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。 X+?Il)Bv
插入排序: glOqft&>`
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package org.rut.util.algorithm.support; XwKZv0ub
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import org.rut.util.algorithm.SortUtil; tu?Z@W/
/** -Fp!w "=T
* @author treeroot oP43 NN~
* @since 2006-2-2 :Ul'(@
* @version 1.0 CYTuj>Ww
*/ !:g>CDA
public class InsertSort implements SortUtil.Sort{ Y:tW]
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/* (non-Javadoc) YYZs#_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EyKkjEXx_
*/ *<|~=*Ddf
public void sort(int[] data) { onWYT} c{
int temp; pAUfG^v
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +[X.-,yW
} 2m)kyQ
} Y1yvI
} $~w@0Yl
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} xy-$v
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冒泡排序: G>_42Rp
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package org.rut.util.algorithm.support; pR@GvweA
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import org.rut.util.algorithm.SortUtil; Xd19GP!
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/** : e0R7sj
* @author treeroot G]m[S-
* @since 2006-2-2 Y7b,td1
* @version 1.0 ;S{Ld1;
*/ ]$?zT`>(F
public class BubbleSort implements SortUtil.Sort{ m"?'hR2
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/* (non-Javadoc) A^= Hu,"e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U:pLnNp`
*/ Vx\#+)4
public void sort(int[] data) { C,VqT6E<
int temp; O_s9
for(int i=0;i for(int j=data.length-1;j>i;j--){ b Q9"GO<X
if(data[j] SortUtil.swap(data,j,j-1); WW8YB"
} 6/V{>MTZg
} bz}AO))Hk
} 3
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} l b1sV
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} a?U%l 9F
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选择排序: >r4Y\"/j
KOAz-h@6
package org.rut.util.algorithm.support; XCqfAcNQ
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import org.rut.util.algorithm.SortUtil; sGDrMAQt
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/** DoCQFSL
* @author treeroot ?O.6 r"
* @since 2006-2-2 mn6p s6OB
* @version 1.0 qu#@F\gX
*/ q=E}#[EgY
public class SelectionSort implements SortUtil.Sort { v%l|S{>(
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/* O+8ApicjTc
* (non-Javadoc) [ ;3EzZL
* jQK2<-HZ3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0t:|l@zB
*/ _uy5?auQ
public void sort(int[] data) { |V~(mS747:
int temp; 7,&]1+n
for (int i = 0; i < data.length; i++) { Lct+cKKU
int lowIndex = i; }v(H
E%~}
for (int j = data.length - 1; j > i; j--) { \.{pZMM
if (data[j] < data[lowIndex]) { [}xIg8
lowIndex = j; <+i`W7
} g:HbmXOBpj
} %f3Nml
SortUtil.swap(data,i,lowIndex); tWX+\ |
} b#\kZ/W
} -~Z@,
i$LV44
} [(e`b
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Shell排序: m?R+Z6c[
sVm'9k
package org.rut.util.algorithm.support; ;uWIl
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import org.rut.util.algorithm.SortUtil; ~V$5 m j
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/** ow>[#.ua
* @author treeroot yn ?U7`V
* @since 2006-2-2 "6Hjji@A
* @version 1.0 hoD[wAC
*/ .n|3A3:
public class ShellSort implements SortUtil.Sort{ WG[0$j
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/* (non-Javadoc) .D2ub/er
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1
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*/ [ Xo
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public void sort(int[] data) { gu.))3D9
for(int i=data.length/2;i>2;i/=2){ *.;}OX^X
for(int j=0;j insertSort(data,j,i); Y @ ,e
} ])ZJ1QL1
} BKjPmrZ|
insertSort(data,0,1); ewff(e9
} 2Z1(J% 7
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/** z )}wo3
* @param data 8'_
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* @param j VTX'f2\
* @param i ,vY
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*/ B xN#Nk~
private void insertSort(int[] data, int start, int inc) {
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int temp; 1MzB?[gx
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eEds-&_
} WE8L?55_Au
} Z(`K6`KM
} Z_ *ZUN?B
w7ABnX
} "@'9+$i6
; >hPHx
快速排序: >a]
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package org.rut.util.algorithm.support; oO9iB:w
PL B=%[
import org.rut.util.algorithm.SortUtil; K]azUK7
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/** #(}_2x5
* @author treeroot ewlc ^`
* @since 2006-2-2 Q^5 t]HKn
* @version 1.0 &7y1KwfXn
*/ WRyv
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public class QuickSort implements SortUtil.Sort{ 7&U+f:-w
E^>7jf09,
/* (non-Javadoc) L$07u{Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vblf6qaBs
*/ 5suSR;8
public void sort(int[] data) { hdDI%3vk3
quickSort(data,0,data.length-1); O#Ax P}
} ]$k
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private void quickSort(int[] data,int i,int j){ gGz_t,=
int pivotIndex=(i+j)/2; [8g\pPQ
file://swap !~DkA7i 55
SortUtil.swap(data,pivotIndex,j); i*rv_G|(Zj
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int k=partition(data,i-1,j,data[j]); w5G34[v
SortUtil.swap(data,k,j); vP;tgW9Qk
if((k-i)>1) quickSort(data,i,k-1); -kS5mR
if((j-k)>1) quickSort(data,k+1,j); T//+&Sk[
j
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} G!lykk]
/** /u1zRw
* @param data GnHf9
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* @param i Z"&ODVP
* @param j wx7>0[ zE
* @return <5L` d}
*/ @)B5^[4(;
private int partition(int[] data, int l, int r,int pivot) { 5N}|VGN
do{ 0
#;
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
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SortUtil.swap(data,l,r); {*
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} RR {9
while(l SortUtil.swap(data,l,r); 2MrR|hLx
return l; "tbBbEj?d
} f*f9:xUY
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} 9K_HcLO%y
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改进后的快速排序: b<MMli
;{u#~d}
package org.rut.util.algorithm.support; (
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import org.rut.util.algorithm.SortUtil; {-Oc8XI/
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/** c=mFYsSv
* @author treeroot 4h@of'
* @since 2006-2-2 g5]DA.&(
* @version 1.0 *\5H\s9<
*/ blS4AQ?b^
public class ImprovedQuickSort implements SortUtil.Sort { A}}t86T
O$ oN1
private static int MAX_STACK_SIZE=4096; ;L{y3CWT
private static int THRESHOLD=10; ?AH<y/i<Y
/* (non-Javadoc) Yhdt8[ 2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N^>g=Ub
*/ 3Sb%]f5(
public void sort(int[] data) { :zZM&r>
int[] stack=new int[MAX_STACK_SIZE]; z>q_]U0
F=lj$?4{
int top=-1; 5Ww\h
int pivot; 4}b:..Ku
int pivotIndex,l,r; +DDvM;31w
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stack[++top]=0; hkm3\wg
stack[++top]=data.length-1; U4/$4.'NQ
`OK
}q
while(top>0){ 7E]l=Z`x
int j=stack[top--]; p#I1l2nE
int i=stack[top--]; 7m$/.\5
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.
pivotIndex=(i+j)/2; aesFv)5DK
pivot=data[pivotIndex]; BF#e=p
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SortUtil.swap(data,pivotIndex,j); Y`Rf E
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file://partition Gj0NN:
l=i-1; 11'Tt!
r=j; 6<GWDO
do{ q3:'
69
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Mqy`j9FbL
SortUtil.swap(data,l,r); *GMRu,u2
} e$h\7i:(
while(l SortUtil.swap(data,l,r); 1A
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SortUtil.swap(data,l,j); =ye}IpC*M
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if((l-i)>THRESHOLD){ hWJc
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stack[++top]=i; IVKE dwA
stack[++top]=l-1; #,pLVt<
}
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if((j-l)>THRESHOLD){ C<)&qx3
stack[++top]=l+1; Ved:w^
,
stack[++top]=j; F!<x;h(
} 8hY)r~!b'
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0 yt%qHE
} x]M1UBnMN
file://new InsertSort().sort(data); }9dgm[C[b
insertSort(data); DKH9O
} w[_Uv4M
/** _69\#YvCG
* @param data Q^OzFfR6
*/ e76)z;'
private void insertSort(int[] data) { )}8%Gs4C
int temp; _JXE/
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /J:j'6
} )$i3j
1[;
} D.}b<kDD
} :
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} v|z1nD!?]
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归并排序: ZvJx01F{
jTIn@Q
package org.rut.util.algorithm.support; ^~od*:
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import org.rut.util.algorithm.SortUtil; [8n4lE[)"
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/** Gz:a1-x
* @author treeroot S7*:eo
* @since 2006-2-2 5 Da(DA
* @version 1.0 [d}1Cq=_
*/ r+crE %-
public class MergeSort implements SortUtil.Sort{ #wfR$Cd
;'kH<Iq
/* (non-Javadoc) d0d2QRX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YVi]f2F%
*/ ,\b5M`<c
public void sort(int[] data) { dX*PR3I-3
int[] temp=new int[data.length]; !k)
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mergeSort(data,temp,0,data.length-1); *,u{~(thR
} BVDo5^&W
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5q[@N J
int mid=(l+r)/2; N 2\,6 <
if(l==r) return ; Hl51R"8o
mergeSort(data,temp,l,mid); H{If\B%1t
mergeSort(data,temp,mid+1,r); `7`iCYiTy
for(int i=l;i<=r;i++){ 191)JWfa
temp=data; c3+vtP&
} j.sf FS
int i1=l; !xSGZD=AD
int i2=mid+1; tFCeE=4%
for(int cur=l;cur<=r;cur++){ MG|NH0k
if(i1==mid+1) Bb6_['y
data[cur]=temp[i2++]; 2_p/1Rs
else if(i2>r) "#%T*c{Tf0
data[cur]=temp[i1++]; D
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else if(temp[i1] data[cur]=temp[i1++]; }N NyUwFa
else tQ"PCm
data[cur]=temp[i2++]; F/h)azcn
} Z q)A"'Y
} n$>H } #q
r QF%;
} :HC{6W`$
9S}PCAA;
改进后的归并排序: ` $}[np|
q%l<Hw6{z
package org.rut.util.algorithm.support; b1+Nm
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import org.rut.util.algorithm.SortUtil; {v(3[7
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/** ouujd~b+
* @author treeroot H3JWf
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* @since 2006-2-2 RAvV[QkT
* @version 1.0 e2>gQ p/
*/ 6xwC1V?:0t
public class ImprovedMergeSort implements SortUtil.Sort {
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private static final int THRESHOLD = 10;
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/* 0>vm&W<?)
* (non-Javadoc) ke0Vy(3t{h
* {az8*MR=X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~dv
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*/ I aW8
public void sort(int[] data) { ?AR6+`0
int[] temp=new int[data.length]; 4&tY5m>
mergeSort(data,temp,0,data.length-1); )<+Z,6
}
X@B+{IFC
vg<_U&N=-r
private void mergeSort(int[] data, int[] temp, int l, int r) { l ^{]pD
int i, j, k; u >x2
int mid = (l + r) / 2; R]dc(D
if (l == r)
U7O2. y+
return; sf%=q$z
if ((mid - l) >= THRESHOLD) LGK}oL'
mergeSort(data, temp, l, mid); xZ .:H&0G
else zk?lNs
insertSort(data, l, mid - l + 1); sD
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if ((r - mid) > THRESHOLD) ;kdJxxUox
mergeSort(data, temp, mid + 1, r); "p<f#s}
else +K&ze:-Z
insertSort(data, mid + 1, r - mid); w\a\I
K}6}Opr,Tt
for (i = l; i <= mid; i++) { _uDtRoI8
temp = data; x\)-4w<P
} kj>XKZL10
for (j = 1; j <= r - mid; j++) { ?P}7AF
A(W
temp[r - j + 1] = data[j + mid]; Q16RDQ*
} lgU7jn
int a = temp[l]; H}A67J9x
int b = temp[r]; Oa{M9d,l
for (i = l, j = r, k = l; k <= r; k++) { ]^dXB0
if (a < b) { T2k5\r8
data[k] = temp[i++]; bBGLf)fsTG
a = temp; 4!D!.t~r
} else { a&j
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data[k] = temp[j--]; g8^ $,
b = temp[j]; qz?9:"~$C
} LqW~QEU(
} \SyfEcSf2v
} nlh%O@,
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/** pj'Yv
* @param data ="MG>4j3.F
* @param l zvE]4}VL?
* @param i n{|~x":9V
*/ "@.hz@>
private void insertSort(int[] data, int start, int len) { Yf|+p65g
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); iX}EJD{f
} Nq-qks.&
} >[NNu Y~
} ZM0vB% M|
} "H6DiPh.E
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堆排序: L ej3? k
sOv:/'
package org.rut.util.algorithm.support; %<P&"[F]v@
^dRB(E}|)
import org.rut.util.algorithm.SortUtil; ~r+;i,,X
kz] qk15w
/** _HGbR/
* @author treeroot A=>%KQc?
* @since 2006-2-2 pf[bOjtR
* @version 1.0 aR+vY1d"
*/ uPt({H
public class HeapSort implements SortUtil.Sort{ 8KN0z<
^C_ ;uz
/* (non-Javadoc) V4iN2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0jG8Gmh!
*/ Z+JPxe#7
public void sort(int[] data) { "RiY#=}sm
MaxHeap h=new MaxHeap(); @} qMI
h.init(data); IOomBy:
for(int i=0;i h.remove(); wm_xH_{F
System.arraycopy(h.queue,1,data,0,data.length); Dhv ^}m@
} s@V4ny9x
~Cm_=[
private static class MaxHeap{ `|+!H.3
Zg_ fec~6q
void init(int[] data){ k,OP*M
this.queue=new int[data.length+1]; V& _
for(int i=0;i queue[++size]=data; &i$p5
fixUp(size); LS
<\%A}
} m?0caLw<
} OjFB_
N
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private int size=0; "`s{fy~mV
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private int[] queue; t,Ss3
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public int get() { nF`_3U8e
return queue[1]; 16Cd0[h?
} c<fl6o)
\AQ*T`Dq
public void remove() { B _k+Oa2!
SortUtil.swap(queue,1,size--); ,=jwQG4wq
fixDown(1); bdbTK8-
} t}w<xe
file://fixdown ~U}0=lRVS
private void fixDown(int k) { a'r8J~:jy
int j; usc"m huQ
while ((j = k << 1) <= size) { n|q$=jE
if (j < size %26amp;%26amp; queue[j] j++; clyZD`*
if (queue[k]>queue[j]) file://不用交换 v)1@Ew=Y%
break; ;auT!a~a#
SortUtil.swap(queue,j,k); 6 b-'Hu i+
k = j; wkc)2z
} Y#7sDd!N|
} =jz [}5
private void fixUp(int k) { )jm!bR`
while (k > 1) { N.(wR
int j = k >> 1; -Ph"#R&
if (queue[j]>queue[k]) bS7%%8C
break; @?e+;Sx
SortUtil.swap(queue,j,k); k}18
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k = j; ld
} Bre:_>*
} C( wZjO?N
Bc&Y[u-n
} J@$KF GUs
= Zi'L48
} 1#}}:
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6
SortUtil: [SJ3FZ<
jEu-CU#:
package org.rut.util.algorithm; o&-D[|E|
qg1tDN`s
import org.rut.util.algorithm.support.BubbleSort; r|av|7R
import org.rut.util.algorithm.support.HeapSort; zPm|$d
import org.rut.util.algorithm.support.ImprovedMergeSort; `]F}O \H
import org.rut.util.algorithm.support.ImprovedQuickSort; CT{mzC8
import org.rut.util.algorithm.support.InsertSort; gUGMoXSTI|
import org.rut.util.algorithm.support.MergeSort; f9$8$O
import org.rut.util.algorithm.support.QuickSort; d
RIu A)0s
import org.rut.util.algorithm.support.SelectionSort; <~z@GMQCf
import org.rut.util.algorithm.support.ShellSort; 40=*Ul U-
*{x8@|K8
/** 7/e25LS!`U
* @author treeroot $&Lw 2 c0
* @since 2006-2-2 <]Btx;}
* @version 1.0 B}fd#dr
*/ Fzmc#?
public class SortUtil { .VXadgM
public final static int INSERT = 1; pddumbp
public final static int BUBBLE = 2; ,4mb05w;d
public final static int SELECTION = 3; #kQ1,P6,(
public final static int SHELL = 4; >lkjoEVQ
public final static int QUICK = 5;
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public final static int IMPROVED_QUICK = 6; H"NBjVRU%
public final static int MERGE = 7; JCjV,
public final static int IMPROVED_MERGE = 8; cB0"vbdO
public final static int HEAP = 9; -J":'xCP!
Lrjp
public static void sort(int[] data) { z"\<GmvB
sort(data, IMPROVED_QUICK); _J&IL!S2
} >c)-o}bd^
private static String[] name={ ^UmhSxQ##
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" NjFlV(XT}
}; ] kdU]}z
+OaBA>Jh9
private static Sort[] impl=new Sort[]{ gY {/)"
new InsertSort(), U _sM==~
new BubbleSort(), }Jo}K)>!
new SelectionSort(), EG!Nsb^,
new ShellSort(), TUN6`/"
new QuickSort(), Yij_'0vZ
new ImprovedQuickSort(), 3w&Z:<
new MergeSort(), 6GMwB@ b
new ImprovedMergeSort(), s:xt4<
new HeapSort() nTv^][
}; &8HJ4Vj2
+8}8b_bgH
public static String toString(int algorithm){ }xJ!0<Bs
return name[algorithm-1]; @{@DGc
} ~Dbu;cqR@
RPw1i*
public static void sort(int[] data, int algorithm) { ("s!t?!&YS
impl[algorithm-1].sort(data); h'B0rVQia>
} Z x&= K"
$C
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public static interface Sort { ef K
WR
public void sort(int[] data); C]a iu
} 09 vm5|
R^6]v`j;
public static void swap(int[] data, int i, int j) { \SooIEl@
int temp = data; PG{"GiZz=
data = data[j]; )uO 3v
data[j] = temp; E?h'OR@_ L
} 5Z>+NKQ
} ZMEYF!jN