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。 /d"@$+
插入排序: j}tGcFwvSN
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package org.rut.util.algorithm.support; Q*'OY~
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import org.rut.util.algorithm.SortUtil; 0/!0W%f[}
/** <ycR/X
* @author treeroot o F_{oV'
* @since 2006-2-2 Y1ca=ewFx
* @version 1.0 d9jD?HgM(
*/ sy4Nm0m
public class InsertSort implements SortUtil.Sort{ ld({1jpX,
1#AxFdm1
/* (non-Javadoc) _tjexS'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .qYQ3G'V
*/ !:esdJH
public void sort(int[] data) { &dni6E4
int temp; q;sZwp<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UpSJ%%.n
} fJk'5kv
} Sj/v:
} F9las#\J
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} ku}`PS0UGd
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冒泡排序: / <+`4n
^liW*F"UY
package org.rut.util.algorithm.support; L+@X]OW8
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import org.rut.util.algorithm.SortUtil; ]WcN6|b+
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/** :1bDkoK
* @author treeroot )^6Os2
* @since 2006-2-2
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* @version 1.0 ^Ojg}'.Ygv
*/ t7V7 TL!5'
public class BubbleSort implements SortUtil.Sort{ (64es)B}"
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/* (non-Javadoc) RDy&i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JqYa~6 C
*/ >YF=6zq.`
public void sort(int[] data) { 8uW%jG3/
int temp; 2_M+o]Z^
for(int i=0;i for(int j=data.length-1;j>i;j--){ >O~V#1 H
if(data[j] SortUtil.swap(data,j,j-1); {t|#>UCK
} $[7/~I>m
} >mEfd=p
} w?N>3`Jnf
} ,PJC FQMR
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} +IjBeQ?
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选择排序: gsa@ci
G'dN<Nw6
package org.rut.util.algorithm.support; :mf&,?
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import org.rut.util.algorithm.SortUtil; u.?jW vcv
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/** `/!FZh<
* @author treeroot 7d|1T'
* @since 2006-2-2 i`vy<Dvpz
* @version 1.0 utC^wA5U~
*/ 7&%#bMnw
public class SelectionSort implements SortUtil.Sort { l2dj GZk
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/* C6@*l~j
* (non-Javadoc) ^mC,Z+!
* L8NZU*"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FDGG$z?>m
*/ !g=b=YK
public void sort(int[] data) { s&$e}yxVO
int temp; Zv-1*hhHf
for (int i = 0; i < data.length; i++) { jWh)bsqI!
int lowIndex = i; !)W#|sys&
for (int j = data.length - 1; j > i; j--) { ]Ge>S?u
if (data[j] < data[lowIndex]) { Y(?SE< 4R
lowIndex = j; |68/FJZ,5
} -O-?hsV)y
} ObS#aRq
SortUtil.swap(data,i,lowIndex); &uBfsa$
} _RZ"WA^[
} Iu >4+6
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} zzW$F)X
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Shell排序: rwgj]
^L7!lzyo
package org.rut.util.algorithm.support; &1`Y&x:p
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import org.rut.util.algorithm.SortUtil; ;<GxonIV
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/** YmjA!n
* @author treeroot Eelv i5
* @since 2006-2-2 m@w469&<(q
* @version 1.0 RQ^
\|+_
*/ W@'*G*f
public class ShellSort implements SortUtil.Sort{ a69e^;,>q
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/* (non-Javadoc) ?<8c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dZb;`DjTH
*/ 5dD8s-;^T
public void sort(int[] data) { j?k|-0
for(int i=data.length/2;i>2;i/=2){ 87eH~&<1
for(int j=0;j insertSort(data,j,i); h/8p2Mrqi
} VhAJ1[k4!
} pQC|_T#u
insertSort(data,0,1); K~S*<?
} nXI8 `7D
}#g+~9UK
/** ozl!vf# kv
* @param data
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* @param j |k%1mE(+=s
* @param i 5ddfdIp
*/ Ld/6{w4ir
private void insertSort(int[] data, int start, int inc) { ]IeLKcn
int temp; gMkSl8[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UK*v\TMv
} 4*5 e0:O
} M_2>b:#A*
} "Ehh9 m1&
DBLM0*B
} zpeCT3Q5O
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快速排序: u=vBjaN2_w
bQwG"N
package org.rut.util.algorithm.support; E'(nJ
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import org.rut.util.algorithm.SortUtil; /;1O9HJa
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/** #:/27
* @author treeroot FH$q,BI!R
* @since 2006-2-2 _G'A]O/BZD
* @version 1.0 6KXW]a `
*/ c14d0x{
public class QuickSort implements SortUtil.Sort{ uGqeT#dP
<hTHY E=
/* (non-Javadoc) #M+_Lk3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^3H:I8gRCl
*/ .]JIo&>5
public void sort(int[] data) { T{"Ur:p
quickSort(data,0,data.length-1); n~}[/ly
} k)X\z@I'
private void quickSort(int[] data,int i,int j){ W3\E;C-g0
int pivotIndex=(i+j)/2; 2 >j0,2
file://swap YPNW%N!$|
SortUtil.swap(data,pivotIndex,j); p4UEhT
e5n]@mu%
int k=partition(data,i-1,j,data[j]); <mVFC
SortUtil.swap(data,k,j); 3
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if((k-i)>1) quickSort(data,i,k-1); 1sonDBd0@;
if((j-k)>1) quickSort(data,k+1,j); n00J21
_<Ij)#Rq7
} p|mFF0SL
/** (c^ {T)
* @param data ;BT7pyu%[
* @param i 3/yt
* @param j dC-~=}HR^
* @return {x_cgsn
*/ ',t*:GBZCf
private int partition(int[] data, int l, int r,int pivot) { Rt&5s)O'
do{ y@1QVt04
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .y3E@0a
SortUtil.swap(data,l,r); Th*}U&
} 0chpC)#Q3;
while(l SortUtil.swap(data,l,r); l}/&6hI+d
return l; HpfZgkC+
} H)"]I3
yg*
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} W83PMiN"T-
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改进后的快速排序: Ak kF6d+
H^@Hco>|
package org.rut.util.algorithm.support; H-v[ShE
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import org.rut.util.algorithm.SortUtil; 7wPI)]$
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/** ``$$yS~d};
* @author treeroot {#4a}:3
* @since 2006-2-2 H>;,r,
* @version 1.0 XBkaum4j
*/ [6JDS;MIN
public class ImprovedQuickSort implements SortUtil.Sort { 7
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private static int MAX_STACK_SIZE=4096; eB1NM<V
private static int THRESHOLD=10; D M+MBK
/* (non-Javadoc) I9>vm]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &0%Zb~ts
*/ dzAumWoh
public void sort(int[] data) { SG|AJ9
int[] stack=new int[MAX_STACK_SIZE]; \ERxr
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int top=-1; ]sL.+.P
int pivot; Y;huTZ
int pivotIndex,l,r; k}&wy
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stack[++top]=0; JehanF[
stack[++top]=data.length-1; ]Sa#g&}T>
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while(top>0){ YlGUd~$`"+
int j=stack[top--]; V;"2=)X
int i=stack[top--]; A%F8w'8(
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pivotIndex=(i+j)/2; ly0L)L]\
pivot=data[pivotIndex]; &oB*gGRw=7
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SortUtil.swap(data,pivotIndex,j); A46q`l9B
jdu6P+_8n
file://partition vo\'ycPv
l=i-1; R.HvqO
r=j; b+J|yM<`
do{ z _\L@b
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R+(f~ j'
SortUtil.swap(data,l,r); ?hc=w 2Ci
} vfv?QjR
while(l SortUtil.swap(data,l,r); ~/-SKGzo-
SortUtil.swap(data,l,j); A^X\
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if((l-i)>THRESHOLD){ rA B=H*|6
stack[++top]=i; wbKJ:eWgt
stack[++top]=l-1; [7gz?9VyLF
} Xn%7{%;h
if((j-l)>THRESHOLD){ Ao` e{
stack[++top]=l+1; IE996
stack[++top]=j; :.XlAQR~b
}
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o4EY2
} S|k@D2k=
file://new InsertSort().sort(data); 50-7L,
insertSort(data); tugIOA
} -bOtF%
/** Cy6!?Mik
* @param data w`f66*@Q1
*/
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private void insertSort(int[] data) { SH =S>
int temp; Ea<\a1Tl43
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #xu1
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} =0Y0o_
} U!o
}
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} T5ky:{Y(
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归并排序: ojf6@p_
<_|@~^u
package org.rut.util.algorithm.support; ?zutU w/m
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import org.rut.util.algorithm.SortUtil; R(^Sse
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/** 5Wa)_@qI)`
* @author treeroot XA;PWl5!
* @since 2006-2-2 R--s
u:
* @version 1.0 2SD
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*/
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public class MergeSort implements SortUtil.Sort{ Tb?X KO,
_zM?"16I}
/* (non-Javadoc) KNQj U-A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R0*P,~L;|
*/ U9b[t
public void sort(int[] data) { @^ YXE,
int[] temp=new int[data.length]; cRr3!<EZ
mergeSort(data,temp,0,data.length-1); ;r"r1'a+@
} DGCvH)Q
((`{-y\K
private void mergeSort(int[] data,int[] temp,int l,int r){ lrKT?siB
int mid=(l+r)/2; ;0oL*d[1Z
if(l==r) return ; 9ETdO,L)f
mergeSort(data,temp,l,mid); X{Vs
mergeSort(data,temp,mid+1,r); H#hpaP;
for(int i=l;i<=r;i++){ Hkia&nz'3
temp=data; UF5_be,D
} ?r&~(<^z
int i1=l; r5hkxk'
int i2=mid+1; DeF`#a0E
for(int cur=l;cur<=r;cur++){ I
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if(i1==mid+1) T|S-?X,
data[cur]=temp[i2++]; ;ZI8vFb
else if(i2>r) |z_Dw$-xm
data[cur]=temp[i1++]; 5 cQ]vb
else if(temp[i1] data[cur]=temp[i1++]; jmv=rl>E*
else 4+d(d
data[cur]=temp[i2++]; @aUNyyVP
} )hO%W|
} k}<H
l}^ziY!
} =#9#unvE!
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改进后的归并排序: yY UAH-
fmv:vs /9
package org.rut.util.algorithm.support; ]$s)6)kW
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import org.rut.util.algorithm.SortUtil; |-\anby<
DPW^OgL;
/** Lc}hjK
* @author treeroot L7rr/D
* @since 2006-2-2 ,D`jlY-1l
* @version 1.0 [T7&)p
*/ &4WA/'>R
public class ImprovedMergeSort implements SortUtil.Sort { }15&<s
~$4(|Fq/
private static final int THRESHOLD = 10; jA:'P~`Hj
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/* ;7qzQ{Km
* (non-Javadoc) 6vNn;-gg.
* %4x0^<k~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _$IWr)8f
*/ zB+e;x f |
public void sort(int[] data) { C,>n
int[] temp=new int[data.length]; oupWzjo
mergeSort(data,temp,0,data.length-1); yxpv;v:)=
} ceks~[rP
~1*37 w~
private void mergeSort(int[] data, int[] temp, int l, int r) { |*zgX]-+;
int i, j, k; HX| p4-L
int mid = (l + r) / 2; R -ek O7z
if (l == r) )^qXjF
return;
P6> C+T1
if ((mid - l) >= THRESHOLD) qlPIxd
mergeSort(data, temp, l, mid); cL4Go,)w
else S m=ln)G=
insertSort(data, l, mid - l + 1); \^y~w~g?
if ((r - mid) > THRESHOLD) AG vhSd7
mergeSort(data, temp, mid + 1, r); v:74iB$i/C
else RLQ*&[A}
insertSort(data, mid + 1, r - mid); s1W n.OGR4
6 A]a@,PC
for (i = l; i <= mid; i++) { 3*%+NQIj
temp = data; RfvvX$
} #X*);cn
for (j = 1; j <= r - mid; j++) { Px?"5g#+
temp[r - j + 1] = data[j + mid]; 1nvT={'R
} [Pp#r&4H
int a = temp[l]; 8irTGA
int b = temp[r]; +[n#{;]<
for (i = l, j = r, k = l; k <= r; k++) { v.:Q& ]
if (a < b) { `/R. 5;$|
data[k] = temp[i++]; z$m(@Q
a = temp; w0$+v/
} else { Gb[J3:.
data[k] = temp[j--]; Wy6a4oY
b = temp[j]; 4`oKvL9
} =(TMcu$4`
} ckP AH E@
} .HY,'oC.
It/'R-H
/** 7W4m&+
* @param data $;ny`^8
* @param l |p*cI @
* @param i
X_Lt{mf
*/ d<OdQvW.
private void insertSort(int[] data, int start, int len) { =$#5Ge]b
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); aG =6(ec.
} "Zn
nb*pOM
} h|'|n/F
} 45%D^~2~F
} M"K $.m@t
Xu#?Lw
堆排序: /03Wst
P>~Usuf4
package org.rut.util.algorithm.support; @Bkg<
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import org.rut.util.algorithm.SortUtil; T&S=/cRBK}
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/** e9:pS WA-n
* @author treeroot Q8l vwip
* @since 2006-2-2 gxI/MD~!>
* @version 1.0 ?@MY +r_G
*/ t Jtp1$h
public class HeapSort implements SortUtil.Sort{ &l-d_dh
HtE^7i*_
/* (non-Javadoc) 438r]f?0|{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DrBkR`a?
*/ ]1GyEr:
public void sort(int[] data) { 9$[MM*r
MaxHeap h=new MaxHeap(); xo
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h.init(data); d,meKQn
for(int i=0;i h.remove(); rW O#h{
System.arraycopy(h.queue,1,data,0,data.length); gV:0&g\v
} x=W s)&H_Y
Ik5-ooZ&{
private static class MaxHeap{ Xooh00
Z5wQhhH
void init(int[] data){ ~pI`_3
this.queue=new int[data.length+1]; wLO"[,
for(int i=0;i queue[++size]=data; D"fjk1
fixUp(size); k{Y\YG%b
} $OGMw+$C^
} w*@9:+
n@C#,v#^0
private int size=0; 1UrkDz?X
91a);d
private int[] queue; f<<$!]\
p ~+sk1[.
public int get() { l%
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return queue[1]; 7:$dl#
} Ew{N2
trLxg H_Y
public void remove() { }VH2G94Ll
SortUtil.swap(queue,1,size--); w+\RSqz/
fixDown(1); R[vX+d!7
} v=uQ8_0~N
file://fixdown X^m@*,[s
private void fixDown(int k) { V0#E7u`4
int j; L5&,sJz
while ((j = k << 1) <= size) { FO]f 4@
if (j < size %26amp;%26amp; queue[j] j++; .OW5R*
if (queue[k]>queue[j]) file://不用交换 %.uN|o&n
break; 1T,Bd!g
SortUtil.swap(queue,j,k);
%>O}bdSf
k = j; Xpkj44cd@
} >A6PH*x
} bgInIe
private void fixUp(int k) { Ia^/^>
while (k > 1) { )J[Ady^5
int j = k >> 1; .'-t>(}v
if (queue[j]>queue[k]) [a^<2V!vMn
break; 1&=2"
SortUtil.swap(queue,j,k); rX`fjS*C
k = j; P=9sP:[f6
} F*:H&,
} DAMw(
geqx":gpx9
} `I|Y7GoUO
cIuCuh0I`
} pFo,@M
dftX$TS
SortUtil: `\BBdQ#bH
{+9t!'
package org.rut.util.algorithm;
"JYWsE
:}v:=c k
import org.rut.util.algorithm.support.BubbleSort; c Ct5m
import org.rut.util.algorithm.support.HeapSort; "(+aWvb
import org.rut.util.algorithm.support.ImprovedMergeSort; GsqO^SV
import org.rut.util.algorithm.support.ImprovedQuickSort; $VxuaOTyVZ
import org.rut.util.algorithm.support.InsertSort; ]HG>Og
import org.rut.util.algorithm.support.MergeSort; MAc/ T.[
import org.rut.util.algorithm.support.QuickSort; ~~ty9;KYL
import org.rut.util.algorithm.support.SelectionSort; ^M1O)
import org.rut.util.algorithm.support.ShellSort; 8Tc:TaL
f+c{<fX
/** L#_QrR6Sny
* @author treeroot <%`z:G3
* @since 2006-2-2 P[Vf$ q<
* @version 1.0 `-rtU
*/ H[r6 4~Sth
public class SortUtil { $T2zs$
public final static int INSERT = 1; 1<M~#
public final static int BUBBLE = 2; 6HVGqx
public final static int SELECTION = 3; z7*mT}Q
public final static int SHELL = 4; \]L ha
public final static int QUICK = 5; ,#.^2O9-^
public final static int IMPROVED_QUICK = 6; 3ZYrNul"
public final static int MERGE = 7; rV
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public final static int IMPROVED_MERGE = 8; `zcpaE.@
public final static int HEAP = 9; :\1vy5 _
W5RZsS]
public static void sort(int[] data) { -dUXd<=ue
sort(data, IMPROVED_QUICK); }-WuHh#
} &G+:t)|S
private static String[] name={ \FyHIs
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3\P/4GK)
}; ~^eC?F(
fhQ N;7
private static Sort[] impl=new Sort[]{ -]MZP:s
new InsertSort(), O<0-`=W,a
new BubbleSort(), 8O^z{Yh7
new SelectionSort(), 7q^a@5f BG
new ShellSort(), xSjs+Y;Mu
new QuickSort(), sQY0Xys<4
new ImprovedQuickSort(), c5HW.3"
new MergeSort(), 4wwRNu*
new ImprovedMergeSort(), ?vP}#N!=d
new HeapSort() e(-Vp7vXG
}; 4f,%@s)zn
}e,*'mCC*
public static String toString(int algorithm){ 9kU|?JE
return name[algorithm-1]; js=w!q0)9
} ns8I_H
rP&.`m88n
public static void sort(int[] data, int algorithm) { N5fMMi(O
impl[algorithm-1].sort(data); oVnHbvP1X
} d[KG0E5`
[i N}W5
m
public static interface Sort { _5768G`P
public void sort(int[] data); `"E<%$|ZQy
} }Q>??~mVl
x$V[xX
public static void swap(int[] data, int i, int j) { /57)y_ \
int temp = data; lem\P_V)
data = data[j]; xV5eKV
data[j] = temp; @1 )][r-7
} :U#4H;kk~j
} EXbhyg