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。 qV``' _=<
插入排序: B7%m7GM
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package org.rut.util.algorithm.support; h<WTN_i}
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import org.rut.util.algorithm.SortUtil; m8gU8a"(
/** N]|)O]/[
* @author treeroot 8p/&_<mnW
* @since 2006-2-2 :&RpB^]
* @version 1.0 wqX!7rD/g)
*/ =jU#0FAO
public class InsertSort implements SortUtil.Sort{ "9y0]~
`#j;\
/* (non-Javadoc) 3Ea/)EB]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .[6T7fdi
*/ >k~3W> D
public void sort(int[] data) { %kQ[zd^
int temp; ,pdf$)
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =}F$r5]
} mP_c-qD
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} :ee'|c
} ^c){N-G
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} DM(c :+K-
}. V!|R,
冒泡排序: 2 rS`ViicD
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package org.rut.util.algorithm.support; &>}f\ch/
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import org.rut.util.algorithm.SortUtil; b X/%Q^Y
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/** iR'Pc3
* @author treeroot Z. xOO|
* @since 2006-2-2 3rx8"
* @version 1.0 KU.F4I8}q
*/
-&np/tEu&
public class BubbleSort implements SortUtil.Sort{ nYnv.5
^4a|gc
/* (non-Javadoc) !L@a;L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H4ancmy
*/ NHaqT@:
public void sort(int[] data) { $# J
int temp; }#` -mRaU
for(int i=0;i for(int j=data.length-1;j>i;j--){ R]TS5b-
if(data[j] SortUtil.swap(data,j,j-1); 5VE9DTE
} 9?+?V}o
} oJ0ZZu?{D
} m Wh
} hoZM;wC
2P?|'U
} ">Y(0^^
\7*"M y*
选择排序: cGv`%
[CG*o>n&|
package org.rut.util.algorithm.support; aq.Lnbi/X
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import org.rut.util.algorithm.SortUtil; u 9kh@0
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/** :v 8~'cZ
* @author treeroot zdN(r<m9"
* @since 2006-2-2 |@pn=wW
* @version 1.0 x:`"tJa
*/ -AM(-
public class SelectionSort implements SortUtil.Sort { xn2f!\%p
`:fh$V5J>
/* DM3 %+ xY
* (non-Javadoc) vptBDfzz
* 0GMov]W?i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y"Jma`Vjq
*/ V})b.\"F
public void sort(int[] data) { c"`CvQO64
int temp; A%%Vyz
for (int i = 0; i < data.length; i++) { 9wpV} .(
int lowIndex = i; N:&EFfg3
for (int j = data.length - 1; j > i; j--) { cxn*!TwDs
if (data[j] < data[lowIndex]) { \jHIjFwQ
lowIndex = j; bTW#
f$q:4
} +VRM:&
} "aJfW
SortUtil.swap(data,i,lowIndex); Y3?)*kz%
} xw~3x*{
} (u-eL#@
pMLTXqL
} pra0:oHN
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Shell排序: w>TTu:
7
H_d^Xk QZ
package org.rut.util.algorithm.support; u{%dm5
YWF Hv@
import org.rut.util.algorithm.SortUtil; Y4{/P1F
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/** T$*#q('1"}
* @author treeroot eNu]K,rT
* @since 2006-2-2
AS/z1M_U
* @version 1.0 e&-MP;kgW9
*/ -
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public class ShellSort implements SortUtil.Sort{ 4)?s?+
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/* (non-Javadoc) !nL>Ly
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bi[g4,`Z;
*/ /p$+oA+
public void sort(int[] data) { jr/IU=u*v
for(int i=data.length/2;i>2;i/=2){ }h1y^fuGi
for(int j=0;j insertSort(data,j,i); Hq#q4Y
} /Xl(>^|&
} 7ygz52
insertSort(data,0,1); W/<Lp+p
} a%r( F
@]etW>F_
/** X}g"_wN,g>
* @param data -+[~eqRB
* @param j m=rMx]k
* @param i M)3'\x:
*/ -?w3j9kk>
private void insertSort(int[] data, int start, int inc) { /sr.MT
int temp; Ffig0K+`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )M*Sg?L
} o:`^1
} $}B&u )
} o)+C4f[G4
#j'7\SV
} mFt\xGa
Cz6bD$5
快速排序: e!vWGnY
gfiFRwC`v
package org.rut.util.algorithm.support; oiOu169]
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import org.rut.util.algorithm.SortUtil; T?CQgVR
m[ER~]L/C
/** +mN8uU~(kx
* @author treeroot a:KL{e[
* @since 2006-2-2 |XmzqX%
* @version 1.0 SgkW-#
*/ Q)\[wYMt
public class QuickSort implements SortUtil.Sort{ P| ftEF
%4})_h?j
/* (non-Javadoc) 5%+epzy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lQxEiDIL
*/ 2 ,krVb?<
public void sort(int[] data) { *0m|`-
T
quickSort(data,0,data.length-1); }(oWXwFb&W
} P!gY&>EU
private void quickSort(int[] data,int i,int j){ )5fly%-r)
int pivotIndex=(i+j)/2; #<G:&
file://swap hqV_MeHv'
SortUtil.swap(data,pivotIndex,j); }!"Cvu
:;\xyy}A
int k=partition(data,i-1,j,data[j]); iLN O}EUL
SortUtil.swap(data,k,j); r@PVSH/
if((k-i)>1) quickSort(data,i,k-1); 7!;zkou
if((j-k)>1) quickSort(data,k+1,j); =i6k[ rg
G?!8T91;
} j+e
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/** Mm!;+bM%
* @param data >8&fFq
* @param i $01~G?:]`
* @param j kx;7/fH
* @return J+wnrGoK
*/ 93=?^
private int partition(int[] data, int l, int r,int pivot) { :w)9(5
do{ 5g.Kyj|
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -j1]H"-
SortUtil.swap(data,l,r); 3GrIHiCr
} ]W5p\(1g
while(l SortUtil.swap(data,l,r); &qM8)2Y
return l; OGO\u#
} PEaZ3{-
_C19eW'
}
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C=2DxdZG
改进后的快速排序: UID`3X
hZWkw{c
package org.rut.util.algorithm.support; L-zU%`1{M
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import org.rut.util.algorithm.SortUtil; =J]M#6N0
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/** |:,`dQfw
* @author treeroot jv6>7@<G
* @since 2006-2-2 /2MZH
* @version 1.0 ;|W:,a{kS
*/ _xBhMu2f
public class ImprovedQuickSort implements SortUtil.Sort { "z=~7g
*SlWA)9Y
private static int MAX_STACK_SIZE=4096; }J2f$l>R
private static int THRESHOLD=10; /!y;h-
/* (non-Javadoc) {xOzxLB;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t<RPDQ>
*/ TtQd#mSI\
public void sort(int[] data) { [Z&<# -
int[] stack=new int[MAX_STACK_SIZE]; 1=ZQRJW0B
. ~a~(|
int top=-1; bH :C/P<x
int pivot; 73_-7'^mQ
int pivotIndex,l,r; Qz_4Ms<o
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stack[++top]=0; 7]i6 Gk
stack[++top]=data.length-1; *)oBE{6D
5@
Hg 4.
while(top>0){ fzAkUvo
int j=stack[top--]; Og8%SnEpMI
int i=stack[top--]; z46Sh&+
Cv4nl7A'
pivotIndex=(i+j)/2; Og?GYe^_
pivot=data[pivotIndex]; kV8qpw}K
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SortUtil.swap(data,pivotIndex,j); Bgp%hK
=WEDQ\ c
file://partition ] ;HCt=I~
l=i-1; @X9T"
r=j; ZS`Kj(D
do{ ^upd:q
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =Lnip<t>ja
SortUtil.swap(data,l,r); bfpoX,:
} qv|}>wU
while(l SortUtil.swap(data,l,r); FIu^Qd
SortUtil.swap(data,l,j); \'|t>|zhp
KuL+~
if((l-i)>THRESHOLD){ fKtlfQG
stack[++top]=i; =EU;%f
stack[++top]=l-1; ,p!IFS`
} vj]h[=:
if((j-l)>THRESHOLD){ mHJGpJ=a-
stack[++top]=l+1; ub+XgNO
stack[++top]=j; kjXwVGK=P<
} .YP&E1lNi
P8;1,?ou
} uc|ej9N
file://new InsertSort().sort(data); 0O-"tP8o
insertSort(data); #q-fRZ:P
} tCPK_Wws?Z
/** -"^xg"
* @param data PzhC *" i}
*/ LB9W.cA
private void insertSort(int[] data) { CC3M7|eO3
int temp; e<FMeg7n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ![J_6f}!
} d>Nh<PqH6
} A>HCX 4i
} '$J M2 u
sYvlf0
} .[3C
xO,;4uE
归并排序: V'UFc>{o
kLpq{GUv:
package org.rut.util.algorithm.support; dJdOh#8+Xi
X\i;j!;d
import org.rut.util.algorithm.SortUtil; @ `mke4>_
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/** FN (O
* @author treeroot qZv@ULluc
* @since 2006-2-2 6':Egh[;
* @version 1.0 2v#gCou
*/ wjgF e]
public class MergeSort implements SortUtil.Sort{ k`5K&
Y]uVA`%"b
/* (non-Javadoc) S1m5z,G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pf?15POg&B
*/ ]9JH.fF
public void sort(int[] data) { %Y5F@=>&
int[] temp=new int[data.length]; S2W@;XvV
mergeSort(data,temp,0,data.length-1); $jv"$0Fc
}
W/~q%\M {
{zLgLBM
private void mergeSort(int[] data,int[] temp,int l,int r){ Iek]/=
int mid=(l+r)/2; #^$_3AY
if(l==r) return ; y7GgTC/H
mergeSort(data,temp,l,mid); IY
mkZ?cW
mergeSort(data,temp,mid+1,r); 'iDkAmvD
for(int i=l;i<=r;i++){ EQ|Wke
temp=data; Kxz|0l
} !;hp
int i1=l; UISsiiG(
int i2=mid+1; @L0)k^:
for(int cur=l;cur<=r;cur++){ |L:X$oM
if(i1==mid+1) Fdq5:v?k
data[cur]=temp[i2++]; J |UFuD
else if(i2>r) S-</(,E}|
data[cur]=temp[i1++]; |
q elvK*
else if(temp[i1] data[cur]=temp[i1++]; )ZFc5m^+u
else DnW/q
data[cur]=temp[i2++]; &F Yv4J
} `~41>mM%
} &!M6{O=~
Rtl1eJ-
} JeA_mtSQ|
K]|hkp&
改进后的归并排序: 3*(><<ZC
a$bE2'cb
package org.rut.util.algorithm.support; ziM@@$.F
kmtkh"
import org.rut.util.algorithm.SortUtil; Z5EII[=$o
^gR~~t;@
/** ;lhW6;oI'
* @author treeroot P 6=5:-Hh
* @since 2006-2-2 aH8]$e8_,\
* @version 1.0 ;W FiMM\
*/ ez5>V7Y
public class ImprovedMergeSort implements SortUtil.Sort { yMD0Tj5ZQ
/V#?d
private static final int THRESHOLD = 10; +V[;DOlll
'Z#>K*
/* -C!m#"PDW
* (non-Javadoc) /WK1( B:
* wByTNA7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V-X Ty
iv
*/ pqju@FD*
public void sort(int[] data) { D>Rlm,U
int[] temp=new int[data.length]; '- #QK'p
mergeSort(data,temp,0,data.length-1); G-sQL'L[U
} %mzDmrzq
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private void mergeSort(int[] data, int[] temp, int l, int r) { Re'3 bs:+
int i, j, k; soX^$l
int mid = (l + r) / 2; q]SH'Wd
if (l == r) :1@jl2,
return; kr!>rqN5
if ((mid - l) >= THRESHOLD) N3oa!PE
mergeSort(data, temp, l, mid); !:tr\L {
else I#7H)^us
insertSort(data, l, mid - l + 1); D-x*RRkpp
if ((r - mid) > THRESHOLD) Ra:UnA
mergeSort(data, temp, mid + 1, r); vmo!
else [
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insertSort(data, mid + 1, r - mid); `G:hC5B
t\Qm2Q)>
for (i = l; i <= mid; i++) { Vh]=sd<F
temp = data; X gtn}7N.
} L;+e)I]
for (j = 1; j <= r - mid; j++) { uX&h~qE/
temp[r - j + 1] = data[j + mid]; lZ <D,&
} pigu]mj
int a = temp[l]; SxcE@WM
int b = temp[r]; 8E9k7
for (i = l, j = r, k = l; k <= r; k++) { CoWT
if (a < b) { &SPr#OkW
data[k] = temp[i++]; ilZ5a&X;
a = temp; !0):g/2h
} else { &+H\ST(/
data[k] = temp[j--]; I'N!j>5oX
b = temp[j]; BuxU+
} 'AmA3x)9u
} y$6EEp
} Y/pK
7_lgo6
/** .SOCWznb
* @param data |W&K@g$
* @param l EZhk(LE
* @param i mGoC8t}iP
*/ mD*!<<Sw
private void insertSort(int[] data, int start, int len) { P4c}@Mq3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bQI.Qk
} w6^TwjjZ$
} (Fq]y5
} oU*e=uehj
} Y ._Om}H
-B-HZ_
堆排序: C]ax}P>BQ
x@pzgqi3
package org.rut.util.algorithm.support; =CCddLO
mJH4M9WJ]
import org.rut.util.algorithm.SortUtil; [[]NnWJ
LJt5?zQKrW
/** Lw?>1rTT/
* @author treeroot &._Mh
* @since 2006-2-2 t$R0UprK
* @version 1.0 w[)HQ1K
*/ DQ0 UY
public class HeapSort implements SortUtil.Sort{ GpR,n2
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/* (non-Javadoc) '[HU!8F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n:H
|=SF{
*/ %z"$?Iv
public void sort(int[] data) { kb~ 9/)~g
MaxHeap h=new MaxHeap(); kY'C'9p
h.init(data); q>6,g>I
for(int i=0;i h.remove(); dKw[#(m5v
System.arraycopy(h.queue,1,data,0,data.length); %uo#<Ny/ I
} c^5fhmlt
k9VWyq__
private static class MaxHeap{ ]J/;Xp
6k+tO%{~
void init(int[] data){ !L/.[:X
this.queue=new int[data.length+1]; (+BrC`
for(int i=0;i queue[++size]=data; f;&XTF5D^
fixUp(size); vH E:TQo4
} uD ;T
} eq9qE^[Z&
:cP u
private int size=0; Dr}elR>~G=
SLvo)`Nc3-
private int[] queue; x@>~&eP
8%MF<
public int get() { N;=J)b|9
return queue[1]; I Qmlmu
} 8. %g&%S
=2}bQW
public void remove() { `1FNs?j
SortUtil.swap(queue,1,size--); {%\;'&@z\
fixDown(1); ax2#XSCO
} >F/E,U ]
file://fixdown RGY#0 .Z}
private void fixDown(int k) { a"k,x-EL(
int j; :U @L$
while ((j = k << 1) <= size) { e
>7Ka\
if (j < size %26amp;%26amp; queue[j] j++; y35e3
if (queue[k]>queue[j]) file://不用交换 x3jjtjf
break; 0zA:?}
SortUtil.swap(queue,j,k); \z.p [;'ir
k = j; 5yroi@KT
} 5iGz*_
m
} 'sk M$jr
private void fixUp(int k) { s>TC~d82
while (k > 1) { *r6v9
int j = k >> 1; ^[2siG
if (queue[j]>queue[k])
Bf W@f
break; X{h[
SortUtil.swap(queue,j,k); H;FzWcm
k = j; 9HlM0qE5b
} hm1.UE
} owO&[D/
pT;xoe
} gf8~Zlq4v
X:
Be'
} 4 %u\dTg/B
/j\.~=,_
SortUtil: $@WA}\D
3BB/u%N}
package org.rut.util.algorithm; g_"B:DR
@ZcI]G%
import org.rut.util.algorithm.support.BubbleSort; %V-Hy ;V
import org.rut.util.algorithm.support.HeapSort; JS&;7Z$KX
import org.rut.util.algorithm.support.ImprovedMergeSort; }7qboUG e
import org.rut.util.algorithm.support.ImprovedQuickSort; 8:
VRq
import org.rut.util.algorithm.support.InsertSort; k{^iv:
import org.rut.util.algorithm.support.MergeSort; mDA1$fj"
import org.rut.util.algorithm.support.QuickSort; :&s8G*
import org.rut.util.algorithm.support.SelectionSort; 9}d^ll&
import org.rut.util.algorithm.support.ShellSort; AxCFZf 5
!@
)JqF.
/** *+J`Yk7}
* @author treeroot )fc+B_
* @since 2006-2-2 ' KNg;
* @version 1.0 BR~+CBH
*/ Q+E)_5_sA
public class SortUtil { =jRC4]M})
public final static int INSERT = 1; hOm0ND?;1
public final static int BUBBLE = 2; _P=L| U#C
public final static int SELECTION = 3; Gn%k#
public final static int SHELL = 4; k,r}X:<6jz
public final static int QUICK = 5; Ys@\~?ym+
public final static int IMPROVED_QUICK = 6; U
H6
Jvt
public final static int MERGE = 7; R!:F}*
public final static int IMPROVED_MERGE = 8; 9]a!1
public final static int HEAP = 9; #23($CSE
=K9-
public static void sort(int[] data) { VQ4rEO=t
sort(data, IMPROVED_QUICK); U{3Pk0rZ
} <!~NG3KW[>
private static String[] name={ t\-;n:p-
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" qB3=wFI
}; )oMMDHw\
.wcKG9u
private static Sort[] impl=new Sort[]{ )AAPT7!U
new InsertSort(), XC[bEp$
new BubbleSort(), D (">bR)1
new SelectionSort(), G 2FD'Sf
new ShellSort(), gCW
{$d1=
new QuickSort(), Kd3EZo.
new ImprovedQuickSort(), bHmn0fZ9
new MergeSort(), OJ)XJL
new ImprovedMergeSort(), bN.U2 %~!
new HeapSort() SHe547X1
}; Uy{ZK*c8i
V%n7h&\%
public static String toString(int algorithm){ Ly`FU)
return name[algorithm-1]; {tF)%>\#
} Y
j*Y*LB~
9I*`~il>{
public static void sort(int[] data, int algorithm) { k\lU
Q\/O5
impl[algorithm-1].sort(data); 8POLp9>X
} '8UhYwyr
qJEtB;J'
public static interface Sort { qJ<Ghd`8v
public void sort(int[] data); .oxeo0@~
} NC{8[*Kx5
4F?O5&329i
public static void swap(int[] data, int i, int j) { 0*8uo
Wt&
int temp = data; teg[l-R"7z
data = data[j]; ~`o%Y"p%rv
data[j] = temp; G0pqiU6
}
NUGiDJ+[
} .0#{?R,