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。 (76tYt~I=
插入排序: &`g^b^i
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package org.rut.util.algorithm.support; v# fny
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import org.rut.util.algorithm.SortUtil; T0o0_R
/** r0<zy_d'
* @author treeroot LCSJIt
* @since 2006-2-2 uesIkJ^Q[
* @version 1.0 j3R}]F'C*
*/ =QwT)KRB%
public class InsertSort implements SortUtil.Sort{ dA#'HMh@
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/* (non-Javadoc) }+:X= @Z@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7Zft]C?|@
*/ @6y)wA9Yx
public void sort(int[] data) { x45F-w{
int temp; wF-H{C'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gfepm$*%
} "`KT7
} VTO92Eo
} nwi8>MG
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} ?%T]V+40
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冒泡排序: ,W$&OD
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package org.rut.util.algorithm.support; k5X-*^U=V}
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import org.rut.util.algorithm.SortUtil; ,9buI='
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/** (Kw%fJT
* @author treeroot {P ==6/<2o
* @since 2006-2-2 L7yEgYB
* @version 1.0 i@=(Y~tD`
*/ Xk :_aJ
public class BubbleSort implements SortUtil.Sort{ a!&<jM
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/* (non-Javadoc) ~qE:Nz0@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !#4b#l(e6
*/ +[V.yY/t|>
public void sort(int[] data) { pWeD,!f
int temp; MZ^(BOe_
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZQsVSz( 1
if(data[j] SortUtil.swap(data,j,j-1); IRsyy\[kp8
} cOdgBi
} f5*hOzKG6
} -S%Uw
} .aC/ g?U
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} G#. q%Up
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选择排序: Xz'o<S
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package org.rut.util.algorithm.support; 5[`f(;
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import org.rut.util.algorithm.SortUtil; e'3y^Vg
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/** %\1W0%w
* @author treeroot O~5*X f
* @since 2006-2-2 ,UxAHCR~9
* @version 1.0 *3(mNpi{_
*/ T?*f}J
public class SelectionSort implements SortUtil.Sort { 5~RR
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/* lG`%4}1
* (non-Javadoc) .6pVt_f0/
* V+$fh2t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ._6Q "JAB
*/ nCLEAe$W\=
public void sort(int[] data) { XrGP]k6.^
int temp; 2zkOs:
for (int i = 0; i < data.length; i++) { \|
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int lowIndex = i; D0X!j,Kc
for (int j = data.length - 1; j > i; j--) { +o K*5 Y
if (data[j] < data[lowIndex]) { #?DoP]1Y
lowIndex = j; To,*H OP
} whQJWi=ck
} CS;4 ysNf
SortUtil.swap(data,i,lowIndex); 5M#LO@U
} L1QDA}6?_Y
} Eo0/cln|
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} $nNCBC=
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Shell排序: j;EH[3
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package org.rut.util.algorithm.support; ` c"
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import org.rut.util.algorithm.SortUtil; Upz?x{>x
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/** ~L"?C
* @author treeroot
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* @since 2006-2-2 ZDm Y${J
* @version 1.0 wAc;{60s]
*/ bg^<e}{<H
public class ShellSort implements SortUtil.Sort{ {vp*m:K
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/* (non-Javadoc) pzeCdHF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JD]uDuE
*/ a" L9jrVrw
public void sort(int[] data) { sY&Z/Y
for(int i=data.length/2;i>2;i/=2){ G
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for(int j=0;j insertSort(data,j,i); IJD E{)
} pL2{zW`FDh
} c'wU$xt.w
insertSort(data,0,1); "-Wb[*U;
} f7&9IW`7F^
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/** <sls1,
* @param data x!n8Wx
* @param j )Cd.1X8
* @param i ur[^/lxx0
*/ kG`&Z9P
private void insertSort(int[] data, int start, int inc) { L.: 8qY
int temp; XmN8S_M>v
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;KT5qiqYH
} &W{v(@
} wJh/tb=$o
} #g<6ISuf
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} P[tYu:
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快速排序: 4u#TKr.
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package org.rut.util.algorithm.support; Cl!9/l?z
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import org.rut.util.algorithm.SortUtil; dj{~!}
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/** \t)`Cp6,[b
* @author treeroot i ;^Ya
* @since 2006-2-2 Pk;YM}
* @version 1.0 od^ylg>K
*/ `i<Z<
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public class QuickSort implements SortUtil.Sort{ ?@;#|^k9
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/* (non-Javadoc) J|`.d46
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w8a49 Fv
*/ \J;_%-Z
public void sort(int[] data) { I:("f+
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quickSort(data,0,data.length-1); DKF
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} 5<YL^m{/L
private void quickSort(int[] data,int i,int j){ tTWEhHQ`
int pivotIndex=(i+j)/2; 'UM *7
file://swap d{Owz&PL
SortUtil.swap(data,pivotIndex,j); -F MonM
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int k=partition(data,i-1,j,data[j]); |qBcE
SortUtil.swap(data,k,j); JX{_,2*$
if((k-i)>1) quickSort(data,i,k-1); <>)N$$Rx&
if((j-k)>1) quickSort(data,k+1,j); M~~)tJYsu
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}
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/** bAwKmk9C
* @param data egVKAR-
* @param i 8 [D"
* @param j qw{`?1[+
* @return "F[7b!>R
*/ _<=h#lH
private int partition(int[] data, int l, int r,int pivot) { tS-gaT`T
do{ 73Hm:"Eqd
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /Q_Dd
SortUtil.swap(data,l,r); Hz)i.AA 4
} u08QE,
while(l SortUtil.swap(data,l,r); QWtDZ>
return l; (e0(GOqf4
} KC)}Mzt6_
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} 6@eF|GoP
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改进后的快速排序: {8h[Bd
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package org.rut.util.algorithm.support; I&31jn_o
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import org.rut.util.algorithm.SortUtil; ;#:AM;
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/** hCS}
* @author treeroot 3#Bb4\_v
* @since 2006-2-2 9zY6hh**
* @version 1.0 vrcIwCa
*/ k81%$E
public class ImprovedQuickSort implements SortUtil.Sort { 5DVYHN9c|
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private static int MAX_STACK_SIZE=4096; {Wu[e,p
private static int THRESHOLD=10; ]qxl^Himq
/* (non-Javadoc) Dp!91NgB p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2t
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*/ {Ay dt8
public void sort(int[] data) { "%p7ft
int[] stack=new int[MAX_STACK_SIZE]; T^(> 8/O
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int top=-1; P-3f51 Q
int pivot; }
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int pivotIndex,l,r;
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stack[++top]=0; Wky9wr:g
stack[++top]=data.length-1; -$DfnAh
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while(top>0){ c+
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int j=stack[top--]; Ka_;~LS>(
int i=stack[top--]; Fk^N7EJ:$
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pivotIndex=(i+j)/2; ;S '?l0
pivot=data[pivotIndex]; dvU{U@:sz
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SortUtil.swap(data,pivotIndex,j); I7~) q`
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file://partition k5Fj"U
l=i-1; igW* {)h3
r=j; -%@ah:iJ
do{ 5doi4b>]!
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {ywwJ
SortUtil.swap(data,l,r); uYWD.]X;[
} +`_0tM1
while(l SortUtil.swap(data,l,r); oQObr
SortUtil.swap(data,l,j); O9p s?{g
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if((l-i)>THRESHOLD){ J=k=cFUX
stack[++top]=i; "RN]
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stack[++top]=l-1; 8-Y*b89
} %,~?;JAj
if((j-l)>THRESHOLD){ 28`s+sH
stack[++top]=l+1; YWvD+
stack[++top]=j; ,w3-*z
} qz{9ND|)
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} I<ohh`.
file://new InsertSort().sort(data); %^L{K[}
insertSort(data); rM"27ud[`_
} HE%/+mZN
/** bWAa:
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* @param data -1RMyVx
*/ zh*D2/r
private void insertSort(int[] data) { KE@+I.x
int temp; 5a$EXV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hd\V?#H
} .<F46?HS
} Dzf\m>H[
} >%om[]0E
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} (u} /(Ux
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归并排序: c|;n)as9(%
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package org.rut.util.algorithm.support; 9K/EteS
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import org.rut.util.algorithm.SortUtil; ,1#? 0q
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/** Xt<1b
* @author treeroot lz~^*\ F
* @since 2006-2-2 ekL;SN
* @version 1.0 &hI!mo
*/ +tT"
public class MergeSort implements SortUtil.Sort{ } &B6
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/* (non-Javadoc) Q(nTL WW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]}XDDPbZ}
*/ $Gv@lZ@=
public void sort(int[] data) { ld@+p
int[] temp=new int[data.length]; n@RmH>"
mergeSort(data,temp,0,data.length-1); /*T^7Y&
} suwR`2
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5@m
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int mid=(l+r)/2; <1l%|
if(l==r) return ; SL- 2 ^\R
mergeSort(data,temp,l,mid); iX]OF.:
mergeSort(data,temp,mid+1,r); )>:~XA|?
for(int i=l;i<=r;i++){ s@ @Km1w
temp=data; A-T-4I
} w\o6G7
int i1=l; = IRot
int i2=mid+1; u,So+%
for(int cur=l;cur<=r;cur++){ *VsVCUCz5*
if(i1==mid+1) )|xu5.F
data[cur]=temp[i2++]; 4d5c]%
else if(i2>r) aC\f;&P>
data[cur]=temp[i1++]; ;v@ G
else if(temp[i1] data[cur]=temp[i1++]; OW4j!W
else tr[}F7n9
data[cur]=temp[i2++]; X$we\t
} PJC(:R(j
} 7,+eG">0
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} oxlor,lw/
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改进后的归并排序: cZNcplt8
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package org.rut.util.algorithm.support; |6JKB'
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import org.rut.util.algorithm.SortUtil; _w4G|j$C
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/** DJ, LQj
* @author treeroot i *.Y
* @since 2006-2-2 z_$c_J
* @version 1.0 YQG<Q
*/ OX]$Xdb2:
public class ImprovedMergeSort implements SortUtil.Sort { _M%S
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private static final int THRESHOLD = 10; U.Mfu9}#:
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/* f[k#Znr
* (non-Javadoc) ^[xcfTN
* d^aVP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #y:D{%Wp
*/ +M0pmK!
public void sort(int[] data) { '6dVe2V
int[] temp=new int[data.length]; Snf_{A<
mergeSort(data,temp,0,data.length-1); 1n8[fgz
} e.n(NW
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private void mergeSort(int[] data, int[] temp, int l, int r) { v.-DXQq
int i, j, k; fZo#:"{/K
int mid = (l + r) / 2; )y,^M3$?C
if (l == r) 5)!g.8-!
return; q,,
if ((mid - l) >= THRESHOLD) \0b}Z#'0
mergeSort(data, temp, l, mid); f,cd=vGj
else P }sr
insertSort(data, l, mid - l + 1); *H
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if ((r - mid) > THRESHOLD) u1%URen[x
mergeSort(data, temp, mid + 1, r); ^9[Q;=R
else 13X}pnW
insertSort(data, mid + 1, r - mid); Food<(!.>
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for (i = l; i <= mid; i++) { Jbu2y'zE
temp = data; }mj9$=B4
} '>"{yi-
for (j = 1; j <= r - mid; j++) { /sA&}kX}E
temp[r - j + 1] = data[j + mid]; UY<