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。 }*bp4<|
插入排序: Mlc_w19C9
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package org.rut.util.algorithm.support; O\f`+Q`0
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import org.rut.util.algorithm.SortUtil; Yr{hJGw[
/** }< '6FxR
* @author treeroot *@bz<{!
* @since 2006-2-2 H<!q@E
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* @version 1.0 gOnZ#
*/ DX! dU'tj
public class InsertSort implements SortUtil.Sort{ Ra5 3M!>]
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/* (non-Javadoc) 0V-jOc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) odca?
*/ jR}EBaI}
public void sort(int[] data) { /1Gmga5
int temp; #W8F_/!n|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oH17!$Fly
} JYj*.Q0
} e1XKlgl
} FR6 W-L
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冒泡排序: ym5@SBqIx
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package org.rut.util.algorithm.support; 5 ph CEKt;
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import org.rut.util.algorithm.SortUtil; (z8ZCyq7r[
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/** ! (lF#MG}
* @author treeroot 41=H&G&
* @since 2006-2-2 %r.OV_04
* @version 1.0 'qEw]l
*/ Z":m(}u O
public class BubbleSort implements SortUtil.Sort{ Vaf,
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/* (non-Javadoc) -zYa@PW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3.Mpd
*/ cvy
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public void sort(int[] data) { LhKbZoPp
int temp; hzk!H]>E
for(int i=0;i for(int j=data.length-1;j>i;j--){ 00D.Jn
if(data[j] SortUtil.swap(data,j,j-1); ;bG?R0a
} jMBMqQNU
} j5R0e}/r
} p,k1*|j
} wz3X;1l`c
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} G~C-tAB
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选择排序: evZP*N~G
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package org.rut.util.algorithm.support; B &B4 P
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import org.rut.util.algorithm.SortUtil; Tv'1IE
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/** 6X9$T11Vc
* @author treeroot |APOTQV
* @since 2006-2-2 Y?1T
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* @version 1.0 ZzBaYoNy[0
*/
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public class SelectionSort implements SortUtil.Sort { b=BNbmX
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/* $- ]G6r
* (non-Javadoc) .9Oj+:n
* !21G$[H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UVLS?1ra
*/ CLZj=J2
public void sort(int[] data) { ,F->*=
int temp; G6{PrV#
for (int i = 0; i < data.length; i++) { ?glx8@
int lowIndex = i; z-K};l9y
for (int j = data.length - 1; j > i; j--) { `L$Av9X\
if (data[j] < data[lowIndex]) { QZ(O2!Mg
lowIndex = j; ?uc]Wgw"s
} NG3:=
} [u*7( 4e
SortUtil.swap(data,i,lowIndex); :j3^p8]
} J
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} > .}G[C
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} B>'J5bZsw
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Shell排序: e`][zx
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package org.rut.util.algorithm.support; ([a;id
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import org.rut.util.algorithm.SortUtil; q("l?'
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/** f%_$RdU
* @author treeroot Z%ZOAu&p
* @since 2006-2-2 c]VK%zl
* @version 1.0 Na]Z%#~
*/ ! 1?u0
public class ShellSort implements SortUtil.Sort{ @G#`uoD
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/* (non-Javadoc) R~A))4<%%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?$;&DoE
*/ 8hy1yt6t4~
public void sort(int[] data) { HQ=pf >
for(int i=data.length/2;i>2;i/=2){ COWlsca
for(int j=0;j insertSort(data,j,i); xzz@Wc^_
} )40YA\V
} IeChz d
insertSort(data,0,1); ,1|=_M31
} ;7E"@b,tPN
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/** t:lDFv4s
* @param data QHje}
* @param j $B>L_~cS
* @param i Qu<HeSA_
*/ 8Rw:SU9H?T
private void insertSort(int[] data, int start, int inc) { zN9@.!?X2
int temp; \QSD*
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~ cu+QR)
} ( Ygy%O%
} *3RD\.jPX
} liB~vdqj
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} .'+JA:3R
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快速排序: ZA_~o#0%
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package org.rut.util.algorithm.support; >>R)?24,<
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import org.rut.util.algorithm.SortUtil; +LWgby4q
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/** GQ.akA_(
* @author treeroot &SZAe/3+
* @since 2006-2-2 "lA$;\&
* @version 1.0 \(f82kv
*/ ]Zay9jD}c-
public class QuickSort implements SortUtil.Sort{ {az
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/* (non-Javadoc) wN0?~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DT;;4-{
*/ Z'^.H3YvL
public void sort(int[] data) { ;SA+|,
quickSort(data,0,data.length-1); @ohJ'
} '@hnqcqXq
private void quickSort(int[] data,int i,int j){ XxB%
int pivotIndex=(i+j)/2; b1e)w?n
file://swap :SF8t` 4`
SortUtil.swap(data,pivotIndex,j); R*dXbI&,e
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int k=partition(data,i-1,j,data[j]); ^CDh! )
SortUtil.swap(data,k,j); Bt\V1 )
if((k-i)>1) quickSort(data,i,k-1); .$G^c
if((j-k)>1) quickSort(data,k+1,j); j\.pS^+
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} xr)m8H
/** 'HvW&~i(
* @param data HwMe^e;
* @param i |])Ko08*tE
* @param j 7V\M)r{q7
* @return mp]UUpt
*/ #eI`l`}
private int partition(int[] data, int l, int r,int pivot) { Q6X}R,KA1
do{ -Xgup,}?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6l>016 x
SortUtil.swap(data,l,r); [z}$G:s
} -cXVkH{
while(l SortUtil.swap(data,l,r); ,n5 [Y)
return l; Zr\G=0`
} 1-4*YrA
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} +w3k_^X9c
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改进后的快速排序: b{e|~v6&
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package org.rut.util.algorithm.support; 5i3nz=~o
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import org.rut.util.algorithm.SortUtil; )i.\q
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/** ~65lDFY/
* @author treeroot ]7dal [i
* @since 2006-2-2 `jFvG\aC
* @version 1.0 a<D]Gz^h
*/ K)8 m?sf/
public class ImprovedQuickSort implements SortUtil.Sort { v[y|E;B
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private static int MAX_STACK_SIZE=4096; !jJH}o/KW
private static int THRESHOLD=10; fAR0GOI
/* (non-Javadoc) Y2p~chx9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5th\_n}N2/
*/ F>3fP
public void sort(int[] data) { 2ld0w=?+eu
int[] stack=new int[MAX_STACK_SIZE]; .3,Ow(3l
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int top=-1; 5adB5)`
int pivot; %1]Lc=[j
int pivotIndex,l,r; PmE2T\{s!
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stack[++top]=0; &_c5C
stack[++top]=data.length-1; {7q +3f <
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while(top>0){ {5:V
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int j=stack[top--]; 3WdANR
int i=stack[top--]; B7qiCX}pD
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pivotIndex=(i+j)/2; </d&bS
pivot=data[pivotIndex]; Rh#TR"
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SortUtil.swap(data,pivotIndex,j); aib)ItNb
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file://partition B,dKpz;kFg
l=i-1; ODqWXw#
r=j; u%Yr&u
do{ qg@Wzs7c~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )%5T*}j
SortUtil.swap(data,l,r); s*pgR=dZZ
} "Q@ZS2;A
while(l SortUtil.swap(data,l,r); IC7S
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SortUtil.swap(data,l,j); 4mzWNr>fb
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if((l-i)>THRESHOLD){ cS1BB#N0
stack[++top]=i; |2~fOyA+
stack[++top]=l-1; [I` 6F6
} PizPsJ|&
if((j-l)>THRESHOLD){ !=c&U.B
stack[++top]=l+1; {utIaMb]&v
stack[++top]=j; BK:S:
} _-I 0f##.
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} \TBY)_[ {
file://new InsertSort().sort(data); "&/&v
insertSort(data); DV/P/1E
} Z-+p+34ytq
/** (yel
* @param data Ea*Jl<
*/ V qW(S1w
private void insertSort(int[] data) { f)+fdc
int temp; ojH-;|f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~FV
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} .sDVBT'%
}
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} ~?{"H<
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} ;2;Kq)j_=
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归并排序: :bgi*pR{
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package org.rut.util.algorithm.support; yVM
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import org.rut.util.algorithm.SortUtil; ewtoAru
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/** `jb?6;15
* @author treeroot r`L$[C5I
* @since 2006-2-2 <vV?VV([
* @version 1.0 Ot]PH[+
*/ a{6rQ
public class MergeSort implements SortUtil.Sort{ c.PPVqx
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/* (non-Javadoc) F+S;u=CKx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i- E~ZfJ
*/ 9c1n
public void sort(int[] data) { DP NUm<>
int[] temp=new int[data.length]; bewi.$E{
mergeSort(data,temp,0,data.length-1); 1qb 3.
} d\V\,%&.
PU^Z7T);
private void mergeSort(int[] data,int[] temp,int l,int r){ ;o#R(m@Lx
int mid=(l+r)/2; eRa1eRgP
if(l==r) return ; zRJopcE<
mergeSort(data,temp,l,mid); iCIu]6
mergeSort(data,temp,mid+1,r); zrt8ze=Su
for(int i=l;i<=r;i++){ O(otI-Lc
temp=data; #IP<4"Hf
} W<3nF5!
int i1=l; -<i&`*zG
int i2=mid+1; @W^A%6"j
for(int cur=l;cur<=r;cur++){ 6;GL>))'
if(i1==mid+1) Oav^BhUO
data[cur]=temp[i2++]; %97IXrE
else if(i2>r) TUiXE~8=
data[cur]=temp[i1++]; :(Feg 2c
else if(temp[i1] data[cur]=temp[i1++]; -C5Qh&~W
else SD6xi\8
data[cur]=temp[i2++]; CV4r31w
} vpUS(ztvs
} y?M99Vo4?
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} @`?"#^jT
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改进后的归并排序: 81/Bn!
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package org.rut.util.algorithm.support; F#Oqa^$(
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import org.rut.util.algorithm.SortUtil; (CH F=g
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/** b'^-$
* @author treeroot UPPDs "
* @since 2006-2-2 M,PZ|=V6a
* @version 1.0 BjJ$I^
*/ Fp06a!7<
public class ImprovedMergeSort implements SortUtil.Sort { >b |l6#%
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private static final int THRESHOLD = 10; lBL;aTzo
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/* e4ajT
* (non-Javadoc) @B~/0
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* LC\Ys\/,U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |9!3{3
*/ Vr f` :%
public void sort(int[] data) { d;(L@9HHD
int[] temp=new int[data.length]; Ni{(=&*=
mergeSort(data,temp,0,data.length-1); /H,!7!6>?
} j+J)S1
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private void mergeSort(int[] data, int[] temp, int l, int r) { `96:Z-!}
int i, j, k; t4UKG&[a
int mid = (l + r) / 2; iR(A^
if (l == r) '\dFhYs{*
return; NJ7N*
if ((mid - l) >= THRESHOLD) ^gh/$my;
mergeSort(data, temp, l, mid); 2[Q*?N
else wI}5[m
insertSort(data, l, mid - l + 1); E'&UWDh
if ((r - mid) > THRESHOLD) 'e\m6~u\hm
mergeSort(data, temp, mid + 1, r); ZQnJTS+ Rd
else o
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insertSort(data, mid + 1, r - mid); sN7I~
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for (i = l; i <= mid; i++) { L;5jhVy
temp = data; co<){5zOT
} 7vcYI#(2
Y
for (j = 1; j <= r - mid; j++) { JHc|.2Oe
temp[r - j + 1] = data[j + mid]; /%rbXrR4w
} dt)
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int a = temp[l]; -(qoz8H5
int b = temp[r]; b2H!{a"
for (i = l, j = r, k = l; k <= r; k++) { jfS?#;T)
if (a < b) { i,FG?\x@
data[k] = temp[i++]; _ts0@Z_:
a = temp; lyIstfRh15
} else { _$wWKJy9
data[k] = temp[j--]; i?'HVx
b = temp[j]; }!& w<wR
} /^#k/z
} E[t\LTt*n
} i,S%:0c7)
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/** &.+[~2
* @param data M`KrB5a+6
* @param l ()(@Qcc
* @param i zY\v|l<T
*/ Q]w;o&eo
private void insertSort(int[] data, int start, int len) { fmA&1u/xMs
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,^,Vq]$3
} ^;NM'Z
} 1B6Go
} +fAAkO*GP
} .
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堆排序: A86#7
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package org.rut.util.algorithm.support; u$&