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。 QFP9"FM5F
插入排序: N{%7OG
8'PZA,CW
package org.rut.util.algorithm.support; fo ~uI(rk
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import org.rut.util.algorithm.SortUtil; 3U<m\A1
/** ceUe*}\cr
* @author treeroot sS-dHa
* @since 2006-2-2 9q"kM
* @version 1.0 4l 67B]o
*/ Ty g>Xv
public class InsertSort implements SortUtil.Sort{ <YvXyIs
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/* (non-Javadoc) `
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8w5}9}xF
*/ SwOW%o
public void sort(int[] data) { x;~:p;]J2F
int temp; UWT%0t_T
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); </ [.1&S+\
} S= 4o@3%$
} /3,/j)`a
} ovKM;cRs/
2+9VDf2
} jR%*,IeB
ZJ3g,dc
冒泡排序: -#ZvjEaey
PYCN3s#Gi
package org.rut.util.algorithm.support; "# *W#ohVA
#8Bh5L!SJ1
import org.rut.util.algorithm.SortUtil; ?tLApy^`?
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/** !1l~UB_
* @author treeroot httywa^
* @since 2006-2-2 v]k-xn|$j
* @version 1.0 a0|hLqI
*/
V_h&9]RL
public class BubbleSort implements SortUtil.Sort{ ea=E/HR-
Z|t=t"6"
/* (non-Javadoc) s+:|b~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $cSUB
*/ }a;xs};X;
public void sort(int[] data) { R1zt6oY
int temp; 4aHogheg
for(int i=0;i for(int j=data.length-1;j>i;j--){ hhU_kI
if(data[j] SortUtil.swap(data,j,j-1); D7hTn@I
} .~i|kc]Ue
} b6-N2F1Fs
} L;3%8F\-.
} n{gEIUo#
q%sZV>
} +[G9PP6
qHk{5O3
选择排序: 7( 84j5zb
W\l&wR
package org.rut.util.algorithm.support; YYQvt
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import org.rut.util.algorithm.SortUtil; sa'1hX^@
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/**
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* @author treeroot Wk[a|>
* @since 2006-2-2 BgXZr,?
* @version 1.0 6l\5J6x
*/ AlQhKL}|s
public class SelectionSort implements SortUtil.Sort { mG1~rI
W1REF9i){
/* ]Q"T8drL
* (non-Javadoc) TsFhrtnx&X
* SW9
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {b!{~q
*/ YdhV
a!Y
public void sort(int[] data) { "W(D0oy
int temp; g}W`LIasv
for (int i = 0; i < data.length; i++) { I0mp [6
int lowIndex = i; W]po RTJ:
for (int j = data.length - 1; j > i; j--) { d27q,2f!
if (data[j] < data[lowIndex]) { nI3p`N8j*
lowIndex = j; 4kL6aSqT
} 'maX
} %RD\Sb4YV
SortUtil.swap(data,i,lowIndex); BHr ,jC
} w'TAM"D`
} %M96m
vm@V5oH
} ) ^En
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Shell排序: p)SW(pS
rn-bfzoDS
package org.rut.util.algorithm.support; NO~G4PUM0C
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import org.rut.util.algorithm.SortUtil; X,49(-~\
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/** 9G[
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* @author treeroot pN^g.
* @since 2006-2-2 _%CM<z
e
* @version 1.0 Z1,rN#p9
*/ y_9\07va<
public class ShellSort implements SortUtil.Sort{ Gi)Vr\Q.
"lt <$.
/* (non-Javadoc) UV2W~g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }R;}d(C`
*/ 1WtE ]
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public void sort(int[] data) { AGFA;X
for(int i=data.length/2;i>2;i/=2){ 54p{J
for(int j=0;j insertSort(data,j,i); Z' i@;^=A
} :u7BCV|yr
} =K:[26
insertSort(data,0,1); $z_yx
`5
} :aOR@])>o
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/** |Z>-<]p9g
* @param data i"V.$|,
* @param j )5@P|{FF
* @param i 2WS*c7Ct
*/ &h/r]KrZ
private void insertSort(int[] data, int start, int inc) { 6)1PDlB
int temp; `dm*vd
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &>AwG4HW#j
} vhF9|('G
} +JI,6)Ry
} 'u.Dt*.Uq
B :%Vq2`
} 43k'96[2d
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快速排序: u4hn9**a1
o%'1=d3R1Q
package org.rut.util.algorithm.support; YXp\C"~g
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import org.rut.util.algorithm.SortUtil; WHx#;
frcX'M}%
/** K3mP 6Z#2
* @author treeroot *Hx*s_F
* @since 2006-2-2 FF#Aq
* @version 1.0 %fg6',2
*/ H@-q NjM
public class QuickSort implements SortUtil.Sort{ ,
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LZ)g&A(j?
/* (non-Javadoc) d*tWFr|J-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :Fhk$?/r
*/ n1;a~0P
public void sort(int[] data) { T8m]f<
quickSort(data,0,data.length-1); d*|RFU
} `LoRudf_`
private void quickSort(int[] data,int i,int j){ 2Rw<0.i|
int pivotIndex=(i+j)/2; 3!9JXq%Hl
file://swap uQ3sRJi
SortUtil.swap(data,pivotIndex,j); mo<*h&;&
2:|vJ<Q
int k=partition(data,i-1,j,data[j]); |]<#![!h#
SortUtil.swap(data,k,j); b#@xg L*D
if((k-i)>1) quickSort(data,i,k-1); ~ox}e(xy
if((j-k)>1) quickSort(data,k+1,j); g#i~^4-1
3chx4
} Pt85q?- >
/** _xAru9=n^
* @param data vk|f"I
* @param i xp1/@Pw?
* @param j KGDN)@D
* @return O^\:J2I(
*/ <N<0 ?GQ
private int partition(int[] data, int l, int r,int pivot) { W!HjO;
do{ q+[ )i6!?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .=YV
SortUtil.swap(data,l,r); g5#LoGc
} hYyIC:PXR
while(l SortUtil.swap(data,l,r); K3vZ42n
return l; =p@2[Uo
} n`^jNXE
,JI] Eij^
} z(c8] Wu#
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改进后的快速排序: %qcCv9
{3KY:%6qj
package org.rut.util.algorithm.support; wDi/oH/H
vKnZ= =B
import org.rut.util.algorithm.SortUtil; V_
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/** ]+`K\G ^X
* @author treeroot TNh&g.
* @since 2006-2-2 FrMXf,}
* @version 1.0 T x
Mh_
*/ J8\l'}?&
public class ImprovedQuickSort implements SortUtil.Sort { Z5'^Hj1,
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private static int MAX_STACK_SIZE=4096; :V6
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private static int THRESHOLD=10; Up%XBA
/* (non-Javadoc) _t,aPowX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ngx2N<$<*g
*/ qy?$t:*pp
public void sort(int[] data) { q/:]+
int[] stack=new int[MAX_STACK_SIZE]; rbOJ;CK
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int top=-1; `~\SQ EY$
int pivot; 78]*Jx>L
int pivotIndex,l,r; a9&[Qv5-/
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stack[++top]=0; pGU.+[|(
stack[++top]=data.length-1; W0x9^'=s\
v8)wu=u
while(top>0){ \
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int j=stack[top--]; 7>im2"zm
int i=stack[top--]; ,l!>+@
An>ai N]
pivotIndex=(i+j)/2; +D
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pivot=data[pivotIndex]; b`%u}^B {
<- sr&
SortUtil.swap(data,pivotIndex,j); Zl%)#=kO
V%[t'uh
file://partition fqbWD)L]
l=i-1; U}HSL5v
r=j; /Q9Cvj)"
do{ 6t!=k6`1
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _=x*yDPG}
SortUtil.swap(data,l,r); ]Ls T
} :)Es]wA#HZ
while(l SortUtil.swap(data,l,r); WyV,(~y
SortUtil.swap(data,l,j); 6|Dtx5
"r
[ {"x{;
if((l-i)>THRESHOLD){ CC@U'9]bH
stack[++top]=i; :icpPv
stack[++top]=l-1; A/9<} m
} JkR%o
#>5
if((j-l)>THRESHOLD){ vD2(M1Q
stack[++top]=l+1; S7j(4@
stack[++top]=j; `[E-V
} ox<6qW
C:&Sk\
} &!;o[joG
file://new InsertSort().sort(data); .>,Y
|
insertSort(data); UazK0{t<f
} [e\IHakj
/** 5WHqD!7u
* @param data ~9@527m<',
*/ U*N{H$ACuR
private void insertSort(int[] data) { \aof
int temp; 6qQ_I0f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \+Qd=,!i(
} G$_)X%Vb I
} {8":cn
j
} .mwW`D
ekfa"X_
} ^Rl?)_)1HE
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归并排序: %q r,Ssa/
@)MG&X
package org.rut.util.algorithm.support; jB9~'>JY
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import org.rut.util.algorithm.SortUtil; rpEIDhHv
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/** [ZG>FJDl8
* @author treeroot 3bd`q
$
* @since 2006-2-2 w&}<b%l
* @version 1.0 b&,ZmDJh
*/ g~|vmVBua
public class MergeSort implements SortUtil.Sort{ eo;MFd%;
AD!w:jT9
/* (non-Javadoc) TqS s*as5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xIc||o$
*/ DHjfd+E=s
public void sort(int[] data) { F W2x
int[] temp=new int[data.length]; (!m6>m2
mergeSort(data,temp,0,data.length-1); :SwA) (1
} H#X*OJ
/J"fbBXwY
private void mergeSort(int[] data,int[] temp,int l,int r){ !:xE
X~
int mid=(l+r)/2; ":sp0(`h
if(l==r) return ; AW_ YlS
mergeSort(data,temp,l,mid); z<P?p
mergeSort(data,temp,mid+1,r); OP= oSfa
for(int i=l;i<=r;i++){ TXd6o=
temp=data; V_^pPBa
} Uv?^qe0=
int i1=l; ~T9QpL1OJ
int i2=mid+1; q|klsup
for(int cur=l;cur<=r;cur++){ kwww5p ["
if(i1==mid+1) aox@- jyr
data[cur]=temp[i2++]; TWRnty-C
else if(i2>r) Wd+kjI \
data[cur]=temp[i1++]; <tO@dI$~>
else if(temp[i1] data[cur]=temp[i1++]; 1DU
l<&4
else GM8>u O
data[cur]=temp[i2++]; >'m&/&h
} `X()"Qw
} 'b [O-6v
ETX>wZ
} AL&<SxuP
eC 2~&:$L
改进后的归并排序: 04-@c
ze
LIOw
package org.rut.util.algorithm.support; f;+.j/ +
4S+E%b|)
import org.rut.util.algorithm.SortUtil; pP# _B
EHl~y=9
/** gs.+|4dv
* @author treeroot 18kWnF]n=
* @since 2006-2-2 4y4r;[@U
* @version 1.0 <%|u1cn~!v
*/ 7N5M=f.DS(
public class ImprovedMergeSort implements SortUtil.Sort { +|<bb8%
-)&lsFF
private static final int THRESHOLD = 10; 2=<,#7zlJ
} nIYNeP?D
/* !Dc;R+Ir0!
* (non-Javadoc) x~IrqdmW
* .4w"3>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p_zVrlVb
*/ Jp8,s%
public void sort(int[] data) { W?N+7_%'
int[] temp=new int[data.length]; S<*1b 6%D
mergeSort(data,temp,0,data.length-1); +?Q HSIQo
} sVnq|[ /
xudZ7
private void mergeSort(int[] data, int[] temp, int l, int r) { .W9
*-
int i, j, k; C=K{;.
int mid = (l + r) / 2; -IDhK}C&T
if (l == r) {~#01p5
return; ht+wi5b
if ((mid - l) >= THRESHOLD) c>r~pY~$
mergeSort(data, temp, l, mid); b;vVlIG
else Dl\0xcE
insertSort(data, l, mid - l + 1); -EU=R_yg
if ((r - mid) > THRESHOLD) q{[y4c1bG{
mergeSort(data, temp, mid + 1, r); gtY7N>e
else 4Pf"R~&[
insertSort(data, mid + 1, r - mid); \|4F?Y
OB+ cE4$
for (i = l; i <= mid; i++) { kA2)T,s74
temp = data; HFYe@ 2r
} ljg6uz1v%
for (j = 1; j <= r - mid; j++) { `USze0"t0:
temp[r - j + 1] = data[j + mid]; ^"uD:f)
} n"~K",~P
int a = temp[l]; l r~>!O
int b = temp[r]; >r4BI}8SK<
for (i = l, j = r, k = l; k <= r; k++) { u2':~h?l
if (a < b) { c*(=Glzn
data[k] = temp[i++]; rc`I l{~k
a = temp; w8KxEV=
} else { ;?-{Uk
data[k] = temp[j--]; E1A5<^t
b = temp[j]; O|9Nl*rXz
} q}E'x/s2m
} h9nh9a(2
} hA`9[58/
O!F"w!5@
/** 0N6 X;M{zh
* @param data wSALK)T1{
* @param l _jVJkg)]
* @param i ;ae6h
[
*/ Kr4%D*
private void insertSort(int[] data, int start, int len) { daf-B-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,z((?h,nm
} e)L!4Y44K
} "`pg+t&
} zR=g<e1xe
} bDegIW/'w
JmBMc}54
堆排序: :X 1Y
N>@.(f&w
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; Aq$o&t
[2
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/** "/hLZl
* @author treeroot MGo`j:0
* @since 2006-2-2 %7Gq#rq
* @version 1.0 n*~#]%4
*/ UyMlk
public class HeapSort implements SortUtil.Sort{ '?$<k@mJW
I
wu^@
/* (non-Javadoc) PhmtCp0-7-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 "|A5>Vo
*/ C+C1(b;1
public void sort(int[] data) { 0.wN&:I8t
MaxHeap h=new MaxHeap(); L_=3`xE
_
h.init(data); ^<aj~0v
for(int i=0;i h.remove(); a
uve&y"R
System.arraycopy(h.queue,1,data,0,data.length); G<~P||Lu^
} "(a}}q 9-
)9!J
$q
private static class MaxHeap{ Y~OyoNu2
7l'1
void init(int[] data){ .4=A:9
this.queue=new int[data.length+1]; ]/mRMm9"3h
for(int i=0;i queue[++size]=data; Yp$@i20
fixUp(size); w#sP5qKv8
} S~ y.>X3"P
} z+?48}
Ap}`Q(.
private int size=0; _`9WNJiL
uVw|jj
private int[] queue; S.owVMQ
<FvljKuq+
public int get() { 0B5d $0
return queue[1]; ]mi)x63^
} }sfvzw_
M
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public void remove() { gf,[GbZ
SortUtil.swap(queue,1,size--); ZZ].h2=K
fixDown(1); wY7+E/
} 3cFvS[JG
file://fixdown u z:@
private void fixDown(int k) { MIc(B_q
int j; mZ#IP
while ((j = k << 1) <= size) { 8w3Wy<}y
if (j < size %26amp;%26amp; queue[j] j++; T(*A0
if (queue[k]>queue[j]) file://不用交换 uq]E^#^
break; \&s$?r
SortUtil.swap(queue,j,k); GS!1K(7
k = j; Uetna!ABB
} 0MOn>76$N
} wq#'o9s,
private void fixUp(int k) { =ZARJ40L
while (k > 1) { 3>^S6h}o
int j = k >> 1; u$1^=
if (queue[j]>queue[k]) 5S #6{Y =
break; \Xg`@JrTM
SortUtil.swap(queue,j,k); ;;zd/n2b
k = j; rGSi
!q
} A)f/ww)Q
} 1h?:gOig
A)TO<dl
} }ev+WIERQV
]8XIw`:f
} zS}!87r)
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SortUtil: 4"V6k4i5
S)A;!}RK6
package org.rut.util.algorithm; Ns[.guWu-
%VgK::)r
import org.rut.util.algorithm.support.BubbleSort; d#HN'(2t
import org.rut.util.algorithm.support.HeapSort; ; 5!8LmZ0#
import org.rut.util.algorithm.support.ImprovedMergeSort; ;:ocU?
import org.rut.util.algorithm.support.ImprovedQuickSort; $/P\@|MqYQ
import org.rut.util.algorithm.support.InsertSort; 8EZ,hY^
import org.rut.util.algorithm.support.MergeSort; 9CHn6 v ~)
import org.rut.util.algorithm.support.QuickSort; vP/sG5$x
import org.rut.util.algorithm.support.SelectionSort;
1);E!D[
import org.rut.util.algorithm.support.ShellSort; G)7J$4R
hmtDw,j
/** !9=Y(rb
* @author treeroot >
,P,{"
* @since 2006-2-2 f.U.(
* @version 1.0 7, :l\t
*/ :N:e3$c
public class SortUtil { BKW%/y"
public final static int INSERT = 1; S L~5[f
public final static int BUBBLE = 2; 8)&J oPN
public final static int SELECTION = 3; !Y]%U @4}
public final static int SHELL = 4; ._}Dqg$
public final static int QUICK = 5; M0uC0\'#P
public final static int IMPROVED_QUICK = 6; ~RnBs`&!
public final static int MERGE = 7; qnU$Pd
public final static int IMPROVED_MERGE = 8; lK y4Nry9
public final static int HEAP = 9; 1?#Wg>7'
X\]Dx./
public static void sort(int[] data) { qk\LfRbj
sort(data, IMPROVED_QUICK); ig:z[k?
} \&%y4=y<sE
private static String[] name={ x!9bvQT
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ut9R]01:
}; v1Jg8L=
AG,;1b,:81
private static Sort[] impl=new Sort[]{ \!'K#%]9
new InsertSort(), +Ram%"Zwh
new BubbleSort(), /Oa.@53tK6
new SelectionSort(), '5SO3/{b
new ShellSort(), %Z#[{yuFs
new QuickSort(), Ya,(J0l
new ImprovedQuickSort(), ^NOy:>
new MergeSort(), =zKbvwe%X
new ImprovedMergeSort(), }{
"RgT-qG
new HeapSort() \E2S/1p
}; A/*h[N+2!
AV["%$:
public static String toString(int algorithm){ 7:h_U9Za?$
return name[algorithm-1]; ?nx
1{2[
} Q02:qn?T
U7Pn
$l2!
public static void sort(int[] data, int algorithm) { 8*yky
impl[algorithm-1].sort(data); !fG`xZ~
} V@1K
>oc&hT
public static interface Sort { v`u>;S_
public void sort(int[] data); 7)v`l1
} q
e;O Ox
"0l7%@z*)q
public static void swap(int[] data, int i, int j) { d`4@aoM
int temp = data; qy~@cPT
data = data[j]; 9mH+Ol#(
data[j] = temp; vD4<G{
} d9uT*5f
} 9w,u4q