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。 # |[@Due
插入排序: o}Np}PE6
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package org.rut.util.algorithm.support; cs;Gk:
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import org.rut.util.algorithm.SortUtil; wVtBeZa
/** $Ws2g*i
* @author treeroot @sO.g_yM
* @since 2006-2-2 |JQKxvjT
* @version 1.0 &2pM3re/f
*/ /*HSAjv
public class InsertSort implements SortUtil.Sort{ H9!*DA<W
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/* (non-Javadoc) S@($c'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yo6IY
*/ 7}.(EZ0
public void sort(int[] data) { YWFHiB7x
int temp; 7z&u92dJI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `" Pd$jW
} "ZW*O{
} )\G#[Pc7
} t]%R4ymV
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} 3$;v# P$%N
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冒泡排序: \vQ (
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package org.rut.util.algorithm.support; )6WU&0>AU8
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import org.rut.util.algorithm.SortUtil; y&]D2"I
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/** D40VJ3TUc
* @author treeroot MWf%Lh;R
* @since 2006-2-2 b1!%xdy_T
* @version 1.0 R!CUR~F
*/ v*v&f!Ym&s
public class BubbleSort implements SortUtil.Sort{ Kn|dnq|G
)dcGV$4t[
/* (non-Javadoc) *A`^ C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6j#5Ag:
*/ Qz;"b!
public void sort(int[] data) { $=R\3:j
int temp; cG6+'=]3<
for(int i=0;i for(int j=data.length-1;j>i;j--){ \v Go5`
if(data[j] SortUtil.swap(data,j,j-1); 4+:u2&I
} v)EJ|2`
} YN[D^;}
} N@S;{uK
}
t-/^ O
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} gO36tc:ce
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选择排序: me" <+6
{S!~pn&^Y
package org.rut.util.algorithm.support; T^t`Hp
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import org.rut.util.algorithm.SortUtil; uc8>B&B%
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/** 0c)19Ig
* @author treeroot YQJ_t@0C
* @since 2006-2-2 []NAV
* @version 1.0 QH:i)v*
*/ ~Tolz H!
public class SelectionSort implements SortUtil.Sort { ;$]R#1i44
lM]7@A
/* a*`J]{3G
* (non-Javadoc) $[e*0!e
* r@aFB@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S7R^%Wck/6
*/ WObfHAp.
public void sort(int[] data) { .H"gH-I
int temp; V-57BKeDz
for (int i = 0; i < data.length; i++) { ( ;q$cKy
int lowIndex = i; X8<ygci+.5
for (int j = data.length - 1; j > i; j--) { +8"H%#~
if (data[j] < data[lowIndex]) { ;x"B ):?\
lowIndex = j; 1Low[i
} z$A5p4=B'^
} r&w>+KIt
SortUtil.swap(data,i,lowIndex); 6O?O6Ub
} @ M-bE=
} }|;n[+ }
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} BDA\9m^3
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Shell排序: F6Ixu_s
.u)YZN0\
package org.rut.util.algorithm.support; 5UqCRz<,R
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import org.rut.util.algorithm.SortUtil; y g7z?AZ
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/** 99x]DY
* @author treeroot <K~#@.^`
* @since 2006-2-2 |<S9nZg%p
* @version 1.0 (fl2?d5+C
*/ pn)5neX{
public class ShellSort implements SortUtil.Sort{ Sc(2c.HO*
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/* (non-Javadoc) Ty5\zxC|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i^( 0,L
*/ I]h+24_S
public void sort(int[] data) { wTLHg2'y^
for(int i=data.length/2;i>2;i/=2){ `S2=LJ
for(int j=0;j insertSort(data,j,i); |Ia46YS
} ;tj_vmZ@R
} "dt3peH
insertSort(data,0,1); PGJ?=qXr#
} cCwT0O#d
w% M0Mu
/** DF#Ob( 1
* @param data 8Og9P1jVh
* @param j ) ":~`Z*@
* @param i }9'rTLM
*/ Jyn>:Yq(
private void insertSort(int[] data, int start, int inc) { J{91 t |
int temp; kZ2+=/DYN
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eL],\\q
} uE>}>6)b
} tG6 o^
} tcs
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} A="h}9ok
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快速排序: ?/O+5rjA
/OZF3Pft
package org.rut.util.algorithm.support; $0WAhq
s%Z3Zj(,8(
import org.rut.util.algorithm.SortUtil; _A(J^;?
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/** P5Fm<f8\
* @author treeroot V'_^g7}l&
* @since 2006-2-2 4Hu.o 7
* @version 1.0 ^0VI J)y
*/
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public class QuickSort implements SortUtil.Sort{ `XTu$+
3)=$BSC%
/* (non-Javadoc) oo2VT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OyVp 3O
*/ Fw=-gb_.
public void sort(int[] data) { xi-^_I
quickSort(data,0,data.length-1); <K)^MLgN
} fO9e ;
private void quickSort(int[] data,int i,int j){ )y8$-"D(it
int pivotIndex=(i+j)/2; s+4G`mq>*
file://swap 6$IAm#
SortUtil.swap(data,pivotIndex,j); q4VOK
'N
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int k=partition(data,i-1,j,data[j]); ' e-FJ')|
SortUtil.swap(data,k,j); QkA79%;j
if((k-i)>1) quickSort(data,i,k-1); @o8\`G
if((j-k)>1) quickSort(data,k+1,j); .L8S_Mz
_m@QeO'yh
} K'y;j~`-
/** jn]{|QZ
* @param data )@Ly{cw
* @param i ?g!py[CrE
* @param j norWNm(n
* @return W"$'$h
*/ G|.>p<q
private int partition(int[] data, int l, int r,int pivot) { <pz;G}
do{ $ U<xrN>O
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,Xao{o(
SortUtil.swap(data,l,r); CfAX,f"ZP
} m(?M]CH(A
while(l SortUtil.swap(data,l,r); A|jaWZM-
return l; RXh/[t+
} bA1uh]oB
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} WPLAh_fe
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改进后的快速排序: *V>Iv/(
U<*ZY` B3
package org.rut.util.algorithm.support; ;/$zBr`'
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import org.rut.util.algorithm.SortUtil; faThXq8B
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/** +oeO0
* @author treeroot w$pBACX
* @since 2006-2-2 [CJ&Yz Ji
* @version 1.0 0IxXhu6v
*/ @2]_jW
public class ImprovedQuickSort implements SortUtil.Sort { M&xfQNE
:FB#,AOa_
private static int MAX_STACK_SIZE=4096; we!}"'E;
private static int THRESHOLD=10; +:;r} 7Zh
/* (non-Javadoc) _a^%V9t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y$7<ZBG
*/ 9)'L,Xt4:T
public void sort(int[] data) { m8fxDepFA
int[] stack=new int[MAX_STACK_SIZE]; UV$v:>K#
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int top=-1; 2vT>hC?oHz
int pivot; J)6f"{} &
int pivotIndex,l,r; B$sB1M0q
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stack[++top]=0; +U%
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stack[++top]=data.length-1; {!@Pho) Q
\2@OS6LUe
while(top>0){ IZoa7S&t
int j=stack[top--]; \5cAOBja
int i=stack[top--]; ._Wm%'uX
XX#YiG4|J
pivotIndex=(i+j)/2; '3
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pivot=data[pivotIndex]; Jn-iIl
ul1#_xp
SortUtil.swap(data,pivotIndex,j); ng^`s}?o
Z[s{
file://partition G ,An8GR%&
l=i-1; k/ls!e?
r=j; W/OZ}ky}^
do{ ](vOH#E
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1^TOTY
SortUtil.swap(data,l,r); .|;`qUo
} x~rIr#o
while(l SortUtil.swap(data,l,r); aPWlV= oG
SortUtil.swap(data,l,j); _py%L+&{
lZ'-?xo
if((l-i)>THRESHOLD){ +eg$Z]Lht
stack[++top]=i; 8lh{ R
stack[++top]=l-1; -=I*{dzly
} G$<FQDvs
if((j-l)>THRESHOLD){ p
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stack[++top]=l+1; Tj$D:xKf)
stack[++top]=j; =rFgOdj
} 3FR'N%+
<sE0426
{
} @.6l^"L
file://new InsertSort().sort(data); c%n[v3]
insertSort(data); <H::{
} !7]4sXL{
/** % V/J6
* @param data ]W-l1
*/ P33x/#VVE
private void insertSort(int[] data) { u(S~V+<@Z
int temp; v `9IS+Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2&S*> (
} n(\5Z&
} X!KjRP\\
} sluR@[l
l:5x*QSX
} *"2TT})
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归并排序: ' !>t( Sa
21_>|EKp
package org.rut.util.algorithm.support; Wt*&_+ae
/~Zxx}<;
import org.rut.util.algorithm.SortUtil; bX23F?
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/** t:X\`.W
* @author treeroot ]{;=<t6
* @since 2006-2-2 ?{ns1nW:
* @version 1.0 I'%vN^e^
*/
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public class MergeSort implements SortUtil.Sort{ &_n~# Mex
t&MJSFkiA
/* (non-Javadoc) Q5b~5a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F?TxViL
*/ Z6#}6Y{
public void sort(int[] data) { WB<_AIt+
int[] temp=new int[data.length]; ?]+{2&&$
mergeSort(data,temp,0,data.length-1); v0&E!4q*'
} AX!YB'm-
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private void mergeSort(int[] data,int[] temp,int l,int r){ ~vgm;O
int mid=(l+r)/2; zBg>I=hiG
if(l==r) return ; R`sU5 :n
mergeSort(data,temp,l,mid); >jMq-#*4
mergeSort(data,temp,mid+1,r); hY XH9:
for(int i=l;i<=r;i++){ aVcQ
temp=data; xFvDKW)_X7
} {W*_^>;K
int i1=l; J-yj&2
int i2=mid+1; 8:E)GhX
for(int cur=l;cur<=r;cur++){ \}[{q
if(i1==mid+1) `&]<_Jc1
data[cur]=temp[i2++]; 4
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else if(i2>r)
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data[cur]=temp[i1++]; Q[+&n*
else if(temp[i1] data[cur]=temp[i1++]; <J" 7ufHSQ
else XG2&_u&
data[cur]=temp[i2++]; frV* +
} ^|-*amh
} ocOzQ13@Y
4Rj;lAlwB
} WxwSb`U|
/3`#ldb%}
改进后的归并排序: mkH{%7n
"|<6bA
package org.rut.util.algorithm.support; t:y}
7un
)*<=:
import org.rut.util.algorithm.SortUtil; {!h|(xqN+
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/** ;{'{*g[
* @author treeroot a![x^@nF
* @since 2006-2-2 U^+xCX<
* @version 1.0 {KkP"j'7h
*/ hwgLJY?
public class ImprovedMergeSort implements SortUtil.Sort { ?z,^QjQ}
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private static final int THRESHOLD = 10; wX dtY
44;ZX$HL
/* "]*16t%Z%x
* (non-Javadoc) LS1r}cl
* Fl)p^uUtl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M->/vi
*/ bMWL^ *I
public void sort(int[] data) { P=v 0|Y*q|
int[] temp=new int[data.length]; *6uZ"4rb.
mergeSort(data,temp,0,data.length-1); }py6H[
} R1.No_`PHq
N$u;Q(^
private void mergeSort(int[] data, int[] temp, int l, int r) { d:KUJ
Y.
int i, j, k; !=%E&e]
int mid = (l + r) / 2; GMc{g
if (l == r) )nJo\HFXv
return; c6zghP3dR
if ((mid - l) >= THRESHOLD) *5KV DOd
mergeSort(data, temp, l, mid); 88c-K{}3
else mDJF5I
insertSort(data, l, mid - l + 1); )C>4?)
if ((r - mid) > THRESHOLD) }~gBnq_DDU
mergeSort(data, temp, mid + 1, r); jET$wKw%
else `LD#fg*
insertSort(data, mid + 1, r - mid); m(Hb! RT
_"BYnPq@wb
for (i = l; i <= mid; i++) { :=J~t@
temp = data; h4@v.GI
} cW+6Emh
for (j = 1; j <= r - mid; j++) { ,SEC~)L
temp[r - j + 1] = data[j + mid]; (dSf>p r2
} &{#4^.Q
int a = temp[l]; |Ld/{&Qr
int b = temp[r]; OGmOk>_
for (i = l, j = r, k = l; k <= r; k++) { _Ju@<V$
if (a < b) { F_8<
tA6
data[k] = temp[i++]; w h4WII
a = temp; -w8c;5X
} else { *eE&ptx1
data[k] = temp[j--]; x9fNIuAQ
b = temp[j]; t- Rp_2t
} 8<z]rLQw?%
} S<RJ46
} Z#8O)GK
Rg/*)SKj
/** QBi&Q%p iy
* @param data T<!&6,N A
* @param l &[]0yNG
* @param i 7"L`|O?8)
*/ x --buO
private void insertSort(int[] data, int start, int len) { -8-BVU
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3Q-i%7l
} l=jfgsjc
} L,I5/K6
} SoS GQ&k
} yHvF"4]
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堆排序: nxzdg5A(w
ZzDE
package org.rut.util.algorithm.support; .A;D-"!
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import org.rut.util.algorithm.SortUtil; &w{""'
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/** 76i)m!
* @author treeroot {Vz.|
a[T
* @since 2006-2-2 kNX"Vo]1
* @version 1.0 A aLj.HR
*/ mp2J|!Lx
public class HeapSort implements SortUtil.Sort{ ~T<yp
d
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/* (non-Javadoc) @^Tof5?F?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
x Bn+-V
*/ ,X Zo0!
public void sort(int[] data) { ]lj,GD)c
MaxHeap h=new MaxHeap(); x,W)qv
h.init(data); 3JuWG\r)l
for(int i=0;i h.remove(); yRQR@
System.arraycopy(h.queue,1,data,0,data.length); &V;^xMO!
} P.bBu
(;1FhIi&
private static class MaxHeap{ #BQ7rF7CNE
R/)cEvB-0
void init(int[] data){
t#s?:
this.queue=new int[data.length+1]; LM:|Kydp3
for(int i=0;i queue[++size]=data; 2mVcT3
fixUp(size); 3`@alhD'
} r3X|*/
} G5y>v^&H
SJY<#_b
private int size=0; [n/'JeG5
l?CUd7P(a
private int[] queue; 8y;W+I(71
%GUu{n<6
public int get() { j{,3!
return queue[1]; ZM oV!lu
} @=o1q=5@8
wT?.Mte
public void remove() { uWw4l"RK`
SortUtil.swap(queue,1,size--); eto3dJ!R
fixDown(1); y(&JE^GfX
} XCU.tWR:
file://fixdown HA%%WSuf
private void fixDown(int k) { b#h?O}
int j; tjZ.p.IlG
while ((j = k << 1) <= size) { mQt';|X@
if (j < size %26amp;%26amp; queue[j] j++; +pU\;x
if (queue[k]>queue[j]) file://不用交换 2XJn3wPi
break; '| Enc"U
SortUtil.swap(queue,j,k); ND[u$N+5x"
k = j; '0g1v7Gx
} qJ QE|VM&
} "@!z+x[8
private void fixUp(int k) { ZN!OM)@:!
while (k > 1) { mIVnc`3s
int j = k >> 1; bX#IE[Yp}
if (queue[j]>queue[k]) "&/:"~r
break; t
?8
?Ok
SortUtil.swap(queue,j,k); /sY(/ JE
k = j; gd'#K~?
} QC.WR'.
} xq_%|p}y
%&KJtKe
} ia15r\4j)
c;_GZ}8
} .+3= H@8h
Ko6tp9G
SortUtil: Z;shFMu
&fA`Od6l"
package org.rut.util.algorithm; v{Cts3?Br
<apsG7(7
import org.rut.util.algorithm.support.BubbleSort; ]T\K-;i
import org.rut.util.algorithm.support.HeapSort; >B$ZKE
import org.rut.util.algorithm.support.ImprovedMergeSort; Saa#Mj`M
import org.rut.util.algorithm.support.ImprovedQuickSort; ]bO{001y,
import org.rut.util.algorithm.support.InsertSort; 0gPz|v>z
import org.rut.util.algorithm.support.MergeSort; jI@0jxF
import org.rut.util.algorithm.support.QuickSort; nt\6o?W
import org.rut.util.algorithm.support.SelectionSort; FRI<A8
import org.rut.util.algorithm.support.ShellSort; *leQd^47
wVk2Fr(
/** "!<Kmh5
* @author treeroot ";B.^pBv@;
* @since 2006-2-2 NL&(/72V
* @version 1.0 3F2> &p|7
*/ |33pf7o
public class SortUtil { tr"iluwGc
public final static int INSERT = 1; %?+A.0]E
public final static int BUBBLE = 2; B&A4-w v
public final static int SELECTION = 3; |RwpIe8~
public final static int SHELL = 4; 5sC{5LJzC
public final static int QUICK = 5; +]H9:ARI
public final static int IMPROVED_QUICK = 6; !o~% F5|t
public final static int MERGE = 7; |Hg )!5EJ
public final static int IMPROVED_MERGE = 8; r/=v;4.W
public final static int HEAP = 9; &'V_80vA
i+T#z
public static void sort(int[] data) { ~PaD _W#xP
sort(data, IMPROVED_QUICK); a`(6hL3IT
} I9N?zmH
private static String[] name={ UK+;/Mtg
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]]@jvU_?kS
}; cv;&ff2%?
h>= e<H?f
private static Sort[] impl=new Sort[]{ 4XK*sR0-`
new InsertSort(), CJg &
new BubbleSort(), O_0|Q@
new SelectionSort(), dgpo4'c}
new ShellSort(), E+V^5Z:u
new QuickSort(), /,$;xt-J35
new ImprovedQuickSort(), m8$6FN
new MergeSort(), >x@]wsj
new ImprovedMergeSort(), _z\oDd`'
new HeapSort() 1i#uKKwE
}; hXM8`iFW5
cyA|6Ltg%
public static String toString(int algorithm){ JV(eHuw
return name[algorithm-1]; 4>>{}c!nf
} v^y3r
PXm{GLXRS;
public static void sort(int[] data, int algorithm) { ]B=B@UO@.
impl[algorithm-1].sort(data); 67%eAS
} lxj_(Uo
1qbd6D|t
public static interface Sort { ,)'!E^n
public void sort(int[] data); LgRx\*[C*
} '?t]iRCeI7
mfFC@~|g
public static void swap(int[] data, int i, int j) { p.TR1BHw
int temp = data; [Ua4{3#
data = data[j]; " jn@S-
data[j] = temp; vmJ1-<G4*
} SPOg'
} ^tsIgK^9H