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。 [NIaWI,>
插入排序: [cf!%3>53
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package org.rut.util.algorithm.support; i6D66 E
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import org.rut.util.algorithm.SortUtil; 4BAG GD2
/** +HNM$yp
* @author treeroot $/;;}|hqi
* @since 2006-2-2 XfH[:XG3
* @version 1.0 6.gk6
*/ dgM@|&9*m
public class InsertSort implements SortUtil.Sort{ *4|]=yPU
@t?uhT*Z=
/* (non-Javadoc) Eh&HN-&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H)l7:a
*/ YhNO{4D
public void sort(int[] data) { vmK`QPu2
int temp; YA%0{Tdxz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V'&`JZK6
} ww$Ec
} ^5BQ=
} ptEChoZ6
h1.<\GO
} Y|96K2BR
Z`Sbq{Kx
冒泡排序: L4-v'Z;
2io~pk>
package org.rut.util.algorithm.support; OtFGo8
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import org.rut.util.algorithm.SortUtil; ,$<="kJk
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/** c.eA]m q
* @author treeroot fjm(C#^-
* @since 2006-2-2 %?z8*G]M
* @version 1.0 }IGoPCV|
*/ VgyY7INx9
public class BubbleSort implements SortUtil.Sort{ <mX EX`?
v)J(@>CZ[
/* (non-Javadoc) V+&C_PyC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~V6wcXd
*/ |QB[f*y5
public void sort(int[] data) { .7|Iausv
int temp; \RDS~u\d
for(int i=0;i for(int j=data.length-1;j>i;j--){ C4^o=
6{
if(data[j] SortUtil.swap(data,j,j-1); 'WQ?%da
} - HiRXB
} #[.aj2
} | )M>;q
} o6T'U#7P
_?QVc0S!
} ZF~@a+o
9B<aYp)
选择排序: kx31g,cf]w
EwKFT
FL
package org.rut.util.algorithm.support; ni`uO<\U
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import org.rut.util.algorithm.SortUtil; >#~>!cv6D
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/** ^ ^T e
* @author treeroot @K=C`N_22
* @since 2006-2-2 GZWU=TC2{2
* @version 1.0 GW;O35
m
*/ #4BwYj(Sl
public class SelectionSort implements SortUtil.Sort { GLtd6; V
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/* iw\yVd^]:k
* (non-Javadoc) ^M6R l0
* I )wc&>Lc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,,HoD~]rd
*/ L| K8
public void sort(int[] data) { zW9/[Db
int temp; {DWL 5V#M
for (int i = 0; i < data.length; i++) { &UfP8GE9
int lowIndex = i; RBOg;EJ
for (int j = data.length - 1; j > i; j--) { ]wm<$+@
if (data[j] < data[lowIndex]) { ;nbV-<e
lowIndex = j; Jy?; <
} ?8]g&V
} B3g#)
SortUtil.swap(data,i,lowIndex); <e'/z3TbRW
} ~KP@wD~
} 1'4?}0Dok
+LwwI*;b
} [D_s`'tg
hh7unHt-
Shell排序: (bp4ly^
JBk >|q"
package org.rut.util.algorithm.support; oF L7dL
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import org.rut.util.algorithm.SortUtil; i#bcjH
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/** gJBw6'Z
* @author treeroot <\`qRz0/
* @since 2006-2-2 "el}9OitC
* @version 1.0 F_ -}GN%
*/ as3*49^9
public class ShellSort implements SortUtil.Sort{ fR>"d<;T
jG["#5<?
/* (non-Javadoc) Q4ZKgcC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8@,8j!$8G
*/ s((c@)M
public void sort(int[] data) { }?^]-`b
for(int i=data.length/2;i>2;i/=2){ u5N&W n{
for(int j=0;j insertSort(data,j,i); ]8f$&gw&A
} Dgc}T8R
} "6q@}sz!
insertSort(data,0,1); ;u;_\k<qK
} 7_ s7);
!xvAy3
/** W$xW9u8@+(
* @param data *aW:Z6N
* @param j +$$5Cv5#<&
* @param i &lnM
1W
*/ Ubm]V{7
private void insertSort(int[] data, int start, int inc) { k&lfxb9pd
int temp; ^C'{# p"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]FEDAGu
} Q8D#kAYw
} oy\U\#k
} {PKf]m
{uN-bl?o
} =z zmz7op
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快速排序: nxMZd=Y
o1R:1!"2
package org.rut.util.algorithm.support; c2Wp 8l
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import org.rut.util.algorithm.SortUtil; lk.Mc6)
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/** r;_*.|AH
* @author treeroot TeRH@oI
* @since 2006-2-2 mJZB@m u?
* @version 1.0 -QK- w>
*/ ~9Qd83`UH
public class QuickSort implements SortUtil.Sort{ 4s6,`-
hc*t Q2
/* (non-Javadoc) RQ;w$I\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Y M(NC
*/ 9Ed=`c
public void sort(int[] data) { L)c]i'WZ
quickSort(data,0,data.length-1); a66Ns7Rb
} I]a [Ngj
private void quickSort(int[] data,int i,int j){ f7/M _sx
int pivotIndex=(i+j)/2; OlP1Zd/l
file://swap q$PO.#
SortUtil.swap(data,pivotIndex,j); {F;"m&3Lt
^hcK&
int k=partition(data,i-1,j,data[j]); '^`iF,rg
SortUtil.swap(data,k,j); wZVLpF+7
if((k-i)>1) quickSort(data,i,k-1); XT?wCb41R
if((j-k)>1) quickSort(data,k+1,j);
Clb7=@f
Nq1YFI>W
} X?o6=)SC|
/** 7{\6EC}d[&
* @param data ~r_2V$sC2
* @param i $WXO1o(O
* @param j 8[;AFm ?,`
* @return 6O_l;A[=1
*/ rl,i,1t
private int partition(int[] data, int l, int r,int pivot) { 86);0EBX
do{ |
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3YG%YhevO
SortUtil.swap(data,l,r); $,B;\PX
} q07H{{h/B
while(l SortUtil.swap(data,l,r); i*r ag0Mw
return l; yKy
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} k"|Fu
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} qh+&Z x~
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改进后的快速排序: -A@/cS%p
Tgl >
package org.rut.util.algorithm.support; PS8^=
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import org.rut.util.algorithm.SortUtil; U>sEFzBup
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/** |{JI=$
* @author treeroot |w+
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* @since 2006-2-2 OZA^L;#>
* @version 1.0 V"B/4v>
*/ qeb} ~FL"o
public class ImprovedQuickSort implements SortUtil.Sort { C-\3,
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private static int MAX_STACK_SIZE=4096; SLRF\mh!L
private static int THRESHOLD=10; virt[5w
/* (non-Javadoc) (\'$$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zp5ZZcj_
*/ ZL:SJ,C
public void sort(int[] data) { 6AoKuT;
int[] stack=new int[MAX_STACK_SIZE]; IJVzF1vC
[] el4.J,
int top=-1; lF
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int pivot; ?C- ju8]|
int pivotIndex,l,r; m>RtKCtP
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stack[++top]=0; [b_qC'K[
stack[++top]=data.length-1; o+.ySSBl+
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while(top>0){ pXvys]@
int j=stack[top--]; \C>+ubF
int i=stack[top--]; Zl{9G?abCT
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pivotIndex=(i+j)/2; 2j#Dwa(lZQ
pivot=data[pivotIndex]; U#&+n-npO
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SortUtil.swap(data,pivotIndex,j); s4QCun~m
4H NaE{O4
file://partition B]vR=F}*
l=i-1;
*;xGH
r=j; 3@:O1i
do{ MkhD*\D
/
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )+DDIq
SortUtil.swap(data,l,r); -2(?O`tZ
} IMBjI#\
while(l SortUtil.swap(data,l,r); R1/c@HQw?
SortUtil.swap(data,l,j); =XK}eQ_d
|KY-kRN7
if((l-i)>THRESHOLD){ <LzxnTx=
stack[++top]=i; V%z?wDC
stack[++top]=l-1; ens]?,`0
} *[m:4\
if((j-l)>THRESHOLD){ y/:%S2za>
stack[++top]=l+1; d!4TwpIgx
stack[++top]=j; (z8;J>7
} R7K`9 c1f6
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} ,L lYRj 5
file://new InsertSort().sort(data); uE<8L(*B
insertSort(data); ^B%c3U$o
} g"k4Z
/** 2r;h">
* @param data ca3SE^
*/ q"6$#o{~U
private void insertSort(int[] data) { IUDH"~f
int temp; ~Uey'Xz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wlsx|
} ;^u,[d
} _C(fz CK
} {}rnn$HQe
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} ^#Mp@HK
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归并排序: .ZV='i()X
j S[#R_
package org.rut.util.algorithm.support; sp
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import org.rut.util.algorithm.SortUtil; wy
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/** aSu^
* @author treeroot LnKgT1
* @since 2006-2-2 Aj=GekX{
* @version 1.0 wu><a!3`=o
*/ /-i m
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public class MergeSort implements SortUtil.Sort{ ivn2
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/* (non-Javadoc) !icI Rqcf=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w-2#CX8jY
*/ s^SU6P/]
public void sort(int[] data) { "(vK.-T
int[] temp=new int[data.length]; Z^z{,
u;!
mergeSort(data,temp,0,data.length-1); 2~l7WW+lx,
} I>JE\## ^n
rsLkH&aM
private void mergeSort(int[] data,int[] temp,int l,int r){ PH%'^YAl7
int mid=(l+r)/2; MG~Z)+g=y
if(l==r) return ; Rd5-ao4
mergeSort(data,temp,l,mid); X 6tJ
mergeSort(data,temp,mid+1,r); ;6D3>Lm
for(int i=l;i<=r;i++){ p5tb=Zg_
temp=data; e^3D`GA
} ('Qq"cn#
int i1=l; ok0ZI>=,
int i2=mid+1; |m6rF7Q
for(int cur=l;cur<=r;cur++){ a/J Mg
if(i1==mid+1) 0nL
#-`S
data[cur]=temp[i2++]; Yj*T'<e
else if(i2>r) 71Za!3+
data[cur]=temp[i1++]; pgiZA?r*<
else if(temp[i1] data[cur]=temp[i1++]; 2O*At%CzW
else LTo5v
data[cur]=temp[i2++]; F8dr-"G
} n|6G\99l+M
} Du65>O
8h }a:/
} qg=`=]j
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改进后的归并排序: U;4i&=.!
"uT2 DY[
package org.rut.util.algorithm.support; sve} ent
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import org.rut.util.algorithm.SortUtil; +])<}S!M
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/** U5TkgHN{y
* @author treeroot tpEy-"D&
* @since 2006-2-2 Hg<aU*o;
* @version 1.0 7)5G 1
*/ _h5d~
public class ImprovedMergeSort implements SortUtil.Sort { S{N4[U?V>
2T)k-3
private static final int THRESHOLD = 10; C?>d$G8
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/* cu
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* (non-Javadoc) Knqv|jJVx1
* JVkuSIR>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *?d\Zcj85[
*/ q~
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public void sort(int[] data) { >r7PK45.K
int[] temp=new int[data.length]; ?d%{-
mergeSort(data,temp,0,data.length-1); =X^a
} E;{CoL
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private void mergeSort(int[] data, int[] temp, int l, int r) { gaz",kK<
int i, j, k; hnB`+!
int mid = (l + r) / 2; xvl{o
if (l == r) {<@ud0A:\
return; .\T!oSb4[
if ((mid - l) >= THRESHOLD) W_E^+Wl@
mergeSort(data, temp, l, mid); l0`bseN<
else 0m]QQGvJ{
insertSort(data, l, mid - l + 1); F~fBr
if ((r - mid) > THRESHOLD) T9&{s-3*
mergeSort(data, temp, mid + 1, r); }T(=tfv@
else ~!~i_L\V
insertSort(data, mid + 1, r - mid); u&uFXOc'
&g&,~Y/z;
for (i = l; i <= mid; i++) { KJ32L
temp = data; Q"D
} j0~am,yZ
for (j = 1; j <= r - mid; j++) { jT$J~MpHh
temp[r - j + 1] = data[j + mid]; } % Ie
} 89^g$ ac
int a = temp[l]; YW6a?f^!
int b = temp[r]; @ Do.Wgt
for (i = l, j = r, k = l; k <= r; k++) { O50<h O]l
if (a < b) { _b&26!gl
data[k] = temp[i++]; qpjZ-[UC
a = temp; f3G:J<cL
} else { {[tmz;C
data[k] = temp[j--]; yP# Y:s
b = temp[j]; .U=x2txb
} zps=~|
} /7\q#qIm:
} ]r0j
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/** YcX"Z~O6j=
* @param data TMY. z
* @param l X"d"a={]
* @param i y3b"'-%
*/ m4oj1h_4
private void insertSort(int[] data, int start, int len) { tmq?h%O>
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }:c~5whN
} 4V4S5V
} B-w`mcqp$
} u9KT_`
)
} '_4apyq|
_,60pr3D'
堆排序: /huh}&NNu
M^Z=~512g
package org.rut.util.algorithm.support; !KOa'Ic$V
e,p*R?Y{[
import org.rut.util.algorithm.SortUtil; z"yW):X
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/** aWJ
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* @author treeroot !ITM:%
* @since 2006-2-2 c}n66qJF5
* @version 1.0 OYt_i'Q
*/ 4hxP`!<
public class HeapSort implements SortUtil.Sort{ S-o)d
P HOngn
/* (non-Javadoc) q x1Js3%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j>;1jzr2}
*/ -ak.wwx\
public void sort(int[] data) { FWW@t1)
MaxHeap h=new MaxHeap(); /iM1
h.init(data); G\MeJSt*
for(int i=0;i h.remove(); K;"oK
System.arraycopy(h.queue,1,data,0,data.length);
0LL65[
} HP_h!pvx
%La7);SeY
private static class MaxHeap{ 7glf?oE
^`lrKk
void init(int[] data){ }JST(d&
this.queue=new int[data.length+1]; TA/hj>rV
for(int i=0;i queue[++size]=data; b3[[ Ah-
fixUp(size); [Z2[Iy
} j0+D99{R
} e#k rr
1)h<)
private int size=0; KJOb1MM
f/8&-L
private int[] queue; @]#[TbNo
0aY\(@
public int get() { cq?,v?m
return queue[1]; IFew3!{\
} qF$y
p>|#
QOUyD;0IW
public void remove() { !2HF|x$
SortUtil.swap(queue,1,size--); M0lJyzJ
fixDown(1); BC_<1
c
} R\3v=PR[
file://fixdown ;}f {o^ ]'
private void fixDown(int k) { |-{e!&
int j; bws}'#-*
while ((j = k << 1) <= size) { t^K Qv~
if (j < size %26amp;%26amp; queue[j] j++; iR9duP+
if (queue[k]>queue[j]) file://不用交换 xg,
9~f[
break; ob/<;SrU<
SortUtil.swap(queue,j,k); @.a59kP8X
k = j; J`0dF<<{[y
} ZDzG8E0Sq
} ]?T^tJ
private void fixUp(int k) { Hpz1Iy@
while (k > 1) { ZG1TRF "
int j = k >> 1; 6l2O>V
if (queue[j]>queue[k]) QQN6\(;-
break; Wd!Z`,R
SortUtil.swap(queue,j,k);
+ug2p;<B
k = j; k=kkF"
} =s*c(>
} )K]p^lO
J5jI/P
} 6p&2A
( z)#}TC
} &F#eYEuy
p|nPu*R-\
SortUtil: "{E%Y*
_8y4U[L
package org.rut.util.algorithm; f
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import org.rut.util.algorithm.support.BubbleSort; U&
import org.rut.util.algorithm.support.HeapSort; ._j?1Fw`
import org.rut.util.algorithm.support.ImprovedMergeSort; |P&
\C8h
import org.rut.util.algorithm.support.ImprovedQuickSort; DAf@-~c
import org.rut.util.algorithm.support.InsertSort; Q.jThP`p
import org.rut.util.algorithm.support.MergeSort; -wx~*
import org.rut.util.algorithm.support.QuickSort; :%AEwRZ
import org.rut.util.algorithm.support.SelectionSort; C:sgT6
import org.rut.util.algorithm.support.ShellSort; %wru)
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/** tMP"9JE,
* @author treeroot Oh10X.)i
* @since 2006-2-2 -&1P2m/46
* @version 1.0 YR/I<m`]}
*/ QX}JQ<8
public class SortUtil { (U$;0`
public final static int INSERT = 1; /%7&De6Xg
public final static int BUBBLE = 2; 7D>_<)%d=
public final static int SELECTION = 3; s{7bu|0
public final static int SHELL = 4; P"}"q ![
public final static int QUICK = 5; V>obMr^5
public final static int IMPROVED_QUICK = 6; u' kG(<0Y
public final static int MERGE = 7; B0Z>di:
public final static int IMPROVED_MERGE = 8; AFBWiuwI3
public final static int HEAP = 9; fD\Fq'29{
J[uH@3v
public static void sort(int[] data) { N}#"o
sort(data, IMPROVED_QUICK); icIWv
} +3XaAk
private static String[] name={ ^yl}/OD
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /%jX=S.5h<
}; ;K>'Gl
H{i|?a)
private static Sort[] impl=new Sort[]{ U}Puq5[ ?
new InsertSort(), pZ*%zt]-a
new BubbleSort(), h:G>w`X
new SelectionSort(), >L "+8N6
new ShellSort(), nTtEv~a_n
new QuickSort(), :EYUBtTj
new ImprovedQuickSort(), n!SHExBp
new MergeSort(), '`<Fys&:
new ImprovedMergeSort(), #1*7eANfr
new HeapSort()
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}; 5wAKA`p"z
! N!pvK;
public static String toString(int algorithm){ r: >RH,
return name[algorithm-1]; mqsAYzG
} ^[bFG KE
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public static void sort(int[] data, int algorithm) { !"RRw&0M
impl[algorithm-1].sort(data); [742s]j
} Nr*X1lJ6
w?8\9\ ;?
public static interface Sort { 2v@B7r4}
public void sort(int[] data); ] `q]n
} kMLJa=]$
tEo-Mj5:
public static void swap(int[] data, int i, int j) { NMhpKno
int temp = data; rx9y^E5T`;
data = data[j]; 2T?Y
data[j] = temp; T fIOS]
} [Pjitw/?
} v#s*I/kw