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。 NYR:dH]N~d
插入排序: P|a|4Bb+fW
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package org.rut.util.algorithm.support; D8b9T.[(
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import org.rut.util.algorithm.SortUtil; 4OG1_6K
/** _OK!/T*FBt
* @author treeroot m5W':vM
* @since 2006-2-2 7bR[.|T
* @version 1.0 i3>_E <"9
*/ >=3oe.$)
public class InsertSort implements SortUtil.Sort{ 1TgD;qX
+77j2W_0
/* (non-Javadoc) :2~2j-m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $`L
|
*/ ^ JU#_
public void sort(int[] data) { v}@Uc-(
int temp; HYNp vK
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C~M,N|m+^
} qI[AsM+
} ^vI`#}?
} w=~X 6[+3
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} #zc$cr
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冒泡排序: T|5uywA|
.RbPO#(
package org.rut.util.algorithm.support; O81'i2MJ9
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import org.rut.util.algorithm.SortUtil; _iu^VK,}
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/** C`8.8
* @author treeroot k?_uv
* @since 2006-2-2 k:&B
b"
* @version 1.0 ]'z 5%'
*/ "}0)~,{xB
public class BubbleSort implements SortUtil.Sort{ Ls&-8
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/* (non-Javadoc) Y{8}z
ZD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JRDIGS_~
*/ c7R6.T
public void sort(int[] data) { /^`do3a}
int temp; LXRIo2ynuw
for(int i=0;i for(int j=data.length-1;j>i;j--){ o3le[6C/8=
if(data[j] SortUtil.swap(data,j,j-1); DyRU$U
} 8(H!iKHe
} =bQ\BY#
} Bey9P)_Of
} :=K+~?
(?P\;yDG
} )%hW3w
Xzqx8Kd
选择排序: bFJ>+ {#
t;t;+M|W
package org.rut.util.algorithm.support; YOY2K%o
pc;`Fz/`7
import org.rut.util.algorithm.SortUtil; )t$-/8
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/** 2hb>6Z;r]K
* @author treeroot D#d/?\2
* @since 2006-2-2 )c.!3n/pb
* @version 1.0 t]ID
*/ 0 l+Jq
public class SelectionSort implements SortUtil.Sort { k
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/* <
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* (non-Javadoc) -e_pw,5c '
* z#d*Odc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -s7a\H{~
*/ zTw<9 Nf
public void sort(int[] data) { .Z@ i z5
int temp; @
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for (int i = 0; i < data.length; i++) { OK
\9 `
int lowIndex = i; >Xxi2Vy
for (int j = data.length - 1; j > i; j--) { SjvSnb_3
if (data[j] < data[lowIndex]) { dfXBgsc6i
lowIndex = j; :\%ZTBLL
} (b7',:_U7
} iz27yXHZ~
SortUtil.swap(data,i,lowIndex); ziv*4
} e8k|%m<Sp
} PD-*rG `
9{-H/YS\_s
} ~b6c:db3
pzT`.#N:M
Shell排序: d}@n,3
@CKMJ^#|
package org.rut.util.algorithm.support; q( %)^C
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import org.rut.util.algorithm.SortUtil; Ru$%gh>v
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/** {@[#0gPH
* @author treeroot @={
qy}
* @since 2006-2-2 pwA~?$B1
* @version 1.0 =TA8]7S~U
*/ 7LiyA<
public class ShellSort implements SortUtil.Sort{ a._>?rVy
vJ>o9:(6
/* (non-Javadoc) ((6?b5[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {v2[x W
*/ Ys<z%
public void sort(int[] data) { )hD77(c
for(int i=data.length/2;i>2;i/=2){ D_BdvWSxj
for(int j=0;j insertSort(data,j,i); _CizU0S
} nd{k
D>a
} )k81
insertSort(data,0,1); OZ&SxR%q4
} .lGN
Fx
lr)9 U7
/** cvjZ$Fcc%(
* @param data Tz7|OV_W$
* @param j 5a:YzQ4
* @param i FaKZ|~Y
e
*/ <'~6L#>,<
private void insertSort(int[] data, int start, int inc) { "7w=LhzV[$
int temp; WdbHT|.Aj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [f]:hJi
} !j9(%,PR
} J$S*QCo
} q,=YKw)*
/mK]O7O7
} A$l
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快速排序: pbGv\SF
tQ)l4Y 8
package org.rut.util.algorithm.support; ;7(vqm<V2~
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import org.rut.util.algorithm.SortUtil; vg5fMH9ZZ
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/** ;ao <{i?
* @author treeroot 03!#99
* @since 2006-2-2 E4<#6q
* @version 1.0 g+-^6UG
*/ dlMjy$/T
public class QuickSort implements SortUtil.Sort{ ESuP ZB
'2SZ]
/* (non-Javadoc) U}GO* +
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _!%@V=
*/ A9z3SJ\vXl
public void sort(int[] data) { ',I$`h
quickSort(data,0,data.length-1); vQ>8>V
} Lv
*USN
private void quickSort(int[] data,int i,int j){ SGpe \P ]k
int pivotIndex=(i+j)/2; [>lQiX
file://swap &H2j3De
SortUtil.swap(data,pivotIndex,j); ?&POVf>
d26#0Gt-4i
int k=partition(data,i-1,j,data[j]); e/$M6l$Q*4
SortUtil.swap(data,k,j); ONLhQJCb
if((k-i)>1) quickSort(data,i,k-1); `*cJc6
if((j-k)>1) quickSort(data,k+1,j); :e\M~n+y
9!6u Yf+
} |wuN`;gc"
/** <4N E)!#
* @param data Q;kl-upn~8
* @param i v1 f^gde
* @param j b2~5 LZ
* @return <@;bxSUx
*/ _$KkSMA~_
private int partition(int[] data, int l, int r,int pivot) { ;.7]zn.X]2
do{ DO~~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @Suww@<
SortUtil.swap(data,l,r); kWgrsN+Z
} aUKa+"`S
while(l SortUtil.swap(data,l,r); F /"lJ/I
return l; 9-y<= )
} Xet}
J@C
T^Hq 5Oy
} ?]>;Wr
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改进后的快速排序: ,n$HTWa@0
9<5ii
package org.rut.util.algorithm.support; h#uk-7
Cm-dos
import org.rut.util.algorithm.SortUtil; |2I/r$Q
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/** x/%/MFK)>8
* @author treeroot _;:B@Z
* @since 2006-2-2 ^vTp.7o~5
* @version 1.0 ;kD
Rm'(
*/ 0I*{CVTQj
public class ImprovedQuickSort implements SortUtil.Sort { Nb\B*=4AR
2 y&k
private static int MAX_STACK_SIZE=4096; f5'vjWJ30
private static int THRESHOLD=10; :* J!
/* (non-Javadoc) +<WNAmh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z;6?,5OSc
*/ `(~oZbErM
public void sort(int[] data) { 8>DX
:`
int[] stack=new int[MAX_STACK_SIZE]; cq8JpSB(
kM3#[#6$!
int top=-1; _"82W^W i
int pivot; Nk?/vMaw
int pivotIndex,l,r; ]F"@+_E
{Vf].l:kn
stack[++top]=0; xxpzz(S ]A
stack[++top]=data.length-1; I1JF2 "{c
A9LVS&52
while(top>0){ mh#_lbe'
int j=stack[top--]; 7 M$cIWe$
int i=stack[top--]; M?I^`6IOc8
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pivotIndex=(i+j)/2; JC7:0A^
pivot=data[pivotIndex]; P@U2Q%\
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gm
SortUtil.swap(data,pivotIndex,j); *Q;?p
hr
;;Jx1Q
file://partition Pe`jNiI
l=i-1; `Yyi;!+0
r=j; |zOwC9-6
do{ aX.//T:':?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tQ`|MO&o
SortUtil.swap(data,l,r); H1$n6J
} <,Jx3yq
while(l SortUtil.swap(data,l,r); 24
RD
SortUtil.swap(data,l,j); 5]2 p>%G
Dc0CQGx9b
if((l-i)>THRESHOLD){ eU\_m5xl"
stack[++top]=i; P3TM5
stack[++top]=l-1; TmJXkR.5
} fj[Kbo 7!h
if((j-l)>THRESHOLD){ H_w?+Rig
stack[++top]=l+1; ZN!<!"~
stack[++top]=j; {}BAQ9|q
} S4
s#EDs
</_.+c [
} 0Q[;{}W}
file://new InsertSort().sort(data); 2 e&M/{
insertSort(data); "1rT>
ASWI
} [NbW"Y7
/** p+${_w>pl{
* @param data euET)Ccq
*/ 5`q#~fJ2
private void insertSort(int[] data) { 1?,C d
int temp; p,7?rI\N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Kr+#)S
} FDuIm,NI
} G'{&*]Z\:
} |?ZNGPt
?)7UqVyq
} 'AZxR4W
J{$c|
归并排序: kT:?1 w'
Tb{RQ?Nw'
package org.rut.util.algorithm.support; UtHloq(r
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import org.rut.util.algorithm.SortUtil; n_*.i1\'w
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/** =sk#`,,:
* @author treeroot {5c]\{O?[
* @since 2006-2-2
CaV)F3
* @version 1.0 Qki?
>j"
*/ L),bPfz
public class MergeSort implements SortUtil.Sort{ r"dR}S.Uf
*TPWLR ^
/* (non-Javadoc) y8dOx=c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wqgKs=y
*/ o 9d|XY_
public void sort(int[] data) { ~iq=J5IN#
int[] temp=new int[data.length]; X#o;`QM
mergeSort(data,temp,0,data.length-1); _.SpU`>/f
} [<nd+3E
aTs9lr:
private void mergeSort(int[] data,int[] temp,int l,int r){ )*aAkM
int mid=(l+r)/2; BqtN=
if(l==r) return ; Yh{5O3(;
mergeSort(data,temp,l,mid); $ SZIJe"K
mergeSort(data,temp,mid+1,r); So4#n7
for(int i=l;i<=r;i++){ $dug"[
temp=data; kkXe= f%
} w4l]rH
int i1=l; 4|DN^F~iut
int i2=mid+1; JY3!jtv
for(int cur=l;cur<=r;cur++){ f,ql8q(|J
if(i1==mid+1) nI8zT0o
data[cur]=temp[i2++]; 1D%E})B6
else if(i2>r) 8tzL.P^
data[cur]=temp[i1++]; a >k9&
w
else if(temp[i1] data[cur]=temp[i1++]; yGH')TsjD
else +P.JiH`\=
data[cur]=temp[i2++]; Is9.A_0h
} 38%"#T3#
} 7?\r9bD
B)rBM
} ovaX_d)cU
7H4kj7UK
改进后的归并排序: \jAI~|3
D!i|KI/
package org.rut.util.algorithm.support; ,q$2D,dz
/Z]hX*QR
import org.rut.util.algorithm.SortUtil; (Z8wMy&:
ed#>q;jX
/** ?<^^.Si
* @author treeroot n;y[%H!g
* @since 2006-2-2 #z}0]GJKj
* @version 1.0 m/`L3@7Tt
*/ EF;B)y=
public class ImprovedMergeSort implements SortUtil.Sort { .ZM0cwF
&"Fz)}
private static final int THRESHOLD = 10; &LQfs4}a,
,2P/[ :
/* LN9.Q'@r?
* (non-Javadoc) m;PTO$--
* ^BP4l_rO9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1+Vei<H$
*/ S5~(3I
)v
public void sort(int[] data) { GqgJ ]m
int[] temp=new int[data.length]; D3y4e8+Z'
mergeSort(data,temp,0,data.length-1); MI~QXy,
} eQIS`T
m~F ~9&
private void mergeSort(int[] data, int[] temp, int l, int r) {
jn oX%3d-
int i, j, k; ac8su0
int mid = (l + r) / 2; )4H0Bz2G
if (l == r) ,? Q1JZPy@
return; 7r pTk&`
if ((mid - l) >= THRESHOLD) sR| /s3;
mergeSort(data, temp, l, mid); biVsbxYurq
else Gi&/`vm
insertSort(data, l, mid - l + 1); 6L2Wv5C
if ((r - mid) > THRESHOLD) E&Sr+D aPD
mergeSort(data, temp, mid + 1, r); @==
"$uRw
else z]j_,3Hff
insertSort(data, mid + 1, r - mid); UN:cRH{?*
HN<e)E38
for (i = l; i <= mid; i++) { ?yA
2N;
temp = data; N<QLvZh
} WrR8TYq9D]
for (j = 1; j <= r - mid; j++) { {(h!JeQ
temp[r - j + 1] = data[j + mid]; 7*4i0{]
} 5,R<9FjW
int a = temp[l]; ~u r}6T
int b = temp[r]; x_= 3!)
for (i = l, j = r, k = l; k <= r; k++) { A64c,Uv
if (a < b) { |xpOU*k
data[k] = temp[i++]; " pL5j
a = temp; uC2 5pH"
} else { +\J+?jOC4S
data[k] = temp[j--]; 0- u,AD
b = temp[j]; CC]q\%y-_
} !@>:k3DC&
} ,Uy~O(Ft
} Po.izE!C
zhU^~4F
/** g5
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* @param data ^;@!\Rc
* @param l vQ[ TcV
* @param i E%$[*jZ
*/ e{.P2rnh
private void insertSort(int[] data, int start, int len) { xP 3>8Y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); SnoEi~Da
} ,;yaYF6|/
} UiZ1$d*
} ?y^ ix+M
} IOl0=+p
y <P1VES
堆排序: `Vh&XH\S
v&` n}lS
package org.rut.util.algorithm.support; ^{-Z3Yxd
s$/Z+"f(
import org.rut.util.algorithm.SortUtil; 4rD&Lg'
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/** MU1T="N^+
* @author treeroot ShOB"J-
* @since 2006-2-2 QtOT'<2t]
* @version 1.0 RG-,<G`
*/ ST\d-x
public class HeapSort implements SortUtil.Sort{ T"E%;'(cp)
3.%jet1
/* (non-Javadoc) PH!rWR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C0L(ti;
*/ yI's=Iu`
public void sort(int[] data) { l+?sR<e?!
MaxHeap h=new MaxHeap(); sA+( |cEh
h.init(data); kFi=^#J{
for(int i=0;i h.remove(); d^`n/"Ice
System.arraycopy(h.queue,1,data,0,data.length); 3UJSK+d\
} pwV{@h!
D+*_iM6[-
private static class MaxHeap{ K Z0%J5
>n>gX/S<C
void init(int[] data){ 6!RKZj)
this.queue=new int[data.length+1]; 8HdjZ!
for(int i=0;i queue[++size]=data; ,m)YL>k
fixUp(size); ~uJO6C6A
} i\\,Z
L
} MUp{2_RA
Y>K3.*.
private int size=0; ;*e$k7}F
I0sw/,J/Z
private int[] queue; 8FBXdk?A
wQX%*GbL2
public int get() { 0f,Ii_k bT
return queue[1]; <:~'s]`zf
} d'p@[1/
nAyyjd3!S
public void remove() { lUHpGr|U%
SortUtil.swap(queue,1,size--); E\~!E20^
fixDown(1); -[7S.
} h>n<5{zqM
file://fixdown xQ8?"K;iX
private void fixDown(int k) { \eS-wO7%
int j; _({K6adb
while ((j = k << 1) <= size) { 0EUC8Ni
if (j < size %26amp;%26amp; queue[j] j++; '>UQsAvm
if (queue[k]>queue[j]) file://不用交换 AkBEE
break; m# I
SortUtil.swap(queue,j,k); G88g@Exk
k = j; -}Gk@=$G
} ;5=5HYx%
} tR-rW)0K3Q
private void fixUp(int k) { =bb )B(
while (k > 1) { Qs\!Kk@
int j = k >> 1; [\)irCDv
if (queue[j]>queue[k]) gOn^}%4.I
break; (%|L23
SortUtil.swap(queue,j,k); 8MCSU'uQ
k = j; OyTp^W`&
} <{A |Xs
} UC?i>HsJrX
(k>I!Z/&2
} M!]g36h[
U("m}^
} |?<r
|dk9/xdX
SortUtil: = k>ygD_
o%?~9rf]]
package org.rut.util.algorithm; M\be a
8f-B-e?k
import org.rut.util.algorithm.support.BubbleSort; RQd5Q.
import org.rut.util.algorithm.support.HeapSort; ~@EBW3>~5
import org.rut.util.algorithm.support.ImprovedMergeSort; Rs1JCP=d8
import org.rut.util.algorithm.support.ImprovedQuickSort; "\x\P)j0>
import org.rut.util.algorithm.support.InsertSort; ?1/wl;=fm
import org.rut.util.algorithm.support.MergeSort; PD@@4@^
import org.rut.util.algorithm.support.QuickSort; SR&'38UCe
import org.rut.util.algorithm.support.SelectionSort; *qL"&h5W
import org.rut.util.algorithm.support.ShellSort; w_^g-P[o-
Ck^jgB.7
/** n ,CMGe^:
* @author treeroot v/}hy$7
* @since 2006-2-2 C-L[" O0[
* @version 1.0 M9dUo7
*/ sBWLgJz?C
public class SortUtil { N^By#Z
public final static int INSERT = 1; YDo,9
public final static int BUBBLE = 2; EyPF'|Qtn
public final static int SELECTION = 3; Z<6Fq*I
public final static int SHELL = 4; e(sV4Z~
public final static int QUICK = 5; ;PG,0R`Z;
public final static int IMPROVED_QUICK = 6; ~0XV[$`L
public final static int MERGE = 7; j?9fb
public final static int IMPROVED_MERGE = 8; 4Nz]LK%@
public final static int HEAP = 9; \J3n[6;
K@+(6\6I
public static void sort(int[] data) { rJ_fg$.<
sort(data, IMPROVED_QUICK); '5m`[S-IU
} &&{_T4
private static String[] name={ [[9XqD]
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" mRC6m
K>
}; Z\P&i#
tz"zQC$
private static Sort[] impl=new Sort[]{ b>"=kN/
new InsertSort(), B3iU#
new BubbleSort(), 9W@Tf
new SelectionSort(), 1r;.r|
new ShellSort(), b0"R |d[i
new QuickSort(), LzJNQd'
new ImprovedQuickSort(), !)TO2?,^
new MergeSort(), :p,DAt}
new ImprovedMergeSort(), Zp*0%x!e
new HeapSort() F
B7.b
}; 7Yd]#K{$
{pW(@4U
public static String toString(int algorithm){ / qo`vk A
return name[algorithm-1]; \hT=U*dMR
} # ~T
KC|G
k->cqtG
public static void sort(int[] data, int algorithm) { 4mJ[Wr\y
impl[algorithm-1].sort(data); p(]o#$ 6[
} )rFcfS+/
;NeN2 |I]
public static interface Sort { 74q|FQ
public void sort(int[] data); 7ZRLSq'S
} {QRrAi
I4"U/iL51
public static void swap(int[] data, int i, int j) { QnNddCiu=
int temp = data; p6e9mSs
data = data[j]; U:o(%dk
data[j] = temp; L=."<,\
} $*[-kIy
} 4P\?vz"