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。 Spc&X72I
插入排序: 'WzUu MCx
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package org.rut.util.algorithm.support; h*l4Y!7
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import org.rut.util.algorithm.SortUtil; 1Q_ ``.M
/** 2?H@$-x>
* @author treeroot 6)+9G_
* @since 2006-2-2 \#_@qHAG
* @version 1.0 Deog4Ol"/
*/ 1G_xP^H!
public class InsertSort implements SortUtil.Sort{ rUvwpP"k
*e, CDV
/* (non-Javadoc) ujNt(7Cz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mN7&%Z
*/ aKD;1|)
public void sort(int[] data) { Xi*SDy
int temp; 8ipW3~-4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mC"7)&,F
} 2:n|x5\H
} %y3:SUOdx
} ;_wMWl0F
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} v6KL93
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冒泡排序: i~ROQMN1
lWIv(%/@
package org.rut.util.algorithm.support; w4`!Te
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import org.rut.util.algorithm.SortUtil; 7ia"u+Y
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/** H.)fOctbO
* @author treeroot IS .g);Gj
* @since 2006-2-2 U=M#41J
* @version 1.0 2kC^7ZAwu
*/ [gTQ-
public class BubbleSort implements SortUtil.Sort{ V~JBZ}`TG<
*(>Jd|C
/* (non-Javadoc) 8R
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]C+eJ0"A
*/ THb A(SM
public void sort(int[] data) { %{=4Fa(Jux
int temp; W6hNJb
for(int i=0;i for(int j=data.length-1;j>i;j--){ '/n\Tg+
if(data[j] SortUtil.swap(data,j,j-1); Z<w,UvJa
} W&WB@)ie
} KPD@b=F
} X"laZd947>
} (=6P]~,
VvzPQ k
} sn2r>m3
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选择排序: U[blq
M
@F>[DW]O
package org.rut.util.algorithm.support; nm<L&11
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import org.rut.util.algorithm.SortUtil; p<<6}3~
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/** x|&[hFXD
* @author treeroot $z~jnc
* @since 2006-2-2 &8R-C[A
* @version 1.0 W^-hMT]uD
*/ e-&L\M
public class SelectionSort implements SortUtil.Sort { r[Z g 2
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/* *'kC8ZR5
* (non-Javadoc) bWhJ^LD
* >1_Dk7E0D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k9.u[y.
*/ g{rt ^B
public void sort(int[] data) { d#x8O4S%i2
int temp; :YkDn~@
for (int i = 0; i < data.length; i++) { WBIQ%XB'
int lowIndex = i; Y}eZPG.h
for (int j = data.length - 1; j > i; j--) { .D>A'r8U
if (data[j] < data[lowIndex]) { q8&4=eV\A
lowIndex = j; s|Imz<IE
} 3JwSgc b
} Y/QK+UMW*
SortUtil.swap(data,i,lowIndex); ]9!Gg
} TXY
} <v1_F;{n
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} 6%Cna0x:&
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Shell排序: 6
d{D3e[p^
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package org.rut.util.algorithm.support; *,Aa9wa{
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import org.rut.util.algorithm.SortUtil; )o}=z\M-bN
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/** gu~-}
* @author treeroot /i7>&ND.r
* @since 2006-2-2 fb;hf:B:
* @version 1.0 # UP,;W
*/ `UzCq06rJ1
public class ShellSort implements SortUtil.Sort{ xLGTnMYd
(RI>aDGRH
/* (non-Javadoc) jHUz`.8B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }b\ipA,~
*/ AmrJ_YP/t~
public void sort(int[] data) { rK0|9^i{
for(int i=data.length/2;i>2;i/=2){ -&HoR!af
for(int j=0;j insertSort(data,j,i); "1pZzad
} b W`)CWd
} `rRg(fCN!M
insertSort(data,0,1); _YD<Q@
} +eH=;8
(\AszLW
/** +L<w."WG
* @param data 9h)P8B.>M
* @param j C$EFh4
* @param i bx'B;rZr
*/ j2C^1:s@m
private void insertSort(int[] data, int start, int inc) { %'p|JS
int temp; d&3I>E$UP
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +&@l{x(,
} Lu u-c<*M
} YH:W]
} 3k|~tVM
]'z^Kt5S
} u6CMRZ$
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快速排序: 4<!}4
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package org.rut.util.algorithm.support; #0$eTdx#
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import org.rut.util.algorithm.SortUtil; TBLk+AR
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/**
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* @author treeroot n ;$}pg~
* @since 2006-2-2 v\L Ip
* @version 1.0 #v]aT
]}
*/ Q-3J0=
public class QuickSort implements SortUtil.Sort{ 7dL=E"WL
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/* (non-Javadoc) qy0_1xT-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j$/uJ`
*/ zz''FmedF
public void sort(int[] data) { >0G}, S
quickSort(data,0,data.length-1); (Su2\x
} x[,wJzp\6
private void quickSort(int[] data,int i,int j){ H'(o}cn7~
int pivotIndex=(i+j)/2; 8`R}L
file://swap M}RFFg
SortUtil.swap(data,pivotIndex,j); kv FOk
7G #e~,M5
int k=partition(data,i-1,j,data[j]); ]k%KTvX*G
SortUtil.swap(data,k,j); pJ@DHj2@
if((k-i)>1) quickSort(data,i,k-1); ?.'oxW
if((j-k)>1) quickSort(data,k+1,j); R^w >aZoJ
?VHwYD.B
} mf_9O
/** X2mm'JDwK
* @param data (VF4]
* @param i n"VE!`B
* @param j 70l;**"4
* @return 7=[O6<+o
*/ J!gWRw5
private int partition(int[] data, int l, int r,int pivot) { -O q=J;
do{ 29E@e]Y,`
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); t~=@r9`S
SortUtil.swap(data,l,r); IF21T
} oXOO 10
while(l SortUtil.swap(data,l,r); 4OgGZ
return l; 6xQe!d3>s3
} fP4IOlHkE
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} ~k_zMU-1
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改进后的快速排序: %>}7$Y%
;eSf4_~
package org.rut.util.algorithm.support; vnOF$6n
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import org.rut.util.algorithm.SortUtil; BY2txLLB
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/** YuW\GSV00
* @author treeroot oN}j <6s
* @since 2006-2-2 &:{yf=
* @version 1.0 zU=[Kc=$
*/ OehB"[;+
public class ImprovedQuickSort implements SortUtil.Sort { WmBnc#>gK
-m-WUox4"
private static int MAX_STACK_SIZE=4096; CUM~*
private static int THRESHOLD=10; JO$]t|I
/* (non-Javadoc) 0-O.*Q^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QU;C*}0Zl
*/ yodrX&"
public void sort(int[] data) { K#yH\fn8
int[] stack=new int[MAX_STACK_SIZE]; `I:,[3_/
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int top=-1; ^IZ0M1&W;
int pivot; <qiap2
int pivotIndex,l,r; im\Ws./
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stack[++top]=0; Bd[}A9O[
stack[++top]=data.length-1; 89dC
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while(top>0){ )[Cm*Xxa$
int j=stack[top--]; eW<hC(
int i=stack[top--]; 1T`"/*!
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pivotIndex=(i+j)/2; zW&W`(
pivot=data[pivotIndex]; NP/2gjp
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SortUtil.swap(data,pivotIndex,j); MM7gMAA.mz
,g.=vQm:?
file://partition <C xet~x
l=i-1; zYJxoC{
r=j; *mtv[
do{ 4h(Hy&1C
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); w+D5a
VJ
SortUtil.swap(data,l,r); }_TdXY
#w\
} 3E9j%sYk
while(l SortUtil.swap(data,l,r); ShxX[k
SortUtil.swap(data,l,j); EpMEA1=&
~;` #{$/C&
if((l-i)>THRESHOLD){ 6dlPS{H#U
stack[++top]=i; zD|W3hL2&
stack[++top]=l-1; 4'*K\Ul).H
} [Xg"B|FD0
if((j-l)>THRESHOLD){ ('oUcDOFTS
stack[++top]=l+1; J ASn\z
stack[++top]=j; ?a(3~dh|
} .?
/J
4[wP$
} $T0[
file://new InsertSort().sort(data); sP7 (1)\
insertSort(data); 2e=Hjf
)
} $4]PN2d&
/** gd*?kXpt
* @param data WdnP[x9
*/ ozG:f*{T
private void insertSort(int[] data) { eU0-_3gN_
int temp; [5-5tipvWp
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yFqC-t-i
} gw^+[}U#
} ~E~J*R Ze
} ^DOcw@Z6HC
FW,D\51pTP
} Y@eUvz
L&%iY7sC`
归并排序: HVpaVM
1g+<`1=KT
package org.rut.util.algorithm.support; m~A/.t%=
t=#)3C`Q}
import org.rut.util.algorithm.SortUtil; -D(!B56_
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/** Cz%ih#^b
* @author treeroot |Sq>uC)
* @since 2006-2-2 $G[##j2
* @version 1.0 he #iWD'
*/ JZ
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public class MergeSort implements SortUtil.Sort{ L`v,:#Y
98"N UT
/* (non-Javadoc) QkbN2mFv%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !/SFEL@_B
*/ ;iVyJZI
public void sort(int[] data) { 2_C.-;!
int[] temp=new int[data.length]; +Gko[<
mergeSort(data,temp,0,data.length-1); 4(]k=c1<
} @U5o;X!qU
&[uGfm+@
private void mergeSort(int[] data,int[] temp,int l,int r){ =v-D}eJQ=
int mid=(l+r)/2; q6dq@
if(l==r) return ; S6
*dp68
mergeSort(data,temp,l,mid); c-F&4V
mergeSort(data,temp,mid+1,r); >8so'7(
for(int i=l;i<=r;i++){ YuZnuI@m9
temp=data; )C[8#Q-:
} ]Az >W*Y
int i1=l; yI)2:Ca*
int i2=mid+1; Y9N:%[ :>W
for(int cur=l;cur<=r;cur++){ ak zb<aT
if(i1==mid+1) H{8\<E:V+}
data[cur]=temp[i2++]; -oj@ c
OZ
else if(i2>r) p|%)uA3'/
data[cur]=temp[i1++]; JT+P>\\];'
else if(temp[i1] data[cur]=temp[i1++]; /+iaw~={"
else 5ym
=2U
data[cur]=temp[i2++]; UT -=5
} =0Mmxd&o=M
} %Vq@WF
:BS`Q/<w
} 7@\iBmr6
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改进后的归并排序: \; ]~K6=
JG `QJ%
package org.rut.util.algorithm.support; PuWF:'w r
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import org.rut.util.algorithm.SortUtil; @4pN4v8U
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/** 0(n/hJ
* @author treeroot btOC\bUMfD
* @since 2006-2-2 N^)OlH
* @version 1.0 YeQX13C"Z
*/ &^Io\
public class ImprovedMergeSort implements SortUtil.Sort { t0Uax-E(
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private static final int THRESHOLD = 10; 4D8q Gti
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/* 8m iIlB
* (non-Javadoc) +q1@,LxN
* J<2N~$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]du pU"VV
*/ E?V:dr
public void sort(int[] data) { "(5M }5D
int[] temp=new int[data.length]; iMSS8J
mergeSort(data,temp,0,data.length-1); F[lHG,g-
}
d%<Uh(+:
g)zy^aDf
private void mergeSort(int[] data, int[] temp, int l, int r) { WVVqH_
int i, j, k; X- zg
int mid = (l + r) / 2; 0F"xU1z,
if (l == r) MDRSI g
return; B=f{`rM)~W
if ((mid - l) >= THRESHOLD) yuND0,e
mergeSort(data, temp, l, mid); qVf~\H@
else rl4-nA
insertSort(data, l, mid - l + 1); _z_uz\#,
if ((r - mid) > THRESHOLD) !cfn%+0
mergeSort(data, temp, mid + 1, r); n[<Vj1n
else {d)+a$qj
insertSort(data, mid + 1, r - mid); {2,V3*NF
h'
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for (i = l; i <= mid; i++) { >y1/*)O9~
temp = data; QDU^yVa_
} 7%X$6N-X
for (j = 1; j <= r - mid; j++) { #/n\C
temp[r - j + 1] = data[j + mid]; |XQ!xFB
} '1d-N[
int a = temp[l]; A2xORG&FD
int b = temp[r]; 18Ty)7r'
for (i = l, j = r, k = l; k <= r; k++) { $
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if (a < b) { @r#> -p
data[k] = temp[i++]; Ih.o;8PpK
a = temp; aFLm,
} else { %;gD_H4mm
data[k] = temp[j--]; R \iU)QP
b = temp[j]; U!('`TYe
} 2rA`y8g(L
} h4V.$e<T&
} c|E
k1X <jC]P
/** )+{'p0
* @param data A w83@U
* @param l L|v1=qNH4
* @param i En1pz\'
*/ xX}vxhN
private void insertSort(int[] data, int start, int len) { IKpNc+;p
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 67d0JQTu
} -E.EI@"
} AE@*#47
} F$)Ki(mq
} t.NG]ejZ
J|s4c`=
堆排序: #bnFR
/QTGZb
package org.rut.util.algorithm.support; tvI~?\Ylj
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import org.rut.util.algorithm.SortUtil; Hq=RtW2
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/** Ix"uk6 h
* @author treeroot i2EB.Zlv
* @since 2006-2-2 o#G7gzw)
* @version 1.0 .x}ImI
*/ Dk:Zeo]+my
public class HeapSort implements SortUtil.Sort{ F`'e/
B6,"S5@
/* (non-Javadoc) 9v^MZ^Y{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dw'%1g.113
*/
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public void sort(int[] data) { 2OEOb,`
MaxHeap h=new MaxHeap(); #qHo+M$"
h.init(data); O GSJR`yT
for(int i=0;i h.remove(); RzXxnx)]q
System.arraycopy(h.queue,1,data,0,data.length); R:=i/P/
} X)`?P*[
y!!p:3
private static class MaxHeap{ Aj-}G^>#
W*gu*H^s~
void init(int[] data){ [&6l=a
this.queue=new int[data.length+1]; oMcX{v^"
for(int i=0;i queue[++size]=data; +,If|5>(
fixUp(size); }56"4/ Z
} f:e~ystm
} !qT.D:!@zF
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XP*K
private int size=0; haS`V
s(F^P
private int[] queue; a(!:a+9WOP
A:>G: X5t
public int get() { jPhOk>m
return queue[1]; SI U"cO4
} (m})V0/`
3.
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public void remove() { om|M=/^
SortUtil.swap(queue,1,size--); yjc:+Y{5'
fixDown(1); ^qGH77#z
} #|)GarDG
file://fixdown B$aboL2
private void fixDown(int k) { (',G
Ako
int j; ;DBO
while ((j = k << 1) <= size) { {}[S,L
if (j < size %26amp;%26amp; queue[j] j++; .F&\xa{
if (queue[k]>queue[j]) file://不用交换 H"6:!;9,
break; p\~ lPXK
SortUtil.swap(queue,j,k); h$y1"!N(
k = j; (:-=XR9A`
} yin"+&<T
} }B^KV#_{S
private void fixUp(int k) { L9&Z?$6J_p
while (k > 1) { D:M0_4S
int j = k >> 1; >i-cR4=LL{
if (queue[j]>queue[k]) =DUsQN!
break; %mg |kb6n
SortUtil.swap(queue,j,k); ZI-)'
k = j; JuKj
} 9-I;'
} P*Uu)mG)G
|&o%c/
} {])F%Q_#cD
mq do@
} tNoo3&
/EA4-#uw
SortUtil: =&< s*-l[
&CG3_s<2
package org.rut.util.algorithm;
jI[:`
B/&axm%0
import org.rut.util.algorithm.support.BubbleSort; +UB+. 5P
import org.rut.util.algorithm.support.HeapSort; +(QGlRd
import org.rut.util.algorithm.support.ImprovedMergeSort; -%NT)o
import org.rut.util.algorithm.support.ImprovedQuickSort; A7 E*w
import org.rut.util.algorithm.support.InsertSort; P10`X&
import org.rut.util.algorithm.support.MergeSort; }2-{4JIq}
import org.rut.util.algorithm.support.QuickSort; 2>_6b>9]
import org.rut.util.algorithm.support.SelectionSort; 7JQ5OC3
import org.rut.util.algorithm.support.ShellSort; UXnd~DA
;N6L`|
/** Y6 ,< j|
* @author treeroot p(:\)HP)R
* @since 2006-2-2 8(\Az5%
* @version 1.0 [89#8|+
*/ rX)PN3TD
public class SortUtil { : DCj2"
public final static int INSERT = 1; pTX{j=n!
public final static int BUBBLE = 2; /|bir6Y:
public final static int SELECTION = 3; "n=`{~F
public final static int SHELL = 4; xzbyar<
public final static int QUICK = 5; OIe {Sx{y
public final static int IMPROVED_QUICK = 6; |JtdCP{
public final static int MERGE = 7; FU E/uh
public final static int IMPROVED_MERGE = 8; OXK?R\ E+
public final static int HEAP = 9; ubju uha"
H*?U@>UU
public static void sort(int[] data) { RgZBh04q
sort(data, IMPROVED_QUICK); dyC: Mko=
} EL;Ir tU
private static String[] name={ w$u=_
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dc|"34;^"
}; T4F}MVK
JnlM0jc]`
private static Sort[] impl=new Sort[]{ &>ii2% 4
new InsertSort(), !LVWggk1
new BubbleSort(), 2kp.Ljt@
new SelectionSort(), kVCSFF*
new ShellSort(), |[)t4A"}
new QuickSort(), =hH>]$J[
new ImprovedQuickSort(), kS%FV;9>(
new MergeSort(), I QS|
new ImprovedMergeSort(),
lc,{0$
1<
new HeapSort() ={o>g'
}; s=!
y%
'p80X^g
public static String toString(int algorithm){ qH: `
O%,
return name[algorithm-1]; \f}S Hh
} &HNJ'
wWKC.N
public static void sort(int[] data, int algorithm) { }5z6b>EI9a
impl[algorithm-1].sort(data); - /]ro8V$
} nw+L _b
$6Lgaz
public static interface Sort { 47ppyh6@
public void sort(int[] data); 0m(/hK
} rUvqAfE&+
. p^='Kz?
public static void swap(int[] data, int i, int j) { I3uaEv7OZc
int temp = data; gLa#y
data = data[j]; d+[yW7%J
data[j] = temp; Cg?D<l4
} Cg
|_) _w
} Oz#$x