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。 ^<`uyY))Q
插入排序: n<3{QqF
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package org.rut.util.algorithm.support; >goG\y
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import org.rut.util.algorithm.SortUtil; ot;
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/** SS7C|*-Zd
* @author treeroot $m[*)0/
* @since 2006-2-2 5-.{RU=
* @version 1.0 VmP5`):?b
*/ gI{56Z
public class InsertSort implements SortUtil.Sort{ Ur,{ZGm
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/* (non-Javadoc) r[4dGt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,nGZ(EBD
*/ K'zBDrkW-x
public void sort(int[] data) { o)sX?IiC
int temp; 3bZ:*6W.6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .&;:X )
} GN=-dLN
} ~4=XYYcka
} ZL+46fj
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} sHm:G_
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冒泡排序: 4R28S]Gb
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package org.rut.util.algorithm.support; [WN2ZQ
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import org.rut.util.algorithm.SortUtil; 2|D<0d#W
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/** #)z7&nD
* @author treeroot l;vA"b=]
* @since 2006-2-2 G&@vTcF
* @version 1.0 P.'$L\
*/ naiy] oY"
public class BubbleSort implements SortUtil.Sort{ aB)G!Rm&
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/* (non-Javadoc) sV-UY!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NzC&ctPk
*/ w(UZmZb}
public void sort(int[] data) { oG'
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int temp; =0mXTY1
for(int i=0;i for(int j=data.length-1;j>i;j--){ A"Sp7M[J
if(data[j] SortUtil.swap(data,j,j-1); R~N'5#.*M
} 4$Ud4<
} 2,e>gP\]
} !DZ4C.
} 91:TE8?Z
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} NY\-p=3c7=
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选择排序: L]3gHq
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package org.rut.util.algorithm.support; x4[
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import org.rut.util.algorithm.SortUtil; &n9srs
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/**
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* @author treeroot VCc57Bo
* @since 2006-2-2 iuHs.k<z
* @version 1.0 V
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*/ d;E
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public class SelectionSort implements SortUtil.Sort { ^=,N]
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/* "= >8UR
* (non-Javadoc) _2rxDd1#.
* ;0;5+ J7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #r;uM+
*/ Rkh
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public void sort(int[] data) { L]QBh\
int temp; -14~f)%NQ*
for (int i = 0; i < data.length; i++) { mmBZ}V+&=
int lowIndex = i; 0JX/@LNg0
for (int j = data.length - 1; j > i; j--) { u!9bhL`
if (data[j] < data[lowIndex]) { 7^n{BsN
lowIndex = j; -A)/CFIZ
} z[*Y%o8-r
} #}aBRKZf6
SortUtil.swap(data,i,lowIndex); ^_XV }&7Q
} QI{<q<
} _[8sL^
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} 4KZ)`KPE
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Shell排序: c%x.cbu>
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package org.rut.util.algorithm.support; (qg~l@rf
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import org.rut.util.algorithm.SortUtil; S<nbNSu6+
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/** X:d[eAu0
* @author treeroot P(Z\y^S
* @since 2006-2-2 <hzuPi@
* @version 1.0 A]AM|2 D
*/ ^5~)m6=2
public class ShellSort implements SortUtil.Sort{ 9Lqo^+0)\
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/* (non-Javadoc) ~PiCA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?PDrj/: *
*/ &ZAc3@l[c
public void sort(int[] data) { "MU)8$d
for(int i=data.length/2;i>2;i/=2){ zR_yxs'
for(int j=0;j insertSort(data,j,i); O`FuXB(t
} AW/)R"+
} "7_qB8\
insertSort(data,0,1); %a$Fsn
} hsHtLH+@
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/** .9KW|(uW
* @param data Nj|~3
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* @param j ]_&pIBp
* @param i tqT-9sEXX.
*/ bZi;jl
private void insertSort(int[] data, int start, int inc) { `)_11ywZ
int temp; iYl$25k/1
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GN
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} qwDoYyyu
} 62{[)jt{
} ?%RR+(2m
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} Q2K)Nl >_
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快速排序: eKek~U&
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package org.rut.util.algorithm.support; a#i%7mfn
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import org.rut.util.algorithm.SortUtil; O!.mc=Gx7
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/** u@$pOLI
* @author treeroot )0xEI
* @since 2006-2-2 aIABx!83>
* @version 1.0 NZ?| #53
*/ TM1J1GU
public class QuickSort implements SortUtil.Sort{ N6*v!M+
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/* (non-Javadoc) ~L=Idt!9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :z}
*/ M}W};~V2ng
public void sort(int[] data) { tx{tIw^2;
quickSort(data,0,data.length-1); DsH`I%w{
} `-[+(+["
private void quickSort(int[] data,int i,int j){ LTt|"D
int pivotIndex=(i+j)/2; 1$adX
file://swap +)7Yqh#$
SortUtil.swap(data,pivotIndex,j); 7{:g|dX
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int k=partition(data,i-1,j,data[j]); w-(^w9_e
SortUtil.swap(data,k,j); V;SXa|,
if((k-i)>1) quickSort(data,i,k-1); x8wal[6
if((j-k)>1) quickSort(data,k+1,j); um$ K^
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} ~\D
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/** g w`}eA$
* @param data -(YdK8
* @param i aok,qn'j
* @param j JdW:%,sv
* @return 60St99@O
*/ 4Iou|
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private int partition(int[] data, int l, int r,int pivot) { "JCvsCe
do{ Al(u|LbQ
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :i_kA'dl&
SortUtil.swap(data,l,r); s(Tgv
} 4yu ^cix(
while(l SortUtil.swap(data,l,r); Q8r 7
return l; |xQq+e}l<
} M`kR2NCi
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} UCP4w@C
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改进后的快速排序:
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package org.rut.util.algorithm.support; #Zy-X_r
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import org.rut.util.algorithm.SortUtil; %7oB[2
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/** uKZe"wN;
* @author treeroot JV#)?/a$z
* @since 2006-2-2 {%;KkC8=R
* @version 1.0 n/3gx4.g
*/ :
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public class ImprovedQuickSort implements SortUtil.Sort { (gl/NH!
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private static int MAX_STACK_SIZE=4096; G;%Pf9o26
private static int THRESHOLD=10; S6sw)
/* (non-Javadoc) LF~=,S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ D~xUr)E
public void sort(int[] data) { YJ`[$0mam
int[] stack=new int[MAX_STACK_SIZE]; bTn7$EG
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int top=-1; .bYDj&]P{
int pivot; <M1XG7_I
int pivotIndex,l,r; PIuk]&L^
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stack[++top]=0; ZL`G<Mo;.
stack[++top]=data.length-1; 2b]'KiX
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while(top>0){ I,r 3.2u
int j=stack[top--]; %&yD^q_
int i=stack[top--]; Yp`6305f
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pivotIndex=(i+j)/2; OKp(A
pivot=data[pivotIndex]; sM?bUg0w
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SortUtil.swap(data,pivotIndex,j); kQ$Q}3f
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file://partition |*N.SS
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r=j; )T:{(v7 d`
do{ Es kh=xA {
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZpHT2-baVe
SortUtil.swap(data,l,r); dy jzF`H
} W&]grG2/
while(l SortUtil.swap(data,l,r); Z3G>DF:$
SortUtil.swap(data,l,j); <4y1[/S
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if((l-i)>THRESHOLD){ 0:**uion
stack[++top]=i; :XMw="u=
stack[++top]=l-1; <v"C`cga
} '?5=j1
if((j-l)>THRESHOLD){ I'o9.B8%#
stack[++top]=l+1; X9nt;A2TU+
stack[++top]=j; <GShm~XD2
} j8@YoD5o
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} _VR Sdr5
file://new InsertSort().sort(data); `OnN12`
insertSort(data); xyx.1o
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} | zj$p~
/** 'jeGERMr'
* @param data I<.3"F1}
*/ , {7wvXP
private void insertSort(int[] data) { F]W'spF,
int temp; YF@'t~_Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !>/U6h,_
} i6r%;ueLb
} JW&/l
} d'Z|+lq:
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} mqk~Pno|<
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归并排序: uj&^W[s
A$W,#`E
package org.rut.util.algorithm.support; !a3cEzs3
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import org.rut.util.algorithm.SortUtil; Tn/
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/** ' R~x.NM
* @author treeroot zb~!>
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* @since 2006-2-2 d> Y9g
* @version 1.0 au574tj
*/ :n>m">4
public class MergeSort implements SortUtil.Sort{ XN]kNJX
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/* (non-Javadoc) K|Std)6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /wI$}X5o~
*/ p0uQ>[NV0
public void sort(int[] data) { 0<Px2/
int[] temp=new int[data.length]; @g""*T1:$
mergeSort(data,temp,0,data.length-1); Ol"p^sqwj
} npz*4\4
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private void mergeSort(int[] data,int[] temp,int l,int r){ 9wC q
int mid=(l+r)/2; @y9_\mX!s
if(l==r) return ; E<'3?(D9hL
mergeSort(data,temp,l,mid); /l0\SVwa>
mergeSort(data,temp,mid+1,r); Ve7[U_"
for(int i=l;i<=r;i++){ >t?;*K\x"
temp=data; " 9 h]P^
} vhZpYW8
int i1=l; d/- f]
int i2=mid+1; <<v,9*h
for(int cur=l;cur<=r;cur++){ vgHMVzxj
if(i1==mid+1) z)q9O_g9
data[cur]=temp[i2++]; r_I7Gd
else if(i2>r) J`uV $l:
data[cur]=temp[i1++]; (2QFwBW]
else if(temp[i1] data[cur]=temp[i1++]; //>f#8Ho
else 'wLQ9o%=p|
data[cur]=temp[i2++]; <;+&`R
}
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} Z|uUE
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} +Ld4e]
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改进后的归并排序: [st4FaQ36
UbJ_'>hK 6
package org.rut.util.algorithm.support; }!(cm;XA"
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import org.rut.util.algorithm.SortUtil; >Rjk d>K3
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/** \NS\>Q+d
* @author treeroot S*IF/ fu
* @since 2006-2-2 ]gHw;ry
* @version 1.0 %-i2MK'A
*/ m/JpYv~
public class ImprovedMergeSort implements SortUtil.Sort { EP'2'51
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private static final int THRESHOLD = 10; %[-D&flKC
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/* =5oE|F%
* (non-Javadoc) ,S2D/Y^>
* H{E223
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d5\w'@Di
*/ 7$a,pNDw
public void sort(int[] data) { 65\'(99yU
int[] temp=new int[data.length]; *rK}Ai
mergeSort(data,temp,0,data.length-1); w8kp6_i'
} VW I{ wC
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private void mergeSort(int[] data, int[] temp, int l, int r) { ,*Tf9=z
int i, j, k; x;99[C!$
int mid = (l + r) / 2; +S5"4<
if (l == r) u8v;O}#
return; 4W*52*'F,
if ((mid - l) >= THRESHOLD) 8{ 8J(~
mergeSort(data, temp, l, mid); ,mhO\P96ik
else OSK3X Qc
insertSort(data, l, mid - l + 1); ib0M$Y1tIS
if ((r - mid) > THRESHOLD) -{>JF
mergeSort(data, temp, mid + 1, r); u=5&e)v3
else <6)Ogv",
insertSort(data, mid + 1, r - mid); OySIp[{tJ
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for (i = l; i <= mid; i++) { 5yI_uQR
temp = data; 4)!aYvaER
} :,Q\!s!
for (j = 1; j <= r - mid; j++) { ly7\H3
temp[r - j + 1] = data[j + mid]; "H" 4(3
} ;x$,x-
int a = temp[l]; Jv %,v?
int b = temp[r]; \ty{KAc&
for (i = l, j = r, k = l; k <= r; k++) { b<P9@h~:
if (a < b) { Q.>@w<[!L
data[k] = temp[i++]; <[@AMd S
a = temp; )/1AF^ E
} else { >u
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data[k] = temp[j--]; xqs{d&W
b = temp[j];
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} B+#!%J_
} WolkW:(Cg
} :Gsh
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/** `|Pfa
* @param data 5f(yF
* @param l n#Q ;bSw
* @param i O; 7`*}m
*/ ?{NP3
private void insertSort(int[] data, int start, int len) { "-88bF~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); I} m\(TS-"
} D>|m8-@]
} =&;orP
} ]B/Gz
}
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堆排序: NGcd
SU~t7Ta!G
package org.rut.util.algorithm.support; P$ZIKkf
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import org.rut.util.algorithm.SortUtil; wmAZ {
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/** VNBf2Va
* @author treeroot h+<vWo}H
* @since 2006-2-2 m-Q!V+XQp
* @version 1.0 i t.Lh'N;T
*/ UmUw>+A
public class HeapSort implements SortUtil.Sort{ SR)G!9z_/
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/* (non-Javadoc) 8yij=T*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o@*eC L=
*/ @/FE!6 |O
public void sort(int[] data) { y.(Yh1
MaxHeap h=new MaxHeap(); 4r&D