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。 'Y5=A!*@tf
插入排序: CvqUaHW@
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package org.rut.util.algorithm.support; rE\.[mFI
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import org.rut.util.algorithm.SortUtil; cS"PIelR
/** {1W,-%
* @author treeroot U66oe3W
* @since 2006-2-2 K|.!)L
* @version 1.0 .,SWa;[iB
*/ \K(#
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public class InsertSort implements SortUtil.Sort{ dH0wVI<z
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/* (non-Javadoc) DJHE6XJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ '8fL)Zk
public void sort(int[] data) { D]d2opBLj
int temp; SZD@<3 Nb
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YR$d\,#R
} ">S.~'ds
} +6x:+9S
} ^os|yRzV*M
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} +IfU
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冒泡排序: $-f(.S
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package org.rut.util.algorithm.support; Mhg_z.Z
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import org.rut.util.algorithm.SortUtil; vm "dE4W=
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/** 7(KVA1P66
* @author treeroot "_e/O&-cH
* @since 2006-2-2 GZ/vUe
* @version 1.0 '>r"+X^W
*/ >"+bL6#
public class BubbleSort implements SortUtil.Sort{ ]}dAm S/
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/* (non-Javadoc) Toc="F`SW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W>`#`u
*/ .R{P%r
public void sort(int[] data) { B!z5P"C(~
int temp; }4"T#
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for(int i=0;i for(int j=data.length-1;j>i;j--){ F#XzhDs
if(data[j] SortUtil.swap(data,j,j-1);
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} ,Mw;kevw
} yS(tF`H[
} 00@y,V_]
} Tta+qjr
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} _M7NL^B&
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选择排序: x$aFJCL
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package org.rut.util.algorithm.support; Po82nKAh
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import org.rut.util.algorithm.SortUtil; $qj||zA
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/** *>p#/'_E
* @author treeroot #:3~I
* @since 2006-2-2 Ie8jBf -
* @version 1.0 .\+%Q)?h:
*/ '; Z!(r
public class SelectionSort implements SortUtil.Sort { `@|Kx\y4=j
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/* 0^rDf
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* (non-Javadoc) QAh6!<.;@
* j#)K/`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6@o *"4~Q
*/ h ?%]uFJC
public void sort(int[] data) { Qcr-|?5L
int temp; lVQy
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for (int i = 0; i < data.length; i++) { }Ii5[nRN
int lowIndex = i; 3F6=/
for (int j = data.length - 1; j > i; j--) { C!}9[X!7@:
if (data[j] < data[lowIndex]) { u|]`gsFZ\
lowIndex = j; %t\~3pw=
} p8Wik<'^
} MUd
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SortUtil.swap(data,i,lowIndex); o>Jr6:D(
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} #q%V|Ajq
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} s4{WPU9
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Shell排序: n:wZL&ZV0
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package org.rut.util.algorithm.support; ,a/<t"
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import org.rut.util.algorithm.SortUtil; 41V}6+$g
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/**
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* @author treeroot bR}{xHe
* @since 2006-2-2 Iib39?D W
* @version 1.0 i5 F9*
*/ R87e"m/C%
public class ShellSort implements SortUtil.Sort{ B> LL
*
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/* (non-Javadoc) fer~NlX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o7W1sD1O
*/ \6U$kMGde
public void sort(int[] data) { >AT T<U=
for(int i=data.length/2;i>2;i/=2){ V;#bcr=Z<J
for(int j=0;j insertSort(data,j,i); sjj*7i*
} e2PM^1{_
} `vPc&.-K
insertSort(data,0,1); w,QO!)j!
} 'P^6H$0
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/** >1n[Y- r
* @param data H(TY.
* @param j ]TmxCTVL
* @param i !:^lTvYWZH
*/ q|+`ihut
private void insertSort(int[] data, int start, int inc) { T[YGQT|B
int temp; wJQ"|
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); otgU6S7F
} ()>,L?y
} %!i|"FNc
} EecV%E
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} 1k8zAtuj
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快速排序: Cg!]x
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package org.rut.util.algorithm.support; A#6\5u
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import org.rut.util.algorithm.SortUtil; S EeDq/h
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/** vF ,iHzv
* @author treeroot +=/FKzT<
* @since 2006-2-2 WI$MT6
* @version 1.0 ,9C~%c0Pw
*/ C<.Ny,U
public class QuickSort implements SortUtil.Sort{ "/zIsn7
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/* (non-Javadoc) `bdCom
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #&cNR_"w
*/ ?U`~,oI0
public void sort(int[] data) { RN%*3{-
quickSort(data,0,data.length-1); ,' m<YTF
} *"pf3x6
private void quickSort(int[] data,int i,int j){ ]EhW
int pivotIndex=(i+j)/2; &7 YTz3aj
file://swap C&QT-|
SortUtil.swap(data,pivotIndex,j); [0(+E2/:2
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int k=partition(data,i-1,j,data[j]); d}.*hgk
SortUtil.swap(data,k,j); jxU z-U-
if((k-i)>1) quickSort(data,i,k-1); l?N|Gj;ZFZ
if((j-k)>1) quickSort(data,k+1,j); 7jZ=+2
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} sr&hQ
/** f;nO$h[Qb
* @param data kT+Idu
* @param i X. =%
* @param j Ae0jfTv
* @return mQ@A3/= `
*/ uP-I7l0i1
private int partition(int[] data, int l, int r,int pivot) { v{Rj,Ou
do{ o"Dk`L2
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2)A% 'Akf
SortUtil.swap(data,l,r); xSQ:#o=8G
} K6=i\
while(l SortUtil.swap(data,l,r); {v,O
return l; {F/0pvP9
} csPziH$wl
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} h}k/okG
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改进后的快速排序: mP@<UjxI
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package org.rut.util.algorithm.support; $X9`~Sv _
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import org.rut.util.algorithm.SortUtil; TA.ugF)h
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/** @nuMl5C-`
* @author treeroot ^11y8[[
* @since 2006-2-2 K|q5s]4I
* @version 1.0 <Oi65O_X
*/ %q~YJ*\
public class ImprovedQuickSort implements SortUtil.Sort { e-Xr^@M*Q
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private static int MAX_STACK_SIZE=4096; fr\"MP
private static int THRESHOLD=10; H} R/_5g
/* (non-Javadoc) fq@r6\TI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zJH#J=O
*/ B~[QmK
public void sort(int[] data) { ]Cfjs33H
int[] stack=new int[MAX_STACK_SIZE]; OM]d}}=Y
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int top=-1; yl>V'
int pivot; 29xm66
int pivotIndex,l,r; x.+ r.cAXH
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stack[++top]=0; ']N1OVw^vf
stack[++top]=data.length-1; -A?6)ggf.
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while(top>0){ &DX&*Xq2
int j=stack[top--]; /Ria"lLv
int i=stack[top--]; +:a#+]g
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pivotIndex=(i+j)/2; ig Q,ZY1
pivot=data[pivotIndex]; >tmv3_<=
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SortUtil.swap(data,pivotIndex,j); Ej\Me
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file://partition N-0kB vo
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do{ }#u.Of`6"
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));
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SortUtil.swap(data,l,r); =RA8^wI
} Oy,7>vWQI
while(l SortUtil.swap(data,l,r); H2ZRUFu
SortUtil.swap(data,l,j); !O`aaLc
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if((l-i)>THRESHOLD){ Ft&ARTsa*
stack[++top]=i; 7s2 l 3
stack[++top]=l-1; Io|3zE*<
} m| /?((s
if((j-l)>THRESHOLD){ 4"om;+\
stack[++top]=l+1; I%^Bl:M
stack[++top]=j; K1th>!JW'
} FZvh]ZX
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} BHNcE*U}@?
file://new InsertSort().sort(data); b"DV8fdX
insertSort(data); 6T?$m7c
}
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/** }{R?i,j(
* @param data CFLWo1
*/ c#ahFpsnlw
private void insertSort(int[] data) { 6njwrqo
int temp; n A<#A
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F}f/cG<X
} c'wxCqnE
} K&Sz8# +
} Q7!";ol2
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} }nsxo5WP
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归并排序: Jq5](F!z
K P1;u #v
package org.rut.util.algorithm.support; T3_3k.,|
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import org.rut.util.algorithm.SortUtil; lpy(un
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/** 8wi2&j_
* @author treeroot m0}1P]dc
* @since 2006-2-2 0qCx.<"p8#
* @version 1.0 [P3].#"]M=
*/ PnUYL.v
public class MergeSort implements SortUtil.Sort{ !_No\O
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/* (non-Javadoc) )S8 fFV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pV^(8!+
*/ &OMe'P
public void sort(int[] data) { e5GJ:2sH
int[] temp=new int[data.length]; 6T qs6*
mergeSort(data,temp,0,data.length-1); 7)i6L'r
} h1(GzL%i_
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private void mergeSort(int[] data,int[] temp,int l,int r){ fz[-pJ5[
int mid=(l+r)/2; )B!64'|M
if(l==r) return ; F?!X<N{
mergeSort(data,temp,l,mid); 1.U9EuI
mergeSort(data,temp,mid+1,r); 1v?|n8
for(int i=l;i<=r;i++){ RT~6 #Caf
temp=data; MYlPG1X=?
} ta*6xpz-\Q
int i1=l; 2Hp<(
int i2=mid+1; A.v'ws+VDP
for(int cur=l;cur<=r;cur++){ )LdS1%
if(i1==mid+1) o6v'`p'
data[cur]=temp[i2++]; # cAX9LV
else if(i2>r) A*a:#'"*N
data[cur]=temp[i1++]; >!gW]{
else if(temp[i1] data[cur]=temp[i1++]; &^I2NpT
else \7d T]VV
data[cur]=temp[i2++]; 67{3/(`x
} -s!cZ3
} 0sR+@\
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} ar%!h~
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改进后的归并排序: R #\o*Ta
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package org.rut.util.algorithm.support; %8]~+#]p
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import org.rut.util.algorithm.SortUtil; !D!1%@
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/** yQ/E0>Uj!
* @author treeroot N+#lS7
* @since 2006-2-2 B=;pwX
* @version 1.0 HC$rC"f
*/ xV+cX*4h
public class ImprovedMergeSort implements SortUtil.Sort { Q$B\)9`v[
*@-a{T}
private static final int THRESHOLD = 10; AnD#k]
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/* l.Yq4qW
* (non-Javadoc) C"[d bh!
* dJf#j?\[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O V+|j
*/ @@QB,VS;{<
public void sort(int[] data) { ol #4AU`
int[] temp=new int[data.length]; so]p1@K
mergeSort(data,temp,0,data.length-1); "P9SW?',
} W02t6 DW
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private void mergeSort(int[] data, int[] temp, int l, int r) { =kiDW6
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int i, j, k; 7FYq6wi
int mid = (l + r) / 2; vkK8D#K
if (l == r) c)q'" r
return; '#ow9w+^
if ((mid - l) >= THRESHOLD) -n#fj;.2_
mergeSort(data, temp, l, mid); 1<n'F
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else j3$\+<m]
insertSort(data, l, mid - l + 1); Ae3=o8p
if ((r - mid) > THRESHOLD) tsys</E&
mergeSort(data, temp, mid + 1, r); "NOll:5"(
else %'3Y?d
insertSort(data, mid + 1, r - mid); rWS],q=c
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for (i = l; i <= mid; i++) { ~z$+uK
temp = data; }Lc8tj<
} ZBxV&