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。 %@%~<U)W
插入排序: oM,UQ!x<
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package org.rut.util.algorithm.support; aI\ ]R:f,
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import org.rut.util.algorithm.SortUtil; G ahY+$L,
/** c43&[xPLz
* @author treeroot v=D4O .
* @since 2006-2-2 ~:-V<r,pe
* @version 1.0 axv-UdE;
*/ j0S[JpoF
public class InsertSort implements SortUtil.Sort{ ZOL#Q+U
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/* (non-Javadoc) +Xmza8T9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ljk0K3Q6>
*/ Vtk}>I@%
public void sort(int[] data) { bWzUWLa
int temp; ^k!u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (KR.dxzjf
} q&,uJo
} ;$UB@)7%
} qx}*L'xB
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} ?q"9ZYX<
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冒泡排序: 5(y Q-/6C+
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package org.rut.util.algorithm.support; l{.
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import org.rut.util.algorithm.SortUtil; Vje LPbk)
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/** P2 +^7x?
* @author treeroot xic&m5j
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* @since 2006-2-2 Q5;EQ.#
* @version 1.0 #}8gHI-9%
*/ mMad1qCi7
public class BubbleSort implements SortUtil.Sort{ 5
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/* (non-Javadoc) 6!RKZj)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8HdjZ!
*/ ,m)YL>k
public void sort(int[] data) { q?#w%0}
int temp; z!^3%kJJ>
for(int i=0;i for(int j=data.length-1;j>i;j--){ T2 V(P>E
if(data[j] SortUtil.swap(data,j,j-1); `_M&zN
} kk
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} l I+KT_|L
} cA`X(Am6]g
} _u;34H&/
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} d C6t+
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选择排序: E D_J8+
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package org.rut.util.algorithm.support; J8hH#7WMS
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import org.rut.util.algorithm.SortUtil; 5Veybchy "
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/** >8DZj&j
* @author treeroot AHTQF#U^
* @since 2006-2-2 200Fd8Ju
* @version 1.0 0EUC8Ni
*/ '>UQsAvm
public class SelectionSort implements SortUtil.Sort { PL7_j
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/* @.KFWAm
* (non-Javadoc) fMZc_dsW9
* g=kuM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }_cX" s
*/ .T7S1C $HP
public void sort(int[] data) { wTVd){q`.
int temp; +p &$`(
for (int i = 0; i < data.length; i++) { {IQCA-AI
int lowIndex = i; WSV% Oy3V
for (int j = data.length - 1; j > i; j--) { @ {8xL
if (data[j] < data[lowIndex]) { v ce1'aW
lowIndex = j; 3HB(rTw
}
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} zY\MzhkX,
SortUtil.swap(data,i,lowIndex); | PzXN+DW
} M!]g36h[
} U("m}^
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} !T26#>mV
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Shell排序: yA-UXKT
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package org.rut.util.algorithm.support; RhumNP<M
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import org.rut.util.algorithm.SortUtil; r`d.Wy Zj
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/** Z~ {[YsG
* @author treeroot R>`TV(W`9
* @since 2006-2-2 F$H^W@<w
* @version 1.0 OEj%cB!
*/ 7a'@NgiGg
public class ShellSort implements SortUtil.Sort{ 4(}V$#^+
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/* (non-Javadoc) {#uf#J|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kI#yW!
*/ y
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public void sort(int[] data) { #6qLu
for(int i=data.length/2;i>2;i/=2){ 2W=am_\0e.
for(int j=0;j insertSort(data,j,i); atjrn:X
} gX*i"Y#
} vhu5w#]u*
insertSort(data,0,1); <!.Qn
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} B}2 JK9
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/** St~a/Lq6
* @param data `1)n2<B
* @param j 7%Ii:5Bp
* @param i (% f2ZNen
*/ uOnyU+fZV
private void insertSort(int[] data, int start, int inc) { +#0,2wR#
int temp; ttC+`0+H
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~:lN("9OI
} mRC6m
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} \j3XT}
} d"JI4)%
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} <bxp/#6D
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快速排序: A]"IQ-
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package org.rut.util.algorithm.support; 7"Iagrgw
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import org.rut.util.algorithm.SortUtil; 0`l(c
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/** Qg4g(0E@
* @author treeroot @+
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* @since 2006-2-2 :6X?EbXhK
* @version 1.0 L
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*/ 0'.7dzz
public class QuickSort implements SortUtil.Sort{ U `<?~Bz
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/* (non-Javadoc) S)[$F}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tcU4$%H/
*/ Um\_G@
public void sort(int[] data) { A/{0J\pA
quickSort(data,0,data.length-1); dk4|*l-
} SRf.8j
private void quickSort(int[] data,int i,int j){ G%RhNwm
int pivotIndex=(i+j)/2; mBZg(TY
file://swap |Y\BI^
SortUtil.swap(data,pivotIndex,j); _f5n
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int k=partition(data,i-1,j,data[j]); -?&s6XA%#
SortUtil.swap(data,k,j); b".e6zev
if((k-i)>1) quickSort(data,i,k-1); WF0[/Y
if((j-k)>1) quickSort(data,k+1,j); F),wj8#~>-
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} &fYV FRVkq
/** -{'WIGm
* @param data wX*F'r"z
* @param i F-2&P:sjQ
* @param j WGrG#Kw[
* @return z^r
*/ F/I`EV
private int partition(int[] data, int l, int r,int pivot) { @$(@64r
do{ ~)&im.Q4
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N3}jLl/
SortUtil.swap(data,l,r); zV8^Hxl
} ?h4Rh0rkX
while(l SortUtil.swap(data,l,r); %1oG<s
return l; $9Yk]~
} h16 i]V
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} gr
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改进后的快速排序: p +>vX
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package org.rut.util.algorithm.support; /}=Bi-
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import org.rut.util.algorithm.SortUtil; M}
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/** 2XN];,{
* @author treeroot ayvHS&h
* @since 2006-2-2 8
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* @version 1.0 g`BtG
*/ &=d0'3k>
public class ImprovedQuickSort implements SortUtil.Sort { 1SYBq,[])
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private static int MAX_STACK_SIZE=4096; +`)4jx)r/
private static int THRESHOLD=10; )mVpJYt;
/* (non-Javadoc) a9 CK4Kg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P<<hg3@
*/ !?~>f>js_l
public void sort(int[] data) { >X"V
int[] stack=new int[MAX_STACK_SIZE]; L)Iv]u
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int top=-1; 4dwG6-
int pivot; K^'NG!
int pivotIndex,l,r; #I(Ho:b
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stack[++top]=0; L93KsI
stack[++top]=data.length-1; m"CsJ'\ors
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while(top>0){ 09psqXU@I
int j=stack[top--]; @a{1vT9b
int i=stack[top--]; N$i|[>`j
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pivotIndex=(i+j)/2; LYv$U;*+
pivot=data[pivotIndex]; hD5G\TR.
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SortUtil.swap(data,pivotIndex,j); rcWr0q
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file://partition (\=iKE4#
l=i-1; OYsG#
r=j; M!e$h?vB
do{ 2X t$KF,?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;ESuj'*t
SortUtil.swap(data,l,r); C=z7Gk=
} U%~L){<V[
while(l SortUtil.swap(data,l,r); [N-t6Z*
SortUtil.swap(data,l,j); +%hA6n
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if((l-i)>THRESHOLD){ (gn)<JJS}
stack[++top]=i; fq"<=
stack[++top]=l-1; ?xbPdG":R
} i9FHEu_
if((j-l)>THRESHOLD){ 0WjPo
stack[++top]=l+1; eaI!}#>R+
stack[++top]=j; P{-f./(JD
}
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} KF#,Q
file://new InsertSort().sort(data); 3'H 1T
insertSort(data); smM*HDK
} C)r!;u)AZH
/** D/$$"AT
* @param data -m.SN>V
*/ f;k'dqlv
private void insertSort(int[] data) { >%~%O`+
int temp; A\jX #gg
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RU1+-
} \v'\
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} N!fTt,
} 1qw*mV;W)_
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} YRy5.F%?
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归并排序: CqRG !J
V*m@Rs!)2
package org.rut.util.algorithm.support; G@O~*k1v
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import org.rut.util.algorithm.SortUtil; q~^qf
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/** h7( R/R f
* @author treeroot p)$DpNL% p
* @since 2006-2-2 i5>]$j1/
* @version 1.0 F|3 =Cl
*/ U/e$.K3v
public class MergeSort implements SortUtil.Sort{ 39w|2%(O.
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/* (non-Javadoc) _IA@X. )?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XL/?v"
/
*/ `(r[BV|h}
public void sort(int[] data) { gsqpQq7
int[] temp=new int[data.length]; yJ(p-3O5
mergeSort(data,temp,0,data.length-1); MmjeFv
} uHv9D%R
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private void mergeSort(int[] data,int[] temp,int l,int r){ ^b{w\HZ
int mid=(l+r)/2; Wn(pz)+Y
if(l==r) return ; _oB!-#
mergeSort(data,temp,l,mid); w+P?JR!)+
mergeSort(data,temp,mid+1,r); u'o."J^&'
for(int i=l;i<=r;i++){ Wb_'X |"u
temp=data; Wgt[ACioN
} OIuEC7XM^C
int i1=l; C>d_a;pX
int i2=mid+1; z8SrZ#mg
for(int cur=l;cur<=r;cur++){ /mb?C/ CI
if(i1==mid+1) A{5^A)$
data[cur]=temp[i2++]; *20$u% z2
else if(i2>r) `Ns$HV
data[cur]=temp[i1++]; ZYy,gu<
else if(temp[i1] data[cur]=temp[i1++]; Q)\~=/Lb
else y^o*wz:D*
data[cur]=temp[i2++]; bIR AwktD
} Q1fJ`A=
} r*|#*"K"a
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} ?I6us X9$
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改进后的归并排序: q1Ja*=r
A8?uCkG
package org.rut.util.algorithm.support; @O7hY8",
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import org.rut.util.algorithm.SortUtil; q;dg,Om
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/** *CHLs^)
* @author treeroot vjy 59m
* @since 2006-2-2 yw|O,V<4N
* @version 1.0 3x=f}SO&
*/ <+1d'VQ2
public class ImprovedMergeSort implements SortUtil.Sort { hrpql_9.
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private static final int THRESHOLD = 10; =Fq"lq %
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/* x
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* (non-Javadoc) vJheM*C
* _;]
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X~DI d
*/ "v
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public void sort(int[] data) { SH"e x,=
int[] temp=new int[data.length]; Iv6(Z>pAB
mergeSort(data,temp,0,data.length-1); ^f:oKKaAW;
} iWbrX1
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private void mergeSort(int[] data, int[] temp, int l, int r) { > .L\ >
int i, j, k; 1 m)WM,L
int mid = (l + r) / 2; JG%y_
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if (l == r) '%@fW:r~
return; ,O[HX?>
if ((mid - l) >= THRESHOLD) jG"n);WF
mergeSort(data, temp, l, mid); I`?6>Z+%)
else ?U~9d"2=
insertSort(data, l, mid - l + 1); <P)vx
if ((r - mid) > THRESHOLD) K,7IBv,B[
mergeSort(data, temp, mid + 1, r); /8\gT(@
else 1epj/bB&