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。 ^~7ouA
插入排序: f]48>LRE8
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; D] +]Br8
/** L&hv:+3N
* @author treeroot 2k M;7:
* @since 2006-2-2 4x|\xg(
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* @version 1.0 4KB>O)YNg'
*/ W[t0hbVw
public class InsertSort implements SortUtil.Sort{ 1h#e-Oyff
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/* (non-Javadoc) 7~!F3WT{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nd,2EX<bE
*/ `&URd&ouJD
public void sort(int[] data) { .>
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int temp; GBYwS{4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;S+]Z!5LT
} J=6(
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冒泡排序: Ni>!b6Z`[
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package org.rut.util.algorithm.support; A5go)~x\
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import org.rut.util.algorithm.SortUtil; {<Y\flj{@m
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/** gN.n_!
* @author treeroot c\OLf_Uf
* @since 2006-2-2 P(aN6)D
* @version 1.0 vP'#x
*/ 0DX)%s,KO
public class BubbleSort implements SortUtil.Sort{ @1s
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/* (non-Javadoc) _*++xF1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +%R{j|8#
*/ t6Nkv;)>@
public void sort(int[] data) { [Gc9
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int temp; 5#~E[dr
for(int i=0;i for(int j=data.length-1;j>i;j--){ wL[{6wL
if(data[j] SortUtil.swap(data,j,j-1); m1Xc3=Y
} KJ
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} FD/=uIXH2
} @ \*Zq
} I lZ$Jd
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} sp6A*mwl
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选择排序: <=]:ED $V@
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package org.rut.util.algorithm.support; ht2J, 1t
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import org.rut.util.algorithm.SortUtil; /_r` A
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/** ZMGC@4^F
* @author treeroot -nqq;|%
* @since 2006-2-2 <3laNk
* @version 1.0 ]/7#[
*/ >
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public class SelectionSort implements SortUtil.Sort { t'[`"pp=
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/* :{%~L4$HI
* (non-Javadoc) ('+C $
* Q2"K!u]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S3^(L
*/ Bo0f`EC I
public void sort(int[] data) { K_%gda|l+
int temp; OlM3G^1e1
for (int i = 0; i < data.length; i++) { 814cCrr,o
int lowIndex = i; 0~BZh%s< (
for (int j = data.length - 1; j > i; j--) { (Q"~bP{F
if (data[j] < data[lowIndex]) { >cH}sNHy
lowIndex = j; 7
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} 4wPP/`
} 7n7UL0Oc1
SortUtil.swap(data,i,lowIndex); 2E0oLl[
} D~)bAPAD
} hVh,\d&2t
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} , 8o
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Shell排序: mXI'=Vo!S
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package org.rut.util.algorithm.support; yC7lR#N8j0
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import org.rut.util.algorithm.SortUtil; B? 9"Ztb
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/** ; jrmr`l=
* @author treeroot (#nB90E{*
* @since 2006-2-2 P>'29$1'
* @version 1.0 lQpl8>
*/ D&1(qi=x&
public class ShellSort implements SortUtil.Sort{ vw
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/* (non-Javadoc) Ks-$([_F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zGa
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*/ ,,;vG6^a
public void sort(int[] data) { NG?g(
for(int i=data.length/2;i>2;i/=2){ t(UdV
for(int j=0;j insertSort(data,j,i); ppnl bL^*
} o@ @| 4
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} XO}SPf-
insertSort(data,0,1); Wm/0Pi
} A}i>ys
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/** C)ic;!$Qhb
* @param data dte-2?%~j
* @param j wI?AZd;`'
* @param i s3=slWY=
*/ K+`deH_d
private void insertSort(int[] data, int start, int inc) { _z>%h>L|g
int temp; 'ql<R0g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u56F;y
} WQMoAPfqL
} yh{U!hG
} G-'CjiMu
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} -_bDbYL
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快速排序: oWq]\yT<`
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package org.rut.util.algorithm.support; ?=b#H6vs
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import org.rut.util.algorithm.SortUtil; d3NER} f4V
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/** {FR+a**
* @author treeroot 0@&/W-VXg
* @since 2006-2-2 Tn?D~?a*O
* @version 1.0 |Rz}bsrZ
*/ "g5MltH
public class QuickSort implements SortUtil.Sort{ E5Lq-
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/* (non-Javadoc) dRUmC H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \vE-;,
*/ rdH^"(
public void sort(int[] data) { N!<X%Ym
quickSort(data,0,data.length-1); y:k7eE"
} \mqrDaB
private void quickSort(int[] data,int i,int j){ Gn;^]8d
int pivotIndex=(i+j)/2; 6n
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SortUtil.swap(data,pivotIndex,j); Nhtc^DX
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int k=partition(data,i-1,j,data[j]); ~;uU{TT
SortUtil.swap(data,k,j); B^.:dn
if((k-i)>1) quickSort(data,i,k-1); .g_^! t
if((j-k)>1) quickSort(data,k+1,j); 'l3 DP
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} pL: r\Y:R
/**
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* @param data {x~r$")c?
* @param i xPJ@!ks9
* @param j Mtn{63cK
* @return i]& >+R<6
*/ 2#Qw
private int partition(int[] data, int l, int r,int pivot) { %K0Wm#)
do{ a[=ub256S
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9TEAM<b;
SortUtil.swap(data,l,r); [B j\h7G
} Q)5V3Q]@^
while(l SortUtil.swap(data,l,r); TXqtE("BDl
return l; !E^\)=E)P
} XE#$|Z
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} 2B+qS'OT
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改进后的快速排序: 9Z DbZc
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package org.rut.util.algorithm.support; E`|vu*l7
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import org.rut.util.algorithm.SortUtil; f67t.6Vw2+
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/** hb1eEn
* @author treeroot ViU5l*n;
* @since 2006-2-2 H>%L@Btw
* @version 1.0 !PgwFJ
*/ yoM^6o^,D
public class ImprovedQuickSort implements SortUtil.Sort { BY@l:y4
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private static int MAX_STACK_SIZE=4096; (^58$IW71
private static int THRESHOLD=10; zX6Q7Bc
/* (non-Javadoc) Y4[oa?G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k h6n(B\
*/ &,* ILz
public void sort(int[] data) { 1JV-X G6
int[] stack=new int[MAX_STACK_SIZE]; 27MwZz
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int top=-1; lkJe7 +s
int pivot; YR[I,j
int pivotIndex,l,r; orAr3`AR3
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stack[++top]=0; L0Ajj=
stack[++top]=data.length-1; :Xu9`5
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while(top>0){ N;4wbUPL7h
int j=stack[top--]; +K,T^<F;
int i=stack[top--]; )!;20Po
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pivotIndex=(i+j)/2; xl9S=^`=
pivot=data[pivotIndex]; R:[#OH.c
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SortUtil.swap(data,pivotIndex,j); u(8dsgR
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file://partition UK)wV
l=i-1; Uy?X-"UR
r=j; [kMWsiZ
do{ &AVX03P
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )5u#'5I>
SortUtil.swap(data,l,r); Iu^I?c[
} |W}D_2
while(l SortUtil.swap(data,l,r); :k2J
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SortUtil.swap(data,l,j); 0qm CIcg
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if((l-i)>THRESHOLD){ <YrsS-9
stack[++top]=i; O\h%ZLjfO
stack[++top]=l-1; g'2}Y5m$`
} !Z0S@]C
if((j-l)>THRESHOLD){ hsJGly5H
stack[++top]=l+1; |hX\ep
stack[++top]=j; R_"6E8N
} #}Bv/`t
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} n*Hx"2XF
file://new InsertSort().sort(data); @VyF'
?}
insertSort(data); ?QtM|e
} ]C{N4Ni^Z
/** .N7&Jy
* @param data 7^1K4%IPl
*/ w}8=sw
private void insertSort(int[] data) { l-5O5|C
int temp; B] Koi1B
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !j3Xzn9
} "]q0|ZdOwH
} - %?>1n
} 5@n|uJA
%}unlSTPP
} %VE FruM
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归并排序: }4Q3S1|U
Sg13Dp@x
package org.rut.util.algorithm.support; 5!jt^i]O
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import org.rut.util.algorithm.SortUtil; e}s,WC2-
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/** 21] K7
* @author treeroot pP%+@;
* @since 2006-2-2 WGo ryvEx
* @version 1.0 ?P}) Qa
*/ ?OGs+G
public class MergeSort implements SortUtil.Sort{ IvI;Q0E-3
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/* (non-Javadoc) "9Br)3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ClufP6'
*/ ca[*#xiJ
public void sort(int[] data) { COd~H
int[] temp=new int[data.length]; !Nbi&^k B
mergeSort(data,temp,0,data.length-1); )=5*iWe
} V'9OGn2v
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private void mergeSort(int[] data,int[] temp,int l,int r){ iztgk/(+G
int mid=(l+r)/2; !Wy&+H*0
if(l==r) return ; >n1UK5QD
mergeSort(data,temp,l,mid); |=W>4>
mergeSort(data,temp,mid+1,r); %v^qQWy=*
for(int i=l;i<=r;i++){ &m{~4]qWpM
temp=data; s}DNu<"g
} NkQain9
int i1=l; uL^X$8K;(
int i2=mid+1; R^.c
for(int cur=l;cur<=r;cur++){ MW0CqMi]T
if(i1==mid+1) 5UQ[vHMqI
data[cur]=temp[i2++]; S Z &[o&H
else if(i2>r) , _ xJ9_
data[cur]=temp[i1++]; k;.<DN
else if(temp[i1] data[cur]=temp[i1++]; UYpln[S
else rWBgYh
data[cur]=temp[i2++]; $<f+CtD4
} clr]gib
} YLV$#a3
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