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。 n`gW&5,,z
插入排序: @ px2/x
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package org.rut.util.algorithm.support; q;a"M7
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import org.rut.util.algorithm.SortUtil; Ox9WH4E
/**
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* @author treeroot +LFh}-X{_
* @since 2006-2-2 NrA?^F
* @version 1.0 zV {_dO
*/ 'qel3Fs"
public class InsertSort implements SortUtil.Sort{ t M?3oO
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/* (non-Javadoc) _]zm02|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z0|%h?N
*/ 'b(V8x
public void sort(int[] data) { KYBoGCS >
int temp; FbO\ #p s
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h[HFZv~{
} ?=$=c8xw
} (jhDO7
} j0P+< @y
x[L/d"Wf
} >F7v'-*{
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冒泡排序: |hGi8
kD1[6cJ!=.
package org.rut.util.algorithm.support; +9Vp<(
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import org.rut.util.algorithm.SortUtil; LWwWxerZ
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/** {Aq2}sRl{
* @author treeroot l@C39VP
* @since 2006-2-2 cl3@+v1
* @version 1.0 $7\Al$W\
*/ &IYSoA"Nz
public class BubbleSort implements SortUtil.Sort{ cvSr><(
O$SQzLZx&
/* (non-Javadoc) CjeAO 2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oMdqg4HUF
*/ 2x3%*r$
public void sort(int[] data) { '1rHvz`B/"
int temp; 1:{BC2P
for(int i=0;i for(int j=data.length-1;j>i;j--){ =6Z$nc
R
if(data[j] SortUtil.swap(data,j,j-1); #>)OLKP
} ?mM6[\DFoT
} lHl1Ny\?
} J+IkTqw
} @o otKY`
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} \M(#FS
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选择排序: F,F1Axf
U`*L` PM
package org.rut.util.algorithm.support; vfnVN@ 5
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import org.rut.util.algorithm.SortUtil; slPLc
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/** ZV,1IaO
* @author treeroot tZ4Zj`x|^
* @since 2006-2-2 Wbra*LNU
* @version 1.0 bIs@CDB
*/ y*6-?@
public class SelectionSort implements SortUtil.Sort { *.g@6IkAQ
%p wpRD@
/* QVEGd"WvvO
* (non-Javadoc) (}^Qo^Vr
* @-d0~.S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xNLvK:@0p
*/ IgxZ_2hO
public void sort(int[] data) { (A<'{J#5,
int temp; (bT3
r_
for (int i = 0; i < data.length; i++) { iRwlK5(&
int lowIndex = i; F@C^nX9
for (int j = data.length - 1; j > i; j--) { A]x'!qa@=
if (data[j] < data[lowIndex]) {
4|yZA*Q^
lowIndex = j; \7l%@
} &uX|Ksq
} cwK+{*ZH/
SortUtil.swap(data,i,lowIndex); ;`p!/9il
} %+Az
X
} %BV2 q
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} :f9O3QA
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Shell排序: '5:P,1tWU
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package org.rut.util.algorithm.support; ]E8S`[Vn
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import org.rut.util.algorithm.SortUtil; DnY7$']"|
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/** 4R8W ot
* @author treeroot B^{87YR
* @since 2006-2-2 +0)zB;~7
* @version 1.0 F~qiNV
*/ (";{@a %
public class ShellSort implements SortUtil.Sort{ d7O\p(M1
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/* (non-Javadoc) <kY||
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]t'bd<O
*/ Y$L>tFA
public void sort(int[] data) { @1p,
for(int i=data.length/2;i>2;i/=2){ ,vN0Jpf}\8
for(int j=0;j insertSort(data,j,i); i*q!|^M
} c2$&pZ
M
} A&dNCB
insertSort(data,0,1); {1jywb
}
} #c2InwZV
s3.,
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/** L.]mC !
* @param data 9F*],#ng
* @param j |ULwUi-r
* @param i HDTdOG)
*/ 4h[S`;D0Vf
private void insertSort(int[] data, int start, int inc) { RR8Z 9D;
int temp; Nvef+L,v
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4_A9o9&_Rh
} `6t3D&.u0
} 1|PmZPKq9n
} #h#Bcv0 Z
+.p$Yi`
} 6BPZ2EQ
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快速排序: e>oE{_e
fK$N|r
package org.rut.util.algorithm.support; _:tclBc8R
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import org.rut.util.algorithm.SortUtil; q|8p4X}/]
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/** c/c%-=
* @author treeroot te+5@k#t
* @since 2006-2-2 gUrb\X
* @version 1.0 TF@HwF"#
*/ wq( m%F
public class QuickSort implements SortUtil.Sort{ R+s_uwS
JKFV7{%Gl
/* (non-Javadoc) rCmxv7"
a}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8J-;/
*/ !Qg%d&q.Sx
public void sort(int[] data) { ;[_w&"[6a
quickSort(data,0,data.length-1); )~](qLSl
} ^1%gQ@P
private void quickSort(int[] data,int i,int j){ M?UlC
int pivotIndex=(i+j)/2; OoFQ@zE7%
file://swap c0 H8FF3
SortUtil.swap(data,pivotIndex,j); ~'4:{xH
>:ZlYZ6sI
int k=partition(data,i-1,j,data[j]); GC3:ZpV`
SortUtil.swap(data,k,j); kt";Jx
if((k-i)>1) quickSort(data,i,k-1); 10/N-=NG18
if((j-k)>1) quickSort(data,k+1,j); FC= %_y
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} }/Wd9x
/** g>[|/ z P
* @param data +njE
* @param i oadlyqlw#
* @param j =](c7HEQf
* @return kUJ\AK
*/ GQ-owH]
private int partition(int[] data, int l, int r,int pivot) { #0-!P+c[
do{ JuGQS24
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *5i~N}
SortUtil.swap(data,l,r); $E^#DjhRQ3
} 4LU'E%vlC
while(l SortUtil.swap(data,l,r); ZOFBT(oV
return l; Lp \%-s#5s
} k?.HW?=zy
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} T#lySev
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改进后的快速排序: u1 uu_*
Bx&.Tj
package org.rut.util.algorithm.support; J3sO%4sYR
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import org.rut.util.algorithm.SortUtil; p6V`b'*>
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/**
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* @author treeroot ];P^q`n=.
* @since 2006-2-2 ?l_>rSly5
* @version 1.0 mu1oD;lQ
*/ pGi "*oZD
public class ImprovedQuickSort implements SortUtil.Sort { ou44vKzS
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private static int MAX_STACK_SIZE=4096; b; SFnZa8
private static int THRESHOLD=10; S.+)">buH
/* (non-Javadoc) V*l0|,9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4/{Io &|
*/ ~'WvIA
(
public void sort(int[] data) { ufdC'2cp8
int[] stack=new int[MAX_STACK_SIZE]; tR5zlm(}
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int top=-1; _%s _w)
int pivot; :):=KowI
int pivotIndex,l,r; ,q#^_/?
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stack[++top]=0; s,^?|Eo;0
stack[++top]=data.length-1; O0xL;@rBe
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while(top>0){ ?lb1K'(
int j=stack[top--]; L%a ni}V
int i=stack[top--]; h<*l=`#
(
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pivotIndex=(i+j)/2; l;L&ijTQD
pivot=data[pivotIndex]; {KL<Hx2M
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SortUtil.swap(data,pivotIndex,j); w\Q3h`.
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file://partition 3V`K^X3
l=i-1; 9AJ!7J#v"
r=j; \%NhggS*
do{ w\;=3C`
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0$,Ag;"^?
SortUtil.swap(data,l,r); ~}4o=O(
} kq:,}fc;B
while(l SortUtil.swap(data,l,r); 8'*z>1ZS5
SortUtil.swap(data,l,j); TE*$NxQ 2
}se)=7d8
Z
if((l-i)>THRESHOLD){ 76)(G/
stack[++top]=i; /,5`#Gte_
stack[++top]=l-1; UL[4sv6\9
} bm1ngI1oI
if((j-l)>THRESHOLD){ =rgWOn8
stack[++top]=l+1; )?pin|_x
stack[++top]=j; b6S86>
} |.:O$/ Tt[
|1 is!leP
} pP?J(0Q~
file://new InsertSort().sort(data); OP2!lEs
insertSort(data); )X\.Xr-6q
} ]Vl5v5_
/** U3lr<(r*
* @param data @D"#B@j
*/ |gxU;"2`5~
private void insertSort(int[] data) { ^i-%FY_i5}
int temp; Oe$cM=Yf
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uA!T@>vl
} U3kf$nbV/J
} gRdE6aIZ
} Di *+Cz;gK
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} l(=#c/f
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归并排序: (fh:q2E#
rxa"ji!)
package org.rut.util.algorithm.support; /GM-#q
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import org.rut.util.algorithm.SortUtil; f`A
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/** (P`{0^O"}
* @author treeroot m1F<L
* @since 2006-2-2 tsfOPth$*
* @version 1.0 .[2MPjg
*/ ).oqlA!
public class MergeSort implements SortUtil.Sort{ a' #-%!]
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/* (non-Javadoc) K/\#FJno
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }%k"qW<Y
*/ }lpcbm
public void sort(int[] data) { >j`*-(`2fa
int[] temp=new int[data.length]; QV .A.DK
mergeSort(data,temp,0,data.length-1); gP(-Op
} M5ZWcD.1
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private void mergeSort(int[] data,int[] temp,int l,int r){ k}lx!Ck
int mid=(l+r)/2; Z7.)[
;
if(l==r) return ; 8!UZ..
mergeSort(data,temp,l,mid); ljt1:@SN(
mergeSort(data,temp,mid+1,r); 3:Z(tM&-O
for(int i=l;i<=r;i++){ m]"YR_
temp=data; C4 Wdt
} 3Vw%[+lY9
int i1=l; J1R%w{
int i2=mid+1; &-b=gnT
for(int cur=l;cur<=r;cur++){ -|)[s[T~m
if(i1==mid+1) (6h7 'r $
data[cur]=temp[i2++]; JyB>,t)
else if(i2>r) bLV@Ts
data[cur]=temp[i1++]; 4uftx1o
else if(temp[i1] data[cur]=temp[i1++]; t&P5Zw*B
else _)_XO92~
data[cur]=temp[i2++]; l?FNYvL
} C>K/C!5?
} s}z,{Y$-t
X! 2|_
} <BU|?T6~
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改进后的归并排序: q!ZmF1sU
]#:xl}'LS
package org.rut.util.algorithm.support; HJcZ~5jf
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import org.rut.util.algorithm.SortUtil; Bp/8 >EO`
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/** "V^jAPDXb
* @author treeroot %[Ds-my2
* @since 2006-2-2 X^.r@tT
* @version 1.0 s lI)"+6
*/ &pba~X.u
public class ImprovedMergeSort implements SortUtil.Sort { rSJ}qRXwU
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private static final int THRESHOLD = 10; {VNeh
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/* ffB]4
* (non-Javadoc) xK
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* A&M/W'$s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >u/yp[Ky
*/ (w^&NU'e
public void sort(int[] data) { `q@~78`
int[] temp=new int[data.length]; EV(/@kN2
mergeSort(data,temp,0,data.length-1); A!Yqj~
} eoL)gIM%
ttKfZ0
private void mergeSort(int[] data, int[] temp, int l, int r) { b,`\"'1
int i, j, k; nWl0R=
int mid = (l + r) / 2; $U0(%lIU
if (l == r) MnS"M[y3
return; (,TO|
if ((mid - l) >= THRESHOLD) f7W=x6Z4
mergeSort(data, temp, l, mid); C`#N
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else .^NV e40O
insertSort(data, l, mid - l + 1); (\I =v".
if ((r - mid) > THRESHOLD) }I10hy~W
mergeSort(data, temp, mid + 1, r); qB:`tHy
else tQ|I$5jNJ
insertSort(data, mid + 1, r - mid); Y~:7l5C
kL3=7t^ 1
for (i = l; i <= mid; i++) { &
vIKNGJ^
temp = data; a,E;R$[!
} MmK\|CtV
for (j = 1; j <= r - mid; j++) { $-0u`=!
temp[r - j + 1] = data[j + mid]; %51pf uL
} >I!(CM":s$
int a = temp[l]; zc{C+:3$^
int b = temp[r]; "D/ fB%h`
for (i = l, j = r, k = l; k <= r; k++) { 8`~]9ej
if (a < b) { Tc*PDt0C
data[k] = temp[i++]; W6iIL:sp
a = temp; GkC88l9z
} else { S- H3UND"
data[k] = temp[j--]; W!(Q_B
b = temp[j]; Xm-63U`w5
} zKutx6=aj
} ={Hbx>p
} Sce9R?II
Zk[#BUA
/** 5jLDe~
* @param data t(yv
* @param l #n7{ 3)
* @param i \[&]kPcDl
*/ ')aYkO{%sb
private void insertSort(int[] data, int start, int len) { X<{m;T `
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &Xav$6+Z1J
} Ll`apKr
} $d=lDN
} r=`>'3
} x
} # 9t/j`{
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堆排序: 3IkG*enI
!:8!\gE^P
package org.rut.util.algorithm.support; 21[F%,{.),
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import org.rut.util.algorithm.SortUtil; #n"/9%35f`
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/** Txh;r.1e
* @author treeroot O+N-x8W{
* @since 2006-2-2 <gy'@w?
* @version 1.0 0d2%CsMS"D
*/ tFQFpbI
public class HeapSort implements SortUtil.Sort{ $3ILVT
4HJrR^
/* (non-Javadoc) Qi61(lK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3C2>
*/ &M!:,B
public void sort(int[] data) { "mf;k^sqS
MaxHeap h=new MaxHeap(); Xy{+=UY
h.init(data); uE$o4X
for(int i=0;i h.remove(); On^#x]
System.arraycopy(h.queue,1,data,0,data.length); 8{YxUD
} V("1\
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private static class MaxHeap{ D/WS
{JgN^R<5<f
void init(int[] data){ p"@|2a
this.queue=new int[data.length+1]; X`b5h}c
for(int i=0;i queue[++size]=data; [oj"Tn(
fixUp(size); SXEiyy[7v
} ht|r+v-
} n3N"Ax
YUE[eD/
private int size=0; qo;\dp1
8(}sZ)6
private int[] queue; *`#,^p`j
b
TRZ^$<AG
public int get() { vF&b|V+,
return queue[1]; Nz;;X\GI
} |@BN+o;`Om
UVK"%kW#(
public void remove() { pA'A<|)K0
SortUtil.swap(queue,1,size--); 4_<Uk
fixDown(1); * 5n:+Tw(
} 8=~>B@'
file://fixdown ShpnFuH
private void fixDown(int k) { lI 1lP 1
int j; lNb\^b
while ((j = k << 1) <= size) {
={^#E?
if (j < size %26amp;%26amp; queue[j] j++; oK6lCGM5
if (queue[k]>queue[j]) file://不用交换 tOw
0(-:iq
break; )a\h5nQI)
SortUtil.swap(queue,j,k); Kxn7sL$]=F
k = j; o3=kF
} u$#7W>R
} 1RA$hW@}
private void fixUp(int k) { )^TQedF
while (k > 1) { s/M~RB!w
int j = k >> 1; J~q+G
if (queue[j]>queue[k]) dI-5%Um
break; ydQS"]\g
SortUtil.swap(queue,j,k); 16|S 0 )
k = j; __j8jEV
} nY)Pxahm 7
} `Tj}4f
3;NRW+
} 7VcVI? ?
n^N]iw{G
} M-N2>i#
ozLJ#eOE9
SortUtil: "N]o5d
wVDB?gy%#
package org.rut.util.algorithm; : qRT9n$
P~e$iBH'
import org.rut.util.algorithm.support.BubbleSort; dU6LB+A
import org.rut.util.algorithm.support.HeapSort; rzDJH:W{2
import org.rut.util.algorithm.support.ImprovedMergeSort; 4&e@>
import org.rut.util.algorithm.support.ImprovedQuickSort; ?LI9F7n
import org.rut.util.algorithm.support.InsertSort; p8l#=]\;
import org.rut.util.algorithm.support.MergeSort; L?x?+HPY.
import org.rut.util.algorithm.support.QuickSort; Z@!W?Ed
import org.rut.util.algorithm.support.SelectionSort; I&8m5F?$`
import org.rut.util.algorithm.support.ShellSort; I})t
s2~dmZ_B|_
/** *GP_ut%
* @author treeroot GDp p`'\
* @since 2006-2-2 !T#y r)
* @version 1.0 "Q{~Bj~
*/ 'V#ew\
public class SortUtil { N?0y<S ?!
public final static int INSERT = 1; C+XZDY(=Z
public final static int BUBBLE = 2; 4rG 7\
public final static int SELECTION = 3; .To:tN#
public final static int SHELL = 4; <C;>$kX
public final static int QUICK = 5; sdYj'e:N
public final static int IMPROVED_QUICK = 6; e oSM@Isu
public final static int MERGE = 7; |SKG4_wGe
public final static int IMPROVED_MERGE = 8; z \>X[yNpA
public final static int HEAP = 9; x9l0UD*+g
mo[<4Uks
public static void sort(int[] data) { 2F@)nh
sort(data, IMPROVED_QUICK); xc.D!Iav
} 9ox|.68q
private static String[] name={ Wxau]uix
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" [P=[hj;
}; o!`O
i5
><Z3<7K9
private static Sort[] impl=new Sort[]{ {@__%=`CCS
new InsertSort(), K#hY bDm
new BubbleSort(), qO{ ZZ*
new SelectionSort(), 2,V+?'^j
new ShellSort(), PMhhPw]
new QuickSort(), 1D p@n
new ImprovedQuickSort(), _G #"B{7
new MergeSort(), ;+34g6
new ImprovedMergeSort(), ^z}lGu
new HeapSort() ~49N
}; /I'u/{KB
9+
l3$
public static String toString(int algorithm){ Y{vwOs
return name[algorithm-1]; QM_X2Ho
} r/hyW6e_
cO+Xzd;838
public static void sort(int[] data, int algorithm) { V<ApHb
impl[algorithm-1].sort(data); 5}bZs` C
} D%UZ'bHN*
q|i%)V`)-
public static interface Sort { $?J+dB
public void sort(int[] data); igBrmaY'
} o 7W Kh=
4:&qTY)H
public static void swap(int[] data, int i, int j) { 5b1uD>,;y
int temp = data; rjHIQC C
data = data[j]; uk[< 6oxz
data[j] = temp; nIQ&gbfO
} Fra>|;do
} 76A>^Bs\/