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。 /:ju/~R}
插入排序: hH]oJ}H \
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package org.rut.util.algorithm.support; Fgw$;W
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import org.rut.util.algorithm.SortUtil; q-r5z GI
/** =6d'/D#J
* @author treeroot Zfc{}ius
* @since 2006-2-2 T?KM}<$(O
* @version 1.0 },%,v2}
*/ V( =3K"j
public class InsertSort implements SortUtil.Sort{ R,+"^:}
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/* (non-Javadoc) xzb{g,c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T!1Np'12zF
*/
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public void sort(int[] data) { r"W<1Hu
int temp; )&[Zw{6P
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wpf
} `,s0^?_
} Mi<}q@]e
} V;(Rg=5
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} 9Idgib&
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冒泡排序: hY/i)T{
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package org.rut.util.algorithm.support; g+QNIM>
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import org.rut.util.algorithm.SortUtil; fiQ/ &]|5
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/** &`}ACTY'P
* @author treeroot /rnP/X)T
* @since 2006-2-2 R_duPaWc@
* @version 1.0 fO}Y$y\q
*/ uWkuw5;
public class BubbleSort implements SortUtil.Sort{ ]//Dd/L6
DG/<#SCF
/* (non-Javadoc) t<yOTVah
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~-BIUZ;
*/ zJTSg
public void sort(int[] data) { `r+`vJ$
int temp; Mo&Po9
for(int i=0;i for(int j=data.length-1;j>i;j--){ eXCH*vZY
if(data[j] SortUtil.swap(data,j,j-1); V&>mD"~MP
} [p96H)8YU
} (@cZmU,
} Ew2ksZ>B]&
} dUP8[y
'+iqbcUd,
} |\/V1
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选择排序: j6&7tK,
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ATQ
package org.rut.util.algorithm.support; +$D~?sk
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import org.rut.util.algorithm.SortUtil; fMIKA72>{
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/** [ FNA:
* @author treeroot 6Ej@;]^^-
* @since 2006-2-2 y0cB@pWp
* @version 1.0 >@StKj
*/ n##d!d|g
public class SelectionSort implements SortUtil.Sort { \bumB<w(]
/@f3|L<1@V
/* ^6Y:9+
* (non-Javadoc) pax;#*QcQ
* roE*8:Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +)-`$N
*/ [9xUMX^}
public void sort(int[] data) { NRZ>03w
int temp; "ju0S &
for (int i = 0; i < data.length; i++) { 2?nhkast#=
int lowIndex = i; Pdw[#X<[`
for (int j = data.length - 1; j > i; j--) { 06~HVv
if (data[j] < data[lowIndex]) { J;cTEB
lowIndex = j; :{KoZd
} j?'It`s
} VJ$UpqVm
SortUtil.swap(data,i,lowIndex); rg{|/ ;imT
} (
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} \t
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} "1Oe
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Shell排序: Wf>scl`s
and)>$)|
package org.rut.util.algorithm.support; sZ9VXnz24
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import org.rut.util.algorithm.SortUtil; GV T[)jS
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/** { |[n>k
* @author treeroot V,qc[*_3
* @since 2006-2-2 O$,MdhyXC
* @version 1.0 >|@i8?|E
*/ ~i y]X:U
public class ShellSort implements SortUtil.Sort{ ?#0|A?U
W6 U**ir.
/* (non-Javadoc) [:(^n0%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _M;M-hk/
*/ Uc?#E $X
public void sort(int[] data) { oWo/QNw9
for(int i=data.length/2;i>2;i/=2){ &KS*rHgt?
for(int j=0;j insertSort(data,j,i); !+# pGSk
} J"Z=`I)KON
} p 3*y8g-
insertSort(data,0,1); EFNi# D8s
} I?_YL*
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/** ^N\$oV$
* @param data >MeM
* @param j CFU'-
#b
* @param i wjeuZNYf
*/ swh8-_[c/
private void insertSort(int[] data, int start, int inc) { efu'PfZ`&
int temp; ?]]d
s]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C>:'@o
Z
} Btgxzf
} y:R!E *.L'
} qXw^y
U$,W/G}m
} =
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快速排序: GZwz4=`
muJR~4
package org.rut.util.algorithm.support; }pMd/|A,
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import org.rut.util.algorithm.SortUtil; k:qS'
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/** 5SNa~
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* @author treeroot 4,]z
* @since 2006-2-2 Ey#7L
M)
* @version 1.0 QU;bDNq,c
*/ w4fz!l]
public class QuickSort implements SortUtil.Sort{ f~0CpB*X
(/a#1Pd&
/* (non-Javadoc) 0Kytg\p}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nR(v~_y[V
*/ Bgvv6(i
public void sort(int[] data) { o<8('j
quickSort(data,0,data.length-1); {)?:d6"
} Z.l4<
private void quickSort(int[] data,int i,int j){ S<Os\/*
int pivotIndex=(i+j)/2; w$##GM=Tq
file://swap A 6IrA/b
SortUtil.swap(data,pivotIndex,j); bQlv b
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int k=partition(data,i-1,j,data[j]); /L yoTBG
SortUtil.swap(data,k,j); BtA_1RO
if((k-i)>1) quickSort(data,i,k-1); Rl/5eE8
if((j-k)>1) quickSort(data,k+1,j); 5w+KIHhN|
r&y0`M
} J{!U;r!6
/** K8bKTG \
* @param data =f/CBYNw@V
* @param i 0;Oe&Y
* @param j yCvP-?2
* @return ?l9j]
*/ j"F?^0aR,Q
private int partition(int[] data, int l, int r,int pivot) { h4#y'E!,Z
do{ q)j_QbW)
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); TKe\Bi
SortUtil.swap(data,l,r); B{ A b#
} :*} -,{uX
while(l SortUtil.swap(data,l,r); 'EHtA9M
return l; YWFq&II|Z
} uo8[,'
teKx^ 'c'
} @=sM')f&
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改进后的快速排序: 'L@kZ
kz\Ss|jl
package org.rut.util.algorithm.support; abD@0zr
48IrC_0j
import org.rut.util.algorithm.SortUtil; @xXVJWEU:
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/** $*Kr4vh
* @author treeroot 6Hp+?mmh
* @since 2006-2-2 uCr :+"C
* @version 1.0 GoLK
95"]
*/ u*T(n s
l
public class ImprovedQuickSort implements SortUtil.Sort { \$4 [qG=
GEK7q<
private static int MAX_STACK_SIZE=4096; fDwK5?
private static int THRESHOLD=10; @y'0_Y0-B
/* (non-Javadoc) /go|r '
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vel}lQD
*/ F8S>Ld
public void sort(int[] data) { BsU}HuQZQ
int[] stack=new int[MAX_STACK_SIZE]; #;yxn.</
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int top=-1;
l*?_ @
int pivot; 0|Xz-Y
int pivotIndex,l,r; =C2KHNc
o! l Ykud
stack[++top]=0; 9Pb6Z}
stack[++top]=data.length-1; Cz)&R^
6w=`0r3hy
while(top>0){ kO5lLqE
int j=stack[top--]; cNbUr
int i=stack[top--]; a%A!DzS
?-zuy US
pivotIndex=(i+j)/2; &+n9T?+b
pivot=data[pivotIndex]; P)kJ[Zv>f
!
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SortUtil.swap(data,pivotIndex,j); j^7A}fz
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file://partition oOLey!uZw
l=i-1; =ecLzk"+F
r=j; |r*)U(c`
do{ ae2Q^yLA
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); lYTQg~aPm
SortUtil.swap(data,l,r); d[>HxPwo
} [~u!*W
while(l SortUtil.swap(data,l,r); 0,nz*UDk
SortUtil.swap(data,l,j); RC/45:hZZ
`%
QvCAR
if((l-i)>THRESHOLD){ -72EXO=|
stack[++top]=i; nTv}/M&
stack[++top]=l-1; vQ
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} PcBD;[cn
if((j-l)>THRESHOLD){ 5f{P% x(
stack[++top]=l+1; :\vs kk),
stack[++top]=j; |{&M#qXe
} )S
7+y6f&*
+SR{FF
} S3:AitGJ
file://new InsertSort().sort(data); zs~Tu
insertSort(data); lH;V9D^
} A#6zINK#B
/** LQHL4jRXU
* @param data {O9(<g
*/ 8Z0x*Ssk
private void insertSort(int[] data) { @zC6`
int temp; d\ 8v
VZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W&=OtN
U!
} UrHndnqM
} +ID\u
<?
} [lg!*
vjq2(I)u
} )Xh}N
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归并排序: -?-XO<I
h7E~I
J
package org.rut.util.algorithm.support; g"Y_!)X
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import org.rut.util.algorithm.SortUtil; ]'`E
m/1FVC@*
/** b?l>vUgAg
* @author treeroot GPGE7X'
* @since 2006-2-2 0muC4
* @version 1.0 B
ytx.[zbX
*/ t&xoi7!$
public class MergeSort implements SortUtil.Sort{ 8 ECX[fw
X3\PVsH$K
/* (non-Javadoc) !+Xul_XG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cf88Fd6l/
*/ Oj;*Gi9E
public void sort(int[] data) { {YgU23;q
int[] temp=new int[data.length]; FDQ=$w}'>
mergeSort(data,temp,0,data.length-1); U\p`YZ
} MzD1sWmK
a(|6)w-
private void mergeSort(int[] data,int[] temp,int l,int r){ %(1OjfZc
int mid=(l+r)/2; ~<?Zj
if(l==r) return ; TIKkS*$
mergeSort(data,temp,l,mid); *3H=t$1G}
mergeSort(data,temp,mid+1,r); _Xt/U>N
for(int i=l;i<=r;i++){ Y>8Qj+d
temp=data; V9,<>
} cry1gnWG
int i1=l; dMH_:jb
int i2=mid+1; GLn=*Dh#
for(int cur=l;cur<=r;cur++){ Tb$))O}
if(i1==mid+1) 3)y1q>CQf
data[cur]=temp[i2++]; 9h amxi
else if(i2>r) q1T)H2S
data[cur]=temp[i1++]; ->rqr#
else if(temp[i1] data[cur]=temp[i1++]; {5~h
else F(yR\)!C
data[cur]=temp[i2++]; 68XJ`/d
} c|k_[8L
} Cgx:6TRS
k1<^Ept
} `Pvi+:6\Y
8f9wUPr
改进后的归并排序: Hw o _;fV
LUbj^iQ9
package org.rut.util.algorithm.support; DjM*U52Yfj
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import org.rut.util.algorithm.SortUtil; NX&dJ
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/** Jy)=TJ!y
* @author treeroot w'K7$F51
* @since 2006-2-2 i%-yR DIX
* @version 1.0 Q>, &@
*/ z2iMpZ
public class ImprovedMergeSort implements SortUtil.Sort { (oGYnN,2
}PBme'kP
private static final int THRESHOLD = 10; ENZym
c!ZZMCs
/* m$p}cok#+S
* (non-Javadoc) rLsY_7!
* E`o_R=%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /_0B5,6R
*/ "V' r}>
public void sort(int[] data) { "E\vdhk
int[] temp=new int[data.length]; ,~Mf2Y#m0p
mergeSort(data,temp,0,data.length-1); ^%$IdDx
} 9;+&}:IVS
\>6*U r
private void mergeSort(int[] data, int[] temp, int l, int r) { Sb[>R(0:
int i, j, k; k24I1DlR8
int mid = (l + r) / 2; \J+a7N8m,
if (l == r) !|Q&4NS
return; ,{PN6B
if ((mid - l) >= THRESHOLD) f'oTN!5WF
mergeSort(data, temp, l, mid); g{V(WyT@
else wH ,PA:
insertSort(data, l, mid - l + 1); Pvc)-A
if ((r - mid) > THRESHOLD) klUV&O+=%
mergeSort(data, temp, mid + 1, r); ^
8 }P_
else K1 "HJsj
insertSort(data, mid + 1, r - mid); yMN JHiE/
TRi'l #m4
for (i = l; i <= mid; i++) { ,Vi_~b
temp = data; nK;d\DO
} y||
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for (j = 1; j <= r - mid; j++) { 9i\RdJv.
temp[r - j + 1] = data[j + mid]; 6\.g,>
} kH eD(Ea
int a = temp[l]; VZi1b0k1.
int b = temp[r]; p& _Z}Wv
for (i = l, j = r, k = l; k <= r; k++) { JTKS5r7?
if (a < b) { 05 6K) E
data[k] = temp[i++]; 5nx*D"
a = temp; epsRv&LfC
} else { KNeVSZT
data[k] = temp[j--]; h>`[p,o
b = temp[j]; H1k)ya x4_
} D,cD]tB2
} GJB+]b-
} g$uiwqNA%
QZVyU8j3
/** mfj{_fR3
* @param data @ym:@<D
* @param l =78y*`L
* @param i E:9RskI
*/ 0kUhz\"R:q
private void insertSort(int[] data, int start, int len) { D9g*+KM&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (f&V 7n
} &E]) sJ0
} fQ 9af)d
} )j8'6tk)Z
} ":eyf3M
&- p(3$jn7
堆排序: E/H9#
niS\0ZA
package org.rut.util.algorithm.support; :7(fBf5
iYLg[J"
import org.rut.util.algorithm.SortUtil; 4M"'B A<
SVa^:\"$[
/** QHv]7&^rlj
* @author treeroot ^h_rE
|c
* @since 2006-2-2 Lj /^cx
* @version 1.0 MTwzL<@$
*/ htYfIy{5w
public class HeapSort implements SortUtil.Sort{ z/j*zU
`
/*g0M2+OZo
/* (non-Javadoc) `V/kM0A5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x<t?Yc9
*/ 67/@J)z0%
public void sort(int[] data) { <1vogUDW
MaxHeap h=new MaxHeap(); BHpay
h.init(data); XyB_8(/E
for(int i=0;i h.remove(); iw.F8[})
System.arraycopy(h.queue,1,data,0,data.length); "U9e)a0v
} ~e|E5[-i
{U9{*e$=
private static class MaxHeap{ *=md!^x`
xz`0V}dPl
void init(int[] data){ =glG |
this.queue=new int[data.length+1]; \V~B+e
for(int i=0;i queue[++size]=data; v#d3W|
~
fixUp(size); fhk(<KZvJ
} oJV dFE
} zq5N@dF
6oWFj eZ0
private int size=0; |s#,^SJ0
t^bh2$J
private int[] queue; 2L<1]:I
,wr5DQ
public int get() { ZHRMW'Ne
return queue[1]; 3Q&@l49q
} z>W?\[E<2
WG3_(mM
public void remove() { [g==#[
SortUtil.swap(queue,1,size--); :EPe,v RT
fixDown(1); 7LaRFL.,kO
} M3eSj`c3
file://fixdown BD$Lf,_
private void fixDown(int k) { J^WX^".E
int j; dR s\e(H'
while ((j = k << 1) <= size) { k-4z2qB
if (j < size %26amp;%26amp; queue[j] j++; Yi-,Pb?
if (queue[k]>queue[j]) file://不用交换 {DVMs|5;^
break; 5/hgWG6.t
SortUtil.swap(queue,j,k); ga'G)d3oS
k = j; {#=o4~u%;H
} . Z`xNp
} }w=|"a|,
private void fixUp(int k) { a'q&[08
while (k > 1) { {h|kx/4{m
int j = k >> 1; CT\rx>[J.6
if (queue[j]>queue[k]) s4Jy96<
break; nr>Yj?la
SortUtil.swap(queue,j,k); 0#5&*
k = j; ZXj*Vu$_4
} -f'&JwE0=
} [:izej(\
v)vogtAQa
} (\'lV8}U
E.B6u, Te
} A'uubFRL2[
cr18`xU
SortUtil: IUWJi\,
PE_JO(e;Xm
package org.rut.util.algorithm; n-?zH:]GG{
B0g?!.#23
import org.rut.util.algorithm.support.BubbleSort; 2Z9ck|L>
import org.rut.util.algorithm.support.HeapSort; {iQ4jJ`n
import org.rut.util.algorithm.support.ImprovedMergeSort; ,7d#t4
import org.rut.util.algorithm.support.ImprovedQuickSort; 7OPRf9+o
import org.rut.util.algorithm.support.InsertSort; xyV7MW\?w
import org.rut.util.algorithm.support.MergeSort; xNJ*TA[+
import org.rut.util.algorithm.support.QuickSort; nh+h3"-d
import org.rut.util.algorithm.support.SelectionSort; @]]\r.DG
import org.rut.util.algorithm.support.ShellSort; A)#Fyde
eOb)uIF
/** #|V)>")
* @author treeroot U$=Z`^<
* @since 2006-2-2 fn5!Nr ,
* @version 1.0 SJ,];mC0
*/ i:&$I=
public class SortUtil { e=!sMWx6
public final static int INSERT = 1; 6/0bis
H
public final static int BUBBLE = 2; =FAIbM>u
public final static int SELECTION = 3; Yru,YA
public final static int SHELL = 4; 2`V0k.$?p
public final static int QUICK = 5; HbCcROl(
public final static int IMPROVED_QUICK = 6; $7O3+R/=
public final static int MERGE = 7; ~A(^<
public final static int IMPROVED_MERGE = 8; pCeCR
public final static int HEAP = 9; #]*d8
X4k|k>
public static void sort(int[] data) { +wGvYr
sort(data, IMPROVED_QUICK); ws;|fY
} -|:mRAe
private static String[] name={ Q}^qu6
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \Jwc[R&x
}; }+:X= @Z@
Q0XSQ Ol
private static Sort[] impl=new Sort[]{ xd`\Ai
new InsertSort(), 7<*g'6JG[
new BubbleSort(), |lIgvHgg
new SelectionSort(), NiVZ=wEp,
new ShellSort(), 5z.Y}
new QuickSort(), $GD
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new ImprovedQuickSort(), u`*1OqU
new MergeSort(), 0\1g-kc!v
new ImprovedMergeSort(), S""F58H n
new HeapSort() bhKe"#m|S
}; wEl/s P
B?d+^sz]
public static String toString(int algorithm){ ;Yt'$D*CP
return name[algorithm-1]; `@&WELFv{
} GCrsf
C)cuy7<
public static void sort(int[] data, int algorithm) { i2)$%M&
impl[algorithm-1].sort(data); +WCV"m
} L7yEgYB
F~GIfJU
public static interface Sort { Xk :_aJ
public void sort(int[] data); a!&<jM
} t&o&gb
aC3Qmo6?m
public static void swap(int[] data, int i, int j) { [ mo9?
int temp = data; #,SPV&
data = data[j]; Jn\>Sz(96
data[j] = temp; N8*QAekN
} m&--$sr
} )|&FBz;