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。 S}Mxm2
插入排序: -^#Ix;%
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package org.rut.util.algorithm.support; >5^Z'!Z"
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import org.rut.util.algorithm.SortUtil; U7PA%
/** )%^ oR5W
* @author treeroot 4D58cR}
* @since 2006-2-2 I*lq0&
* @version 1.0 boN)C?"^h
*/ *[.\S3K`
public class InsertSort implements SortUtil.Sort{ 6Ir
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/* (non-Javadoc) P45q}v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ke3=s
*/ a S<JsB
public void sort(int[] data) { 6 Dg[b
int temp; h@W}xT
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |d%Dw^
} ;7m>40W
} =z=Guvcn`
} kOtC(\]5
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} gVG :z_6
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冒泡排序: ^kt"n(P5
Ro-Mex2
package org.rut.util.algorithm.support; .f jM9G#
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import org.rut.util.algorithm.SortUtil; K]
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/** mD )Nh
* @author treeroot 8<]> q
* @since 2006-2-2 a?JU(
* @version 1.0 %{HqF>=~
*/ /@wm?ft6Gk
public class BubbleSort implements SortUtil.Sort{ L3<XWpv
hlUF9}
/* (non-Javadoc) Nju7!yVM_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W1:o2 C7
*/ ,Y`C7Px
public void sort(int[] data) { ! prU!5-
int temp; dvL '>'g
for(int i=0;i for(int j=data.length-1;j>i;j--){ <|2_1[,sl
if(data[j] SortUtil.swap(data,j,j-1); .Zwn{SMtu
} Np/[MC
} sL\|y38'
} pnqjATGU
} ;bAy7
I)Y$?"
} {X"X.`p
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选择排序: D6ck1pxkx
x65e,'
package org.rut.util.algorithm.support; N`zHe*=[~
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import org.rut.util.algorithm.SortUtil; @x=CMF15
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/** Zy!\=-dSm
* @author treeroot ~Yr.0i.W
* @since 2006-2-2 QY^ y(I49
* @version 1.0 EI_J7J+
*/ tXp)o>"
public class SelectionSort implements SortUtil.Sort { 2XI%4
SA/0Z =
/* +6;OB@
* (non-Javadoc) w1KQ9H*
* aoJ&< vl3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {;-$;\D
*/ RMvlA'c
public void sort(int[] data) { CI @I
int temp; x`lBG%Y[-v
for (int i = 0; i < data.length; i++) { gq0gr?
int lowIndex = i;
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for (int j = data.length - 1; j > i; j--) { +'KM~c?]
if (data[j] < data[lowIndex]) { Zv-6H*zM6
lowIndex = j; Jz|(B_U
} tP:xx2N_
} DX!$k[
SortUtil.swap(data,i,lowIndex); 6g.@I!j E
} )b-G2< kb
} 4o=G) KO{
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} |BW956fBU
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Shell排序: 6XG+YIG6w
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package org.rut.util.algorithm.support; nut7b
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import org.rut.util.algorithm.SortUtil; +Rh'VZJs
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/** |aVv Lz
* @author treeroot z[k2&=c
* @since 2006-2-2 DMf9wB
* @version 1.0 :heJ5*!,
*/ A%2!Hr
public class ShellSort implements SortUtil.Sort{ jG^~{7#
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/* (non-Javadoc) y7w>/7q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jg Xbs+.
*/ Zg'[.wov
public void sort(int[] data) { 2
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for(int i=data.length/2;i>2;i/=2){ <B
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for(int j=0;j insertSort(data,j,i); rcbixOT
} C4G)anT
} '*-SvA\Cx
insertSort(data,0,1); I&vB\A
} y~d W=zO
@%TQ/L^|
/** ECSC,oJ
* @param data K:Ap|F
* @param j S2NsqHJr
* @param i bHMlh^{`%
*/ fSP~~YSeU
private void insertSort(int[] data, int start, int inc) { ~q4y'dBy*
int temp; [6Wr
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); givK{Yt<B
} 4-"wFp
} XmnqZWB
} IX>|bA;
980+Y
} ^*r${Nj
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快速排序: B8nXWi
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; 2KG j !w
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/** }E=kfMu
* @author treeroot tyDtwV|
* @since 2006-2-2 )CmuC@ Q"
* @version 1.0 K1hw'AaQ
*/ OYzJE@r^
public class QuickSort implements SortUtil.Sort{ ZN)/doK
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/* (non-Javadoc) {NFeX'5bP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y,
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*/ ::R^ w"
public void sort(int[] data) { a}
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quickSort(data,0,data.length-1); jn7}jWA
} $-y+97
private void quickSort(int[] data,int i,int j){ :Hd<S
int pivotIndex=(i+j)/2; m<yA]
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file://swap J8%|Gd0#4
SortUtil.swap(data,pivotIndex,j); IQ_0[
nFP2wvFM
int k=partition(data,i-1,j,data[j]); P]TT
SortUtil.swap(data,k,j); 01dx}L@hz
if((k-i)>1) quickSort(data,i,k-1); EvYw$j
if((j-k)>1) quickSort(data,k+1,j); <Kh\i'8
ZJ4"QsF
} Y[H_?f=;%
/** .xx#>Y-\
* @param data 0L1P'*LRU
* @param i
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* @param j Q\oUZnD$=
* @return }}2kA
*/ pFK
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private int partition(int[] data, int l, int r,int pivot) { 1_t Dp&UO
do{ d;=,/a
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9j 8t<5s
SortUtil.swap(data,l,r); D;L :a`Y
} TM}F9!*je
while(l SortUtil.swap(data,l,r); 3 x'30
return l; X+3)DE\2
} d#*5U9\z
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} bXfOZFzq)
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改进后的快速排序: d5%*^nMpY
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package org.rut.util.algorithm.support; rEf\|x=st:
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import org.rut.util.algorithm.SortUtil; 4Rm3'Ch
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/** H>]z=w~
* @author treeroot Gh
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* @since 2006-2-2 A)#sh)
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* @version 1.0 !$?@;}=
*/ KFhn}C3
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public class ImprovedQuickSort implements SortUtil.Sort { YfalsQ8
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private static int MAX_STACK_SIZE=4096; =4D_-Q
private static int THRESHOLD=10; $P-m6
/* (non-Javadoc) +,[3a%c)H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M~Slc*_%
*/ g#:XN
public void sort(int[] data) { GW#kaqC1
int[] stack=new int[MAX_STACK_SIZE]; :2My|3H\
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int top=-1; ob7_dWAG
int pivot; 'k67$H
int pivotIndex,l,r; J*Hn/m
5:d2q<x:{
stack[++top]=0; 5{a(
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stack[++top]=data.length-1; vw]nqS~N
##@#:B
while(top>0){ 5% `Ul
int j=stack[top--]; ~
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int i=stack[top--]; TxvPfU?
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pivotIndex=(i+j)/2; $ddYH
pivot=data[pivotIndex]; 2P
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SortUtil.swap(data,pivotIndex,j); Bg
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file://partition ;5k|gW
l=i-1; ~K96y$ DTE
r=j; ) R@gnTe
do{ -],?kP
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cQ41NX@I
SortUtil.swap(data,l,r); Uq.~3V+u
} N]}+F w\5
while(l SortUtil.swap(data,l,r); 5ecz'eA%
SortUtil.swap(data,l,j); }tZAU\z
N)*e^Nfb
if((l-i)>THRESHOLD){ +-\9'Q
stack[++top]=i; P`
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stack[++top]=l-1; ;QQ7vo
} 5#)<rK
if((j-l)>THRESHOLD){ 3x0wk9lND
stack[++top]=l+1; yTt (fn:;
stack[++top]=j; ->&VbR)
} ~k0)+D}
*F*fH>?C#
} S1`0d9ds#
file://new InsertSort().sort(data); E`n`#=xKR
insertSort(data); J_|}Xd)~t6
} {\/nUbo[
/** ^6oqq[$
* @param data s~ZFVi-i
*/ .b`P!
private void insertSort(int[] data) { +fQL~0tA
int temp; Sc$wR{W<:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DB%AO:8
} KdJx#Lc
} Qf>Pb$c$U
} mMAr8~A=
B9Q.s
} t/WnDR/fM
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归并排序: >Mz|e(6
J<#`IaV
package org.rut.util.algorithm.support; SzlfA%4+GR
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import org.rut.util.algorithm.SortUtil; !TL}~D:J
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/** #Rx"L&3Ue
* @author treeroot x5z4Yv^
m
* @since 2006-2-2 OG+r|.N;
* @version 1.0 CPNN!%-
*/ v6-~fcX0G
public class MergeSort implements SortUtil.Sort{ 'xZPIj+
K}<!{/fi)
/* (non-Javadoc) %)Uvf`Xhh4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h_chZB'
*/ E
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public void sort(int[] data) { -f2`qltjb
int[] temp=new int[data.length]; |id79qY7g
mergeSort(data,temp,0,data.length-1); Y+u-J4bj
} u%1k
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private void mergeSort(int[] data,int[] temp,int l,int r){ ObyuhAR
int mid=(l+r)/2; ho]!G498
if(l==r) return ; @Du}
mergeSort(data,temp,l,mid); Y`7#[g
mergeSort(data,temp,mid+1,r); #!Cter2
for(int i=l;i<=r;i++){ #G+
temp=data; -Bo~"q
} TflS@Z7C
int i1=l; 9g
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int i2=mid+1; BZ;}ROmqk
for(int cur=l;cur<=r;cur++){ Ym.l@(
if(i1==mid+1) Rs F3#H
data[cur]=temp[i2++]; tkN3BQ
else if(i2>r) NC.P2^%
data[cur]=temp[i1++]; QYTTP6 Gz+
else if(temp[i1] data[cur]=temp[i1++]; yEUNkZ5^
else 4%fN\f
data[cur]=temp[i2++]; y{`(|,[
} @> Ghfh>~D
} 8yWu{'G
5\ w=(c9A
} .p(6' TYnI
mo#0q&ZQ
改进后的归并排序: HA9Nr.NqC@
=tc`:!$
package org.rut.util.algorithm.support; _:gGD8
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import org.rut.util.algorithm.SortUtil; <duBwkiG
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/** > 1r[]&8
* @author treeroot YNg\"XjJM<
* @since 2006-2-2 hX8gV~E=y
* @version 1.0 1t[;` iZ
*/ -Y8ks7
public class ImprovedMergeSort implements SortUtil.Sort { rO(TG
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private static final int THRESHOLD = 10; c
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,%?; \?b%h
/* WS1&3mOd
* (non-Javadoc) prlyaq;4
* G/fP(o-Wd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c+8>EU AW
*/ Oj"pj:fB
public void sort(int[] data) { !u53 3
int[] temp=new int[data.length]; {\svV
0)~
mergeSort(data,temp,0,data.length-1); -7k|6"EwM
} K$<`4#i
}$Hs;4|
private void mergeSort(int[] data, int[] temp, int l, int r) { GX7 eRqz >
int i, j, k; 2q-:p8
int mid = (l + r) / 2; bB;~,W&E1
if (l == r) Q 7uAf3
return; *>aZc::
if ((mid - l) >= THRESHOLD) \)^,PA3
mergeSort(data, temp, l, mid); 0q[p{_t`
else < QDr,Hj
insertSort(data, l, mid - l + 1); \!UF|mD^tG
if ((r - mid) > THRESHOLD) obAs<nk
mergeSort(data, temp, mid + 1, r); d; mmM\3]
else 8! H8[J
insertSort(data, mid + 1, r - mid); FJa[ToZ4+
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for (i = l; i <= mid; i++) { @V* ju
temp = data; `26V`%bPkr
} 0'yG1qG
for (j = 1; j <= r - mid; j++) { S,*{q(
temp[r - j + 1] = data[j + mid]; NK7H,V}T
} c<=`<!FS[
int a = temp[l]; |
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int b = temp[r]; xb =8t!
for (i = l, j = r, k = l; k <= r; k++) { 5JBB+g
if (a < b) { >JKnGeF
data[k] = temp[i++]; Gur8.A;Y
a = temp; tt6.
jo
} else { yhcNE8mkQ/
data[k] = temp[j--]; c*x J=Gz6d
b = temp[j]; xSpMyXrQ
} g08*}0-k
} qri}=du&F
}
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/** 2BoFyL*
* @param data bz,Da
* @param l O.@g/05C
* @param i ,wtFs!8
*/ 5^/,aI
private void insertSort(int[] data, int start, int len) { E4sn[DO
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); J)9 AnGWe
} "/ tUA\=j
} 9W{,=.%MX$
} CfPXn0I
} V";mWws+?#
K #qoR /:
堆排序: &`9j)3^J.
e>L5.~i
package org.rut.util.algorithm.support; z.eJEK
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import org.rut.util.algorithm.SortUtil; *j|/2+pq
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/** x96qd%l/
* @author treeroot f{)+-8
* @since 2006-2-2 +7| [b
* @version 1.0 /xl4ohL$a
*/ .)LZ`Ge3F
public class HeapSort implements SortUtil.Sort{ 9{_8cpm4
b;S6'7Jf9
/* (non-Javadoc) N]B)Fb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VZ\O9lD
*/ ^oS$>6|
public void sort(int[] data) { uQH%.A
MaxHeap h=new MaxHeap(); 2 dHM
h.init(data); u?Fnlne4@
for(int i=0;i h.remove(); Oo FgQEr@
System.arraycopy(h.queue,1,data,0,data.length); >vUB%OLyP
} }5Yj
#v{ Y=$L
private static class MaxHeap{ T"n{WmVQ
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void init(int[] data){ JZ `>|<W
this.queue=new int[data.length+1]; 8O,?|c=>
for(int i=0;i queue[++size]=data; "hL9f=w
fixUp(size); {DU"]c/S
} q_cC7p6t
} ~mtTsZc
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private int size=0; ):e+dt
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private int[] queue; ?#d6i$
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public int get() { {}V$`L8
return queue[1]; 7; p4Wg7k}
} `YPe^!`$
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public void remove() { 9/#0?(K8
SortUtil.swap(queue,1,size--); 1o8wy_eSs
fixDown(1); 0s1'pA'
} 2;8Xz6T
file://fixdown $30oc
Tt{
private void fixDown(int k) { W7t
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int j; |~z3U>
while ((j = k << 1) <= size) { Odm#wL~E
if (j < size %26amp;%26amp; queue[j] j++; IE2CRBfs
if (queue[k]>queue[j]) file://不用交换 YQ;
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break; N1%p"(
SortUtil.swap(queue,j,k); f0vJm
k = j; WP}ixcq#
} C@1CanL@3
} Bp
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private void fixUp(int k) { m#JI!_~!
while (k > 1) { g6WPPpqus
int j = k >> 1; X2qv^G,
if (queue[j]>queue[k]) HN{z T&
break; QIQfI05
SortUtil.swap(queue,j,k); 2Zy_5>~
k = j; qpI]R
} nP<S6:s:
} S.{fDcM
q(78fZ *X
} 3QW_k5o
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} -OrR $w|e
wxE?3%.j\
SortUtil: 'TL2%T/)t
k'Gw!p}
package org.rut.util.algorithm; %<ic%gt`#
v9=}S\=Cd
import org.rut.util.algorithm.support.BubbleSort; s.VA!@F5
import org.rut.util.algorithm.support.HeapSort; /be=u@KV
import org.rut.util.algorithm.support.ImprovedMergeSort; n#4Gv|{XMD
import org.rut.util.algorithm.support.ImprovedQuickSort; I.1D*!tz
import org.rut.util.algorithm.support.InsertSort; Y6A;AmM8
import org.rut.util.algorithm.support.MergeSort; Z&Ue|Z4Qt
import org.rut.util.algorithm.support.QuickSort; +c--&tBo
import org.rut.util.algorithm.support.SelectionSort; iwU[6A
import org.rut.util.algorithm.support.ShellSort; =Q-k'= 6\
);Z]SGd
/** Ry?4h\UX5
* @author treeroot e # 5BPI
* @since 2006-2-2 P>(P2~$Y"
* @version 1.0 *:g_'K"+
*/ gyev5txn
public class SortUtil { Z,
T#,
public final static int INSERT = 1; y%S})9
public final static int BUBBLE = 2; " !-Kd'V
public final static int SELECTION = 3; }# Doy{T
public final static int SHELL = 4; v8m`jxII64
public final static int QUICK = 5; ?sXG17~Bm
public final static int IMPROVED_QUICK = 6; =\Iu$2r`
public final static int MERGE = 7; z<B CLP
public final static int IMPROVED_MERGE = 8; ='}#`',
public final static int HEAP = 9; RP!
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public static void sort(int[] data) { GKZN}bOm\
sort(data, IMPROVED_QUICK); *)'V vu<
} [k$efwJ
private static String[] name={ oZN'HT
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?'eq",c#4N
}; x r[Vp
s9O2k}]
private static Sort[] impl=new Sort[]{ >zs5s
new InsertSort(), jAC78n,Fi@
new BubbleSort(), _okWQvdH
new SelectionSort(), (?>cn_m
new ShellSort(), KxIyc7.
new QuickSort(), Y.sz|u 1
new ImprovedQuickSort(), ~}'F887 f
new MergeSort(), SJk>Jt=
new ImprovedMergeSort(), A_R!uRD8-
new HeapSort() ys8Q.oBv_`
}; )&,{?$ .
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public static String toString(int algorithm){ &eQJfc\a
return name[algorithm-1]; 2 0tO#{Li
} F PR`tE
UV AJxqz%}
public static void sort(int[] data, int algorithm) { z)-c#F@%
impl[algorithm-1].sort(data); I4=Xb^Ux
} =rFN1M/n{E
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public static interface Sort {
)h_8vO2
public void sort(int[] data); (dqCa[
} =-#G8L%Q
QR0(,e$Dl
public static void swap(int[] data, int i, int j) { h/)_)
r.x
int temp = data; asVX82<
data = data[j]; hH>``gK
data[j] = temp; G$bJ+
} !yJICjXj
} wRvb8F0