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。 `_` QxM
插入排序: ;*:]*|bw
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package org.rut.util.algorithm.support; >0ph9$
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import org.rut.util.algorithm.SortUtil; j3{I /m
/** s;S?;(QI
* @author treeroot XWS%zLaK
* @since 2006-2-2 j/r]wd"aUS
* @version 1.0 zQ@I}K
t
*/ m'6&9Jak
public class InsertSort implements SortUtil.Sort{ #\.,? A}9
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/* (non-Javadoc) aJ-K? xQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EN;}$jZ>47
*/ .TND a&
public void sort(int[] data) { )Ch2E|C?=8
int temp; C":32_q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gb#Cm]
} >L;eO'D
} }z _
} PE}:ybsX
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} {*0<T|<n
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冒泡排序: Xm%D><CC8"
C&*oI =6
package org.rut.util.algorithm.support; juka0/
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import org.rut.util.algorithm.SortUtil; @z4*.S&tz
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/** Pe3@d|-,MU
* @author treeroot #(#Wv?r6
* @since 2006-2-2 4e~A1-
* @version 1.0 ysxb?6
*/ ko.(pb@+
public class BubbleSort implements SortUtil.Sort{
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u37'~&o{U
/* (non-Javadoc) s+,OxRVw(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zhh2v>QOy
*/ 8/i!' 0r\
public void sort(int[] data) { M=FxB;v
int temp; z3&]%Q&
for(int i=0;i for(int j=data.length-1;j>i;j--){ ewa wL"
if(data[j] SortUtil.swap(data,j,j-1); -(bXSBs#
} =(NB%}
} -+ SF
} - }7e:!.
} ej4W{IN~:
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} l6YtEHNG
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选择排序: y#Fv+`YDl
Rn`x7(WA
package org.rut.util.algorithm.support; b$ve sJ
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import org.rut.util.algorithm.SortUtil; ;1`fC@rI
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/** "= 6_V?&w
* @author treeroot :3XA!o&.T3
* @since 2006-2-2 @wpN6 /
* @version 1.0 '(f&P=[b
*/ #E?(vA1
public class SelectionSort implements SortUtil.Sort { Mr;E<Lj ^K
VL%UR{
/* (i34sqV$m
* (non-Javadoc) Z*y`R
XE
* !V"<U2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cdas P9"1
*/ P<l&0dPO8
public void sort(int[] data) { t]y
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int temp; {5%5}[/x
for (int i = 0; i < data.length; i++) { i5Zk_-\#H
int lowIndex = i; C~nzH,5
for (int j = data.length - 1; j > i; j--) { "x=f=;
if (data[j] < data[lowIndex]) { !/}O>v~o
lowIndex = j; =Z P%mW&;}
} ?ooe'V@
} wfU7G[
SortUtil.swap(data,i,lowIndex); l>Z5 uSG
} .z)%)PVV
} w[9|cgCY
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} 0Fk5kGD,&K
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Shell排序: 56+s~hG
Y?
x,
package org.rut.util.algorithm.support; NLUT#!Gr
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import org.rut.util.algorithm.SortUtil; /tP|b_7O
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/** v1BDP<qU2
* @author treeroot jT8#C=a7
* @since 2006-2-2 e\Y*F
* @version 1.0 mz@T
*/ 3Mxp)uG/
public class ShellSort implements SortUtil.Sort{ )-0kb~;|
$nb[G$
/* (non-Javadoc) /4a._@1h[y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (8Bk;bd
*/ 19O,a#{KHf
public void sort(int[] data) { $^OvhnL/
for(int i=data.length/2;i>2;i/=2){ =+U `-J}g
for(int j=0;j insertSort(data,j,i); d]:I(9K
} rM .|1(u
} u=/{cOJI6
insertSort(data,0,1); Y%PwktQm
} ~aMlr6;
#0ETY\}ZD
/** e?7&M
* @param data c0%"&a1]]V
* @param j iVB86XZ`
* @param i wF|fK4F
*/ NWM8[dI
private void insertSort(int[] data, int start, int inc) { A6:es_
int temp; 3pv4B:0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); DE%KW:Hug
} ~-EOjX(X'E
} ]z l[H7
} 9cf:pXMi
n` xR5!de
} &d"G/6
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快速排序: 3[O=xXB
pPc TrN'
package org.rut.util.algorithm.support; -i)ZQCE
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import org.rut.util.algorithm.SortUtil; q:dHC,fO
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/** clNkph
* @author treeroot R{ a"Y$
* @since 2006-2-2 :^kZ.6Q@
* @version 1.0 ^r*r
w=
*/ -7S g62THS
public class QuickSort implements SortUtil.Sort{ Ezr:1 GJ
/lo2y?CS*
/* (non-Javadoc) UD8op]>L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xZ6~Ma2z
*/ .Nw=[
public void sort(int[] data) { W7U2MqQ
quickSort(data,0,data.length-1); #=6E\&NC
} W}5xmz
private void quickSort(int[] data,int i,int j){ T(t+
iv
int pivotIndex=(i+j)/2; A<1hOSCz\
file://swap n}'=yItVL1
SortUtil.swap(data,pivotIndex,j); VO$
iNK
byTh/ H
int k=partition(data,i-1,j,data[j]); Olh<,p+x
SortUtil.swap(data,k,j); @&1ZB6OCb:
if((k-i)>1) quickSort(data,i,k-1); AS\F{ !O
if((j-k)>1) quickSort(data,k+1,j); 5<UVD:~z
DV _2P$tT|
} DpUbzr41+k
/** VxVE
* @param data Vl:^>jTki
* @param i 1XD,uoxB
* @param j #wV8X`g
* @return :.$3vaZ@
*/ s;3= {e.
private int partition(int[] data, int l, int r,int pivot) { rNB_W.
do{ 8P1=[i]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3+ @<lVew6
SortUtil.swap(data,l,r);
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} ApAO/q
while(l SortUtil.swap(data,l,r); BDR.AZ
return l; C!fMW+C@
} ;*:Pw?'
[[;e)SoA
} P;Ga4Q.
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改进后的快速排序: BK,{N0
=5kY6%E7c
package org.rut.util.algorithm.support; Mz~M3$$9n
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import org.rut.util.algorithm.SortUtil; aFS,GiB
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/** fSs4ZXC
* @author treeroot yF"1#{*y
* @since 2006-2-2 X)7x<?DAy
* @version 1.0 0l-Ef1
*/ H;YP8MoQ
public class ImprovedQuickSort implements SortUtil.Sort { i*#-I3
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private static int MAX_STACK_SIZE=4096; >D(R YI
private static int THRESHOLD=10; +\F'iAs@
/* (non-Javadoc) A^)?Wt%*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gqu?o&>9
*/ z@B=:tf
public void sort(int[] data) { Fsif6k=4
int[] stack=new int[MAX_STACK_SIZE]; %F-ZN^R
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int top=-1; f!!V${)X
int pivot; X@K-^8
int pivotIndex,l,r; P!+'1KR
_nbBIaHN{
stack[++top]=0; `C$:Yf]%nG
stack[++top]=data.length-1; f;1K5Y
@I_8T$N=
while(top>0){ =8; {\
int j=stack[top--]; E|6VX4`+
int i=stack[top--]; 8]M_z:F7F
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pivotIndex=(i+j)/2; r=X}%~_8X
pivot=data[pivotIndex]; qoj$]
S"OR%
SortUtil.swap(data,pivotIndex,j); rdJ d#S
XT@-$%u
file://partition Gu2P\I2zx
l=i-1; &8l%T'gd
r=j; d5D$&5Ec
do{ n&-qaoNl
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3b+d"`Y^S
SortUtil.swap(data,l,r); 9Hc$G{[a
} $!8-? ?ML
while(l SortUtil.swap(data,l,r); PDrZY.-
SortUtil.swap(data,l,j); =gJb^
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if((l-i)>THRESHOLD){ $`z)~6'
stack[++top]=i; (UU(:/
stack[++top]=l-1; iy 14mh\ ~
} ?i06f,-
if((j-l)>THRESHOLD){ `eIenA
stack[++top]=l+1; rmE" rf
stack[++top]=j; .)<(Oj|4
} b+f'[;
'J6
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} 0el9&l9Ew
file://new InsertSort().sort(data); &8] d }-e
insertSort(data); HmiJ~C_v`:
} +;#Y]xy:
/** 7tcPwCc{
* @param data Kd=%tNp
*/ ],Rd ySN&
private void insertSort(int[] data) { K)\M5id]
int temp; " e}3:U5n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $D}{]MN.
} Mi/&f
} WnGGo'Z
} 2UFv9
)e a :Q?
} (Nx;0"5IX
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归并排序: Ee3hG2d`
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package org.rut.util.algorithm.support;
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@ ]/AjjLt
import org.rut.util.algorithm.SortUtil; %Mk0QKzUo
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/** #1c_ev H
* @author treeroot Vv8jEZ8
* @since 2006-2-2 V( -mD
* @version 1.0 gMaN)ESqd4
*/ U5He?
public class MergeSort implements SortUtil.Sort{ Q)LM-ZJKQ
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/* (non-Javadoc) 2EfF=Fm>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #3_*]8K.R
*/ XwlbJ=mf
public void sort(int[] data) { T`Mf]s)*
int[] temp=new int[data.length]; JXu$ew>q
mergeSort(data,temp,0,data.length-1); w\DVzeW(
} pGK;1gVj
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private void mergeSort(int[] data,int[] temp,int l,int r){ .] sf0S!
int mid=(l+r)/2; rwG CUo6Z
if(l==r) return ; 86\S?=J-b
mergeSort(data,temp,l,mid); 4qYUoCR&
mergeSort(data,temp,mid+1,r); U
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for(int i=l;i<=r;i++){ e{v=MxO=S
temp=data; ~Q>_uw}g#
} .F(i/)vaq|
int i1=l; A _XhuQB;d
int i2=mid+1; MHsc+gQiz
for(int cur=l;cur<=r;cur++){ TH$N5w%
if(i1==mid+1) $pFo Rv
data[cur]=temp[i2++]; Q~j`YmR|
else if(i2>r) W~p/,H cM
data[cur]=temp[i1++]; aOiR l,
else if(temp[i1] data[cur]=temp[i1++]; ltD37QZQ
else 3l3'bw2
data[cur]=temp[i2++]; YJl("MZ
} ,iv|Pq$!
} ")!,ZD
%o:2^5\W
} {FG|\nPw
a'jR#MQl?
改进后的归并排序: Xixqxm*8
HH@qz2 w
package org.rut.util.algorithm.support; CBD6b l|A
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import org.rut.util.algorithm.SortUtil; X0M1(BJgGo
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/** vJU*>U,
* @author treeroot K
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* @since 2006-2-2 lME)?LOI
* @version 1.0 /M*a,o
*/ zdEPDdB
public class ImprovedMergeSort implements SortUtil.Sort { p$x{yz3
" $ew~;z
private static final int THRESHOLD = 10; Iz{R}#8CZ
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/* S.d^T](
* (non-Javadoc) ?w+Ix~k
* j`*#v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,57`D'
*/ !DI{:I_h(
public void sort(int[] data) { pKjoi{
Z
int[] temp=new int[data.length]; wj1{M.EF\
mergeSort(data,temp,0,data.length-1); p IKSs<IP
} ?&^?-S% p
!grVR157P
private void mergeSort(int[] data, int[] temp, int l, int r) { fuB)qt!E
int i, j, k; CCX8>09
int mid = (l + r) / 2; V86Xg:?7
if (l == r) ocyb5j
return; %O<%UmR
if ((mid - l) >= THRESHOLD) 8B#GbS
K
mergeSort(data, temp, l, mid); M!tXN&V]
else A?oXqb
insertSort(data, l, mid - l + 1); G_dsrpI=N
if ((r - mid) > THRESHOLD) KV*xApb9y
mergeSort(data, temp, mid + 1, r); }irn'`I
else DS%\SrC
insertSort(data, mid + 1, r - mid); /De^
@5[kcU>
for (i = l; i <= mid; i++) { ]Y| 9?9d
temp = data; s #S%#LM
} vc]cNz:mQ
for (j = 1; j <= r - mid; j++) { Y&^ P"Dw
temp[r - j + 1] = data[j + mid]; 1 `7<2w
} E3*\
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int a = temp[l]; {"
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int b = temp[r]; ad_`x
for (i = l, j = r, k = l; k <= r; k++) { 2]c{P\
if (a < b) { j}AFE
data[k] = temp[i++]; W},b{NT
a = temp; ejO}t:}P
} else { zP;cTF(C
data[k] = temp[j--]; R i'L
b = temp[j]; $DP&a1'g
} Na\WZSu'"
} atW'
} xwH?0/
$7'gRb4
/** {q3H5csFq
* @param data pW]4bx@E
* @param l gXH[$guf
* @param i kGUJ9Du
*/ vw)7 !/#
private void insertSort(int[] data, int start, int len) { u?[ q=0.J7
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3F#+~^2
} C P3<1~
} er.CDKD%L
} :v L1}H<
} 1H,g=Y4f%
7 ua6l[c
堆排序: 8v)_6p(<x8
EOoZoVdzx
package org.rut.util.algorithm.support; O`$#Pg
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import org.rut.util.algorithm.SortUtil; }elH75[64
nSCWg=E^
/** R <"6ojn
* @author treeroot oQ7]=|
* @since 2006-2-2 zLD|/`
* @version 1.0 /V?H4z[G
*/ {gKN d*[*
public class HeapSort implements SortUtil.Sort{ ]}UgS+g>$
5`<eKwls
/* (non-Javadoc) s:AkkkF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V
>,Z-&.%
*/ <q,+ON\'
public void sort(int[] data) { Cj*-[EL<
MaxHeap h=new MaxHeap(); dtAbc7
h.init(data); G^(}a]>9
for(int i=0;i h.remove(); EHlytG}@
System.arraycopy(h.queue,1,data,0,data.length); a?R[J==
} Q8MS,7y/
m4[g6pNx~
private static class MaxHeap{ ?'r9"M>
hGf-q?7
void init(int[] data){ {FI\~q
this.queue=new int[data.length+1]; vSW
L$Y2
for(int i=0;i queue[++size]=data; b59{)u4F
fixUp(size); 3qQUpm+
} = zl=SLe
} ?R5'#|EyX
)n=ARDd^e
private int size=0; ?_`0G/xl
111D3
private int[] queue; $A}QY5`+~S
!eJCM`cp
public int get() { jFerYv&K~
return queue[1]; PVao
} F8+e,x
^\:2}4Uj_
public void remove() { jvzBh-!
SortUtil.swap(queue,1,size--); &&L"&Rc
fixDown(1); :ZxLJK9x1
} @1R8-aa-r
file://fixdown -s$<Op{s
private void fixDown(int k) {
0v^:
int j; T[Pa/j{
while ((j = k << 1) <= size) { s{/qS3=
if (j < size %26amp;%26amp; queue[j] j++; :o"8MZp
if (queue[k]>queue[j]) file://不用交换 dZGbC 9
break; MF[z-7
SortUtil.swap(queue,j,k); jK8'T_Pah
k = j; P.sgRsL
} k:#6^!b1
} d \>2
private void fixUp(int k) { <E\V`g
while (k > 1) { PG,U6c #
int j = k >> 1; D{'#er
if (queue[j]>queue[k]) Xev54!619
break; 4%*hGh=
SortUtil.swap(queue,j,k); /!Z^Y
k = j; eFTX6XB:i
} 6(sIYZ2yq
} S2~@nhO`U(
THhy ~wC".
} v6e%#=
g$j6n{Yl
} qvt-
/f1'm@8;
SortUtil: *rqm8z50a
GLKO]y
package org.rut.util.algorithm; 2r];V'r
zL s^,x
import org.rut.util.algorithm.support.BubbleSort; j.3o W
import org.rut.util.algorithm.support.HeapSort; # nfI%
import org.rut.util.algorithm.support.ImprovedMergeSort; SvK1.NUa
import org.rut.util.algorithm.support.ImprovedQuickSort; ke/_k/
import org.rut.util.algorithm.support.InsertSort; W'_/6_c$!
import org.rut.util.algorithm.support.MergeSort; r@T| e
import org.rut.util.algorithm.support.QuickSort; Su8'$CFz$.
import org.rut.util.algorithm.support.SelectionSort; f|xLKcOP
import org.rut.util.algorithm.support.ShellSort; =hw^P%Zn
9u wL{P&
/** U
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* @author treeroot [V@yRWI
* @since 2006-2-2
"7?js $
* @version 1.0 OoP@-D"e
*/ {U
<tc4^
public class SortUtil { rbk<z\pc
public final static int INSERT = 1; !Y;<:zx5
public final static int BUBBLE = 2; "+iAd.qd
public final static int SELECTION = 3; {Iy7.c8S
public final static int SHELL = 4; s?O&ZB2GM[
public final static int QUICK = 5; ;mO,3dV
public final static int IMPROVED_QUICK = 6; ]5|z3<K^
public final static int MERGE = 7; Goj4`Hc
public final static int IMPROVED_MERGE = 8; j$eCe<.3
public final static int HEAP = 9; gJ\%>r7h
Ugi5OKdj7)
public static void sort(int[] data) { RT"O;P
sort(data, IMPROVED_QUICK); +0pW/4x
} PW_`qP:
private static String[] name={ i+~QDo(Pi
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" I^fPk
}; T2bnzIi
) Ypz!
private static Sort[] impl=new Sort[]{ ItK
new InsertSort(), X*Z5 P
new BubbleSort(), J5T=!wF (
new SelectionSort(), tE!'dpG5)
new ShellSort(), 0&`}EXe<f
new QuickSort(), #t5juX9Ho9
new ImprovedQuickSort(), b*9e1/]
new MergeSort(), <`JG>H*B6
new ImprovedMergeSort(), ,L-C(j
new HeapSort() 3 .)_uo0;o
}; v7@H\x*
Qp&?L"U)2
public static String toString(int algorithm){ !b%,'f y)
return name[algorithm-1]; ||a`fH
} T|f_~#?eV
a!.!2a&t
public static void sort(int[] data, int algorithm) { g)M#{"H
impl[algorithm-1].sort(data); w2)/mSnu
} 5X;?I/9
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public static interface Sort { h}6b&m
public void sort(int[] data); ;a{rWz1Wm
} ,cQ)cY[
#D:RhqjK
public static void swap(int[] data, int i, int j) { (^S5Sc=
int temp = data; `9EVB;
data = data[j]; L;C|ow^c
data[j] = temp; _z:Qhe
} $Z7:#cZ Y
} |B1Af