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。 V`,[=u?c
插入排序: #)A?PO2
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package org.rut.util.algorithm.support; E#$_uZ4
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import org.rut.util.algorithm.SortUtil; f=_?<I{
/** IHbo w0'
* @author treeroot cm@ oun
* @since 2006-2-2 1LE^dS^V
* @version 1.0 e4qk>Cw
*/ ~5 pC$SC6>
public class InsertSort implements SortUtil.Sort{ ;D"P9b]9$
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/* (non-Javadoc) @@/'b'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9`CiE
*/ $qtU
public void sort(int[] data) { /-{O\7-D
int temp; O\?5#.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vQYfoam;
} ;}eEG{`Y
} A,lw-(.z4Z
} ss`q{ARb
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} 2x`xyR_Q.R
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冒泡排序: pmW6~%}*
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package org.rut.util.algorithm.support; I0l.KiBm
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import org.rut.util.algorithm.SortUtil; W|H4i;u
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/** [wy3Ld
* @author treeroot S?nNZW\6[
* @since 2006-2-2 L\:YbS~]
* @version 1.0 ^mgI%_?1
*/ U.pr} hq
public class BubbleSort implements SortUtil.Sort{ @0UwI%.
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s
/* (non-Javadoc) XuFm4DEJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }U?gKlLg
*/ j |'#5H`
public void sort(int[] data) { @%G' U&R{
int temp; cB|Cy{%
for(int i=0;i for(int j=data.length-1;j>i;j--){ hDB`t
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if(data[j] SortUtil.swap(data,j,j-1); 7:VEM;[d
} LTYuxZ
}
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} F`;TU"pDf
} g~Nij~/
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} f`u5\!}=!
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选择排序: lNh=>DPu
M=\d_O#;Z
package org.rut.util.algorithm.support; (iCZz{l@~
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import org.rut.util.algorithm.SortUtil; do=x9k@Q
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/** 'TK$ndy;7}
* @author treeroot )~?S0]j}
* @since 2006-2-2 [al(>Wr9
* @version 1.0 C NzSBm
*/ } Jdh^t .
public class SelectionSort implements SortUtil.Sort { yRq8;@YGY
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/* }P&1s,S8J#
* (non-Javadoc) ]s*[Lib
* Bt*&L[&57
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uFrJ:l+
*/ w>z8c3Dq}
public void sort(int[] data) { x;ERRK
int temp; ^B<PD]
for (int i = 0; i < data.length; i++) { =0C l
int lowIndex = i; /\ ,_P
for (int j = data.length - 1; j > i; j--) { Io,/ +#|
if (data[j] < data[lowIndex]) { {p#l!P/
lowIndex = j; K)9j
je
} taWirqd9
} 8"?Vcw&
SortUtil.swap(data,i,lowIndex); SgCqxFii
} m0%iw1OsH%
} RR~sEUCo{
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} ,`%k'ecN
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Shell排序: <i{m.pR>
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package org.rut.util.algorithm.support; 9&[)(On74
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import org.rut.util.algorithm.SortUtil; ~>N`<S
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/** 1BMV=_
* @author treeroot 0^<Skm27"
* @since 2006-2-2 ~!3t8Hx6
* @version 1.0 [0% yJH
*/ ;I!+lx3[
public class ShellSort implements SortUtil.Sort{ R
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/* (non-Javadoc) 2_oK5*j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zzw}sZ?8
*/ t5ny"k!
public void sort(int[] data) { lQp89*b?=U
for(int i=data.length/2;i>2;i/=2){ AND7jEn
for(int j=0;j insertSort(data,j,i); m{:" 1]
} dT0^-XSY
} u=d`j
insertSort(data,0,1); Xmf
} $n=W2WJ6f
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/** ++Rdv0~
* @param data M&|sR+$^
* @param j T =eT^?v
* @param i ?VMi!-POE
*/ G zJ9N`
private void insertSort(int[] data, int start, int inc) { ;H7EB`
int temp; di]$dl|Wi
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %gV)arwK
} F9m 2C'U
} CbTf"pl
} 4 o3)*
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} oJlN.Q#u&
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快速排序: .;<7424(%
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package org.rut.util.algorithm.support; !XgQJ7y_Z
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import org.rut.util.algorithm.SortUtil; NDB*BmG
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/** K?h[.`}
* @author treeroot (,- 5(fW
* @since 2006-2-2 g2[K<
* @version 1.0 cOzg/~\1
*/ *fxep08B
public class QuickSort implements SortUtil.Sort{ q*HAIw[<y
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/* (non-Javadoc) S2koXg(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vbr~<JT=
*/ 'P@=/
public void sort(int[] data) { ucQezmie
quickSort(data,0,data.length-1); K:}h\ In
} (A7T}znG
private void quickSort(int[] data,int i,int j){ M*g2VyZ
int pivotIndex=(i+j)/2; $x;tSJ)m~
file://swap i:l80 GK
SortUtil.swap(data,pivotIndex,j); httls>:xB|
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int k=partition(data,i-1,j,data[j]); S[-.tvI;Q
SortUtil.swap(data,k,j); 7,pje j
if((k-i)>1) quickSort(data,i,k-1); pu\b`3C(
if((j-k)>1) quickSort(data,k+1,j); #D!$~h&i
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} 2"T8^r|U
/** ?,WUJH?^
* @param data &FL%H;Kfx
* @param i ::p-9F
* @param j iP~sft6
* @return ,DE(5iDS
*/ 'b LP~
private int partition(int[] data, int l, int r,int pivot) { er(8}]X8Q
do{ Ix( 6
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); i
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SortUtil.swap(data,l,r); ,3G$`
} Zr\2BOcc.l
while(l SortUtil.swap(data,l,r); fdd~e52f
return l; NY~ dM\
} "F&Tnhh4
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} l9]o\JFXk
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改进后的快速排序: Rb{+Ki
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package org.rut.util.algorithm.support; aF D="Zh
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import org.rut.util.algorithm.SortUtil; \z2vV+f
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/** fy9uLl}h
* @author treeroot 6o$Z0mG
* @since 2006-2-2 iYkRo>3!QX
* @version 1.0 ;
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*/ 60~v
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public class ImprovedQuickSort implements SortUtil.Sort { "\NF
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private static int MAX_STACK_SIZE=4096; .?A'6
private static int THRESHOLD=10; ^/G?QR
/* (non-Javadoc) gBMta+<fE~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jjxIS
*/ RI?NB6U
public void sort(int[] data) { #N; $
int[] stack=new int[MAX_STACK_SIZE]; cB{%u
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int top=-1; 4DvdEt
int pivot; <MRC%!.
int pivotIndex,l,r; G?>qd}]y0L
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stack[++top]=0; #]"/{Z
stack[++top]=data.length-1; 1Pu
, :Jt
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while(top>0){ OdO{xG G@
int j=stack[top--]; {PL,VY)Z
int i=stack[top--]; baqn7k"
7^HpVcSM
pivotIndex=(i+j)/2; "_t4F4z
pivot=data[pivotIndex]; X88F>1}
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SortUtil.swap(data,pivotIndex,j);
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file://partition EH(tUwY%{
l=i-1; g .3f2w
r=j; VIetcs
do{ p#)e:/Qy
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,Ak ^nX
SortUtil.swap(data,l,r); Nc,*hsx'
} fQxSMPWB
while(l SortUtil.swap(data,l,r); GM:,CJ?
SortUtil.swap(data,l,j); 9 _eS`,'
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if((l-i)>THRESHOLD){ E`~i-kf
stack[++top]=i; ma3Qi/
stack[++top]=l-1; O!o <P5X^
} :#qUMiu$
if((j-l)>THRESHOLD){ r|M'TA~:
stack[++top]=l+1; 'HCnB]1
stack[++top]=j; ^<!Ia
} #&k8TY
gEE9/\>%-
} ,dOMW+{
file://new InsertSort().sort(data); vXc!Zg~
insertSort(data); T{ok +$w2
} av$
/** t`uc3ta"9
* @param data wtq,`'B
*/ }lH;[+u3
private void insertSort(int[] data) { R3cg2H
int temp; +9TV:T
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CDJ$hu
} Il|GCj*N
} ^[0"vtb
} (Bsw/wv
STw oYn
} 2f `&WUe
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归并排序: 9g96 d-
ci;&CHa
package org.rut.util.algorithm.support; -7&?@M,u
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import org.rut.util.algorithm.SortUtil; r-*l1([eW
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/** 1PmX."a
* @author treeroot k2pT1QZnt
* @since 2006-2-2 ::ri3Tu
* @version 1.0 O6/xPeak
*/ c+H)ed>
public class MergeSort implements SortUtil.Sort{ wBLsz/
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/* (non-Javadoc) sLNNcj(Cy>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y4`QK+~fH
*/ _nP)uU$
public void sort(int[] data) { `6UtxJSx
int[] temp=new int[data.length]; sSNCosb
mergeSort(data,temp,0,data.length-1); ) ,yH= 6
} b##1hm~+9
@bE~@4mOu
private void mergeSort(int[] data,int[] temp,int l,int r){ 3Qa?\C&4
int mid=(l+r)/2; 8+&gp$a$
if(l==r) return ; 2!BsEvB(
mergeSort(data,temp,l,mid); 6oYIQ'hc
mergeSort(data,temp,mid+1,r); / xs9.w8-
for(int i=l;i<=r;i++){ 7pz\ScSe
temp=data; @\!ww/QT
} (xbIUz.
int i1=l; db'K!M)
int i2=mid+1; 2?*||c==*
for(int cur=l;cur<=r;cur++){ vsc&Ju%k
if(i1==mid+1) }{A?PHV5
data[cur]=temp[i2++]; j"i#R1T
else if(i2>r) \x(.d.l/
data[cur]=temp[i1++]; *CzCUu:%t
else if(temp[i1] data[cur]=temp[i1++]; ;HP#bx
else 2p+C%"n>
data[cur]=temp[i2++]; ^B|YO8.v
} j!7Qw 8
} ZRPE-l_3:
my4\mi6P
} S{-f$Q*
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改进后的归并排序: Tn /Ut}]O
22|"K**3J|
package org.rut.util.algorithm.support; r
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import org.rut.util.algorithm.SortUtil; i0iez9B
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/** xFU5\Zuw
* @author treeroot [1Uz_HY["3
* @since 2006-2-2 i_NJ -K
* @version 1.0 fQP,=
*/ H@Q`
public class ImprovedMergeSort implements SortUtil.Sort { puA|NT
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private static final int THRESHOLD = 10; W~<m[#:6C
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/* \1]rlzXGUT
* (non-Javadoc) W-ez[raY
* _Ds@lVY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >IBTBh_ka
*/ d-h"JZ9
public void sort(int[] data) { UP]1(S?
int[] temp=new int[data.length]; CIEJql?`
mergeSort(data,temp,0,data.length-1); X% X$Y6
} Hv8H.^D>
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private void mergeSort(int[] data, int[] temp, int l, int r) { &>g~-s
int i, j, k; mbGcDG[HQ
int mid = (l + r) / 2; *Wso3 6an
if (l == r) p&\K9hfi
return; @UV{:]f~e
if ((mid - l) >= THRESHOLD) o)p[
C
mergeSort(data, temp, l, mid); gJK KR]4*
else K?[)E3
insertSort(data, l, mid - l + 1); ^&-a/'D$,
if ((r - mid) > THRESHOLD) 1|]xo3j"'
mergeSort(data, temp, mid + 1, r); dqxd3,Z
else [g`, AmR\!
insertSort(data, mid + 1, r - mid); 7=vYO|a/4
W_%W%i|
for (i = l; i <= mid; i++) { ^4 8\>-Q\
temp = data; e"~)Utk
} wA631kr
for (j = 1; j <= r - mid; j++) { VXwPdMy*L
temp[r - j + 1] = data[j + mid]; ogJ<e_m
} nPOO3!<{
int a = temp[l]; 3}j1RYtz
int b = temp[r]; Za0gs @$
for (i = l, j = r, k = l; k <= r; k++) { St2Q7K5s{
if (a < b) { VKNp,Lf
data[k] = temp[i++]; `R0Y+#$8h
a = temp; vtZ?X';wh
} else { >D~w}z/fk
data[k] = temp[j--]; Z(`r -}f I
b = temp[j]; |(RZ/d<X\a
} "$DldHC
} c|Y!c!9F
} _Z.cMYN
{-h, ZdH^
/** fnWsm4
* @param data S/fW/W*/}
* @param l CL1
oAk
* @param i MJ\r 4n
*/ +sRP<as
private void insertSort(int[] data, int start, int len) { `s%QeAde
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); / gu3@@h
} 'in@9XO
} kW+G1|
} ).Gd1pE
} :3 y_mf>
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堆排序: h R~v
@hsbq
package org.rut.util.algorithm.support; JhJLqb@q
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import org.rut.util.algorithm.SortUtil; 9~~UM<66W
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/** V^2-_V]8
* @author treeroot \K}aQKB/j
* @since 2006-2-2 8YKQItK
* @version 1.0 ~#Aa Ldq
*/ r)8z#W>s
public class HeapSort implements SortUtil.Sort{ "xn|zB
LABNj{=D!
/* (non-Javadoc) :Y^I]`lR"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]u0Jd#@
*/ a_{6Qdl
public void sort(int[] data) { dyO E6Ex
MaxHeap h=new MaxHeap(); s:b"\7
h.init(data); c3#q0Ma
for(int i=0;i h.remove(); Vo >Xp
System.arraycopy(h.queue,1,data,0,data.length); 6c &Y
} (bvoF5%
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private static class MaxHeap{ R04J3D|
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void init(int[] data){ SX_4=^
this.queue=new int[data.length+1]; H(&Z:{L
for(int i=0;i queue[++size]=data; t!t=|JNf{
fixUp(size); 6v>z h
} \igaQ\~
} oCuV9dA.
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private int size=0; {g_@Tuu
c{4R*|^
private int[] queue; U0IE1_R
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public int get() {
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return queue[1]; y<*-tZV[
} %Rarr
n| C|&
public void remove() { o_rtH|ntX5
SortUtil.swap(queue,1,size--); 6p m~sD
fixDown(1); j|(:I: ]
} 9^\hmpP@D
file://fixdown N"1QX6
private void fixDown(int k) { Q.ukY@L.'
int j; 4U{m7[
while ((j = k << 1) <= size) { O]ZC+]}/
if (j < size %26amp;%26amp; queue[j] j++; q~O>a0f0
if (queue[k]>queue[j]) file://不用交换 75AslL?t
break; 61|B]ei/
SortUtil.swap(queue,j,k); FWY[=S
k = j; JJ-i_5\q
} U|?,N0%Z1
} kFwxK"n@C
private void fixUp(int k) { L[]BzsIv
while (k > 1) { -_|]N/v\
int j = k >> 1; zo44^=~%
if (queue[j]>queue[k]) hVf^
break; h[Mdr
SortUtil.swap(queue,j,k); =fWdk\Wv
k = j; vi|Zit
} > UWStzH<
} ZAeQ~ j~
(}"S)#C
} n1 v,#GE
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} X" \}sl5
s OQcx\dK
SortUtil: M=[th
QiU_hz6?v
package org.rut.util.algorithm; RJPcn)@l
H+`*Y<F@
import org.rut.util.algorithm.support.BubbleSort; *B{-uc3o
import org.rut.util.algorithm.support.HeapSort; v$3_o :
import org.rut.util.algorithm.support.ImprovedMergeSort; #_fY4vEO
import org.rut.util.algorithm.support.ImprovedQuickSort; SUu >6'LN
import org.rut.util.algorithm.support.InsertSort; >a@>N
import org.rut.util.algorithm.support.MergeSort; +?V0:Kz]
import org.rut.util.algorithm.support.QuickSort; [+gzdLad
import org.rut.util.algorithm.support.SelectionSort; pl\b-
import org.rut.util.algorithm.support.ShellSort; 4>k
I^
-[$&s FD
/** 0'@u!m?
* @author treeroot >?V<$>12
* @since 2006-2-2 )&z4_l8`=
* @version 1.0 ]QS](BbD:
*/ L#ZLawG
public class SortUtil { (3O1?n[n
public final static int INSERT = 1; KII ym9%
public final static int BUBBLE = 2; zX~}]?|9
public final static int SELECTION = 3; )S Q('vwg
public final static int SHELL = 4; H%C\Uz"o
public final static int QUICK = 5; yQwVQUW8B
public final static int IMPROVED_QUICK = 6; waQtr,m)
public final static int MERGE = 7; HamEIL-l.
public final static int IMPROVED_MERGE = 8; _[JkJwPTx
public final static int HEAP = 9; ;
8E;
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public static void sort(int[] data) { :'Xr/| s
sort(data, IMPROVED_QUICK); :x+ig5
} <m1sSghg
private static String[] name={ k/bque
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6w!e?B2/%
}; L=m:/qQL
"l2bx
private static Sort[] impl=new Sort[]{ ]#5^&w)'
new InsertSort(), 2&x7W*
new BubbleSort(), Z(UD9wY5m
new SelectionSort(), 4|F#gK5E
new ShellSort(), cAibB&`~
new QuickSort(), ^jOCenE3
new ImprovedQuickSort(), QT;Va#a
new MergeSort(), 1LyT7h
new ImprovedMergeSort(), @'HT;Q!\Vd
new HeapSort() xE1rxPuq)d
}; VF=Z`
CO'ar,
public static String toString(int algorithm){ DB~MYOX~
return name[algorithm-1]; y;:]F|%<
} G
*@@K
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public static void sort(int[] data, int algorithm) { fkG##!
impl[algorithm-1].sort(data); 4,zvFH*AH
} ^9'$Oa,*
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public static interface Sort { C#$6O8O
public void sort(int[] data); P\T| [%E'
} 5&*zY)UL
;Z4o{(/zU
public static void swap(int[] data, int i, int j) { <tW:LU(!
int temp = data; t9Vb~ Ubdb
data = data[j]; YLmjEs%
data[j] = temp; #s{aulx
} (Com,
} 1 KB7yG-#6