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。 L}b.ulkMD
插入排序: N!=v4f
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package org.rut.util.algorithm.support; 3M7/?TMw{6
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import org.rut.util.algorithm.SortUtil; uyWunpT
/** 2- h{N
* @author treeroot q:0N<$63
* @since 2006-2-2 783,s_
* @version 1.0 >\#*P'y`d
*/ *n
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public class InsertSort implements SortUtil.Sort{ C2I_%nU Z1
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/* (non-Javadoc) &`r-.&Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -3*]G^y2
*/ p27~>xQ
public void sort(int[] data) { P|E| $)m
int temp; 8q!]y6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1(R}tRR7 R
} ZvX*t)VjTz
} ECuH%b^,
} _6hQ %hv8
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} 'GWN~5
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冒泡排序: .!3|&V'<
P3=G1=47U
package org.rut.util.algorithm.support; RSRS wkC
{\1?ZrCI&
import org.rut.util.algorithm.SortUtil; \?-<4Bc@
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/** J!(<y(l
* @author treeroot G>}255qY
* @since 2006-2-2 .2t4tb(SUw
* @version 1.0 AV]2euyn
*/ :eCwY
public class BubbleSort implements SortUtil.Sort{ JyK3{wYS
3;9^
/* (non-Javadoc) cqkV9f8Ro
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V2EUW!gn
2
*/ !9e=_mY
public void sort(int[] data) { G e@{_
int temp; `/+>a8
for(int i=0;i for(int j=data.length-1;j>i;j--){ h,N?Ab'S
if(data[j] SortUtil.swap(data,j,j-1); i1d'nxk6
} EME|k{W
} ;JT-kw6l5K
} O=t_yy
} Ll't>)
YkSl^j[DHs
} +Kc
&r/Mi%
选择排序: $%d*@'c
T?0eVvM
package org.rut.util.algorithm.support; BDDlQci38
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import org.rut.util.algorithm.SortUtil; 9.-S(ZO
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/** 'IQ0{&EI
* @author treeroot H*R"ntI?w
* @since 2006-2-2 }($5k]]clP
* @version 1.0 IEi^kJflU
*/ uGG t\.$]s
public class SelectionSort implements SortUtil.Sort { C}Cs8eUn
=UQ3HQD
/* \}b%E'+_T
* (non-Javadoc) vvMT}-!
* CAhXQ7w'Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r l%
*/ 7JH6A'&
public void sort(int[] data) { wwZ ,;\
int temp; ~<bZ1TD
for (int i = 0; i < data.length; i++) { \M^bD4';>
int lowIndex = i; k4;7<j$ir
for (int j = data.length - 1; j > i; j--) { 4+8@`f>s
if (data[j] < data[lowIndex]) { g3y~bf
lowIndex = j; {;1\+f
} H7n>Vx:L-
} 8GUX{K
SortUtil.swap(data,i,lowIndex); C1)!f j=
} k y7Gwc
} wi=v}R_
vk^xT
} n 7[V&`e_
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Shell排序: S,UDezxg
v!5 `|\
package org.rut.util.algorithm.support; a1lh-2xX
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import org.rut.util.algorithm.SortUtil; kDxFloK
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/** *GPiOA
a
* @author treeroot 8lrpve
* @since 2006-2-2 #X1ND
* @version 1.0 <bWG!ZG
*/ TvbE2Q;/UL
public class ShellSort implements SortUtil.Sort{ DvvK^+-~
g2_"zDiw2
/* (non-Javadoc) onzxx4bax
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ON(kt3.h
*/ qX{+oy5
public void sort(int[] data) { F JyT+
for(int i=data.length/2;i>2;i/=2){ q_58;Bv
for(int j=0;j insertSort(data,j,i); (!WD1w
} nNn:-
} :vbW
insertSort(data,0,1); O\r0bUPE
} {P_.~0pc*
6i/(5 nQ
/** .ioEIs g
* @param data b]KBgZ
* @param j R\[e!g*I
* @param i ~4'$yWG
*/ FZnw0tMq
private void insertSort(int[] data, int start, int inc) { 3!]rmZ-W
int temp; xA*<0O\V
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); > ~O.@|
} Gd85kY@w7
} JWxwJex
} ?Ir:g=RP*
ym1Y4,
}
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快速排序: 7%M_'P4 V
3Y$GsN4ln
package org.rut.util.algorithm.support; Q=$2c[Uk
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import org.rut.util.algorithm.SortUtil; vFmZ<C'
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/** es7=%!0
* @author treeroot &oMh]Z*:
* @since 2006-2-2 "w<#^d_6
* @version 1.0 R:qW;n%AF
*/ ZN0P:==
public class QuickSort implements SortUtil.Sort{ (E1~H0^
|FRg\#kf%
/* (non-Javadoc) [nq@m c~<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v]UwJz3<
*/ V0mn4sfs
public void sort(int[] data) { Ny/MJ#Lq
quickSort(data,0,data.length-1); $F.a><1rY
}
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private void quickSort(int[] data,int i,int j){ dM@1l1h/
int pivotIndex=(i+j)/2; C0Z=~Q%
file://swap d<Tc7vg4|U
SortUtil.swap(data,pivotIndex,j); {'H(g[k
\ Cj7k^
int k=partition(data,i-1,j,data[j]); f|gg
SortUtil.swap(data,k,j); aN3;`~{9
if((k-i)>1) quickSort(data,i,k-1); ?a]mDx>xh
if((j-k)>1) quickSort(data,k+1,j); )4 ;`^]F
+=)+'q]S
} jebx40TA3
/** qH_Dc=~la
* @param data R4d=S4i
* @param i a 1*p*dM#
* @param j S+lqA-:
* @return "0TZTa1e
*/ !;'=iNOYR
private int partition(int[] data, int l, int r,int pivot) { lp8v0e4
do{ dj%!I:Q>u
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W2!+z{:m
SortUtil.swap(data,l,r); A3*!"3nU
} X@FN|Rdh
while(l SortUtil.swap(data,l,r); qqU 64E
return l; mX|ojZ
} DtnEi4h,
],].zlN
} I%Z
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改进后的快速排序: e+K^Aq
BJ(M2|VH
package org.rut.util.algorithm.support; Wc
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import org.rut.util.algorithm.SortUtil; g9F?z2^
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/** \l3h0R
* @author treeroot =Fl^`*n
* @since 2006-2-2 "kF g
* @version 1.0 e96k{C`j0
*/ &cTU
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public class ImprovedQuickSort implements SortUtil.Sort { FVBYo%Ap
x,V r=FB
private static int MAX_STACK_SIZE=4096; hpk7 Anp
private static int THRESHOLD=10; R G`1en
/* (non-Javadoc) U
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P0b7S'a4!
*/ $ME)#(
public void sort(int[] data) { 1BEHw?dLU
int[] stack=new int[MAX_STACK_SIZE]; ?
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9cm#56
int top=-1; {(}By/_
int pivot; Z/J y'$x
int pivotIndex,l,r; #$y?v%^
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stack[++top]=0; Ga'swP=hf
stack[++top]=data.length-1; <9
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while(top>0){ +nGAz{&@r%
int j=stack[top--]; Y6d@h? ht
int i=stack[top--]; qIqM{#' ^
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pivotIndex=(i+j)/2; Lj;2\]
pivot=data[pivotIndex]; <0?W{3NqI
t
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SortUtil.swap(data,pivotIndex,j); CJI~_3+K
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file://partition ,7b[!#?8
l=i-1; OZ!^ak
r=j; 4E?Oky#}-
do{ 3f;>" P}
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); S21,VpW\
SortUtil.swap(data,l,r); FxtI"g\0
} POR\e|hRT]
while(l SortUtil.swap(data,l,r); VLN_w$iEq
SortUtil.swap(data,l,j); e?f IXk~b
#R
RRu2
if((l-i)>THRESHOLD){ 7=, ; h
stack[++top]=i; lb1Xsgm{
stack[++top]=l-1; 2f_:v6
} s"?3]P
if((j-l)>THRESHOLD){ b>9>uC@J15
stack[++top]=l+1; }:#P)8/v>%
stack[++top]=j; =mmWl9'mJ
} S 6,.FYH
B?o7e<l[
} Xb,3Dvf
file://new InsertSort().sort(data); BFW&2
insertSort(data); GvlS%
} wH6aAV~1
/** 1@=po)Hnp
* @param data !5?<% *
*/ da~],MN
private void insertSort(int[] data) { tFl"n;~T
int temp; KCDE{za
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P
L+sR3bR
} s&J]zb`
} R_xRp&5
} .w,q0<}
HE_8(Ms;8
} Vs{|xG7WD
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归并排序: G 9vpt M
G9@0@2aY8
package org.rut.util.algorithm.support; @AuO`I@p=
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import org.rut.util.algorithm.SortUtil; !$>R j
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/** eKqk= (
* @author treeroot EAby?51+
* @since 2006-2-2 i(+p0:< 0
* @version 1.0 y L~W.H
*/ d8x;~RA
public class MergeSort implements SortUtil.Sort{ ?@
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e64 ^ChCoV
/* (non-Javadoc) Lq!>kT<]!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vgN&K@hJ
*/ 0'o:#-
public void sort(int[] data) { @!d{bQd,
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); efE.&]
} $]2vvr
:S(ZzY
Q
private void mergeSort(int[] data,int[] temp,int l,int r){ n@[O|?S
int mid=(l+r)/2; %GIr&V4|
if(l==r) return ; `x%>8/
mergeSort(data,temp,l,mid); "Os_vlapHo
mergeSort(data,temp,mid+1,r); ps DetP
for(int i=l;i<=r;i++){ u,Kly<0j
temp=data; S?BG_J6A7
} 26x[X.C:
int i1=l; 1 I",L&S1
int i2=mid+1; Ef13Q]9|
for(int cur=l;cur<=r;cur++){ 0Z]!/AsC
if(i1==mid+1) Yk Qd
data[cur]=temp[i2++]; 1]/.` ]1
else if(i2>r) (0kK_k'T
data[cur]=temp[i1++]; @2v_pJy^
else if(temp[i1] data[cur]=temp[i1++]; =rX>1
else 2SR: FUV/
data[cur]=temp[i2++]; d4z/5Oa
} Hl
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} 3%=~)7cF
G'aDb/
} tcog'nAz
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改进后的归并排序: Z>#i**
2Q:+_v
package org.rut.util.algorithm.support; ^&Y#)II
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import org.rut.util.algorithm.SortUtil; ^@NU}S):yN
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/** ,UdVNA
* @author treeroot 4x[S\,20
* @since 2006-2-2 07=mj%yV
* @version 1.0 t}/( b/VD
*/ 2P{Gxz<#
public class ImprovedMergeSort implements SortUtil.Sort { [Cv/{f3]u{
,L'zRyP
private static final int THRESHOLD = 10; YQA,f#
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/* l_%6
* (non-Javadoc) fw{gx
* Q6I:"2u1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :tv,]05t
*/ C'}KTXiRW
public void sort(int[] data) { W#3Q ^Z?
int[] temp=new int[data.length]; HT1!5
mergeSort(data,temp,0,data.length-1); A1zjPG&]
} x{WD;$J
]~hk6kS8Q
private void mergeSort(int[] data, int[] temp, int l, int r) { !0mI;~q| F
int i, j, k; U}j0D2
int mid = (l + r) / 2; -_eLf#3
if (l == r) $5Ff1{
return; ))'<_nD
if ((mid - l) >= THRESHOLD) ~zNAbaC+>t
mergeSort(data, temp, l, mid); _b;{_g
else y7Df_|Z
insertSort(data, l, mid - l + 1); N_[*H
if ((r - mid) > THRESHOLD) xe&i^+i
mergeSort(data, temp, mid + 1, r); m$T-s|SY
else tT?cBg{
insertSort(data, mid + 1, r - mid); Bh]P{H%
fMyti$1~
for (i = l; i <= mid; i++) { _/5H l`
temp = data; QWHug:c
} 7g}w+p>
for (j = 1; j <= r - mid; j++) { gQ1;],_
temp[r - j + 1] = data[j + mid]; t" Z6[XG
} _MX>#!l
int a = temp[l]; .];=Pu^
int b = temp[r]; (n9gkO&8"
for (i = l, j = r, k = l; k <= r; k++) {
`~CQU
if (a < b) { HJYScwjQ;`
data[k] = temp[i++]; HBx=\%;n
a = temp; Z^MNf
} else { !^Y(^RS@
data[k] = temp[j--]; 6MdiY1Lr!K
b = temp[j]; 0T5L_%c
} UH/\
} ,f;}|d:r
} IG9VdDj
~|xA4u5LG
/**
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* @param data M%;hB*9
* @param l L.0mk_&
* @param i
3]3|
*/ v9O~@v{=
private void insertSort(int[] data, int start, int len) { Q%mB|i|
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ':m,)G5&
} ly3\e_z:G
} HcSXsF
} tr}Loq\y
} *CTlOy
(|1A?@sJ#h
堆排序: {
W{]L:
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package org.rut.util.algorithm.support; hJ~Uf5Q
7 X'u6$i
import org.rut.util.algorithm.SortUtil; k%QpegN
l u%}h7ng
/** 9kS^Abtk
* @author treeroot h/hmlnOQl
* @since 2006-2-2 [>5-$Y OT
* @version 1.0 d;9FB[MmOJ
*/ ls:w8&`*
public class HeapSort implements SortUtil.Sort{ ~d*(=G
p/@smke
/* (non-Javadoc) 74k dsgQf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p\aaJ
*/ o;<Xo&
public void sort(int[] data) { mg.kr:
MaxHeap h=new MaxHeap(); 3/W'V,5G6
h.init(data); 3c6b6
for(int i=0;i h.remove(); oij}'|/Jc
System.arraycopy(h.queue,1,data,0,data.length); .qZ~_xk d
} '|p$)yx2
9b"=9y,
private static class MaxHeap{ 9=h'9Wo
^)*-Bo)I
void init(int[] data){
^J)mH[
this.queue=new int[data.length+1]; !"/n/jz
for(int i=0;i queue[++size]=data; @wo(tf=@P
fixUp(size); 8jo p_PG'
} 90*5
5\>{
} YU5(g^<
J!pygn O
private int size=0; rb+j*5Es
)@Yf]qx+Y<
private int[] queue; mtmjZP(w
Y^}Z>
public int get() { 3L}!RB
return queue[1]; p &"`RS#Z
} W~9tKT4
qjdMqoOCjl
public void remove() { v~V!ayn)wQ
SortUtil.swap(queue,1,size--); [)zP6\I
fixDown(1); ah0`KxO]
} #
,_u_'C*!
file://fixdown ,-d0b0
private void fixDown(int k) { /-+xQn]
int j; MUREiL9L|
while ((j = k << 1) <= size) { _zn.K&I-*k
if (j < size %26amp;%26amp; queue[j] j++; 6vNrBB
if (queue[k]>queue[j]) file://不用交换 J1sv[$9
break; ,J^b0@S
SortUtil.swap(queue,j,k); "h a L
k = j; ^!ZC?h!rG
} YS@ypzc/
} J1I ;Jgql(
private void fixUp(int k) { ERE)A-8
while (k > 1) { ^N;.cY
int j = k >> 1; dP<=BcH>f
if (queue[j]>queue[k]) s ;oQS5Y
break; 1o;J,dYu
SortUtil.swap(queue,j,k); xLWwYK
k = j; !1DKLQ
} =JbRu|/
} dq&yf7
s!c`=
} 9c#+qH
pU%n]]qF
} p~^D\jR.
'H&2HXw&2
SortUtil: XJ` ]ga
Z/0fXn})
package org.rut.util.algorithm; %gyLCTw
{/(D$"j(S
import org.rut.util.algorithm.support.BubbleSort; 7-
]
as$
import org.rut.util.algorithm.support.HeapSort; bg&zo;Ck8T
import org.rut.util.algorithm.support.ImprovedMergeSort; w2Jf^pR
import org.rut.util.algorithm.support.ImprovedQuickSort; sRx63{
import org.rut.util.algorithm.support.InsertSort; y7
3VFb
import org.rut.util.algorithm.support.MergeSort; %]DP#~7[|
import org.rut.util.algorithm.support.QuickSort; ")dH,:#S
import org.rut.util.algorithm.support.SelectionSort; Ax?y
import org.rut.util.algorithm.support.ShellSort; O%(fx!c`
_w/EP
/** D!NQ~'.a=2
* @author treeroot mdmvT~`
* @since 2006-2-2 I^UC&5dC
* @version 1.0 ^~@U]
*/ l(u.I2^o
public class SortUtil { *`\Pr
public final static int INSERT = 1; XY)&}u.
public final static int BUBBLE = 2; Vq5k+3W+
public final static int SELECTION = 3; s(%oTKjt
public final static int SHELL = 4; t.&Od;\[/
public final static int QUICK = 5; !QHFg-=7
public final static int IMPROVED_QUICK = 6; q<[_T
public final static int MERGE = 7; FsV'Cu@!U
public final static int IMPROVED_MERGE = 8; WD2]&g
public final static int HEAP = 9; pP?MWe
Eg
cc&axc7I
public static void sort(int[] data) { Xg
SxN!I
sort(data, IMPROVED_QUICK); v'qG26
} Co9QW/'i
private static String[] name={ hMUs"
<.
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" GCX G/k?w:
}; E4W -hq~
8a="/J
private static Sort[] impl=new Sort[]{ XKttZOiGT
new InsertSort(), i;jw\ed
new BubbleSort(), u7[ykyV
new SelectionSort(), 9:,\gw>F
new ShellSort(), %Nhx;{
new QuickSort(), ,TPISs
new ImprovedQuickSort(), g[Ib,la_a
new MergeSort(),
L %K\C
new ImprovedMergeSort(), c^u"I'#Q
new HeapSort() /X(t1 +
}; 8X`tU<Ab
{u\Mj
public static String toString(int algorithm){ e7(ucE
return name[algorithm-1]; TUDr\' @/f
} ? glSC$b
IOoz^/'
public static void sort(int[] data, int algorithm) { \"^w'ng
impl[algorithm-1].sort(data); =fve/_Q~
} sqJSSNt
\ 3?LqJ
public static interface Sort { U,gti,IX^
public void sort(int[] data); ]dk8lZ;bo
} YZ7|K<
8`
@G; o
public static void swap(int[] data, int i, int j) { W4e5Rb4~f"
int temp = data; ryCI>vJz
data = data[j]; AvSM^
data[j] = temp; .J.-Mm`.
} I1\a[Xe8E
} T ;vF(