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。 O\|C,Epm
插入排序: d[s;a.
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package org.rut.util.algorithm.support; 5QqJI#4~
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import org.rut.util.algorithm.SortUtil; ?)A]q'
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/** E[SV*1)
* @author treeroot 4@/ q_*3o
* @since 2006-2-2
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* @version 1.0 ^
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*/ DBj;P|L_
public class InsertSort implements SortUtil.Sort{ _ 4~ng#M*
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/* (non-Javadoc) U6/m_`nc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \j,v/C@c-
*/ 0Zc*YdH
public void sort(int[] data) { H3
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int temp; C$N4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [oQ`HX1g
} /7UovKKbz
} "<cB73tY
} ~)!V8
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} #Qtg\X
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冒泡排序: >K_$[qP3
/o<}]]YBF
package org.rut.util.algorithm.support; ,wry u|7"$
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import org.rut.util.algorithm.SortUtil; >.!5M L\
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/** 42n@:5`{+
* @author treeroot ~aauW?
* @since 2006-2-2 h 7(H%(^_
* @version 1.0 ]X>QLD0W
*/ +(QMy&DtS
public class BubbleSort implements SortUtil.Sort{ f{+LCMbC6
Vz7w{HY
/* (non-Javadoc) =`7#^7Q9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J{GFb
*/ Ovl?j&8
public void sort(int[] data) { )$gsU@H -
int temp; +(I`@5
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4y]: Gqz~
if(data[j] SortUtil.swap(data,j,j-1); v$.JmL0^J
} Z3X&<Y5
} s60:0 >
} 6g~o3
} i-i}`oN
MrKU,-
} |mQtjo
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选择排序: ery?G-
ZZ]OR;8
package org.rut.util.algorithm.support; @MlU!oR&
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import org.rut.util.algorithm.SortUtil; "a0u-}/D
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/** V(''p{
* @author treeroot ig.6[5a\
* @since 2006-2-2 .^)C:XiW
* @version 1.0 LAK-!!0X
*/ !"Oj$c
-
public class SelectionSort implements SortUtil.Sort { ^?K?\
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/* :YRzI(4J
* (non-Javadoc) U!;aM*67
* "dLMBY~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lkSz7dr@
*/ (8@hF#N1
public void sort(int[] data) { :ET3&J
L
int temp; MoKXl?B<
for (int i = 0; i < data.length; i++) { |;Se$AdT#
int lowIndex = i; )]>i>
for (int j = data.length - 1; j > i; j--) { o$H Jg
if (data[j] < data[lowIndex]) { |`94W j<
lowIndex = j; .Kh(F6
s
} ok\/5oz
} aoakTi!}
SortUtil.swap(data,i,lowIndex);
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} z!1/_]WJ,
} E-tNB{r@
+Qi52OG
} @8Q+=abz
.
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Shell排序: k`2B9,z
yZ?_q$4kEI
package org.rut.util.algorithm.support; k^dCX+
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import org.rut.util.algorithm.SortUtil; 8x^H<y=O
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/** v_@#hf3
* @author treeroot 3 R:7bex
* @since 2006-2-2 Qq FfR#
* @version 1.0 xV n]m9i
*/ !s[j1=y
public class ShellSort implements SortUtil.Sort{ 6(<~1{
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]=86[A-2N
/* (non-Javadoc) UTK.tg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;qVEI/
*/ xeP;"J}
public void sort(int[] data) { {HRxyAI!
for(int i=data.length/2;i>2;i/=2){ /m{?o
for(int j=0;j insertSort(data,j,i); G|PIH#
} J,^pt Ql
} K3r>nGLBo
insertSort(data,0,1); dn)tP6qc/
} J\dhi{0
k+Ma_H`
/** G$x["
* @param data 4}_w4@(
* @param j H'= i
* @param i xU\:Vid+A
*/ 1O3<%T#LOZ
private void insertSort(int[] data, int start, int inc) { c;|&>Fp
int temp; pqQdr-aR=
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <>*''^
} l&^[cR
} _7j/[
} 4Utx
9^
#;*ai\6>vD
} A^Hp #b@
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快速排序: %wjU^Urya
TNPGw!
package org.rut.util.algorithm.support; FO'.
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import org.rut.util.algorithm.SortUtil; Ff#N|L'9_
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/** ubC JZ"!
* @author treeroot aXK%m
* @since 2006-2-2 E Pd.atA
* @version 1.0 U5ud?z()OA
*/ f s"V'E2a
public class QuickSort implements SortUtil.Sort{ p_40V%y^
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/* (non-Javadoc) _]r)6RT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wgR@M[]o;
*/ bd 1J#V]
public void sort(int[] data) { L pi_uK
quickSort(data,0,data.length-1); NW>:Lz
?"
} J0WXH/:
private void quickSort(int[] data,int i,int j){ ohtn^o;C}
int pivotIndex=(i+j)/2; _2!e!Z
file://swap MdoWqpC
SortUtil.swap(data,pivotIndex,j); 9B;Sk]y
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int k=partition(data,i-1,j,data[j]); sK9h=J;F/
SortUtil.swap(data,k,j); T#^6u)
if((k-i)>1) quickSort(data,i,k-1); "KTnX#<0
if((j-k)>1) quickSort(data,k+1,j); {FmFu$z+[
u/:Sf*;?
} "vRqtEBO@
/** \utH*;J|x
* @param data dv9Pb5i
* @param i nu9k{owB T
* @param j ]aW.b_7<9
* @return TtjSLkF
*/ y`@4n.Q
private int partition(int[] data, int l, int r,int pivot) { B l/e>@M
do{ z` ?xS
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2u;fT{(
SortUtil.swap(data,l,r); YIk6:W{
} |v'5*n9
while(l SortUtil.swap(data,l,r); +p}Xmn
return l; "u]Fl+c
} 8}0y)aJ
wG[l9)lz
} F5Q. Vh
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改进后的快速排序: PaeafL65=
Pk]9.e1_
package org.rut.util.algorithm.support; Ay6rUN1ef
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import org.rut.util.algorithm.SortUtil; `V_/Cz_}D
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/** %mvx}xV
* @author treeroot NGQIoKC
* @since 2006-2-2 ziGL4c0p
* @version 1.0 l45F*v]^
*/ i&Cqw~.H
public class ImprovedQuickSort implements SortUtil.Sort { tJ_@AcF
4sE=WPKF#
private static int MAX_STACK_SIZE=4096; -^
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private static int THRESHOLD=10; $I0a2Z=dP
/* (non-Javadoc) EGr5xR-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &ziB#(&:H
*/ *7V{yK$O|
public void sort(int[] data) { {Om3fSk:
int[] stack=new int[MAX_STACK_SIZE]; ^g){)rz|
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int top=-1; E
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int pivot; ;RZa<2
int pivotIndex,l,r; ^a 5~FI:
jtpN o~O
stack[++top]=0; &'2l_b
stack[++top]=data.length-1; kV%y%l(6
,^66`C[G
while(top>0){ ywtDz8!^u
int j=stack[top--]; 2m}]z.w#
int i=stack[top--]; &|FG#.2yw
JJOs
L!@
pivotIndex=(i+j)/2; 2-2LmxLG
pivot=data[pivotIndex]; 3lgyX/?o
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SortUtil.swap(data,pivotIndex,j); / ^M3-5@Q
XxQ2g&USk
file://partition =,Um;hU3r
l=i-1; Ds5&5&af
r=j; ^o<Nz8
do{ F+^[8zK^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]@]"bF!Dn
SortUtil.swap(data,l,r); t$D[,$G9
} ]>!_OCe&
while(l SortUtil.swap(data,l,r); V0B4<TTAo~
SortUtil.swap(data,l,j); .kDCcnm
]V\g$@
if((l-i)>THRESHOLD){ 52Ffle8
stack[++top]=i; j*\MUR=
stack[++top]=l-1; yG_.|%e
} ?&^l8gE
if((j-l)>THRESHOLD){ >%A=b}VS
stack[++top]=l+1; Y{{,62D
stack[++top]=j; l%w|f`B:
} *Y>'v%
fkG"72 95A
} L7="! I
file://new InsertSort().sort(data); 3CL:VwoW
insertSort(data); RS=7W._W
} @WUCv7U
/** Gwk@X/q
* @param data :{i mRa-
*/ #f@53Pxb
private void insertSort(int[] data) { 9Ky,oB
int temp; $>`8'I
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XwGJ 8&N
}
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} #Z5~a9rO
} "lMWSCas
PSvRO%&
} 32J
3c"{Wu-}
归并排序: &$
9bC't6
eVJL|uI|
package org.rut.util.algorithm.support; ON^u|*kO
oOvbel`;
import org.rut.util.algorithm.SortUtil; }zLE*b,
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/** }?$Mh)
* @author treeroot c73ZEd+j
* @since 2006-2-2 {K}+$jzGVt
* @version 1.0 E_#&L({|@
*/ F U%b"gP^
public class MergeSort implements SortUtil.Sort{ JaTW/~ TU
dDTt _B
/* (non-Javadoc) i;7jJ(#V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (yVI<Os{a
*/ uDUSR+E>
public void sort(int[] data) { n$K_KU v
int[] temp=new int[data.length]; q2Dg~et
mergeSort(data,temp,0,data.length-1); r>OE[C69
} CK%W+";
9w|q':<
private void mergeSort(int[] data,int[] temp,int l,int r){ _t7A'`Dh]
int mid=(l+r)/2; 2I5@zm
ea
if(l==r) return ; iWEYSi\)n
mergeSort(data,temp,l,mid); TW$^]u~v
mergeSort(data,temp,mid+1,r); C$5x*`y
for(int i=l;i<=r;i++){ aeIR}'H|
temp=data; 3a =KgOvp
} >zhbOkR9c
int i1=l; w%kxY5q
int i2=mid+1; 3.Y/ZWON
for(int cur=l;cur<=r;cur++){ KV Mm<]Z
if(i1==mid+1) 1L3L!@
data[cur]=temp[i2++]; P*_Q 8I)Y
else if(i2>r) Y?Xs
Z
data[cur]=temp[i1++]; ;s{rJG{inG
else if(temp[i1] data[cur]=temp[i1++]; Rv }e+5F
else 6B&':N98
data[cur]=temp[i2++]; 0q81H./3
} i-$]Tg
} /Ue~W,|
8uNq353
} |#"<{RS+w
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改进后的归并排序: ,?728pfw
mI-$4st]
package org.rut.util.algorithm.support; P@)zNik[
:9.ik
import org.rut.util.algorithm.SortUtil; #49,7OBU
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/** 2 g,UdG
* @author treeroot }k$2r3
* @since 2006-2-2 b8(94t|;U
* @version 1.0 @#;2P'KL
*/ 40+~;20
public class ImprovedMergeSort implements SortUtil.Sort { ><+wH b
;>bcI).
private static final int THRESHOLD = 10; e~oI0%xl^
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/* v="i0lL_
* (non-Javadoc) !c/G'se
* C0J/FFBQ ^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T|[zk.8=E
*/ .}C
pX
public void sort(int[] data) { 0@k)Cz[0;
int[] temp=new int[data.length]; &c%;Lo
mergeSort(data,temp,0,data.length-1); bkTk:-L5:
} eh`n?C
8tJB/Pw`S
private void mergeSort(int[] data, int[] temp, int l, int r) { 4CCtLHb
int i, j, k; hX;JMQ915
int mid = (l + r) / 2; (hr*.NS#
if (l == r) yy8h8{=g
return; k <SFl
if ((mid - l) >= THRESHOLD) 1ayL*tr
mergeSort(data, temp, l, mid); 3@7IY4>o
else _9*3Mr)2N
insertSort(data, l, mid - l + 1); \iVb;7r)9:
if ((r - mid) > THRESHOLD) O!xul$9
mergeSort(data, temp, mid + 1, r); ky R=U`OW
else Qu]F<H*Y|
insertSort(data, mid + 1, r - mid); gqw
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PaIE=Q4gJ
for (i = l; i <= mid; i++) { s1~&PH^
temp = data; I8M^]+c
} FK
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for (j = 1; j <= r - mid; j++) { =zBc@VTp
temp[r - j + 1] = data[j + mid]; ?9W2wqN>o
} (m:ktd=x
int a = temp[l]; A}"aH
int b = temp[r]; D6z*J?3^#&
for (i = l, j = r, k = l; k <= r; k++) { N#C,q&;
if (a < b) { pT ]: TRPS
data[k] = temp[i++]; df9jT?l
a = temp; s&.VU|=VQ@
} else { 2":{3=oW~
data[k] = temp[j--]; 'TwvkU"
b = temp[j]; :^bjn3b
} 85gdmla@9
} Ynxzkm S
} Z2@_F7cXt
hsCts@R
/** Wy:xiP
* @param data
7j,u&%om
* @param l HnlCEW,^o
* @param i A4Sb(X|j
*/ >n(Ga9E
private void insertSort(int[] data, int start, int len) { wg.TCT2
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,2>nr goM
} K."%PdC
} qL;u59
} nA1059B
} 5oOF|IYi
4s_|6{ANS
堆排序: t?l0L1;
0cF+4,5
package org.rut.util.algorithm.support; d,y%:F 4
+5<]s+4T
import org.rut.util.algorithm.SortUtil; B QxU~s
1^v?Ly8
/** SJ0IEPk
* @author treeroot a]]>(Txc
* @since 2006-2-2 |i~Ab!*8n
* @version 1.0 oEJYAKN
*/ P&kjtl68Y
public class HeapSort implements SortUtil.Sort{ p 3`odmbN
x )w6
/* (non-Javadoc) u#bd*(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @hV F}ybp
*/ .e Jt]K
public void sort(int[] data) { +!6dsnr8
MaxHeap h=new MaxHeap(); q'9}Hz
h.init(data); P-Up v6J3
for(int i=0;i h.remove(); I
7 B$X=
System.arraycopy(h.queue,1,data,0,data.length); lk(.zYaaN
} P/?'ea
UB9n7L(@c
private static class MaxHeap{ }.S4;#|hw
{vf4l4J(
void init(int[] data){ -ufO,tJRLL
this.queue=new int[data.length+1]; ibj3i7G?
for(int i=0;i queue[++size]=data; =[ZuE0c
fixUp(size); &:@)roCR
} -1z<,IN+
} ,z@"pI
b
V/,@hv`+
private int size=0; z%0'v`7
uW{;@ 7N
private int[] queue; lKT<aYX
vCe]iB
public int get() { #[LnDU8>9
return queue[1]; HQ0fY
} H4Lvw8G
+#@)C?G,TF
public void remove() { sc)}r_|g
SortUtil.swap(queue,1,size--); 'jr[
?WQ
fixDown(1); ^$VH~i&
} Bkaupvv9S
file://fixdown s%OPoRE
private void fixDown(int k) { 7}%Z>
int j; xC}9W6
while ((j = k << 1) <= size) { ze_q+Z
if (j < size %26amp;%26amp; queue[j] j++; tQYkH$e`/{
if (queue[k]>queue[j]) file://不用交换 qy\Z2k
break; kS)azV
SortUtil.swap(queue,j,k); tA{B~>
k = j; *rH#k?
} )Bo]+\2
} ^(c.AYI
private void fixUp(int k) { gAxf5A_x)
while (k > 1) { "'@>cJ=
int j = k >> 1; *^=zQ~
if (queue[j]>queue[k]) 8nKb
mjM
break; >"?jW@|g
SortUtil.swap(queue,j,k); >\s8S}p
k = j; U9/6F8D1Y1
} p?idl`?^3
} ih\=mB
ra]lC7<H
} )wdTs>W7
79MF;>=tV
} Gw@]w;ed
-:~"c@D
SortUtil: MIx,#]C&
]mZN18#
package org.rut.util.algorithm; \&#IK9x{
:rzq[J^
import org.rut.util.algorithm.support.BubbleSort; hgPzx@
import org.rut.util.algorithm.support.HeapSort; glI4Jb_[
import org.rut.util.algorithm.support.ImprovedMergeSort; s1kG:h2|$
import org.rut.util.algorithm.support.ImprovedQuickSort; q>5K:5
import org.rut.util.algorithm.support.InsertSort; NO'37d
import org.rut.util.algorithm.support.MergeSort; QXLHQ_V
import org.rut.util.algorithm.support.QuickSort; zNRR('B?
import org.rut.util.algorithm.support.SelectionSort; HpGI\s
import org.rut.util.algorithm.support.ShellSort; Zv|TvlyT"
#Et%s8{
/** a]4h5kJ';
* @author treeroot 'fS&WVR?
* @since 2006-2-2 i8Xz'Sw07
* @version 1.0 n5s2\(
*/ 6*r#m%|
public class SortUtil { Zog&:]P'F
public final static int INSERT = 1; kC8M2 |L
public final static int BUBBLE = 2; 8H@] v@Z2
public final static int SELECTION = 3; /c|X:F!;X#
public final static int SHELL = 4; RTQtXv6mD
public final static int QUICK = 5; -F~"W@9r
public final static int IMPROVED_QUICK = 6; 4uy:sCmu
public final static int MERGE = 7; 9ymx;
public final static int IMPROVED_MERGE = 8; W\1V`\gF
public final static int HEAP = 9; 2uT"LW/(H
8D:0Vhx\I
public static void sort(int[] data) { Y:#nk.}>
sort(data, IMPROVED_QUICK); kT1 2
} Dhze2q)o
private static String[] name={ Ra)AQ
n
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _/[}PQC6G
}; ,qu7XFYrY
z;Yo76P
private static Sort[] impl=new Sort[]{ L{F[>^1Sb
new InsertSort(), E
E^lw61
new BubbleSort(), DNu-Ce%
new SelectionSort(), HD!2|b~@
new ShellSort(), eo&^~OVT
new QuickSort(), q. s'z}
new ImprovedQuickSort(), L&LAh&%{2
new MergeSort(), dBb
&sA-A
new ImprovedMergeSort(), P0<)E
new HeapSort() H{U(Rt]K
}; 5[0W+W
,?oC+9w
public static String toString(int algorithm){ ./i5VBP5
return name[algorithm-1]; `NB6Of*/
} w0&|8y
Y{D?&x%yq
public static void sort(int[] data, int algorithm) { `;HZO8
impl[algorithm-1].sort(data); # ~(lY}
} %@MO5#)NI
f~P~%
public static interface Sort { 3{H&{@Q
public void sort(int[] data); 9(pF!}1%\
} j^6,V\;l
AOv>O52F/Q
public static void swap(int[] data, int i, int j) { vB Vg/
int temp = data; mTBSntZx
data = data[j]; `;)op3A'
data[j] = temp; +HkEbR'G0
} .kc{)d*0K
} }DFZ9,gQ