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。 #rGCv~0*l
插入排序: W5Pur
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package org.rut.util.algorithm.support; O|=?!|`o
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import org.rut.util.algorithm.SortUtil; ~uZ9%UB_m
/** XP% _|Q2X
* @author treeroot o&@ y^<UQ
* @since 2006-2-2 ;^0ok'P\~9
* @version 1.0 +$(y2F7|u-
*/ -X7x~x-
public class InsertSort implements SortUtil.Sort{ }wvR s5;o
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/* (non-Javadoc) L/WRVc6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0]'
2i
*/ ps,Kj3^T<
public void sort(int[] data) { k{F6WQ7
int temp; <b_K*]Z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -]u>kjiIT
} l$c/!V[3
} lV4TFt,
} #`%S[)RT
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} G,Eh8HboK
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冒泡排序: mdrqX<x'~
:PY8)39@K
package org.rut.util.algorithm.support; /`aPV"$M
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import org.rut.util.algorithm.SortUtil; 'w72i/
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/** upk_;ae
* @author treeroot Wrp+B[{r\
* @since 2006-2-2 `}sFT:1&
* @version 1.0 fiSX( 9
*/ tlvZy+Blv
public class BubbleSort implements SortUtil.Sort{ =+DhLH}8
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/* (non-Javadoc) pMViq0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4%_c9nat
*/ zlQBBm;fE
public void sort(int[] data) { ><S2o%u~
int temp; c>/7E-T
for(int i=0;i for(int j=data.length-1;j>i;j--){ &1yErGXC
if(data[j] SortUtil.swap(data,j,j-1); ax;<idC}
} !~'D;Jh
} N z=P1&G'
} Oz]$zRu/0
} LqJV
v6uRzFw
} gPd,
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选择排序: w}$;2g0=a<
c0&!S-4M
package org.rut.util.algorithm.support; N;!!*3a9=
wCv9VvF`
import org.rut.util.algorithm.SortUtil; bi@'m?XwJ
lm&^`Bn)
/** /FPO'} 6i
* @author treeroot $1zWQJd[-
* @since 2006-2-2 3N2d@R
* @version 1.0 M80O;0N%A
*/ mO]dP;,
public class SelectionSort implements SortUtil.Sort { {o*$|4q4
^4\0,>
/* J#3[,~
* (non-Javadoc) 2*
TIr
* .Xe_Gp"x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w6Mv%ZO_
*/ D97 vfC
public void sort(int[] data) { f;,*P,K
int temp; 4,Uqcw?!F'
for (int i = 0; i < data.length; i++) { r5(efTgAd+
int lowIndex = i; seP h%Sa_
for (int j = data.length - 1; j > i; j--) { %i?v)EW
if (data[j] < data[lowIndex]) { H%Lln#
lowIndex = j; }rs>B,=*k
} DeT$4c*:[
} UYW'pV
SortUtil.swap(data,i,lowIndex); }:J-o
} cb{"1z
} *1_Ef).
@*=5a(#
} (#z6w#CU(
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Shell排序: 4)'U!jSb
n)35-?R/M
package org.rut.util.algorithm.support; 3r,Kt&2$
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import org.rut.util.algorithm.SortUtil; WoNY8
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/** `(I$_RSE")
* @author treeroot ~0?B
* @since 2006-2-2 AUIp
vd
* @version 1.0 C[#C/@
*/ pe3;pRh'
public class ShellSort implements SortUtil.Sort{ t&EY$'c
WA:r4V
/* (non-Javadoc) asCcBp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Y- WY,H
*/ '4Qsl~[Eh
public void sort(int[] data) { AR$SQ_4
for(int i=data.length/2;i>2;i/=2){ Z`ww[Tbv~
for(int j=0;j insertSort(data,j,i); "J+4
} x#R6Ez7
} ?0+g.,9
insertSort(data,0,1); e:C4f
} nf1 `)tXG
{[L('MH2|
/** \ a(ce?C
* @param data B_b5&M@
* @param j [8[<4~{
* @param i Y#=MN~##t
*/ T5.^
w
private void insertSort(int[] data, int start, int inc) { m&'!^{av
int temp; &"hEKIqL
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jcBZ#|B7;
} n5IQKYrg
} /m 7~-~$V
} Z{yH:{Vk
0\@oqw]6hv
} ijzwct#.
~#}T|
快速排序: b`=g#B|
6qT-
package org.rut.util.algorithm.support; rK:cUW0]X
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import org.rut.util.algorithm.SortUtil; pv-c>8Wb6
DL!%Np?`
/** 2' ^7G@%
* @author treeroot K,%CE
].
* @since 2006-2-2 ={N1j<%fh
* @version 1.0 .V3e>8gw3
*/ W}MN-0
public class QuickSort implements SortUtil.Sort{ ?A*!rW:l;
G'(rjH>q
/* (non-Javadoc) ,wBfGpVb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?#z<<FR
*/ ._`rh
public void sort(int[] data) { &oy')\H
quickSort(data,0,data.length-1); W7!iYxO
} w1aoEo "S
private void quickSort(int[] data,int i,int j){ ylQj2B,CB
int pivotIndex=(i+j)/2; SO[ u4b_"h
file://swap /!MKijI
SortUtil.swap(data,pivotIndex,j); &;L=f;
^w<aS
w
int k=partition(data,i-1,j,data[j]); V'MY+#
SortUtil.swap(data,k,j); yBIX<P)vE'
if((k-i)>1) quickSort(data,i,k-1); yTZo4c"
if((j-k)>1) quickSort(data,k+1,j); 9|v%bO
}^p<Y5{b
} m]8*k=v
/** ACZK]~Y'N*
* @param data VY+P c/b
* @param i yO!M$aOn/
* @param j J|%bRLX@>
* @return '\xE56v)F
*/ `.3@Ki~$#
private int partition(int[] data, int l, int r,int pivot) {
/7:+.#Ag`
do{ fmc\Li
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5s`r&2 w
SortUtil.swap(data,l,r); )7o?}"I
} p:W]
while(l SortUtil.swap(data,l,r); .jk
A'i@
return l; ;e/F( J
} &);P|v`8
kV4Oq.E
} [A"=!e$<
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改进后的快速排序: 5r~jo7
`8RKpZv&
package org.rut.util.algorithm.support; P*~
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import org.rut.util.algorithm.SortUtil; @DY"~ccH
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/** f86Z #%
* @author treeroot >][D"
* @since 2006-2-2 0< vJ*z|_
* @version 1.0 !Hl] &
*/ l!&ik9m
public class ImprovedQuickSort implements SortUtil.Sort { 9!W$S[ABRB
+jF2{"
private static int MAX_STACK_SIZE=4096; q#8yU\J|,
private static int THRESHOLD=10; Ro"'f7(v.
/* (non-Javadoc) PoPR34]^J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jlU6keZh`
*/ HG?+b
public void sort(int[] data) { Fs%`W4/
int[] stack=new int[MAX_STACK_SIZE]; .SER,],P
ljOY;WV3
int top=-1; "`4ky]
int pivot; mTxqcQc:7
int pivotIndex,l,r; N!3Tg564j
z8JW iRn
stack[++top]=0; 2b^Fz0
w4
stack[++top]=data.length-1; rqqd} kA
*qk7e[IP
while(top>0){ liH#=C8l*%
int j=stack[top--]; S)j(%g
int i=stack[top--]; :-JryiI
/W BmR R
pivotIndex=(i+j)/2; n-l_PhPQ`
pivot=data[pivotIndex]; CW?Z\
ftR& 5!Wm
SortUtil.swap(data,pivotIndex,j); 83t/\x,Q
c3g`k"3*`
file://partition Abt<23$h
l=i-1; %'2.9dB
r=j; 7H< IO`
do{ Q!V:=d
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S_Wq`I@b
SortUtil.swap(data,l,r); "V26\
} s_VcC_A
while(l SortUtil.swap(data,l,r); 9*ZlNZ
SortUtil.swap(data,l,j); sg2% BkTI
E1OrL.A6
if((l-i)>THRESHOLD){ }P.Z}n;Uj
stack[++top]=i; ;<m`mb4x[
stack[++top]=l-1; /r"<:+
} Hcu!bOQ
if((j-l)>THRESHOLD){ D_czUM
stack[++top]=l+1; \WE&5
9G
stack[++top]=j; M.- {->
} ?dCwo;~
4d PTrBQ?
} d9;&Y?fp
file://new InsertSort().sort(data); x0(bM g>7
insertSort(data); 2(@2z[eKr
} A?!RF7v
/** 3,{eH6,O7M
* @param data ,S=[#
*/ rMbq_5}
private void insertSort(int[] data) { 0r1GGEW`s
int temp; $">j~! '
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nf 8V:y4
} k/wD@H N
} qfE0J;e
} 6Uk+a=Ar
7`;sX?R
} J#F5by%8
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归并排序: YxJQ^D`
g}D)MlXRq
package org.rut.util.algorithm.support; nco.j:
NOXP}M
import org.rut.util.algorithm.SortUtil; xS/W}-dPv
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/** '%[ Y
* @author treeroot goIvm:?
* @since 2006-2-2 ~. vridH
* @version 1.0 {&IB[Y6
*/ ;98b SR/
public class MergeSort implements SortUtil.Sort{ o&E8<e
0HoHu*+FX
/* (non-Javadoc) aM;SE9/U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y_:jc{?
*/ |di(hY|
public void sort(int[] data) { S=!WFKcJR
int[] temp=new int[data.length]; <7\j\`
mergeSort(data,temp,0,data.length-1); .k]`z>uv
} (is' ,4^b
lTMY|{9
private void mergeSort(int[] data,int[] temp,int l,int r){ s"`~Xnf
int mid=(l+r)/2; v7
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if(l==r) return ; nXLz<wE
mergeSort(data,temp,l,mid); j}ob7O&U'w
mergeSort(data,temp,mid+1,r); Mu[lk=jC
for(int i=l;i<=r;i++){ #:gl+
temp=data; [8sYE h
} fc*>ky.v
int i1=l; 1 #,4P1"
int i2=mid+1; rx gSQ+G_
for(int cur=l;cur<=r;cur++){ $lf/Mg_H
if(i1==mid+1) t2(X
data[cur]=temp[i2++]; Zpkd8@g@
else if(i2>r) =eU=\td^
data[cur]=temp[i1++]; vY m:V:7Y2
else if(temp[i1] data[cur]=temp[i1++]; "@eGgQ
else F%|P#CaB
data[cur]=temp[i2++]; W-s 6+DY
} N<rq}^qo
} h8`On/Ur_8
M=liG+d
} K'Ywv@
*HR
pbe2
改进后的归并排序: ?K[Y"*y2
j9>[^t3U
package org.rut.util.algorithm.support; Unb2D4&'
z1Ieva]
import org.rut.util.algorithm.SortUtil; <!Cjq,Sk7
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/** Ra|P5
* @author treeroot l!x+K&
* @since 2006-2-2 _HHvL=
* @version 1.0 #kM|!U=
*/ 6T$=(I <4
public class ImprovedMergeSort implements SortUtil.Sort { ,yltt+e
AyO%,6p[
private static final int THRESHOLD = 10; f-|?He4O]
(NLw#)?
/* D;0>-
* (non-Javadoc) {O2=K#J
* @\ y{q;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O]PM L`
*/ uMw6b=/U
public void sort(int[] data) { Q&]|W
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int[] temp=new int[data.length]; 47Z3nl?
mergeSort(data,temp,0,data.length-1); (2#Xa,pb
} 'M~`IN`
D5c
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private void mergeSort(int[] data, int[] temp, int l, int r) { u @Ze@N%
int i, j, k; S=r0tao,!v
int mid = (l + r) / 2; TxPFl7,r
if (l == r) A,_O=hA2I
return; ; R+>}6
if ((mid - l) >= THRESHOLD) D ;> 7y}\
mergeSort(data, temp, l, mid); x;7l>uR
else Qf( A
insertSort(data, l, mid - l + 1); T5u71C_wmt
if ((r - mid) > THRESHOLD) 1- s(v)cxh
mergeSort(data, temp, mid + 1, r); ^5E9p@d"J
else $~b6H]"9
insertSort(data, mid + 1, r - mid); i`gM> q&
<4Gy~?
for (i = l; i <= mid; i++) { Nf )YG!
temp = data; v=@y7P1
} r5~W/eE
for (j = 1; j <= r - mid; j++) { @bA5uY!
temp[r - j + 1] = data[j + mid]; $@'BB=i
} X3}eq|r9
int a = temp[l]; cOV9g)7^O
int b = temp[r]; M)oKtiav*
for (i = l, j = r, k = l; k <= r; k++) { 'd$RNqe
if (a < b) { h_(M#gG
data[k] = temp[i++]; Wz'!stcp
a = temp; We{@0K/O
} else { MMFg{8
data[k] = temp[j--]; G*N[t w
b = temp[j]; `Qo37B2
} t\ oud{Cv
} |)!f".`
} z+yq%O
cZBXH*-M!
/** kAEq +{h
* @param data 33DP?nI}
* @param l 5=C?,1F$A
* @param i !Sn|!:N4
*/ ?{ExBZNa
private void insertSort(int[] data, int start, int len) { CO`)XB6W
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); )7*'r@
} cK1^jH<|
} $~6MR_Yq
} 6HK1?
} )=Z;H"_
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堆排序: 32 i6j
5\pS8<RJ;
package org.rut.util.algorithm.support; Xeq9Vs zg
U}jGr=tu
import org.rut.util.algorithm.SortUtil; R0INpF';
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/** |`:cB
* @author treeroot 62HA[cr&)
* @since 2006-2-2 06]3+s{{
* @version 1.0 E'aOHSAg
*/ X\Bl?
F
public class HeapSort implements SortUtil.Sort{ q2E{o)9
3cghg._
/* (non-Javadoc) fc3 nQp7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1k6asz^T
*/ OY{fxBb
public void sort(int[] data) { /.0K#J:
MaxHeap h=new MaxHeap(); xJ$uoy3+
h.init(data); D@La-K*5
for(int i=0;i h.remove(); N]
sbI)Z@
System.arraycopy(h.queue,1,data,0,data.length); &AJ bx
} h,Hr0^?
:o!Kz`J
private static class MaxHeap{ X0
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/#Pm'i>B
void init(int[] data){ "?zWCH
this.queue=new int[data.length+1]; zj r($?
for(int i=0;i queue[++size]=data; eV*QUjS~
fixUp(size); rtS cQ
} 67rY+u%
} &b#d4p6&l
U6/7EOW,
private int size=0; Jt5V{9:('
<=n;5hv:
private int[] queue; bpBn3f`?*
Z (6.e8fK
public int get() { tAN!LI+w
return queue[1]; c]Epg)E
} f DXK<v)
#`3Q4
public void remove() { ^}~Q(ji7
SortUtil.swap(queue,1,size--); hOB<6Tm[
fixDown(1); n'mrLZw
} Ij(<(y{?Q1
file://fixdown hhPQ.{]>
private void fixDown(int k) { G{: B'08
int j; c)#7T<>*'
while ((j = k << 1) <= size) { l!:bNMd
if (j < size %26amp;%26amp; queue[j] j++; ~}b0zL
if (queue[k]>queue[j]) file://不用交换 G06;x
break; j:cu;6|
SortUtil.swap(queue,j,k); t/t6o&
k = j; ;t +p2i
} *}C%z(
} @2"3RmYLo
private void fixUp(int k) { 5Yv*f:
while (k > 1) { D
1.59mHsD
int j = k >> 1; Nmx\qJUR(
if (queue[j]>queue[k]) `
1+*-g^r
break; (m2%7f.I
SortUtil.swap(queue,j,k); 1SjVj9{:
k = j; q,ie)`
} <2]h$53y!
} o`n8Fk}i
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} 7kV$O(4
oA5Qk3b:
} 5b rM..
Kc[^Pu
SortUtil: OF<:BaRs/
d"n>Q Tn\
package org.rut.util.algorithm; PV,Z@qm@^
PFpFqJ)Cs"
import org.rut.util.algorithm.support.BubbleSort; dsw^$R}
import org.rut.util.algorithm.support.HeapSort; ?M'CTz}<\
import org.rut.util.algorithm.support.ImprovedMergeSort; |[n\'Xy;{
import org.rut.util.algorithm.support.ImprovedQuickSort; --y,ky#
import org.rut.util.algorithm.support.InsertSort; Pa{DB?P
import org.rut.util.algorithm.support.MergeSort; JYNnzgd
import org.rut.util.algorithm.support.QuickSort; Y&b Yaq
import org.rut.util.algorithm.support.SelectionSort; !PoyM[Z"f
import org.rut.util.algorithm.support.ShellSort; ^
q ba<#e
iWeUsS%zpV
/** 5)f 'wVe
* @author treeroot LNJKf6:
* @since 2006-2-2 UZt3Ua&J
* @version 1.0 &c-V
QP(
*/ vVtkB$]L
public class SortUtil { WrwbLl E
public final static int INSERT = 1; mIf)=RW
public final static int BUBBLE = 2; BsXF'x<U*
public final static int SELECTION = 3; 4'D^>z!c
public final static int SHELL = 4; c),UO^EqV
public final static int QUICK = 5; pRjEuOc
public final static int IMPROVED_QUICK = 6; ;s,1/ kA
public final static int MERGE = 7; Fb<'L5}i
public final static int IMPROVED_MERGE = 8; 0(c,J$I]Z!
public final static int HEAP = 9; &kdW(;`
S".|j$
public static void sort(int[] data) { <P1nfH
sort(data, IMPROVED_QUICK); R5b,/>^'A
} pqs!kSJV
private static String[] name={ 4?@5JpC9VA
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" x3'ANw6E
}; 2Ax(q&`9
dKPXs-5
private static Sort[] impl=new Sort[]{ "8a
V~]~Dj
new InsertSort(), R{brf6,
new BubbleSort(), ]z7pa^
new SelectionSort(), 0o 7o;eN
new ShellSort(), ZWyf.VJ
new QuickSort(), ]gHrqi%
new ImprovedQuickSort(), dj084q7
new MergeSort(), H)TKk%`7
new ImprovedMergeSort(), "=]'"'B:
new HeapSort() 0KExB{ K
}; )]Zdaw)X
w@WtW8
p^
public static String toString(int algorithm){ w`boQ_Ir
return name[algorithm-1]; Y_$!XIJ4
} lz0dt<8eP
8B6(SQp%
public static void sort(int[] data, int algorithm) { U{EcV%C2
impl[algorithm-1].sort(data); -"Kjn`8
} g NE"z
uUaDesz~=
public static interface Sort { ax _v+v %
public void sort(int[] data); dn~k_J=p
} W"/,<xHuh
#lFsgb
public static void swap(int[] data, int i, int j) {
1^hG}#6_
int temp = data; ~]%re9jGW
data = data[j]; rr1,Ijh{D
data[j] = temp; F'<XB~&o
} 7zQGuGo(
} l66 QgPA