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。 Lnl(2xD
插入排序: nsC3
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package org.rut.util.algorithm.support; 8U"v6S~A%Q
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import org.rut.util.algorithm.SortUtil; z6\UGSL
/** ;%9 |kU
* @author treeroot 9!\B6=r y4
* @since 2006-2-2 |$Sedzj'
* @version 1.0 N7zft
*/ ? pmHFlx
public class InsertSort implements SortUtil.Sort{ VQt0 4?
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/* (non-Javadoc) h
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9d659iC
*/ e\l7Iu
public void sort(int[] data) { UYJZYP%r
int temp; 7hcYD!DS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kd(8I_i@
} 7M~K,E(7~
} s
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} ,AFu C<
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} %JBz5G
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冒泡排序: R4cM%l_#W
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package org.rut.util.algorithm.support; _4So{~Gf1
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import org.rut.util.algorithm.SortUtil; n0 {i&[I~+
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/** pofie$
* @author treeroot U(g:zae
* @since 2006-2-2 L|xbR#v
* @version 1.0 0RLg:SV
*/ - % h.t+=U
public class BubbleSort implements SortUtil.Sort{ :U%W%
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/* (non-Javadoc) CYP q#rd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .@U@xRu7|
*/ i$G@R%
public void sort(int[] data) { \V8PhO;j
int temp; @o _}g !9=
for(int i=0;i for(int j=data.length-1;j>i;j--){ *vxk@`K~
if(data[j] SortUtil.swap(data,j,j-1); HyZqUbHa
} ZhaP2pC%4
} osAd1<EIC
} *)T^ChD,
} ~Ea} /Au
4F'LBS]=0
} Jhhb7uU+
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选择排序: \&3+D8H>n
+gtbcF@rx
package org.rut.util.algorithm.support; Id .nu/
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import org.rut.util.algorithm.SortUtil; )23H1
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/** "7F?@D$e
* @author treeroot BLiF
5
* @since 2006-2-2 x*U)Y
* @version 1.0 u0c1:Uv#~e
*/ _op}1
public class SelectionSort implements SortUtil.Sort { 6iE<T&$3P
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/* q ^N7I@Y
* (non-Javadoc) l4YJ c
* { @{']Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vaw+.sG`AP
*/ XJ|
<?
public void sort(int[] data) { 7WS p($
int temp; %RRNJf}z
for (int i = 0; i < data.length; i++) { G@X% +$I
int lowIndex = i; 051E6-
for (int j = data.length - 1; j > i; j--) { |{NYkw
if (data[j] < data[lowIndex]) { oQVgyj.
lowIndex = j; : bq8N@P/
} Hd ={CFip
} A[{yCn`tM
SortUtil.swap(data,i,lowIndex); u^I|T.w<r6
} <^jQo<kU
} /{n-Y/jp
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} ^A&1^B
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Shell排序: G}raA%
Z0", !6nS
package org.rut.util.algorithm.support; R.1.)P[
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import org.rut.util.algorithm.SortUtil; 21l;\W
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/** Ka
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* @author treeroot #f]SK[nR
* @since 2006-2-2 s-Tv8goNV
* @version 1.0 ={&j07,*a
*/ H40p86@M
public class ShellSort implements SortUtil.Sort{ XK@E;Rv
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/* (non-Javadoc) 3;{kJQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mNTzUoZF'@
*/ ;'@9[N9
public void sort(int[] data) { 0=1T.4+=
for(int i=data.length/2;i>2;i/=2){ m&,(Jla
for(int j=0;j insertSort(data,j,i); `d`T*_
} ^Y \"}D
} d^
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insertSort(data,0,1); u `6:5k
} !z3jTv
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/** X5$ Iyis
* @param data xY(*.T9K
* @param j 6?Ji7F
* @param i E]-/Zbvdv
*/ >}i E(
private void insertSort(int[] data, int start, int inc) { nmKp[-5
int temp; _)m]_eS._
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0 /U{p,r6`
} K is"L(C
} h3
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} ?%[@Qb=2
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} `b7t4d*
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快速排序: ENs&RZ;
t-bB>q#3>
package org.rut.util.algorithm.support; A$0fKko
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import org.rut.util.algorithm.SortUtil; g1 "kTh
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/** ]Q)OL
* @author treeroot DsCcK3 k
* @since 2006-2-2 uz
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* @version 1.0 @`- 4G2IU}
*/ JP[K;/
public class QuickSort implements SortUtil.Sort{ y}ev ,j
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/* (non-Javadoc) JU&c.p
/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <6 Uf.u`
*/ r52gn(,
public void sort(int[] data) { 6mxfLlZ
quickSort(data,0,data.length-1); 00~mOK;1
} ~V1E0qdAE
private void quickSort(int[] data,int i,int j){ I:1C8*/
int pivotIndex=(i+j)/2; `7V]y-
file://swap M-Y_ Wb3
SortUtil.swap(data,pivotIndex,j); !wh8'X*
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int k=partition(data,i-1,j,data[j]); Q sCheHP
SortUtil.swap(data,k,j); B*Dz{a^.:
if((k-i)>1) quickSort(data,i,k-1); $5%SNzzl
if((j-k)>1) quickSort(data,k+1,j); ;+hH
1?+St`+{B-
} $}<e|3_
/** k>si5'W
* @param data mGg+.PFsM
* @param i i2SR{e8:GF
* @param j 5MJS
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* @return O5T{eBo\
*/ p}U ~+:v
private int partition(int[] data, int l, int r,int pivot) { Yufc{M00
do{ $suzW;{#
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U 0P~
SortUtil.swap(data,l,r); 1f=gYzuO)
} ":QZy8f9%
while(l SortUtil.swap(data,l,r); aHK}sr,U
return l; \d`h/tHk
} |[b{)s?x
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} kVLS
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改进后的快速排序: )|#sfHv7
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package org.rut.util.algorithm.support; ,/|T-Ka
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import org.rut.util.algorithm.SortUtil; {V
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/** ml
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* @author treeroot A_q3KB!$=+
* @since 2006-2-2 U9MxI%tb
* @version 1.0 oE]QF.n#
*/ AFE~
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public class ImprovedQuickSort implements SortUtil.Sort { G2:
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private static int MAX_STACK_SIZE=4096; _u QOHwn
private static int THRESHOLD=10; 8&b,qQ~
/* (non-Javadoc) <x>Mo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) or}[h09qA
*/ Z=vU}S>r|v
public void sort(int[] data) { aWF655Fs*
int[] stack=new int[MAX_STACK_SIZE]; IyG}H}
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int top=-1; nUOz\y
int pivot; xdkZdx>N
int pivotIndex,l,r; T{[=oH+
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stack[++top]=0; ]>Es4 s
stack[++top]=data.length-1; <frutU16\
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while(top>0){ ge8ZsaiU
int j=stack[top--]; Wdbed U~`Q
int i=stack[top--]; .3Oap*X
a<bwzX|.
pivotIndex=(i+j)/2; T1=fNF
pivot=data[pivotIndex]; d>qY{Fdz
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SortUtil.swap(data,pivotIndex,j); &&>ekG9@
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file://partition Wg]Qlw`\|
l=i-1; 9CD_os\h
r=j; H$UcF1k<
do{ C1 *v,i
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
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SortUtil.swap(data,l,r); ln
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} ^^D0^k!R
while(l SortUtil.swap(data,l,r); >tW#/\x{
SortUtil.swap(data,l,j); sLxc(d'A
o|["SYIf
if((l-i)>THRESHOLD){ gc$l^`+M
stack[++top]=i; O3kA;[f;
stack[++top]=l-1; hM@>q&q_
} X45%e!
if((j-l)>THRESHOLD){ -6B4sZpzD
stack[++top]=l+1; r mg}N
stack[++top]=j; +T Dw+
} H"WprHe
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} XlR@pr6tw
file://new InsertSort().sort(data); o!A+&{
insertSort(data); E hMNap}5"
} '/s)%bc
/** Jdj4\ju
* @param data s!$7(Q86R
*/ #S"nF@
private void insertSort(int[] data) { f._ua>v,f
int temp; ^k9I(f^c-_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {3aua:q
} H9e<v4c
} {R6ZKB
} #AQV(;r7@
8bld3p"^
} 0n{=%Q
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归并排序: ZPYS$Ydy
6T`i/".
package org.rut.util.algorithm.support; bOY |H~
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import org.rut.util.algorithm.SortUtil; i=2N;sAl
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/** }0Ed]
* @author treeroot e$rZ5X
* @since 2006-2-2 l,5+@i`5i
* @version 1.0 t*w/{|yO
*/ 7-fb.V9
public class MergeSort implements SortUtil.Sort{ }@d @3
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/* (non-Javadoc) }k.Z~1y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ncT&Gr
*/ *\F~[
public void sort(int[] data) { d%n-[ZL
int[] temp=new int[data.length]; X!EP$!
mergeSort(data,temp,0,data.length-1); 8YSAf+{FtK
} R0*|Lo$6
X#^[<5
private void mergeSort(int[] data,int[] temp,int l,int r){ Slc\&Eb
int mid=(l+r)/2; om:VFs\U
if(l==r) return ; }Jj}%XxKs
mergeSort(data,temp,l,mid); nAlQ7'
mergeSort(data,temp,mid+1,r); +mT_QsLEv
for(int i=l;i<=r;i++){ |+D!=
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temp=data; a9Zq{Ysj
} FfT`;j
int i1=l; ]Zh%DQ
int i2=mid+1; SOA,kwHRe
for(int cur=l;cur<=r;cur++){ 5\VWC I
if(i1==mid+1) c@L< Z` u
data[cur]=temp[i2++]; ~((O8@}J
else if(i2>r) {]4LULq
data[cur]=temp[i1++]; sK?twg;D*|
else if(temp[i1] data[cur]=temp[i1++]; HJ.-Dg5U
else KHvYUTY
data[cur]=temp[i2++]; 5]:U9ts#
} j^RmrOg,
} JNnDts*w
dioGAai'
} (KZ{^X?a
gw<q.XL
改进后的归并排序: $VOFOc
xr^LFn)
package org.rut.util.algorithm.support; 5wU]!bxr
8P\Zo8}v
import org.rut.util.algorithm.SortUtil; `C'H.g\>2Q
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/** QS;f\'1bb
* @author treeroot +]{G@pn
* @since 2006-2-2 &s>Jb?_5Mx
* @version 1.0 S)"Jf?
*/ b^vQpiz
public class ImprovedMergeSort implements SortUtil.Sort { )Hr`MB
YKK*ER0
private static final int THRESHOLD = 10; XC#oB~K'
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/* ]\HvK CN}
* (non-Javadoc) /&JT~M
* "qy,*{~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +k R4E23:
*/ qwAT>4
public void sort(int[] data) { 9QJyZ
int[] temp=new int[data.length]; 4Ftu
mergeSort(data,temp,0,data.length-1); N!tX<u~2
} R[+<^s}p/
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private void mergeSort(int[] data, int[] temp, int l, int r) { k$:|-_(w
int i, j, k; t4-[Z$n5
int mid = (l + r) / 2; )NT*bLRPQ
if (l == r) (A.C]hD
return; h'nY3GrU
if ((mid - l) >= THRESHOLD) EU Fa5C:
mergeSort(data, temp, l, mid); 6j|{`Zd)G
else j3ls3H&
insertSort(data, l, mid - l + 1); 0jWVp-y
if ((r - mid) > THRESHOLD) 4E}Yt$|
mergeSort(data, temp, mid + 1, r); as=fCuJ
else "_?nN"A7
insertSort(data, mid + 1, r - mid); pEz_qy[#
_+3::j~;m
for (i = l; i <= mid; i++) { 0JujesUw(
temp = data; Zx>=tx}
} "Z+k=~(
for (j = 1; j <= r - mid; j++) { S$-7SEkO+
temp[r - j + 1] = data[j + mid]; j<e2d7oN
} 8zq=N#x
int a = temp[l]; [{/jI\?v
int b = temp[r]; #,'kXj
for (i = l, j = r, k = l; k <= r; k++) { )D%~`,#pQ
if (a < b) { @IZnFHN
data[k] = temp[i++]; u9p$YJ
a = temp; j![\& z
} else { ql~J8G9
data[k] = temp[j--]; u_Z+;{]Pj
b = temp[j]; e&>2
n
} F_P~x(X
} 3o/[t
} :[d9tm
/G`]=@~
/** ZWm6eD
* @param data xN'I/@ kb
* @param l a?oI>8*
* @param i &uVnZ@o42
*/ ;qV>L=a
private void insertSort(int[] data, int start, int len) { iK;XZZ(
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w&.aQGR#
} Gav$HLx
} h;'~,xA
} 0b 54fD=
} x.4m|f0;
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堆排序: 3PF_H$`oJ
V|R,!UND
package org.rut.util.algorithm.support; \z ) %$#I
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import org.rut.util.algorithm.SortUtil; ?gXp*>Kg[
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/** ue>D7\8
* @author treeroot /g.U&oI]D
* @since 2006-2-2 .fs3>@T"#
* @version 1.0 7uk[Oy<_
*/ UC$ppTCc?
public class HeapSort implements SortUtil.Sort{ "ocyK}l.?
zKK9r~ M
/* (non-Javadoc) b~cZS[S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l%=;
*/ MpOc
public void sort(int[] data) { V]?R>qhgu
MaxHeap h=new MaxHeap(); l}P=/#</T
h.init(data); |1Z)E+q*:
for(int i=0;i h.remove(); 3__-nV
System.arraycopy(h.queue,1,data,0,data.length); /zox$p$?h
} EiaW1Cs
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private static class MaxHeap{ ,/U6[P_C5
dD@(z:5M\
void init(int[] data){ J9 I:Q<;
this.queue=new int[data.length+1]; _(zG?]y0P
for(int i=0;i queue[++size]=data; G KeU%x
fixUp(size); 4 H&#q>
} DW3G
} og>uj>H&
4I(Xy]wm
private int size=0; CNx8]
_2
BL4-7
private int[] queue; -7|H}!DFT
|V7*l1
public int get() { 4b`=>X;W
return queue[1]; .eC1qWZJpd
} UL9n-M=
,]/X\t5]D
public void remove() { TJ*T:?>e
SortUtil.swap(queue,1,size--); ;9'OOz|+1
fixDown(1); . 'yCw#f
} $`'/+x"%
file://fixdown ^/k*h J{
private void fixDown(int k) { :2)/FPL6
int j; d0 /#nz
while ((j = k << 1) <= size) { Z #m+ObHK1
if (j < size %26amp;%26amp; queue[j] j++; .o}v#W+st
if (queue[k]>queue[j]) file://不用交换 G]aOHJ:.
break; kvj#c
SortUtil.swap(queue,j,k); U`s{Jm
k = j; 3= ;<$+I6
} R/a*LSe@&
} (4-CF3D
private void fixUp(int k) { tZB<on<.)
while (k > 1) { (uidNq
int j = k >> 1; )=-szJjXZ
if (queue[j]>queue[k]) BD7Ni^qI$
break; S`]k>'
l
SortUtil.swap(queue,j,k); a-J.B.A$Z/
k = j; Yz93'HDB
} ?Ss!e$jf
} h@wgd~X9
Z5]>pJFq,
} r,2g^K)6
rQ snhv
} BfiD9ka-z
Ssg&QI
SortUtil: YZJyk:H\
9-m=*|p
package org.rut.util.algorithm; GsM<2@?
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import org.rut.util.algorithm.support.BubbleSort; ,MIV=*
import org.rut.util.algorithm.support.HeapSort; 7 Fsay+a
import org.rut.util.algorithm.support.ImprovedMergeSort; @9|hMo
import org.rut.util.algorithm.support.ImprovedQuickSort; PeEj&4k
import org.rut.util.algorithm.support.InsertSort; U,1-A=Og{o
import org.rut.util.algorithm.support.MergeSort; ={Qi0Pvt
import org.rut.util.algorithm.support.QuickSort; |
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import org.rut.util.algorithm.support.SelectionSort; IO:G1;[/2L
import org.rut.util.algorithm.support.ShellSort; FML(4BY,
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/** ( &x['IR
* @author treeroot bi;1s'Y<D
* @since 2006-2-2 g<
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* @version 1.0 13/]DF,S"^
*/ Ny)X+2Ae
public class SortUtil { C+&l<
fM&
public final static int INSERT = 1; Eu04e N
public final static int BUBBLE = 2; seeBS/%
public final static int SELECTION = 3; ZqO^f*F>h
public final static int SHELL = 4; 18:%~>.!
public final static int QUICK = 5; 0+b1vhQ
public final static int IMPROVED_QUICK = 6; FHI ;)wn=
public final static int MERGE = 7; ,5<Cd,`*
public final static int IMPROVED_MERGE = 8; .(2ik5A%9
public final static int HEAP = 9; 3"\l u?-E
Pj%|\kbNs
public static void sort(int[] data) { %D "I
sort(data, IMPROVED_QUICK); 'H <\x
} Pg7Yp2)Oli
private static String[] name={ x]ot 2
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &b& ,
}; E8&TO~"a]e
y4fdq7i~}9
private static Sort[] impl=new Sort[]{ 9=2$8JN=(l
new InsertSort(), 0_t!T'jr7
new BubbleSort(), b>JDH1)
new SelectionSort(), qJUK_6|3
new ShellSort(), y:l\$pGC%
new QuickSort(), {.mngRQF
new ImprovedQuickSort(), $ L]lHji
new MergeSort(), ~61v5@
new ImprovedMergeSort(), ~W]TD@w
new HeapSort() +=8VTCn?
}; FaJ &GOM,
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public static String toString(int algorithm){ z2>lI9D4V
return name[algorithm-1]; `*KHSA
} jRV/A!4
v|2T%y_
u
public static void sort(int[] data, int algorithm) { N ZSSg2TX#
impl[algorithm-1].sort(data); =w0R$&b&
} :*\P n!r
bA->{OPkT
public static interface Sort { 45>?o
public void sort(int[] data); Yg1X
} !g2+w$YVa
sD wqH.L
public static void swap(int[] data, int i, int j) { lHX72s|V
int temp = data; 8}UIbF
data = data[j]; b|W=pSTY
data[j] = temp; f&
'
} N] sAji*
} ?FcAXA/J{