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。 ^66OzT8A
插入排序: NQqNBI?cr
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package org.rut.util.algorithm.support; M }q;\}
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import org.rut.util.algorithm.SortUtil; C
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/** c;zk{dP
* @author treeroot |nGv:= H@
* @since 2006-2-2 O,S>6o)?
* @version 1.0 -)R
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*/ $xcZ{C
public class InsertSort implements SortUtil.Sort{ {L [
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/* (non-Javadoc) 'yV*eG?^&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]q4(%Q
*/ VE}r'MBk
public void sort(int[] data) { r3KNRr@
int temp; ai;Q,Vy
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #&1gVkvp
} iSg0X8J)
} Q{an[9To~P
} T8x8TN"
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} tmoaa!yRnT
};<?W){!H
冒泡排序: gQJLqs"F
bbDm6,
package org.rut.util.algorithm.support; uX]]wj-R3
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import org.rut.util.algorithm.SortUtil; eZ-fy,E
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/** w~Nat7nD
* @author treeroot 7S=,#
* @since 2006-2-2 TQ0ZBhd
* @version 1.0 Sw5:T
*/ S.q0L
public class BubbleSort implements SortUtil.Sort{ bOp%
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/* (non-Javadoc) pS}IU{#;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~tZB1+%)
*/ dnQ6Ras
public void sort(int[] data) { lNl.lI\t)y
int temp; %r*,m3d
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0Ub'=`]5a
if(data[j] SortUtil.swap(data,j,j-1); RDjw|V
} EuImj#Zl
} He}?\C
Bo
} J@}PySq
} ^ meU&
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} Lo5pn
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选择排序: d2^/
%[M0TE=J
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; 3IB9-wG
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/** u0G
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* @author treeroot `%"x'B`mM
* @since 2006-2-2 x'..j5
* @version 1.0 x%HxM~&
*/ ]<L~f~vU
public class SelectionSort implements SortUtil.Sort { g j]8/~lr
B& R?{y*
/* 67Qu<9}<-
* (non-Javadoc) 78~/1-
* m^3j|'mG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 11kyrv
*/ jb{9W7;RL
public void sort(int[] data) { *'aouS/?<6
int temp; dU2;
for (int i = 0; i < data.length; i++) { P1B=fgT
int lowIndex = i; >VQLC&u(
for (int j = data.length - 1; j > i; j--) { <r`;$K
if (data[j] < data[lowIndex]) { X(rXRP#
lowIndex = j; r>TOJVT&]
} <>Dw8?O
} CQ^(/B^c
SortUtil.swap(data,i,lowIndex); <t*<SdAq>`
} 5MD'AP:
} (E&M[hH+
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} s S#/JLDx]
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Shell排序: /!A"[Tyt
4[MTEBx
package org.rut.util.algorithm.support; kv, !"<
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import org.rut.util.algorithm.SortUtil; "5O>egt
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/** :FtV~^Z
* @author treeroot F]r'j
ZL
* @since 2006-2-2 #7}M\\$M
* @version 1.0 y'I
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*/ (_CvN=A
public class ShellSort implements SortUtil.Sort{ ^FBu|eAkE
CSq|R-@<U
/* (non-Javadoc) ksuePMIK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W[
W)q%[)
*/ ,|>>z#Rr(n
public void sort(int[] data) { JtxVF!v
for(int i=data.length/2;i>2;i/=2){ EzjK{v">
for(int j=0;j insertSort(data,j,i); '@h
} 1_v\G
} _z{9V7n4
insertSort(data,0,1); q(^iT~}
} _KxR~k^
I"x|U[*B
/** (_>SuQK
* @param data >/Q^.hzd
* @param j rKI<!
* @param i 6sQ;Z |!Pz
*/ gO"G/
private void insertSort(int[] data, int start, int inc) { z=g!mVK5
int temp; #\n*Qg4p
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $x]/|u/9
} lNyyLLt
} CI-za !T
} [u2t1^#Ol
{=mGXd`x?l
} {6:*c
#OM)71kB8
快速排序: X;GU#8W
4;CI<&S
package org.rut.util.algorithm.support; SJMbYjn0J
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import org.rut.util.algorithm.SortUtil; q/ 54=8*h0
nXoDI1<[
/** 5;p|iT
* @author treeroot nqUnDnP2c
* @since 2006-2-2 -.8K"j{N
* @version 1.0 |pWu|M _'
*/ Yk|.UuXT
public class QuickSort implements SortUtil.Sort{ m*N8!1Ot
~n%Lo3RiP
/* (non-Javadoc) ) 5$?e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~+Pe=~a[
*/ {"{]S12N
public void sort(int[] data) { \R]2YY`EP
quickSort(data,0,data.length-1); L3xN#W;m7
} :DNI\TmhJ
private void quickSort(int[] data,int i,int j){ 2y;vX|lX]
int pivotIndex=(i+j)/2; ~&qv[XS
file://swap /_{ZWLi(
SortUtil.swap(data,pivotIndex,j); \gPMYMd
2gZp
O9
int k=partition(data,i-1,j,data[j]); ,zHL8SiTX
SortUtil.swap(data,k,j); tcv(<0
if((k-i)>1) quickSort(data,i,k-1); V,d\Wk k/
if((j-k)>1) quickSort(data,k+1,j); O_4B>
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#Pf<2S
} <4vCx
/** jK*d
* @param data ~S;-sxoO0l
* @param i Q>Z~={"
* @param j gH'hA'
* @return jI*@&3
*/
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private int partition(int[] data, int l, int r,int pivot) { 2sk7E'2(
do{ ``:[Jr&
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); uyB 2
SortUtil.swap(data,l,r); TaHcvjhR
} LDHu10l
while(l SortUtil.swap(data,l,r); v G\J8s
return l; 5=|h~/.k
} 7I"~a<f0X`
A-=hvJ5T
} Xnjl {`
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改进后的快速排序: iO?^y(phC
C12V_)~2
package org.rut.util.algorithm.support; |/n7(!7$[v
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import org.rut.util.algorithm.SortUtil; \X%FM"r
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/** i.)n#@M2
* @author treeroot t^YtP3`?b
* @since 2006-2-2 h`N2M,
* @version 1.0 #\Rxqh7
*/ md'wre3
public class ImprovedQuickSort implements SortUtil.Sort { a@W9\b@I
\ Voly
private static int MAX_STACK_SIZE=4096; wyB]!4yy,
private static int THRESHOLD=10; eQ#i.%
/* (non-Javadoc) >L4F'#I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8&"Jlz
|
*/ Er
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public void sort(int[] data) { _&V,yp!|
int[] stack=new int[MAX_STACK_SIZE]; FVrB#Hw~
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int top=-1; GEf=A.WAfw
int pivot; PN]hG,q*4O
int pivotIndex,l,r; X coPkW
2!B|w8ar
stack[++top]=0; _1G/qHf^S
stack[++top]=data.length-1; &k}B66
>(igVaZ>
while(top>0){ q 9xA.*
int j=stack[top--]; ^#Q-?O
int i=stack[top--]; )/)u.$pi
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pivotIndex=(i+j)/2; [ R+M .5
pivot=data[pivotIndex]; {zm8`
9]IZ3
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SortUtil.swap(data,pivotIndex,j); z!bT^_Cc0
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file://partition |w*s:p
l=i-1; 7A(4`D J
r=j; 0Pf88 '6
do{ p$1 'e,G
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); X0P +[.i
SortUtil.swap(data,l,r); Bx|W#:3e
} ,Owk;MV@
while(l SortUtil.swap(data,l,r); O H2IO
SortUtil.swap(data,l,j); BX[IWP\%
1%B9xLq
if((l-i)>THRESHOLD){ ^" ?a)KC
stack[++top]=i;
{q8|/{;
stack[++top]=l-1; :+jg311}
} `&q+ f+z
if((j-l)>THRESHOLD){ N^[
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stack[++top]=l+1; >VIFQ\
stack[++top]=j; 2ak]&ll+h
} zu
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} W1"NKg~4
file://new InsertSort().sort(data); ff.k1%wr^
insertSort(data); HLV8_~gQPf
} =Vs?=|r
/** PA,aYg0f
* @param data m-Jy
4f#
*/ \^dse
private void insertSort(int[] data) { }WC[<AqI
int temp; qF bj~ec
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :3Q:pKg
} `
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} IW<rmP=R&
} &M?b08
EEZ~Bs}d
} lF/
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"]]LQb$
归并排序: -9{N7H
/fT"WaTEK
package org.rut.util.algorithm.support; M]{~T7n-
p! :oT1U
import org.rut.util.algorithm.SortUtil; :~8@fEKb{
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/** ?o+%ckH
* @author treeroot PsNrCe%e
* @since 2006-2-2 Ff/Ap&0+
* @version 1.0 mTX:?>
*/ GV1Ol^
public class MergeSort implements SortUtil.Sort{ =
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\ [[xyd
/* (non-Javadoc) 0g:q%P0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jnJ*e-AW
*/ oA-,>:}g{
public void sort(int[] data) { R~a9}&
int[] temp=new int[data.length]; o#wly%i')
mergeSort(data,temp,0,data.length-1); (y!bvp[" m
} *> nOL
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private void mergeSort(int[] data,int[] temp,int l,int r){ p#P<V%
int mid=(l+r)/2; --l
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if(l==r) return ; i,;eW&
mergeSort(data,temp,l,mid); y]@JkF(
mergeSort(data,temp,mid+1,r); I(R%j]LX&
for(int i=l;i<=r;i++){ \)uA:v
temp=data; 2=K|kp5
} sHBTB6)lx
int i1=l; hE=xS:6
int i2=mid+1; 3^wHL:u
for(int cur=l;cur<=r;cur++){ =Y|( }92
if(i1==mid+1) C=&n1/
data[cur]=temp[i2++]; $<)]~**K
else if(i2>r)
hq{{XQ
data[cur]=temp[i1++]; zL+t&P[\
else if(temp[i1] data[cur]=temp[i1++]; Ip7#${f5M
else "!vY{9,
data[cur]=temp[i2++]; .E^w, o
} 80Hi v
} g!_#$az3
%JSRC<,a
} O(%6/r`L,k
3\P*"65
改进后的归并排序: Gf#l ^yr
diu"Nt
package org.rut.util.algorithm.support; pEcYfj3M
2C:u)}R7D
import org.rut.util.algorithm.SortUtil; Zx{ Sxv"
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/** ]3,9."^
* @author treeroot {~9HJDcM
* @since 2006-2-2 (OE S~G
* @version 1.0 [8Y7Q5Had
*/ |Y}YhUI&
public class ImprovedMergeSort implements SortUtil.Sort { r@r*|50
<FBH;}]
private static final int THRESHOLD = 10; Fl($0}ER
o[KZm17
/* QpQ 2hNf
* (non-Javadoc) ~xY"P)(x;
* zOSUYn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &'k(v(>n,
*/ B6&[_cht
public void sort(int[] data) { ~x9J&*zxM
int[] temp=new int[data.length]; [N~7PNd S
mergeSort(data,temp,0,data.length-1); #'KM$l,P
} `qmwAT
h9m|f|cH
private void mergeSort(int[] data, int[] temp, int l, int r) { iB
W:t
int i, j, k; %>+lr%B
int mid = (l + r) / 2; c.LRS$o/j
if (l == r) /dg?6XT/
return; | WJ]7C
if ((mid - l) >= THRESHOLD) \PT!mbB?
mergeSort(data, temp, l, mid); g)Hsd0
else .?3roQ
insertSort(data, l, mid - l + 1); x*F-d2D
if ((r - mid) > THRESHOLD) M x,5
mergeSort(data, temp, mid + 1, r); 7Dssr [
else Eu&$Rq}
insertSort(data, mid + 1, r - mid); ) q'D9x9
'+$r7?dKP
for (i = l; i <= mid; i++) { p2l@6\m\
temp = data; Ih5Y7<8b~
} %Bm{ctf#)
for (j = 1; j <= r - mid; j++) { k]:`<`/I_
temp[r - j + 1] = data[j + mid]; ".|8 (Y
} a"xRc
int a = temp[l]; 3,G|oR{D
int b = temp[r]; yw+]S
for (i = l, j = r, k = l; k <= r; k++) { 7Z:HwZ
if (a < b) { ~b#<HG\,,
data[k] = temp[i++]; t*Ro2QZ
a = temp; f2gh|p`
} else { rz|Sjtq
data[k] = temp[j--]; 'qiAmaX
b = temp[j]; PtUS7[]
} a'Cny((
} $H3C/|
} dkEbP*yXg
xzY/$?
/** y_[VhZ%
* @param data ={cM6F}a@
* @param l CZ]Dm4
* @param i mB0`>?#i
*/ R&t2
private void insertSort(int[] data, int start, int len) { <75x@!
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); uy"i3xD6-
} 9:RV5Dt
} @6DKw;Q
} rC|nE=i
} Ag:/iB]
rusM]Z
堆排序: +|S)Mm8-
BR@gJ(2
package org.rut.util.algorithm.support; LC=M{\
K%%Ow
import org.rut.util.algorithm.SortUtil; 3`SH-"{j%
%jj-\Gz!
/** o-_,l
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* @author treeroot *$VeR(QN
* @since 2006-2-2 '.pGkXyQ
* @version 1.0 +ah4 K(+3
*/ 3C=QWw?
public class HeapSort implements SortUtil.Sort{ R$}Hv
D8w.r"ne
/* (non-Javadoc) ?\4kV*/Cqz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Nvox<d0
*/ )2W7>PY
public void sort(int[] data) { -u~:Gd*l0
MaxHeap h=new MaxHeap(); ?S=y>b9R
h.init(data); dmkGIg}
for(int i=0;i h.remove(); I31Nu{
System.arraycopy(h.queue,1,data,0,data.length); d/oD]aAEr
} h8.(Q`tli
0nI*9
private static class MaxHeap{ `3[W~Cq
py~[M'p(H
void init(int[] data){ f9_Pn'"I
this.queue=new int[data.length+1]; A`vRUl,c=
for(int i=0;i queue[++size]=data; mg70%=qM0f
fixUp(size); j4@6`[n:
} rFC9y o
} .u7grC C
v%`k*n':
private int size=0; jsV1~1:83
*}HDq(/>w
private int[] queue; F@t\D?
B[w.8e5
public int get() { h
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return queue[1]; WQw11uMt@q
} r#ADxqkaV
qS}{O0
public void remove() { 1$}Tn
SortUtil.swap(queue,1,size--); ]x& R=)P
fixDown(1); \mb@-kM)
} ;/23CFYM
file://fixdown }|=Fnyj
private void fixDown(int k) { K43`$
int j; S9b=?? M)
while ((j = k << 1) <= size) { rwwyYIlEg
if (j < size %26amp;%26amp; queue[j] j++; a&mL Dh/
if (queue[k]>queue[j]) file://不用交换 [UdJ(cGf
break; t]3:vp5N]
SortUtil.swap(queue,j,k); 3,#qt}8`
k = j; S>HfyZ&Pc
} }{J>kgr6
} fWg3gRI
private void fixUp(int k) { 7S=]@*
while (k > 1) { [ryII hQ
int j = k >> 1; E'+z.~+
if (queue[j]>queue[k]) %AT/g&M&1#
break;
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SortUtil.swap(queue,j,k); -yIx:*KI
k = j; n]l3
)u
} ;L],i<F
} Y?oeP^V'u
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} )h(=X&(d
8-L -W[
} /^si(BuC^*
p4uObK,
SortUtil: 2B6y1" B
>"zN`
package org.rut.util.algorithm; 7|ACJv6%9
V2m=
m}HQ
import org.rut.util.algorithm.support.BubbleSort; .)t*!$5=N
import org.rut.util.algorithm.support.HeapSort; (LVzE_`
import org.rut.util.algorithm.support.ImprovedMergeSort; ,4,./wIq
import org.rut.util.algorithm.support.ImprovedQuickSort; 33"!K>wC
import org.rut.util.algorithm.support.InsertSort; =ZV+*cCC=q
import org.rut.util.algorithm.support.MergeSort; dt=M#+g
import org.rut.util.algorithm.support.QuickSort; lH,/N4r*&
import org.rut.util.algorithm.support.SelectionSort; [m<8SOMG(
import org.rut.util.algorithm.support.ShellSort; C1YH\X(r
^m.%FIwR
/** HXB&
6
* @author treeroot Ni;jMc
* @since 2006-2-2 EUPc+D3
* @version 1.0 e/)Vx'd`+
*/ oSR;Im<2
public class SortUtil { sw(|EZ7F
public final static int INSERT = 1; c/-'^+9
public final static int BUBBLE = 2; r/+~4W5
public final static int SELECTION = 3; );p:[=$71
public final static int SHELL = 4; @&Af[X4s
public final static int QUICK = 5; a8y*Jz-E
public final static int IMPROVED_QUICK = 6; i Hcy,PBD
public final static int MERGE = 7; 5cr\ JR
public final static int IMPROVED_MERGE = 8; 1R.6Xer
public final static int HEAP = 9; @zsqjm
_ ^0UK|[
public static void sort(int[] data) { y&F&Z3t
sort(data, IMPROVED_QUICK); PC?XE8o
} DnB :~&Dw
private static String[] name={ Qyj:!-o
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0bQ"s*K
}; @7?L+.r$9
nG|
NRp
private static Sort[] impl=new Sort[]{ |)ALJJ=+
new InsertSort(), 3qp\jh=FE
new BubbleSort(), ^7`gf
new SelectionSort(), vri<R8
new ShellSort(), ?j8_j
new QuickSort(), YipL_&-
new ImprovedQuickSort(), phcYQqR
new MergeSort(), {%Q+Pzl.
new ImprovedMergeSort(), 7a%)/)<D
new HeapSort() / \k\HK8
}; u-wj\BU
^K'XlM`a
public static String toString(int algorithm){ #/>OW2Ny
return name[algorithm-1]; 2J6(TrQ
} s%l^zA(
#ChF{mh
public static void sort(int[] data, int algorithm) { q+9c81b
impl[algorithm-1].sort(data); (;nh?"5
} Bh q]h
eC$ Jdf
public static interface Sort { b;G#MjQp'
public void sort(int[] data); 3gs7Xj%N
} p<(b^{EX
JjH141 n%D
public static void swap(int[] data, int i, int j) { &UX:KW`=
int temp = data; \2 `|eo
data = data[j]; gCI{g.[I!
data[j] = temp; h}GzQry1
} Up1e4mNL
} /V>yF&p