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。 c5^HGIe1
插入排序: 1ui)Hv=h*
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package org.rut.util.algorithm.support; f./K/
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import org.rut.util.algorithm.SortUtil; e0(/(E:
/** \HO)ss)"
* @author treeroot Wep^He\:
* @since 2006-2-2 |u>V>
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* @version 1.0 v.]{b8RR
*/ -_ 9k+AV
public class InsertSort implements SortUtil.Sort{ ]W3_]N 3
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/* (non-Javadoc) 'x%gJi#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =E2 a#Vd
*/ `PARZ|
public void sort(int[] data) { E^)FnXe5
int temp; Ll|-CY $
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .?u<|4jE6
} iYr)Ao5X
} lrE"phYk
} =NY;#Jjn
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} K$Bv4_|x
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冒泡排序: { {\oC$
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package org.rut.util.algorithm.support; KPToyCyR1
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import org.rut.util.algorithm.SortUtil; 'pt(
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/** Ur+U#}
* @author treeroot /bykIUTKI
* @since 2006-2-2 ]zYIblpde
* @version 1.0 lc
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*/ :of([e|u6
public class BubbleSort implements SortUtil.Sort{ @1oX
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/* (non-Javadoc) DZqG7p$u4i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sn[xI9}O
*/ 5M=U*BI
public void sort(int[] data) { DQ8/]Z{H
int temp; 0h1u W26^
for(int i=0;i for(int j=data.length-1;j>i;j--){ x+Yo#u22
if(data[j] SortUtil.swap(data,j,j-1); yhKH}
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} '#c#.O
} ?;RY/[IX6
} uqcG3Pi
} qiet<F
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} 76D$Nm
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选择排序: 7I
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package org.rut.util.algorithm.support; suQTi'K1
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import org.rut.util.algorithm.SortUtil; ku,{NY
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/** N5K(yY_T
* @author treeroot bkdXBCBx?
* @since 2006-2-2 5ih>x3S1/
* @version 1.0 +[
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*/ 6c!F%xU}
public class SelectionSort implements SortUtil.Sort { #H7
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mP*$wE9b,:
/* y`j_]qvt
* (non-Javadoc) e\X[\ve
* /rpr_Xw}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^1 ){
@(
*/ n>)aw4
public void sort(int[] data) { &vmk!wAs
int temp; ,Mw93Kp
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for (int i = 0; i < data.length; i++) { WdOxwsq"
int lowIndex = i; J%"5?)[z
for (int j = data.length - 1; j > i; j--) { ,esEh5=Ir
if (data[j] < data[lowIndex]) { m%.4OXX"&
lowIndex = j; 80Y%C-Y:
} x=H{Rv
} 5:r
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SortUtil.swap(data,i,lowIndex); z9
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} P
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} At@0G\^
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} $W|JQ h
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Shell排序: 6Mk#) ebM
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package org.rut.util.algorithm.support; sq=EL+=j
b;
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import org.rut.util.algorithm.SortUtil; Hx6ODj[-
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/** s 4rva G@a
* @author treeroot jUE:QOfRib
* @since 2006-2-2 >h8m8J
* @version 1.0 J,,VKA&
*/ 9U;
public class ShellSort implements SortUtil.Sort{ Yp(0 XP5o
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/* (non-Javadoc) 1M`>;fjYa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <SJ6<'
*/ 7[=G;2<
public void sort(int[] data) { 8qkQ*uJP
for(int i=data.length/2;i>2;i/=2){ eTjPztdJbx
for(int j=0;j insertSort(data,j,i); z(c8] Wu#
} 9wCgJ$te
} (P?|Bk[
insertSort(data,0,1); \X\< +KU
} a)W|gx6Y
Y
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/** pF6u3]
* @param data o;wSG81
* @param j o.r D
* @param i l'm|**
*/ ~H#c-B
private void insertSort(int[] data, int start, int inc) { |};d:LwX
int temp; #qVvh3#g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); w &YUb,{Y
} ?J6Ek*E#
} #NyO'
} )7Hx<?P
RNB-W%
} bCP2_h3*
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快速排序: ps:"0^7
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package org.rut.util.algorithm.support; &(<>}
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import org.rut.util.algorithm.SortUtil; o.Ww.F
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/** Mm,\e6#*
* @author treeroot 3 US`6Y"
* @since 2006-2-2 YCP D+
* @version 1.0 #<Y3*^~5d
*/ KiG19R$
public class QuickSort implements SortUtil.Sort{ 3_G0eIE"u
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/* (non-Javadoc) dSjO12b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7_3 6xpw
*/ gHh(QRA
public void sort(int[] data) { "E7<S5cr
quickSort(data,0,data.length-1); >lmqPuf
} aVHID{Gf Z
private void quickSort(int[] data,int i,int j){ +uF}mZS^
int pivotIndex=(i+j)/2; \a0{9Xx F
file://swap ir}*E=*
SortUtil.swap(data,pivotIndex,j); u0)O Fz
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int k=partition(data,i-1,j,data[j]); =M:Po0?0E
SortUtil.swap(data,k,j); fiC0'4.,
if((k-i)>1) quickSort(data,i,k-1); ?v,c)
if((j-k)>1) quickSort(data,k+1,j); tMdSdJ8
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} ?$)a[UnqX
/** <9H3d7%
* @param data Q7pCF,;
* @param i vD2(M1Q
* @param j S7j(4@
* @return `[E-V
*/ {pi_yr3
private int partition(int[] data, int l, int r,int pivot) { p".wqg*W
do{ q%k&O9C2]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); <x$nw'H9
SortUtil.swap(data,l,r); kqZRg>1A
} f3,LX]zKA
while(l SortUtil.swap(data,l,r); D;2V|CkU
return l; 3qGz(6w6E
} 3,Z;J5VL4!
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} C3.]dsv:
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改进后的快速排序: V4u4{wU]
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package org.rut.util.algorithm.support; (e_p8[x
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import org.rut.util.algorithm.SortUtil; gs0jwI
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/** /xSJljexz
* @author treeroot {B#w9>'b
* @since 2006-2-2 =MJRQV67
* @version 1.0 k5%)
*/ S_*Gv O
public class ImprovedQuickSort implements SortUtil.Sort { rpEIDhHv
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private static int MAX_STACK_SIZE=4096; [ZG>FJDl8
private static int THRESHOLD=10; 3bd`q
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/* (non-Javadoc) Z;u3G4XlF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dg~m}La
*/ O)R}|
public void sort(int[] data) { D0
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int[] stack=new int[MAX_STACK_SIZE]; irw5<l
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int top=-1; C:AV?
int pivot; wYFkGih
int pivotIndex,l,r; zNGUll$
}#~E-N3x
stack[++top]=0; v 9G~i
stack[++top]=data.length-1; a`9pHH:7Q
-#<{3BJTrz
while(top>0){ p4\sKF8-
int j=stack[top--]; y] 9/Xr/
int i=stack[top--]; uDcs2^2l
D'moy*E
pivotIndex=(i+j)/2; rkh%[o9"/
pivot=data[pivotIndex]; E!WlQr:b$
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SortUtil.swap(data,pivotIndex,j); ZJFF4($qN
>^W6'Q$P<
file://partition vEG7A$Z"
l=i-1; c9@3=6S/
r=j; }"RVUYU
do{ 4a!%eBhX"K
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); SH"<f_
SortUtil.swap(data,l,r); um<$L
} r.u\qPT&
while(l SortUtil.swap(data,l,r); 2u0B=0x
SortUtil.swap(data,l,j); ETX>wZ
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if((l-i)>THRESHOLD){ vG)B}`M
stack[++top]=i; 04-@c
stack[++top]=l-1; jpXbFWgN
} 9!r0uU"
if((j-l)>THRESHOLD){ f;+.j/ +
stack[++top]=l+1; mJ[_q>
stack[++top]=j; @az<D7j2
} $6ucz'
oFt_ yU-
} h1B_*L
file://new InsertSort().sort(data); xe.f]a
insertSort(data); 1NTx?JJfW
} [(3 %$?[
/** 03 iy[~Y2
* @param data PktnjdFV
*/ p.MLKp-'
private void insertSort(int[] data) { KqBiF]Q
int temp; -W/D Cj<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3*{l^<`:gA
} #;1RStb:zj
} <JXHg,Q
} &{# 6Z
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} b9wC:NgQx
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归并排序: F}F{/
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package org.rut.util.algorithm.support; 1o_Zw.
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import org.rut.util.algorithm.SortUtil; p vWj)4e
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/** ;Hp78!#,
* @author treeroot )-iUUak
* @since 2006-2-2 5,O:"3>c
* @version 1.0 ZOppec1D
*/ 9qzHy}A
public class MergeSort implements SortUtil.Sort{
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/* (non-Javadoc) F7=\*U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "*c&[ALw
*/ RZ9_*Lq7+
public void sort(int[] data) { juu"V]Q1
int[] temp=new int[data.length]; )\W}&9 >
mergeSort(data,temp,0,data.length-1); 6Y.k<oem
} LF(S"Of
,#^2t_c/
private void mergeSort(int[] data,int[] temp,int l,int r){ /L]@k`.q@
int mid=(l+r)/2; .345%j
if(l==r) return ; $j!:ET'V
mergeSort(data,temp,l,mid); 2]x,joB
mergeSort(data,temp,mid+1,r); Mx3f T>?
for(int i=l;i<=r;i++){ U`{ M1@$
temp=data; MP
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} r'|ei ,
int i1=l; ,>kXn1 ,
int i2=mid+1; ]g%HU%R-m
for(int cur=l;cur<=r;cur++){ C.}ho.}
r
if(i1==mid+1) !QqVJ a{j
data[cur]=temp[i2++]; od !s5f!
else if(i2>r) QY\'Uu{
data[cur]=temp[i1++]; `$JOFLa
else if(temp[i1] data[cur]=temp[i1++]; D-m%eP.
else ePSD#kY5
data[cur]=temp[i2++]; UpiZd/K
} ds2xl7jg
} f7%g=0.F
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} )"00fZL
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改进后的归并排序: nAsc^Yh
Fvnf;']q
package org.rut.util.algorithm.support; |^w&dj\,
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import org.rut.util.algorithm.SortUtil; %u Dd#+{
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/** ~PN[ #e]
* @author treeroot idS+&:'
* @since 2006-2-2 )Dcee@/7S
* @version 1.0 G he@m6|D
*/ \pI
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public class ImprovedMergeSort implements SortUtil.Sort { 3m~3l d
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private static final int THRESHOLD = 10; cvpZF5mL]U
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/* &k(tDP
* (non-Javadoc) |>Pv2
* %P*b&H^0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
sBE@{w%
*/ E
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public void sort(int[] data) { CF+:v(NL
int[] temp=new int[data.length]; X`]>J5
mergeSort(data,temp,0,data.length-1); zHW&i~
} wA87|YK8*
m
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private void mergeSort(int[] data, int[] temp, int l, int r) { tU8aPiUl
int i, j, k; e.|t12)L "
int mid = (l + r) / 2; :yOJL [x
if (l == r) pQm-Hr78j
return; v1NFz>Hx
if ((mid - l) >= THRESHOLD) BK.RYSN
mergeSort(data, temp, l, mid); "(a}}q 9-
else )9!J
$q
insertSort(data, l, mid - l + 1); %nkbQ2^
if ((r - mid) > THRESHOLD) A.!3{pAb
mergeSort(data, temp, mid + 1, r); ?Xp+5{
else c,*a|@
insertSort(data, mid + 1, r - mid); s6oIj$
368H6 Jj
for (i = l; i <= mid; i++) { 1fh6A`c
temp = data; u/`x@u
} Ap}`Q(.
for (j = 1; j <= r - mid; j++) { _`9WNJiL
temp[r - j + 1] = data[j + mid]; uVw|jj
} S.owVMQ
int a = temp[l]; <FvljKuq+
int b = temp[r]; 8KzH
-
for (i = l, j = r, k = l; k <= r; k++) { _<)HFg6
if (a < b) { hnv0Loe.IW
data[k] = temp[i++]; DH4|lb}
a = temp; FJB
/tg
} else { ~HBx5Cpi
data[k] = temp[j--]; %bhFl,tL
b = temp[j]; >>>MTV f
}
%S%0/
} ?zK>[L
} g^k=z:n3,
B=i%Z_r]w
/** ^Ov+n1,)
* @param data T%2%*oa
* @param l VmTgD96
* @param i y)`q% J&
*/ Wp=&nh
private void insertSort(int[] data, int start, int len) { S^@#%>
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,j[1!*Z_[
} Mwd.S
} w8-L2)Q}I
} Lor__
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} 1h?:gOig
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堆排序: (/J %Huy
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package org.rut.util.algorithm.support; dcN4N5r
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import org.rut.util.algorithm.SortUtil; %VgK::)r
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/** 8t&'Yk
* @author treeroot ' ]vMOGG
* @since 2006-2-2 d|$-l:(J
* @version 1.0 +PHuQ
*/ _dn*H-5hO
public class HeapSort implements SortUtil.Sort{ boIFN;Aq"
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/* (non-Javadoc) M_F4I$V4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H~ =;yy
*/ 4' <y
public void sort(int[] data) { d/Fy0=0
MaxHeap h=new MaxHeap(); )$E'2|Gm/
h.init(data); xh!aB6m8R
for(int i=0;i h.remove(); L(kW]
System.arraycopy(h.queue,1,data,0,data.length); cN#f$
} ]+AgXUrbOD
4{ exv
private static class MaxHeap{ ; HjT
2v1dSdX,W
void init(int[] data){ 6NzS <
this.queue=new int[data.length+1]; #4?:4Im#
for(int i=0;i queue[++size]=data; 1?#Wg>7'
fixUp(size); X\]Dx./
} qk\LfRbj
} ig:z[k?
\&%y4=y<sE
private int size=0; v!rOT/I
H?dEgubg7]
private int[] queue; .h;X5q1
<p8>"~R
public int get() { (I(k$g[>
return queue[1]; Y@V6/D} 1
} uBBW2
\AB*C_Ri
public void remove() { ;Q%3WD
SortUtil.swap(queue,1,size--); x9H
qc9q
fixDown(1); Gjf1Ba
} %{";RfSVX%
file://fixdown Y t0s
private void fixDown(int k) { ;i;;{j@$i
int j; |#(g8ua7
while ((j = k << 1) <= size) { lyrwm{&
if (j < size %26amp;%26amp; queue[j] j++; o|c"W}W
if (queue[k]>queue[j]) file://不用交换 cjBHczkY
break; F5f1j]c
SortUtil.swap(queue,j,k); AV["%$:
k = j; 7:h_U9Za?$
} ?nx
1{2[
} Q02:qn?T
private void fixUp(int k) { Ix|^c268o<
while (k > 1) { pB0Do6+{
int j = k >> 1; Qx !!
Ttd{
if (queue[j]>queue[k]) -;o`(3wZq
break; b'yW+
SortUtil.swap(queue,j,k); 2/FH9T;e".
k = j; d0@czNWIC
} aOo;~u2-=
} ?VT
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vke]VXU9z
} d`4@aoM
&5;y&dh
} ffE>%M*
JQWW's}
SortUtil: vD4<G{
d9uT*5f
package org.rut.util.algorithm; [=I==?2`X
mnWbV\ VY
import org.rut.util.algorithm.support.BubbleSort; W/|C
import org.rut.util.algorithm.support.HeapSort; @V#
wYt
import org.rut.util.algorithm.support.ImprovedMergeSort; lIF*$#`oh*
import org.rut.util.algorithm.support.ImprovedQuickSort; {uMqd-Uu
import org.rut.util.algorithm.support.InsertSort; ;X2 (G
import org.rut.util.algorithm.support.MergeSort; J*CfG;Y:
import org.rut.util.algorithm.support.QuickSort; 5mYI5~
p
import org.rut.util.algorithm.support.SelectionSort; wa4(tM2
import org.rut.util.algorithm.support.ShellSort; ]gGCy '*)
4 '-GcH
/** VNLggeX'U
* @author treeroot n`)wD~mk
* @since 2006-2-2 h ^6Yjy
* @version 1.0 2VNfnk
*/ #2*2xt
public class SortUtil { t#[u
X?
public final static int INSERT = 1; -, #LTW<.
public final static int BUBBLE = 2; z;EnAy {9
public final static int SELECTION = 3; l<mEGKB#
public final static int SHELL = 4; k@= LR
public final static int QUICK = 5; P(BV J_n
public final static int IMPROVED_QUICK = 6; Z<0+<tt
public final static int MERGE = 7; M.R]hI
public final static int IMPROVED_MERGE = 8; tqo!WuZAj
public final static int HEAP = 9; Z'sO9Sg8>
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public static void sort(int[] data) { ,0Y5O?pu\
sort(data, IMPROVED_QUICK); 4?^t=7N
} F
DCHB~D
private static String[] name={ c;e2=
A
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Bswd20(w
}; Q35/Sp[;x
}X`jhsqT
private static Sort[] impl=new Sort[]{ \LS+.bp%
new InsertSort(), z~BrKdS
new BubbleSort(), 6|D,`dk3U
new SelectionSort(), VX;tglu2
new ShellSort(), %Sdzr!I7*
new QuickSort(),
b(~
gQM
new ImprovedQuickSort(), O/=i'0Xv
new MergeSort(), ;Q =EI%_tv
new ImprovedMergeSort(), 9v<Sng
new HeapSort() | <ZkJR3B
}; grhwPnKl
21BlLz
public static String toString(int algorithm){ $yx34=
return name[algorithm-1]; sR. ecs+
} IFY,j8~q
pMX#!wb
public static void sort(int[] data, int algorithm) { z<F.0~)jb
impl[algorithm-1].sort(data); AQ 5CrYb
} lAwOp
d>Z{TFY
public static interface Sort { *?+maK{5+
public void sort(int[] data); Y(]&j`%
} ,1YnWy*
#)BdN
public static void swap(int[] data, int i, int j) { hFjXgpz5
int temp = data; &,Xs=Lvmq
data = data[j]; vx\h
Njb
data[j] = temp; :>[;XT<
} 5)yQrS !{:
} ^m