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。 3aK/5)4|B
插入排序: ,pc\
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BUp,bJpO
package org.rut.util.algorithm.support; @['4 X1pqt
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import org.rut.util.algorithm.SortUtil; .*0`}H+_
/** XyM?Dc5,
* @author treeroot +ISXyGu
* @since 2006-2-2 C/sDyv$
* @version 1.0 ^KK9T5H
*/ 8N58w)%7`
public class InsertSort implements SortUtil.Sort{ xUG:x4Gz+
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/* (non-Javadoc) *`(/wE2v]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A\6Q*VhK
*/ JW`Kh*,~<
public void sort(int[] data) { 4
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int temp; XI rNT:h4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |H(Mmqgk
} lvyD#|P
} $ZQ?E^> B
} _tGR:E
e 1k\:]6
} $S|2'jc
8/4Gr8o
冒泡排序: aD5G0d?u
X?F$jX|c
package org.rut.util.algorithm.support; uy,ySBY
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import org.rut.util.algorithm.SortUtil; _z3Hl?qk=
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/** gUrb\X
* @author treeroot TF@HwF"#
* @since 2006-2-2 {]a 6o[}u
* @version 1.0 R+s_uwS
*/ jJ' LM>e
public class BubbleSort implements SortUtil.Sort{
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/* (non-Javadoc) SwDUg}M~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {mlJ E>~%
*/ `tCOe
public void sort(int[] data) { ? }k~>. \
int temp; 7 -(LWH
for(int i=0;i for(int j=data.length-1;j>i;j--){ }UzO_&Z#6
if(data[j] SortUtil.swap(data,j,j-1); <IF\;,.c
} jZ'y_
} JMMsOA_]
} J{Z-4y
} zn |=Q$81
@QAyXwp
} 6$'6x2,
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选择排序: u%#s_R
IXSCYqoK
package org.rut.util.algorithm.support; '9,14e6
lB\"*K;
import org.rut.util.algorithm.SortUtil; P80z@!
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/** n9zS'VU
* @author treeroot \w
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* @since 2006-2-2 !(!BW9Zt+
* @version 1.0 r|Y|uv0
*/ tk^1Ga3
public class SelectionSort implements SortUtil.Sort { VD\pQ.=
Lp \%-s#5s
/* k?.HW?=zy
* (non-Javadoc) lA4Bq
* NLJD}{8Ot
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n7vLw7
*/
/D[GXX
public void sort(int[] data) { 7p?6j)rj
int temp; Y/t:9Aau
for (int i = 0; i < data.length; i++) { y*M,&,$
int lowIndex = i; p6V`b'*>
for (int j = data.length - 1; j > i; j--) { f77uqv(Y
if (data[j] < data[lowIndex]) {
*it(o
lowIndex = j; ];P^q`n=.
} Ih}I`wY-
} JH~v e
SortUtil.swap(data,i,lowIndex); HrA6wn\O
} Xu1l6jr_
} u.gh04{5
^i{B8]2,
} %*.;3;m
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Shell排序: cU25]V^{\
5 TD"
package org.rut.util.algorithm.support; lLHHuQpuj
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import org.rut.util.algorithm.SortUtil; 5eC5oX>
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/** a9GOY+;bf
* @author treeroot b`n+[UCPtn
* @since 2006-2-2 D PnKr/
* @version 1.0 {uO8VL5+Qx
*/ 9p!V?cH#8
public class ShellSort implements SortUtil.Sort{ n=RAE^[M
k=[!{I
/* (non-Javadoc) Z'GOp?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /UjRuUC]
*/ NQ<~$+{
public void sort(int[] data) { I}Z[F,}*J
for(int i=data.length/2;i>2;i/=2){ -A9 !Y{Z
for(int j=0;j insertSort(data,j,i); Y#PbC
} ,{c9Lv%@J
} [;VNuF
insertSort(data,0,1); _ Z6/r^c
} r0kA47
J+&AtGq]u
/** J
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* @param data tc@U_>{
* @param j 5(MWgC1
* @param i gFJ&t^yL
*/ -e%=Mpq.
private void insertSort(int[] data, int start, int inc) { hQBeM7$F_
int temp; 0$,Ag;"^?
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !EM21Sc
} Ms(;B*
} kq:,}fc;B
} 8Es]WR5
^
b]s=Uv#)
} TE*$NxQ 2
0+8ThZ?n
快速排序: %_1~z[Dv
76)(G/
package org.rut.util.algorithm.support; j:|60hDz^
d\, 4Wet;#
import org.rut.util.algorithm.SortUtil; UL[4sv6\9
##u+[ !
/** xP'IyABx
* @author treeroot =rgWOn8
* @since 2006-2-2 7&klX
* @version 1.0 )+ Wr- Yay
*/ b6S86>
public class QuickSort implements SortUtil.Sort{ %kJ:{J+w]
j&fr4t3
/* (non-Javadoc) !{s$V2_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ue/6DwUv
*/ @V]
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public void sort(int[] data) { +M@G 8l
quickSort(data,0,data.length-1); (eJr-xZ/
} $t1]w]}d
private void quickSort(int[] data,int i,int j){ SlZL%C;
int pivotIndex=(i+j)/2; F4Ft~:a
file://swap U3lr<(r*
SortUtil.swap(data,pivotIndex,j); |i?AtOt@f
$Miii`VS9
int k=partition(data,i-1,j,data[j]); ~<v.WP<:
SortUtil.swap(data,k,j); wXZ.D}d
if((k-i)>1) quickSort(data,i,k-1); yixW>W}
if((j-k)>1) quickSort(data,k+1,j); WGG|d)'@
A
i9*w?C
} K;6K!6J:[
/** )0AE*S
* @param data ' QT(TF>
* @param i =JO|m5z8>
* @param j =oT@h
9VI
* @return U]hQ#a+
*/ 9aZ3W<N`M
private int partition(int[] data, int l, int r,int pivot) { kc8GnKM&mc
do{ Q(k$HP
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K^{`8E&A
SortUtil.swap(data,l,r); Cqg}dXn'
} 2y_rsu\
while(l SortUtil.swap(data,l,r); (GPJ=r
return l; D{'Na5(
} T,7Y7MzF
tt J,rM
} G:WMocyXI'
K!I]/0L
改进后的快速排序: `yYgL@Zt
dN |w;|M
package org.rut.util.algorithm.support; //ZB B,[@
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import org.rut.util.algorithm.SortUtil; 308w0eP
?]9uHrdsN}
/** aE#ZTc=
* @author treeroot h*%T2
* @since 2006-2-2 7U.g4x|<
* @version 1.0 d'[aOH4}
*/ 0E\R\KO$>
public class ImprovedQuickSort implements SortUtil.Sort { :R_{tQ-WG
6-KC[J^Xo
private static int MAX_STACK_SIZE=4096; j&T/.]dX&
private static int THRESHOLD=10; N8D'<BUC
/* (non-Javadoc) QwT]|
6>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i+&="Z@
*/ ~d5"<`<^o
public void sort(int[] data) { _\]D<\St
int[] stack=new int[MAX_STACK_SIZE]; _"0n.JQg
y\0^c5}
int top=-1; t_]UseP$RF
int pivot; |!!E5osXq
int pivotIndex,l,r; /mD KQ<
[7I|8
stack[++top]=0; )&dhE^
O
stack[++top]=data.length-1; cWRB=`=qz
!+hX$_RT
while(top>0){ )&R;!#;5
int j=stack[top--]; ['R=@.
int i=stack[top--]; 3lL:vD5(
M0]l!x#7
pivotIndex=(i+j)/2; "apv)xdW
pivot=data[pivotIndex]; KG3*~G
=JVRm
2#*
SortUtil.swap(data,pivotIndex,j); =dA T^e##
(ZEVbAY?i
file://partition 2{V|
l=i-1; VsZ_So;
r=j; 3&y
u
do{ 3@"VS_;?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); iL,3g[g
SortUtil.swap(data,l,r); rXm!3E6JL
} A\#?rK
while(l SortUtil.swap(data,l,r); ~36c0 =
SortUtil.swap(data,l,j); *(>$4$9n
wj'iU&aca
if((l-i)>THRESHOLD){ 0x`:jz`
stack[++top]=i; ycE<7W
stack[++top]=l-1; @nT8[v
} (QRl
-| +
if((j-l)>THRESHOLD){ 23OVy^b
stack[++top]=l+1; aSF&^/j
stack[++top]=j; 6op\g].P
} RDqC$Gu
njq-iU
} X4k/7EA
file://new InsertSort().sort(data); F_r eBPx
insertSort(data); /uyQ>Y*-\Y
} 4Dd9cG,lN
/** RsOK5XnQn
* @param data "LxJPt\
*/ H~~(v52wD
private void insertSort(int[] data) { >u/yp[Ky
int temp; >b$<lo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
;<][upn
} dY|jV}%T
} F"F(s!
} /Z@.;M
CTP%
} cq=R
2 sOc]L:9
归并排序: 4dok/ +Ec
Qdn:4yk
package org.rut.util.algorithm.support; )Z _i[1V
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import org.rut.util.algorithm.SortUtil; Z*QRdB%,
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/** (\I =v".
* @author treeroot }I10hy~W
* @since 2006-2-2 B~ez>/H^
* @version 1.0 'H9~rq7
*/ :Aa^afjJw
public class MergeSort implements SortUtil.Sort{ >lj3MNSH
$_ i41f[
/* (non-Javadoc) DVS7N_cx2o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c"$_V[m
*/ -)Vj08aP
public void sort(int[] data) { s-ou ;S3s
int[] temp=new int[data.length]; A^Zs?<C-
mergeSort(data,temp,0,data.length-1); &p%c tg
} +OH."4Z
V&nN/CF
private void mergeSort(int[] data,int[] temp,int l,int r){ .=FJ5?:4i%
int mid=(l+r)/2; [5 V
if(l==r) return ; z7_./ksQ
mergeSort(data,temp,l,mid); jl@8pO$
mergeSort(data,temp,mid+1,r); Fi`:G}
for(int i=l;i<=r;i++){ z[rB/|2
temp=data; o99 a=x6
} zKutx6=aj
int i1=l; 51,m^veO
int i2=mid+1; ,]Ma, 2
for(int cur=l;cur<=r;cur++){ dkLR
Q
if(i1==mid+1) *,pqpD>
data[cur]=temp[i2++]; :h3JDQe:.
else if(i2>r) x V e!
data[cur]=temp[i1++]; CMr`n8M
else if(temp[i1] data[cur]=temp[i1++]; B::?
else "osYw\unI
data[cur]=temp[i2++]; '8JaD6W9S
} 'YeJGzsJp
} TGLXvP&
\
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q
} QHh#O +by#
~h/U ;Da
改进后的归并排序: UGMdWq
gkdjH8(2
package org.rut.util.algorithm.support; o(zg_!P
r__M1
!3
import org.rut.util.algorithm.SortUtil; %Fv)$ :b
#? *jdN:
/** #n"/9%35f`
* @author treeroot ?xet:#R'
* @since 2006-2-2 Txh;r.1e
* @version 1.0 S!]}}fKEFm
*/ 3:(`#YY
public class ImprovedMergeSort implements SortUtil.Sort { /$=^0v+
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private static final int THRESHOLD = 10; U&XoT-p$L
KOQTvJ_#
/* V_pBM
* (non-Javadoc) /b|sv$BN
* &M!:,B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "mf;k^sqS
*/ i&$uG[&P
public void sort(int[] data) { #o RUH8
int[] temp=new int[data.length]; ;D1IhDC
mergeSort(data,temp,0,data.length-1); +\%zy=
} f/x "yUq
1 W u
private void mergeSort(int[] data, int[] temp, int l, int r) { D/WS
int i, j, k; {JgN^R<5<f
int mid = (l + r) / 2; OOCeZ3yF(
if (l == r) &}cie"\L
return; DbN'b(+
if ((mid - l) >= THRESHOLD) Q [{vU
mergeSort(data, temp, l, mid); F*4+7$E0B
else 1|VJN D
insertSort(data, l, mid - l + 1); NP8TF*5V
if ((r - mid) > THRESHOLD) /HRaX!|E#
mergeSort(data, temp, mid + 1, r); x_K%
else ~ #CCRUhM
insertSort(data, mid + 1, r - mid); J (h>
1 GdD
for (i = l; i <= mid; i++) { l_c?q"X
temp = data; lu_Gr=#O
} 5o/rV.I
for (j = 1; j <= r - mid; j++) { Jy_'(hG
temp[r - j + 1] = data[j + mid]; m"R(_E5
} g8Z14'Ke
int a = temp[l]; 4lA+V,#
int b = temp[r]; o[#a}5Y
for (i = l, j = r, k = l; k <= r; k++) { >gl.(b25C
if (a < b) {
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data[k] = temp[i++]; ja/[PHq"
a = temp; MlFvDy
} else { jGn^<T\
data[k] = temp[j--]; n lW&(cH
b = temp[j]; 0, /x#
} &iZYBa
} kdCOcJB
} {P&^Erx
o2
/** wY#mL1dF
* @param data Bv8C_-lV/
* @param l VaxO L61xE
* @param i __j8jEV
*/ nY)Pxahm 7
private void insertSort(int[] data, int start, int len) { `Tj}4f
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3;NRW+
} 7VcVI? ?
} n^N]iw{G
} M-N2>i#
} +`8)U 3u0
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堆排序: wVDB?gy%#
: qRT9n$
package org.rut.util.algorithm.support; P~e$iBH'
dU6LB+A
import org.rut.util.algorithm.SortUtil; I0K!Kcu5Iu
09Y?!,
/** |@.<}/
* @author treeroot p8l#=]\;
* @since 2006-2-2 L?x?+HPY.
* @version 1.0 Z@!W?Ed
*/ I&8m5F?$`
public class HeapSort implements SortUtil.Sort{ I})t
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/* (non-Javadoc) cg00t+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t[hocl/6
*/ on?/tHys
public void sort(int[] data) { +E|ouFI
MaxHeap h=new MaxHeap(); /T[ICd2J
h.init(data); CDj Dhs
for(int i=0;i h.remove(); e"#D){k#
System.arraycopy(h.queue,1,data,0,data.length); 4Z9wzQ>
} ~+C?][T
8"mW!M
private static class MaxHeap{ D^55:\4(
W"(`n4hi3
void init(int[] data){ pm~;:#z7
this.queue=new int[data.length+1]; N+qLxk
for(int i=0;i queue[++size]=data; "H<#91^|
fixUp(size); yB%)D0
} p"IS"k%
} D|j\ nQ
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l
private int size=0; bs EpET
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private int[] queue; S.|kg2
AYIz;BmWy
public int get() { <[:7#Yo
g
return queue[1]; 2pa3}6P+
} d`uO7jlm
v9m;vWp
public void remove() { +\GZ(!~
SortUtil.swap(queue,1,size--); lk1Gs{(qhH
fixDown(1); @B[Cc`IN"
} l/zC##1+.
file://fixdown P<!$A
private void fixDown(int k) { (%y c5+f!
int j; !]+Z%ed`%
while ((j = k << 1) <= size) { 5!jNL~M
if (j < size %26amp;%26amp; queue[j] j++; 6F.7Ws<
if (queue[k]>queue[j]) file://不用交换 nDB 2>J
break; 1] Q2qs
SortUtil.swap(queue,j,k); #0hNk%X=
k = j; "%''k~UD4
} &4&33D
} .#55u+d,
private void fixUp(int k) { ywynx<Wg
while (k > 1) { Kt,ynA
int j = k >> 1; 34wM%@D*c
if (queue[j]>queue[k]) t-*|Hfp*^
break; s^YTI\L
\
SortUtil.swap(queue,j,k); q%k(M[
k = j; a`b zFu{
} RE
$3| z
} |W*@}D
%=9yzIjbAt
} 5%?b5(mnD
GyAgPz
} o.3YM.B#
]]=fA 4(
SortUtil: XL
PpxG
?Wg{oB@(
package org.rut.util.algorithm; *UBP]w
}"?nU4q;S
import org.rut.util.algorithm.support.BubbleSort; Zxc7nLKF~
import org.rut.util.algorithm.support.HeapSort; (s$u_aq77
import org.rut.util.algorithm.support.ImprovedMergeSort; ? x"HX|n
import org.rut.util.algorithm.support.ImprovedQuickSort; !@<@QG-
import org.rut.util.algorithm.support.InsertSort; [Z5[~gP3
import org.rut.util.algorithm.support.MergeSort; -9>LvLU
import org.rut.util.algorithm.support.QuickSort; dG-or
import org.rut.util.algorithm.support.SelectionSort; XQ3*
import org.rut.util.algorithm.support.ShellSort; Np<s[dQ
ur<eew@8@i
/** 6Z&u
* @author treeroot ]osx.
* @since 2006-2-2 ]TBtLU3
* @version 1.0 o9Txo
(tYU
*/ YYE8/\+B.
public class SortUtil { Z@,PZ
public final static int INSERT = 1; WVWS7N\
public final static int BUBBLE = 2; n(1wdl Ep
public final static int SELECTION = 3; qfGtUkSSb
public final static int SHELL = 4; 6`qr:.
public final static int QUICK = 5; Q:kVCm/;
public final static int IMPROVED_QUICK = 6; i&pJg1
public final static int MERGE = 7; 6b]1d04hT
public final static int IMPROVED_MERGE = 8; ZEj!jWP2m
public final static int HEAP = 9; /MKNv'5&!%
_+\:OB[Y
public static void sort(int[] data) { ,9Z2cgXwJ
sort(data, IMPROVED_QUICK); nx-1*
} O~h94 B`
private static String[] name={ (D>y6r>r
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" XpgV09.EE
}; | 7 m5P@X
dv'E:R(a
private static Sort[] impl=new Sort[]{ =@JS88+
new InsertSort(), n</k/Mk}
new BubbleSort(), qcTmsMpj
new SelectionSort(), c.(Ud`jc
new ShellSort(), ZD)0P=%
new QuickSort(), J3~hzgY
new ImprovedQuickSort(), ,](v?v.[4
new MergeSort(), Jh$"f r3
new ImprovedMergeSort(), F)/~p&H
new HeapSort() 1Y=AT!"V
}; ', sQ/#S
xvR?~
public static String toString(int algorithm){ z1f^p7$M?
return name[algorithm-1]; <TR/ `
} my ;
ik2-
OM
public static void sort(int[] data, int algorithm) { &[5n0e[
impl[algorithm-1].sort(data); `RL,ZoYuu
} 8
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V$dJmKg
public static interface Sort { G@!_ZM8h
public void sort(int[] data); g\o{}Q%X
} .-SF$U_P*a
N7*CP|?E
public static void swap(int[] data, int i, int j) { .pM
&jni Y
int temp = data; Z
7s;F}=
data = data[j]; 3@^>#U
data[j] = temp; hNgpp-
} -DP8NTl"
} Gla@l<