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。 [V#"7O vl
插入排序: 3YY<2<
C:tA|<b|
package org.rut.util.algorithm.support; x,9fOA
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import org.rut.util.algorithm.SortUtil; j/zD`ydj
/** 3t(8uG<rL
* @author treeroot 0m5Q;|mH
* @since 2006-2-2 -25#Vh
* @version 1.0 d6lhA 7
*/ !g? ~<`
public class InsertSort implements SortUtil.Sort{ -Q@jL{Ue
]
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/* (non-Javadoc) //--r5Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {$iJYS\
*/ (xU+Y1*g"%
public void sort(int[] data) { {Y5h*BD>
int temp; my#qmI
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Isq3YY
} 9Ao0$|@b
} {GF>HHQb
} ^qpa[6D6x
mB(*)PwZ
} "X']_:F1a
Ow\9vf6H
冒泡排序: >l$vu-k)~4
%EPqJ(T
package org.rut.util.algorithm.support; bw*@0;
oH+UuP2a-J
import org.rut.util.algorithm.SortUtil; YQR*?/?a
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/** (4V1%0
* @author treeroot {d$S~
* @since 2006-2-2 <!,q:[ee5
* @version 1.0 ,8(%J3J
*/ !DnG)4#
public class BubbleSort implements SortUtil.Sort{ (.,E6H|zI
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)O@ ;
/* (non-Javadoc) ^_<>o[qE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @ ADY?
*/ u)P$xkf
public void sort(int[] data) { +DKrX
int temp; |Y<ca
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^F*)Jq
if(data[j] SortUtil.swap(data,j,j-1); F~d
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} sF;1)7]Pq
} +N[dYm
} bcpH|}[F)
} ?xf59mY7
yZ&By?.0
} yZ:|wxVY
w8%yX$<
选择排序: F *;
+-e
+Z XGT
package org.rut.util.algorithm.support; mxHNK4/
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import org.rut.util.algorithm.SortUtil; 6,G^iv6H
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/** {s8''+Q#(-
* @author treeroot hk ./G'E
* @since 2006-2-2 T
GMHo{]
* @version 1.0 *DkA$Eu3u
*/ ,WOF)
public class SelectionSort implements SortUtil.Sort { 9[N'HpQ3
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/* z>j%-3_1
* (non-Javadoc) KHr8\qLH
* 1jmhh!,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jTws0=F*
*/ |
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public void sort(int[] data) { RA[` Cp"
int temp; r"fu{4aX
for (int i = 0; i < data.length; i++) { va8:QHdU
int lowIndex = i; .WL507*"Ce
for (int j = data.length - 1; j > i; j--) { w& RpQcV
if (data[j] < data[lowIndex]) { mQ%kGqs
lowIndex = j; F__>`Dol
} mS~3 QV
} `M>{43dj
SortUtil.swap(data,i,lowIndex); H@IX$+;z
} n 2#uH
} cb%w,yXw
q){]fp.,@
} B_cn[?M
W&06~dI1!
Shell排序: _;01/V"q6
Q,\lS
package org.rut.util.algorithm.support; lRt8{GFy
4)j<(5
import org.rut.util.algorithm.SortUtil; kq%`9,XE
6}NvVolr
/** FA{I
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* @author treeroot uy\YJ.WMQ
* @since 2006-2-2 x6DH0*[.
* @version 1.0 s*9tWSd
*/ bT{P1nUu
public class ShellSort implements SortUtil.Sort{ /LSiDys
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/* (non-Javadoc) wuYo@DDU#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q/OraPAB
*/ cJ8*[H<NV
public void sort(int[] data) { h]EXD
for(int i=data.length/2;i>2;i/=2){ N[pk@M\vX
for(int j=0;j insertSort(data,j,i); tW=0AtZl]
} N=I5MQG
} i0AC.]4e"
insertSort(data,0,1); R&xD|w8UjM
} /v!H{Zw=c
&\p:VF.
/** q }z,C{Wq<
* @param data zx'`'t4~
* @param j iBUf1v
* @param i T[Gz
*/ 3b&W=1J
private void insertSort(int[] data, int start, int inc) { }= <!j5:
int temp; RTl7vzG
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /asyj="N7
} &H4UVI
} 0>e>G (4(8
} P;_dilG
}p- %~Y
} 5R ec}H
:m$%D]WY
快速排序: ^d=Z/d[
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package org.rut.util.algorithm.support; _^'k_a
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import org.rut.util.algorithm.SortUtil; >8AtT=}w
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/** 'xi..
* @author treeroot '6WDs]\
* @since 2006-2-2 Ck^= H
* @version 1.0 1$Hf`h2
*/ (u'/tNGS
public class QuickSort implements SortUtil.Sort{ wUV%NZB
LB{a&I LG
/* (non-Javadoc) U73`HDJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6nq.~f2`
*/ rRt<kTk!U
public void sort(int[] data) { =p7W^/c
quickSort(data,0,data.length-1); EEo+#
} J2cNwhZ
private void quickSort(int[] data,int i,int j){ $\K(EBi#G
int pivotIndex=(i+j)/2; /gdo~
file://swap $OhL
95}7
SortUtil.swap(data,pivotIndex,j); eD(a
+El}
T ]zjJwa
int k=partition(data,i-1,j,data[j]); '+QgZ>q"
SortUtil.swap(data,k,j); # xoFIH
if((k-i)>1) quickSort(data,i,k-1); /nmfp&@
if((j-k)>1) quickSort(data,k+1,j); mn4;$1~e>H
k m|wB4
} Qp?+_<{
/** O0l;Qi
* @param data ixH7oWH#
* @param i K*}j1A
* @param j "nefRz%j+
* @return ge?ymaU$a
*/ R 1 b`(
private int partition(int[] data, int l, int r,int pivot) { KWH
do{ Arv8P
P^'
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !'MD8
SortUtil.swap(data,l,r); nc{<v
} hWu)0t
while(l SortUtil.swap(data,l,r); 3gh^a;uC
return l; OlJj|?z$
} ]a%Kn]HI&2
N~kYT\$b#
} P3|<K-dFAK
+]zP $5_e
改进后的快速排序: CKur$$B
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package org.rut.util.algorithm.support; m{yON&y
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import org.rut.util.algorithm.SortUtil; qs b4@jt+
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/** j%h
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* @author treeroot .0ZvCv:>
* @since 2006-2-2 =>J#_Pprn
* @version 1.0 [P,nW/H
*/ {ULnQ6@
public class ImprovedQuickSort implements SortUtil.Sort { ]>,|v,i
=
1mV0AE538
private static int MAX_STACK_SIZE=4096; }>:X|4]
private static int THRESHOLD=10; TK>}$.c%+
/* (non-Javadoc) ;v'Y'!-J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OY#_0p)i
*/ z~5'p(|@f
public void sort(int[] data) { pk4&-iu9
int[] stack=new int[MAX_STACK_SIZE]; Jp#cFUa t
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N
int top=-1; `!8Z"xD
int pivot; mx4*zj
int pivotIndex,l,r; <i6M bCB
]>o2P cb;
stack[++top]=0; 3Cl9,Z"&6$
stack[++top]=data.length-1; Uf<vw3
8(;i~f:bCW
while(top>0){ 9 JtG&^*
int j=stack[top--]; OXB-.<
int i=stack[top--]; !/zj7z
!
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pivotIndex=(i+j)/2; hH/O2
pivot=data[pivotIndex]; g1|c?#fwo
hdL2`5RFF
SortUtil.swap(data,pivotIndex,j); MO/N*4U2
n}?G!ySg
file://partition 7A6sSfPUy
l=i-1; }b(e
r=j; -*2X YTe
do{ LNE[c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x TZ5q*Hqx
SortUtil.swap(data,l,r); uSJP"Lw
} pAuwSn#i
while(l SortUtil.swap(data,l,r); 5XHkRcESZ
SortUtil.swap(data,l,j); {LDb*'5Cy
h_L '_*
if((l-i)>THRESHOLD){ cFvx*n
stack[++top]=i; {[?|RC;\Y
stack[++top]=l-1; Biy 9jIWI
} bg}77Y'^
if((j-l)>THRESHOLD){ *% *^a\2
stack[++top]=l+1; R.T-Pt ene
stack[++top]=j; Qg!*=<b
} zY+Et.lg]^
3(&F.&C$$
} EYG E#C;
d
file://new InsertSort().sort(data); B_2>Yt"
insertSort(data); ZB&Uhi
} Rp*t"HSaAW
/** ^nF$<#a
* @param data PEIr-qs%D
*/ dDbC0} x/
private void insertSort(int[] data) { eb\`)MI/
int temp; uek3Y[n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G |^X:+
} |GQ$UB
} |lwN!KVQ,
} JrTBe73.]j
cx(F,?SbS
} 5qEdN
F`.7_D
归并排序: oZ[ w
55b |zf
package org.rut.util.algorithm.support; E |
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import org.rut.util.algorithm.SortUtil; L?+|%[
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/**
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* @author treeroot =_J<thp
* @since 2006-2-2 j//wh1
* @version 1.0 )du{ZWr
*/ p9WskYpm
public class MergeSort implements SortUtil.Sort{ vh8Kd' y
]#.&f]6l
/* (non-Javadoc) &X,)+b=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %iC63)(M
*/ y03a\K5[KQ
public void sort(int[] data) { b.*4RL
int[] temp=new int[data.length]; @ -d4kg
mergeSort(data,temp,0,data.length-1); \#,#_
} "Cj#bUw
i6 ?JX@I
private void mergeSort(int[] data,int[] temp,int l,int r){ guXpHF=
int mid=(l+r)/2; jgw'MpQm{
if(l==r) return ; 5yi q#
mergeSort(data,temp,l,mid); Sr 4 7u{n
mergeSort(data,temp,mid+1,r);
89=JC[c
for(int i=l;i<=r;i++){ '|N4fbZd
temp=data; IFofFXv_
} G3^]Wwu
int i1=l; /
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int i2=mid+1; u>6/_^iq
for(int cur=l;cur<=r;cur++){ F5[ITK]A4
if(i1==mid+1) ^>{;9lo<
data[cur]=temp[i2++]; VDjIs UUX
else if(i2>r) +/86w59
data[cur]=temp[i1++]; 1|w:xG^
else if(temp[i1] data[cur]=temp[i1++]; ?Hxgx
else q.[[c
data[cur]=temp[i2++]; A!Ct,%
} k]9> V@C
} *js$r+4
W?J[K;<
} S_VncTIO
-f|^}j?
改进后的归并排序: B2qq C-hw?
P\6T4s
package org.rut.util.algorithm.support; ^GaPpm
ND1%s &
import org.rut.util.algorithm.SortUtil; g4SYG)'R+
Yf)|ws?!
/** k:)u7A+
* @author treeroot ^-*Tn
* @since 2006-2-2 ixHZX<6zYT
* @version 1.0 GiO#1gA
*/ OrJlHMz
public class ImprovedMergeSort implements SortUtil.Sort { _m?(O /BTx
tF g'RV{
private static final int THRESHOLD = 10; B5H&DqWzr
1\{U<Oli
/* -JhjTA
* (non-Javadoc) =&:f+!1$
* B%:9P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YGV#.
*/ m&~Dj#%(w
public void sort(int[] data) { @mRrA#E#{
int[] temp=new int[data.length]; aa%&&
mergeSort(data,temp,0,data.length-1); *([)X2A@+
} JP,(4h*
(Cd{#j<
private void mergeSort(int[] data, int[] temp, int l, int r) { z "$d5XR
int i, j, k; !Fg4Au
int mid = (l + r) / 2; EQOP?>mWx!
if (l == r) p't:bR
return; 4FE@s0M,
if ((mid - l) >= THRESHOLD) >AX~c
jo
mergeSort(data, temp, l, mid); ;(0$~O$3u
else AD%D ,l
insertSort(data, l, mid - l + 1); Dzjt|U0ru9
if ((r - mid) > THRESHOLD) \j})Kul
mergeSort(data, temp, mid + 1, r); -@V"i~g<e
else FO>( QLlH
insertSort(data, mid + 1, r - mid); mS~ ]I$
UK_aqB
for (i = l; i <= mid; i++) { DcR}pQ(e
temp = data; .A!0.M|
} kxqc6
for (j = 1; j <= r - mid; j++) { r{2].31'
temp[r - j + 1] = data[j + mid]; ,ibPSN5Ca
} dJ%Rk#?;A
int a = temp[l]; +=~%S)9F
int b = temp[r]; oYh<k
for (i = l, j = r, k = l; k <= r; k++) { -S%q!%}u
if (a < b) { }wOpPN[4
data[k] = temp[i++]; fxoi<!|iGY
a = temp; 'uf\.F
} else { 'tu@`7*
data[k] = temp[j--]; !MJe+.
b = temp[j]; KA-/k@1&
} +5t
bK
} lHKf#|
} 6%\Q*r*N
p;u 1{
/** ImV]}M~_
* @param data <ql w+RVt
* @param l %t~SOkx
* @param i mYh5#E41J
*/ '-PMF~~S
private void insertSort(int[] data, int start, int len) { Vp]D
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "rx^M*"
} v"~Do+*+
} K4k~r!&OU
} M6jp1:ZH2q
} ![@T iM
45+%K@@x
堆排序: pFJQ7Jlx
! FR%QGn1
package org.rut.util.algorithm.support; 6mu<&m@
)W1(tEq59
import org.rut.util.algorithm.SortUtil; BU9J_rCIv
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/** :GQIlA8cF$
* @author treeroot hr[B^?6
* @since 2006-2-2 )W`SC mr]
* @version 1.0 ',JrY)
*/ HUJ|-)"dw
public class HeapSort implements SortUtil.Sort{ UK6xkra?#
{ eEC:[
/* (non-Javadoc) Oz&+{ c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +:> J Z$
*/ +%Lt". o
public void sort(int[] data) { `s`C{|wv
MaxHeap h=new MaxHeap(); /}w#Jk4pD
h.init(data); y7JZKtsFA
for(int i=0;i h.remove(); G`,u40a
System.arraycopy(h.queue,1,data,0,data.length); 3$c (M99r
} ok `]:gf
T0`"kjE
private static class MaxHeap{ hhpv\1h#
kG)2%
void init(int[] data){ wqlcLIJPR
this.queue=new int[data.length+1]; IX<r5!
for(int i=0;i queue[++size]=data; ~^I\crx,U%
fixUp(size); jow7t\wk
} OGJ=VQA
} Y5ogi)
v<;: 0
private int size=0; hojHbmm4
|e*Gz D
private int[] queue; OE'K5oIM
4E=0qbt8
public int get() { a-]hW=[
return queue[1]; K1T1@ j
} e(yQKwVD
60GFVF]'2
public void remove() { {~"7vkc+
SortUtil.swap(queue,1,size--); {r={#mO;p
fixDown(1); E@w[
} 'h-3V8m^e
file://fixdown J=UZ){c>:.
private void fixDown(int k) { d5DP^u
int j; $]@O/[
while ((j = k << 1) <= size) { x*.Ye5Jb
if (j < size %26amp;%26amp; queue[j] j++; Yd'H+r5b
if (queue[k]>queue[j]) file://不用交换 ajn-KG!A
break; }A{_L6qx
SortUtil.swap(queue,j,k); of9q"h
k = j; ~~PgF"v
} M@|w[ydQG
} J &!B|TS
private void fixUp(int k) { S|"Fgoj r
while (k > 1) { fNkuX-om
int j = k >> 1; C"6Amnj
if (queue[j]>queue[k]) L@w0N)P<!{
break; )`w=qCn1 Y
SortUtil.swap(queue,j,k); Zta$R,[9h
k = j; I[#U`9Dt
} 9Z&?R++?
} /ZHO>LNN|
||uZ bP@
} h4f~5- Y
Oqpp=7
} Bi]D{m9
~}BJ0P(VMc
SortUtil: _=ugxL #eB
UL+E,=
package org.rut.util.algorithm; Bwjg#1 E
$^t<9"t
import org.rut.util.algorithm.support.BubbleSort; y-'" >
import org.rut.util.algorithm.support.HeapSort; QwBXlO?
import org.rut.util.algorithm.support.ImprovedMergeSort; +p3 Z#KoC
import org.rut.util.algorithm.support.ImprovedQuickSort; )S^z+3p
import org.rut.util.algorithm.support.InsertSort; zK=dzoy
import org.rut.util.algorithm.support.MergeSort; ITONpg[f
import org.rut.util.algorithm.support.QuickSort; !g8*r"[UJ
import org.rut.util.algorithm.support.SelectionSort; huz86CO
import org.rut.util.algorithm.support.ShellSort; T?>E{1pS
PdT83vOCE
/** 5O&d3;p'
* @author treeroot [FGgkd}
* @since 2006-2-2 Y;} 2'"
* @version 1.0 yz?q(]
*/ @rF/]UJ
public class SortUtil { MEEAQd<*
public final static int INSERT = 1; RcQ>eZHl
public final static int BUBBLE = 2; E#8_hT]5
public final static int SELECTION = 3; gI)u}JX
public final static int SHELL = 4; + 3h`UF
public final static int QUICK = 5; "%VbI P
public final static int IMPROVED_QUICK = 6; V]rhVMA
public final static int MERGE = 7; <
kz[:n:
public final static int IMPROVED_MERGE = 8; jo)6
%w]
public final static int HEAP = 9; i3\~Qj;1
H)E^!eo
public static void sort(int[] data) { IV0[!D
sort(data, IMPROVED_QUICK); W2`.RF^
} 7,*%[#-HE
private static String[] name={ >V(zJ
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |Ab{H%
}; P.cO6+jGR
H'EY)s Hi
private static Sort[] impl=new Sort[]{ ZRnL_z~
new InsertSort(), pYt/378w
new BubbleSort(), QQFf5^
new SelectionSort(), 3[r";Wt#
new ShellSort(), Z'Q*L?E8M
new QuickSort(), %*kLEA*v
new ImprovedQuickSort(), "}@i+oS
new MergeSort(), Lj8)'[K"
new ImprovedMergeSort(), n+HsQ]z.
new HeapSort() EWA;L?g|A
}; J*j5#V];
=h|wwQE
public static String toString(int algorithm){ K#!X><B'
return name[algorithm-1]; DR@1z9 a
} JS!*2*Wr
nLj&Uf&
public static void sort(int[] data, int algorithm) { @u/H8\.l
impl[algorithm-1].sort(data); dCe X}Z
} e0 u,zg+m
]9*;;4Mg
public static interface Sort { `XW*kxpm
public void sort(int[] data); KXf<$\+zO
} tiYOMA
WS:5MI,OL
public static void swap(int[] data, int i, int j) { W`rMtzL5
int temp = data; *"cD.)]#2
data = data[j]; o>F*Itr{
data[j] = temp; OQScW2a&
} Q`A6(y/s?
} @*(4dt:V