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。 %#]/]B/4
插入排序: zWdz9;=_
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package org.rut.util.algorithm.support; OL&VisJ{75
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import org.rut.util.algorithm.SortUtil; G~4|]^`g
/** ht5:kt`F
* @author treeroot 7nPm{=BG
* @since 2006-2-2 Y7yzM1?t
* @version 1.0 @qsOWx`l$
*/ ^A;ec
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public class InsertSort implements SortUtil.Sort{ y|.dM.9V
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/* (non-Javadoc) `,wX&@sN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l%xeM!}
*/ klj.\wg/p{
public void sort(int[] data) { h"N#/zQ
int temp; Qnp.Na[JV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); piiO5fK|
} gE!`9 #..
} t`4o&vsj=
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} "\1V^2kMr
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冒泡排序: ]JHY(H2|
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package org.rut.util.algorithm.support; E!>l@
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import org.rut.util.algorithm.SortUtil; z: W1(/W~
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/** o Bp.|8-
* @author treeroot n%P,"V
* @since 2006-2-2 "[]J[!}x
* @version 1.0 d e~3:
*/ SVyJUd_
public class BubbleSort implements SortUtil.Sort{ c\eT`.ENk
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/* (non-Javadoc) X`n*M]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 27jZ~Bp$
*/ 9!6yo
public void sort(int[] data) { -
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int temp; bk-aj'>+
for(int i=0;i for(int j=data.length-1;j>i;j--){ |teDe6\m
if(data[j] SortUtil.swap(data,j,j-1); 4?&CK
} s((_^yf
} 3H47 vm(`
} su]ywVoRT
} bYH! P/
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选择排序: |k9A*7I
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package org.rut.util.algorithm.support; ? &;d)TQ
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import org.rut.util.algorithm.SortUtil; OL"So
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/** zoBjrAyD
* @author treeroot QCWk[Gx
* @since 2006-2-2 cM'5m
* @version 1.0 =8fZG
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*/ ;42D+q=s
public class SelectionSort implements SortUtil.Sort { ;w}5:3+
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/* DWH)<\?
* (non-Javadoc) Uyyw'Ni
* !P26$US%P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {*CLWs4
*/ p^``hP:J
public void sort(int[] data) { .el_pg
int temp; KPA5 X]
for (int i = 0; i < data.length; i++) { MXhRnVz"W
int lowIndex = i; 57b;{kl
for (int j = data.length - 1; j > i; j--) { N6<23kYM
if (data[j] < data[lowIndex]) { xX.Ox
lowIndex = j; >KXT2+w
} v)2@;Q
} K\ \UF
SortUtil.swap(data,i,lowIndex); |KC3^
} 9? W38EF
} .tb~f@xL
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Shell排序: T;< >"" T
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package org.rut.util.algorithm.support; %tzz3Y
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import org.rut.util.algorithm.SortUtil; ?Xo9,4V1
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/** K~WwV8c9;
* @author treeroot n%<.,(.(S
* @since 2006-2-2 n{Mj<\kL
* @version 1.0 &,&oTd.
*/ Ve8`5
public class ShellSort implements SortUtil.Sort{ [P{Xg:0
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/* (non-Javadoc) L4;n$=e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5y"yd6O]O5
*/ MJXm7<(
public void sort(int[] data) { ix&hsNzD
for(int i=data.length/2;i>2;i/=2){ lv ^=g
for(int j=0;j insertSort(data,j,i); I/)dXk~
} /HDX[R
} {+t'XkA
insertSort(data,0,1); ~ab"q%
} {hRAR8
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/** O!]wJ
* @param data <$njU=YE&
* @param j ^?xXP=/
* @param i Z?hBn`.
*/ }RUC#aW1
private void insertSort(int[] data, int start, int inc) { D#m+w
int temp; D0k7)\puQ
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D1O7S]j
} +-~;?wA
} 28BiuxVW
} >k\*NW
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} Ruk6+U
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快速排序: ]-fZeyY$
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package org.rut.util.algorithm.support; y~S[0]y>
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import org.rut.util.algorithm.SortUtil; FJL9x,%6
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/** iy: ;g
* @author treeroot Y9w=[[1
* @since 2006-2-2 \K?./*
* @version 1.0 Y*Q(v
*/
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public class QuickSort implements SortUtil.Sort{ Z21XlbK
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/* (non-Javadoc) vP~F+z
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "
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*/ Q#g
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public void sort(int[] data) { @xkM|N?
quickSort(data,0,data.length-1); _mkI;<d]$T
} wc,y+C#V
private void quickSort(int[] data,int i,int j){ In;z\"NN4
int pivotIndex=(i+j)/2; uN\9cQ
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SortUtil.swap(data,pivotIndex,j); &&<^wtznO
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int k=partition(data,i-1,j,data[j]); #uXOyiE
SortUtil.swap(data,k,j); X7 ZaQ .
if((k-i)>1) quickSort(data,i,k-1); vp_ $6
if((j-k)>1) quickSort(data,k+1,j); <WbD4Q<3?
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} f@/qW!o
/** 2\5@_U^)h
* @param data 9H)uTyuNi
* @param i ntkinbbD
* @param j J/=A f
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* @return 7kwG_0QO
*/ R{rV1j#@!a
private int partition(int[] data, int l, int r,int pivot) { AeJM[fCMa
do{ &S-& 'ZAY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); E8dp
SortUtil.swap(data,l,r); P<&/$x6
} ` k\1vum
while(l SortUtil.swap(data,l,r); mcX akWmi
return l; 7lj-Z~1
} 7S7!
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} |zT0g]WH
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改进后的快速排序: -$kJERvy
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package org.rut.util.algorithm.support; ^/BE=$E\
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import org.rut.util.algorithm.SortUtil; 0l6djN
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/** % b&BLXW
* @author treeroot /uc/x+(_
* @since 2006-2-2 W|Tew-H{h_
* @version 1.0 Rj&7|z
*/ Gehl/i-
public class ImprovedQuickSort implements SortUtil.Sort { U+RPn?Q
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private static int MAX_STACK_SIZE=4096; mT>p:G
private static int THRESHOLD=10; PmY:sJ{M
/* (non-Javadoc) E9:hK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0X-2).nu
*/ \O?B9_
public void sort(int[] data) { ri;M7rg`.{
int[] stack=new int[MAX_STACK_SIZE]; Zs{R O
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int top=-1; Y_B 4s-
int pivot; iLgt_@g
int pivotIndex,l,r; {.OoOqq9
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stack[++top]=0; Om"3Q/&
stack[++top]=data.length-1; Mfr#IzNHN
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while(top>0){ UmE{>5Pt
int j=stack[top--]; \|t0~sRwh
int i=stack[top--]; _Xv/S_yW
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pivotIndex=(i+j)/2; @[RY8~
pivot=data[pivotIndex]; *Kkw,qp/
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SortUtil.swap(data,pivotIndex,j); "3MUrIsB>
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do{ `4q}D-'TF8
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )It4al^\
SortUtil.swap(data,l,r); <^_?hN8.
} 1Qu,]i`
while(l SortUtil.swap(data,l,r); ;wxt<
SortUtil.swap(data,l,j); "6.p=te
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if((l-i)>THRESHOLD){ -c?wEqa~2
stack[++top]=i; N8q Z{CWn
stack[++top]=l-1; ~?5m5z O
} kAliCD)
if((j-l)>THRESHOLD){ ')-(N
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stack[++top]=l+1; EM/+1
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stack[++top]=j; ]+dl=SmF
} t
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} K-C,+ eI
file://new InsertSort().sort(data); F s\P/YX
insertSort(data); cB}2(`z9
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} ]e~^YZOs
/** TkoXzG8yE<
* @param data ;_aoM&
*/ F\rSYjMyk
private void insertSort(int[] data) { 7YjucPH#
int temp; vaOL6=[#:g
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f4T0Y["QA
} %pkq ?9
} I?g__u=n~
} r(T/^<
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