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。 ;KgDVq5
插入排序: dOVu D(
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package org.rut.util.algorithm.support; %+oqAYm+s
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import org.rut.util.algorithm.SortUtil; W5>emx'>
/** =w/AJ%6
* @author treeroot aU*}.{<!
* @since 2006-2-2 Aw&0R" {
* @version 1.0 uH)?`I\zrd
*/ PYTwyqS
public class InsertSort implements SortUtil.Sort{ <m~{60{
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/* (non-Javadoc) x@3cZd0j#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v.hQ9#:
*/ $b)t`r+
public void sort(int[] data) { J-qUJX~4c
int temp; K>TEt5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mpQu:i|W
} e*Y<m\*
} t N4-<6
} dZX;k0
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} @9~x@[
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冒泡排序: jig3M N
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package org.rut.util.algorithm.support; +ViL"
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import org.rut.util.algorithm.SortUtil; O[\mPFu5
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/** Yr>0Qg],
* @author treeroot 5H1N]v+
* @since 2006-2-2 jib pZ)
* @version 1.0 w|Ry)[
*/ .PV(MV
public class BubbleSort implements SortUtil.Sort{ _%Yi^^
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/* (non-Javadoc) qHT73_R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T8&eaAoo
*/ (UCCEQq5
public void sort(int[] data) { I0qJr2[X~
int temp; o1"N{Eu
for(int i=0;i for(int j=data.length-1;j>i;j--){ :@a0h
if(data[j] SortUtil.swap(data,j,j-1); 62MQ+H
} )FPn_p#3]
} 'oH3|
} 9C=*>I27?
} *?$M=tH
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} G:y+yE4
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选择排序: 9gglyoZ%
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package org.rut.util.algorithm.support; e ;^}@X
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import org.rut.util.algorithm.SortUtil; z"mpwmv5
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/** 3o0ZS^#eB
* @author treeroot t\a|Gp W
* @since 2006-2-2 fms(_Q:R?
* @version 1.0 QleVW
*/ 0TSB<,9a[
public class SelectionSort implements SortUtil.Sort { bC~I}^i\
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/* 7!h>
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* (non-Javadoc) BFg&@7.X
* 0 q1x+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ez.a
*/ tbiM>qxB
public void sort(int[] data) { Y/"t!
int temp; I8`$a
for (int i = 0; i < data.length; i++) { V"'PA-z3
int lowIndex = i; 6y1\ar(A
for (int j = data.length - 1; j > i; j--) { Sk1t~
if (data[j] < data[lowIndex]) { ZO%iyc%
lowIndex = j; )7[#Ti
} HyOrAv
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} >T c\~l
SortUtil.swap(data,i,lowIndex); EU>`$M&w-
} R dwt4A+
} t*-cX
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} ?w'86^_z
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Shell排序: {V[}#Mf
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package org.rut.util.algorithm.support; h.F=Fhx/1
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import org.rut.util.algorithm.SortUtil; EG|dN(qh
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/** FKu8R%9xn%
* @author treeroot YURMXbj
* @since 2006-2-2 3
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* @version 1.0 v=0G&x=/
*/ 7pciB}$2
public class ShellSort implements SortUtil.Sort{ )RvX}y-
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/* (non-Javadoc) :?BK A0E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z F.@rXl
*/ ^]D1':
public void sort(int[] data) { 5Gy#$'kdf
for(int i=data.length/2;i>2;i/=2){ 5B4/2q=
for(int j=0;j insertSort(data,j,i); FE&:?
} FX|&o>S(8
} A)>#n)
insertSort(data,0,1); {vCtp
} \#t)B
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/** KNd<8{'.
* @param data =gM@[2
* @param j Zx_^P:rL
* @param i _UPfqC ?
*/ SeDk/}/~e
private void insertSort(int[] data, int start, int inc) { Yg3nT:K_Y&
int temp; @x+2b0 b
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); nWY^?e'S
} $=N?[h&4
} qx[c0X!
} ?zm]KxIC
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} +jwHYfAK)
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快速排序: ~Ss,he]Er
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package org.rut.util.algorithm.support; o!":mJy
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import org.rut.util.algorithm.SortUtil; o25rKC=o
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/** +|,4g_(j
* @author treeroot DJ:'<"zH7
* @since 2006-2-2 R8Vf6]s_
* @version 1.0 ucx02^uA
*/ +lqGf
public class QuickSort implements SortUtil.Sort{ uI/
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/* (non-Javadoc) !EhKg)y=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X&?s:A
*/ @i; )`k5b
public void sort(int[] data) { f(Of+>
quickSort(data,0,data.length-1); J4"Fj, FS
} TjEXR$:<
private void quickSort(int[] data,int i,int j){ KddCR&
int pivotIndex=(i+j)/2; h&$h<zL[
file://swap XH$r(@Z\7
SortUtil.swap(data,pivotIndex,j); UgC65O2
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int k=partition(data,i-1,j,data[j]); Xi98:0<=
SortUtil.swap(data,k,j); ]2wxqglh)
if((k-i)>1) quickSort(data,i,k-1); hDW!pnj1
if((j-k)>1) quickSort(data,k+1,j); ~(QfVpRnV=
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} WI/tWj0
/** E>|X'I?r^
* @param data wgS,U}/i
* @param i @a?7D;+<
* @param j MVsFi]-
* @return y(p_Unm
*/ zl|z4j'Irc
private int partition(int[] data, int l, int r,int pivot) { E=p+z"Ui
do{ EJ9hgE
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c>B1cR
SortUtil.swap(data,l,r); "s(~k
} Go)$LC0Mi
while(l SortUtil.swap(data,l,r); &3[oM)-V
return l; +nDy b
} :hX[8u
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} ~P1~:AT
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改进后的快速排序: $Iwvecn?I
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package org.rut.util.algorithm.support; L=4+rshl!_
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import org.rut.util.algorithm.SortUtil; X g6ezlW
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/** ?l0Qi
* @author treeroot hJ}i+[~be
* @since 2006-2-2 qz-QVY,
* @version 1.0 dI{DiPho
*/ U#` e~d t<
public class ImprovedQuickSort implements SortUtil.Sort { YX0ysE*V:&
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private static int MAX_STACK_SIZE=4096; u5(8k_7
private static int THRESHOLD=10; E#B-JLMGl
/* (non-Javadoc) *2G6Q
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d~LoHp
*/ +xFn~b/
public void sort(int[] data) { r7m~.M+W"
int[] stack=new int[MAX_STACK_SIZE]; 'a['lF
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int top=-1; 1@F-t94I
int pivot; H3A$YkK [
int pivotIndex,l,r; >
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stack[++top]=0; =RQF::[h
stack[++top]=data.length-1; jf~](TK
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while(top>0){ \i%'M%
int j=stack[top--]; +[7~:e}DZ
int i=stack[top--]; )6OD@<r{
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pivotIndex=(i+j)/2; i9;
pivot=data[pivotIndex]; D}_.D=)
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SortUtil.swap(data,pivotIndex,j); $%y q[$^
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file://partition AUnfhk@$
l=i-1; 3gA %Q`"
r=j; Fc~G*Gz~Z|
do{ Hn|W3U
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A3jxjQ
SortUtil.swap(data,l,r); AkhG~L
} `Ij@;=(
while(l SortUtil.swap(data,l,r); d54iZ`
SortUtil.swap(data,l,j); W0qR?jc
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if((l-i)>THRESHOLD){ #-/W?kD
stack[++top]=i; .ZTvOm'mB^
stack[++top]=l-1; 82r8K|L.<y
} s|=lKa]d!"
if((j-l)>THRESHOLD){ 7EJ2 On
stack[++top]=l+1; @N=vmtLP
stack[++top]=j; D|-]<r1"
} +jm,nM9
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} >Bt82ibN
file://new InsertSort().sort(data); T[oC='I+O
insertSort(data); 2~4:rEPJ:
} /0s1;?
/** A;oHji#*
* @param data 3:J>-MO
*/ VD;*UkapZx
private void insertSort(int[] data) { ~tDYo)hH8
int temp; +7_qg
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t R^f]+Up
} ++cS^ Lo
} lx)^wAO4
} T5XXC1+
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} ~ao:9ynY
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归并排序: M\ATT%b:
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package org.rut.util.algorithm.support; w"hd_8cO
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import org.rut.util.algorithm.SortUtil; 7'0Vb!(
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/** n]%-2`}(
* @author treeroot zl0{lV
* @since 2006-2-2 }EK{UM9y
* @version 1.0 (s};MdXIz
*/ ?Ga8.0Z~KT
public class MergeSort implements SortUtil.Sort{ s9- qR_
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/* (non-Javadoc) TnrBHaxbo4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W06aj ~7Z
*/ HsY5wC
public void sort(int[] data) { @]3\*&R}
int[] temp=new int[data.length]; `7"="T~ *
mergeSort(data,temp,0,data.length-1); \8vP"Kr
} Q\Ek U.[I
8$( I! ;
private void mergeSort(int[] data,int[] temp,int l,int r){ DiFLat]X
int mid=(l+r)/2; I G1];vX
if(l==r) return ; =LW!$p
mergeSort(data,temp,l,mid); 2 bc&sU)X
mergeSort(data,temp,mid+1,r); U^m#!hp
for(int i=l;i<=r;i++){ %:3XYO.w-
temp=data; dGKo!;7{
} VjQ&A#
int i1=l; '|8dt "C
int i2=mid+1; dNACE*g;q
for(int cur=l;cur<=r;cur++){ 0eY!Z._^
if(i1==mid+1) J1w;m/oV
data[cur]=temp[i2++]; +nYFLe
else if(i2>r) kK&w5'
data[cur]=temp[i1++]; f$I=oN
else if(temp[i1] data[cur]=temp[i1++]; 4 m:h&^`N
else g5V \R*{
data[cur]=temp[i2++]; mU5Ox4>&9
} $1f2'_`8~
} mxNd_{n
*X0>Ru[
} 7;jD>wp9D
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改进后的归并排序: 4BCPh:
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package org.rut.util.algorithm.support; jTa\I&s