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。 <lj;}@qQ<
插入排序: [4u.*oL&
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package org.rut.util.algorithm.support; Hvto]~=GQ
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import org.rut.util.algorithm.SortUtil; QN!$4 1A?{
/** 9 -\.|5;:
* @author treeroot [f9U9.fR
* @since 2006-2-2 #@QZ
* @version 1.0 zoUM<6q
*/ )zzK\I6/EQ
public class InsertSort implements SortUtil.Sort{ hP1H/=~
pDlU*&
/* (non-Javadoc) Ka|WT|1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lb2bzZbhx
*/ p<w2e
public void sort(int[] data) { Q{ibH=^
int temp; o/grM+_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DM3W99PWA
} <g SZt\
} 6PF7Wl7.
} 'gDhi!h%
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} +=v6*%y"V
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冒泡排序: .</`#
w%(Ats
package org.rut.util.algorithm.support; 0=3Av8
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import org.rut.util.algorithm.SortUtil; 2UPqn#.3
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/** \G+ hi9T(
* @author treeroot T2Q`Ax7
* @since 2006-2-2
}pOem}
* @version 1.0 !Nu ~4
*/ Z%]s+V)st
public class BubbleSort implements SortUtil.Sort{ \OV><|Lkh
yHY \4OHS
/* (non-Javadoc) .DzFtc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gVM&wo |
*/ t u)kWDk
public void sort(int[] data) { K\w:'%>-
int temp; 8reis1]2S
for(int i=0;i for(int j=data.length-1;j>i;j--){ V&i/3g
if(data[j] SortUtil.swap(data,j,j-1); q97Z .o
} llbf(!
} ?Vy%<f$
} N,Fmu
} Z2HH&3HA
hRU.^Fn#%
} &LRO^[d
lr>P/W\
选择排序: `1AVw]k
oa4{s&db-
package org.rut.util.algorithm.support; PBXRey7>D
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import org.rut.util.algorithm.SortUtil; CK<Wba
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/** Y[=X b
* @author treeroot `QpkD8
* @since 2006-2-2 381a(F[$e
* @version 1.0 Ev
adY
*/ P;.j5P^j`
public class SelectionSort implements SortUtil.Sort { qD@]FEw!O
;'E1yzX^
/* I
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* (non-Javadoc) _Hhf.DmUAH
* sqtMhUQ?>w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q%g!TFMg
*/ v}vwk8
public void sort(int[] data) { n};:*N!
v
int temp; 7Nu.2q E
for (int i = 0; i < data.length; i++) { /$w,8pV=
int lowIndex = i; ,".1![b
for (int j = data.length - 1; j > i; j--) { |ia#Elavo
if (data[j] < data[lowIndex]) { ]LcCom:]
lowIndex = j; 4=BIYC"Lu
} 3PmM+}j3
} #@rvoi
SortUtil.swap(data,i,lowIndex); S.u1[Yz^
} C;mcb$@
} Pv- i.
t)!(s,;T
} ,;&j*qFi
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Shell排序: ~AqFLv/%
<_o).hE{
package org.rut.util.algorithm.support; 0j}!4D+
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import org.rut.util.algorithm.SortUtil; e}xx4mYo
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/** 6cO36
* @author treeroot 7?U)V03
* @since 2006-2-2 pTQ70V3
* @version 1.0
O,a1?_m8
*/ -2o_ L?
public class ShellSort implements SortUtil.Sort{ 5]-q.A5m
?@*hU2MTC
/* (non-Javadoc) $(3mpQAg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tsYBZaH
*/ U*p;N,SjQ
public void sort(int[] data) { aEL^N0\d
for(int i=data.length/2;i>2;i/=2){ 8)Z)pCN
for(int j=0;j insertSort(data,j,i); -~Ll;}nZC
} ,/oqLI\
} `RF0%Vm~t
insertSort(data,0,1); JX.3b_O
} 8^ujA
jDWmI%Y.
/** {IB}g:
* @param data zs=[C+Z\
* @param j AmyZ9r#{
* @param i !R`E+G@
*/ ktA5]f;
private void insertSort(int[] data, int start, int inc) { x6qQ
Y<>
int temp; Whd\Ub8(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (dH "b
*
} 8zI*<RX.Q
} H.Q648A"PF
} o_i N(K
j[ fE^&
} Q\QSnMM&]
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快速排序: ij=_h_nA
fk6`DUBV
package org.rut.util.algorithm.support; ZC99/NWN
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import org.rut.util.algorithm.SortUtil; Bu ]PNKIi
eBZ94rA]
/** s"'ns
* @author treeroot >bLhCgF:"
* @since 2006-2-2 F|wT']1Y
* @version 1.0 ;h7W(NO~z
*/ hI$IBf>
public class QuickSort implements SortUtil.Sort{ 6zZT5
Kn
)/p=ZH0[
/* (non-Javadoc) ?LwBF;Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H(QbH)S$6
*/ K Y=$RO
public void sort(int[] data) { ^b;3Jj
quickSort(data,0,data.length-1); PxvD0GTW
} >WcOY7
private void quickSort(int[] data,int i,int j){ "9^OT
int pivotIndex=(i+j)/2; X-_ $jKfM
file://swap Ue?mb$ykC.
SortUtil.swap(data,pivotIndex,j); +lhjz*0
ZL7#44
int k=partition(data,i-1,j,data[j]); !*\J4bJe
SortUtil.swap(data,k,j); "Dt:
8Nf^
if((k-i)>1) quickSort(data,i,k-1);
Q"Pl)Q\
if((j-k)>1) quickSort(data,k+1,j); x@p1(V.
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} jap5FG+2
/** KHTR oXt
* @param data Clo}kdkd_
* @param i H#+2l?D:"
* @param j EK%J%NY
* @return ~_]i'ii8
*/ r,r"?}Z
private int partition(int[] data, int l, int r,int pivot) { 0^25uAD=
do{ _kZ&t_]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G'<Ie@$6l
SortUtil.swap(data,l,r); <1pRAN0
} ~p!=w#/
while(l SortUtil.swap(data,l,r); !^x;4@Ejm
return l; P-_2IZiz
} _qf$dGqc
p[8H!=`K
} O:{N5+HVG
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改进后的快速排序: mb?r{WCi
`gSJEq
package org.rut.util.algorithm.support; 2)\gIMt%
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import org.rut.util.algorithm.SortUtil; Njmb{L]Cps
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/** 0-~F%:x
* @author treeroot uE ^uP@d
* @since 2006-2-2 "MPr'3
* @version 1.0 $lAQcG&Q
*/ :m[HUh
public class ImprovedQuickSort implements SortUtil.Sort { @#>YU
tE$oV
private static int MAX_STACK_SIZE=4096; }I"k=>Ycns
private static int THRESHOLD=10; V2B:
DIpr
/* (non-Javadoc) AT-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U:fGIEz{ZY
*/ p;<aZ&@O
public void sort(int[] data) { 9TUB3x^
int[] stack=new int[MAX_STACK_SIZE]; Ru~;awV?
'h#>@v> }
int top=-1; m4@Lml+B,
int pivot; ^fEer
int pivotIndex,l,r; h @2.D|c)g
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stack[++top]=0; QR\2%}9b
stack[++top]=data.length-1; ):st-I!o
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while(top>0){ 7Ml OBPh
int j=stack[top--]; +ZJ1> n
int i=stack[top--]; 9!,f4&G`
p1']+4r%
pivotIndex=(i+j)/2;
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pivot=data[pivotIndex]; y(yBRR
9`Y\`F#}q
SortUtil.swap(data,pivotIndex,j); rebWXz7
ZRP[N)Ld$
file://partition Y?4N%c_;
l=i-1; j-k]|0ea}
r=j; lbj_if;
do{ swfjKBfw+g
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wqF_hs(O
SortUtil.swap(data,l,r); ~0YRWM ;
} Is(ZVI
while(l SortUtil.swap(data,l,r); 'EO"0,
SortUtil.swap(data,l,j); 2&0#'Tb
R,8460e7
if((l-i)>THRESHOLD){ =kBWY9:$,
stack[++top]=i; C[[:/X(c
stack[++top]=l-1; 3a?dNwM@
} -uhg7N[3
if((j-l)>THRESHOLD){ =GL^tAUJ
stack[++top]=l+1; om1D} irKT
stack[++top]=j; 0[92&:c,
} '"9Wt@
.
+-PFISa<r
} O6b.oS'-
file://new InsertSort().sort(data); q\d/-K
insertSort(data); 9)S,c=z83
} $p\ 0/
/** }_h2:^n
* @param data "
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*/ \os"j
private void insertSort(int[] data) { **~1`_7~*
int temp; K}!YXy h
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XSktbk
} LYMb)=u]
} [W8?ww%qT
} w^)_Fk3
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PkT:5
} !4}Wp.
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归并排序: #OsUF,NU
xeKfc}:&z
package org.rut.util.algorithm.support; g)=-%n'RoE
BUU ) Sz
import org.rut.util.algorithm.SortUtil; #F:\_!2c
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/** tREC)+*\
* @author treeroot hEfFMi=a`
* @since 2006-2-2 S*(ns<L
* @version 1.0 L r9z~T:ED
*/ :pGgxO% q
public class MergeSort implements SortUtil.Sort{ ?#J;[y\^
D)J'xG_<O
/* (non-Javadoc) f=Kt[|%'e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~?:Xi_3Lo
*/ mO@Sl(9
public void sort(int[] data) { VR vX^w0
int[] temp=new int[data.length]; F=V_ACU
mergeSort(data,temp,0,data.length-1); JA
"
} l/6(V:
0r%,|FaS
private void mergeSort(int[] data,int[] temp,int l,int r){ `YK%I8
int mid=(l+r)/2; &` weW
if(l==r) return ; !345
mergeSort(data,temp,l,mid); 2VgVn,c
mergeSort(data,temp,mid+1,r); '9Xw_1B
for(int i=l;i<=r;i++){ OYY_@'D
temp=data; QUi=ZD1
} jHM}({)-
int i1=l; 1w|u
^[~u\
int i2=mid+1; z{G@t0q
for(int cur=l;cur<=r;cur++){ i&zJwUr(<
if(i1==mid+1) ufXU
data[cur]=temp[i2++]; ^Z G 3{>
else if(i2>r) (d}z>?L
data[cur]=temp[i1++]; Q) Y&h'.(
else if(temp[i1] data[cur]=temp[i1++]; <j^"=UN4#
else @EGUQ|WL^
data[cur]=temp[i2++]; LO;Z3Q>#0
} RLUH[[
} T`r\yl}
<UBB&}R0
} Q=.j>aM+_
-LMO
f[v?
改进后的归并排序:
%( o[Hsl
E@S5|CM
package org.rut.util.algorithm.support; #)28ESj
0?\d%J!"S
import org.rut.util.algorithm.SortUtil; 82~ZPZG
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/** D(^ |'1
* @author treeroot ~e R6[;
* @since 2006-2-2 `yWWX.`
* @version 1.0 ^*+-0b;[G
*/ f*GdHUZ*
public class ImprovedMergeSort implements SortUtil.Sort { S0-/9h
h&6t.2<e
private static final int THRESHOLD = 10; ${w\^6&
q)KLf\
/* jthGNVZ
* (non-Javadoc) 5ofsJ!b'
* q
NE(@at
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .5YIf~!59
*/ x2 m
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public void sort(int[] data) { '3V?M;3|K
int[] temp=new int[data.length]; bhc
.UmH
mergeSort(data,temp,0,data.length-1); ,L,?xvWG
} {;Ispx0m
h?2 :'Vu]
private void mergeSort(int[] data, int[] temp, int l, int r) { OA\
*)c+F
int i, j, k; 09C[B+>h
int mid = (l + r) / 2; 8A3!XA
if (l == r) ]Qb85;0)
return; Q]2v]PJ6"
if ((mid - l) >= THRESHOLD) _9Y7.5
mergeSort(data, temp, l, mid); B;mt11M
else @(Y+W2Iyy+
insertSort(data, l, mid - l + 1); tx01*2]pX
if ((r - mid) > THRESHOLD) RB `<Zw
mergeSort(data, temp, mid + 1, r); Y]!{
nW
else C`>|D [
insertSort(data, mid + 1, r - mid); UkV{4*E
)4/227b/(
for (i = l; i <= mid; i++) { @Zd/>'
temp = data; ZsikI@?
} iv]*HE
for (j = 1; j <= r - mid; j++) { 4Js9"<w
temp[r - j + 1] = data[j + mid]; [MVG\6Up(
} #.z`clK#
int a = temp[l]; h>[][c(b
int b = temp[r]; -jOCzp
for (i = l, j = r, k = l; k <= r; k++) { >"q~9b
A
if (a < b) { :D !}jN/)
data[k] = temp[i++]; 7L\kna<
a = temp; v3{[rK}
} else { h(VF
data[k] = temp[j--]; p 6FPdt)
b = temp[j]; K,\Bj/V(
} TWFi.w4pY
} ^@0-E@ {c
} +r
2\v
Sxw%6Va]p
/** hWqI*xSaJ
* @param data 1Ev#[FOc
* @param l t/9,JG
* @param i (`pd>
*/ -8r9DS-/W
private void insertSort(int[] data, int start, int len) { C/L+:b&x~
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]C
me)&hX
} U~e^
} !\%0O`b^4
} 8=h$6=1S
} :Sj r
0aS&!"o!
堆排序: C3
m#v[+
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package org.rut.util.algorithm.support; !@<>S>uGG
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import org.rut.util.algorithm.SortUtil; `*nK@:
eVYUJ,
/** e~,/Z\i
* @author treeroot 6s"Erq5q
* @since 2006-2-2 D9|?1+Kc
* @version 1.0 uBe1{Z
*/ xe3t_y
public class HeapSort implements SortUtil.Sort{ "T_OLegdK
"/-T{p;.
/* (non-Javadoc) TdAHw
@(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -UM5&R+o
*/ !Y3
*\
public void sort(int[] data) { K{)YnY_E;
MaxHeap h=new MaxHeap(); E"P5rT
h.init(data); xgeKz^,
for(int i=0;i h.remove(); 75pz' Cb
System.arraycopy(h.queue,1,data,0,data.length); H8}}R~ZO
} )@]Y1r4U
EFgs}BV_9
private static class MaxHeap{ ;uC +5g`
+'NiuN
void init(int[] data){ ;i2N`t2
this.queue=new int[data.length+1]; kM`!'0kt
for(int i=0;i queue[++size]=data; !y>MchNv
fixUp(size); \5wC&|WEB
} :%?\Wj5HW
} z mxrz[
!1H\*VM"
private int size=0; <A,G:&d~
: Jh
private int[] queue; W_zAAIY_Y
_/)?GXwLn
public int get() { (!nhU
return queue[1]; XVfp* `
} ?V}AwLX}
^'|\8
public void remove() { :W/,V^x}
SortUtil.swap(queue,1,size--); Wkk=x&
fixDown(1); hk O)q|1
} +C{ %pF
file://fixdown [akyCb
private void fixDown(int k) { Us]Uy|j
int j; cXO_g!&2A
while ((j = k << 1) <= size) { cN> z`xl
if (j < size %26amp;%26amp; queue[j] j++; ZZa$/q"
if (queue[k]>queue[j]) file://不用交换 z.9
#AN=&[
break; AID}NQQj_
SortUtil.swap(queue,j,k); "KY9MBzPD
k = j; ?`hk0q X3
} ~?pF'3q
} 3f{%IU(z
private void fixUp(int k) { J!QzF)$4J
while (k > 1) { 7]q$sQ
int j = k >> 1; FshQ OFW
if (queue[j]>queue[k]) z90=,wd
break; Q-[^!RAK?
SortUtil.swap(queue,j,k); ~lR"3z_Z}
k = j; VvwQz#S
} "/).:9],}
} 9^m& [Z
x0])&':!
} 8u::f`vi
MR90 }wXE
} 4=H/-v'&
[`^x;*C
SortUtil: iaR^] |7_
`j59MSuK
package org.rut.util.algorithm; =sP6
g5)f8k0+ t
import org.rut.util.algorithm.support.BubbleSort; Aa5IccR
import org.rut.util.algorithm.support.HeapSort; Kt%`]Wp
import org.rut.util.algorithm.support.ImprovedMergeSort; 2'"$Y'
import org.rut.util.algorithm.support.ImprovedQuickSort; 4"e7 43(
import org.rut.util.algorithm.support.InsertSort; lA39$oJ
import org.rut.util.algorithm.support.MergeSort; 3ySP*J5
import org.rut.util.algorithm.support.QuickSort; ;6o p|
import org.rut.util.algorithm.support.SelectionSort; 877>=Tp|
import org.rut.util.algorithm.support.ShellSort; <R:KR(bT
T8.@}a
/** Ms*;?qtrR
* @author treeroot 46'EZ@#s
* @since 2006-2-2 7
:s6W%W1*
* @version 1.0 DTdL|x.{
*/ _Y*:
l7
public class SortUtil { V%pdXM5
public final static int INSERT = 1; )gNHD?4x
public final static int BUBBLE = 2; V#W(c_g
public final static int SELECTION = 3; TA=Ij,z~
public final static int SHELL = 4; S:] w@$
public final static int QUICK = 5; nMcd(&`N
public final static int IMPROVED_QUICK = 6; bw{%X
public final static int MERGE = 7; >RxZ-.,a
public final static int IMPROVED_MERGE = 8; T7YzO,b/
public final static int HEAP = 9; VGBL<X
SZ-% 0z
public static void sort(int[] data) { 6^zuRY;
sort(data, IMPROVED_QUICK); R|{6JsjG10
} ]"^GRFK5
private static String[] name={ (jCE&'?}
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" YTq>K/
}; uH]n/Kv1,
o([+Pp
private static Sort[] impl=new Sort[]{ s&vOwPmV
new InsertSort(), hHoc7
new BubbleSort(), #]I:}Q51
new SelectionSort(), B$Jn|J"/6
new ShellSort(), 9VIsLk54^
new QuickSort(), ;W#G<M&n'
new ImprovedQuickSort(), x>5#@SX
J
new MergeSort(), Hux#v>e
new ImprovedMergeSort(), 8T
6jM+ h
new HeapSort() bt#=p7W
}; &%J{C3Q9
|mrAvm}
public static String toString(int algorithm){ lp?geav
return name[algorithm-1]; 8(%iYs$
} W"|89\p}
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public static void sort(int[] data, int algorithm) { G:'-|h
impl[algorithm-1].sort(data); THK)G2
=
} G
<m{ o
+98~OInySZ
public static interface Sort { [kz<2P
public void sort(int[] data); e)\s0#
}
~J"*ahl
GVY_u@6
public static void swap(int[] data, int i, int j) { ~9]tt\jN*Y
int temp = data; eUqsvF}l!
data = data[j]; &cDnZ3Q;
data[j] = temp; pz?.(AmU\
} sJ?Fque
} 9ZG.%+l