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。 [iXk v\
插入排序: r }S>t~p:
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package org.rut.util.algorithm.support; dBm!`;r4
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import org.rut.util.algorithm.SortUtil; jp+s[rRc\{
/** W0+m A
* @author treeroot ()MUyW"S#`
* @since 2006-2-2 b3.}m[]
* @version 1.0 #O1%k;BL
*/ wbQs>pc
public class InsertSort implements SortUtil.Sort{ DCP
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/* (non-Javadoc) h+DK
.$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jPIOBEIG
*/ 5~FXy{ZIH
public void sort(int[] data) { .b|!FWHNS
int temp; >&[q`i{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !g[UFw
} F\2<q$Zn+
} R ~? 9+
} XK{K FB-
jaL#
} *&BS[0;
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冒泡排序: Ex+E66bE
2l}H=DZV
package org.rut.util.algorithm.support; m% %\k
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import org.rut.util.algorithm.SortUtil; `^df la
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/** -\&b&; _
* @author treeroot y:YJv x6&4
* @since 2006-2-2 }u+cS[#-
* @version 1.0 x31Jl{x8\?
*/ 7v
V~O@JP
public class BubbleSort implements SortUtil.Sort{ l.uW>AoLh
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/* (non-Javadoc) bScW<DZJ-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /s
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*/ Zvkb=
public void sort(int[] data) { !@T5]( zV
int temp; LMaY}m>
for(int i=0;i for(int j=data.length-1;j>i;j--){ MDauHtF,
if(data[j] SortUtil.swap(data,j,j-1); h\/T b8
} AP9>_0=
} 1T
8|>2m 3
} "?>hQM1R
} 'MQJt2QU9{
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} A5^tus/y
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选择排序: c,Yd#nokC
jm0v=m7
package org.rut.util.algorithm.support; @a}\]REn
4tlLh`-8
import org.rut.util.algorithm.SortUtil; $bF3v=u`
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/** lpnPd{kE
* @author treeroot }K|40oO5
* @since 2006-2-2 ' 1D1y'
* @version 1.0 7e=s`j
*/ rLE5fl5W
public class SelectionSort implements SortUtil.Sort { 5@^['S4%8*
_n+
5{\z
/* $q g/8G
* (non-Javadoc) %b>Ee>rdD
* IN?rPdY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -] `OaL!
*/ m`xzvg
public void sort(int[] data) { T7Qw1k
int temp; "qhQJql
for (int i = 0; i < data.length; i++) { HFW8x9Cc
int lowIndex = i; v5 I}a7
for (int j = data.length - 1; j > i; j--) { P( 1Z
if (data[j] < data[lowIndex]) { ;v m$F251
lowIndex = j; F/:Jp3@
} i\C~]K~O!
} M,g$
SortUtil.swap(data,i,lowIndex); Y))x'<T'Q
} ?@H/;hB[|
} y\mK?eR
z+]YB5zK%
} ok/{ w
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i
Shell排序: ~ekV*,R"
K2D,
*w
package org.rut.util.algorithm.support; <nJ8%aY,
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import org.rut.util.algorithm.SortUtil; <CN+VXF
I2)#."=Ew
/** c}mWAZ=wF
* @author treeroot O[^u<*fi{
* @since 2006-2-2 VH6J
@m
* @version 1.0 `:kI@TPI_C
*/ fvr|<3ojo
public class ShellSort implements SortUtil.Sort{ 5^C.}/#>F
gJ?Vk<hp
/* (non-Javadoc) nE=,=K~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z?)=4|
*/ 1(jDBP!8
public void sort(int[] data) { 0l2@3}e
for(int i=data.length/2;i>2;i/=2){ M5c~-}Ay
for(int j=0;j insertSort(data,j,i); 66|$X,
} c. 06Sw*
} 6HRr4NDcj
insertSort(data,0,1); 18o5Gs;yx
} Itv}TK
eF
x?RYt4 S
/** Kd;)E 9Ti
* @param data q1,jDJglZ
* @param j T[eb<
* @param i eY8rm
*/ .{4U]a;[
private void insertSort(int[] data, int start, int inc) { 1Y{pf]5Wx
int temp; Q$8K-5U%
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =k:yBswi
} /Bp5^(s
} @aUQy;
} evGUl~</~
h9I vuv'
} S94S[j0D
CC,CKb
快速排序: mH/9J
o((!3H{D
package org.rut.util.algorithm.support; Qgxpq{y
`w EAU7m:
import org.rut.util.algorithm.SortUtil; U$7]*#@&
sU0W)c;
/** ~;yP{F8?
* @author treeroot bL0>ul"
* @since 2006-2-2 Zk>#T:{h
* @version 1.0 4#lOAzDtv
*/ $HP<C>^Z8
public class QuickSort implements SortUtil.Sort{ R_2T"
JXq l=/%
/* (non-Javadoc) GEtzLaq<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cnv?0to2l
*/ Z\>mAtm
public void sort(int[] data) { ^!rAT1(/_
quickSort(data,0,data.length-1); ph>0?Z =bn
} 8C8,Q\WV(~
private void quickSort(int[] data,int i,int j){ s5J?,xu
int pivotIndex=(i+j)/2; A8T8+M:
file://swap 1Uk Gjw1J
SortUtil.swap(data,pivotIndex,j);
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U o[\1)
int k=partition(data,i-1,j,data[j]); nd,2EX<bE
SortUtil.swap(data,k,j); x*!%o(G
if((k-i)>1) quickSort(data,i,k-1); 'nN'bVl/
if((j-k)>1) quickSort(data,k+1,j);
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hj,y l&
} W]I+Rlv)U
/** c0QKx=
* @param data N~tq]
* @param i D\^\_r):
* @param j s2"<<P[q'
* @return f"R'Q|7D
*/ cf,^7,-`"
private int partition(int[] data, int l, int r,int pivot) {
::sk)
do{ \S0QZQbz/
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w7Ij=!)
SortUtil.swap(data,l,r); ?,w9e|
} I R~szUY6
while(l SortUtil.swap(data,l,r); uU/'oZ?
return l; "Z)zKg
} z!aU85y
-+y3~^EYm,
} _K3;$2d|R
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改进后的快速排序: ET;-'vd
Ou{VDE
package org.rut.util.algorithm.support; w+gPU1|(r
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import org.rut.util.algorithm.SortUtil; 7V-uQ)*
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/** `\yQn7 Oq
* @author treeroot 5DL(#9F8b9
* @since 2006-2-2 )yUSuK(Vu
* @version 1.0 La$?/\Dv)
*/ 0t%`jY~%
public class ImprovedQuickSort implements SortUtil.Sort { ^#]eCXv
ZG(Pz9{K
private static int MAX_STACK_SIZE=4096; X*t2h3"}
private static int THRESHOLD=10; NIG*
}[}P
/* (non-Javadoc) K"8!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |!L0X@>
*/ F#a'N c9
public void sort(int[] data) { ('+C $
int[] stack=new int[MAX_STACK_SIZE]; Ge1"+:tbJ
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int top=-1; KM/c^a4V
int pivot; X'p%K/-m
int pivotIndex,l,r; pYh\l.@qf
4VhKV JX
stack[++top]=0; nw0Tg= P
stack[++top]=data.length-1; 7
lu_E.Bv
Mp06A.j[
while(top>0){ ^bECX<,H
int j=stack[top--]; 8aTo
TA7JA
int i=stack[top--]; as"@E>a
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pivotIndex=(i+j)/2; cUTG!
P\R
pivot=data[pivotIndex]; T:g%b @
p21li}Iu
SortUtil.swap(data,pivotIndex,j); PV-B<Y
@zT2!C?^L
file://partition Zou;o9Ww
l=i-1; %II o
r=j; gnlU
do{ ^GNL:D%6d
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #!t6'*
SortUtil.swap(data,l,r); .gY=<bG/fA
} T>w;M?`9K
while(l SortUtil.swap(data,l,r); r |2{(+
SortUtil.swap(data,l,j); Li9>RY+3
E+J +fi
if((l-i)>THRESHOLD){ yeA]j[ #
stack[++top]=i; A}i>ys
stack[++top]=l-1; 5YLc4z*
} 6ipQx/IQ
if((j-l)>THRESHOLD){ {}P~nP
stack[++top]=l+1; 8d(l)[GZt
stack[++top]=j; r ?z}TtDp
} _z>%h>L|g
DS ;.)P"
} BOv ^L?)*Z
file://new InsertSort().sort(data); }O2P>Z?V
insertSort(data); De<i
8/^=
} Kxi@"<`S
/** Rg3g:TV9c
* @param data \zhCGDm1_
*/ !{vZvy"
private void insertSort(int[] data) { M|7][!<G!
int temp; 9r
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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); d3NER} f4V
} .x1.` Y
} 37*2/N2
} *vT Abk$
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} : :928y
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归并排序: |][PbN
D
kArF Gb2c
package org.rut.util.algorithm.support; BwVq:)P/R
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import org.rut.util.algorithm.SortUtil; ?O0,)hro
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/** JY%l1:}G3
* @author treeroot eh,_g.
* @since 2006-2-2 s\(@f4p
* @version 1.0 V!s#xXD }
*/ 57EL&V%j
public class MergeSort implements SortUtil.Sort{ z6fY_LL
&UAYYH
/* (non-Javadoc) rd,!-w5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %
@!hf!
*/ qR
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public void sort(int[] data) { sTvw@o*
int[] temp=new int[data.length]; p{&o{+c
mergeSort(data,temp,0,data.length-1); 4^!%>V"d/
} A(z
m
[_*?~
private void mergeSort(int[] data,int[] temp,int l,int r){ q-S#[I+g
int mid=(l+r)/2; VRg
y
if(l==r) return ; oAvLSFn
mergeSort(data,temp,l,mid); c=re(
mergeSort(data,temp,mid+1,r); NleMZ
for(int i=l;i<=r;i++){ $p*.[)
temp=data; _jaB[Q=By
} L#fK
,r8
int i1=l; o'? WWJK6w
int i2=mid+1; .]N`]3$=
for(int cur=l;cur<=r;cur++){ <(1[n
pS&+
if(i1==mid+1) s<5P sR
data[cur]=temp[i2++]; l!:L<B
else if(i2>r) uW4.Q_O!H
data[cur]=temp[i1++]; yoM^6o^,D
else if(temp[i1] data[cur]=temp[i1++]; #!P>.".
else Q~` {^fo1
data[cur]=temp[i2++]; x#hSN|'"
} TV/ EC#48
} <KX+j,4
wGWv<<Qw"
} +]Ev
spWo{
改进后的归并排序: ^OK;swDW
RQ4+EW1G
package org.rut.util.algorithm.support; $y%IM`/w
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import org.rut.util.algorithm.SortUtil; D$VRE^k
< Yc)F.:
/** r(rT.D&
* @author treeroot @S 0mNA
* @since 2006-2-2 7tne/Yz
* @version 1.0 N|/gwcKe
*/ X2{Aa T*M
public class ImprovedMergeSort implements SortUtil.Sort { eV"Uv3
)"_&CYnd
private static final int THRESHOLD = 10; u(8dsgR
V5gr-^E
/* QY*F(S,\
* (non-Javadoc) B_RF)meux
* f/"IC;<~t>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # hw;aQ
*/ yE;S6 O
public void sort(int[] data) { COj^pdE3
int[] temp=new int[data.length]; =h.`
ey
mergeSort(data,temp,0,data.length-1); m ;wj|@cF
} ^2i$AM1t
OHv9|&Tpl
private void mergeSort(int[] data, int[] temp, int l, int r) { n*caP9B
int i, j, k; \Qq YH^M
int mid = (l + r) / 2; .pH 4[~
if (l == r) u/xP$
return; @VyF'
?}
if ((mid - l) >= THRESHOLD) k#Qjm9V
mergeSort(data, temp, l, mid); 1B$8<NCQ=?
else 7|
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insertSort(data, l, mid - l + 1); 5acC4v!T
if ((r - mid) > THRESHOLD) Vddod
mergeSort(data, temp, mid + 1, r); ]hRs -x
else "V5_B^Gzb]
insertSort(data, mid + 1, r - mid); ]#7baZ
ONUa7
for (i = l; i <= mid; i++) { -s^cy+jd
temp = data; w^:@g~
} e0IGx]5i
for (j = 1; j <= r - mid; j++) { pp2 Jy{\d
temp[r - j + 1] = data[j + mid]; \"$q=%vD
} 6U,:J'5gP
int a = temp[l]; X5= Ki
$+
int b = temp[r]; bPMf='F{r
for (i = l, j = r, k = l; k <= r; k++) { i%MR<M
if (a < b) { a(uQGyr[k1
data[k] = temp[i++]; #v4^,$k>
a = temp; 4-9cp=\PE
} else { "9Br)3
data[k] = temp[j--]; QaXdO=3
b = temp[j]; mS.!lkV
} yr)e."#S
}
U^-RyE!}
} Ifq|MZ\
kjr q;j:
/** 5nK|0vv%2
* @param data r^Soqom3
* @param l ObataUxQT
* @param i k"cKxzB
*/ I,V'J|=j
private void insertSort(int[] data, int start, int len) { [7[$P.MS{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^plP1c:
} !_?HSDAj"n
} <!X]$kvG
} N8!e(YK_
} -CPLgT
]ij:>O@{$
堆排序: UYpln[S
GF0Utp:Zf;
package org.rut.util.algorithm.support; ^SS9BQ*m
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import org.rut.util.algorithm.SortUtil; NNRKYdp,
f&XM|Bg
/** 1+-F3ROP
* @author treeroot r?`7i'
* @since 2006-2-2 myB!\WY
* @version 1.0 1z3I^gI*i
*/ T8vMBaU!qY
public class HeapSort implements SortUtil.Sort{ 6|1#Prj
>~&7D`O
/* (non-Javadoc) ;;LiZlf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =gSACDTc
*/ \BSPv]d
public void sort(int[] data) { o7g6*hJz
MaxHeap h=new MaxHeap(); 92*Y( >
h.init(data); v2mqM5Z
for(int i=0;i h.remove(); fy!,cK};
System.arraycopy(h.queue,1,data,0,data.length); `]<~lf
} !i=k=l=
E+eC #!&w
private static class MaxHeap{ uL@'Hv A
P"c7h7
void init(int[] data){ r}t%DH
this.queue=new int[data.length+1]; y;HJ"5.Mw
for(int i=0;i queue[++size]=data; Pu!%sG jD
fixUp(size); 1;+(HB
} .PJ_1
} N)$yBzN
hfQ^C6yR
private int size=0; i(<do "Am<
_NM=9cWd
private int[] queue; "gi 1{
D5
^Wi Q<
public int get() { -Cf<
#'x_
return queue[1]; qd?k#Gw&
} YCB=RT]&`
skfFj&_T
public void remove() { -ID!kZx
SortUtil.swap(queue,1,size--);
p:^;A/D
fixDown(1); %g%#=a;]q
} "8`f x
file://fixdown {-\VX2:;[9
private void fixDown(int k) { _6Fj&mw(u
int j; Nc :>]
while ((j = k << 1) <= size) { .e%B'
if (j < size %26amp;%26amp; queue[j] j++; :. a}pgh
if (queue[k]>queue[j]) file://不用交换 _ ;_NM5
break; B1a&'WX?
SortUtil.swap(queue,j,k); BM]sW:-v
k = j; 'm+)n08[
} [.`#N1-@M
} B^uQv|m
private void fixUp(int k) { W%RjjLJ@
while (k > 1) { "5R8Zl+
int j = k >> 1; ``mW\=fe
if (queue[j]>queue[k]) `l95I7
break; gb_k^wg~1'
SortUtil.swap(queue,j,k); E`SFr
k = j; I 0}+}{M:
} t,K_!-HX+
} &Q"Ox{~W
we&g9j'
} C0F#PXUy
{'#^
} 29E9ZjSK
\f_YJit
SortUtil: %maLo RJ
%Ot^G%34
package org.rut.util.algorithm; 3N,!y
=@>[
import org.rut.util.algorithm.support.BubbleSort; I)Dd"I
import org.rut.util.algorithm.support.HeapSort; NK+iLXC
import org.rut.util.algorithm.support.ImprovedMergeSort; @iwg`j6ol
import org.rut.util.algorithm.support.ImprovedQuickSort; :8bz+3p
import org.rut.util.algorithm.support.InsertSort; 4=>4fia&D
import org.rut.util.algorithm.support.MergeSort; nx >PZb
import org.rut.util.algorithm.support.QuickSort; 8*^Q#;^~99
import org.rut.util.algorithm.support.SelectionSort; m4~Co*]w
import org.rut.util.algorithm.support.ShellSort; 1dF=BR8
{g *kr1JM
/** {%5tqF
* @author treeroot u"\HBbBx
* @since 2006-2-2 E,nC}f
* @version 1.0
ajayj|h
*/ HUtuU X
public class SortUtil { KF|<A@V
public final static int INSERT = 1; z Uqt^_
public final static int BUBBLE = 2; 3Q`F x
public final static int SELECTION = 3; yD+)!q"
public final static int SHELL = 4; &LO<!WKQ
public final static int QUICK = 5; Y
zXL8
public final static int IMPROVED_QUICK = 6; hgCeU+ H
public final static int MERGE = 7; hmOhXE[a&
public final static int IMPROVED_MERGE = 8; SR#X\AWM
public final static int HEAP = 9; 33_YZOy^j
#k1%}k=
public static void sort(int[] data) { n_%JXm#\
sort(data, IMPROVED_QUICK); mKwhd} V
} iXc-_V6
private static String[] name={ MX 2UYZ&
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [EDw0e
}; rHu #
CE>RAerY
private static Sort[] impl=new Sort[]{ Yz0ruhEMk
new InsertSort(), #~54t0|Cd>
new BubbleSort(), N0GID-W!/~
new SelectionSort(), lM C4j
new ShellSort(), <D4.kM
new QuickSort(), SeBbI&Ju
new ImprovedQuickSort(), &%`IPhbT
new MergeSort(), x"~F=jT
new ImprovedMergeSort(), *Wv]DV=\
new HeapSort() ,ijgq EN
}; HHD4#XcU
2>#Pt^R:C
public static String toString(int algorithm){ MI|DOp
return name[algorithm-1]; dWE[*a\g
} eP-q[U?$n
G8@({EY
public static void sort(int[] data, int algorithm) { =*qu:f\y
impl[algorithm-1].sort(data); ;uNcrv0J
} fR}|CP
AZxx%6
public static interface Sort { |HJdpY>Uu
public void sort(int[] data); n8Jx;j
} kssS,Ogf\_
X%xX3e'
public static void swap(int[] data, int i, int j) { m1=3@>
int temp = data; Y:]~~-f\~
data = data[j]; }-k<>~FA
data[j] = temp; x`w
4LF
} C<2vuZD
} 1agyT