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。 /.f!
插入排序: Q,O]x#
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package org.rut.util.algorithm.support; M`q#,Y?3^I
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import org.rut.util.algorithm.SortUtil; uJ7,rq
/** :nTkg[49pJ
* @author treeroot )8\Z=uC
* @since 2006-2-2 C=M?
* @version 1.0 FJ nG<5Rh
*/ l!Nvn$hm
public class InsertSort implements SortUtil.Sort{ 8g&uE*7N
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/* (non-Javadoc) g9! dpP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yFa&GxSq
*/ ;Ce 2d+K
public void sort(int[] data) { _6|
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int temp; Ab/v_mA;
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C} |O#"t^\
} Q9SPb6O2
} ]eORw$f
} s 0 =@ &/
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} ?m`R%>X"
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冒泡排序: Es_SCWJ
cM|af#o
package org.rut.util.algorithm.support; 06Sqn3MB
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import org.rut.util.algorithm.SortUtil; E]D4']
#{.pQi})
/** ^$3w&$K*
* @author treeroot a^(S!I
* @since 2006-2-2 h%4~0
* @version 1.0 ^2(";.m
*/ Ykx&6M@t
public class BubbleSort implements SortUtil.Sort{ "Vs
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/* (non-Javadoc) )3d:S*ly
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _AA`R`p;
*/ %@)U/G6s}
public void sort(int[] data) { u9da]*\7y
int temp; c1=;W$T(s
for(int i=0;i for(int j=data.length-1;j>i;j--){ Va&KIHw
if(data[j] SortUtil.swap(data,j,j-1); m^(E:6T
} OqUE4.vIP
} GhaAvyN
} j>0SE
} Fvcq^uZ
>V77X+!
} ~6pCOS}
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选择排序: 4{1c7g
rQAbN6
package org.rut.util.algorithm.support; ]&; G\9$y
4?*`:
import org.rut.util.algorithm.SortUtil; t2`X!`
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/** oQKcGUZ
* @author treeroot 9e|{z9z[l
* @since 2006-2-2 7zi^{]
* @version 1.0 ~j\;e
*/ yS(=eB_
public class SelectionSort implements SortUtil.Sort { 4
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c>%z)uY>/
/* NiU tH
* (non-Javadoc) ]ys4
* RJ7/I/yD|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'ocwXyP,
*/ ,L8I7O}A;
public void sort(int[] data) { =[O<.'aG-
int temp; FeincZ!M
for (int i = 0; i < data.length; i++) { >(YPkmH
int lowIndex = i; g@N=N
for (int j = data.length - 1; j > i; j--) { <'+R%6
if (data[j] < data[lowIndex]) { fM
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lowIndex = j; co(fGp#!
} r[i~4N=
} 0n =9TmE
SortUtil.swap(data,i,lowIndex); 8#d99dOe
} l)2HHu<
} n[S4180 9<
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} z;Gbqr?{{
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Shell排序: zrWq!F*-V\
Uz m[e%/`
package org.rut.util.algorithm.support; )x5$io
lFzQG:k@
import org.rut.util.algorithm.SortUtil; 3IRRFIiO
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/** FK/ro91L
* @author treeroot vX!dMJa0
* @since 2006-2-2 1Tts3O.
* @version 1.0 yQQDGFTb!=
*/ n=Z[w5
public class ShellSort implements SortUtil.Sort{ CgPZvB[
`)xU;-
/* (non-Javadoc) R*c0NJF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IQIb\OUo!v
*/
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public void sort(int[] data) { bx%hizb
for(int i=data.length/2;i>2;i/=2){ .w*{=x0k
for(int j=0;j insertSort(data,j,i); 4<K ,w{I
} LMhY"/hAXa
} uk>/Il
insertSort(data,0,1); k%4A::=
} x4 A TK
yz&q2
/** Qe=Q8cT
* @param data O( sFs1
* @param j (B~V:Yt
* @param i VHY<(4@
*/ 7;#dX~>@{
private void insertSort(int[] data, int start, int inc) { OYRR'X.E
int temp; lCs8`bYU
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ."#jN><t
} h0EGhJs
} `peJ s~V
} IUBps0.T\
r~BQy'
} a[{QlD^D
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快速排序: }'M1(W
[HZCnO|N
package org.rut.util.algorithm.support; :Pp;{=J
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import org.rut.util.algorithm.SortUtil; J\8l%4q3
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/** VRN9 yn2
* @author treeroot 7=ga_2
* @since 2006-2-2 >kLH6.
* @version 1.0 PXQ9P<m
*/ uB)6\fkTB
public class QuickSort implements SortUtil.Sort{ <raqp Oo&
y<LwrrJ>
/* (non-Javadoc) jU9zCMyNF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }_D5, k
*/ :+V1682u
public void sort(int[] data) { b-=[(]_$h
quickSort(data,0,data.length-1); '9F{.]
} z E7ocul
private void quickSort(int[] data,int i,int j){ +cOI`4`$
int pivotIndex=(i+j)/2; eVK<%r=
file://swap 8GAQVe^$-
SortUtil.swap(data,pivotIndex,j); QvQf@o
01d26`G$i~
int k=partition(data,i-1,j,data[j]); `?|]: 7'<
SortUtil.swap(data,k,j); mUY:S
|
if((k-i)>1) quickSort(data,i,k-1); ,Vn]Ft?n
if((j-k)>1) quickSort(data,k+1,j); .j4ziRa-
]j#$. $q
} Z
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/** 8`*9jr
* @param data %a6]gsiv2<
* @param i 9P>S[=
* @param j OL9C#er
* @return QNI|h;D
*/ hO@v\@;r
private int partition(int[] data, int l, int r,int pivot) { z#
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do{ y Q @=\'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q^+NhAMz
SortUtil.swap(data,l,r); ~ M>zO#U6
} HG6{`i
while(l SortUtil.swap(data,l,r); PY:#F|uHS`
return l; fvAV[9/-
} !'t2
<"Cwy0V kp
} - 5Wt9
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改进后的快速排序: .A[.?7g
JfINAaboi
package org.rut.util.algorithm.support; ,* vnt6C*
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import org.rut.util.algorithm.SortUtil; '\mZ7.Jj
9}Ave:X^
/** {3uSg)
* @author treeroot "RX5] eJc\
* @since 2006-2-2 3a[(GW _
* @version 1.0 64j 4P 7
*/ ovo I~k'
public class ImprovedQuickSort implements SortUtil.Sort { A,[m=9V
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private static int MAX_STACK_SIZE=4096; PC7.+;1
private static int THRESHOLD=10; )Ua2x@j'C@
/* (non-Javadoc) 5GxM?%\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9wJmX<Rm
*/ v@s`l#
public void sort(int[] data) { OQ*. ho
int[] stack=new int[MAX_STACK_SIZE]; s(9rBDoY(8
y#0Z[[I0
int top=-1; ~u&O
int pivot; ;xH'%W9z
int pivotIndex,l,r; c,%>7U(w_
!!#ale&
stack[++top]=0; f?^xh
stack[++top]=data.length-1; tf79Gb>
*B}R4Y|g
while(top>0){ SF=|++b1f
int j=stack[top--]; 3n)iTSU3
int i=stack[top--]; E1v<-UPbA
=w?cp}HW
pivotIndex=(i+j)/2; ur[bh
pivot=data[pivotIndex]; H)fo4N4ii
fy4JW,c
SortUtil.swap(data,pivotIndex,j); bUB6B
>
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file://partition pr89zkYw
l=i-1; "?.Wb L
r=j; 5|t&qUV
do{ @Od u.F1e
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W>IKy#
SortUtil.swap(data,l,r); df rr.i
} ({b/J0<@D
while(l SortUtil.swap(data,l,r); rz7b%WY
SortUtil.swap(data,l,j); gb#wrI
LMzYsXG*[
if((l-i)>THRESHOLD){ J(VZa_
stack[++top]=i; AG0x)
stack[++top]=l-1; *Yjs$'_2
} [B<{3*R_
if((j-l)>THRESHOLD){ jC8BLyGE_
stack[++top]=l+1; raZRa*C;
stack[++top]=j; yYtki
} EwZt/r
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} O]!DNN
file://new InsertSort().sort(data); Tj+WO6#V
insertSort(data); 5X-{|r3q
} n_2LkW<?
/** 4rdrl
* @param data @V u[Tg}J
*/ JPzPL\
private void insertSort(int[] data) { x;aZ&
int temp; 3Ab$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J>v>6OC6i
} 1'B?f# s
} 4"=pcHNV
} (o=iX,@'2
Q{kuB+s
} Nh-*Gt?
Vi-@z;k
归并排序: [0@i,7{ZqE
KJSy7F
package org.rut.util.algorithm.support; k/Q]Ke
@L7rE)AU.
import org.rut.util.algorithm.SortUtil; h {btT
j. cH,Y
/** f& *E;l0
* @author treeroot r?7^@
* @since 2006-2-2 O-Y E6u
* @version 1.0 @#">~P|Hp
*/ H#akE\,
public class MergeSort implements SortUtil.Sort{ $5O&[/L
A;PV,2|X
/* (non-Javadoc) _JoA=<O!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2US8<sq+
*/ K~G^jAk+
public void sort(int[] data) { 0\A[a4crj
int[] temp=new int[data.length]; s5@^g8(+C
mergeSort(data,temp,0,data.length-1); #+=afJ
} T;7|d5][
v\u+=}rl
private void mergeSort(int[] data,int[] temp,int l,int r){ 07&S^ X^/
int mid=(l+r)/2; Pr'py
if(l==r) return ; Rk^&ras_
mergeSort(data,temp,l,mid); 5#tvc4+)
mergeSort(data,temp,mid+1,r); #,C{?0!
for(int i=l;i<=r;i++){ 0KEl+
temp=data; fN;y\!q5
} u]-$]zIH
int i1=l; \!Pm^FD
.
int i2=mid+1; wvY$s;
for(int cur=l;cur<=r;cur++){ T8 k o P
if(i1==mid+1) &[xJfL
data[cur]=temp[i2++]; NU"X*g-x^
else if(i2>r) EY(4<;)
data[cur]=temp[i1++]; 0jMrL\>C
else if(temp[i1] data[cur]=temp[i1++]; Ft7l /
else DoA f,9|_
data[cur]=temp[i2++]; IFe[3mB5
} -#h
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} lU3wIB
u5,<.#EVY
} J<D =\
pK%' S
改进后的归并排序: ! >V1zk
NaIVKo
package org.rut.util.algorithm.support; na>B{6
YjT
#^AH
import org.rut.util.algorithm.SortUtil; >"b"K{t
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/** O1PdM52
* @author treeroot [ q}WS5Cp
* @since 2006-2-2 7O j9~3o4
* @version 1.0 |tkmO:
*/ ,;g:qe3D$
public class ImprovedMergeSort implements SortUtil.Sort { l\)Q3.w
a+d|9y/k
private static final int THRESHOLD = 10; Fwtwf{9I
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/* Z2r\aZ-d`
* (non-Javadoc) `1d r$U
* b`'
;`*AN+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mmn[ol
*/ ) PtaX|U
public void sort(int[] data) { +4 dHaj6
int[] temp=new int[data.length]; e3.TGv7=
mergeSort(data,temp,0,data.length-1); ;6Z?O_zp4
} SJfsFi?n
ZWv$K0agu
private void mergeSort(int[] data, int[] temp, int l, int r) { ;1WclQ!(
int i, j, k; UA^E^$f:
int mid = (l + r) / 2; 7G(X:!
if (l == r) E^s>S,U[y
return; Nz8iU@!a
if ((mid - l) >= THRESHOLD) Pj$a$C`Z
mergeSort(data, temp, l, mid); =0A{z#6
else M&L" yQA
insertSort(data, l, mid - l + 1); ]pb3
Fm{
if ((r - mid) > THRESHOLD) *|'k
mergeSort(data, temp, mid + 1, r); '5IJ;4k
else "o`(
kYSF
insertSort(data, mid + 1, r - mid); YV9%^ZaN7
p[RD[b
for (i = l; i <= mid; i++) { B{Rig5Sc
temp = data; iJcl0)|
} rW6LMkt72
for (j = 1; j <= r - mid; j++) { QH;aJ(>$
temp[r - j + 1] = data[j + mid]; =1D*K%
} 0x84 Ah)
int a = temp[l]; }w$/x<Q[
int b = temp[r]; '(Pbz
for (i = l, j = r, k = l; k <= r; k++) { p^2pv{by
if (a < b) { ~0`Pe{^*
data[k] = temp[i++]; Z`[j;=[
a = temp; 0xsvxH"*
} else {
3x#G
SS
data[k] = temp[j--]; zx^)Qb/EL6
b = temp[j]; IQ\`n|
} 7Sokn?~i
} $iV3>>;eh
} IBR;q[Dj}
u%2u%-w
/** .!&YO/
* @param data i^=an?}/
* @param l 1oC/W?l^
* @param i uzsR*x%s-
*/ 6rk/74gI,a
private void insertSort(int[] data, int start, int len) { `ul"D%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8`*(lKiL
} #)XO,^s.
} r`lgK2r\
} sbgRl%
} ;qvZ *
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堆排序: >$}nKPC,Y
xx%WIY:}
package org.rut.util.algorithm.support; ;$Wa=wHb
gxJ(u{2
import org.rut.util.algorithm.SortUtil;
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/** :QN,T3i'/3
* @author treeroot \4V'NTjB
* @since 2006-2-2 vWow^g
* @version 1.0 MjHeUf
*/ ]TGJ|X
public class HeapSort implements SortUtil.Sort{ :D&QGw(n
bju0l[;=
/* (non-Javadoc) fY>\VY$>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,u$$w
*/ |%$d/<<PZ
public void sort(int[] data) { p/@z4TCNX
MaxHeap h=new MaxHeap(); Yd]f}5F
h.init(data); b\}`L"
for(int i=0;i h.remove(); "|f ;
System.arraycopy(h.queue,1,data,0,data.length); m|p}Jf!
} }V`Fz',lZ
Q&wBX%@^L
private static class MaxHeap{ S!rUdxO
7/Ew(X8Fs
void init(int[] data){ CvlAn7r,@
this.queue=new int[data.length+1]; )M1.>?b
for(int i=0;i queue[++size]=data; K":-zS
fixUp(size); XfB;^y=u8
} 2 !{P<
} y#r=^r]l)
qD2<-E&M/
private int size=0; U;ev3
#LF_*a0v
private int[] queue; 1`b?nX
75<E 0O
public int get() { G.L4l|%W
return queue[1]; {Ke3
} i^j{l_-JE
W&GDE
public void remove() { x'}{^'}/
SortUtil.swap(queue,1,size--); m`n51i{U
fixDown(1); !5x"d7
} F
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file://fixdown |Y:T3hra61
private void fixDown(int k) { #[J..i/h
int j; AX[/S8|6
while ((j = k << 1) <= size) { G>cTqD6gT
if (j < size %26amp;%26amp; queue[j] j++; `lr\V;o!
if (queue[k]>queue[j]) file://不用交换 Jg^tr>I~
break; SxMh '
SortUtil.swap(queue,j,k); I#9A\.pO
k = j; UT"L5{c
} A9F Z`
} @"Do8p!*(6
private void fixUp(int k) { ]kc]YO7i%R
while (k > 1) { P%.9 g
int j = k >> 1; z.#gpTXD
if (queue[j]>queue[k]) D4_D{\xhO
break; +BmA4/P$
SortUtil.swap(queue,j,k); df}B:?Ew.
k = j; fyT! /
} IiSO{
} 3vDV
;9d(GP}eE
} V.;0F%zks5
`Q}.9s_ri
} Q TM+WD
;sb0,2YyP
SortUtil: URY%+u
)6Z)z;n]aW
package org.rut.util.algorithm; 3
nb3rHQ
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import org.rut.util.algorithm.support.BubbleSort; nbhx2@Teqe
import org.rut.util.algorithm.support.HeapSort; n0nkv[
import org.rut.util.algorithm.support.ImprovedMergeSort; 9NKZE?5P|D
import org.rut.util.algorithm.support.ImprovedQuickSort; HH8a"Hq)
import org.rut.util.algorithm.support.InsertSort; _/7[=e}y
import org.rut.util.algorithm.support.MergeSort; tlG&PVvr
import org.rut.util.algorithm.support.QuickSort; ;v#~o*
import org.rut.util.algorithm.support.SelectionSort; fH}`
import org.rut.util.algorithm.support.ShellSort; m&b!\"0
.b5B7x}
/** d7P|
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* @author treeroot n8J';F
=P
* @since 2006-2-2 [96|xe\s
* @version 1.0 7?b'"X"
*/ Kq{9:G
public class SortUtil { 4TUe*F@
ML
public final static int INSERT = 1; Z3"f7l6
public final static int BUBBLE = 2; Ix-FJF-
public final static int SELECTION = 3; {U7j
public final static int SHELL = 4; X2Y-TET
public final static int QUICK = 5; amgYr$)m
public final static int IMPROVED_QUICK = 6; NcRY
Ch
public final static int MERGE = 7; SbrBlP:G
public final static int IMPROVED_MERGE = 8; >e"1a/2%>&
public final static int HEAP = 9; H?M8j] R-)
r's4-\
public static void sort(int[] data) { 8V.x%T
sort(data, IMPROVED_QUICK); 4e1Zyi!
} rQ.j$U
private static String[] name={ O zY&^:>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ytr~} M%
}; bQEQHqY5
/tx_I(6F?|
private static Sort[] impl=new Sort[]{ &&TQ0w&T
new InsertSort(), ad }^Dj/
new BubbleSort(), b[VP"KZ ?
new SelectionSort(), .,UpI|b
new ShellSort(), rEz=\yY^j'
new QuickSort(), W/xb[w9v
new ImprovedQuickSort(), ,]1K^UeZ
new MergeSort(), !dStl:B
new ImprovedMergeSort(), (H0nO7Bk
new HeapSort() zd"o #(sv
}; ~{oM&I|d8
-0Y8/6](
public static String toString(int algorithm){ <wc=SMmO
return name[algorithm-1]; ?,TON5Fl-
}
jats)!:
9Jaek_A`
public static void sort(int[] data, int algorithm) { X{<j%PdC
impl[algorithm-1].sort(data); OV Iu&6#
} p7Gs
5(tOQ%AQ
public static interface Sort { IgQW 5E#
public void sort(int[] data);
&-s!ko4z
} [uW{Ap ~2
@tRq(*(/:
public static void swap(int[] data, int i, int j) { 2U)H2%
int temp = data; k g0Z(T:&8
data = data[j]; 'l!tQD!
data[j] = temp; p 8Ts5n
}
WwPfz<I
} J*A<F'^F1