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。 p`2w\P3;)
插入排序: EX9os
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package org.rut.util.algorithm.support; 1O@
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import org.rut.util.algorithm.SortUtil; sbV
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/** 5T- N\)@
* @author treeroot pZaOd;t
* @since 2006-2-2 .P5OUK
* @version 1.0 T?Y/0znB*
*/ 95%QF;h
public class InsertSort implements SortUtil.Sort{ }{(J*T
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/* (non-Javadoc) (n0h#%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mcqLN5
*/ r}Ec_0_lt
public void sort(int[] data) { @_4E^KgF
int temp; N497"H</
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I`
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} qGrUS_~q*
} .T|1l$Jn
}
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} [+4/M3J%
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冒泡排序: uA~T.b\
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package org.rut.util.algorithm.support; 6< O|,7=_
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import org.rut.util.algorithm.SortUtil; O{w'i|
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/** T\b-<Xle
* @author treeroot h<I C
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* @since 2006-2-2 U,2H) {l/
* @version 1.0 (&^k''f
*/ ;N;['xcx;
public class BubbleSort implements SortUtil.Sort{ y $6~&X
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/* (non-Javadoc) B9i<="=p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,ctm;T1H+
*/ {RPZq2Tpc
public void sort(int[] data) { ZxvBo4>tH
int temp; Kdr7JQYzuz
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ia!B8$$'RP
if(data[j] SortUtil.swap(data,j,j-1); ywj'S7~A
} \mGok<b4
} x}B_;&>&"_
} z(g6$Y{
} 2=V~n)'a
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} [ 30ta<-
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选择排序: lJIcU
RI4
OuuN~yC
package org.rut.util.algorithm.support; vn5O8sD
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import org.rut.util.algorithm.SortUtil; eb#p-=^KP
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/** pb5q2|u`h
* @author treeroot R?L?6~/q
* @since 2006-2-2 +pG[
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* @version 1.0 :HW\awv
*/ c3]`W7E6L
public class SelectionSort implements SortUtil.Sort { kX)QHNzP
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/* =%Z5"];
* (non-Javadoc) i2&I<:
* Z;M th#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V AnP3:
*/ 7I4<Dj
public void sort(int[] data) { aPRXK1
int temp; Ygs:Ox"[-G
for (int i = 0; i < data.length; i++) { Xdl7'~k
int lowIndex = i; T:!f_mu|
for (int j = data.length - 1; j > i; j--) { Or3GrZ!H
if (data[j] < data[lowIndex]) { -|g9__|@
lowIndex = j; ?ytY8`PC
} R8bKE(*rxj
} P1qQ)-J
SortUtil.swap(data,i,lowIndex); CAa&,ZR
} Z66h
} t/B4?A@C
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} u?7^+z
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Shell排序: V:<Z
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package org.rut.util.algorithm.support; 'PWX19
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import org.rut.util.algorithm.SortUtil; d.xT8l}sS
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/** A{%LL r:
* @author treeroot V~MyX&`
* @since 2006-2-2 ~A03J:Yc7
* @version 1.0 ;Z.sK-NJ4
*/ \OE,(9T2P.
public class ShellSort implements SortUtil.Sort{ vI \8@97
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/* (non-Javadoc) $bFH%EA.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fLg
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*/ '37 <+N
public void sort(int[] data) { WP5Vev9*+
for(int i=data.length/2;i>2;i/=2){ GJIZu&C
for(int j=0;j insertSort(data,j,i); js;k,`
} nSpOTQ
} B|ctauJ
insertSort(data,0,1); I#/"6%e
} 1h3`y
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/** a7sX*5t{R
* @param data H"c2kno9
* @param j &2r[4
* @param i {~`{bnx^]7
*/ Ze?n Q-
private void insertSort(int[] data, int start, int inc) { LcTTfb+<
int temp; ',!>9Dj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ym?VF{e,
} ?Xj@Sx
} rP IAu[],g
} K=>j+a5$
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} 5DJ!:QY!
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快速排序: xy]oj
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package org.rut.util.algorithm.support; =1\mLI}@
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import org.rut.util.algorithm.SortUtil; \46*4?pP
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/** wli H3vA_
* @author treeroot vXg^K}a#
* @since 2006-2-2 =s9*=5r 8
* @version 1.0 +&G]\WX<
*/ uSv]1m_-]
public class QuickSort implements SortUtil.Sort{ D^6Q`o
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/* (non-Javadoc) iNilk!d6Q3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7rG+)kHG
*/ 0"Zxbgu)
public void sort(int[] data) { ez~u A4
quickSort(data,0,data.length-1); +
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} {^k7}`7,
private void quickSort(int[] data,int i,int j){ u>=\.d<
int pivotIndex=(i+j)/2; FL b
file://swap p)VMYu
SortUtil.swap(data,pivotIndex,j); Ba5*]VGG
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int k=partition(data,i-1,j,data[j]); reArXmU<u
SortUtil.swap(data,k,j); ~av#r=x
if((k-i)>1) quickSort(data,i,k-1); !OQ5AF$
if((j-k)>1) quickSort(data,k+1,j); [7~AWZU3
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} ZzTkEz >
/** [7HBn
* @param data z^.dYb7<
* @param i |<,0*2
* @param j )g^qgxnnV
* @return #Y3-P
*/ oIx|)[
private int partition(int[] data, int l, int r,int pivot) { _deEs5i
do{ iu*&Jz)D>
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,ayJgAD
SortUtil.swap(data,l,r); $N}t)iA
} 0gW{6BtPWm
while(l SortUtil.swap(data,l,r); vY|YqWt
return l; %HtgZeY
} }N(gP_?n
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} 1L'Q;?&2H,
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改进后的快速排序: kh=<M{-t
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package org.rut.util.algorithm.support; k+?gWZ\
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import org.rut.util.algorithm.SortUtil; 7=u
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/** t$Ff$(
* @author treeroot 6("bdx;!
* @since 2006-2-2 sF[gjeIb
* @version 1.0 +_pfBJ_$%
*/ rFzj\%xa[
public class ImprovedQuickSort implements SortUtil.Sort { (tVT&eO
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private static int MAX_STACK_SIZE=4096; D]*|Zmr+}
private static int THRESHOLD=10; dm=?o
/* (non-Javadoc) uF}dEDB|;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ||wi4TP
*/ zng.(]U/?H
public void sort(int[] data) { *w _ o8!3-
int[] stack=new int[MAX_STACK_SIZE]; r5nHYV&7
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int top=-1; CR9wp]-Vd
int pivot; 1Hr1Ir<KR
int pivotIndex,l,r; =JfwHFHd#
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stack[++top]=0; k;t G-~\d
stack[++top]=data.length-1; fi*b]a\'
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while(top>0){ fvH{va.
int j=stack[top--]; >FOCdlJ#
int i=stack[top--]; UxHI6,b
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pivotIndex=(i+j)/2; -`\^_nVC
pivot=data[pivotIndex]; |T/OOIA=sI
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SortUtil.swap(data,pivotIndex,j); xcmg3:s
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file://partition ([rn.b]
l=i-1; SZr c-f_
r=j; w8Z#]kRv
do{ )mwwceN
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =Jw*T[ E
SortUtil.swap(data,l,r); JHm Pa
} )mOM!I7D@
while(l SortUtil.swap(data,l,r); NI,>$@{
SortUtil.swap(data,l,j); +kYp!00
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if((l-i)>THRESHOLD){ *Us}E7/"'
stack[++top]=i; +VW8{=$
stack[++top]=l-1; xsRkO9x
} +3zQ"lLD^
if((j-l)>THRESHOLD){ (Ytr&gh;0
stack[++top]=l+1; m`8{arz2
stack[++top]=j; c\rP
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} aLm~.@Q
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} 2Ul8<${c{
file://new InsertSort().sort(data); u
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insertSort(data); iZnLgkk@
}
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/** 7.G"U
* @param data s
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*/
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private void insertSort(int[] data) { af@a /
int temp; .J @mpJdY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |+HJ>xA4I
} T`]%$$1s
} ^}vf
} LD?\gK"
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} eA]8M^
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归并排序: .Y7Kd+)s)L
*u|1Z%XO
package org.rut.util.algorithm.support; x5\D u63
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import org.rut.util.algorithm.SortUtil; 7O|`\&RYR
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/** 5o4KV?"
* @author treeroot Zi]E!Tgn
* @since 2006-2-2 n
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* @version 1.0 $u, 6x~>
*/ fsEQ4xN'
public class MergeSort implements SortUtil.Sort{ w]h8KNt
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/* (non-Javadoc) SnUR?k1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _~umE/tz
*/ WO!OaC?+B,
public void sort(int[] data) { 2(\PsN w!
int[] temp=new int[data.length]; :,$"Gk
mergeSort(data,temp,0,data.length-1); &ZFHWI(P
} UNv!G/i-5
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5"1wz
int mid=(l+r)/2; 6#jql
if(l==r) return ; 3gJZlH5IR
mergeSort(data,temp,l,mid); [%6)
mergeSort(data,temp,mid+1,r); xbcmvJrG
for(int i=l;i<=r;i++){ KMqGWO*
temp=data; NZ8X@|N
} 8a8D0}'
int i1=l; 69:-c@L0
int i2=mid+1; IW@phKz
for(int cur=l;cur<=r;cur++){ EvY^]M_U
if(i1==mid+1) tGXH)=K
data[cur]=temp[i2++]; {(Mmv[y
else if(i2>r) >X:!Y[N
data[cur]=temp[i1++]; l:/x&=w
else if(temp[i1] data[cur]=temp[i1++]; &0G9v
else -U9C{q?h
data[cur]=temp[i2++]; %{^|Av1Uz
} k*,+ag*j
} $II~tO
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} y[AB,Dd
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改进后的归并排序: $XkO\6kh
;9 ChBA
package org.rut.util.algorithm.support; w"QZ7EyJ
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import org.rut.util.algorithm.SortUtil; WMWMb3
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/** OqF8KJnO;
* @author treeroot )4:]gx#cr
* @since 2006-2-2 kG}F/GN?
* @version 1.0 nf&5oE^
*/ /P]N40_@
public class ImprovedMergeSort implements SortUtil.Sort { VTyj<6Y
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private static final int THRESHOLD = 10; Lg#(?tMp,'
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/* iAXGf V
* (non-Javadoc) \"Z\Af<
* FDGG$z?>m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9zCuVUcd$.
*/ OTJMS_IT
public void sort(int[] data) { YH^@8
int[] temp=new int[data.length]; ]A#:Uc5
mergeSort(data,temp,0,data.length-1); m^TN6/])
} pm:- E(3#
8?: 2<
private void mergeSort(int[] data, int[] temp, int l, int r) { '}bmDb*
int i, j, k; R1<$VR
int mid = (l + r) / 2; y+{)4ptg$<
if (l == r) fZ;}_wR-H
return; RQ^
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if ((mid - l) >= THRESHOLD) 5a)$:oO!
mergeSort(data, temp, l, mid); }Ujgd2(U
else FCKyKn
insertSort(data, l, mid - l + 1); #)[.Xz:U
if ((r - mid) > THRESHOLD) y}|E)
mergeSort(data, temp, mid + 1, r); A^LS^!Jz
else 7^LCP*
insertSort(data, mid + 1, r - mid); Q&^\YgkCf
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for (i = l; i <= mid; i++) { SB .=x
temp = data; e+4Eiv
} ~%f$}{
for (j = 1; j <= r - mid; j++) { Km,o+9?1gF
temp[r - j + 1] = data[j + mid]; G#6Z@|kVw
} KtH^k&z.f
int a = temp[l]; 8pftc) k
int b = temp[r]; de.f?y
for (i = l, j = r, k = l; k <= r; k++) { (~E-=+R[$&
if (a < b) { oGl<i
data[k] = temp[i++]; >gM"*Laa?
a = temp; -p>1:M <
} else { c14d0x{
data[k] = temp[j--]; RO%M9LISI
b = temp[j]; )& Oxp&x
} tns8B
} T:H~Y+qnt
} U,61 3G
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/** hN]l
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* @param data 3
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* @param l ~/z%yg
* @param i 0( A ?&
*/ wAX;)PLg
private void insertSort(int[] data, int start, int len) { z9g6%RbwX
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mU?~s7
} sK&kp=zu
} EHn!ZrQgh
} 5Wa)_@qI)`
} =UK:83R(
Lv/}&'\(
堆排序: u;rmqo1
E.NfVeq
package org.rut.util.algorithm.support; RxJbQs$Ph
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import org.rut.util.algorithm.SortUtil; JJWPte/
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/** K\xM%O?
* @author treeroot y|MhV/P04
* @since 2006-2-2 4To$!=
* @version 1.0 e\[q3J
*/ ((`{-y\K
public class HeapSort implements SortUtil.Sort{ e#h&Xa
%u&Vt"6m=
/* (non-Javadoc) tyW[i8)O}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O]hUOc`k
*/ ,z#D[5
public void sort(int[] data) { C}xfo}i
MaxHeap h=new MaxHeap(); P}gtJ;
h.init(data); :'ZR!w
for(int i=0;i h.remove(); 3-:^mRPJ
System.arraycopy(h.queue,1,data,0,data.length); L,#YP#O,j
} lN5PKsGl
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private static class MaxHeap{ vqf}(/.D
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void init(int[] data){
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this.queue=new int[data.length+1]; Y]`=cR`/"
for(int i=0;i queue[++size]=data; FN!?o:|(
fixUp(size); *lLCH,
} URm<