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。 l'TM^B)`c
插入排序: F*Lm=^:
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package org.rut.util.algorithm.support; kH:! 7L_=
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import org.rut.util.algorithm.SortUtil; ,ND}T#yTR
/** +72[*_ <
* @author treeroot xaiA2
* @since 2006-2-2 CJ0{>?
* @version 1.0 +
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*/
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public class InsertSort implements SortUtil.Sort{ ~Iw7Xq E2
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/* (non-Javadoc) X;`XkOjk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7L68voC@U
*/ rik-C7
public void sort(int[] data) { h2M>4c
int temp; hI249gW9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^W}(]jL
} +*/XfPlr|
} 5y3V duE
} p1^k4G
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} 8:s"
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冒泡排序: 5k /Y7+*?E
qRy<W
package org.rut.util.algorithm.support; T#&tf^;
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import org.rut.util.algorithm.SortUtil; *htv:Sr
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/** )y8 u+5^
* @author treeroot ?8dd^iX/
* @since 2006-2-2 ;.Dm?J0
* @version 1.0 .C$4jR.KC
*/ <*O~?=6p
public class BubbleSort implements SortUtil.Sort{ lI#Ap2@
iBlZw%zKP
/* (non-Javadoc) Qy!*U%tG'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dG5p`N%
*/ ^B)iBfZ
public void sort(int[] data) { #Fp5>%*
int temp; @nIoYT='
for(int i=0;i for(int j=data.length-1;j>i;j--){ T.m*LM
if(data[j] SortUtil.swap(data,j,j-1); '#JC 6#X
} gKyYBr
} .7lDJ2
} rDr3)*H?0
} H\W/;Nn
xz9xt
} K7o!,['W
f;";P
选择排序: aB@D-Y"HO
#9=as Y
package org.rut.util.algorithm.support; Z.:g8Xl-6
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import org.rut.util.algorithm.SortUtil; ! 2]eVO
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/** BT[jD}?
* @author treeroot <~wr;"S
* @since 2006-2-2 kY e3A&J
* @version 1.0 (- ]A1WQ?
*/ ?;{d
public class SelectionSort implements SortUtil.Sort { >\J({/ #O
O+ ].'
/* QPL6cU$&R
* (non-Javadoc) d"h*yH@
* 8HL$y-F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UvR F\x%
*/ 6Ja} N
public void sort(int[] data) { tXZE@JyuC
int temp; G.ag$KF
for (int i = 0; i < data.length; i++) { 0[ (Z48
int lowIndex = i; 1^F
!X=
for (int j = data.length - 1; j > i; j--) { fU?P__zU4
if (data[j] < data[lowIndex]) { e15_$M;RW
lowIndex = j; Atdr|2
} ey icMy`7{
} 5G$sP,n
SortUtil.swap(data,i,lowIndex); #2&DDy)Bf
} R<"fcsU
} f8Z[prfP
V_)G=#6Dy
} fV}: eEo|Y
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Shell排序: hT
c
VMc
gmF Cjs
package org.rut.util.algorithm.support; soSdlV{
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import org.rut.util.algorithm.SortUtil; PAYbsn
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/** >gQJ6q
* @author treeroot jY: )W*TXt
* @since 2006-2-2 6p;G~,bd~
* @version 1.0 dCbRlW
*/ 8xAxn+;
public class ShellSort implements SortUtil.Sort{ c,wYXnJ_t
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/* (non-Javadoc) +>v3&[lGv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U^AywE]
*/ q\0CS>.
public void sort(int[] data) { xK7xAO
for(int i=data.length/2;i>2;i/=2){ %Y0,ww2
for(int j=0;j insertSort(data,j,i); HNFG:t9
} 0[/GEY@
} 25:[VH$:4
insertSort(data,0,1); T4
:UJj}
} x%J4A+kU
U04TVQn`
/** `a$c6^a
* @param data . 5cL+G1k#
* @param j p,(gv])ie
* @param i 1R}rL#h;=
*/ 4Z'/dI`
private void insertSort(int[] data, int start, int inc) { he/WqCZg
int temp; &?(<6v7
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !z EW)
} 4Lg!54P8
} eootHK
} [2WJ];FJ
-^R6U~
} [9hslk
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快速排序: T+a\dgd
<%_7%
package org.rut.util.algorithm.support; D@O#P^?
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import org.rut.util.algorithm.SortUtil; G}|!Jdr
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/** ||xiKg
* @author treeroot 9A7LDHst7
* @since 2006-2-2 SC Qr/Q
* @version 1.0 [osIQ!u;:
*/ eNQQ`ll@m
public class QuickSort implements SortUtil.Sort{ ~g#$'dS
t\GoUeH]
/* (non-Javadoc) Fj_6jsDb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )U2cS\k'7n
*/ K@RE-K6{
public void sort(int[] data) { %oee x1`=
quickSort(data,0,data.length-1); 26e. Hu
} ` FJ2
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private void quickSort(int[] data,int i,int j){ 7I#<w[l>k
int pivotIndex=(i+j)/2; z_;:6*l=:
file://swap iJ-z&=dOe
SortUtil.swap(data,pivotIndex,j); ?KB+2]7m6
I`% ]1{
int k=partition(data,i-1,j,data[j]); .!oYIF*0zC
SortUtil.swap(data,k,j); EuJ_UxkG
if((k-i)>1) quickSort(data,i,k-1); o0Z~9iF&
if((j-k)>1) quickSort(data,k+1,j); k <EzYh
p%ve1>c
} @ P'("qb~
/** I:l/U-b7h
* @param data ],W/IDv
* @param i '5usPD
* @param j r;7&U<j~Z
* @return T4c]VWtD
*/ ?D\6@G:,#@
private int partition(int[] data, int l, int r,int pivot) { #Wf9`
do{ \]Nt-3|`0
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gP13n!7
SortUtil.swap(data,l,r); ,UveH` n-
} `[(.Q
while(l SortUtil.swap(data,l,r); B-.QGf8K.
return l; ~d9@m#_T#~
} o8ERU($/
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} f|r+qe
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改进后的快速排序: us,~<e0
YCBcyE}p
package org.rut.util.algorithm.support; @p\te7(P%
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import org.rut.util.algorithm.SortUtil; [
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/** !iHJ!
* @author treeroot gP^p7aYwn
* @since 2006-2-2 .S6u{B
* @version 1.0 /ygC_,mx
*/ S [=l/3c
public class ImprovedQuickSort implements SortUtil.Sort { y88lkV4a
9x]yu6
private static int MAX_STACK_SIZE=4096; oScKL#Hu
private static int THRESHOLD=10; tB<2mjg
/* (non-Javadoc) u 6"v}gN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kKHGcm^r
*/ 'VQ
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public void sort(int[] data) { 0{k*SCN#
int[] stack=new int[MAX_STACK_SIZE]; 4f-I,)qCBk
OBp&64
int top=-1; *S?vw'n
int pivot; abczW[\
int pivotIndex,l,r; RHj<t");
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stack[++top]=0; rP<S
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stack[++top]=data.length-1; TPi=!*$&
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while(top>0){ Gc0/*8u/
int j=stack[top--]; j-n-2:Q
int i=stack[top--]; 6<`tb)_2~
VM"z6@
pivotIndex=(i+j)/2; ^;DbIo\6H
pivot=data[pivotIndex]; =JM !`[
(\A~SKEX
SortUtil.swap(data,pivotIndex,j); iqAME%m
AZ'"Ua
file://partition UPr8Q^wm
l=i-1; g>&b&X&Y_
r=j; J.g4I|{
do{ ,>vI|p,/G*
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wS%j!|xhlV
SortUtil.swap(data,l,r); M?3#XQDvD
} 7eP3pg#
while(l SortUtil.swap(data,l,r); JXNfE,_
SortUtil.swap(data,l,j); #-^y9B
G8hq;W4@]/
if((l-i)>THRESHOLD){ c)Ep<W<r1
stack[++top]=i; .KX LWH
stack[++top]=l-1; ;z3w#fNMv
} tEC`->|
if((j-l)>THRESHOLD){ Xt%>XP
stack[++top]=l+1; WVkJ=r0Ny
stack[++top]=j; ;qwNM~
} #
ZcFxB6)
AriW&E
} >SSRwYIN
file://new InsertSort().sort(data); OO /Pc
insertSort(data); kA/V=xO<
} \66j4?H#
/** 0<4Swj3s7
* @param data \NTNB9>CO
*/ l99{ eD
private void insertSort(int[] data) { p(`?y:.3
int temp; 2[e^mm&.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ge@ KopZ&
} kE*OjywN
} QmRE<i
} XL2iK) A
#->#mshd4
} qFwJ%(IQ
r[votdFo
归并排序: jxdxIkAHZc
Ix1[ $9
package org.rut.util.algorithm.support; Smjg[
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import org.rut.util.algorithm.SortUtil; {I"`(
^N2N>^'&1.
/** ")?NCun>
* @author treeroot f6O5k8n
* @since 2006-2-2 _5l3e7YN
* @version 1.0 w=K!U]
*/ p#6V|5~8
public class MergeSort implements SortUtil.Sort{ dXvp-oi
U%)m
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/* (non-Javadoc) S`v+rQjW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @2eV^eO9
*/ Ei&
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public void sort(int[] data) { cV+x.)a.
int[] temp=new int[data.length]; 8/16<yZ
mergeSort(data,temp,0,data.length-1); I'$}n$UvZ
} n"P29"
3Hg}G#]WS
private void mergeSort(int[] data,int[] temp,int l,int r){ xO nW~Z
int mid=(l+r)/2; leMcY6
if(l==r) return ; }M+2 ,#l
mergeSort(data,temp,l,mid); v*UJ4r
mergeSort(data,temp,mid+1,r); $k=5nJ
for(int i=l;i<=r;i++){
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temp=data; XnCrxj
} Il&}4#:
int i1=l; <Z6tRf;B
int i2=mid+1; JMa[Ulz
for(int cur=l;cur<=r;cur++){ +&:?*(?Q
if(i1==mid+1) tq^d1b(j4
data[cur]=temp[i2++]; y!;PBsU%Sx
else if(i2>r) Q[U_
0O,A9
data[cur]=temp[i1++]; ^%<t^sE
else if(temp[i1] data[cur]=temp[i1++]; YKZk/m&H
else n$S`NNO{]
data[cur]=temp[i2++]; |>2IgTh1a
} ^& R
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} iH#b"h{w
NX5A{
} 5_}e?T&s
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改进后的归并排序: {g7[3WRy
tgX},OU^
package org.rut.util.algorithm.support; xO<$xx
49("$!
import org.rut.util.algorithm.SortUtil; e yLVu.
t=;84lA
/** EC6Q<&]Iw
* @author treeroot ?(!<m'jEy
* @since 2006-2-2 ctzaqsr
* @version 1.0 .PhH|jrCW^
*/ q:9#Vcw
public class ImprovedMergeSort implements SortUtil.Sort { jW G=k#WN
/W,K% s]
private static final int THRESHOLD = 10; i(k]}Di:
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/* l6C^,xU~IX
* (non-Javadoc) vFL\O
* <R?_Yjsw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Wm4JmX%
*/ kK]^q|vb6
public void sort(int[] data) { {D( _"
int[] temp=new int[data.length]; _E{hB
mergeSort(data,temp,0,data.length-1); 'xC83}!k
} :gNTQZR
!QB(M@1
private void mergeSort(int[] data, int[] temp, int l, int r) { j9=QOq
int i, j, k; h]#wwJF
int mid = (l + r) / 2; ;BR`}~m
if (l == r) ( _{\tgSm
return; Nm0kMq|h
if ((mid - l) >= THRESHOLD) $6c8<!B_
mergeSort(data, temp, l, mid); UBUZ}ZIbN
else '~1uJ0H
insertSort(data, l, mid - l + 1); G(puC4 "&
if ((r - mid) > THRESHOLD) $=?CW(
mergeSort(data, temp, mid + 1, r); _l`s}yC
else \y-Lt!}
insertSort(data, mid + 1, r - mid); -F+dRzxH
{ER%r'(4Z
for (i = l; i <= mid; i++) { 9*@K l`\
temp = data; %mhnd):
} 2#n4t2p
for (j = 1; j <= r - mid; j++) { 0ang^v;q
temp[r - j + 1] = data[j + mid]; u= |hRTD=
} 8%UI<I,
int a = temp[l]; S)@95pb
int b = temp[r]; 9M)N2+hkZ
for (i = l, j = r, k = l; k <= r; k++) { :(,Eq?
if (a < b) { *j,5TO-j
data[k] = temp[i++]; !,*#e
a = temp; 0Wf,SYx`s
} else { B}.G(-u?7
data[k] = temp[j--]; He4sP`&I
b = temp[j]; :eK;:pN
} n')#]g0[
} qp-/S^%
} JNzNK.E!m-
8
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/** "tgaFtC=w
* @param data Vo%MG.IPB
* @param l t(4%l4i;X
* @param i %bnDxCj"
*/ xGQ958@
private void insertSort(int[] data, int start, int len) { =o5ZcC
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); XD5z+/F<"0
} Azrc+ k
} &)Fp
} p7Yej(B
} qA<PF+f
Q"UQv<
堆排序:
Efsfuv
S6 F28 d[j
package org.rut.util.algorithm.support; eKlh }v
zof>S>5>R7
import org.rut.util.algorithm.SortUtil; E3#}:6m
I=VPw5"E
/** sKhX0,s&
* @author treeroot `z$<1QT
* @since 2006-2-2 Be{7Rj v
* @version 1.0 DWep5$>&K
*/ $X~4J
public class HeapSort implements SortUtil.Sort{ C7`FM@z
sgDlT=c'
/* (non-Javadoc) j_E$C.XU{g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Slc6$
*/ J7BfH,o
public void sort(int[] data) { q<rB(j-(
MaxHeap h=new MaxHeap(); D+/27#
h.init(data); 83UIH0(
for(int i=0;i h.remove(); ir<HC 'D[
System.arraycopy(h.queue,1,data,0,data.length); ]3<k>?
} |q5R5mQ
AD4KoT&
private static class MaxHeap{ 08&DP^NS
Bry\"V"'g
void init(int[] data){ xtyzy@)QL
this.queue=new int[data.length+1]; @cNX\$J
for(int i=0;i queue[++size]=data; Dh0`t@
fixUp(size); Vd[[<
} +1Oi-$
2-
} }3cOZd_,t
l|[cA}HtB
private int size=0; 4f<%<Z
f{[U->#^
private int[] queue; bNR}Mk]?
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public int get() { Sc;WraEn2
return queue[1]; l9XK;0R9
} *4Cq,o`o>
Q*mzfsgr
public void remove() { 2xH9O{
SortUtil.swap(queue,1,size--); [>+(zlK"
fixDown(1); `<2y
[<y
} Esw#D90q
file://fixdown #*;(%\q}
private void fixDown(int k) { >}h/$bU
int j; Rm 1obP
while ((j = k << 1) <= size) { Ub%+8M
if (j < size %26amp;%26amp; queue[j] j++; #Yi,EwD
if (queue[k]>queue[j]) file://不用交换 7Xm7{`jH
break; EO$_]0yI;_
SortUtil.swap(queue,j,k); Fku9hB
k = j; .?9+1.`
} d paZ6g
} _, /m
private void fixUp(int k) { Z3Os9X9p
while (k > 1) { y%
=nhV
int j = k >> 1; Oz!#);v
if (queue[j]>queue[k]) h|"98PI
break; 0l !%}E
SortUtil.swap(queue,j,k); ]kx)/n-K
k = j; EAp6IhW{
} q[1:h
} oHdss;q
2 628 c`
} C"_f3[Z
h"cLZM:6
} W+V#z8K
\ Xow#@[
SortUtil: U8kH'OD
kVE%
"
package org.rut.util.algorithm; (nfra,'
+ia F$
import org.rut.util.algorithm.support.BubbleSort; ^%wj6
import org.rut.util.algorithm.support.HeapSort; iX qB-4"
import org.rut.util.algorithm.support.ImprovedMergeSort; H[?~u+
import org.rut.util.algorithm.support.ImprovedQuickSort; IO~d.Ra
import org.rut.util.algorithm.support.InsertSort; h[72iVn
import org.rut.util.algorithm.support.MergeSort; T1m'+^?"
import org.rut.util.algorithm.support.QuickSort; 3/mVdU?U
import org.rut.util.algorithm.support.SelectionSort; p*)RP2
import org.rut.util.algorithm.support.ShellSort; q/~U[.C
~fB}v
/** aG;6^$H~
* @author treeroot @=q,,t$r
* @since 2006-2-2 mz@`*^7?
* @version 1.0 w#g0nV"X6
*/ #<|5<U
public class SortUtil { Vc|r(lM
public final static int INSERT = 1; Va,M9)F
public final static int BUBBLE = 2; ZeD;
public final static int SELECTION = 3; zvB!=
public final static int SHELL = 4; 2P`QS@v0a=
public final static int QUICK = 5; {^gbS
public final static int IMPROVED_QUICK = 6; x;"!
public final static int MERGE = 7; 2MwRjh_
public final static int IMPROVED_MERGE = 8; -]c5**O}
public final static int HEAP = 9; 'bp*hqG[
5\1Z"?
public static void sort(int[] data) { R>H*MvN
sort(data, IMPROVED_QUICK); gv$6\1
} l4u@0;6P
private static String[] name={ |g]TWKc*
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xMJF1O?3
}; X||Z>w}v
?P4@U9i
private static Sort[] impl=new Sort[]{ JmdXh/X
new InsertSort(), uV.3g 1m
new BubbleSort(), iOz<n
z
new SelectionSort(), bf2R15|t5`
new ShellSort(), "8|y
new QuickSort(), M"[s5=:Lo
new ImprovedQuickSort(), o<P@:}K
new MergeSort(), b3}928!D-@
new ImprovedMergeSort(), RbX!^v<0f6
new HeapSort() s mub> V
}; Ry*NRP;
CBdSgHA3>
public static String toString(int algorithm){ rm2"pfs
return name[algorithm-1]; ZxkX\gl91
} rZ<0ks
dgPJte%i
public static void sort(int[] data, int algorithm) { |`T3H5X>
impl[algorithm-1].sort(data); -'+|r]
} en>d T
n
m(yFX?=
public static interface Sort { *>%34m93
public void sort(int[] data); tVQfR*=
} i.2O~30ST
?TLEZlB2"
public static void swap(int[] data, int i, int j) { _`Ey),c _
int temp = data; awuUaE
data = data[j]; -H~g+i*J
data[j] = temp; quk~z};R>\
} H4 Y7p
} .E!7}O6