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。 3Jf_3c
插入排序: {|bf`
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package org.rut.util.algorithm.support; GeD^-.^
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import org.rut.util.algorithm.SortUtil; FTsvPLIv"
/** w/#k.YE
* @author treeroot 0ERA(=w5
* @since 2006-2-2 Hcq?7_)
* @version 1.0 +"'cSAK
*/ qlNK }
public class InsertSort implements SortUtil.Sort{ xp.~i*!`
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/* (non-Javadoc) >$j?2,Za(V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K1Snag
*/ Q,S~+bD(z
public void sort(int[] data) { &Rdg07e;>
int temp; DY/xBwIF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \]1qAFB5
} |
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} FCgr
}
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冒泡排序: 4+"2K-]
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package org.rut.util.algorithm.support; sxkWg>
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import org.rut.util.algorithm.SortUtil; "H\1Z,P<m
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/** .5*5S[
* @author treeroot |mvY=t
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* @since 2006-2-2 /vO8s??
* @version 1.0 UEHJ?
}
*/ '-c
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public class BubbleSort implements SortUtil.Sort{ 2t
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/* (non-Javadoc) Sy()r 6n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n .is+2t
*/ n<q1itjD
public void sort(int[] data) { ~;$,h ET
int temp; c@f?0|66M
for(int i=0;i for(int j=data.length-1;j>i;j--){ C)Ep}eHjf_
if(data[j] SortUtil.swap(data,j,j-1); &Z'3n9zl
} F/p/&9
} w]1hoYuV
} v
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} k6eh$*!
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} t?1b(oJ
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选择排序: R|D%1@i]
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package org.rut.util.algorithm.support; '_ZiZ4O
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import org.rut.util.algorithm.SortUtil; Z=R 6?jU*n
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/** pTeN[Yu?
* @author treeroot [/=Z2mtA
* @since 2006-2-2 *RYok{w
* @version 1.0 3ch<a0
*/ t]gZ^5
public class SelectionSort implements SortUtil.Sort { ^iA_<@[`X[
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/* je;C}4
* (non-Javadoc) )WNw0cV}J>
* q!;u4J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;SgPF:T>Q
*/ _.%U}U
public void sort(int[] data) { E]O/'-
int temp; pJdR`A-k|
for (int i = 0; i < data.length; i++) { ;~,)6UX7
int lowIndex = i; NoOrQ m
for (int j = data.length - 1; j > i; j--) { YMn*i<m
if (data[j] < data[lowIndex]) { 3d`u!i?/
lowIndex = j; v?Zo5uVoq
} z[Ah9tM%
} =f?vpKq40
SortUtil.swap(data,i,lowIndex); ,Dab(
} :='I>Gn
} Nw*F1*v`
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} E[7E%^:Mg
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Shell排序: N:CQ$7T{ j
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package org.rut.util.algorithm.support; xjSzQ|k-
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import org.rut.util.algorithm.SortUtil; LuHRB}W
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/** alB'l
* @author treeroot }#-@5["-X
* @since 2006-2-2 "GR*d{
* @version 1.0 yXoNfsv
*/ )0/*j]Kf
public class ShellSort implements SortUtil.Sort{ 7{(UiQbf
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/* (non-Javadoc) a5R.
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S0Io$\ha
*/ ?wv^X`Q*~
public void sort(int[] data) { IC5QH<.$C
for(int i=data.length/2;i>2;i/=2){ G0|}s&$yL
for(int j=0;j insertSort(data,j,i); 4H(8BNgzV
} G<=I\T'g;
} h]L.6G|hEN
insertSort(data,0,1); $,J}w%A
} FwlDP
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/** 1Ml<>
* @param data jL8A_'3B
* @param j ~nhO*bs}7{
* @param i (oR~%2K
*/ AWi>(wk<
private void insertSort(int[] data, int start, int inc) { Gp
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int temp; /FE+WA}r
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A_\Jb}J1<
} bL`\l!qQx;
} k}F7Jw#.
} (3mL!1\
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} @2L^?*n=
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快速排序: E"_{S.Wc
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package org.rut.util.algorithm.support; :e=7=|@7
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import org.rut.util.algorithm.SortUtil; yna!L@ *@,
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/** =WUL%MfW
* @author treeroot p\6}<b"p
* @since 2006-2-2 ]T'8O`
* @version 1.0 yQUrHxm
*/ D{Nd2G
public class QuickSort implements SortUtil.Sort{ (kB
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/* (non-Javadoc) 5I2 h(Td
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fcEm:jEZ*
*/ HBR/" m
public void sort(int[] data) { )L6
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quickSort(data,0,data.length-1); :AFW= e@<
} M j[+h|e
private void quickSort(int[] data,int i,int j){ P8ej9ULX,
int pivotIndex=(i+j)/2; Bo8f52|
file://swap B=K<k+{6"
SortUtil.swap(data,pivotIndex,j); ^|.T\
*Vq'%b9
int k=partition(data,i-1,j,data[j]); !{CIP`P1
SortUtil.swap(data,k,j); r3U7`P
if((k-i)>1) quickSort(data,i,k-1); $peL1'Evo
if((j-k)>1) quickSort(data,k+1,j); gizY4~
j
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} \mGb|aF8
/** 5JVBDA^#om
* @param data 9 c9$cnQ
* @param i Gdb0e]Vt+
* @param j `Zo5!"'
* @return #aC&!Rei{
*/ c^1JSGv
private int partition(int[] data, int l, int r,int pivot) { V.u^;gr3
do{ .Qn#wub
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ym6Emf]
SortUtil.swap(data,l,r); #S/~1{
} n8!|}J
while(l SortUtil.swap(data,l,r); ~I>|f
return l; J+ :3==,
} xC _3&.
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} Ja*,ht(5
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改进后的快速排序:
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package org.rut.util.algorithm.support; \)\n5F:Zu
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import org.rut.util.algorithm.SortUtil; xP1D 9
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/** Uhh[le2 %
* @author treeroot fy>3#`T-
* @since 2006-2-2 mXJG &EA
* @version 1.0 x?{l<mc
*/ }W " i{s/
public class ImprovedQuickSort implements SortUtil.Sort { +gndW
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private static int MAX_STACK_SIZE=4096; b9.7j!W
private static int THRESHOLD=10; <]S
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/* (non-Javadoc) .ejC#vB{KM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %:l\Vhhz
*/ p,8:(|(
public void sort(int[] data) { 8_D:#i
int[] stack=new int[MAX_STACK_SIZE]; '2|mg<Ft
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int top=-1; ^JIs:\g<<
int pivot; p0Ij4
int pivotIndex,l,r; yyVJb3n5:!
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stack[++top]=0; * e,8o2C$
stack[++top]=data.length-1; 9ys[xOh
WM
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while(top>0){ [F *hjGLc}
int j=stack[top--]; v%c--cO(S4
int i=stack[top--]; JKYl
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pivotIndex=(i+j)/2; fk5pPm|MiL
pivot=data[pivotIndex]; ~ebm,3?
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SortUtil.swap(data,pivotIndex,j); S^e e<%-
^jo*e,y:
file://partition 1G, '
l=i-1; OOus*ooo2
r=j; tN;~.\TKg
do{ &eg@ZnPn
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); U3>ES"N
SortUtil.swap(data,l,r); ''EFh&F
} |2X+( F Ed
while(l SortUtil.swap(data,l,r); JHVesX
SortUtil.swap(data,l,j); HFj@NRE6
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if((l-i)>THRESHOLD){ );z/
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stack[++top]=i; 5=_))v<Tp
stack[++top]=l-1; 7tT L,Nxe
} 5m6I:s`pK
if((j-l)>THRESHOLD){ 6CWm;%B#G
stack[++top]=l+1; D
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stack[++top]=j; H]f8W]"c[
} 9[\$\l
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} \G]vTK3
file://new InsertSort().sort(data); 0_map z
insertSort(data); QW@`4W0F
} +@C|u'
/** Ba|76OBRJ
* @param data +Xr87x;
*/ O:O
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private void insertSort(int[] data) { v/7iu*u
int temp; &f>1/"lnd\
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q(YQ$i"S
} yy3-Xu4
} Jp`qE
} <~!R|5sK
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} )eSD5hOI)
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归并排序: o4pe>hn
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package org.rut.util.algorithm.support; uzUZuJ
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import org.rut.util.algorithm.SortUtil; P"mD73a
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/** `~3y[j]kO
* @author treeroot d_}q.%*
* @since 2006-2-2 o]*#|4-
* @version 1.0 b6UD!tXp
*/ R~DZY{u+/$
public class MergeSort implements SortUtil.Sort{ 9i+SU|;j
rYMHc@a9(
/* (non-Javadoc) )`.'QW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :vJ0Ypz-u
*/ RZ&T\;m,7
public void sort(int[] data) { A5> ,e|
int[] temp=new int[data.length]; VBK9te,A
mergeSort(data,temp,0,data.length-1); 6> Szxkz
} Jk!*j
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private void mergeSort(int[] data,int[] temp,int l,int r){ mxV0"$'Fm
int mid=(l+r)/2; k9<P]%
if(l==r) return ; tk
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mergeSort(data,temp,l,mid); wfxg@<WR
mergeSort(data,temp,mid+1,r); k/ 9S
for(int i=l;i<=r;i++){ +MfdZD
temp=data; #\]:lr{>?4
} do1aH$Iw
int i1=l; g0D(:_QXp:
int i2=mid+1; &u'$q
for(int cur=l;cur<=r;cur++){ 2Y@:Vgg
if(i1==mid+1) q-fxs8+m|
data[cur]=temp[i2++]; C&vUZa[p
else if(i2>r) 75LIQ!G|=
data[cur]=temp[i1++]; Je#vl4<L
else if(temp[i1] data[cur]=temp[i1++]; F#w=z/
else D|}%(N@sl
data[cur]=temp[i2++]; Rx22W:S=C.
} 5 :ZM-kZT
} *L3>:],7
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} .'y]Ea
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改进后的归并排序: Xk_xTzJ
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package org.rut.util.algorithm.support; j~eYq
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import org.rut.util.algorithm.SortUtil; .'q0*Pe
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/** u2SnL$A7
* @author treeroot ix<sorR H
* @since 2006-2-2 MHv2r
* @version 1.0 Tkhu,
*/ yE(> R(^
public class ImprovedMergeSort implements SortUtil.Sort { $Q[a^V~:
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private static final int THRESHOLD = 10; 8Q&hhmOnz
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/* OA\2ja~+
* (non-Javadoc) cvR|qHNX
* AS34yM(h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5JE8/CbH
*/ }vRs n-E@
public void sort(int[] data) { p4
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int[] temp=new int[data.length]; +1Ha,Ok
mergeSort(data,temp,0,data.length-1); xD}ha
} E-NuCP%|c
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private void mergeSort(int[] data, int[] temp, int l, int r) { 7-"ml\z
int i, j, k; 2,c{Z$\kn
int mid = (l + r) / 2; Ixhe86-:T
if (l == r) HL;y5o?
return; Y|t] bb
if ((mid - l) >= THRESHOLD) ;?>xuC$
mergeSort(data, temp, l, mid); 28u)q2s^W|
else TbqED\5@9w
insertSort(data, l, mid - l + 1); 8}3dwr;-
if ((r - mid) > THRESHOLD) G 2]/g
mergeSort(data, temp, mid + 1, r); 3%?01$k
else !7MC[z(|N
insertSort(data, mid + 1, r - mid); +$KUy>
Yyq:5V!
for (i = l; i <= mid; i++) { :yN;_bC!b%
temp = data; @B;2z_Y!l
} (|_1ku3!
for (j = 1; j <= r - mid; j++) { uXiAN#1
temp[r - j + 1] = data[j + mid]; yUF<qB
} CA7 ZoMB#
int a = temp[l]; C%LRb{|d
int b = temp[r]; q-%;~LF
for (i = l, j = r, k = l; k <= r; k++) { 9Xb,Swo~
if (a < b) { c:0nOP
data[k] = temp[i++]; xS%Z
a = temp; zc&>RM
} else { 99%oY
data[k] = temp[j--]; Fp>iwdjFg
b = temp[j]; \F;V69'
} YPQ&hEu0
} (H/JB\~r
} 1!,xB]v1Ri
@= f2\hU
/** [5
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* @param data &kKopJH
* @param l b/IT8Cm3
* @param i q<mDs$^K
*/ Xx_v>Jn!
private void insertSort(int[] data, int start, int len) { N|[P%WM3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U)~?/s{v
} h#Cq-^D#~
} $\kqh$")
} (q'w"q j
} EoM}Co
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堆排序: pI2g\cH>
&WN#HI."]
package org.rut.util.algorithm.support; x<#Z3Kla
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import org.rut.util.algorithm.SortUtil; hA1\+r
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/** c,%9Fh?(
* @author treeroot EgO=7?(pW
* @since 2006-2-2 <fq?{z
* @version 1.0 @+LkGrDP
*/ 'EFSr!+
public class HeapSort implements SortUtil.Sort{ %/KN-*
ft oz0Vb
/* (non-Javadoc) SE=3`rVJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F3*]3,&L
*/ "Sp+Q&2U
public void sort(int[] data) { rW$ )f
MaxHeap h=new MaxHeap();
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h.init(data); b~?FV>gl
for(int i=0;i h.remove(); b#%s!
System.arraycopy(h.queue,1,data,0,data.length); q{/>hvl
} k2Yh?OH
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private static class MaxHeap{ D<9FSxl6
=Q985)Y&
void init(int[] data){ W=YFe<Q
this.queue=new int[data.length+1]; ?c712a ?
for(int i=0;i queue[++size]=data; =!{7ZSu\
fixUp(size); ycAQHY~n
} ,4$ZB(\
} eqz#KN`n#
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private int size=0; uM"G)$I\
W]Z;=-CBr
private int[] queue; 3vx*gfr3
g.yr)
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public int get() { 6XyhOs%/
return queue[1]; aw9/bp*N
} _l$V|
|^jl^oW
public void remove() { X`kTbIZ|
SortUtil.swap(queue,1,size--); YCvIB'
fixDown(1); 3 @XkO
} e|x1Dq
file://fixdown $j61IL3+
private void fixDown(int k) { cVjs-Xf7D%
int j; PCzC8~t
while ((j = k << 1) <= size) { |sd0fTK
if (j < size %26amp;%26amp; queue[j] j++; _t[RHrs
if (queue[k]>queue[j]) file://不用交换 MY>mP
break; v'`VyXetl
SortUtil.swap(queue,j,k); R;+vE'&CO
k = j; `I|$U)'
} pR6mSfer
} oujg(
^E
private void fixUp(int k) {
Q)eYJP=W
while (k > 1) { ,CiN@T \&
int j = k >> 1; K|Sh
if (queue[j]>queue[k]) ~,[<R
break; ZmSe>}B=
SortUtil.swap(queue,j,k); LIfQh
k = j; X|!VtO
} }7p`8?
} eUP.:(E
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N"
} J3Ipk-'lx
'1'#,u!
} bgD4;)?5b
d/I,`
SortUtil: AE`z~L,
^P30g2gv>
package org.rut.util.algorithm; +T]/4"^M
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import org.rut.util.algorithm.support.BubbleSort; Ql`N)!
import org.rut.util.algorithm.support.HeapSort; 3 !W
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import org.rut.util.algorithm.support.ImprovedMergeSort; +OSF0#bj
import org.rut.util.algorithm.support.ImprovedQuickSort; )anprhc
import org.rut.util.algorithm.support.InsertSort; ~mAv)JK
import org.rut.util.algorithm.support.MergeSort; Zb> UY8
import org.rut.util.algorithm.support.QuickSort; 7p"4rL
import org.rut.util.algorithm.support.SelectionSort; qg_M9xJ
import org.rut.util.algorithm.support.ShellSort; l/WQqT
yU ?TdM\
/** .%~m|t+Rt
* @author treeroot 0?@;zTE0
* @since 2006-2-2 =$kSvCjP
* @version 1.0 h=<x%sie
*/ F3)w('h9c
public class SortUtil { Cp!bsasj
public final static int INSERT = 1; *@;Pns]L-
public final static int BUBBLE = 2; 7T[Kjn^{Oj
public final static int SELECTION = 3; JDbRv'F:(
public final static int SHELL = 4; ~m`j=ot
public final static int QUICK = 5; ;ZOu-B]q
public final static int IMPROVED_QUICK = 6; o8uak*"{
public final static int MERGE = 7; \0)v5u
public final static int IMPROVED_MERGE = 8; "pRi1Y5)l
public final static int HEAP = 9; SM?rss.=
wk+| }s
public static void sort(int[] data) { 0j\} @
sort(data, IMPROVED_QUICK); (FVHtZi7
} N [qNSo|
private static String[] name={ ~<Eu
@8+_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Bp:PAy
}; gUa-6@
o5h*sQ9
private static Sort[] impl=new Sort[]{ }0okyGg>q
new InsertSort(), 8'<RPU}M
new BubbleSort(), f;{K+\T
new SelectionSort(), |BA&ixHe~C
new ShellSort(), @IE.@1
new QuickSort(), /#Fz
K
new ImprovedQuickSort(), c^F@9{I
new MergeSort(), m#Y[EPF=|
new ImprovedMergeSort(), td!YwN*
new HeapSort() xI>HY9i)
}; kac-@
dy"7Wl]hi7
public static String toString(int algorithm){ 9z'(4U
return name[algorithm-1]; ^1w<wB\B
} { POfT
m}
9O4\DRe5c
public static void sort(int[] data, int algorithm) { ,DIr&5>p2
impl[algorithm-1].sort(data); tNf_,]u
} rds4eUxe
x'iBEm
public static interface Sort { GeFu_7u!|
public void sort(int[] data); -/ YY.F-
} |-Q="7b%
8+mu'RZ X
public static void swap(int[] data, int i, int j) { yc7"tptfF
int temp = data; KN<KZM
data = data[j]; ],|;
data[j] = temp; F9J9zs*,
} nd)`G$gL
} rD!UP1Nb