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。 (*]Y<ve
插入排序: p}uw-$O
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package org.rut.util.algorithm.support; &x #5-O'
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import org.rut.util.algorithm.SortUtil; "bH ~CG:Y
/** q<7n5kJ~
* @author treeroot 2{N0. |5
* @since 2006-2-2 0qd`Pf
* @version 1.0 `^[ra%a
*/ yhmW-#+^e
public class InsertSort implements SortUtil.Sort{ 'r
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/* (non-Javadoc) g!uhy}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +`FY
*/ z_TK
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public void sort(int[] data) { yfrgYA
int temp; 8%Lg)hvl
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7Cjrh"al"
} g9JtWgu
} fM{Vy])J
} ?K"]XXsI
tA.C"
} R,lr&;a8
t!GY>u>`
冒泡排序: k6\c^%x
#oI`j
q
package org.rut.util.algorithm.support; WYL.J5O
3#unh`3b
import org.rut.util.algorithm.SortUtil; =Ju}{ bX
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/** J/Li{xp)Lg
* @author treeroot lki(_@3
* @since 2006-2-2
8:MYeE5
* @version 1.0 Q@R8qc=*
*/ (%1*<6ka
public class BubbleSort implements SortUtil.Sort{ *:(t.iL
$fKWB5p|()
/* (non-Javadoc) kQ+5pFo3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HZNX1aQ|Q#
*/
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public void sort(int[] data) { 2+HiaYDZ
int temp; $[Ns#7K
for(int i=0;i for(int j=data.length-1;j>i;j--){ X+iULr.^`~
if(data[j] SortUtil.swap(data,j,j-1); t<tBOesQ
} y5I7pbe
} "2-TtQV!
} p-Ju&4fS
} 2bmppDk
_4+1c5Q!
} ~n?U{
RmH
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选择排序: 5VfP@{
:([,vO:
package org.rut.util.algorithm.support; _19k@a
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import org.rut.util.algorithm.SortUtil; IftPN6(Z
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/** N~Gh>{N
* @author treeroot iBQf tq7
* @since 2006-2-2 O1A*-G:X
* @version 1.0 i~4Kek6,I
*/ S1."2AxO
public class SelectionSort implements SortUtil.Sort { s*;~CH-[
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/* U4gZW]F
* (non-Javadoc) `#hy'S:e
* ]?2AFkF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XB?!V|bno
*/ KE_Ze\P
public void sort(int[] data) { pR$c<p
int temp; \hz)oC
for (int i = 0; i < data.length; i++) { U1Oq"Ij~
int lowIndex = i; |kn}iA@72p
for (int j = data.length - 1; j > i; j--) { @0G}Q
if (data[j] < data[lowIndex]) { O3Uu{'=0
lowIndex = j; 8^T' a^Wt
} ?~$y3<[
} 2-]m#}zbP
SortUtil.swap(data,i,lowIndex); {)+/w"^.
} >z2{D7
} -v:Y\=[\
*m7e>]-
} ZISR]xay
; -3M
Shell排序: @U}UC G7+
ny}?+&K
package org.rut.util.algorithm.support; \l`;]cA
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import org.rut.util.algorithm.SortUtil; )S]c'}^
XH/|jE.9^|
/** tC;D4i
* @author treeroot +1rJ ;G
* @since 2006-2-2 8w\&QX
* @version 1.0 4P.ry|2
*/ TS-[p d
public class ShellSort implements SortUtil.Sort{ (mzyA%;W
~DSle 3
/* (non-Javadoc) 2iUF%>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @{bf]Oc
*/ ,yC~{H
public void sort(int[] data) { F>&8b^v bn
for(int i=data.length/2;i>2;i/=2){ Ruf*aF(
for(int j=0;j insertSort(data,j,i); 4B|f}7%\
} pG
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} ?VJ Fp^Ra
insertSort(data,0,1); )TLDNpH?J
} uJ%ql5XDV
V; ChrmE
/** :%0Z
* @param data dCinbAQ
* @param j d00r&Mc
* @param i $HaM,
Oh;i
*/
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private void insertSort(int[] data, int start, int inc) { b_B4
int temp; Aam2Y,B
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v>,XJ 7P
} % $J^dF_0
} -v]7}[
.[
} Q>|<R[.7
Dd*C?6
} x[_+U4-/
Ft07>E$/Q^
快速排序: %rf<YZ.\
C 9DRVkjj
package org.rut.util.algorithm.support; 0_ ;-QAd
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import org.rut.util.algorithm.SortUtil; R8mL|Vb|
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/** p}h)WjC
* @author treeroot :/u
EPki
* @since 2006-2-2 #jnb6v=5v
* @version 1.0 a^,Xm(Wb}
*/ gG#M-2P
public class QuickSort implements SortUtil.Sort{ LEY$St
f\Qi()
/* (non-Javadoc) Er{yQIi0L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \KTX{qI"f
*/ oR5 'g7?
public void sort(int[] data) { (*#S%4(YX
quickSort(data,0,data.length-1); #
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} ?@tp1?)
private void quickSort(int[] data,int i,int j){ V-VR+ Ndz
int pivotIndex=(i+j)/2; QqRL>.)W
file://swap W &*0F~
SortUtil.swap(data,pivotIndex,j); gg<lWeS/3
w'}b 8m(L
int k=partition(data,i-1,j,data[j]); |_Vlw&qu+
SortUtil.swap(data,k,j); f-
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if((k-i)>1) quickSort(data,i,k-1); zh7NXTzyf
if((j-k)>1) quickSort(data,k+1,j); :X+7}!Wlo
aCQAh[T
} @<h@d_8^k
/** &kh-2#E
* @param data }s? 9Hnqa
* @param i K1jE_]@Z
* @param j xM[m(m
* @return } DoNp[`
*/ yH irm|o
private int partition(int[] data, int l, int r,int pivot) { a:C
ly9
do{ Oo$i,|$$
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Gq?JMq#
SortUtil.swap(data,l,r); ttgb"Wb%S
} Rkgpa/te"
while(l SortUtil.swap(data,l,r); 6,| !zaeS
return l; ht)J#Di
} %qNT<>c
xzh`q
} \s<L2uRj
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改进后的快速排序: Y$ZZ0m
oUoDj'JN{
package org.rut.util.algorithm.support; (/JiOg^cw
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import org.rut.util.algorithm.SortUtil; zr2oU '+
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/** T@Mrbravc
* @author treeroot T'!7jgk{:
* @since 2006-2-2 t[ cHdI
* @version 1.0 '| WY 2>/(
*/ g\:(1oY
public class ImprovedQuickSort implements SortUtil.Sort { *d b,N'rK
^\KZE|^3@
private static int MAX_STACK_SIZE=4096; b"iPuN!p
private static int THRESHOLD=10; DxoW,GW
/* (non-Javadoc) ;LD!eWSK,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6fY-DqF!
*/ /fv;`?~d*
public void sort(int[] data) { Xs}.7
int[] stack=new int[MAX_STACK_SIZE]; HtpZ5
nHyqfd<V>
int top=-1; RzhAXI=
int pivot; _Fkz^B*
int pivotIndex,l,r; h9RL(Kq{
-aPRLHR
stack[++top]=0; P.aN4 9`=
stack[++top]=data.length-1; iC2``[m"
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while(top>0){ [0MNq]gxf
int j=stack[top--]; e|>
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int i=stack[top--]; 5v5)vv.kd
8n??/VDRl
pivotIndex=(i+j)/2; Q?xA))0
pivot=data[pivotIndex]; XCvL`
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SortUtil.swap(data,pivotIndex,j); C2
4"H|D
z>]P_E~`}
file://partition @k+K_gR
l=i-1; D| |)H
r=j; L _D #
do{ L0.F}~S
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +9exap27
SortUtil.swap(data,l,r); Y]VLouzl
} pF/s5z
while(l SortUtil.swap(data,l,r); QZ&
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SortUtil.swap(data,l,j); tJ$gH;
$:|?z_@
if((l-i)>THRESHOLD){ +N}yqgE
stack[++top]=i; 4v.{C"M
stack[++top]=l-1; F/
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} UMUG~P&@
if((j-l)>THRESHOLD){ o3W@)|>
stack[++top]=l+1; #(7^V y&
stack[++top]=j; O!se-h5mW8
} O\F$~YQ
>=1A a,_tc
} 4OeH}@ a
file://new InsertSort().sort(data); U0=: `G2l
insertSort(data); E5q t~:C|
} # Rhtaq9
/** a(IUAh*mO
* @param data s+t[{i4|
*/ ZiW&*nN?M
private void insertSort(int[] data) { lk*wM?Z
int temp; `*WzHDv5p
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X2T_}{
} .cm9&&"Z
} <!=:{&d%
} ,Cd4Q7T
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} h0] bIT{
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归并排序: {8 #
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package org.rut.util.algorithm.support; 7jw5'`;)"
h<G7ocu !
import org.rut.util.algorithm.SortUtil; Q[c:A@oW
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/** Th
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* @author treeroot ;o158H$gz;
* @since 2006-2-2 &z05h<]
* @version 1.0 Q!5W x
*/ ]?T,J+S
public class MergeSort implements SortUtil.Sort{ xb2j
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WMS~Bk+!
/* (non-Javadoc) >9y!M'V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bk]
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*/ XVF!l>nE
public void sort(int[] data) { /[5\T2GI
int[] temp=new int[data.length]; >>c%Ic
mergeSort(data,temp,0,data.length-1); Ej $.x6:
} Gd`s01GKQ
~x[(1
private void mergeSort(int[] data,int[] temp,int l,int r){ sf
O{.#5<
int mid=(l+r)/2; ;{Yr|
if(l==r) return ; cqaq~
mergeSort(data,temp,l,mid); l,5isq
;m
mergeSort(data,temp,mid+1,r); PZY6
I
for(int i=l;i<=r;i++){ e5D\m g)
temp=data; /]?e^akA
} Fr-Vq=j&
int i1=l; XT\2
int i2=mid+1; ZFtJoGaR
for(int cur=l;cur<=r;cur++){ 9rIv-&7'm
if(i1==mid+1) Q9c*I,Oj
data[cur]=temp[i2++]; zDBm^ s
else if(i2>r) )LsUO#%DO
data[cur]=temp[i1++]; 1+[,eq
else if(temp[i1] data[cur]=temp[i1++]; l3+G ]C&<
else .$1S-+(kV
data[cur]=temp[i2++]; {P3gMv;
} !}5+hj!6
} Y-,S_59
2Sk hBb=d
} (w`_{%T
i6S["\h>
改进后的归并排序: pU<GI@gU
%0({MU
package org.rut.util.algorithm.support; ^)o]hE|
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import org.rut.util.algorithm.SortUtil; $h}w:AV:
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/** eep/96G
?
* @author treeroot ti 3S'K0t
* @since 2006-2-2 q^uCZnkb=
* @version 1.0 i ~)V>x
*/ -0I&dG-
public class ImprovedMergeSort implements SortUtil.Sort { jAovzZ6BL
ftQ;$@
private static final int THRESHOLD = 10; 1r5Z$3t\
/`t}5U>S_
/* xTqP`ljX
* (non-Javadoc) ;Zc0imYL
*
#Zi6N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Z~@"JLb%
*/ 9{rE7OX*A
public void sort(int[] data) { QIdml*Np?H
int[] temp=new int[data.length]; fF2]7:
mergeSort(data,temp,0,data.length-1); ,zdK%V}
} U lCw{:#F
r9<#R=r)}J
private void mergeSort(int[] data, int[] temp, int l, int r) { Rl_1g`84
int i, j, k; mE'HRv
int mid = (l + r) / 2; ~mZ[@Z
if (l == r) wod(P73?
return; yr* ~?\
if ((mid - l) >= THRESHOLD) 1;!dTh
mergeSort(data, temp, l, mid); &i6JBZ#~,
else [h>A<O
insertSort(data, l, mid - l + 1); bZZ_yc
if ((r - mid) > THRESHOLD) '}OAl
mergeSort(data, temp, mid + 1, r); Z`Jt6QgW
else VMS3Q)Ul
insertSort(data, mid + 1, r - mid); |x=(}g
I]cZcx,<q
for (i = l; i <= mid; i++) { MlLM
$Y-@
temp = data; rT[b ^l}
} ? :A%$T
for (j = 1; j <= r - mid; j++) { T hVq5
temp[r - j + 1] = data[j + mid]; 6KE64: \;
} 2_Zn?#G8dl
int a = temp[l]; j'Gezx^.<e
int b = temp[r]; 0LTsWCUQ6e
for (i = l, j = r, k = l; k <= r; k++) { ^* CKx
if (a < b) { 0d89>UB-8q
data[k] = temp[i++]; w}M)]kY
a = temp; HIvSh6|0p
} else { TxKNDu
data[k] = temp[j--]; ^`RMf5i1m
b = temp[j]; q4vHsy36
} D+w?
} J/rF4=j%xy
} YpG6p0
nd
:3b\ pEO9\
/** _^$F^}{&
* @param data q AsTiT6r
* @param l Z4{N|h?
* @param i cet|k!
*/ 0}e&ONDQ
private void insertSort(int[] data, int start, int len) { jS|jPk|I.
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4KW_#d`t
} :#UA!|nV
} KB{/L5
} UI wTf2B
} &$h#9
Bi0&F1ZC!
堆排序: LRdV_O1e6M
1R]h>'
package org.rut.util.algorithm.support; q 1A0-W#4
"rrE_
import org.rut.util.algorithm.SortUtil; iE]^6i
@y|JIBBRc
/** :Yi 4Ia
* @author treeroot "msPH<D
* @since 2006-2-2 w-Q=oEt
* @version 1.0 R78P](1\>
*/ !OOOc
public class HeapSort implements SortUtil.Sort{ /~g.j1 g
d:hX3
/* (non-Javadoc) A8ClkLC;I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J|8 u
*/ g{hbq[>X]
public void sort(int[] data) { 1V]j8
MaxHeap h=new MaxHeap(); , lBHA+@
h.init(data); 99[v/L>F
for(int i=0;i h.remove(); jtwe9
System.arraycopy(h.queue,1,data,0,data.length); =[)2DJC
} <}%gZ:Z6g
vfh\X1Ui}
private static class MaxHeap{ '=UsN_@
n,p \~Tu,
void init(int[] data){
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this.queue=new int[data.length+1]; hgdr\
F
for(int i=0;i queue[++size]=data; ?~; q r
fixUp(size); LEAU3doK;
} !6J+#
} :ZXaJ!
|+1k7S,
private int size=0; irn
}.e
-)e(Qt#ewl
private int[] queue; %,udZyO3uR
}jL4F$wC
public int get() { &Z+.FTo
return queue[1]; NDG?Xs [2
} "ZG2olOqLI
[t]q#+Zs
public void remove() { n%{oFTLCo
SortUtil.swap(queue,1,size--); Z}>+!Z
fixDown(1); )2bbG4:N
} >UV=k :Q
file://fixdown B\>3[_n
private void fixDown(int k) { _9z+xl
int j; vARZwIu^D
while ((j = k << 1) <= size) { :]`JcJ
if (j < size %26amp;%26amp; queue[j] j++; %z["TVH
if (queue[k]>queue[j]) file://不用交换 eGI&4JgJ.
break; 'uLYah
SortUtil.swap(queue,j,k); ZC&4uNUr
k = j; Bs<LJzS{V
} e!4Kl:
} 1tH#QZIT
private void fixUp(int k) { W\z<p P
while (k > 1) { uJJP<mDgA
int j = k >> 1; DjiWg(X
if (queue[j]>queue[k]) =fI0q7]ndz
break; !6*4^$i#o
SortUtil.swap(queue,j,k); q/3co86c
k = j; 7zu3o
} O9:J
^g
} A~'p~@L
p5bM/{DP;K
} z2SR/[I?
_/F}y[B7d
} V V Aw y6
9<*<-x{A17
SortUtil: 2*0n#"
L
'V*8'?
package org.rut.util.algorithm; ~tqNxlA
62>/0_m5
import org.rut.util.algorithm.support.BubbleSort; w6'8L s
import org.rut.util.algorithm.support.HeapSort; o6S`7uwJ*/
import org.rut.util.algorithm.support.ImprovedMergeSort; kk/vgte-)e
import org.rut.util.algorithm.support.ImprovedQuickSort; +/Vzw
import org.rut.util.algorithm.support.InsertSort; BWsD~Ft
import org.rut.util.algorithm.support.MergeSort; bpfSe
import org.rut.util.algorithm.support.QuickSort; @C5%`{\
import org.rut.util.algorithm.support.SelectionSort; ,jMV
#H[
import org.rut.util.algorithm.support.ShellSort; g)iw.M2
zfUkHL6
/** #M8>)o c
* @author treeroot Jl89}Sf
* @since 2006-2-2 &3Mps[u:h
* @version 1.0 &sS]h|2Z5
*/ Y\{lQMCy
public class SortUtil { Wr.~Ns<
public final static int INSERT = 1; rXnG"A
public final static int BUBBLE = 2; GC~N$!*
public final static int SELECTION = 3; +Z%8X!Q
public final static int SHELL = 4; tOw[
public final static int QUICK = 5; b/eo]Id ]
public final static int IMPROVED_QUICK = 6; avH3{V
public final static int MERGE = 7; t($z+C<
public final static int IMPROVED_MERGE = 8; 6 bt{j
public final static int HEAP = 9; 9;EY3[N
SwmX_F#_
public static void sort(int[] data) { A>}]=Ii/
sort(data, IMPROVED_QUICK); hFt ~7R
} IV$2`)[A&X
private static String[] name={ axd9b,
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" CV6W)B%Se
}; >Y&o2zJy
Re'Ek
private static Sort[] impl=new Sort[]{ '>|5
new InsertSort(), ZQrgYeQl"
new BubbleSort(), O}"fhMk
new SelectionSort(), 4(\7Or(''
new ShellSort(), ?[
vC?P
new QuickSort(), *wJ'Z4_5F
new ImprovedQuickSort(), ij1g2^],4
new MergeSort(), |}K7Q
new ImprovedMergeSort(), `H\NJ,
new HeapSort() \fD[Ej
}; Jf8AKj3
tD}HL_
public static String toString(int algorithm){ {,i='!WIm
return name[algorithm-1]; ^->vUf7PX
} ?C9>bKo*2H
TZk.h8
public static void sort(int[] data, int algorithm) { lpeo^Y}N
impl[algorithm-1].sort(data); Qmn'G4#@E
} E{6X-C[)v
=u]FKY
public static interface Sort { eFCXjM
public void sort(int[] data); -q/FxESp
} _yVF+\kQ
+l_$}UN
public static void swap(int[] data, int i, int j) { sR*JU%
int temp = data; {1`n^j(>
data = data[j]; .[#bOp*
data[j] = temp; &M^FA=J\
} f*~z|
} dCM*4B<