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。 O e0KAn
插入排序: /&y,vkZTT
(, ;MC/l
package org.rut.util.algorithm.support; ][s*~VK;
>b[4
import org.rut.util.algorithm.SortUtil; !pE>O-| K
/** q8&4=eV\A
* @author treeroot |DdW<IT`0
* @since 2006-2-2 .&aVx]
* @version 1.0 UHTb61Gs
*/ ~hxeD" w
public class InsertSort implements SortUtil.Sort{ C.DoXE7
V>~*]N^f
/* (non-Javadoc) q>Dr)x)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TXY
*/ AX!Md:s
public void sort(int[] data) { /3xFd)|Ds
int temp; 7$E2/@f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %3#b6m~
} CNpCe-%&
} A5(kOtgiT
} SLbavP#G
|V*e2w
} *<#]&2I
*X"F: 7
冒泡排序: 'Q^G6'(SaK
+'{:zN5m
package org.rut.util.algorithm.support; z{<q0.^EFh
_.s\qQ
import org.rut.util.algorithm.SortUtil; 72BzvY.
+4p2KYO
/** lcuH]z
* @author treeroot {Hrr:hC
* @since 2006-2-2 OP\^c
* @version 1.0 O~c+$(
*/ tPMgZ
public class BubbleSort implements SortUtil.Sort{ r;5 AY
]VO,}
`
/* (non-Javadoc) 0^|$cvYiL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }b\ipA,~
*/ w|3fioLs
public void sort(int[] data) { x&6i@ Jl
int temp; 7D9h;gsP
for(int i=0;i for(int j=data.length-1;j>i;j--){ A=l?IC@O
if(data[j] SortUtil.swap(data,j,j-1); AH ?MJKY@Z
} `zV-1)=
} MXu+I,y*
} E(L^hZMc
} !E(J
]a
]"7El;2z
} v@<lEG#$"|
Y
}g6IK}
选择排序: P89Dg/P
:W1tIB
package org.rut.util.algorithm.support; )G F
hyr5D9d
import org.rut.util.algorithm.SortUtil; _^,[wD
RvZryA*vu
/** 'ra_Zg[j
* @author treeroot OHXeqjhy
* @since 2006-2-2 `04Y ;@w
* @version 1.0 $4fjSSB~
*/ $;g%S0:3)
public class SelectionSort implements SortUtil.Sort { ( kD?},Z
_j?=&tc
/* tL
9e~>,`
* (non-Javadoc) 55)ep
* p-ii($~}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v6,
o/3Ex
*/ EJ[iOYx
public void sort(int[] data) { :EmMia-)J
int temp; Ky{I&}+R|
for (int i = 0; i < data.length; i++) { :O_<K&
int lowIndex = i; Yru1@/;
for (int j = data.length - 1; j > i; j--) { #0$eTdx#
if (data[j] < data[lowIndex]) { P St|!GST
lowIndex = j; TBLk+AR
} ;/]c^y
}
=z7Ay
SortUtil.swap(data,i,lowIndex); n ;$}pg~
} pRyS8'
} ::h02,y;1%
=,1zl}PR
} 5w-G]b
I.n{ "=$B@
Shell排序: S4AB tKG
ZYp-dlEXq
package org.rut.util.algorithm.support; :/?R9JVI
.<|4PG
import org.rut.util.algorithm.SortUtil; Y$DgL
h
*1 eTf
/** '3kL=(
* @author treeroot aABE= 9Y
* @since 2006-2-2 we@En
.>f
* @version 1.0 $f@-3/V6{
*/ "NI>HO.U
public class ShellSort implements SortUtil.Sort{ d4rJ?qw
_}%#Yz
/* (non-Javadoc) */@bNT9BgO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XVK[p=cIL
*/ c`[uQXv
public void sort(int[] data) { (/UMi,Ho
for(int i=data.length/2;i>2;i/=2){ BsG[#4KM:
for(int j=0;j insertSort(data,j,i); KARQKFp!C>
} LZ<(:S
} ur_"m+
insertSort(data,0,1); /Gu2@m[r
} )6S}O*
1
{;rpgc
/** (VF4]
* @param data jjlCi<9CQ^
* @param j ;`Ch2b1+
* @param i $/sZYsN~T
*/ Q\th8/ /
private void insertSort(int[] data, int start, int inc) { zAdVJ58H
int temp; ?
Gu_UW
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _O71r}4
} 2ZFKjj
} T<~[vjA
} p[+me o
LFry?HO,D
} Rhxm)5 +
loVvr"&g
快速排序: XzwQ,+IAr
Zvw3C%In
package org.rut.util.algorithm.support; 9MlfZsby
\7?MUa.4
import org.rut.util.algorithm.SortUtil; AZ@Zo'
Bwvc@(3v
/** [Z&s0f1Qb
* @author treeroot ;eSf4_~
* @since 2006-2-2 h]z|OhG
* @version 1.0 {xx;zjt%}}
*/ SNV+.xN
public class QuickSort implements SortUtil.Sort{ gKH"f%lK
GHrT?zEX
/* (non-Javadoc) z Clm'X/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S:T>oFUot
*/ n`2"(7Wj
public void sort(int[] data) { 5/VB'N#7s
quickSort(data,0,data.length-1); nylIP */
} A>,fG9pR
private void quickSort(int[] data,int i,int j){ Xg)FIaw]eT
int pivotIndex=(i+j)/2; w9h5f
file://swap w)c#ZJHG
SortUtil.swap(data,pivotIndex,j); +4vX+;: br
&(1NOyX&
int k=partition(data,i-1,j,data[j]); G
U/k^Qy
SortUtil.swap(data,k,j); NjMLq|X
if((k-i)>1) quickSort(data,i,k-1); H[yLlv
if((j-k)>1) quickSort(data,k+1,j); Sgk{NM7|k
%R5MAs&-5
} -]MP,P%
/** tm#y`1-
* @param data JS.'v7
* @param i 0-O.*Q^
* @param j 2xxwQwg8
* @return \O4=mJ
*/ n;Wf|>
private int partition(int[] data, int l, int r,int pivot) { {oC69n:
do{ K#yH\fn8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R')GQ.yYq
SortUtil.swap(data,l,r); +*~3"ww<
} 87*[o
while(l SortUtil.swap(data,l,r); `Wt~6D
e
return l; Z
' 96d
} Q%h
o[KU
/{}
]Hu
} _Dt TG<E
[vT,zM
改进后的快速排序: N8Q{4c
=!Cvu.~},
package org.rut.util.algorithm.support; ]8z6gDp
' vClZGQ1
import org.rut.util.algorithm.SortUtil; mTbPzZ4
LKG|S<s
/** tH!z7VZ
* @author treeroot RH 0a\RC!G
* @since 2006-2-2 he6)
L6T
* @version 1.0 Ct33S+y
*/ '0?E|B]Cp%
public class ImprovedQuickSort implements SortUtil.Sort { bHG>SW\]`?
O&%T_Zk@@
private static int MAX_STACK_SIZE=4096; =ZL20<TeH
private static int THRESHOLD=10; mw%_yDZ{
/* (non-Javadoc) t:n|0G(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .
2Q/D?a
*/ Q&;qFv5-l
public void sort(int[] data) { Q:=/d$*xd
int[] stack=new int[MAX_STACK_SIZE]; ~+ur*3X
/PS]AM
int top=-1; 0:S)2"I58p
int pivot; j+_75t`AZ
int pivotIndex,l,r; *mtv[
r4zS, J;,
stack[++top]=0; GT0'bge
stack[++top]=data.length-1; 351'l7F\
v#G ^W
while(top>0){ $cCB%}
int j=stack[top--]; q>Y[.c-
int i=stack[top--]; 'IszS!kY
mY9K)]8
pivotIndex=(i+j)/2; } 4^UVdz
pivot=data[pivotIndex]; >{8H==P
3 g&mND
SortUtil.swap(data,pivotIndex,j); 6dlPS{H#U
=jh:0Q<43+
file://partition upKrr
l=i-1; 548BM^^"r
r=j; W1(ziP'6
do{ djM=QafB:C
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "yk%/:G+
SortUtil.swap(data,l,r); 2
{0VyLx
} 06
1=pV$CJ
while(l SortUtil.swap(data,l,r); QI<3N
SortUtil.swap(data,l,j); WDR!e2G
R~([
if((l-i)>THRESHOLD){ C]cw@:o%
stack[++top]=i; >i<-rO>kN
stack[++top]=l-1; WdnP[x9
} ozG:f*{T
if((j-l)>THRESHOLD){ eU0-_3gN_
stack[++top]=l+1; 9IV WbJ
stack[++top]=j; ?i"FdpW
} pj6Cvq4bD
%cL:*D4oz
} TMBdneS-s
file://new InsertSort().sort(data); /0(KKZ)
insertSort(data); RB!E>]
} *qBZi;1
/** cx)
EFy.
* @param data [OSUARm
v
*/ 29oEkaX2o
private void insertSort(int[] data) { ]Re<7_xt
int temp; ?0X.Ith^.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
lNw?}H
} &rubA
} &9>d
} }z#8vE;
'cv/"26#
} \;<Y/sg
DSp@
归并排序: >%,tyJ~
u1l#k60
package org.rut.util.algorithm.support; 3-5lO#
Heu@{t.[!D
import org.rut.util.algorithm.SortUtil; xh$[E&2u
~c"c9s+o
/** y-mmc}B>N
* @author treeroot ej `$-hBBV
* @since 2006-2-2 t~Ax#H
* @version 1.0 &XP 0
*/ kCV OeXv
public class MergeSort implements SortUtil.Sort{ DQd&:J@?
8*X8U:.0o
/* (non-Javadoc) ewY X \
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ececN{U/
*/ "fdG5|NJe
public void sort(int[] data) { {H74`-C)W
int[] temp=new int[data.length]; J4<*KL~a
mergeSort(data,temp,0,data.length-1);
Nnw iH
} ;N|6C+y
-|5&3HVz
private void mergeSort(int[] data,int[] temp,int l,int r){ J$oJ
int mid=(l+r)/2; aryr
if(l==r) return ; ak zb<aT
mergeSort(data,temp,l,mid); ~JJv 2
mergeSort(data,temp,mid+1,r); *zcH3a,9"x
for(int i=l;i<=r;i++){ `/O_6PQ}
temp=data; NbdaP{{
} l;4F,iI
int i1=l; ?(z3/"g]
int i2=mid+1; be_t;p`3
for(int cur=l;cur<=r;cur++){ _]g6
3q
if(i1==mid+1) :n=+$Dq
data[cur]=temp[i2++]; R0>L[1o
else if(i2>r) -9mh|&z`
data[cur]=temp[i1++]; BshS@"8r
else if(temp[i1] data[cur]=temp[i1++]; XcXd7e
else rlq8J/0/+
data[cur]=temp[i2++]; .dV!d u
} O;~1M3Ii
} *7ox_ R@
P&K~wP]
} z|Xl%8
LS`Gg7]S
改进后的归并排序: oKUJB.PF
hn-S$3')`
package org.rut.util.algorithm.support; ;rX4${h
<_5z^@N3$
import org.rut.util.algorithm.SortUtil; ?AEpg.9R-
^t"\PpmK<d
/** <m!\Ma
* @author treeroot @m6E*2Gg
* @since 2006-2-2 _<8n]0lX3
* @version 1.0 \*7Tj-#
*/ `k+k&t
public class ImprovedMergeSort implements SortUtil.Sort { lH[N*9G(
e>[QF+e)y
private static final int THRESHOLD = 10; %}@^[E)
#/aWGx_
/* j JW0a\0
* (non-Javadoc) ^U52
*6
* S}>rsg!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B}vI<?c
*/ i<l)To -
public void sort(int[] data) { g$ h!:wW
int[] temp=new int[data.length]; X- zg
mergeSort(data,temp,0,data.length-1); _.j KcDf
} j%lW+[%
iVD9MHT4
private void mergeSort(int[] data, int[] temp, int l, int r) { ;fuy}q8@7
int i, j, k; hod|o1C&
int mid = (l + r) / 2; #8'%CUF*<8
if (l == r) OHB!ec6W
return; oD.f/hi0|
if ((mid - l) >= THRESHOLD) Fw|5A"9'a'
mergeSort(data, temp, l, mid); iS"rMgq
else x`$4
insertSort(data, l, mid - l + 1); U7OW)tUf
if ((r - mid) > THRESHOLD) ~
60J
mergeSort(data, temp, mid + 1, r); )Aj~ xA
else %P?W^mI
insertSort(data, mid + 1, r - mid); `H\^#Zu
A&z
for (i = l; i <= mid; i++) { :
"UBeo<Z
temp = data; Cu}Rq!9i
} `.n[G~*w~1
for (j = 1; j <= r - mid; j++) { E@?jsN7
temp[r - j + 1] = data[j + mid]; "`lRX
} # H4dmnV
int a = temp[l]; b747 eR 7E
int b = temp[r]; lGxG$0`;;
for (i = l, j = r, k = l; k <= r; k++) { 46*?hA7@r(
if (a < b) { "kMpa]<c-6
data[k] = temp[i++]; bH&[O`vf
a = temp; #CM2FN:W
} else { h5F1mr1Sa
data[k] = temp[j--]; @+\OoOK<L
b = temp[j]; $v+g3+7
} e%8K
A#DX
} 3o6N&bQ b
} Qq5)|m
^K3{6}]
/** Q?vGg{>
* @param data ifuVV Fov
* @param l 8Y:bvs.j
* @param i C6GYhG]
*/ !x>P]j7A}Y
private void insertSort(int[] data, int start, int len) { +&|WC2#
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zF{5!b
} srUpG&Bcx
} K{N#^L!
} KnlVZn[3t
} /<GygRs
qUCiB}
堆排序: GeE|&popO
B;^7Yu0,
package org.rut.util.algorithm.support; oSxHTbp?
.a$][Jny
import org.rut.util.algorithm.SortUtil; p3X>
TzVNZDQ`Jl
/** !IP[C?(nB
* @author treeroot ^/c&Ud
* @since 2006-2-2 =8[HC}s|$
* @version 1.0 aVd{XVE
*/ ~W!sxM5(*
public class HeapSort implements SortUtil.Sort{ LTrn$k3}
1'M<{h<sP
/* (non-Javadoc) }nuhLt1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \07
s'W U
*/ V"gnG](2l
public void sort(int[] data) { Si!W@Jm
MaxHeap h=new MaxHeap(); \3x,)~m
h.init(data); 6Vi #O^>
for(int i=0;i h.remove(); iugTXZ(
System.arraycopy(h.queue,1,data,0,data.length); Z?X
^7<
} !DD|dVA{
B\9ymhx;g%
private static class MaxHeap{ 6:J @
xj(&EGY:
void init(int[] data){ \#
this.queue=new int[data.length+1]; ?$9C[Kw`
for(int i=0;i queue[++size]=data; co#%~KqMu
fixUp(size); Z{&PKS
} ^BW V6
} s\_
,aI
Ry tQNwv3
private int size=0; qd"*Td
P5kkaLzG
private int[] queue; zS]Yd9;X1
B$aboL2
public int get() {
!1;DRF
return queue[1]; az\;D\\
} V\^?V|
19h8p>Sx0
public void remove() { F(:+[$)
SortUtil.swap(queue,1,size--); `
Y"Rh[C
fixDown(1); "C%;9_ig$
} o^2.&e+dQ
file://fixdown %/jmQ6z^
private void fixDown(int k) { Fod2KS;g
int j; Jy{A1i@4~s
while ((j = k << 1) <= size) { >(p "!
if (j < size %26amp;%26amp; queue[j] j++; ~%m-}Sxc
if (queue[k]>queue[j]) file://不用交换 2 ES .)pQ
break; -TSn_XE
SortUtil.swap(queue,j,k); >cQ*qXI0
k = j; qbpvTTF
} O]90F
} USfOc
private void fixUp(int k) { Z'hW;^e%_z
while (k > 1) { BB>3Kj:|
int j = k >> 1; e=QnGT*b5
if (queue[j]>queue[k]) /\(0@To
break; mq do@
SortUtil.swap(queue,j,k); tNoo3&
k = j; /EA4-#uw
} =&< s*-l[
}
&CG3_s<2
\@3i=!
} +kmPQdO;*/
?&j[Rj0pH
}
JstX# z
6uOR0L
SortUtil: 0'% R@|
[_#9PH33
package org.rut.util.algorithm; O\-cLI<h2
48Z{wV,
import org.rut.util.algorithm.support.BubbleSort; kbOdg:
import org.rut.util.algorithm.support.HeapSort; LEKN%2
import org.rut.util.algorithm.support.ImprovedMergeSort; WEZ(4ah
import org.rut.util.algorithm.support.ImprovedQuickSort; s'J8E+&5
import org.rut.util.algorithm.support.InsertSort; `b+f^6SJn
import org.rut.util.algorithm.support.MergeSort; Q9]7.^l
import org.rut.util.algorithm.support.QuickSort; <G/O!02
import org.rut.util.algorithm.support.SelectionSort; eOE7A'X
import org.rut.util.algorithm.support.ShellSort; P
BpjE}[Q
`[2nxP>w`
/** H'P1EZtq
* @author treeroot z<hy#BIjnd
* @since 2006-2-2 [}N?'foLb
* @version 1.0 ]+{Cy\*kR
*/ bo4 :|Z
public class SortUtil { ebcGdC/%>
public final static int INSERT = 1; cL7je
public final static int BUBBLE = 2; p9y
"0A|
public final static int SELECTION = 3; {|O8)bW'
public final static int SHELL = 4; _A;jtS)SY
public final static int QUICK = 5; l%oie1g l
public final static int IMPROVED_QUICK = 6; ]Jq1b210
public final static int MERGE = 7; eh&? BP?
public final static int IMPROVED_MERGE = 8; mTwz&N\
public final static int HEAP = 9; %e+hM $Q
~6Vs>E4G
public static void sort(int[] data) { b`usRoD{+
sort(data, IMPROVED_QUICK); g>CF|Wj
} i-vhX4:bd
private static String[] name={ x~?,Wv|cm
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" x@;XyQq
}; =\eM
-"r
!-m(1
private static Sort[] impl=new Sort[]{ ;@Alr?y
new InsertSort(), MMN2XxS
new BubbleSort(), bW7tJ
new SelectionSort(), {+0]diD
new ShellSort(), ICN>8|O`&
new QuickSort(), }3!83~Qbx
new ImprovedQuickSort(), s*>s;S?{|
new MergeSort(), *!ZU"q}i
new ImprovedMergeSort(), k3da*vwE
new HeapSort() ><mZOTn e;
}; TxoMCN?7c
be |k"s|6)
public static String toString(int algorithm){ xa[<k>r3
return name[algorithm-1]; (_^g:>)Cs
} hc4<`W{
b'p bf
public static void sort(int[] data, int algorithm) { S#8wnHq
impl[algorithm-1].sort(data); Xai ,
} CS)&A4`8
/JaH
public static interface Sort { %M2.h;9]*\
public void sort(int[] data); 2l}FOdq
} v7&e,:r2E@
|"8Az0[!
public static void swap(int[] data, int i, int j) { $W<H[k&(B
int temp = data; tO~DA>R
data = data[j]; M}k )Ep9
data[j] = temp; mL?9AxO
} <N}UwB&
} "WdGY*r