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。 vO%n~l=
插入排序: 5 1@V""m
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package org.rut.util.algorithm.support; K\nN2y
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import org.rut.util.algorithm.SortUtil; J i :2P*
/** "'4R_R
* @author treeroot tjBs>w
* @since 2006-2-2 Z2(z,pK
* @version 1.0 KIC5U50J
*/ Y]P';C_eP
public class InsertSort implements SortUtil.Sort{ VljAAt
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/* (non-Javadoc) %UI.E=`n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YxlV2hcX;
*/ P\tP0+at
public void sort(int[] data) { A)kx,,[
int temp; II3)Cz}xRG
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Sf
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} z~L''X7g
} =\B{)z7@6D
} A`TVV
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} "yCCei,hA?
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冒泡排序: h8Q+fHDYv
V8ZE(0&II}
package org.rut.util.algorithm.support; (8TB*BhQ_
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import org.rut.util.algorithm.SortUtil; Yc3\NqQM
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/** }=z_3JfO
* @author treeroot U s86.@|
* @since 2006-2-2 n .ZLR=P4
* @version 1.0 ]|it&4l
*/ rmu5K$pl
public class BubbleSort implements SortUtil.Sort{ VLC<ju!
<k<K"{
/* (non-Javadoc) 15+>W4v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'A;G[(SYy
*/ <vJPKQ`=:
public void sort(int[] data) { lqn7$
int temp; GwQW
I]
for(int i=0;i for(int j=data.length-1;j>i;j--){ f.JZ[+
if(data[j] SortUtil.swap(data,j,j-1); bXF>{%(}E
} +~?ze,Di
} b6:A-jb*I
} V>ML-s9
} {e\Pd!D?|
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} p4Cw#)BaS
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选择排序: 0{^vqh.La
g@wF2=
package org.rut.util.algorithm.support; <f.* =/]W2
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import org.rut.util.algorithm.SortUtil; 3:@2gp!tq
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/** +KgoL a
* @author treeroot Gdmh#pv
* @since 2006-2-2 &[:MTK?x!
* @version 1.0 W2/FGJD
*/ d0Xb?-
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public class SelectionSort implements SortUtil.Sort { vQ/}E@?u
Ec
IgX_\
/* 3[I; 3=O
* (non-Javadoc) E9z^# @s
* kP~'C'5Ys
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~,+n_KST;
*/ s3qWTdM
public void sort(int[] data) { 1c_gh12
int temp; OzY55
for (int i = 0; i < data.length; i++) { J@D5C4>i
int lowIndex = i; 1{+x >Pv:
for (int j = data.length - 1; j > i; j--) { Go~bQ2*'(/
if (data[j] < data[lowIndex]) { $*
1?"$LN
lowIndex = j; qcMVY\gi
} ^,u0kMG5l
} n@n608
SortUtil.swap(data,i,lowIndex); d]1%/$v^
} F x,08
} io:g]g
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} +v4P9V|s
b ~DtaGh
Shell排序: 7pMl:\
vzV,}
S*c
package org.rut.util.algorithm.support; {Hncm
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import org.rut.util.algorithm.SortUtil; A{\#.nC/z
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/** #vrxhMo
* @author treeroot jv$Y]nf
* @since 2006-2-2 Q#C;4)e
* @version 1.0 &:}e`u@5|
*/ m|q?gX9R
public class ShellSort implements SortUtil.Sort{ $YZsaw
@X`~r8&
/* (non-Javadoc) i`[5%6\"&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .5Y%I;~v
*/ 7sP;+G
public void sort(int[] data) { tP; &$y.8
for(int i=data.length/2;i>2;i/=2){ RmS|X"zc
for(int j=0;j insertSort(data,j,i); s_]p6M
} W: Rs 0O
} 5.gM]si
insertSort(data,0,1); { 3``T o$
} aE}1~`
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/** m"Y;GzqQl
* @param data blxAy
* @param j #Mo`l/Cwp
* @param i #_yQv? J
*/ .qVz rS
private void insertSort(int[] data, int start, int inc) { @$FE}j_
int temp; 9hAS#|vK
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >Gbj1>C}
} Enee\!@v
} :xw2\:5~0
} 1);$#Dlt
k
}.Eq_wP<
} *S_e:^
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快速排序: R'a%_sACj>
u2HkAPhD
package org.rut.util.algorithm.support; %bf+Y7m
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import org.rut.util.algorithm.SortUtil; Ke-Q>sm2Q
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/** 8f>=.O*)
* @author treeroot }*Qd]\fy
* @since 2006-2-2 y e!Bfz>
* @version 1.0 g-'y_'%0G
*/ :0o
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public class QuickSort implements SortUtil.Sort{ 7t-j2 n`<
0z?b5D;
/* (non-Javadoc) d7N;Fa3yL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A(duUl~
*/ 70_T;K6
public void sort(int[] data) { Cpaeo0Oq
quickSort(data,0,data.length-1); Wd4fIegk
} 8xhXS1
private void quickSort(int[] data,int i,int j){ 3WyK!@{
int pivotIndex=(i+j)/2; m1_?xU
file://swap g!n1]- 1
SortUtil.swap(data,pivotIndex,j); /2^cty.BXw
||
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int k=partition(data,i-1,j,data[j]); xVoWGz7
SortUtil.swap(data,k,j); EQPZV
K/
if((k-i)>1) quickSort(data,i,k-1); m^zx&
if((j-k)>1) quickSort(data,k+1,j); #oMbE<//"
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} ^&<~6y}U^
/** P
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* @param data mOwgk7s[J
* @param i mFayU w
* @param j Bp\io$(%
* @return FW7+!A&F
*/ .Pq8C
private int partition(int[] data, int l, int r,int pivot) { O%9Cq}*
do{ BEvSX|M>x
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tYIHsm\b
SortUtil.swap(data,l,r); ~C5iyXR
} W9 y8dw.
while(l SortUtil.swap(data,l,r); DHpU?;|3
return l; e<5+&Cj
} (Wr;:3i
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} Z{#^lhHx
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改进后的快速排序: 2a.NWJS
el!Bi>b9c!
package org.rut.util.algorithm.support; 1hZM))
~m!>e])P?X
import org.rut.util.algorithm.SortUtil; /iif@5lw{
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/** \$;\,p p
* @author treeroot }SitT\%
* @since 2006-2-2 Z.6`O1OY}?
* @version 1.0 QXJD'c
*/ +azPpGZ=
public class ImprovedQuickSort implements SortUtil.Sort { :EgdV
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private static int MAX_STACK_SIZE=4096; QZ{&7mc>
private static int THRESHOLD=10; yE9JMi0
/* (non-Javadoc) H[@}ri<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]p'Qk
*/ 8e\a_R*(|
public void sort(int[] data) { } Q1$v~
int[] stack=new int[MAX_STACK_SIZE]; v{
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int top=-1; @mP@~
int pivot; >[|:cz
int pivotIndex,l,r; 'IfM~9'D
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stack[++top]=0; 4L!{U@'
stack[++top]=data.length-1; Xz]}cRQ[
/bCrpcH
while(top>0){ ([f6\Pw\ <
int j=stack[top--]; R2]?9\II
int i=stack[top--]; nr&G4t+%Hv
Rp`}"x9
pivotIndex=(i+j)/2; @Jvw"=
pivot=data[pivotIndex]; ](MXP,R
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SortUtil.swap(data,pivotIndex,j); yE"hgdL
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file://partition #S<>+,Lk
l=i-1; GQF7]j/
r=j; K:'pK1zy
do{ Q]6nW[@j'
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); D%^EG8i n.
SortUtil.swap(data,l,r); 44%::Oh
} fiw~"2U
while(l SortUtil.swap(data,l,r); ][G<CO`k
SortUtil.swap(data,l,j); I">z#@CT
0w+hf3K+:
if((l-i)>THRESHOLD){ gEi"m5po
stack[++top]=i; vpXS!o>/Sn
stack[++top]=l-1; U +mx@C_
} *EV] 8
if((j-l)>THRESHOLD){ k(^zhET
stack[++top]=l+1; mnil1*-c0
stack[++top]=j; 8l='H l
} #G*z{BRQ
"sg$[)I3n
} ^kt"n(P5
file://new InsertSort().sort(data); 1Eg}qU,:
insertSort(data); }1_gemlf
} i6X/`XW'
/** kN}.[enI~
* @param data E0)v;yRcw
*/ /@wm?ft6Gk
private void insertSort(int[] data) { qbP[ 9
int temp; ~(%G;fZ?x
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); mDM]RAub)
} CS"p[-0
} 8tdUnh%/
} %<
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} }(hE{((o
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归并排序: ,#c-"xY
XD|&{/O
package org.rut.util.algorithm.support; x65e,'
gH_r'j
import org.rut.util.algorithm.SortUtil; Aga7X@fV(
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/** mR0@R;,p
* @author treeroot lZ.,"F@
* @since 2006-2-2 @ym7hk.
* @version 1.0 |/<iydP
*/ \\/X+4|o'
public class MergeSort implements SortUtil.Sort{ *=sU+x&X
]7VK&YfN
/* (non-Javadoc) #Kh`ATme
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~(&xBtg:}
*/ zc2,Mn2
public void sort(int[] data) { &c\8`# 6
int[] temp=new int[data.length]; C u?$!|V
mergeSort(data,temp,0,data.length-1); QWxQD'L'
} 5S7Z]DXiT8
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private void mergeSort(int[] data,int[] temp,int l,int r){ }BfwMq4E)n
int mid=(l+r)/2; :qT>m
if(l==r) return ; Qy$QOtrv
mergeSort(data,temp,l,mid); @eMyq1ZU
mergeSort(data,temp,mid+1,r); ILVbbC`D
for(int i=l;i<=r;i++){ %idnm
temp=data; un/eS-IIh
} ;{ezK8FJ}@
int i1=l; ' 5Ieqpm9
int i2=mid+1; WkO .
for(int cur=l;cur<=r;cur++){ u(o @_6
if(i1==mid+1) DBv5Og
data[cur]=temp[i2++]; j=gbUXv/
else if(i2>r) `C()H@;
data[cur]=temp[i1++]; y>#j4%D~4
else if(temp[i1] data[cur]=temp[i1++]; *PI3L/*
else dKMuo'H'%
data[cur]=temp[i2++];
Kr#=u~~M
} TcIUo!:z
} ydFY<Mb(o
4-"wFp
} ]6aM %r=c
kQb0pfYs
改进后的归并排序: Oh^X^*I$@
%z2nas$$g
package org.rut.util.algorithm.support; zZRqb/20
6RF01z|~_
import org.rut.util.algorithm.SortUtil; Z5U~g?
q+DH2&E'
/** 'l}3Iua6qk
* @author treeroot FFkG,XH
* @since 2006-2-2 >}I}9y+
* @version 1.0 ;e{2?}#8&
*/ U!'lc}5
public class ImprovedMergeSort implements SortUtil.Sort { >hhd9
<V,?!}V
private static final int THRESHOLD = 10; \xdt|:8
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/* :@/fy}!
* (non-Javadoc) V.4j?\#%
* XX F9oy8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pta%%8":
*/ ]`NbNr]K
public void sort(int[] data) { 06`__$@h
int[] temp=new int[data.length]; 5A)w.i&V
mergeSort(data,temp,0,data.length-1);
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} i`Yf|^;@2>
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private void mergeSort(int[] data, int[] temp, int l, int r) { e%P;Jj476
int i, j, k; 7^; OjO@8
int mid = (l + r) / 2; WNx^Rg"
>'
if (l == r) UVLcR
return; R*y[/Aw
if ((mid - l) >= THRESHOLD) R',w~1RV'
mergeSort(data, temp, l, mid); epL[PL}
else 98]t"ny [
insertSort(data, l, mid - l + 1); C0W~Tk\C2
if ((r - mid) > THRESHOLD) W
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mergeSort(data, temp, mid + 1, r); 9JtvHUkO
else Q. XsY.{
insertSort(data, mid + 1, r - mid); VB#31T#q?
<It7s1O
for (i = l; i <= mid; i++) { IX(yajc[~M
temp = data; Rf^cw}jU
} b>z.d-
for (j = 1; j <= r - mid; j++) { z]YhQIU4n8
temp[r - j + 1] = data[j + mid]; C{Ug ?hVP
} L1xD$wl
int a = temp[l]; c 2@@Rd~M
int b = temp[r]; qWpC e*C
for (i = l, j = r, k = l; k <= r; k++) { ]*@$%iCPE
if (a < b) { Ak1)
data[k] = temp[i++]; PPPwDsJ
a = temp; aX%Zuyny
} else { {t:ND
data[k] = temp[j--]; %MJ7u}
b = temp[j]; E,fp=.
} (3h*sd5ly
} DxgT]F%
} 5Nb_K`Vp*
N]}+F w\5
/** cv4M[]U~
* @param data c.Y8CD.tqL
* @param l ws?s
* @param i ;QQ7vo
*/ .^S78hr]n
private void insertSort(int[] data, int start, int len) { -C}59G8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _0["J:s9
} $tHwJ!<$&
} J_|}Xd)~t6
} dO;vcgvb
} {l&2Kd*
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堆排序: ]~Vu-@
/}
KdJx#Lc
package org.rut.util.algorithm.support; TQd FC\@f"
u2BW]T]
import org.rut.util.algorithm.SortUtil; nj0AO0
zZc@;S#
/** 9*+0j2uhQ
* @author treeroot YIQ]]q8R!L
* @since 2006-2-2 B;]5,`#!
* @version 1.0 ]MLLr'6?
*/ d"6]?
public class HeapSort implements SortUtil.Sort{ {kl{mJ*
nYy}''l<
/* (non-Javadoc) ;3}EBcw)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u?3NBc$~A
*/ 62l0
Z-
public void sort(int[] data) { kqvJ&7
MaxHeap h=new MaxHeap(); lhA
s!\F
h.init(data); B H0#Q5
for(int i=0;i h.remove(); B/D\gjb
System.arraycopy(h.queue,1,data,0,data.length); Qy^z *s
} Y-3[KH D
sp
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private static class MaxHeap{ :n4:@L<%H
+#uNQ`1v
void init(int[] data){ )=E~CpKV
this.queue=new int[data.length+1]; Dyk[ug5
for(int i=0;i queue[++size]=data; q$?7
~*M;x
fixUp(size); y{`(|,[
} RQpIBsj
} TG63
Q_kT}6#(J=
private int size=0; %- ZR~*
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private int[] queue; %g0z)J
qHR^0&
public int get() { du'}+rC
return queue[1]; % O&m#)|
} C^,4`OI
xQ#Akd=
public void remove() { P~\a)Szy
SortUtil.swap(queue,1,size--); +%
XhQ
fixDown(1); /NW>;J}C
} -eR!qy:.]5
file://fixdown Gf
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private void fixDown(int k) { rwL=R,
int j; 5%QC
][,
while ((j = k << 1) <= size) { 8|5Gv
if (j < size %26amp;%26amp; queue[j] j++; m@G<ZCMZ
if (queue[k]>queue[j]) file://不用交换 ']ITuP8
break; P /c
Q1
SortUtil.swap(queue,j,k); `J>E9p<
k = j; N)y^</Ya
} rL%]S&M9
} DJViy
private void fixUp(int k) { qe5tcv}u
while (k > 1) { $u; >hk
int j = k >> 1; K0O-WJ
if (queue[j]>queue[k]) ;wJ7oj<
break; 5\akI\
SortUtil.swap(queue,j,k); {PODisl>\D
k = j; 1V|< A
} q+A<g(Xu
} L_THU4^j
aF&r/j+}o
} :DtZ8$I`]C
^&+zA,aL,A
} cWN d<=Jp
eJU;*] xfH
SortUtil: ;cv.f>Cm
'1W!xQ}E
package org.rut.util.algorithm; @-'/__cgt
1MbY7!?PG
import org.rut.util.algorithm.support.BubbleSort; k{gl^
import org.rut.util.algorithm.support.HeapSort; 1YOg1 n+k
import org.rut.util.algorithm.support.ImprovedMergeSort; CfPXn0I
import org.rut.util.algorithm.support.ImprovedQuickSort; w^06z,
import org.rut.util.algorithm.support.InsertSort; .S~@BI(|<
import org.rut.util.algorithm.support.MergeSort; A",eS6
import org.rut.util.algorithm.support.QuickSort; PD6MyW05%9
import org.rut.util.algorithm.support.SelectionSort; O&`U5w
import org.rut.util.algorithm.support.ShellSort; R%>jJ[4\[
9#v-2QY
/** .)LZ`Ge3F
* @author treeroot 9@:BK;Fi
* @since 2006-2-2 8)L'rW{q#
* @version 1.0 @SU8 \:(U
*/ F(#ha J$>
public class SortUtil { M{C6rm|
public final static int INSERT = 1; fuq(
2&^
public final static int BUBBLE = 2; R<"2%oY
public final static int SELECTION = 3; :]vA2
public final static int SHELL = 4; /_]ltX D
public final static int QUICK = 5; 3(1]FKZtt
public final static int IMPROVED_QUICK = 6; {DU"]c/S
public final static int MERGE = 7; d; 9*l!CF
public final static int IMPROVED_MERGE = 8; _b>F#nD,'%
public final static int HEAP = 9; lc]V\'e
2zz,(RA
public static void sort(int[] data) { k/% #>
sort(data, IMPROVED_QUICK); kW#S]fsfU
} r]v&t
private static String[] name={ ?N:B
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" G 0hYFc u
}; b3}Q#Y\G
|~z3U>
private static Sort[] impl=new Sort[]{ BWWq4mdb{
new InsertSort(), ]fj- `==
new BubbleSort(), f0vJm
new SelectionSort(), aYqm0HCT
new ShellSort(), AIb>pL{
new QuickSort(), uS~#4;R
new ImprovedQuickSort(), |pJC:woq
new MergeSort(), ?]^zD k@~
new ImprovedMergeSort(), :Zza)>l
new HeapSort() u#1%P5r&X
}; W;4Lkk$
;+sl7qlA4
public static String toString(int algorithm){ /#f^n]v
return name[algorithm-1]; w!\3ICB
} {(4# )K2g%
yMb|I~k
public static void sort(int[] data, int algorithm) { %<ic%gt`#
impl[algorithm-1].sort(data); joqWh!kv7U
} /be=u@KV
^-hEr sK
public static interface Sort { Y&K <{\vE
public void sort(int[] data); +c--&tBo
} Pe}PH
I
~O{W;Cyh
public static void swap(int[] data, int i, int j) { e # 5BPI
int temp = data; GX
}q9
data = data[j]; `N}d}O8
data[j] = temp; y%S})9
} [[WF0q
} Zsj`F9*e