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。 D$_8rHc\A
插入排序: ehc<|O9tY
C"T ,MH
package org.rut.util.algorithm.support; ?2~U2Ir]:
8SD}nFQ
import org.rut.util.algorithm.SortUtil; =O^7TrM
/** cy:;)E>/
* @author treeroot 8 G?b.NE^
* @since 2006-2-2 eECj_eH-
* @version 1.0 @]3*B%t
*/ C/+nSe.
public class InsertSort implements SortUtil.Sort{ PbUI!Xqe`
#DaP=k"XV
/* (non-Javadoc) \3 KfD'L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c57b f
*/ S_!R^^ySG9
public void sort(int[] data) { s}b*5@8|tA
int temp; -g2{681`r
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [n<.fw8$b
} l Z~+u
} t61'LCEis
} @c"yAy^t
iH _"W+dq
} *7vue"I*Z
^X;JT=r
冒泡排序: Pt3[|4L
`Wwh`]#"~d
package org.rut.util.algorithm.support; 3GWrn,f
\2eFpy(
import org.rut.util.algorithm.SortUtil;
'O1.6*K
WB"$u2{|i
/** j];1"50?
* @author treeroot n^Au*'
* @since 2006-2-2 anitqy#E
* @version 1.0 xXa#J)'
*/ bVmvjY4
public class BubbleSort implements SortUtil.Sort{ fbL!=]A*3
Y_shy6"KH
/* (non-Javadoc) 8c?8X=|D7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Alh?0 Fk3)
*/ vj@V
!j?
public void sort(int[] data) { ?lG;,,jc,W
int temp; (E]"Srwh
for(int i=0;i for(int j=data.length-1;j>i;j--){ KH)pJG|NY
if(data[j] SortUtil.swap(data,j,j-1); ,yi2O]5e>!
} I!
ITM<Z$l
} &.*T\3UO
} <\xQ7|e
} @{de$ODu
\1khyF'
} ]*h&hsS0
|x[$3R1@
选择排序:
`QAh5r"
HU.1":.;
package org.rut.util.algorithm.support; <lX:eR1
R^?PAHE7
import org.rut.util.algorithm.SortUtil; j<|6s,&
=tP$re";o
/** a j_:|]j
* @author treeroot R mgxf/
* @since 2006-2-2 1#kawU6[]
* @version 1.0 $ACe\R/%
*/ >|S>J+(
public class SelectionSort implements SortUtil.Sort { d TgM"k
6 cr^<]v !
/* Uc>LFX&
-B
* (non-Javadoc) bAdAp W
* up7x)w:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QZ9M{Y/
*/ ees^O{ 8
public void sort(int[] data) { {9,R@>R
int temp; Bzwx0c2VY8
for (int i = 0; i < data.length; i++) { qIUC2,&g
int lowIndex = i; zVn* !c
for (int j = data.length - 1; j > i; j--) { GHqBnE{B
if (data[j] < data[lowIndex]) { hG[4O3jo\
lowIndex = j; f#2#g%x
} /TG|
B Eb
} Wpa$B
)xg
SortUtil.swap(data,i,lowIndex); EsNk<Ra
} PH{c,
} pIrv$^
]b!R-G!gV
} >pJ6{Ip
cEtZ}2,j
Shell排序: ?RqTbT@~
aq$62>[
package org.rut.util.algorithm.support; :0|Hcg
iu+zw[f
import org.rut.util.algorithm.SortUtil; jm~mhAE#
ge@reGfsB1
/** GZ}*r{
* @author treeroot vJzx Py|
* @since 2006-2-2 G-Zr M
* @version 1.0 V=Ww>
*/ T\.7f~3
public class ShellSort implements SortUtil.Sort{ " Tw0a!
e*6U |+kJ
/* (non-Javadoc) )62q|c9F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eF*TLI<[^I
*/ qLu8!|QT
public void sort(int[] data) { 8p3ZF@c~t
for(int i=data.length/2;i>2;i/=2){ Rqt[D @;m
for(int j=0;j insertSort(data,j,i); ejDCmD
} Rs^jk)Z:)
} "o~N42DLB%
insertSort(data,0,1); Pi^ECSzQu[
} 8dYk3sk
FL5ibg
/** |A2W8b
{]
* @param data &P{o{
* @param j I}I}K~se*
* @param i LJ:mJ#
*/ 7v.#o4nPK
private void insertSort(int[] data, int start, int inc) { $a)JCErN
int temp; hG< a
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :K!GR
} n+:m_2T
} $ $W{HsX
} ZA) SJWwD
5n-9#J$
} R*zBnHAb!
:4Id7Ce
快速排序: _wIBm2UO
&*LA_]1@
package org.rut.util.algorithm.support; d8VWi*
>}xAg7\^
import org.rut.util.algorithm.SortUtil; w50.gr7
OYQXi
/**
&
bp#1KR)
* @author treeroot ~m009
* @since 2006-2-2 f]{1ZU%4
* @version 1.0 |8&\N
*/ >F_qa=t%[
public class QuickSort implements SortUtil.Sort{ g>d7%FFn}
1 P(&GYc
/* (non-Javadoc) Ew)n~!s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H'j_<R N
*/ 401/33yBJ
public void sort(int[] data) { 60.[t9pk6
quickSort(data,0,data.length-1); Y#Sd2h,^X
} .rD#1)O
private void quickSort(int[] data,int i,int j){ |*/uN~[
int pivotIndex=(i+j)/2; -k|g04Q?
file://swap wC4AVJJ^>
SortUtil.swap(data,pivotIndex,j); G
"c&C
VPq5xSc?
int k=partition(data,i-1,j,data[j]); F}VS)
SortUtil.swap(data,k,j); dM>j<JC=
if((k-i)>1) quickSort(data,i,k-1); Cw9@2E'b
if((j-k)>1) quickSort(data,k+1,j); Q6e'0EIKC
(25^r
} -&f]Xu
/** 6&/ Ew4 e
* @param data P@o,4\;K
* @param i %M4XbSN|
* @param j <s59OdzP
* @return bahc{ZC2
*/ =0jmm(:Jh
private int partition(int[] data, int l, int r,int pivot) {
$\JQGic`
do{ A>ug'.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )- Wn'C'Z
SortUtil.swap(data,l,r); P|!/mu]
} 6_ 33*/>=c
while(l SortUtil.swap(data,l,r); 5 O{Ip-
return l; \ _-kOS
} CrQA :_Z(7
f<$K.i
} l>[QrRXiSN
ouu-wQ|(mM
改进后的快速排序: :_I
wc=
g9grfN
package org.rut.util.algorithm.support; "'&>g4F`o
d=c1WK
import org.rut.util.algorithm.SortUtil; *cI6&;y
!z"a_
/** m;$F@JJ
* @author treeroot }tl8(kjm
* @since 2006-2-2 K2cp f
* @version 1.0 |P[D2R}
*/ gpO_0U4lQ]
public class ImprovedQuickSort implements SortUtil.Sort { ,_TH@0{
+Y>cBSO
private static int MAX_STACK_SIZE=4096; NXV~[
private static int THRESHOLD=10; yC&b-y
/* (non-Javadoc) k7Be'E
BKG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) It!.*wp
*/ *BP\6"X
public void sort(int[] data) { 1z$}*`
int[] stack=new int[MAX_STACK_SIZE]; u\Erta`
k8t Na@H
int top=-1; 0W<nE[U
int pivot; hD9'`SQ
int pivotIndex,l,r; ?@,f[ U-
JE8p5WaR
stack[++top]=0; ^|:{,d#Y
stack[++top]=data.length-1; v2W"+QS}u
Ej{eq^n
while(top>0){ ^r?sgJ
int j=stack[top--]; ]Pg?(lr6)
int i=stack[top--]; :n%sU*'T
,co9f.(w
pivotIndex=(i+j)/2; V]CK'
pivot=data[pivotIndex]; VE S4x%r=
D/%b@Ls2ze
SortUtil.swap(data,pivotIndex,j); IZ(CRKCGBl
"YdDaj</
file://partition |WwFE|<
l=i-1; dBD4ogo1
r=j; \qK}(xq[
do{ Ws}kb@5
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q[,R%6&'
SortUtil.swap(data,l,r); f4\p1MYQ
} #uR q] 'P
while(l SortUtil.swap(data,l,r); l7r N
SortUtil.swap(data,l,j); 4'4s EjyA
=ty@xHr
if((l-i)>THRESHOLD){ d8y=.
stack[++top]=i; 3<.j`JB@&
stack[++top]=l-1; i+
&lMgh
} RWm Q]
if((j-l)>THRESHOLD){ @gVyLefS6g
stack[++top]=l+1; 7`'fUhB!
stack[++top]=j; ]mLTF',5
} ePcI^}{
}FdcbNsP
} Xta>
file://new InsertSort().sort(data); eMPQ|
W
insertSort(data); FoelOq6
} \]e w@C
/** /j5-
"<;.
* @param data uZ39Vx
*/ />j+7ts
private void insertSort(int[] data) { ^zluO
int temp; N=?kEX
O
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i!+3uHWu`)
} "ih>T^|
} 5Z>pa`_$2
} Qd)cFL"v
)V =K#MCK
} m^u&g&^
~9ls~$+*
归并排序: F8r455_W"
?0)XS<
package org.rut.util.algorithm.support; < $?}^
0R
@Y<ZT;J
import org.rut.util.algorithm.SortUtil; >*Z{@1*h
f8_UIdM7
/** FSZoT!
* @author treeroot Rb>RjHo S
* @since 2006-2-2 %JH_Nw.P
* @version 1.0 ~b<4>"7y.
*/ 1AEVZ@(j7
public class MergeSort implements SortUtil.Sort{ ..]X<
M[3w EX^
/* (non-Javadoc) [ BC%$Sj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ii]=C(e9
*/ ~^5n$jq
public void sort(int[] data) { `m0Uj9)#
int[] temp=new int[data.length]; t>|N4o
mergeSort(data,temp,0,data.length-1); 8&[<pbN)
} R{y{
IqJ=\
private void mergeSort(int[] data,int[] temp,int l,int r){ O0*L9C/Q
int mid=(l+r)/2; pj-HLuZR
if(l==r) return ; ua>~$`@gX
mergeSort(data,temp,l,mid); /Rcd}rO
mergeSort(data,temp,mid+1,r); %-p{?=:K
for(int i=l;i<=r;i++){ VKJ~ZIO@A
temp=data; ^9f`3~!#bc
} 6XCX#4'i%
int i1=l; w\;9&;;
int i2=mid+1; *SG2k .$
for(int cur=l;cur<=r;cur++){ ?g#t3j>zoF
if(i1==mid+1) bFxJ|
data[cur]=temp[i2++];
ex!wY
else if(i2>r) G y7x?
data[cur]=temp[i1++]; adPU)k_j:
else if(temp[i1] data[cur]=temp[i1++]; Lj* =*V
else X^ ]$/rI)
data[cur]=temp[i2++]; <hC3#dNRd
} 8PVs!?Nne
} _eeX]xSSl
v2=!*
} [?6D1b[
yzzre>F
改进后的归并排序: YhK/pt43C
Uht:wEr
package org.rut.util.algorithm.support; UNLNY,P/!)
0g uc00IN
import org.rut.util.algorithm.SortUtil; v 5ddb)
JkDZl?x5
/** 'Mhdw}
* @author treeroot t SLl'XeN
* @since 2006-2-2 V>j`
* @version 1.0 f9=X7"dzP
*/ &fhurzzAm
public class ImprovedMergeSort implements SortUtil.Sort { ]8nm9qmF<
?(UXK hs
private static final int THRESHOLD = 10; !td.ks0
_llaH
/* /
H/Ne
)r
* (non-Javadoc) =QO[zke:
* fv'P!+)t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b'"%
*/ 0c6AQP"=V
public void sort(int[] data) { -t#a*?"$w
int[] temp=new int[data.length]; o5@P>\u>
mergeSort(data,temp,0,data.length-1); 5!{g6=(
} vszAr(
t
3t6'5{
private void mergeSort(int[] data, int[] temp, int l, int r) { eL4@%
]o
int i, j, k; #{cpG2Rs
int mid = (l + r) / 2; yj9gN}+
if (l == r) PY<V
return; Y[]t_o)
if ((mid - l) >= THRESHOLD) {NqGWkGt*b
mergeSort(data, temp, l, mid); w:@M|O4`
else <:t\P.
insertSort(data, l, mid - l + 1); +ANIm^@
if ((r - mid) > THRESHOLD) S.>9tV2Ca
mergeSort(data, temp, mid + 1, r); +-137!x\q
else A0sW 9P6F
insertSort(data, mid + 1, r - mid); B y8Tw;aL
FLOJ
for (i = l; i <= mid; i++) { F=c_PQO
temp = data; u;1NhD<n
} f^)nZ:~
for (j = 1; j <= r - mid; j++) { xF31%b`z:
temp[r - j + 1] = data[j + mid]; 'J2P3t
} 3goJ(XI
int a = temp[l]; _j
tS-CnO
int b = temp[r]; aJ@qB9(ZBe
for (i = l, j = r, k = l; k <= r; k++) { ]}c=U@D,9
if (a < b) { . M$D
data[k] = temp[i++]; a{.n(M
a = temp; pD/S\E0@t
} else { 9}_f\Bs
data[k] = temp[j--]; DYl{{L8@
b = temp[j]; `Pbn
} >p:fWQ6
} O:R{4Q*5
} $QnfpM%+=
0P
>dXd)T
/** yln.E vJjD
* @param data |{"7/~*[
* @param l !A0bbJ
* @param i h:90K
*/ ir?9{t/()
private void insertSort(int[] data, int start, int len) { Ip-jqN J~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }H.vH
} cv1L!Ce,
} w;_=$L'H&G
} 7NEn+OI4
} AV!
cCQ
,"ZlY}!Gn
堆排序: +y(h/NcQ
v[GHqZ
package org.rut.util.algorithm.support; g/gLG:C
.[A S
import org.rut.util.algorithm.SortUtil; =0Sa
~`.%n7
/** |XZf:}q5:
* @author treeroot [%Xfl7;Wh
* @since 2006-2-2 9$i`B>C~
* @version 1.0 ;& +75n
*/ ?^p8]Va%
public class HeapSort implements SortUtil.Sort{ D._r@~o
T]`"
Xl8
/* (non-Javadoc) SO"P3X
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1)ne-e
*/ #Xly5J
public void sort(int[] data) { iDJ2dM}v
MaxHeap h=new MaxHeap(); sJ=B:3jS0
h.init(data); {D< ?.'
for(int i=0;i h.remove(); #n
r1- sf|
System.arraycopy(h.queue,1,data,0,data.length); M$9h)3(B
} y0]O 6.{
sqRuqUj+
private static class MaxHeap{ Vo[4\h#$
,Nh X%
void init(int[] data){ RPwSo.c4
this.queue=new int[data.length+1]; Cv33?l-8%_
for(int i=0;i queue[++size]=data; *^()el,d
fixUp(size); 4+"SG@i`W
} $la,_Sr
} Y.J$f<[R
gX<C-y6o
private int size=0; C? S %fF
*1Q?~
private int[] queue; GYO"1PM
9:s!#FYFM
public int get() { ;{RQ+ZX'[
return queue[1]; db|$7]!w
} IZLX[y
O8%/Id
public void remove() { r9[J3t*({~
SortUtil.swap(queue,1,size--); g;T`~
fixDown(1); pz+#1=b]
} ?*=Jq
file://fixdown 5B6:pH6e
private void fixDown(int k) { (B5G?cB9
int j; L\I/2aiE
while ((j = k << 1) <= size) { ~MF. M8
if (j < size %26amp;%26amp; queue[j] j++; 4<|]k?@
if (queue[k]>queue[j]) file://不用交换 "^`AS"z'
break; m{|n.b
SortUtil.swap(queue,j,k); R}FN6cH
k = j; X*@Sj;|m
} ; V8 =B8w
} t)h3G M
private void fixUp(int k) { X@rAe37h+
while (k > 1) { RWYA`
int j = k >> 1; ="4 )!
if (queue[j]>queue[k]) NT0q!r/!
break; 3;AAC (X
SortUtil.swap(queue,j,k); e!#:h4I
k = j; wuCODz@~
} t [f]
} #"l=Lv
%|Vq"MW,I
} 1ARIZ;H
^Ue>T8
} ?uQpt(
umk[\}Ip+P
SortUtil: A]1](VQ)4
,b{4GU$3
package org.rut.util.algorithm; udMq>s;
~9=g" v
import org.rut.util.algorithm.support.BubbleSort; qmhHHFjQ
import org.rut.util.algorithm.support.HeapSort; =x>KA*O1
import org.rut.util.algorithm.support.ImprovedMergeSort; MFrVGEQBRL
import org.rut.util.algorithm.support.ImprovedQuickSort; L,$9)`j
import org.rut.util.algorithm.support.InsertSort; 4?`7XJ0a
import org.rut.util.algorithm.support.MergeSort; P:G^@B3^
import org.rut.util.algorithm.support.QuickSort; CKK8 o9W
import org.rut.util.algorithm.support.SelectionSort; Y&nY]VV
import org.rut.util.algorithm.support.ShellSort; :|bPr_&U$
{>#Ya;E
/** YRFM1?*
* @author treeroot _
._'\
* @since 2006-2-2 e([}dz
* @version 1.0 Ad[-YT
*/ xpae0vw
public class SortUtil { [1Rs~T"
public final static int INSERT = 1; ]*).3<Lw
public final static int BUBBLE = 2; #H|]F86 (
public final static int SELECTION = 3; 8WMC ~
public final static int SHELL = 4; +u7mw<A
8
public final static int QUICK = 5; dXZV1e1b
public final static int IMPROVED_QUICK = 6; YIfbcR5
public final static int MERGE = 7; ]'{<O3:7
public final static int IMPROVED_MERGE = 8; z ,vjY$t:/
public final static int HEAP = 9; +]G;_/[2
?(Nls.c
public static void sort(int[] data) { cOcm9m#
sort(data, IMPROVED_QUICK); 5=eGiF;0\
} Q/':<QY
private static String[] name={ :EZTJu
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ne%ckW?ks
}; Gmc0yRN
/J^yOR9
private static Sort[] impl=new Sort[]{ O3S_P]{*ny
new InsertSort(), |#k1a:
new BubbleSort(), <Fi/!
new SelectionSort(), =4G9ev
4
new ShellSort(), Hc71 .rqS
new QuickSort(), krgsmDi7
new ImprovedQuickSort(), _15r!RZ:1
new MergeSort(), :2La,
new ImprovedMergeSort(), I_Q '+d
new HeapSort() >Py=H+d!j
}; UPH:$Fk&
n<MH\.!tM
public static String toString(int algorithm){ Xr-eDUEi
return name[algorithm-1]; "[76>\'H
} >k"/:g^t
Zx@{nVoYe~
public static void sort(int[] data, int algorithm) { EI'(
impl[algorithm-1].sort(data); N/(&&\3
} OX!9T.j
QM
O OJA
public static interface Sort { p tMysYT'
public void sort(int[] data); tR1
kn&w
} N]gdS]pP2{
ip~PF5
public static void swap(int[] data, int i, int j) { ^b'[81%
int temp = data; A >Js`s
data = data[j]; C]82Mt
data[j] = temp; Jjv,
)@yo
} 9M<{@<]dm
} d+$a5 [^9