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。 /C8(cVNZ
插入排序: ;/{Q4X{
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package org.rut.util.algorithm.support; 1}q[8q
vrW9<{
import org.rut.util.algorithm.SortUtil; k0D&F;a%
/** !xqG-rd
'
* @author treeroot kAk,:a;P
* @since 2006-2-2 O,1u\Zy/
* @version 1.0 VZlvmN
*/ SS~Txt75m
public class InsertSort implements SortUtil.Sort{ yxQAO_C
=v5(*$"pd"
/* (non-Javadoc) ^lMnwqx<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (U dDp"/
*/ IA!ixabG
public void sort(int[] data) { !`#9#T|
int temp; J2[QHr&tn
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qP<,"9!I
} \M532_w
} UZX)1?U
} >qUO_>
Tx_(^K
} Iq}h}Wd
b~1p.J4
冒泡排序: YL=k&QG
!<6wrOMa O
package org.rut.util.algorithm.support; +m7x>ie)
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import org.rut.util.algorithm.SortUtil; $xZk{ rK
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/** SCH![Amq
* @author treeroot o%9>elOju
* @since 2006-2-2 _0j}(Q>|H#
* @version 1.0 S+>]8ZY
*/ 2nieI*[
public class BubbleSort implements SortUtil.Sort{ fY"28#
EhUy7b,1_
/* (non-Javadoc) CijS=-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n*6s]iG
V
*/ `U1%d7[vY
public void sort(int[] data) { kL|Y-(FPo%
int temp; v_@_J!s
for(int i=0;i for(int j=data.length-1;j>i;j--){ M>J ADt_]
if(data[j] SortUtil.swap(data,j,j-1); qtH&]Suu,
} HgBg,1
} 9f6TFdUi"y
} *(MvNN*
} *_wef/==
Q%xY/xH]
} )|a9Z~#x
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选择排序: XZ&v3ul
Yr= mLT|JN
package org.rut.util.algorithm.support; 1;gSf.naG
2!otVz!Mh
import org.rut.util.algorithm.SortUtil; ">QY'r
uWInx6p
/** QPcB_wUqu
* @author treeroot >oNk(.
%
* @since 2006-2-2 ) IhY&?jk?
* @version 1.0 GDB>!ukg
*/ %UJ4wm
public class SelectionSort implements SortUtil.Sort { )x7hhEk=^
*vO'Z &
/* oX4uRc7wR
* (non-Javadoc) e,*[5xQ
* ;2|H6IN"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 19u?^w
*/ Aii[=x8
public void sort(int[] data) { .KsvRx
int temp; ,6S8s
for (int i = 0; i < data.length; i++) { Fb'wC
int lowIndex = i; u"gp">
for (int j = data.length - 1; j > i; j--) { `j![
if (data[j] < data[lowIndex]) { *a%PA(%6
lowIndex = j; ,s76]$%4
} tp^'W7E
} _D4}[`
SortUtil.swap(data,i,lowIndex); S%fBt?-Cm
} z.^
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} k-e@G'
T_Y }1n|7[
} {@$3bQ
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Shell排序: //@=Q!MW
m6cW
package org.rut.util.algorithm.support; 7$=@q|$
+3>4 ?,^g
import org.rut.util.algorithm.SortUtil; ;LE
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/** 3T/j5m}+!
* @author treeroot $\!;*SSj
* @since 2006-2-2 <Y2!c,"
* @version 1.0 fLoVcl
*/ <6~;-ZQY
public class ShellSort implements SortUtil.Sort{ \pGO}{3e*
Z5[:Zf?h7J
/* (non-Javadoc) LeyDs>!0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Q -F
*/ U9 *2< c
public void sort(int[] data) { \W^+vuD8
for(int i=data.length/2;i>2;i/=2){ N=wy)+
for(int j=0;j insertSort(data,j,i); y}HC\A77uD
} n5/Tn7hY
} ?|GxVOl
insertSort(data,0,1); ^b %8_?2m
} J"%}t\Q
T_[\(K`w!
/**
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* @param data & }}WP:U
* @param j :Qo
* @param i 30E v"
*/ ji
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private void insertSort(int[] data, int start, int inc) { 8k^y.B
int temp; ~{G:,|`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c.Z4f7
} S\;.nAR
} \=_q{
} ug"<\"
H;|:r[d!
} |uBC0f
a&"*UJk<?
快速排序: H`lD@q'S
"@w%TcA
package org.rut.util.algorithm.support; oD@jtd>b%
rI+w1';C1
import org.rut.util.algorithm.SortUtil; D])YP0|}
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/** Pm(:M:a
* @author treeroot =Fy8rTdk6r
* @since 2006-2-2 8I0Tu
* @version 1.0 *yq]
*/ qU*&49X
public class QuickSort implements SortUtil.Sort{ ]\,uF8gg)
UH-uU~
/* (non-Javadoc) s[@>uP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2\B9o `Y
*/ A=d$ir
K[
public void sort(int[] data) { n o+tVm|
quickSort(data,0,data.length-1); )2Ru!l#
} YQdX>k
private void quickSort(int[] data,int i,int j){ R 0HVLQI
int pivotIndex=(i+j)/2; .]s(c!{y
file://swap 2RUR=%C
SortUtil.swap(data,pivotIndex,j); EvQwGt1)P
ZNpExfGEU
int k=partition(data,i-1,j,data[j]); yPh2P5}H>
SortUtil.swap(data,k,j); Ca@=s
if((k-i)>1) quickSort(data,i,k-1); hdJwNmEA>
if((j-k)>1) quickSort(data,k+1,j); 'F"Y?y:!
uE#,c\[8
} Jhy
t)@7/,
/** 6.h
* @param data Df:7P>
* @param i A
a} o*
* @param j kefv=n*]l
* @return I#E(r>KW*
*/ Vy^yV|`v
private int partition(int[] data, int l, int r,int pivot) { 2, "q_d'V
do{ ,,gLrVk
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vF6*c
SortUtil.swap(data,l,r); vd7N&c9
} 0$L0fhw.
while(l SortUtil.swap(data,l,r); !_-sTZ
return l; ;i9<y8Dha
} Vm;Qw
6$fnQcpJ
} ~J>gVg%66
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改进后的快速排序: b}Hl$V(uD
1m<?Q&|m$
package org.rut.util.algorithm.support; G k"L%Zt)
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import org.rut.util.algorithm.SortUtil; UcLNMn|
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/** c\)&yGE
* @author treeroot cP@F
#!2
* @since 2006-2-2 PL9eU y
* @version 1.0 r ctSS:1
*/ s|gD
public class ImprovedQuickSort implements SortUtil.Sort { u2-@?yt
]r6BLZ[ %
private static int MAX_STACK_SIZE=4096; leES YSY:
private static int THRESHOLD=10; ke9QT#~p!-
/* (non-Javadoc) ;j>Vt?:Pw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v=.z|QD^1
*/ grCO-S|j^
public void sort(int[] data) { (!VMnLlXRK
int[] stack=new int[MAX_STACK_SIZE]; xa{<R+LR
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int top=-1; I51oG:6fR?
int pivot; J(EaE2
int pivotIndex,l,r; v-;XyVx
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stack[++top]=0; rI<nUy P?
stack[++top]=data.length-1; ?wLdW1&PpX
:Dk@?o@2;C
while(top>0){ Y0PGT5].@'
int j=stack[top--]; E +Ujpd
int i=stack[top--]; OS"{"P
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pivotIndex=(i+j)/2; 6i]Nr@1C
pivot=data[pivotIndex]; k~1j/VHv
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SortUtil.swap(data,pivotIndex,j); j(%gMVu
S?Bc~y
file://partition lP@)
l=i-1; (~ ]g,*+
r=j; xA&
do{ pG!(6V-x<E
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); nrTv=*tDj
SortUtil.swap(data,l,r); h
eE'S/
} WjY{rM,K
while(l SortUtil.swap(data,l,r); vr{'FMc
SortUtil.swap(data,l,j); fwi};)K
1C0Y0{6,
if((l-i)>THRESHOLD){ !_U37Uj<m
stack[++top]=i; [arTx^
stack[++top]=l-1; #ox9&
} 1iNsX\M
if((j-l)>THRESHOLD){ oNuPP5d[]
stack[++top]=l+1; \6SMn6a4
stack[++top]=j; PG6[lHmi
} X(GmiH /E
Mhe|eD#)
} (!ZQ
file://new InsertSort().sort(data); rb:<N%*t
insertSort(data); 1KTabj/C
} |jahpji6
/** a{]g+tGH
* @param data l_c^ .D
*/ " WYA
private void insertSort(int[] data) { `E} p77
int temp; <$jKy 3@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;.ysCF
} Pgn_9Y?<
} \}$*}gW[}
} RDs,sj/Y9?
Y&vHOA
} mb0n}I_AC
Ky[bX
归并排序: kqVg2#<@M
[3j$ 4rP
package org.rut.util.algorithm.support; [8F
\;
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import org.rut.util.algorithm.SortUtil; M`0(!Q}
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/** F+ffl^BQ
* @author treeroot ";PG%_(
* @since 2006-2-2 AH&9Nye8
* @version 1.0 Md8(`@`o
*/ |Du,UY/
public class MergeSort implements SortUtil.Sort{ d?:`n9`
r0F_;
/* (non-Javadoc) RVc)")
hQj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q0V^PDF
*/ 0jR){G9+
public void sort(int[] data) { T>#TDMU#Fm
int[] temp=new int[data.length]; Y 3o^Euou
mergeSort(data,temp,0,data.length-1); +w "XNl
} {]&R8?%
JAc@S20v\
private void mergeSort(int[] data,int[] temp,int l,int r){ .Qd}.EG
int mid=(l+r)/2; R{*_1cyW
if(l==r) return ; DVObrL)znL
mergeSort(data,temp,l,mid); S?*^>Y-e;
mergeSort(data,temp,mid+1,r); z*6$&sS\>
for(int i=l;i<=r;i++){ ZV!R#Xv
temp=data; 'sj9[o@]
} QTVa
int i1=l; 3PsxOb+
int i2=mid+1; R=`U 4Ml;
for(int cur=l;cur<=r;cur++){ 0/ut:RV0
if(i1==mid+1) QT#b>xV)1
data[cur]=temp[i2++]; y0,Ft/D
else if(i2>r) #hIEEkCp +
data[cur]=temp[i1++]; 5pO]vBT
else if(temp[i1] data[cur]=temp[i1++]; k_]\(myq
else 5B%w]n
data[cur]=temp[i2++]; GGCqtA^@7d
} F(deu^s%{
} %fHH{60
$zdd=.!KiK
} T`uDlo
wi>DZkR
改进后的归并排序: SijtTY#r
1{^CfamF
package org.rut.util.algorithm.support; [!W5}=^H
R;WW
f.#
import org.rut.util.algorithm.SortUtil; Q-[3j
a;%I\w;2
/** w{3ycR
* @author treeroot u[)_^kIE(n
* @since 2006-2-2 /K f L+"^|
* @version 1.0 iBucT"d]
*/ A*hZv|$0
public class ImprovedMergeSort implements SortUtil.Sort { T-^0:@5o9
+ a-D#^2;
private static final int THRESHOLD = 10; 8`}l\ Y
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/* WhH!U0
* (non-Javadoc) 0}B?sNr
* Q.yb4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k=e`*LB\
*/ &1P(O\d
public void sort(int[] data) { G(3;;F7"
int[] temp=new int[data.length]; )`^ /(YG
mergeSort(data,temp,0,data.length-1); byafb+x
} G%;kGi`m
MZ WmlJ
private void mergeSort(int[] data, int[] temp, int l, int r) { x.ba|:5
int i, j, k; z?)He)d
int mid = (l + r) / 2; /N>} 4Ay
if (l == r) {#N%Bq}
return; }B`Ku5 M
if ((mid - l) >= THRESHOLD)
*,17x`1e
mergeSort(data, temp, l, mid); t ^m~
else >Co)2d]
insertSort(data, l, mid - l + 1); "CMucK
if ((r - mid) > THRESHOLD) c+8V|'4
mergeSort(data, temp, mid + 1, r); "e@n:N!
else 7{4w2)
insertSort(data, mid + 1, r - mid); YGETMIT(
H37QgApB
for (i = l; i <= mid; i++) { e gI&epN
temp = data; 19p8B&
} uxb:^d?D!
for (j = 1; j <= r - mid; j++) { :5jexz."M
temp[r - j + 1] = data[j + mid]; #BsW
} P].eAAXnP
int a = temp[l]; aZ6'|S;
int b = temp[r]; <6/= y1QC)
for (i = l, j = r, k = l; k <= r; k++) { 0'`S,
if (a < b) { Ps3~{zH`
data[k] = temp[i++]; `Ug tvo
a = temp; g8RPHjvZ
} else { W!91tzs:
data[k] = temp[j--]; uaaf9SL?
b = temp[j]; ?_%u)S*g
} ywOmQcZ
} QjJfE<h
} 9Sz7\W0
*}w+68eO
/** TdFT];:
* @param data wG8
nw;
* @param l &))\2pl
* @param i |NJ}F@t/5
*/ vQgq]mA?
private void insertSort(int[] data, int start, int len) { w^Ag]HZN
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6Hk="$6K
} 8eN7VT eb
} \x(^]/@
} hO
\/
} $Asr`Q1i
g5Hr7Km
堆排序: *C7F2o
R5(F)abi
package org.rut.util.algorithm.support; '#q4Bc1
bY)#v?
import org.rut.util.algorithm.SortUtil;
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Zj!Abji=O
/** FshC )[w,
* @author treeroot 2 x32U
MD
* @since 2006-2-2 _~&9*D$
{>
* @version 1.0 DZk1ZLz
*/ lL0M^Nv
public class HeapSort implements SortUtil.Sort{ m(_9<bc>
R%"K
/* (non-Javadoc) Vm,,uF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OhFW*v
*/ "(f`U.
public void sort(int[] data) { 8{
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MaxHeap h=new MaxHeap(); psUE!~9,
h.init(data); A[)C:q,
for(int i=0;i h.remove(); %j5ywr:
System.arraycopy(h.queue,1,data,0,data.length); m*Cu-6&qd
} o2naVxetE
t7*#[x)a
private static class MaxHeap{ 3{ "O,h
Ryv_1gR!
void init(int[] data){ 0` 5e
this.queue=new int[data.length+1]; u-:Ic.ZV
for(int i=0;i queue[++size]=data; 'SV7$,mK@
fixUp(size); 2 hq\n<
} cP rwW6
} IZrk1fh
t,<UohL|z
private int size=0; 5JSrrpGr
x)oRSsv!Tr
private int[] queue; "@yyXS
r
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public int get() { J'Sm0
return queue[1]; :mZYS4L~
} Bm /YgQi
JN(-.8<
public void remove() { H
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SortUtil.swap(queue,1,size--); ,H[SI0];
fixDown(1); ^ R~~L
} <[i}n55
file://fixdown ahGT4d`)9
private void fixDown(int k) { /XbW<dfl
int j; c^9tYNn
while ((j = k << 1) <= size) { *C2R`gpBI
if (j < size %26amp;%26amp; queue[j] j++; /X#z*GX
if (queue[k]>queue[j]) file://不用交换 \TbVS8e^
break; )(TAT<
SortUtil.swap(queue,j,k); 5/@UVY9_
k = j; uQ3[Jz`y
} goZ V.,w
} 6q/?-Qcy
private void fixUp(int k) { :dwt1>
while (k > 1) { ."6[:MF
int j = k >> 1; lr3mE
if (queue[j]>queue[k]) d%ME@6K)
break; nc?B6IV
SortUtil.swap(queue,j,k); lm0N5(XP
k = j; c$h9/H=~
} h"W8N+e\
} &JhX+'U
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} \?lz&<
5v
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Oq
} ,hRN\Kt)p
$>q@SJ1q
SortUtil: 1cC1*c0Z
c0rk<V%5+
package org.rut.util.algorithm; m9":{JI.w
D1T@R)j
import org.rut.util.algorithm.support.BubbleSort; #b)e4vwCq
import org.rut.util.algorithm.support.HeapSort; 3yO=S0`
import org.rut.util.algorithm.support.ImprovedMergeSort; KoBW}x9Jp
import org.rut.util.algorithm.support.ImprovedQuickSort; ;_+uSalt
import org.rut.util.algorithm.support.InsertSort; m_7
nz!h
import org.rut.util.algorithm.support.MergeSort; vHKlLl>*2
import org.rut.util.algorithm.support.QuickSort; <02m%rhuW
import org.rut.util.algorithm.support.SelectionSort; qJv[MBjk3B
import org.rut.util.algorithm.support.ShellSort; ] d?x$>
C9~~O~7x
/** #Dy?GB08
* @author treeroot X#p Wyo~
* @since 2006-2-2 TqAPAHg
* @version 1.0 {eT.SO
*/ I 3$dVls}
public class SortUtil { TO#Pz.)>B6
public final static int INSERT = 1; '7)"
public final static int BUBBLE = 2; (6gK4__}]
public final static int SELECTION = 3; )"<8K}%!
public final static int SHELL = 4; /X*oS&-M
public final static int QUICK = 5; zfI}Q}p
public final static int IMPROVED_QUICK = 6; =Lp7{09u
public final static int MERGE = 7; 3$/ 4wH^
public final static int IMPROVED_MERGE = 8; q3w1GD
public final static int HEAP = 9; [\e@_vY@OH
EbQa?
public static void sort(int[] data) { z\!K<d"Xv
sort(data, IMPROVED_QUICK); X[3}?,aqL
} L
3XB"A#
private static String[] name={ U5r}6D!)
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ud(`V:d
}; ~mp0B9L%
svhI3"r
private static Sort[] impl=new Sort[]{ kxB.,'
new InsertSort(), g P}+wbk
new BubbleSort(), rZ03x\2
new SelectionSort(), -ysn&d\rV
new ShellSort(), 8y2+$
new QuickSort(), dK9Zg,DZL
new ImprovedQuickSort(), kLP0{A
new MergeSort(), UQ?%|y*Kc
new ImprovedMergeSort(), Xrqx\X
new HeapSort() A[N{
}; 6,b"
j<yiNHC
public static String toString(int algorithm){ P 7D!6q
return name[algorithm-1]; F7}-!
} _e<o7Y@_
Bi%x`4Lf
public static void sort(int[] data, int algorithm) { n6Z|Q@F
impl[algorithm-1].sort(data); YTaLjITG
} z8_XX$Mnt
y/_XgPfWU
public static interface Sort { V-yUJ#f8[
public void sort(int[] data); ?&+9WJ<M
} o^p
M[]A2'fS
public static void swap(int[] data, int i, int j) { 5"KlRuv%
int temp = data; E8[T
data = data[j]; v3[@1FQ"
data[j] = temp; TLa]O1=Bf.
} iw?I
} Tl("IhkC