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。 z.7'yJIP#
插入排序: sB,>4*Zd
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package org.rut.util.algorithm.support; f{Dc R"
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import org.rut.util.algorithm.SortUtil; :>t?^r(
/** @GiR~bKZ
* @author treeroot I2wT]L UV
* @since 2006-2-2 T?Dq2UW
* @version 1.0 @Sl!p)
*/ \#A=twp
public class InsertSort implements SortUtil.Sort{
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/* (non-Javadoc) Um$a9S8b&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]3E':JM@
*/ 69v[*InSd
public void sort(int[] data) { -~HlME*~f
int temp; %TJF+;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z)U#5|sf
} Qp?n0WXZ
} a'v%bL;H~
} pw7_j;}l
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} .F~EQ %
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冒泡排序: R<!WW9IM
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package org.rut.util.algorithm.support; `f:5w^A
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import org.rut.util.algorithm.SortUtil; 3\,TI`^C
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/** iDO~G($C
* @author treeroot tc{23Rf%
* @since 2006-2-2 Hc@Z7eQ3^
* @version 1.0 ;D/'7f7.}
*/ V,uhBMT#
public class BubbleSort implements SortUtil.Sort{ VmTk4?V4
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/* (non-Javadoc) 'Ph4(Yg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LwUvM
*/ ^}8_tZs8\
public void sort(int[] data) { n20H{TA
int temp; U[S;5xeF.j
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0zpP$q$
if(data[j] SortUtil.swap(data,j,j-1); 33\b@F7b
} 4(JxZ49
} B`hxF(_p/
} #k=!>%+E
} 9GZF39w u
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} B>47Ic
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选择排序: vS<;:3
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package org.rut.util.algorithm.support; y&__2t^u
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import org.rut.util.algorithm.SortUtil; 4r(rWlM
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/** ,75,~
* @author treeroot <R{\pz2w
* @since 2006-2-2 g6W.Gl"5\w
* @version 1.0 udc9$uO
*/ 9I RE@c
public class SelectionSort implements SortUtil.Sort { iCx'`^HnP
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/* \iVYhl
* (non-Javadoc) # |UrHK;
* SwP h-6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #3CA
*/ j#p3c
public void sort(int[] data) { SyYa_=En
int temp; {{DW P-v4
for (int i = 0; i < data.length; i++) { 'ZDa *9nkF
int lowIndex = i; <bTa88,)
for (int j = data.length - 1; j > i; j--) { xUrfH$$!`
if (data[j] < data[lowIndex]) { -=qmYf
lowIndex = j; jY?%LY@5I
} t1~*q)!Mo
} g*]<]%Py"
SortUtil.swap(data,i,lowIndex); Q'=!1^&
} *@Qt*f
} "1#,d#Q $
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} A qm0|GlJ
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Shell排序: QnGJ4F
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package org.rut.util.algorithm.support; TM RXl.1
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import org.rut.util.algorithm.SortUtil; QWP_8$Q
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/** %Mu dc
* @author treeroot g+CHF?O
* @since 2006-2-2 eX$Biv1N
* @version 1.0 UmJg-~
*/ L`p[Dq.
public class ShellSort implements SortUtil.Sort{ r:o!w7C:a
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/* (non-Javadoc) e'?(`yW>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lk'RWy"pw
*/ Ar$LA"vu4
public void sort(int[] data) { l%:_#1?isf
for(int i=data.length/2;i>2;i/=2){ C^~iz
in
for(int j=0;j insertSort(data,j,i); 2-6-kS)c
} &KB{,:)?
} := 8vy
insertSort(data,0,1); 5u8Sxfm",
} f;Dz(~hw
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/** 04"hQt{[
* @param data _96&P7
* @param j n-Xj>
* @param i 8BN'fWl&E
*/ ~E\CAZ
private void insertSort(int[] data, int start, int inc) { x{- caOH
int temp; g$tW9 Q
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);
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} 6 qq7:
} 68SM br
} v 3NaX.
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} :)z_q!$j
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快速排序: F~Li.qF
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package org.rut.util.algorithm.support; p%s
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import org.rut.util.algorithm.SortUtil; g DhwJks
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/** 0b4OJ[
* @author treeroot NR*SEbUU*
* @since 2006-2-2 cNVdGY%&
* @version 1.0 |h7v}Y
*/ |^F-.Z
public class QuickSort implements SortUtil.Sort{ >W;i2%T
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/* (non-Javadoc) T)u w2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r>Ln*R,9D
*/ CytpL`&^]
public void sort(int[] data) { /K^cU;E,
quickSort(data,0,data.length-1); z)%1 i
} ZwMw g t
private void quickSort(int[] data,int i,int j){ ~K9U0ypH
int pivotIndex=(i+j)/2; wGvgMZ ]?'
file://swap -)oBh
SortUtil.swap(data,pivotIndex,j); G
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int k=partition(data,i-1,j,data[j]); Pio^5jhB6
SortUtil.swap(data,k,j); 'm|m+K83
if((k-i)>1) quickSort(data,i,k-1); {#,FlR2
if((j-k)>1) quickSort(data,k+1,j); sYXS#;|M
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} K\b O[J
/** *3$,f>W^
* @param data {Fi@|'
* @param i Z=0W@_s
* @param j O[!o1.
* @return PlZiTP
*/ 9HX+sB
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private int partition(int[] data, int l, int r,int pivot) { ;X(n3F
do{ C~qhwwh
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5F"?]'*/
SortUtil.swap(data,l,r); 9#<Og>t2y
} ~t={ \,X\
while(l SortUtil.swap(data,l,r); iI*7WO[W
return l; $hSZ@w|IF
} +,Az\aT/%
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} FE}!bKh
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改进后的快速排序: =[JN'|Q+
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package org.rut.util.algorithm.support; 6>:~?gs
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import org.rut.util.algorithm.SortUtil; zXZ'nJ5OGG
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/** (0W}e(D8
* @author treeroot ,dx)rZ*
* @since 2006-2-2 D a[C'm=
* @version 1.0 A Vm{#^p[(
*/ 6
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public class ImprovedQuickSort implements SortUtil.Sort { 7[g;|(G0
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private static int MAX_STACK_SIZE=4096; {X<4wxeTo
private static int THRESHOLD=10; *W12Rb2
/* (non-Javadoc) _I_?k+#WFe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .vS6_
*/ cTd;p>:>m
public void sort(int[] data) { _AYC|R|
int[] stack=new int[MAX_STACK_SIZE]; mSzpRa
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int top=-1; [!@oRK=~
int pivot; >}b6J7_
int pivotIndex,l,r; MJ,ZXJXs
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stack[++top]=0; f&}A!uLe4x
stack[++top]=data.length-1; s;2/Nc
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while(top>0){ +}QBzGW`
int j=stack[top--]; tIb21c q
int i=stack[top--]; 2l@"p!ar=
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pivotIndex=(i+j)/2; 8a`+h#
pivot=data[pivotIndex]; b/B`&CIA0"
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SortUtil.swap(data,pivotIndex,j); ^8NLe9~p3?
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file://partition
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l=i-1; y[p$/$bgC5
r=j; 7grt4k
do{ eKVALUw
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -~\.n
SortUtil.swap(data,l,r); dA1
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} P:(EU s}0
while(l SortUtil.swap(data,l,r); ~sU?"V
SortUtil.swap(data,l,j); *)bd1B#
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if((l-i)>THRESHOLD){ ^'&iYV
stack[++top]=i; 'Z.OF5|eGT
stack[++top]=l-1; -/UXd4S
} lMwk.#
if((j-l)>THRESHOLD){ 3G%wZ,)C
stack[++top]=l+1; LMFK3Gd[
stack[++top]=j; TTZ['HP
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} 2K]IlsMO&
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} lC=N:=Mu
file://new InsertSort().sort(data); &^&$!Xmu9
insertSort(data); g={]Mzh
} 1xO!w+J#
/** RQ^m6)BTo
* @param data 4L=$K2R2r
*/ 4YDT%_h0
private void insertSort(int[] data) { LAv:+o(m/
int temp; N^h|h
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SqXy;S@
} &@YFje6Lcm
} cgs3qI
} X-kXg)!Bg
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} uw Kh
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归并排序: ]By0Xifew
/a[V!<"R
package org.rut.util.algorithm.support; 4>4V-m\
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import org.rut.util.algorithm.SortUtil; m$fQ `XzU
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/** vG ]GQ#
* @author treeroot [D3+cDph
* @since 2006-2-2 *8$>Whr
* @version 1.0 YBX)eWslK
*/ q&zny2])
public class MergeSort implements SortUtil.Sort{ )v%l0_z{
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/* (non-Javadoc) CifA,[l34
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iv:,fkwG
*/ TC qkm^xv
public void sort(int[] data) { QVIcb;&:}
int[] temp=new int[data.length]; h&lyxYZ+T$
mergeSort(data,temp,0,data.length-1); >M?H79fF2s
} HSNOL
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private void mergeSort(int[] data,int[] temp,int l,int r){ }>2t&+v+
int mid=(l+r)/2; >s&XX,
w
if(l==r) return ; L-#e?Y}$J
mergeSort(data,temp,l,mid); HHz;0V4w?
mergeSort(data,temp,mid+1,r); ?4^};wDb2
for(int i=l;i<=r;i++){ Le*`r2
temp=data; =0,|/1~
} >Q;
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int i1=l; R]Hz8 _X
int i2=mid+1; WFouoXlG0
for(int cur=l;cur<=r;cur++){ i8K_vo2Z)
if(i1==mid+1) F8;mYuA
data[cur]=temp[i2++]; /vHYM S
else if(i2>r) k@S)j<
data[cur]=temp[i1++]; !X-9Ms}(d
else if(temp[i1] data[cur]=temp[i1++]; _=pWG^a
else G\R*#4cF
data[cur]=temp[i2++]; Z a!
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} rn;<HT
} z<!O!wX_aI
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}
} $!f!,fw+
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改进后的归并排序: Pb#P`L7OB
GWhE8EDT
package org.rut.util.algorithm.support; vv+km +
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import org.rut.util.algorithm.SortUtil; Xh?4mKgu
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/** P1MvtI4gm
* @author treeroot J96uyS*
* @since 2006-2-2 %)?`{O~ h
* @version 1.0 &:<, c12
*/ GF*>~_Yr
public class ImprovedMergeSort implements SortUtil.Sort { RND9D\7
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private static final int THRESHOLD = 10; $E\^v^LW
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/* }9^@5!qX
* (non-Javadoc) Sm)u9
* 7\Co`J>p2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R:M,tL-l
*/ "N 3)Qr
public void sort(int[] data) { "oR@JbdX
int[] temp=new int[data.length]; wPX*%0]
mergeSort(data,temp,0,data.length-1); Br!9x{q*
} V^TbP.
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private void mergeSort(int[] data, int[] temp, int l, int r) { X%4Kj[I^
int i, j, k; %Ds+GM-
int mid = (l + r) / 2; Qs%B'9")
if (l == r) KnGTcoXg_
return; rQb7?O@-
if ((mid - l) >= THRESHOLD) t0Mx!p'T
mergeSort(data, temp, l, mid); T7[NcZ:I
else "hQgLG
insertSort(data, l, mid - l + 1); 'RbQj}@x
if ((r - mid) > THRESHOLD) G69GoT
mergeSort(data, temp, mid + 1, r); V
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else 0
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insertSort(data, mid + 1, r - mid); -DjJ",h( $
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for (i = l; i <= mid; i++) { IeP
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temp = data; [M%._u,
} @1:0h9%
for (j = 1; j <= r - mid; j++) { iOCqE 5d3
temp[r - j + 1] = data[j + mid]; S\=1_LDx"
} xr%#dVk
int a = temp[l]; tU:EN;H
int b = temp[r]; GpI!J}~m
for (i = l, j = r, k = l; k <= r; k++) { b~w=v_[(I
if (a < b) { iM]o"qOQm
data[k] = temp[i++]; _>yoX
a = temp; 2VGg 6%
} else { NxA)@9Q
data[k] = temp[j--]; Bd~1P/
b = temp[j]; t:)ERT")
} bt$)Xu<R
} B*3Y!!
} [p;E~-S
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/** i+{yMol1
* @param data !?!C'-ps
* @param l 8|%^3O 0X
* @param i D5,P)[
*/ 0#*Lw }qi
private void insertSort(int[] data, int start, int len) { 04U")-\O
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /JkC+7H4
} [7FItlF%I
} XB59Vm0E=
} @]aOyb@
} $*R/tJ.
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堆排序: wU\s;
dK
fw6UhG
package org.rut.util.algorithm.support; sarq`%zrk
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import org.rut.util.algorithm.SortUtil; :GpDg
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/** X;v$5UKU
* @author treeroot ,\2:/>2
* @since 2006-2-2 M-V&X&?j
* @version 1.0 uvP2Wgt
*/ { FZ=olZ
public class HeapSort implements SortUtil.Sort{ RPd}Wf
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/* (non-Javadoc) +l3=3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ig]iT
*/ n_ lo`
public void sort(int[] data) { z4M9M7)"
MaxHeap h=new MaxHeap(); 4lhw3,5
h.init(data); ivDGZI9
for(int i=0;i h.remove(); 4SPy28<f
System.arraycopy(h.queue,1,data,0,data.length); |sRipWh
} M" ^PW,k
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private static class MaxHeap{ Q'_z<V
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void init(int[] data){ b)(?qfXWP
this.queue=new int[data.length+1]; 5p.rwNE
for(int i=0;i queue[++size]=data; r'QnX;99T
fixUp(size); 2{|h8oz
} 4jD2FFG-
G
} z~`b\A,$
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private int size=0; }!IL]0q
g1t0l%_7^
private int[] queue; 3U_2! zF3_
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public int get() { 8 r_>t2$
return queue[1]; @v}/zS
} R<OI1,..r
4:g R r
public void remove() { ^Q+g({
SortUtil.swap(queue,1,size--); EkziAON
fixDown(1); x?&$ ci
} 3}e%[AKh
file://fixdown As>_J=8} 3
private void fixDown(int k) { rRFhGQq1m
int j; ,\NFt`]j
while ((j = k << 1) <= size) { 0jEL<TgC
if (j < size %26amp;%26amp; queue[j] j++; `r?7oxN
if (queue[k]>queue[j]) file://不用交换 i':C)7
break; _4g.j
SortUtil.swap(queue,j,k); YpqrZWvh
k = j; >y,-v:Vy
} rS;Dmm
} ~ 0M'7q'
private void fixUp(int k) { Cg(Y&Gxf.
while (k > 1) { <i,U )Tt^C
int j = k >> 1; 55z]&5N
if (queue[j]>queue[k]) BqT y~{)+
break; AJ=qn a
SortUtil.swap(queue,j,k); j:VbrR
k = j; t2)rUWg
} 8SGo9[U2
} w4gJoxY-`
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} 2 O%`G+\)
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} s=;uc]9g
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SortUtil: }|pwz
9?SZNL['V
package org.rut.util.algorithm; w9bbMx
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import org.rut.util.algorithm.support.BubbleSort; Eqj_m|@
import org.rut.util.algorithm.support.HeapSort; 2%_vXo=I
import org.rut.util.algorithm.support.ImprovedMergeSort; 4GX-ma,
import org.rut.util.algorithm.support.ImprovedQuickSort; .?loO3 m
import org.rut.util.algorithm.support.InsertSort; >7QvK3S4%
import org.rut.util.algorithm.support.MergeSort; ,Pdf,2
import org.rut.util.algorithm.support.QuickSort; 0"pAN[=K@
import org.rut.util.algorithm.support.SelectionSort; ci?qT,&
import org.rut.util.algorithm.support.ShellSort; )% ~OH
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/** 5?]hd*8
* @author treeroot AT2n VakL
* @since 2006-2-2 ?j"KV_
* @version 1.0 8; 0A
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*/ +lHjC$
public class SortUtil { H}hiT/+$
public final static int INSERT = 1; ,g2ij
public final static int BUBBLE = 2; )-a'{W/t
public final static int SELECTION = 3; JzQ )jdvp
public final static int SHELL = 4; SAy=WV
public final static int QUICK = 5; K<>oa[B9
public final static int IMPROVED_QUICK = 6; wAf\|{Vn
public final static int MERGE = 7; wk5s)%V
public final static int IMPROVED_MERGE = 8; ]~'5\58sP
public final static int HEAP = 9; 6WXRP;!Q
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public static void sort(int[] data) { [YlKR'_
sort(data, IMPROVED_QUICK); =THpdtL
} x!5'`A!W%
private static String[] name={ 0jy2H2
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"
<G|(|E1
}; E&2OD [iX
1g8_Xe4
private static Sort[] impl=new Sort[]{ F8jd'OR
new InsertSort(), Azl&m