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。 pMM-LY7%{
插入排序: &ME[H
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package org.rut.util.algorithm.support; @Ytsb!!
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import org.rut.util.algorithm.SortUtil; G'q7@d{'
/** ]^Z7w`=%5
* @author treeroot \K9XG/XIx
* @since 2006-2-2 W%hdS<b
* @version 1.0 ?|Fu^eR%X
*/ 2GLq#")P
public class InsertSort implements SortUtil.Sort{ 9-eYCg7C|
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/* (non-Javadoc) r.**
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UTc$zc7
*/ HUr;ysw
public void sort(int[] data) { 64z9Yr@
int temp; L.$9ernVY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MI0'ou8l
} s<5q%5ix3
} SE)_5|k*
} EC&t+"=R
{ cnya*
} x~!B.4gT2
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冒泡排序: cv eTrY}g
X ~%I(?OX
package org.rut.util.algorithm.support; ^*"&e\+p
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import org.rut.util.algorithm.SortUtil; $TU=^W)X
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/** d*,% -Io
* @author treeroot #R4Mv(BG
* @since 2006-2-2 TDBWYppM
* @version 1.0 #`RYKQwB
*/ jy(,^B,]
public class BubbleSort implements SortUtil.Sort{ *#;8mM
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/* (non-Javadoc) i:Pg&474f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qh%/{6(u
*/ 'Y(#Yxc
public void sort(int[] data) { Zq~2 BeB
int temp;
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for(int i=0;i for(int j=data.length-1;j>i;j--){ |Yh-`~~A"
if(data[j] SortUtil.swap(data,j,j-1); $SSE\+|3
} >"jV8%!sM
} au9r)]p-
} >aW|W!.
} il<D e]G
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} Dx$74~2e
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选择排序: #pBAGm3
@g9j+DcU
package org.rut.util.algorithm.support; 2`+ ?s
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import org.rut.util.algorithm.SortUtil; `~UCWK
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/** }oYR.UH
* @author treeroot N[^%|
* @since 2006-2-2 9Re605xQ6
* @version 1.0 d8<Lk9H9R
*/ bv;&oc:r
public class SelectionSort implements SortUtil.Sort { 6#T?g7\pyR
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/* E"!9WF(2t5
* (non-Javadoc) ?=jmyDXH!
* b5Rjn1@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Rv}L' L
*/ ?Pw#!t
public void sort(int[] data) { V[wEn9
int temp; H1| -f]!
for (int i = 0; i < data.length; i++) { :{h,0w'd
int lowIndex = i; $ ;>,
for (int j = data.length - 1; j > i; j--) { J9)wt ?%j
if (data[j] < data[lowIndex]) { =vT3SY
lowIndex = j; n}
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} :>nk63V (
} ioi0^aM
SortUtil.swap(data,i,lowIndex); VxjEKc
} 1@yXVD/
} '&Q_5\Tn
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} HQ7-,!XO
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Shell排序: tirw{[X0n
[T"oqO4%]
package org.rut.util.algorithm.support; ^8.R 'Yq
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import org.rut.util.algorithm.SortUtil; l"}W $3]u$
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/** %83PbH
* @author treeroot u9:;ft{}N
* @since 2006-2-2 'Vy$d<@s[
* @version 1.0 reM%GU
*/ fbB(WE+
public class ShellSort implements SortUtil.Sort{ |4-c/@D.~
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/* (non-Javadoc) uQ&&?j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -}{\C]%
*/ cmt3ceCb
public void sort(int[] data) { .Y_RI&B!L
for(int i=data.length/2;i>2;i/=2){ tH5f;mY,
for(int j=0;j insertSort(data,j,i); \@pl:Os
} 00U8<~u
} Xa*52Q`_
insertSort(data,0,1); T=VVK6Lc:
} )jR:\fe
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/**
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* @param data 9V zk:zOT
* @param j s.1(- "DU
* @param i ;s"m*
4N
*/ u):z1b3*?
private void insertSort(int[] data, int start, int inc) { pTGq4v@6x
int temp; qw%4j9}
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); NxNR;wz>l
} @MtF^y
} uWx/V+w
} <^R\N#
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} (z2)<_bXJ
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快速排序: (S5'iksx
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package org.rut.util.algorithm.support; }O2hhh_
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import org.rut.util.algorithm.SortUtil; 4E4o=Z|K
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/** 7Yk6C5C
* @author treeroot UbC)XiO
* @since 2006-2-2 85"DS-+e
* @version 1.0 dAEz
hR[=
*/ /,Ln)?eD
public class QuickSort implements SortUtil.Sort{ ]_d(YHYf
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/* (non-Javadoc) `U2PlCf|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /nb(F h|{T
*/ 3(^9K2.s}
public void sort(int[] data) { lxbbyy25
quickSort(data,0,data.length-1); PwF}yxkI
} Ng'f u|
private void quickSort(int[] data,int i,int j){ -jC. dz
int pivotIndex=(i+j)/2; WRVKh
file://swap Fj 1/B0acS
SortUtil.swap(data,pivotIndex,j); '(2G qX!
|+!Jr_ By
int k=partition(data,i-1,j,data[j]); 4DuZF
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SortUtil.swap(data,k,j); En5Bsz!
if((k-i)>1) quickSort(data,i,k-1); m|24)%Vj;=
if((j-k)>1) quickSort(data,k+1,j); t~5>PS
&`@,mUi{Ac
} !!2~lG<]
/** +R2
* @param data EoQ.d|:g
* @param i of+$TKQNpN
* @param j k B2+ Tr
* @return jf/;`br
*/ D-ug$ZRg
private int partition(int[] data, int l, int r,int pivot) { a2dF(H
do{ .4_~ku
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g'pE z
SortUtil.swap(data,l,r); =C`v+NPM)|
} rZJp>Q)s
while(l SortUtil.swap(data,l,r); G9E?
return l; g^B6NF
} M/UJb1<
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} iY;)R|6
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改进后的快速排序: Kwh3SU=L}
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package org.rut.util.algorithm.support; N1LR _vS"
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import org.rut.util.algorithm.SortUtil; ,wX/cUyZ
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/** E8%O+x}
* @author treeroot _$cQAH0 E
* @since 2006-2-2 1-w1k^e
* @version 1.0 Dm 'Q&
*/ 50_%Tl[
public class ImprovedQuickSort implements SortUtil.Sort { O "{o
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private static int MAX_STACK_SIZE=4096; B Am{Gb
private static int THRESHOLD=10; &]#D`u
/* (non-Javadoc) T+sO(;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tQ`tHe
*/ v`wPdb
public void sort(int[] data) { )j6S<mn
int[] stack=new int[MAX_STACK_SIZE]; 5fVdtJk7
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int top=-1; 3c9v~5og4
int pivot; &2QN^)q
int pivotIndex,l,r; rycscE4,
uO"@YX/
stack[++top]=0; i}HF
stack[++top]=data.length-1; w'L;`k;Q
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while(top>0){ {jk {K6 }
int j=stack[top--]; [;|g2\
int i=stack[top--]; pMX7Rl
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pivotIndex=(i+j)/2; X-n'?=
pivot=data[pivotIndex]; m1+DeXR_g
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SortUtil.swap(data,pivotIndex,j); !>>$'.nb@~
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file://partition ]&}?J:+?0E
l=i-1; E"V|Plf
c
r=j; 4=q\CK2 ^A
do{ (/qY*?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); J3q}DDnEo
SortUtil.swap(data,l,r); W:9L!+m^
} v[Ar{t&
while(l SortUtil.swap(data,l,r); a2).Az
SortUtil.swap(data,l,j); N18Zsdrp
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zV$
if((l-i)>THRESHOLD){ Yt|{l
stack[++top]=i; >TL0hBaaR
stack[++top]=l-1; VaQ}XM
} *RuUf
if((j-l)>THRESHOLD){ ky!'.3yoI
stack[++top]=l+1; /jS
stack[++top]=j; Cs*u{O
} {BKI8vy
:j9;P7&"?
} [=LQ,e$r7
file://new InsertSort().sort(data); mg#+%v
insertSort(data); 2RM0ca_F
} :SYg)|s
/** gVZ~OcB!W
* @param data 0|4XV{\qT$
*/ 66z1_lA
private void insertSort(int[] data) { %PkJ7-/b|^
int temp; Rjh/M`|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t%8*$"~X
} N'[^n,\(:
} `D?vmSQ
} (a)d7y.oo
kyY tL_SD
} RYvS,hf6z
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归并排序: /B1NcRS
r--"JO%2
package org.rut.util.algorithm.support; \&W~nYXq"
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import org.rut.util.algorithm.SortUtil; [kC-g @
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/** tSQ>P -O
* @author treeroot ?rr%uXQjH
* @since 2006-2-2 E@[`y:P
* @version 1.0 :r#FI".qx
*/ a2p<HW;)m
public class MergeSort implements SortUtil.Sort{ (wbG0lu
O<o_MZN
/* (non-Javadoc) &4BN9`|:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d3Y#_!)
*/ E5 Y92vu
public void sort(int[] data) { }0f[x ?V
int[] temp=new int[data.length]; DmD*,[rD
mergeSort(data,temp,0,data.length-1); =_v_#;h&
} T.&^1q WWA
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private void mergeSort(int[] data,int[] temp,int l,int r){ f+gyJ#R`
int mid=(l+r)/2; GS)l{bS#[O
if(l==r) return ; iyj&O"
mergeSort(data,temp,l,mid); ,gRsbC
mergeSort(data,temp,mid+1,r); WU}JArX9
for(int i=l;i<=r;i++){ 2Uk$9s
temp=data; mtJI#P
} \Dr@n^hk@[
int i1=l; lfWxdi
int i2=mid+1; *[_?4*F
for(int cur=l;cur<=r;cur++){ i<&2Ffvq
if(i1==mid+1) v( (fRX.`
data[cur]=temp[i2++]; *4+;Ey
else if(i2>r) BU])@~$
data[cur]=temp[i1++]; YFsEuaV
else if(temp[i1] data[cur]=temp[i1++]; m:
w/[|_
else :Fm+X[n
data[cur]=temp[i2++]; Pm;"Y!S<
} #ljfcQm
} Y+WOU._46I
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} +hKQha!*
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改进后的归并排序: #msk'MVt
=|uX?
package org.rut.util.algorithm.support; |QxDjL<&t4
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import org.rut.util.algorithm.SortUtil; # {!Qf\1M
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/** [\.
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* @author treeroot )S>~ h;
* @since 2006-2-2 B4&x?-0ZC
* @version 1.0 _RjM .
*/ '<8ewU
public class ImprovedMergeSort implements SortUtil.Sort { 9I9J}&4
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private static final int THRESHOLD = 10; ly6?jVJ
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/* ,R*ru*
* (non-Javadoc) .qF@
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* ]y!|x_5c3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _X;5ORH"
*/ W^al`lg+y
public void sort(int[] data) { 1kTJMtZG~
int[] temp=new int[data.length]; e
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mergeSort(data,temp,0,data.length-1); tQ] R@i
} 0$* z
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p
private void mergeSort(int[] data, int[] temp, int l, int r) { `<+D<x)(3
int i, j, k; hwkol W
int mid = (l + r) / 2; UGr7,+N&w
if (l == r)
voV=}.(p
return; ;>|:I(l;
if ((mid - l) >= THRESHOLD) ILTd*f
mergeSort(data, temp, l, mid); I)DLnnQQ
else j3z&0sc2(0
insertSort(data, l, mid - l + 1); Z\O ,9
if ((r - mid) > THRESHOLD) 4z[Z3|_V
mergeSort(data, temp, mid + 1, r); r"J1C
else USe"1(|E
insertSort(data, mid + 1, r - mid); K3'`!K a*
PX(Gx%s|
for (i = l; i <= mid; i++) { {"'W!WTb
temp = data; RH>b,
} H9nZ%n
for (j = 1; j <= r - mid; j++) { 9 `J `(
temp[r - j + 1] = data[j + mid]; s`GSc)AI
} * F~"4g
int a = temp[l]; nM)]
int b = temp[r]; ){R_o5
for (i = l, j = r, k = l; k <= r; k++) { ?$F:S%eH
if (a < b) { 0XL
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data[k] = temp[i++]; PS(9?rX#+
a = temp; :uhvDYp(-
} else { j[) i>Qw
data[k] = temp[j--]; z`5+BL,|ND
b = temp[j]; I+8m1*
} QTK\"
} >RE&>T^8
} <k}>eGn
D
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/** kw|bEL9!u
* @param data <hQ@]2w$
* @param l \L6U}ZQ2V
* @param i uZ%b6+(
*/ 6"eGd"
private void insertSort(int[] data, int start, int len) { B>#zrCD
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); >x&$lT{OY
} x\;`x$3t
} d<(1^Rto
} @wZ`;J %
} \f0I:%-
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堆排序: ~>xn9vb=
7Dom[f
package org.rut.util.algorithm.support; C6CX{IA]
@QVAsNW:O
import org.rut.util.algorithm.SortUtil; :#I8Cf
cd*y{Wt
/** $*8c0.{U
* @author treeroot F)5QpDmqb
* @since 2006-2-2 1H-R-NNJ:
* @version 1.0 RYS]b[-xZz
*/ JB''Ujyi
public class HeapSort implements SortUtil.Sort{ 9v0.]
=5I1[p;
/* (non-Javadoc) 6DR@$fpt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |PDuvv!.f
*/ hFj.d]S
public void sort(int[] data) { j$&k;S
MaxHeap h=new MaxHeap(); 9BNAj-Xa
h.init(data); [WX+/pm7>
for(int i=0;i h.remove(); X1#D}
System.arraycopy(h.queue,1,data,0,data.length); {3`#? q^o'
} B;hc|v{(
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private static class MaxHeap{ f9&D0x?
Mwp#.du(
void init(int[] data){ xgsD<3
this.queue=new int[data.length+1]; bq<QUw=]q&
for(int i=0;i queue[++size]=data; "p2 $R*ie
fixUp(size); v#YO3nD
} +*!oZKm.
} H&3VPag
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private int size=0; :[|`&_D9J
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private int[] queue; :]=Y1*L\)
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public int get() { W q F(
return queue[1]; g4RkkoZ>)
} |3Oe2qb
?ti7iBz?
public void remove() { } 9<aX
Y,
SortUtil.swap(queue,1,size--); |@Q(~[It
fixDown(1); .;iXe
} 4x e:+sA.N
file://fixdown `H+ 7Hj
private void fixDown(int k) { <s]K~ Vo
int j; ,^:Zf|V
while ((j = k << 1) <= size) { V{ra,a*
if (j < size %26amp;%26amp; queue[j] j++; H<X4R
if (queue[k]>queue[j]) file://不用交换 P}DrUND
break; L1P]T4a@)
SortUtil.swap(queue,j,k); =h5&\4r=
k = j; $-M1<?5
} J U}XSb
} W4|1wd}.t
private void fixUp(int k) { WI[6l6
while (k > 1) { 92+({ fgW
int j = k >> 1; %jqBYn0q'
if (queue[j]>queue[k]) E
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break; H6bomp"
SortUtil.swap(queue,j,k); V1xpJ
k = j; \
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} `:i|y
} K)l{3\9l|
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} Vy16Co
P,CJy|[L
} p
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*G'zES0x
SortUtil: @T?:[nPf&F
C.%iQx`
package org.rut.util.algorithm; ;# {XNq<1
]$y"|xqR
import org.rut.util.algorithm.support.BubbleSort; JjyQ
import org.rut.util.algorithm.support.HeapSort; { tim{nV
import org.rut.util.algorithm.support.ImprovedMergeSort; XMa(XOnX
import org.rut.util.algorithm.support.ImprovedQuickSort; gigDrf}
import org.rut.util.algorithm.support.InsertSort; >(`|oD`,Y
import org.rut.util.algorithm.support.MergeSort; #wx0xQ~,J
import org.rut.util.algorithm.support.QuickSort; 9]1-J5iO
import org.rut.util.algorithm.support.SelectionSort; uhQ3
import org.rut.util.algorithm.support.ShellSort; e`<=&w
vyN=X]p
/** f^:9gRt
* @author treeroot .fUqsq
* @since 2006-2-2 W-7yi`5
* @version 1.0 *ZKfyn$+~
*/ &p=|z2 J
public class SortUtil { F!c%&Z
public final static int INSERT = 1; _d
A-{
public final static int BUBBLE = 2; =WJ*$j(
public final static int SELECTION = 3; azF"tke
public final static int SHELL = 4; oopTo51,a
public final static int QUICK = 5; $T1
D
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public final static int IMPROVED_QUICK = 6; $-5iwZ
public final static int MERGE = 7; 8^c|9ow
public final static int IMPROVED_MERGE = 8; \1aj!)
public final static int HEAP = 9; VskyRxfdW3
pc^(@eD
public static void sort(int[] data) { Rj^bZ%t
sort(data, IMPROVED_QUICK); ,yAvLY5P
} Ga N4In[d
private static String[] name={ |+x;18
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" HTf7r-
}; vRn^n
,5t.0XqS
private static Sort[] impl=new Sort[]{ i\},
new InsertSort(), H.O7Y
new BubbleSort(), 7 82NiVed
new SelectionSort(), 7{."Y@
new ShellSort(), Z;7f
D
new QuickSort(), .IYOtS
new ImprovedQuickSort(), P[#V{%f*5
new MergeSort(), SZ1+h TY7d
new ImprovedMergeSort(), :g+R}TR[i
new HeapSort()
p,]Hs{R
}; /_o1b_1U
z=n"cE[KtB
public static String toString(int algorithm){ )-2OraUm<
return name[algorithm-1]; xI}]q%V
} n&FN?"I/]
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public static void sort(int[] data, int algorithm) { AM'-(x|
impl[algorithm-1].sort(data); -Ww'wH'2
} 3$(1LN
E-.M+[
public static interface Sort { 'S@h._q
public void sort(int[] data); QmbD%kW`3
} b==<7[8
7!Ym~M=
public static void swap(int[] data, int i, int j) { q:J,xC_sF(
int temp = data; j9x}D;?n
data = data[j]; }"Hf/{E$_"
data[j] = temp; pYceMZ$
} bYgrKz@uK
} 'JKFEUzM