5&
} 8Nr,Wq
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/** AT#&`Ew
* @param data qR
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* @param j [WOLUb
* @param i ~%6GF57gC
*/ jLULf+8&
private void insertSort(int[] data, int start, int inc) { zU+` o?al
int temp; KcGM=z?:
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -3M6[`/
} hM!D6: t
} [l+1zt0w0
} t"0Z=`Wi
py,B6UB5
} w$JG:y#
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快速排序: 1|za>N6[yu
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package org.rut.util.algorithm.support; 0]dL;~0y.
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import org.rut.util.algorithm.SortUtil; =[O;/~J%:
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/** LL~bq(b
* @author treeroot 8:j8>K*6
* @since 2006-2-2 3pSkk
* @version 1.0 x(e=@/qp
*/ Z4\$h1tl
public class QuickSort implements SortUtil.Sort{ _)q,:g~fu
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/* (non-Javadoc) +U(m b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mVYLI!n}0#
*/ 6Xjr0C+
public void sort(int[] data) { zwAkXj
quickSort(data,0,data.length-1); c
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} 3P1OyB
private void quickSort(int[] data,int i,int j){ \R>!HY
int pivotIndex=(i+j)/2; ?#F}mOVAa
file://swap )'{:4MX
SortUtil.swap(data,pivotIndex,j); q]%c
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int k=partition(data,i-1,j,data[j]); .P[
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SortUtil.swap(data,k,j); Z5/g\G[
if((k-i)>1) quickSort(data,i,k-1); :tu_@3bg-
if((j-k)>1) quickSort(data,k+1,j); V$Y5EX
:@6,|2be=
} kc d~`+C
/** J4
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* @param data 9}`A_KzFx
* @param i ~Co7 %e V
* @param j D. 2HM
* @return b {e nD
*/ e2~i@vq
private int partition(int[] data, int l, int r,int pivot) { (,<ti):
do{ 5b_[f(
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Zy2@1-z6
SortUtil.swap(data,l,r); fu/v1Nhm
} [@@Ovv
while(l SortUtil.swap(data,l,r); 4
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return l; > m GO08X
} GI}h)T
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} XDvT#(Pu
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改进后的快速排序: kI974:e42
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package org.rut.util.algorithm.support; S8+Xk= x
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import org.rut.util.algorithm.SortUtil; QKYGeT7&Y'
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/** ``o:N`
* @author treeroot I(r ^q"
* @since 2006-2-2 ^+:_S9qst
* @version 1.0 #2c-@),
*/ MjMPbGUX{
public class ImprovedQuickSort implements SortUtil.Sort { =4
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private static int MAX_STACK_SIZE=4096; 5fS89?/?
private static int THRESHOLD=10; .}.5|z} A
/* (non-Javadoc) ]@bo; .
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v7VJVLH,I7
*/ 4NxtU/5-sU
public void sort(int[] data) { fG O.wb
int[] stack=new int[MAX_STACK_SIZE]; ~SkdP7 )
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int top=-1; EAq/Yw2$
int pivot; j r6)K;:.
int pivotIndex,l,r; F9]j{'#
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stack[++top]=0; Zs!)w9y&V
stack[++top]=data.length-1; D,+I)-k<
6.|f iQs]
while(top>0){ M:h~;+s
int j=stack[top--]; HPs$R[
int i=stack[top--]; H@er" boi
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pivotIndex=(i+j)/2; Ftj3`Mu
pivot=data[pivotIndex]; &;7\/m*W1
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SortUtil.swap(data,pivotIndex,j); r7sPFM
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file://partition r?d601(fa
l=i-1; ,WbO8#z+
r=j; u D_|/ (
do{ E]6C1C&K
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :h1itn
SortUtil.swap(data,l,r); nK Rx_D$d
} [Fe`}F}Co8
while(l SortUtil.swap(data,l,r); o9~ Z! &p
SortUtil.swap(data,l,j); $Y][-8{t
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if((l-i)>THRESHOLD){ [|V<e+>T/
stack[++top]=i; he&*N*of:
stack[++top]=l-1; RH^8 "%\
} [-_u{j
if((j-l)>THRESHOLD){ a9}cpfG=)
stack[++top]=l+1; 25h.u>6@{
stack[++top]=j; e4Ol:V
} dNG>:p
& :x_
} -gH1`*YL
file://new InsertSort().sort(data); |"DQ^)3Pi
insertSort(data); n_sCZ6uXEQ
} =dUeQ?>t=
/** mYXe0E#6
* @param data e m<(wJ-Y
*/ fZH:&EP
private void insertSort(int[] data) { ?n>h/[/
int temp; fb4/LVg'J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OT{wqNI
} $/nU0W
} +j&4[;8P:
} #0"Fw$Pc
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} [GZ%K`wx
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归并排序: ^KhA\MzY
a_w#,^/P
package org.rut.util.algorithm.support; <i`Ipj
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import org.rut.util.algorithm.SortUtil; IIUoB!`
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/** z%(m:/N70
* @author treeroot Y~hBVz2g
* @since 2006-2-2 ?SRG;G1
* @version 1.0 D`,W1Z#
*/ ?kX$Y{M}
public class MergeSort implements SortUtil.Sort{ L|EvI.f
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/* (non-Javadoc) y|Tb&XPD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :% )va
*/ %fnL
public void sort(int[] data) { '@i/?rNi%N
int[] temp=new int[data.length]; sL75C|f9
mergeSort(data,temp,0,data.length-1); x6\EU=,
} $(K[W}
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private void mergeSort(int[] data,int[] temp,int l,int r){ k?3NF:Yy7
int mid=(l+r)/2; ob05:D_bc9
if(l==r) return ; UUc{1"z{
mergeSort(data,temp,l,mid); ({i}EC7{
mergeSort(data,temp,mid+1,r); XT>
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for(int i=l;i<=r;i++){ .z4
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temp=data; cm@q{(r
} :{bvCos<)
int i1=l; |RS9N_eRt
int i2=mid+1; Pky/fF7e
for(int cur=l;cur<=r;cur++){ "MQy>mD6
if(i1==mid+1) 3Cmbt_WV
data[cur]=temp[i2++]; X|fl_4NC>
else if(i2>r) luRtuXn[8
data[cur]=temp[i1++]; pyYm<dn
else if(temp[i1] data[cur]=temp[i1++]; dc.9:u*w
else W5PNp%+KE
data[cur]=temp[i2++]; dU<\FW_
} ]=!wMn* *
} N^z4I,GV(
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} I
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改进后的归并排序: s:ig;zb
6U~AKq"+f
package org.rut.util.algorithm.support; ZFwUau
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import org.rut.util.algorithm.SortUtil; 4Bg"b/kF
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/** $2uk;&"?A=
* @author treeroot nX%b@cOXj
* @since 2006-2-2 3}R}|Ha
J#
* @version 1.0 Wd"<u2
*/ ,yc_r=_
public class ImprovedMergeSort implements SortUtil.Sort { U[7 &
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private static final int THRESHOLD = 10; c
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/* N~NUBEKcp
* (non-Javadoc) ^f6pw!
* Xb#!1hA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )1?#q[x
*/ cG!\P: re
public void sort(int[] data) { (Yi1U~{:
int[] temp=new int[data.length]; oP>+2.i
mergeSort(data,temp,0,data.length-1); >,%or cN
} zI-]K,!
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private void mergeSort(int[] data, int[] temp, int l, int r) { (|O9L s7N
int i, j, k; 9r2l~zE
int mid = (l + r) / 2; I;xSd.-
if (l == r) rfo7\'yk
return; \dAs<${(
if ((mid - l) >= THRESHOLD) ,f*Q3 S/I
mergeSort(data, temp, l, mid); H@,h$$
else T)c<tIr6
insertSort(data, l, mid - l + 1); (8"advc6
if ((r - mid) > THRESHOLD) oRkh>yj'
mergeSort(data, temp, mid + 1, r); Cb}I-GtO
else a
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insertSort(data, mid + 1, r - mid); j!c~%hP
6W\G i>
for (i = l; i <= mid; i++) { J2ZV\8t
temp = data; i}Q"'?
} [&(~{#}M:
for (j = 1; j <= r - mid; j++) { ^sVr#T
temp[r - j + 1] = data[j + mid]; gOy;6\/
} {,+{,Ere
int a = temp[l]; = Ed0vw
int b = temp[r]; T
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for (i = l, j = r, k = l; k <= r; k++) { 0u) m9eg
if (a < b) { Xb<>AzEM
data[k] = temp[i++]; {gz-w|7
a = temp; LvqWA}
} else { Y_zMj`HE
data[k] = temp[j--];
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b = temp[j]; H\fsyxM7
} FUVp}>#U
} X$2f)3
} $c{fPFe-
oGRd ;hsF
/** E1j3c
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* @param data +)hxYLk&I
* @param l 5pT8 }?7
* @param i xx@[ecW
*/ \483S]_-z{
private void insertSort(int[] data, int start, int len) { !,|-{":
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H+{@VB
} ?$K.*])e
} >PzZt8e
} ?W>`skQ
} b:5-0uxjs
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堆排序: Ht:\
z;cu
jF-:e;-
package org.rut.util.algorithm.support; ~&aULY?)]
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import org.rut.util.algorithm.SortUtil; %8H$62w]
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0*)rI#
/** RFLfvD<
* @author treeroot -2[#1S*
* @since 2006-2-2 ]$uC~b
* @version 1.0 C
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*/ ;X^#$*=Q
public class HeapSort implements SortUtil.Sort{ 5 JlgnxRq
kY?tUpM!TB
/* (non-Javadoc) K {kd:pr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {+m8^-T
*/ ]>Ym
public void sort(int[] data) { l$Vy\CfK3n
MaxHeap h=new MaxHeap(); Z($i+L% .
h.init(data); HC=ZcK'W
for(int i=0;i h.remove(); U9\\8
System.arraycopy(h.queue,1,data,0,data.length); h% KEg667
} :%z#s
Gy[anDE&
private static class MaxHeap{ et/:vLl13
Ab]tLz|Z
void init(int[] data){ BT&R:_:
this.queue=new int[data.length+1]; "F}dZ
for(int i=0;i queue[++size]=data; u]Q}jqiq"
fixUp(size); L2p?]:-
} .'&pw}F
} Yj'9|4%+|
^.R!sQ
private int size=0; tkH]_cH'w
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private int[] queue; /7])]vZ_
$#-rOi /
public int get() { OPzudO
return queue[1]; _
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} Y6&v&dA;
eM{u>n+`F0
public void remove() { <T?-A}0uO
SortUtil.swap(queue,1,size--); 4b[bj").A
fixDown(1); (~eS$8>.
} Q
8Hl7__^
file://fixdown mZ2CGOR
private void fixDown(int k) { >O<a9wz
int j; JRi:MWR<r
while ((j = k << 1) <= size) { ?)J/uU2w
if (j < size %26amp;%26amp; queue[j] j++; \c<;!vkZ04
if (queue[k]>queue[j]) file://不用交换 pHoHngyi&
break; 1Xo0(*O
SortUtil.swap(queue,j,k); f*<Vq:N=\
k = j; u.|%@
} J/jkb3
} Y~g\peG7
private void fixUp(int k) { W03mdRW
while (k > 1) { {j9TzR
int j = k >> 1; pJvPEKN
if (queue[j]>queue[k]) XrM+DQ;
break;
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SortUtil.swap(queue,j,k); u {_, S3Aa
k = j; #lrwKHZ+
} },j |eA/W
}
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`X5!s
} uUg;v/:
+Ps.HW#NY
} a51e~mg Z`
m{Vd3{H40
SortUtil: aSvv(iV
b"A,q
package org.rut.util.algorithm; QZ l#^-on
UP^8Yhdo
import org.rut.util.algorithm.support.BubbleSort; j{OA%G(I
import org.rut.util.algorithm.support.HeapSort; 4?1Qe\A^
import org.rut.util.algorithm.support.ImprovedMergeSort; #0r~/gW
import org.rut.util.algorithm.support.ImprovedQuickSort; n!4\w>h
import org.rut.util.algorithm.support.InsertSort; @KK6Jy OTQ
import org.rut.util.algorithm.support.MergeSort; ,_u7@Ix
import org.rut.util.algorithm.support.QuickSort; salC4z3
import org.rut.util.algorithm.support.SelectionSort; ekvs3a^
import org.rut.util.algorithm.support.ShellSort; v1 8<~
a*y9@RC}
/** #+1|O;PB#
* @author treeroot ?{qUn8f2
* @since 2006-2-2 gLX<>|)*
* @version 1.0 7.<jdp
*/ 9$\s
v5
public class SortUtil { 4j=3'Z|
public final static int INSERT = 1; Cw+boB_tip
public final static int BUBBLE = 2; D_d>A+
public final static int SELECTION = 3; t|i NSy3
public final static int SHELL = 4; U`qkeNd
public final static int QUICK = 5; 4C =W~6~
public final static int IMPROVED_QUICK = 6;
^wolY0p
public final static int MERGE = 7; Ncz4LKzt
public final static int IMPROVED_MERGE = 8; zG#5lzIu,
public final static int HEAP = 9; _li3cXE
%3a-@!|1<
public static void sort(int[] data) { mcV<)UA}
sort(data, IMPROVED_QUICK); f256;3n
} }_'5Vb_
private static String[] name={ !:|*!
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JJd qdX;
}; X(ph$,[
"tCTkog3]
private static Sort[] impl=new Sort[]{ @q'kKVJs
new InsertSort(), J#..xJ?XRD
new BubbleSort(), "#iJ/vy
new SelectionSort(), {nV/_o$$
new ShellSort(), `3F#k[IR
new QuickSort(), .rtA sbp.!
new ImprovedQuickSort(), 8 ??-H0P
new MergeSort(), XYo,5-
new ImprovedMergeSort(), '0D$C},^|8
new HeapSort() `DY
yK?R
}; +X/a+y-
^!1!l-
public static String toString(int algorithm){ Ocdy;|&
return name[algorithm-1]; P4[kW}R
} |'?vlUCd
>B{NxL3->
public static void sort(int[] data, int algorithm) { :oIBJ u%/
impl[algorithm-1].sort(data); u(f
} %Ln`c.C
q}P@}TE
public static interface Sort { Rml'{S
public void sort(int[] data); ~*iF`T6
} %y6Q3@
N1~bp?$1
public static void swap(int[] data, int i, int j) { kZw"a*6
int temp = data; gI^&z
data = data[j]; NpH8=H9
data[j] = temp; 6|jZv~rS$
} |owr?tC
} h]oUY.Pf