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。 ?wiCQ6*$
插入排序: 'RQ+g}|Ba!
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package org.rut.util.algorithm.support; 3nIU1e
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import org.rut.util.algorithm.SortUtil; /yDz/>ID\
/** \}u
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* @author treeroot Bw)/DM]
* @since 2006-2-2 ^pAAzr"hv
* @version 1.0 dh`K`b4I
*/ 8`q:Gz=M\
public class InsertSort implements SortUtil.Sort{ uB]7G0g:
b,l$1{
/* (non-Javadoc) -[4T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1b `1{%
*/ IXMop7~
public void sort(int[] data) { 6@h/*WElG
int temp; Gv!2f
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vsCCB}7\
} iW]j9} t
} iTBx\u%{
} ajbA\/\G;
]}<}lI9
} ="1Ind@w!
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冒泡排序: |B?m,U$A!
I*:%ni2
package org.rut.util.algorithm.support; :[p}
*.ll<p+(-
import org.rut.util.algorithm.SortUtil; !_]Y~[
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/** Dzpq_F!;V
* @author treeroot s[RAHU
* @since 2006-2-2 YiXk5B0Uh
* @version 1.0 Avge eJi
*/ <,3a3
public class BubbleSort implements SortUtil.Sort{ g+8OekzB5
9%o32eo,3
/* (non-Javadoc) 8l>?Pv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & TCkpS
*/ f&NgS+<K$
public void sort(int[] data) { @+&LYy72
int temp; R~TTL
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5N#aXG^9
if(data[j] SortUtil.swap(data,j,j-1); G*?8MTP8![
} oM
X
} fF!Yp iI"
} gldAP:
} KaLzg5is
Hc;[Cs0
} =Pyj%4Rs
3<e=g)F
选择排序: n QF(vTDN
W-$Z(Z
XL
package org.rut.util.algorithm.support; <.%4 !
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import org.rut.util.algorithm.SortUtil; u%GEqruo[
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/** 77 Q5d"sIi
* @author treeroot >1X|^
* @since 2006-2-2 H-!,yte
* @version 1.0 ]"pVj6O
*/ 1>.Ev,X+e
public class SelectionSort implements SortUtil.Sort { IY1//9
lwR<(u31e
/* A\*>TN>s
* (non-Javadoc) &.F4b~A7
* w$>u b@=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4XL^D~V
*/ av(6wht8
public void sort(int[] data) { i:dR\|B
int temp; \Zb;'eDv
for (int i = 0; i < data.length; i++) { mwO6g~@`
int lowIndex = i; ;t)3F
for (int j = data.length - 1; j > i; j--) { 9v#CE!
if (data[j] < data[lowIndex]) { Do9x
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lowIndex = j; \wmN
} .S EdY:
} E[OJ+ ;c
SortUtil.swap(data,i,lowIndex); TbMW|0 #w
} "6A
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q\
} g9OY<w5s]
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} l#&8x
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Shell排序: &.3"Uo\#
)Dms
package org.rut.util.algorithm.support; XMZ,Y7
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import org.rut.util.algorithm.SortUtil; [\]50=&
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/** Z<oaK
* @author treeroot `&qL(66
* @since 2006-2-2 ~ZaY!(R<
* @version 1.0 5#6|j?_a
*/ \eTwXe]Pv
public class ShellSort implements SortUtil.Sort{ <(#(hDwy
$L`d&$Vh
/* (non-Javadoc) %64)(z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #I.+aV+2oQ
*/ v@sIHb
public void sort(int[] data) { 'B$yo]
for(int i=data.length/2;i>2;i/=2){ kb%;=t2
for(int j=0;j insertSort(data,j,i); m<G,[Yc
} 2B1q*`6R
} 2F[ q).
insertSort(data,0,1); |o"?gB}Dh
} xa'*P=<)C'
s3N'02G
/** fy1|$d{'
* @param data ~i= _J3'
* @param j ;7*[Bcj.
* @param i -12UN(&&Z
*/ :]K4KFM
private void insertSort(int[] data, int start, int inc) { KRbvj
int temp; 5PCqYN(:B
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j8i[ONq^
} > tS'Q`R
} W ~<^L\Lu
} &N9
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PN%zIkbo
} -:^U_FL8un
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快速排序: wVXS%4|v
7O2/z:$f
package org.rut.util.algorithm.support; >~rTqtKd
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import org.rut.util.algorithm.SortUtil;
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/** ?PxP% $hS
* @author treeroot cU (D{~
* @since 2006-2-2 X56q-|
* @version 1.0 lgAoJ[
*/ ~Gp[_ %K
public class QuickSort implements SortUtil.Sort{ mM~qBrwL
0JS?; fk
/* (non-Javadoc) S>+|OCl";
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G5_=H,Vmd
*/ GMx&y2. Z
public void sort(int[] data) { dbLZc$vPj
quickSort(data,0,data.length-1); R- wp9 ^
} 2szPAuN+
private void quickSort(int[] data,int i,int j){ PQt")[
int pivotIndex=(i+j)/2; NX.6px17
file://swap KkyVSoD\
SortUtil.swap(data,pivotIndex,j); B
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pad*oPH,
int k=partition(data,i-1,j,data[j]); M^Yh|%M
SortUtil.swap(data,k,j); q_8+HEvo
if((k-i)>1) quickSort(data,i,k-1); atH*5X6d
if((j-k)>1) quickSort(data,k+1,j); 5~U/
+/7?HGf
} hag$GX'2k
/** P5V}#;v
* @param data =?*!"&h
* @param i UgRiIQMq.
* @param j wu6;.xTLl
* @return &B;~
*/ @;4zrzQi7
private int partition(int[] data, int l, int r,int pivot) { EWt[z.`T1
do{ bs&43Ae
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n6>#/eUH
SortUtil.swap(data,l,r); iMh#TUlQEQ
} >uB?rGcM
while(l SortUtil.swap(data,l,r); K3m/(jdO
return l; @bLy,Xr&
} pF >i-i
dQX6(Jj
} uMv,zO5
cZ*@$%_
改进后的快速排序: Hio0HL-
.43'HV
package org.rut.util.algorithm.support; y<3-?}.aZ
ttQGoUkj
import org.rut.util.algorithm.SortUtil; 'oVx#w^mf
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/** N>1em!AS
* @author treeroot hfB%`x#akQ
* @since 2006-2-2 ;;t yoh~t
* @version 1.0 E&w7GZNt
*/ SulY1,
public class ImprovedQuickSort implements SortUtil.Sort { @1j
e%M;?0j
private static int MAX_STACK_SIZE=4096; Yh7t"=o
private static int THRESHOLD=10; DCa^
u'f
/* (non-Javadoc) Nx;~@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G*MUO#_iuh
*/ >R_&Ouh:
public void sort(int[] data) { >y>5#[M!
int[] stack=new int[MAX_STACK_SIZE]; TX/Xt7#R:
v1JzP#
int top=-1; pki%vRY
int pivot; NxY#NaE:?4
int pivotIndex,l,r; T::85
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stack[++top]=0; F(n$
stack[++top]=data.length-1; ~~P5k:
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while(top>0){ 0+ '&`Q!u
int j=stack[top--]; T-L||yE,h
int i=stack[top--]; \)[j_^
j$:~Rek
pivotIndex=(i+j)/2; uzPVTo|=
pivot=data[pivotIndex]; BO&bmfp7,
e*C(q~PQ
SortUtil.swap(data,pivotIndex,j); ;'K5J9k
]6`%
file://partition J@'wf8Ub
l=i-1; I236RIq
r=j; G` A4|+W"
do{ ,4$>,@WW~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T^KKy0ZGM
SortUtil.swap(data,l,r); X_h}J=33Q
} t:Q*gWRh
while(l SortUtil.swap(data,l,r); Kc-W&?~y#1
SortUtil.swap(data,l,j); =T@1@w
SnfYT)Ph
if((l-i)>THRESHOLD){ 7$=InK
stack[++top]=i; AkV#J,
3LC
stack[++top]=l-1; GefTdO.&
} oc`H}Wvn
if((j-l)>THRESHOLD){ b$joY*< 6
stack[++top]=l+1; NLqzi%s
stack[++top]=j; eauF~md,
}
t{96p77)=
i.m^/0!
} ~?BXti<!
file://new InsertSort().sort(data); /4Gt{ygSr
insertSort(data); p5iuYHKk?
} .q>iXE_c
/** tD)J*]G
* @param data l_p2Riv
*/ K0>zxqY
private void insertSort(int[] data) { W6Fo6a"<
int temp; (<9u-HF#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K"MX!
} 4r}51 N\
} KWHY4
} g7H(PF?
fJg+ Ryo
} ]/v[8dS(l
WyiQoN'q
归并排序: 9.#<b|g
@yYkti;4-
package org.rut.util.algorithm.support; TLH1>pY&
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import org.rut.util.algorithm.SortUtil; >(<f 0
{Sh ;(.u^
/** hZb_P\1X
* @author treeroot RRJ%:5&
* @since 2006-2-2 SXh-A1t
* @version 1.0 ^\m![T\bX
*/ (bS&D/N.
public class MergeSort implements SortUtil.Sort{ ;uGv:$([g
*;FdD{+
/* (non-Javadoc) "AqB$^S9t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LS[]=Mk@1
*/ KI.hy2?e
public void sort(int[] data) { HzsdHH(J
int[] temp=new int[data.length]; fz_r7?
mergeSort(data,temp,0,data.length-1); xE}>,O|'q
} c71y'hnT
ckn(`I
private void mergeSort(int[] data,int[] temp,int l,int r){ DY*N|OnqJ
int mid=(l+r)/2; MdF2Gk-9
if(l==r) return ; !G|@6W`
mergeSort(data,temp,l,mid); ['D]>Ot68
mergeSort(data,temp,mid+1,r); P+}h$_x
for(int i=l;i<=r;i++){ /-s6<e!
temp=data; K
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} 8P`"M#fI
int i1=l; e3\T)x&=
int i2=mid+1; \U_@S.
for(int cur=l;cur<=r;cur++){ `]aeI'[}R
if(i1==mid+1) x)&\z}
data[cur]=temp[i2++]; 6eCCmIdaM
else if(i2>r) vDvFL<`vmD
data[cur]=temp[i1++]; =(^3}x
else if(temp[i1] data[cur]=temp[i1++]; |W^IlqTH
else jEwIn1
data[cur]=temp[i2++]; khd4ue$
} 7HWmCaa[
} 6LhTBV
)/P}?`I
} Ys7]B9/1O
]$hBMuUa
改进后的归并排序: *1"+%Z^
O.M1@w]
package org.rut.util.algorithm.support; dr"1s-D4IQ
wC*X4 '
import org.rut.util.algorithm.SortUtil; 7 8,n%=nG
VU#7%ufu&
/**
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* @author treeroot gM]:Ma
* @since 2006-2-2 1;iUWU1@
* @version 1.0 l-3~K-k<@
*/ {`_i`
public class ImprovedMergeSort implements SortUtil.Sort { *WZA9G#V5
\7_y%HR
private static final int THRESHOLD = 10; n"8Yv~v*2j
SrJE_~i
/* C#pjmT_
* (non-Javadoc) i~72bMwsA
* ,: ^u-b|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A}w/OA97RO
*/ 3c%caK
public void sort(int[] data) { |BYRe1l6l
int[] temp=new int[data.length]; QWU-m{@~&
mergeSort(data,temp,0,data.length-1); 'fW-Y!k%
} xx $cnG
g{LP7D;6
private void mergeSort(int[] data, int[] temp, int l, int r) { YZ7.1`8
int i, j, k; _dU\JD
int mid = (l + r) / 2; 3XKf!P
if (l == r) "jCu6Rj d
return; r<\u6jF
if ((mid - l) >= THRESHOLD) D'4\*4is
mergeSort(data, temp, l, mid); $Q0n
else *ui</+
insertSort(data, l, mid - l + 1); n@w%Zl
if ((r - mid) > THRESHOLD) h];I{crh
mergeSort(data, temp, mid + 1, r); '>"
4
else V8(-
insertSort(data, mid + 1, r - mid); =H~j,K
>3bCTE
for (i = l; i <= mid; i++) { w
= KPT''!
temp = data; p[cX O=
} Gh$^ {
for (j = 1; j <= r - mid; j++) { _B0L.eF
temp[r - j + 1] = data[j + mid]; Pc9H0\+Xk
} <GsuZ
int a = temp[l]; r*Xuj=
int b = temp[r]; SX*RP;vHy
for (i = l, j = r, k = l; k <= r; k++) { OJxl<Q=z
if (a < b) { z)"=:o7
data[k] = temp[i++]; "5
A!jq
a = temp; t&p|Ynz?i
} else { KmF]\:sMD
data[k] = temp[j--]; m kexc~l
b = temp[j]; #/]nxW.S
} ElXFeJ%[G
} ~5g ~;f[4
} YK\X+"lB
x"~JR\yzKJ
/** j<x_ &1
* @param data O@P"MXEG
* @param l /j^
* @param i #1[u(<AS
*/ 2?x4vI
np;
private void insertSort(int[] data, int start, int len) { Yw9GN2AG
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [gB+C84%%
} _Y!IEAU/#
} Q20%"&Xp]
} ~m |BC*)
} Z}QB.$&
>V~E]P%@
堆排序: a
=QCp4^
/o[w4d8
package org.rut.util.algorithm.support; 4Up/p&1@
MPV5P^@X
import org.rut.util.algorithm.SortUtil; m2o0y++TjW
9gFUaDLo
/** XRH!]!
* @author treeroot *or(1DXP8
* @since 2006-2-2 OCUr{Nh
* @version 1.0 vbNBLCwug
*/ _LPHPj^Pg
public class HeapSort implements SortUtil.Sort{ 8RX&k
OH88n69
/* (non-Javadoc) P%6~&woF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <!+Az,-
*/ `g,..Ns-r
public void sort(int[] data) { hj:,S|
MaxHeap h=new MaxHeap(); H. c7Nle
h.init(data); R2;
for(int i=0;i h.remove(); zTp"AuNHN
System.arraycopy(h.queue,1,data,0,data.length); KP"+e:a%
} g :OI
P3%5?.S
private static class MaxHeap{ s S
Mh`4'
?(PKeq6
void init(int[] data){ 9z0p5)]n>
this.queue=new int[data.length+1]; \lY_~*J
for(int i=0;i queue[++size]=data; ebq4g387X
fixUp(size); GeqPRah
} !W\+#ez
} C+]I@Go'Tk
dveiQ
private int size=0; ;
KA~Z5x;
z{6Z
11|
private int[] queue; omFz@
D@KlOU{<
public int get() { q| 7(
return queue[1]; K'xV;r7Nt
} BWNi [^]
(BM47D=v
public void remove() { CAlCDfKW}
SortUtil.swap(queue,1,size--); QWU[@2@%r
fixDown(1); i@q&5;%%
} =*Lfl'sr_
file://fixdown Q/?$x*\>
private void fixDown(int k) { ^pS~Z~[d/
int j; }b}m3i1
while ((j = k << 1) <= size) { g7|@
if (j < size %26amp;%26amp; queue[j] j++; b$7 +;I;
if (queue[k]>queue[j]) file://不用交换 [WJ+h~~
o
break; Zfw,7am/
SortUtil.swap(queue,j,k); N#]ypl
k = j; "7
yD0T)2
} `XKLU
} 2eogY#
private void fixUp(int k) { m'U0'}Ld};
while (k > 1) {
y7{?Ip4[
int j = k >> 1; RFGffA&
if (queue[j]>queue[k]) "4Nt\WQ
break; ^
9sjj
SortUtil.swap(queue,j,k); + 3gp%`c4
k = j; 4| f*eO
} iscz}E,Y
} TC('H[
]
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} l{9Y
9sP0D
} U:`Kss`
=|=(l)8
SortUtil: hp2t"t
9$t(&z=
package org.rut.util.algorithm; GyIV
Hby
D9df=lv
mD
import org.rut.util.algorithm.support.BubbleSort; +vH4MwG$.&
import org.rut.util.algorithm.support.HeapSort; 1oS/`)
import org.rut.util.algorithm.support.ImprovedMergeSort; _t$sgz&
import org.rut.util.algorithm.support.ImprovedQuickSort; {ax:RUQxy
import org.rut.util.algorithm.support.InsertSort; Z;i:](
import org.rut.util.algorithm.support.MergeSort; \zY!qpX<
import org.rut.util.algorithm.support.QuickSort; x:;kSh
import org.rut.util.algorithm.support.SelectionSort; sB</DS
import org.rut.util.algorithm.support.ShellSort; ig!+2g
:h$$J
lP
/** eRYK3W
* @author treeroot Wzh`or
* @since 2006-2-2 yfSmDPh
* @version 1.0 osRy e3
*/ 6<]lW
public class SortUtil { =(Mch~
public final static int INSERT = 1; 3mgD(,(^
public final static int BUBBLE = 2; uD'6mk*
public final static int SELECTION = 3; Wri<h:1
public final static int SHELL = 4; Sf'CN8
public final static int QUICK = 5; x4 yR8n(
public final static int IMPROVED_QUICK = 6; 8r{.jFGv
public final static int MERGE = 7; O?2DQY?jT
public final static int IMPROVED_MERGE = 8; tYS06P^<
public final static int HEAP = 9; *T/']t
*p U x8yB
public static void sort(int[] data) { JI}'dU>*U:
sort(data, IMPROVED_QUICK); y0#2m6u
} %Zi} MPx
private static String[] name={ M-71 1|eGI
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fex@,I&
}; \e;iT\=.(
Upe%rC(
private static Sort[] impl=new Sort[]{ $mI Loy
B,
new InsertSort(), \dVOwr
new BubbleSort(), >A= f1DF
new SelectionSort(), GJrG~T
new ShellSort(), iMlWM-wz>O
new QuickSort(), #mF"1QW
new ImprovedQuickSort(), uFE)17E
new MergeSort(), U6K|fYN`
new ImprovedMergeSort(), 1#x0 q:6
new HeapSort() XSRsGTCC=
}; w<#!h6Y=
f#;> g
public static String toString(int algorithm){ @dKTx#gZ
return name[algorithm-1]; V88p;K$+
} LoV<:|GTI
ax`o>_)
public static void sort(int[] data, int algorithm) { 9w"*y#_
impl[algorithm-1].sort(data); ^('wy};
} TOt dUO
D7Z /H'|
public static interface Sort { ]gOy(\B
public void sort(int[] data); 1Mzmg[L8
} =bOW~0Z1
-RwE%cr
public static void swap(int[] data, int i, int j) { zCZf%ATq
int temp = data; %J(:ADu]
data = data[j]; e6*8K@LHB
data[j] = temp; G{}VPcrbC
} FPz9N@M%Q
} V
gWRW7Se