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。 HMGB>
插入排序: O(Jj|Z
\2C`<h$fN
package org.rut.util.algorithm.support;
_D,
;MB&7
D=r))
import org.rut.util.algorithm.SortUtil; O9M{ ).
/** 0s#Kp49-
* @author treeroot MGpt}|t-
* @since 2006-2-2 ;#/@+4@a&
* @version 1.0 f3MRD4+-
*/ &&>tf%[
public class InsertSort implements SortUtil.Sort{ P9Q~r<7n
!CTxVLl"F
/* (non-Javadoc) XMIbUbUk-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eU@Cr7@,|
*/ ]< l6s
public void sort(int[] data) { &a0r%L()X
int temp; 23F/\2MSG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p=Q0!!_r
} TUK"nKSZ`.
} wK_]/Q-L
} Z8O n%Mx{"
c}Z6V1]QP
} &[Xu!LP
fV>CZ^=G
冒泡排序: \nNXxTxX!
dihjpI_
package org.rut.util.algorithm.support; Uz7oL8
kRJ4-n^@><
import org.rut.util.algorithm.SortUtil; '9p@vi{\
56lCwXCgA
/** YY((#"o;l
* @author treeroot D/y bFk
* @since 2006-2-2 hwYQGtjF
* @version 1.0 H6*^Ga
*/ H`hnEOyLp
public class BubbleSort implements SortUtil.Sort{ <xpph
t<
ZUm?*.g\^
/* (non-Javadoc) \>. LW9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1/+C5Bp*
*/ }|OaL*|u
public void sort(int[] data) { >SF Uy\3
int temp; 1$/MrPT(b
for(int i=0;i for(int j=data.length-1;j>i;j--){ &F
*'B|n
if(data[j] SortUtil.swap(data,j,j-1); 82{ Vc
} B(g_Gm<
} Q#I"_G&{
} C*=Xk/0
} K7knK
fEf_F
r
} \W5O&G-C
JCx
WWre
选择排序: } p
FQRSOZ
.T<=z
package org.rut.util.algorithm.support; 3981ie
{6;9b-a]
import org.rut.util.algorithm.SortUtil; `_I@i]i^
8H,4kY?Z
/** jdZ~z#`(!:
* @author treeroot Pt:e!qX)
* @since 2006-2-2 RcG0 8p.)
* @version 1.0 -H^oXeN
*/ mYN7kYR}<`
public class SelectionSort implements SortUtil.Sort { Ix@&$!'k
e1(Q(3
/* f),TO
* (non-Javadoc) x5`br.b
* |:[tNs*,O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K%<j=c
*/ g6@Fp7T
public void sort(int[] data) { c .3ZXqpI;
int temp; G@FI0\t
for (int i = 0; i < data.length; i++) { oBQ#eW aY
int lowIndex = i; $E<Esf$
for (int j = data.length - 1; j > i; j--) { fqX"Lus `=
if (data[j] < data[lowIndex]) { y.5/?{GL
lowIndex = j; 00I}o%akO
} Ars687WB
} E1dD7r\
SortUtil.swap(data,i,lowIndex); ^'CPM6J
} Xp\/YJOibd
} <?-YTY|
w{[=l6L m
} f0<hE2
2]GdD*
Shell排序: =ph&sn$;L
CTt vyr
package org.rut.util.algorithm.support; 6R-&-4
~7~~S*EQ
import org.rut.util.algorithm.SortUtil; x";w%
{2/LRPT
/** <DKS+R
* @author treeroot m }a|FS
* @since 2006-2-2 Y$N)^=7
* @version 1.0 1c3TN#|)W
*/ XBd>tdEP
public class ShellSort implements SortUtil.Sort{ [b%:.bjY
B\J^=W+`
/* (non-Javadoc) V@>r*7\F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GRb*EeT
*/ T2}FYVj?!g
public void sort(int[] data) { q)H1pwxD
for(int i=data.length/2;i>2;i/=2){ u p.Q>28r
for(int j=0;j insertSort(data,j,i); l Z#o+d2Y
} /V3=KY`_J
} F:*W5xX
insertSort(data,0,1); vS\%3A4^+5
} TG}*5Z`
0TfS=scT
/** tz#gClo
* @param data mRB
* @param j JnHo 9K2.
* @param i !d<"nx[2`
*/ k(zsm"<q
private void insertSort(int[] data, int start, int inc) { V.os
int temp; (P&4d~)m
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); REZJ}%}/
} ?$f)&O
} uwRr LF
} wi9DhVvc 0
0ye!R
} 4}`
.sQ=;w/ZA
快速排序: R[49(>7H4
k>t)g-,2
package org.rut.util.algorithm.support; "ZTTg>r
|
8qBm
import org.rut.util.algorithm.SortUtil; )o\jJrVDf
'V8N
/** pO8ePc@=D
* @author treeroot >iS`pb
* @since 2006-2-2 Yvn\xph3
* @version 1.0 -(O-%
*/ 83;NIE;
public class QuickSort implements SortUtil.Sort{ ?Ma~^0
D")_;NLE1
/* (non-Javadoc) Lh.`C7]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sp@E8G%xO
*/ "NgoaG~!YO
public void sort(int[] data) { PrudhUI^
quickSort(data,0,data.length-1); ;raN
} e/->_T(I
private void quickSort(int[] data,int i,int j){ -P&6L\V
int pivotIndex=(i+j)/2; 5 H#W[^s"
file://swap YeF1C/'hy
SortUtil.swap(data,pivotIndex,j); GTHkY*
<hwy*uBrD
int k=partition(data,i-1,j,data[j]); e</$ s
SortUtil.swap(data,k,j); ,gL9?Wz
if((k-i)>1) quickSort(data,i,k-1); oI^4pwn h
if((j-k)>1) quickSort(data,k+1,j); #Rg|BfV-
p{PE@KO:
} BTM),
w2
/** vD 5vbl
* @param data )sho*;_o
* @param i DJP2IP
* @param j a_h]?5
:c
* @return >vuY+o;B
*/ e"
]2=5g
private int partition(int[] data, int l, int r,int pivot) { 7\ nf:.
do{ JHf
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1SrJ6W @j[
SortUtil.swap(data,l,r); 4%1D}9hO6
} ?<6CFH]
while(l SortUtil.swap(data,l,r); Q5%#^ZdsTd
return l; wH~kTU2br
} 0\2\*I}?
cUDoN`fSl,
} ho>k$s?
QdLYCR4f
改进后的快速排序: 5e
sQ;
!"+'A)Nve
package org.rut.util.algorithm.support; iS5W>1]
O5H9Y}i]
import org.rut.util.algorithm.SortUtil; q5>v'ZSo
= waA`Id
/** ~tOAT;g}q
* @author treeroot iD= p\
* @since 2006-2-2 E*?<KZe"
* @version 1.0 \6;=$f/?t
*/ L28*1]\Jh
public class ImprovedQuickSort implements SortUtil.Sort { c{[q>@y
pK
A>{p2?`+!
private static int MAX_STACK_SIZE=4096; Fq9Q+RNMZL
private static int THRESHOLD=10; a,78l@d(
/* (non-Javadoc) TNQP"9[?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s}pIk.4ot!
*/ 5MzFUv0)
public void sort(int[] data) { 6%Be36<
int[] stack=new int[MAX_STACK_SIZE]; V21njRS
k1VT /u
int top=-1; j[Uxa
int pivot; 7<H
|QL&
int pivotIndex,l,r; LHJ":^
XT;u<aJs
stack[++top]=0; o!Rd ^
stack[++top]=data.length-1; 'Wa,OFd\8
si4don
while(top>0){ C{2xHd/*
int j=stack[top--]; m! U9m
int i=stack[top--]; OM{WI27
inlk++Og
pivotIndex=(i+j)/2; "(qw-kil
pivot=data[pivotIndex]; 4[r/}/iGo
fr!Pj(Q1
SortUtil.swap(data,pivotIndex,j); Y<0 4RV
xnE|Umz
file://partition wp7!>%s{
l=i-1; xUfbW;;]UU
r=j; V]EtwA
do{ C;(t/zh
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 42L
@w
SortUtil.swap(data,l,r); eSW{Cb
} fu$R7
while(l SortUtil.swap(data,l,r); M@W[Bz
SortUtil.swap(data,l,j); sl*5Y#,|1
O0>A+o[1F
if((l-i)>THRESHOLD){ hR5_+cuIp
stack[++top]=i; "*O4GPj
stack[++top]=l-1; ItVugI(^ C
} $H$j-)\D
if((j-l)>THRESHOLD){ -|rLs$V1r
stack[++top]=l+1; hVUP4 A
stack[++top]=j; `-3o+ID\
} _4 cvX
<_(/X,kBK
} qF iLh9=D
file://new InsertSort().sort(data); \
u_ui
insertSort(data); R>`}e+-D
} 4`Ic&c/
/** =vT<EW}[
* @param data ;Eec5w1
*/ @*
il3h,
private void insertSort(int[] data) { Pl-5ncb\
int temp; )J?{+3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {D g_?._d
} HHjt/gc}`
} l1]p'Liuu
} s}onsC
dJ?XPo"Cm=
}
y<C<_2
cQ:"-!ff
归并排序: 7H>@iI"?
n[YEOkiG
package org.rut.util.algorithm.support; ;+1RUv
XhsTT2B
import org.rut.util.algorithm.SortUtil; ~8aJ S,u
KgN)JD>
/** ps$7bN C
* @author treeroot LK"
bC
* @since 2006-2-2 L#)(H^[
* @version 1.0 8QK5z;E2~
*/ sE{ pzPq!
public class MergeSort implements SortUtil.Sort{ kM`l
Z/rTVAs@r
/* (non-Javadoc) M/Pme&%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "n:{!1VGw
*/ 6oSQQhge
public void sort(int[] data) { c%*($)#
int[] temp=new int[data.length]; l^J75$7
mergeSort(data,temp,0,data.length-1); wv^rS^~
} lnGq :-
~XeFOMq
private void mergeSort(int[] data,int[] temp,int l,int r){ *Ei|fe$sa
int mid=(l+r)/2; PA w-6;
if(l==r) return ; _7DkS}NJs
mergeSort(data,temp,l,mid); CQ;]J=|<_
mergeSort(data,temp,mid+1,r); ~ d^<_R
for(int i=l;i<=r;i++){ ;6
+}z~
temp=data; .Wi{lt
} 20rkKFk*
int i1=l; {G*A.$-d
int i2=mid+1; >u%]6_[
for(int cur=l;cur<=r;cur++){ f.GETw
if(i1==mid+1) a{Esw`
data[cur]=temp[i2++]; 3?E8\^N\n
else if(i2>r) V#ev-\k}@
data[cur]=temp[i1++]; -G,^1AL>
else if(temp[i1] data[cur]=temp[i1++]; [Pe#kzLX
else $(Ugtimdv
data[cur]=temp[i2++]; fri0XxF
} R_sC! -
} BK,sc'b
x_|F|9
} ":3 VJ(eY
r3rxC&
改进后的归并排序: drwgjLC+
qC!&x,}3
package org.rut.util.algorithm.support;
x{}z ;yG
$>U#
W:
import org.rut.util.algorithm.SortUtil; 9dh>l!2
`IINq{Zk
/** FI8Oz,
* @author treeroot fQ+VT|jzx
* @since 2006-2-2 [~D|peM3
* @version 1.0 :`)~-`_
*/ M\b")Tu{0
public class ImprovedMergeSort implements SortUtil.Sort { PN+G:Qv
hl&-\ dc+
private static final int THRESHOLD = 10; \RQ='/H*
}Vu\(~
/* (SVWdgb
* (non-Javadoc) -oz`"&%
* ]<DNo&fw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9]$8MY
*/ ,D6v4<jh
public void sort(int[] data) { ')S;[= v
int[] temp=new int[data.length]; vhr+g 'tf
mergeSort(data,temp,0,data.length-1); 6{d6s#|%
} U-wLt(Y<
4\.V
private void mergeSort(int[] data, int[] temp, int l, int r) { EPW7+Ve
int i, j, k; c':ezEaC
int mid = (l + r) / 2; o
A*G
if (l == r) g=}v>[k E
return; J` {6l
if ((mid - l) >= THRESHOLD) +a=
0\lpOy
mergeSort(data, temp, l, mid); +kdySWF
else mxSKG>
O
insertSort(data, l, mid - l + 1); !0/z>#b
if ((r - mid) > THRESHOLD) !~<siy
mergeSort(data, temp, mid + 1, r);
IGX:H)&*
else ,(G%e
insertSort(data, mid + 1, r - mid); f]~c)P
Cs
NkxCs
for (i = l; i <= mid; i++) { tNs~M4TVVH
temp = data; &K^MNd
} `P+(&taT
for (j = 1; j <= r - mid; j++) { R4%P:qM
temp[r - j + 1] = data[j + mid]; 9+Y D!y
} 5H,G-
int a = temp[l]; M
ixwK,
int b = temp[r]; >zY \Llv
for (i = l, j = r, k = l; k <= r; k++) { F)$K
if (a < b) { o?Sla_D
data[k] = temp[i++]; ;@ WV-bLe
a = temp; WKA'=,`v
} else { D 7shiv|,
data[k] = temp[j--]; J3S&3+2G
b = temp[j]; Mu_i$j$vvP
} T#:F]=
} vd#,DU=p!
} LU!1s@
-'rj&x{Q)U
/** ")s!L"x
* @param data d_}a`H
* @param l HW=xvA+
* @param i "C%!8`K{a*
*/ cTZ)"^z!
private void insertSort(int[] data, int start, int len) { b'>8ZIY
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;i#LIHJ
} %IpSK 0<Sp
} <2
} ?BCy J
} MBk"KF
;'RFo?u K
堆排序: }F`beoMAkM
<l\N|+7R
package org.rut.util.algorithm.support; [UPNd!sy
X=qS"O 1
import org.rut.util.algorithm.SortUtil; P`s(kIe
Ri:p8
/** DOD6Liau{Q
* @author treeroot =.m6FRsU
* @since 2006-2-2 X<Za9
* @version 1.0 b5ie <s
*/ UPCQs",
public class HeapSort implements SortUtil.Sort{ coQ[@vu
){Z
/* (non-Javadoc) G=M] 8+h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vW.%[]
*/ .+#Lx;})
public void sort(int[] data) { 1czG55 |
MaxHeap h=new MaxHeap(); d5xxb _oE
h.init(data); KS!yT_O
for(int i=0;i h.remove(); ui.'^F<
System.arraycopy(h.queue,1,data,0,data.length); ;?9A(q_Z
} 7#4%\f+'t
"!&B4
private static class MaxHeap{ 0*(K DDv
MUof=EJg>u
void init(int[] data){ +}!DP~y+
this.queue=new int[data.length+1]; }X1.Wt=?
for(int i=0;i queue[++size]=data; M|CrBJv+F
fixUp(size); 2tr
:xi@
} $>vy(Y
} m^$5K's&
qMgfMhQ7DU
private int size=0; hN4VlNKu
'_Wt}{h
private int[] queue; #MTj)P,
, p0KLU\-
public int get() { EnscDtf(
return queue[1]; <*@~n- R$
} $^vP<
;e;\q;GP
public void remove() { >_Uj?F:
SortUtil.swap(queue,1,size--); }z'DWp=uN
fixDown(1); Tx+ p8J|Yr
} g5R,% 6
file://fixdown #4y,a_)
private void fixDown(int k) { A o3HX
int j; 1k>naf~O
while ((j = k << 1) <= size) { gg8c7d:Q
if (j < size %26amp;%26amp; queue[j] j++; GJak.,0t
if (queue[k]>queue[j]) file://不用交换 .)ST[G]WK
break; O<`R~
SortUtil.swap(queue,j,k); F!CAitxd
k = j; Dr'sIH^
}
[,7-w
} S[U/qO)m
private void fixUp(int k) { D9^7m
j?e
while (k > 1) { Z\!rH"8
int j = k >> 1; *( *z|2
if (queue[j]>queue[k]) 7Dl%UG]
break; <ZrFOb
SortUtil.swap(queue,j,k); hPPB45^
k = j; 8IWwjyRr
} *CUdGI&
} vvh.@f
;5M<j3_*
} b7'F|h^
h*'d;_(,
} }J;~P
9Y
]31$KBC
SortUtil: F50JJZ
eUs-5
L
package org.rut.util.algorithm; ;f(n.i
!QTPWA
import org.rut.util.algorithm.support.BubbleSort; $I(}r3r
import org.rut.util.algorithm.support.HeapSort; ;C_ >
import org.rut.util.algorithm.support.ImprovedMergeSort; *aG"+c6|
import org.rut.util.algorithm.support.ImprovedQuickSort; G;2[
import org.rut.util.algorithm.support.InsertSort; p"KV*D9b
import org.rut.util.algorithm.support.MergeSort; h2&y<Eg >
import org.rut.util.algorithm.support.QuickSort; Vi,Y@+4
import org.rut.util.algorithm.support.SelectionSort; Y`]rj-8f0B
import org.rut.util.algorithm.support.ShellSort; ,eK2I Ao
q2Rf@nt
/** $`Rxn*}V4#
* @author treeroot #7C6yXb%
* @since 2006-2-2 VKf6|ae
* @version 1.0 BvI 0v:
*/ CXa Ld7nMX
public class SortUtil { Oo/8Y
E@
public final static int INSERT = 1; cKpQr7]ur
public final static int BUBBLE = 2; AY@k-4
public final static int SELECTION = 3; 5Jd`
^U
public final static int SHELL = 4; ;*`_#Rn#
public final static int QUICK = 5; -R74/GBg
public final static int IMPROVED_QUICK = 6; OequU'j
public final static int MERGE = 7; )]}$
public final static int IMPROVED_MERGE = 8; t[ q3{-
public final static int HEAP = 9; ER2V*,n@
7V/Zr
public static void sort(int[] data) { I}ndRDz[
sort(data, IMPROVED_QUICK); .pKN4
} 0lf"w@/
private static String[] name={ e#m1X6$.e
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r"[L0Cbb
}; fU`T\
UhBz<>i;!
private static Sort[] impl=new Sort[]{ |DGCdB|`G
new InsertSort(), :W%4*-FP
new BubbleSort(), 7H?!RYrx
new SelectionSort(), _0*=u$~R
new ShellSort(), ,L~snR'w
new QuickSort(), 'yeh7oR
new ImprovedQuickSort(), g6`.qyVfz'
new MergeSort(), oo'iwq-\
new ImprovedMergeSort(), |} 9GHjG
new HeapSort() VHj*aBHB
}; kw;wlFU;
(Otur
public static String toString(int algorithm){ 4zwif&
return name[algorithm-1]; 5Ny0b|+p
} 6<+8}`@B>G
X;5 S
public static void sort(int[] data, int algorithm) { vS2(Q0+TZi
impl[algorithm-1].sort(data); rSbQ}O4V
} >["Kd.ye
Y& m<lnB
public static interface Sort { hN}5u"pS
public void sort(int[] data); %D. @L
} [@zkv)D6
)Jmw|B
public static void swap(int[] data, int i, int j) { 8vu2k>
int temp = data; vo.EM1x
data = data[j]; 78gob&p?
data[j] = temp; eNivlJ,K|@
} <%(f9j
} 7%X+O8