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。 bl8y
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插入排序: Hy2~D:34
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package org.rut.util.algorithm.support; UmP\;
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import org.rut.util.algorithm.SortUtil; K^[Dz\ov5
/** j'LO'&sQ(
* @author treeroot @=6$ImU
* @since 2006-2-2 _^NL{R/
* @version 1.0 `6Yk-5
*/ 6$5SS#
public class InsertSort implements SortUtil.Sort{ 03I*@jj
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/* (non-Javadoc) iRI7x)^0"z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0PJ7o#}_{@
*/ {xQ(xy
public void sort(int[] data) { "tU,.U
int temp; *qw//W
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bP1]:^ x@W
} ?_@Mg\Hc
}
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} .10$n*
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} $+w -r#,
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冒泡排序: I~>Ye<g#
IUwMIHq&sW
package org.rut.util.algorithm.support; h~.z[
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import org.rut.util.algorithm.SortUtil; MOu=
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/** { VFr8F0*H
* @author treeroot |BE`ASW;
* @since 2006-2-2 .Za)S5U
* @version 1.0 LX;" Mz>
*/ =U3rOYbP;
public class BubbleSort implements SortUtil.Sort{ , n47.S
b,-qyJW6
/* (non-Javadoc)
W[oQp2 =
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9>[*y8[:0
*/ cp3O$S
public void sort(int[] data) { %gV~e@|
int temp; oGqbk x
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~|=goHmm[
if(data[j] SortUtil.swap(data,j,j-1); eGlPi|
} ~cW,B}
} )\fLS d
} F@kd[>/[
} =
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} OVU+V 0w1a
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选择排序: 9\a;75a
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package org.rut.util.algorithm.support; pcO0xrI
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import org.rut.util.algorithm.SortUtil;
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/** vjO@"2YEw
* @author treeroot 6@geakq
* @since 2006-2-2 \[W)[mH_
* @version 1.0 /nVGr]t_pj
*/ S3.76&
public class SelectionSort implements SortUtil.Sort { si`h(VD9w
;n;bap
/* Eh/Z4pzT
* (non-Javadoc) eaCh;IpIf
* !5=S2<UX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }J|Pd3Q Sf
*/ pn-`QB:{h
public void sort(int[] data) { 8;1,saA_9
int temp; !t!\b9=
for (int i = 0; i < data.length; i++) { b[`fQv$G
int lowIndex = i; 2mfKy9QxO
for (int j = data.length - 1; j > i; j--) { fFJu]
if (data[j] < data[lowIndex]) { 7':qx}c#!1
lowIndex = j; hYEUiQ
} wJu,N(U
} KkD&|&!Q7u
SortUtil.swap(data,i,lowIndex); 9a3mN(<
} oeIza<:=R
} GR>kxYM%q
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} >Eqr/~Q
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Shell排序: A4hbh$
O[<0\
package org.rut.util.algorithm.support; /YT _~q=:
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import org.rut.util.algorithm.SortUtil; X>4qL'b:z
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/** :~%{
* @author treeroot m9 D'yXZ
* @since 2006-2-2 o2e gNTG
* @version 1.0 b_rHt
s
*/ (hFyp}jkk
public class ShellSort implements SortUtil.Sort{ VFLW@
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/* (non-Javadoc) )H|cri~D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) = &"x6F.`
*/ 8m"jd+
public void sort(int[] data) { '4]_~?&x
for(int i=data.length/2;i>2;i/=2){ =dDr:Y<@*
for(int j=0;j insertSort(data,j,i); LMTz/M
} uwo\FI
} EaUO>S
insertSort(data,0,1); #d;/Me
} 4"~l^yK
Z|6,*XEc
/** =Cg1I\
* @param data L wP
* @param j ['jr+gIfQ
* @param i -0f,qNF
*/ lNba[;_
private void insertSort(int[] data, int start, int inc) { ?{rpzrc!*
int temp; `Tk GI0q
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `|WEzW~
} bd)'1;p
} i$JN
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} X(JE]6_
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j
} N977F$Bo
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快速排序: Y4Y~ep
Nn='9s9F?}
package org.rut.util.algorithm.support; S?<hs,
fOJTy0jX8
import org.rut.util.algorithm.SortUtil; ^\C Fke=
nN5fP<H2x
/** _:7:ixN[Ie
* @author treeroot ><i: P*ht
* @since 2006-2-2 l?)!^}Qc
* @version 1.0 L25%KGg'o
*/ Q:U>nm>xA
public class QuickSort implements SortUtil.Sort{ 7(l>Ck3B#
Nk;ywC"e;
/* (non-Javadoc) hMnm>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \-8S"
*/ 5jAS1XG
public void sort(int[] data) { ]\m>N]P]
quickSort(data,0,data.length-1); \wF-[']N
} L30$
private void quickSort(int[] data,int i,int j){ $8WWN} OC
int pivotIndex=(i+j)/2; \>[k0<
file://swap b} FhC"'i
SortUtil.swap(data,pivotIndex,j); %ty`Oa2
7KL@[
int k=partition(data,i-1,j,data[j]); WS//0
SortUtil.swap(data,k,j); 6uIgyO*;k
if((k-i)>1) quickSort(data,i,k-1); +t%1FkI\
if((j-k)>1) quickSort(data,k+1,j); EhAaaG
{"c`k4R
} 6/6{69tnr
/** otbr8&?-
* @param data nzU;Bi^m
* @param i xauMF~*
* @param j =SD^Jl{H
* @return ;zT3Fv\
*/ H3LuRGe&2
private int partition(int[] data, int l, int r,int pivot) { b|e1HCH
do{ 9,[AfI
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |y
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SortUtil.swap(data,l,r); <$??Z;6
} 7n,=`0{r
while(l SortUtil.swap(data,l,r); Y_)xytJ$
return l; +U)4V}S)
} M+*K-zt0
W*B=j[w
} 8SA"
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改进后的快速排序: n8tw8o%&[
+Fb+dU
package org.rut.util.algorithm.support; =Cd{bj.8
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import org.rut.util.algorithm.SortUtil; (hEg&@
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/** ZUkM8M$c
* @author treeroot C\4d.~C:w3
* @since 2006-2-2 QBh*x/J
* @version 1.0 n?U^vK_
*/ Z~F*$jn
public class ImprovedQuickSort implements SortUtil.Sort { (D:-p:q.
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private static int MAX_STACK_SIZE=4096; v*OV\h.
private static int THRESHOLD=10;
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/* (non-Javadoc) _PcF/Gyk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [(eX\kL
*/ (%OZ `?`
public void sort(int[] data) { zf&:@P{
int[] stack=new int[MAX_STACK_SIZE]; $6(a6!
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int top=-1; mx#%oJnsi
int pivot; S*gm[ZLQ
int pivotIndex,l,r; #^BttI
icb*L ~qm
stack[++top]=0; !9.FI{W
stack[++top]=data.length-1; KY}H-
{,u})U2
while(top>0){ *nYg-)
int j=stack[top--]; "7'P Lo3O
int i=stack[top--]; :d pwr9)
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pivotIndex=(i+j)/2; $s4.Aj
pivot=data[pivotIndex]; 8t. QFze?
lXZ*Pb<j
SortUtil.swap(data,pivotIndex,j); /!MVpi'6&
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file://partition Q6wa-Y,
l=i-1; 8d2\H*a9~
r=j; S~hu(x#
do{ 6ypLE@Mk
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .rITzwgB
SortUtil.swap(data,l,r); 1=7ASS9
} UhrRB
while(l SortUtil.swap(data,l,r); m"'}{3$%
SortUtil.swap(data,l,j); \A,zwdt
P
8\^A;5
if((l-i)>THRESHOLD){ W+/_0GgQ3
stack[++top]=i; rwVp}H G
stack[++top]=l-1; m[KmXPFht1
} nmts% u
if((j-l)>THRESHOLD){ g8l6bh$}
stack[++top]=l+1; ma+AFCi
stack[++top]=j; Sb> &m
} pB#I_?(
+wJ!zab`
} awwSgy
file://new InsertSort().sort(data); 0Sz[u\w
insertSort(data); s5rD+g]E`
} @"MQ6u G>
/** [8^q3o7n
* @param data hl7 z1h
*/ M2N8?Ycv3
private void insertSort(int[] data) { f*B-aj#
int temp; A= 5Ebu!z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;Xy=;Z.]i
} }{VOy PG
} \ ZE[7Ae
} 6o7t eX
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} YcX\t6VK
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归并排序: !{(Bc8
hT
CUYA:R<)
package org.rut.util.algorithm.support; 3V?x&qlP>
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import org.rut.util.algorithm.SortUtil; [5& nH@og
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/** Y}v3J(l
* @author treeroot U31@++C[
* @since 2006-2-2 <K`E*IaW
* @version 1.0 I](a 5i
*/ p/?o^_s
public class MergeSort implements SortUtil.Sort{ r+8D|stS
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/* (non-Javadoc) %ACW"2#(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U]~@_j
*/ Tk4>Jb
public void sort(int[] data) { Lr D@QBT
int[] temp=new int[data.length]; j}eb
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mergeSort(data,temp,0,data.length-1); DkEv1]6JI_
} T1$E][@Iv
P+}~6}wJE
private void mergeSort(int[] data,int[] temp,int l,int r){ 8zD>t~N2C
int mid=(l+r)/2; 7!pKlmQ
if(l==r) return ; z'_Fg0kR{
mergeSort(data,temp,l,mid); :86:U 0^
mergeSort(data,temp,mid+1,r); ^ls@Gr7`P
for(int i=l;i<=r;i++){ 3@Mh* \;\b
temp=data; Qk:Lo*!
} Td|u@l4B
int i1=l; PY.K_(D
int i2=mid+1; ?gl&q+mv
for(int cur=l;cur<=r;cur++){ MhD'
if(i1==mid+1) oT):#,s
data[cur]=temp[i2++]; w3(|A> s3
else if(i2>r) %7 bd}sJ#
data[cur]=temp[i1++]; J8alqs7
else if(temp[i1] data[cur]=temp[i1++]; 4SJ aAeIZ
else \D? '.Wo%
data[cur]=temp[i2++]; B2ln8NF#Q
} u^tQ2&?O!P
} Ig`q[o
-[L\:'Gp5
} tF`L]1r>
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改进后的归并排序: 'F/oR/4,
h#hr'3bI1
package org.rut.util.algorithm.support; B>^6tdz
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import org.rut.util.algorithm.SortUtil; 6:#o0OeBP
K=[7<b,:3
/**
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* @author treeroot K
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atc
* @since 2006-2-2 Fvl\.
* @version 1.0 xz8e1M
*/ rUb{iU;~m
public class ImprovedMergeSort implements SortUtil.Sort { f=F:Af!
Sv n7.Ivep
private static final int THRESHOLD = 10; Xxg|01
V/ G1C^'/
/* 73cb1kfPd
* (non-Javadoc) Trv}YT.
* :W*yfhLt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <T}U 3lL^
*/ L7C ;l,ot
public void sort(int[] data) { s|Mo3_>
int[] temp=new int[data.length]; ~v;I>ij
mergeSort(data,temp,0,data.length-1); nHdQe
} XHk"nbj
Z@0tZ^V{
private void mergeSort(int[] data, int[] temp, int l, int r) { ?.46X^
int i, j, k; .dlsiBh
int mid = (l + r) / 2; 7 m{lOR
if (l == r) m^3x%ENZ
return; 5^g*
if ((mid - l) >= THRESHOLD) I`V<Sh^Qd
mergeSort(data, temp, l, mid); MYS`@%ZV#k
else }HoCfiE=X
insertSort(data, l, mid - l + 1); wXQxZuk[
if ((r - mid) > THRESHOLD) >3uNh:|>/
mergeSort(data, temp, mid + 1, r); ,eyh%k*hz
else 8_('[89m
insertSort(data, mid + 1, r - mid); u9hd%}9Qd?
zEI+)|4?r
for (i = l; i <= mid; i++) { 9&Jf4lC94
temp = data; `}Zqmfs
} 5qz,FKx5
for (j = 1; j <= r - mid; j++) { -#|;qFD]
temp[r - j + 1] = data[j + mid]; l)%PvLbL
} =0ZRGp
int a = temp[l]; Z}+}X|
int b = temp[r]; GTdoUSUq
for (i = l, j = r, k = l; k <= r; k++) { PILpWhjL$9
if (a < b) { d0:LJ'<Q
data[k] = temp[i++]; 5kiW@{m
a = temp; #r'MfTr
} else { PK[mf\G\
data[k] = temp[j--]; &: Q'X
b = temp[j]; U,=f};
} Ehx9-*]
} s;VW
%e
} 8o~
NJ 6
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/** O4R\]B#Xu
* @param data /hl'T'RG
* @param l wMW<lT=;
* @param i 0g?)j-
*/ :$k*y%Z*N&
private void insertSort(int[] data, int start, int len) { hne@I1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cb}zCl
j o
} *[[Gu^t^!
} d0(zB5'}
} E4X6f
} LikcW#
Scrj%h%[
堆排序: 'ITq\1z
2%%\jlT_
package org.rut.util.algorithm.support; A=<7*E
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import org.rut.util.algorithm.SortUtil; hXTfmFy{n
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/** [}L~zn6>?a
* @author treeroot HRf;bKZ
* @since 2006-2-2 FNQ<k[#K'~
* @version 1.0 ,2FK$:M\
*/ b80#75Bj>
public class HeapSort implements SortUtil.Sort{ Y(PCc}/\
| b'Ut)E
/* (non-Javadoc) E%mEfj7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :G _
*/ q'mh*
public void sort(int[] data) { e*:K79y
MaxHeap h=new MaxHeap(); qf? "v;
h.init(data); RAW;ze*"
for(int i=0;i h.remove(); *[si!e%
System.arraycopy(h.queue,1,data,0,data.length); {7M++J=
} Q %o@s3~O
tsb[=W!Ar8
private static class MaxHeap{ 2*Qv6
:qK
#mQ@4k9i
void init(int[] data){ $+4DpqJ
this.queue=new int[data.length+1]; N~)-\T:ap
for(int i=0;i queue[++size]=data; `zQuhD 8W
fixUp(size); Y1PR?c
Q
} bzi"7%c
} "Rj
PTRe:
s=8H<'l
private int size=0; v)
n-
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private int[] queue; /QXUD.(
8
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public int get() { V*?cMJ_G
return queue[1]; S=qh7ML
} m+c-"arIpA
uxfh?gsL
public void remove() { DDrR9}k
SortUtil.swap(queue,1,size--); iH(7.?.r
fixDown(1); B;9,Qbb
} !l[;,l
file://fixdown F[ E'R.:
private void fixDown(int k) { '@{:FrG*U
int j; io#}z4"'qY
while ((j = k << 1) <= size) { @)Vpj\jM-C
if (j < size %26amp;%26amp; queue[j] j++; i2<z"v63
if (queue[k]>queue[j]) file://不用交换 qDdO-fPev
break; R$&;
SortUtil.swap(queue,j,k); 5H3o?x
k = j; X$kLBG[o_
} <F9-$_m
} qTuR[(
private void fixUp(int k) { i~u4v3r=
while (k > 1) { rL5=8l
int j = k >> 1; {hS!IOM
if (queue[j]>queue[k]) Z
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break; LK'(OZ
SortUtil.swap(queue,j,k); Z ]A
|"6<
k = j; 3BMz{ny=
} i%i~qTN
} lNe4e6
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Vnj
} pBqf+}g4
s$fM,l:!
} 1Yb &E7j
NpVL;6?7T
SortUtil: ZKi&f,:
'w:ugb9]
package org.rut.util.algorithm; lelmX
T}Tv}~!f
import org.rut.util.algorithm.support.BubbleSort; ucl001EK
import org.rut.util.algorithm.support.HeapSort; :w8{BIUN)
import org.rut.util.algorithm.support.ImprovedMergeSort; S
m(*<H
import org.rut.util.algorithm.support.ImprovedQuickSort; m
H:Un{,
import org.rut.util.algorithm.support.InsertSort; k0Vri$x
import org.rut.util.algorithm.support.MergeSort; J jAxNviG
import org.rut.util.algorithm.support.QuickSort; WuK<?1meN
import org.rut.util.algorithm.support.SelectionSort; V!:!c]8F
import org.rut.util.algorithm.support.ShellSort; e:G~P
u`
>.wZEQ6QK
/** 3 Zp<#
* @author treeroot <#0i*PM_
* @since 2006-2-2 Qa2h#0j
* @version 1.0 }IygU 6{G
*/ Dw
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public class SortUtil { 'aNkU
public final static int INSERT = 1; Pt"K+]Ym
public final static int BUBBLE = 2; *f+s
public final static int SELECTION = 3; uEgR>X>
public final static int SHELL = 4; o)I)I/v
public final static int QUICK = 5; YJ~<pH
public final static int IMPROVED_QUICK = 6; H;`F}qQ3
public final static int MERGE = 7; l,|Llb
public final static int IMPROVED_MERGE = 8; "~Fg-{jM%
public final static int HEAP = 9; INndTF
#Y= A#Yz,{
public static void sort(int[] data) { S.MRL,
sort(data, IMPROVED_QUICK); j~'.XD={
} Hzz{wY
private static String[] name={ "ku[b\W
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" H&s`Xr
}; 9~V'Wev
uzp\V
39
private static Sort[] impl=new Sort[]{ XL*M#Jx
new InsertSort(), NDRDP D
new BubbleSort(), {t;o^pUF
new SelectionSort(),
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new ShellSort(), hNc8uV{r=
new QuickSort(), !oyo_h
new ImprovedQuickSort(), -'c
qepC{T
new MergeSort(), Yo %U{/e
new ImprovedMergeSort(), 4QQt 0u0
new HeapSort() vU%o5y:
}; bqn(5)% {
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public static String toString(int algorithm){
bZ`#;D<
return name[algorithm-1]; i&DbZ=n2
} 7 2$S'O%,0
8cO?VH,nk
public static void sort(int[] data, int algorithm) { YI0l&'7
impl[algorithm-1].sort(data); IYn`&jS{
} C-edQWbcP
N+.Nu= +i2
public static interface Sort { mX|M]^_,z
public void sort(int[] data); q&=z^Ln!G
} ?EUg B\
kO)Y|zQ
public static void swap(int[] data, int i, int j) { 7fqQ
int temp = data; .7.1JT#@A7
data = data[j]; B-g uz[v
data[j] = temp; u""26k51
} JOuy_n
} R.i]6H!