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。 |#>:@{X<
插入排序: KF%tF4^+|
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package org.rut.util.algorithm.support; LA837P
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import org.rut.util.algorithm.SortUtil; DL t "cAW
/** FQ3{~05T
* @author treeroot |[ )e5Xhd
* @since 2006-2-2 (uxe<'Co|
* @version 1.0 "CX@a"
*/ uZg[PS=@!X
public class InsertSort implements SortUtil.Sort{ L&I8lG
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/* (non-Javadoc) #80[q3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -lb,0
*/ 5}+&Em":
public void sort(int[] data) { yMd<<:Ap
int temp; o#^(mGj_.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Bh#?:h&f
} *\n-yx]
} h:4Uv}Z
} &2P+9j>
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} xk#q_!(j
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冒泡排序: ~fht [S?@M
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package org.rut.util.algorithm.support; PX} ~
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import org.rut.util.algorithm.SortUtil; z>6hK:27
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/** #hQ#_7
* @author treeroot NKSK+ll2
* @since 2006-2-2 ;UAi>//#
* @version 1.0 Qvx[F:#Tk
*/ cm'`u&S
public class BubbleSort implements SortUtil.Sort{ DO^J=e
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/* (non-Javadoc) ROWI.|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TdCC,/c3
*/ B1U<m=Y
public void sort(int[] data) { QMz6syn4u
int temp; vg"$&YX9"
for(int i=0;i for(int j=data.length-1;j>i;j--){ Zw`9B
if(data[j] SortUtil.swap(data,j,j-1); :kU-ol$
} #H5i$ o
} BKV,V/*p
} (*K=&e0O
} it#,5#Y:
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} n9w(Z=D\
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选择排序: V#P`FX
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package org.rut.util.algorithm.support; 'Zket=Sm;
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import org.rut.util.algorithm.SortUtil; Qf
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/** <NYf !bx
* @author treeroot 0DB8[#i%:
* @since 2006-2-2 (>R
* @version 1.0 [Nw%fuB
*/ wyi%!H
public class SelectionSort implements SortUtil.Sort { E5+-N
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/* |b+ZKRW
* (non-Javadoc) !!\x]$v
* 8{f~tPY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _-R&A@
*/ y[64O x
public void sort(int[] data) { b;5&V_
int temp; 6]^~yby P
for (int i = 0; i < data.length; i++) { QB"Tlw(
int lowIndex = i; n90DS/Yx
for (int j = data.length - 1; j > i; j--) {
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if (data[j] < data[lowIndex]) { K-2oSS56
lowIndex = j; DfsPg':z
} IyPk3N
} NRI@M5
SortUtil.swap(data,i,lowIndex); QEQ/
} )L0NX^jW;
} JP1XH k
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} Q|7$SS6$
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Shell排序: 8JFvz(SK>
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package org.rut.util.algorithm.support; Pea2ENe3
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import org.rut.util.algorithm.SortUtil; Klj -dz
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/** 2CY4nSKW
* @author treeroot &~K4I
* @since 2006-2-2 M?ObK#l!_
* @version 1.0 8:sQB%BB
*/ ]/6i#fTw
public class ShellSort implements SortUtil.Sort{ X? l5}
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/* (non-Javadoc) 3Ow bU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t8ZzBD!dP
*/ f6])M)
public void sort(int[] data) { 8svN*`[
for(int i=data.length/2;i>2;i/=2){ oB$c-!&
for(int j=0;j insertSort(data,j,i); L:_GpZ_
} )jPIBzMys
} : =f!>_r+
insertSort(data,0,1); i1 >oRT{Z
} m|]:oT`M
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/** V~
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* @param data [aF"5G
* @param j WS6;ad;|
* @param i V)Sw\tS6g
*/ gA:unsI
private void insertSort(int[] data, int start, int inc) { )&s9QBo{b
int temp; Mc9J Fzp
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1'YUK"i
} =1+/`w
} QX+Xi<YE-
} W QqOXF
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} ^e{]WH?
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快速排序: CxD=8X9m
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package org.rut.util.algorithm.support; ZKTY1JW_
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import org.rut.util.algorithm.SortUtil; }Y!v"DO#Q*
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/** | r,{# EE
* @author treeroot D%*Ryg
* @since 2006-2-2 PS3jCT
* @version 1.0 2 -pv
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*/ 2(2UAB"u
public class QuickSort implements SortUtil.Sort{ VVw5)O1'
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/* (non-Javadoc) :!/ (N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /d*[za'0
*/ p5aqlYb6r
public void sort(int[] data) { $U4[a:
quickSort(data,0,data.length-1); Vtv~jJ{m
} ]YrgkC35
private void quickSort(int[] data,int i,int j){ D!V~g72j
int pivotIndex=(i+j)/2; `4-N@h
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SortUtil.swap(data,pivotIndex,j); U'LPaf$O
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int k=partition(data,i-1,j,data[j]); i<{:J -U|
SortUtil.swap(data,k,j); fb[? sc
if((k-i)>1) quickSort(data,i,k-1); b#(X+I
if((j-k)>1) quickSort(data,k+1,j); %uz6iQaq]X
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} rV
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/** O$7cN\Z
* @param data >zfFvx_q
* @param i *Ksk1T+>
* @param j '<U4D
* @return AAF']z<4_"
*/ B:VGa<lx5
private int partition(int[] data, int l, int r,int pivot) { =wMq!mBd
do{ &S39SV
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); I23"DBR3
SortUtil.swap(data,l,r); ~(`&hYE
} uN=f(-"
while(l SortUtil.swap(data,l,r); VA@
return l; .cz7jD
} wUfm)Q#
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} x^Zm:Jrw~
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改进后的快速排序: }.D adV
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package org.rut.util.algorithm.support; AquO#A[,#
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import org.rut.util.algorithm.SortUtil; =\M6s
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/** p_i',5H(
* @author treeroot =&^tfD
* @since 2006-2-2 7AF6aog
* @version 1.0 +k V$ @qH
*/ )"J1ET,z
public class ImprovedQuickSort implements SortUtil.Sort { uFuP%f!yY
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private static int MAX_STACK_SIZE=4096; 9&zQ5L>
private static int THRESHOLD=10; sJMpF8
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VAp 1{
*/ j_.tg7X
public void sort(int[] data) {
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int[] stack=new int[MAX_STACK_SIZE]; CIVV"p`}
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int top=-1; g"N&*V2
int pivot; P?@o?
int pivotIndex,l,r; p)?6~\F:
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stack[++top]=0; c`/kx
stack[++top]=data.length-1; !AGoI7W}
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while(top>0){ :o:Z
int j=stack[top--]; p*l=rni4
int i=stack[top--]; S{Zf}8?6$
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pivotIndex=(i+j)/2; }}l jVUpC%
pivot=data[pivotIndex]; s^k<r;'\
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SortUtil.swap(data,pivotIndex,j); [<sN "
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do{ vGOO"r(xL
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X<H{
SortUtil.swap(data,l,r); nUK;M[
} ?@<Tzk]a.
while(l SortUtil.swap(data,l,r); *J{E1])<a
SortUtil.swap(data,l,j); >vXS6`;
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if((l-i)>THRESHOLD){ 6Ilj7m*
stack[++top]=i; q{+}0!o
stack[++top]=l-1; L\R(//V
} O)"Z% B
if((j-l)>THRESHOLD){ lYey7tl{
stack[++top]=l+1; DPCQqV |7
stack[++top]=j; 4 %4Yqx )
} 4y!GFhMh
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} |pBvy1e4)
file://new InsertSort().sort(data); t^2$ent
insertSort(data); >Bu_NoM
} wxN&k$`a
/** S4rm K&
* @param data NN5G
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*/ 0Hx'C^m72
private void insertSort(int[] data) { 5RP5%U
int temp; E,fbIyX
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u>:j$@56
} +O)ZB$w4
} a5&[O
} A-*MH#QUKh
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} e7tio!
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归并排序: 5=Y(.}6
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package org.rut.util.algorithm.support; .KtK<Ps[S
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import org.rut.util.algorithm.SortUtil; ~qXwQ@
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/** 2`> (LH
* @author treeroot c:+UC
* @since 2006-2-2 H%Z;Yt8^gt
* @version 1.0 HBs
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*/ qIB2eCXw
public class MergeSort implements SortUtil.Sort{ ,1]VY/
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/* (non-Javadoc) /O`R9+;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Fzw_qr
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*/ ,@I\'os
public void sort(int[] data) { GIfs]zVr`
int[] temp=new int[data.length]; KFy|,@NI
mergeSort(data,temp,0,data.length-1); PZ#aq~>w
} >U?#'e{qW
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private void mergeSort(int[] data,int[] temp,int l,int r){ 4G hg~0
int mid=(l+r)/2; L">m2/ HG
if(l==r) return ; er2;1TW3E
mergeSort(data,temp,l,mid); EfkBo5@ Qi
mergeSort(data,temp,mid+1,r); M:L-j{?y_
for(int i=l;i<=r;i++){ K)}Vr8,V
temp=data; # %'%LY=
} RRzLQ7J
int i1=l; ~#)9Kl7<X
int i2=mid+1; bJkFCI/
for(int cur=l;cur<=r;cur++){ rrq7UJ;
if(i1==mid+1) k(v &+v
data[cur]=temp[i2++]; Do5{t'm3
else if(i2>r) i[w&