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。 GQ_KYS{
插入排序: ?ukw6T
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package org.rut.util.algorithm.support; BD g]M/{
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import org.rut.util.algorithm.SortUtil; W,q @ww u
/** nHK(3Z4G
* @author treeroot lQA5HzC\
* @since 2006-2-2 50UdY9E_v}
* @version 1.0 #6sz@X fV
*/ @Z)|_
public class InsertSort implements SortUtil.Sort{ \l+v,ELX=
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/* (non-Javadoc) %Bq~b$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bx\&7|,x
*/ DM.lQ0xk
public void sort(int[] data) { r8k (L{W
int temp; f^c+M~\JKj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qsj{0 Go
} p [ O6
} A~ya{^}
} sXKkZ+2q
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} LZ*8YNp1'
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冒泡排序: 9tiZIm93]
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package org.rut.util.algorithm.support; Uqr>8|t?
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import org.rut.util.algorithm.SortUtil; +9)JtmoL
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/** /-=fWtA
* @author treeroot lFBdiIw
* @since 2006-2-2 Aq i:h]x
* @version 1.0 +X?ErQm
*/ ~ELY$G.xl
public class BubbleSort implements SortUtil.Sort{ Gvb2>ZN
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/* (non-Javadoc) x`CjFaE~F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #A63?kDE&&
*/ 8-$t7bV5
public void sort(int[] data) { !oLn=
int temp; sJHVnMA
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4WT[(
if(data[j] SortUtil.swap(data,j,j-1); nF3}wCe)
} &|>@K#V8-;
} +ikSa8)*i
} 9u=A:n\
} HR>Y?B{
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} fHt \KP
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选择排序: oqrx7+0{
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package org.rut.util.algorithm.support; }\4yU=JPK
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import org.rut.util.algorithm.SortUtil; 5Rqdo\vE
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/** "k zKQ~
* @author treeroot *D5 xbkH=.
* @since 2006-2-2 I16FVdUun4
* @version 1.0 ;Iu _*U9)
*/ ]4:QqdV
public class SelectionSort implements SortUtil.Sort { K.tNV{OL
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/* {DO 9%ej)
* (non-Javadoc) !V|{(>+<
* (m]l -Re
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ["Zvwes#7
*/ G|i0n
public void sort(int[] data) { ~id6^#&>
int temp; zAgX{$/Fg
for (int i = 0; i < data.length; i++) { Z0gtliJ@
int lowIndex = i; ;QI9 OcE@/
for (int j = data.length - 1; j > i; j--) { D
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if (data[j] < data[lowIndex]) { p1N}2]e
lowIndex = j; IQqUFP$8g
} *>fr'jj1$
} *^>"
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SortUtil.swap(data,i,lowIndex); +Z`=iia>
} y6(PG:L
} r. 82RoG?G
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} ?Uql30A
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Shell排序: _!xrBdaJ
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package org.rut.util.algorithm.support; 8ud12^s$
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import org.rut.util.algorithm.SortUtil; O&!R7T
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/** 6St=r)_
* @author treeroot >$Y/B=e
* @since 2006-2-2 87
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* @version 1.0 X [Y0r
*/ Q14zc0N
public class ShellSort implements SortUtil.Sort{ ay"jWL-
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/* (non-Javadoc) `46~j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g`fG84
*/ Ni~IY#
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public void sort(int[] data) { dsTX?E<R
for(int i=data.length/2;i>2;i/=2){ G
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for(int j=0;j insertSort(data,j,i); /wDf,Hduz
} bY_'B5$.^2
} C'R9Nn'
insertSort(data,0,1); qqDg2,Yb
} Z\
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/** {f06Ki
* @param data @SfQbM##%
* @param j IDct!53~
* @param i k
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*/ xGs}hVlZiC
private void insertSort(int[] data, int start, int inc) { <kB:`&X<\
int temp; d$IROZK-D
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); H'AN osv
} Xhe& "rM
} Emlj,c<?j
} *)m:u :
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} \ `Hp/D1
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快速排序: Ny^ 1#R
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package org.rut.util.algorithm.support; c5]Xqq,
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import org.rut.util.algorithm.SortUtil; 9qx4F<
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/** uq5?t
* @author treeroot 4`O[U#?
* @since 2006-2-2 $;v! ,>
* @version 1.0 ?(ORk|)kU
*/ w8lrpbLh
public class QuickSort implements SortUtil.Sort{ zx@!8Z
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/* (non-Javadoc) r]9-~1T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }M4dze
*/ A6(Do]M
public void sort(int[] data) { Y?^liI`#
quickSort(data,0,data.length-1); \'|n.1Fr
} Jr!^9i2j'
private void quickSort(int[] data,int i,int j){ {-A|f
int pivotIndex=(i+j)/2; $dM_uSt
file://swap i{$-[*WHiV
SortUtil.swap(data,pivotIndex,j); &'6/H/J
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int k=partition(data,i-1,j,data[j]); S:1[CNL;
SortUtil.swap(data,k,j); CPB{eQeDuv
if((k-i)>1) quickSort(data,i,k-1); Es>' N3A
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if((j-k)>1) quickSort(data,k+1,j); 6Bq_<3P_
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} A f'&, 1=q
/** ~5
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* @param data BX_yC=S
* @param i kcS7)"/ zC
* @param j i1evB9FZ1z
* @return $J1`.Q>)4
*/ HK)m^!=
private int partition(int[] data, int l, int r,int pivot) { I\*6
>
do{ %ap(=^|5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); SkuR~!
SortUtil.swap(data,l,r); b<FE
} ('x]@
while(l SortUtil.swap(data,l,r); 4,y7a=qf3
return l; f*%kHfaXgN
} !Yof%%m$;
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} U["0B8
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改进后的快速排序: U7WYS8
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package org.rut.util.algorithm.support; E#!N8fQ
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import org.rut.util.algorithm.SortUtil; c64^u9
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/** l'I:0a
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* @author treeroot izP)t
* @since 2006-2-2 C0N
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* @version 1.0 l"ms:v
*/ B[8bkFS>]
public class ImprovedQuickSort implements SortUtil.Sort { \'~
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private static int MAX_STACK_SIZE=4096; '0Cp
private static int THRESHOLD=10; ,HP }}K+S
/* (non-Javadoc) }=X: F1S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o`f^ m
*/ q|*^{(tWs
public void sort(int[] data) { 3(e_2v
int[] stack=new int[MAX_STACK_SIZE]; NP;W=A F
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int top=-1; tV!?Ol
int pivot; ^PEw#.WG
int pivotIndex,l,r; "Z&.m..gc
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stack[++top]=0; "t^v;?4
stack[++top]=data.length-1; G*IP?c>=
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while(top>0){ ,X4b~)
int j=stack[top--]; _(-jk4 L
int i=stack[top--]; <WP@q&^k\
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pivotIndex=(i+j)/2; Zv!`R($
pivot=data[pivotIndex]; qfsPX6]
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SortUtil.swap(data,pivotIndex,j); cWAw-E5
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file://partition 0&s6PS%
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r=j; lpG%rN!
do{ ^/BGOBK
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); k6C XuU
SortUtil.swap(data,l,r); ;VE y{%nF
} `X<B+:>v-
while(l SortUtil.swap(data,l,r); >Y>R1b%
SortUtil.swap(data,l,j); JP8}+
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if((l-i)>THRESHOLD){ }JFTe
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stack[++top]=i; t5{P'v9J
stack[++top]=l-1; @v2<T1UC
} =TD`P et
if((j-l)>THRESHOLD){ Z:9 Q~}x8
stack[++top]=l+1; sZrVANyqb
stack[++top]=j; gGMfy]]R
} w0!$ow.l
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} Jk*cuf`rq
file://new InsertSort().sort(data); @` KYgjjH
insertSort(data); ,;,B7g
} krfXvQJwJ
/** .D W>c}1
* @param data xFF!)k #
*/ ,4'gj0
private void insertSort(int[] data) { H*0Y_H=
int temp; c`<2&ke
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3y)\dln
} 2j+w5KvU
} ~xd?y*gk;
} 9[/0
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} s70Z&3A
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归并排序: +Kk1[fh-
0j@mzd2
package org.rut.util.algorithm.support; V}V->j*
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import org.rut.util.algorithm.SortUtil; necY/&Ld-
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/** iaL@- dg
* @author treeroot ~YH?wdT
* @since 2006-2-2 i >3`V6
* @version 1.0 AA5G`LiT
*/ a/ Ac^!(
public class MergeSort implements SortUtil.Sort{ k o@ej^
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/* (non-Javadoc) MtJ-pa~n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :{a< ~n`
*/ pyhXET
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public void sort(int[] data) { tz):$1X_
int[] temp=new int[data.length]; $0[T<]{/?
mergeSort(data,temp,0,data.length-1); S"!6]!~^
} ZN8j})lE
# `=Zc7gf
private void mergeSort(int[] data,int[] temp,int l,int r){ =2&\<Q_Fi
int mid=(l+r)/2; b~zSsws.
if(l==r) return ; 'OnfU{Ai
mergeSort(data,temp,l,mid); bqbG+g
mergeSort(data,temp,mid+1,r); ]q"&V\b
for(int i=l;i<=r;i++){ PIH\*2\/
temp=data; 1h@qcom9K_
} @JGmOwZ
int i1=l; 4vg3F(
int i2=mid+1; :$D*ab^^P
for(int cur=l;cur<=r;cur++){ ZO/e!yju
if(i1==mid+1) uq3pk3
)W9
data[cur]=temp[i2++]; #}#m\=0
else if(i2>r) ob>)F^.iS
data[cur]=temp[i1++]; eB~\~@
else if(temp[i1] data[cur]=temp[i1++]; .,u>WIUxj
else OQumAj
data[cur]=temp[i2++]; eu5te0{G
} KSs1EmB
} rf0Z5.
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} g}%ODa !H
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改进后的归并排序: h8(#\E
ZuGSR GX'
package org.rut.util.algorithm.support; KZ2[.[(Ph
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import org.rut.util.algorithm.SortUtil; d[t0K]
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/** "=a3"/u
* @author treeroot ^8&}Nk[ j
* @since 2006-2-2 UC+Qn
* @version 1.0 65aYH4"
*/ d>f;N+O%
public class ImprovedMergeSort implements SortUtil.Sort { c~U0&V_`j
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private static final int THRESHOLD = 10; 0$|VkMq(
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/* ?d%)R*3IX
* (non-Javadoc) |!(8c>]Bo
* l`\L@~l n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d.f0OhQ
*/ \~#\ [r_
public void sort(int[] data) { "]"0d[d
int[] temp=new int[data.length]; M!6Fnj
mergeSort(data,temp,0,data.length-1); VVQ~;{L
} Fizrsr 6%
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private void mergeSort(int[] data, int[] temp, int l, int r) { k5< n:dS
int i, j, k; -o+t&m
int mid = (l + r) / 2; r $S9/
if (l == r) 2xN7lfu1RB
return; uL)MbM]
if ((mid - l) >= THRESHOLD) 1te^dh:Vp
mergeSort(data, temp, l, mid); 7=fM}sk
else "\*)KH`C
insertSort(data, l, mid - l + 1); a>GA=r
if ((r - mid) > THRESHOLD) )#AYb
mergeSort(data, temp, mid + 1, r); wwl,F=| Y
else u[qy1M0
insertSort(data, mid + 1, r - mid); U,2OofLM
3@=<4$
for (i = l; i <= mid; i++) { }!^h2)'7
temp = data; W
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} +(Y\w^@%H
for (j = 1; j <= r - mid; j++) { \y7?w*K
temp[r - j + 1] = data[j + mid]; \!-]$&,j4
} W_XFTqp^
int a = temp[l]; (m1m}* @
int b = temp[r]; wA{)9.
for (i = l, j = r, k = l; k <= r; k++) { 1tXc7NA<
if (a < b) { d*+}_EV)Y3
data[k] = temp[i++]; "dCIg{j
a = temp; b!g)/%C
} else { Wqv7
data[k] = temp[j--]; t'F$/mx.
b = temp[j]; >IQ&*Bb
} +_:p8,
5o
} |!K&h(J|
} |6NvByc,
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/** ]/!*^;cY(
* @param data L^e*_q2d:>
* @param l 2>"{El|PbN
* @param i HV!P]82Pa
*/ Jha*BaD~N
private void insertSort(int[] data, int start, int len) { U+VJiz<!
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <@`K^g;W
} ~6#mVP5sU)
} s;h`n$
} S*}GW-)oA
} =3,<(F5Y[
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堆排序: t>]W+Lx#
5 n 4/}s
package org.rut.util.algorithm.support; 07^.Z[(pCt
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import org.rut.util.algorithm.SortUtil; l&Q@+xb>
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/** R@WW@ Of
* @author treeroot /,7#%D
* @since 2006-2-2 *Iw19o-I
* @version 1.0 Q\X_JZ
*/ ])pX)(a
public class HeapSort implements SortUtil.Sort{ R&s/s`pLW
Jur$O,u40l
/* (non-Javadoc) 0D:uM$
i]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @uC-dXA"
*/ 3znhpHO)
public void sort(int[] data) { R GV{KL
MaxHeap h=new MaxHeap(); N+SA$wG
h.init(data); P9\y~W
for(int i=0;i h.remove(); qjfv9sU
System.arraycopy(h.queue,1,data,0,data.length); ^ &KH|qRrO
} y3*IF2G
fo}@B&=4
private static class MaxHeap{ N0fE*xo
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void init(int[] data){ ,,XHw;{
this.queue=new int[data.length+1]; w;VUP@Wm
for(int i=0;i queue[++size]=data; m";8 nm
fixUp(size); ~l+~MB
} 0T3r#zQ
} >&<D.lx
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private int size=0; zh !/24p9
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private int[] queue; J!rZskd
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public int get() { P)TeF1~T
return queue[1]; ?fs#K;w
} #tPy0QH
kH=~2rwm
public void remove() { [u3^R]
SortUtil.swap(queue,1,size--); UIQ=b;J9
fixDown(1); tORDtMM9+
} ,v| vgt
file://fixdown jP@t!=
private void fixDown(int k) { n O}x,sG2'
int j; e ]>{?Z
while ((j = k << 1) <= size) { 8/34{2048
if (j < size %26amp;%26amp; queue[j] j++; nDC5/xB
if (queue[k]>queue[j]) file://不用交换 qmnCa&C9
break; RDG,f/L2
SortUtil.swap(queue,j,k); I@a7!ugU65
k = j; XeBSHvO_
} /=OSGIJzm
} b!37:V\#}
private void fixUp(int k) { X>jwjRK
$
while (k > 1) { q33!X!br
int j = k >> 1; 6a`_i
if (queue[j]>queue[k]) kLY9#p=X
break; 4d'tK^X
SortUtil.swap(queue,j,k); m4P=,=%
k = j; j1toV$)P
} 1/qiE{NW
} [laX~(ND{
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} RZE:WE;5
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} $j}sxxTT
e$(i!G)
SortUtil: 7 -V_)FK2c
f4T-=` SO
package org.rut.util.algorithm;
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J=]w$e ?.P
import org.rut.util.algorithm.support.BubbleSort; Zr2QeLQC(
import org.rut.util.algorithm.support.HeapSort; FkECY
import org.rut.util.algorithm.support.ImprovedMergeSort; >|I3h5\M
import org.rut.util.algorithm.support.ImprovedQuickSort; ;/{Q4X{
import org.rut.util.algorithm.support.InsertSort; I0jEhg%JZ
import org.rut.util.algorithm.support.MergeSort; Iei4yDv ;
import org.rut.util.algorithm.support.QuickSort; J&: