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。 z#ET-[I
插入排序: aUQq<H 'R
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package org.rut.util.algorithm.support; Ds$;{wl#x
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import org.rut.util.algorithm.SortUtil; EyiM`)!5
/** w}0PtzOe
* @author treeroot JD.z}2+
* @since 2006-2-2
D-/A>
* @version 1.0 3x$ #L!VuU
*/ 3J{'|3x
public class InsertSort implements SortUtil.Sort{ ;* Jd#O
AUd}) UR
/* (non-Javadoc) C8-q<t#SF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pgarGaeq
*/ #YV;Gp(2h
public void sort(int[] data) { ?z.`rD$}(n
int temp; 9w|q':<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~M=`f{-$K
} 'L7.a'
} $1F9TfA
} :>u{BG;=79
5VS<I\o}
} >U].k8a)
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冒泡排序: "O{sdVS
2oRmro
package org.rut.util.algorithm.support; -u(#V#}OV?
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import org.rut.util.algorithm.SortUtil; 5,3h'\ "!
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/** <U";V)
* @author treeroot Ex{]<6UAu
* @since 2006-2-2 K, Vl.-4?
* @version 1.0 ]](hwj
*/ Y2fs$emv
public class BubbleSort implements SortUtil.Sort{ .T2I]d
5Dd;?T>
/* (non-Javadoc) Wh7nli7f_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]v@,>!Wn
*/ 7>TG
]&
public void sort(int[] data) { |gNOv;l
int temp; ~EymD *
for(int i=0;i for(int j=data.length-1;j>i;j--){ G}g+2`
if(data[j] SortUtil.swap(data,j,j-1); o<;"+ @v
} (uE_mEIsv
} C.|MA(7
} p}\!"&,^m
} BRT2 =}A
x$t=6@<]
} k 'o?/
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选择排序: -3C~}~$>`
2zAS
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package org.rut.util.algorithm.support; '?nhpT^
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import org.rut.util.algorithm.SortUtil; .*+&>m7
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/** o_S8fHqjt
* @author treeroot }5|uA/B
* @since 2006-2-2 K(hf)1q
* @version 1.0 Ec|#i
*/ #Uo
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public class SelectionSort implements SortUtil.Sort { A-kI_&g\Og
Cs< d\"+
/* LY7'wONx
* (non-Javadoc) gs'(px
* Z+4J4Ka^!(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F C"dQ
*/ z;LntQZp-
public void sort(int[] data) { !GO4cbdQ
int temp; Z^b1i`v
for (int i = 0; i < data.length; i++) { 9ItsK
int lowIndex = i; ey:3F%
for (int j = data.length - 1; j > i; j--) { dPS}\&1
if (data[j] < data[lowIndex]) { y3lsAe#
lowIndex = j; 8ARpjYZP
} N:0mjHG
} Y|Z*|c.4OK
SortUtil.swap(data,i,lowIndex); N.uw2Y%
} L(iWFy1& T
} \ /o`CV{O
V`G]4}
} PR6{Y]e%
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Shell排序: 3.Y/ZWON
ibh!8" [
package org.rut.util.algorithm.support; >n#Pq{7aF
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import org.rut.util.algorithm.SortUtil; t>^An:xT
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/** Pr" 2d\
* @author treeroot l =#uy
* @since 2006-2-2 &uC7W.|
* @version 1.0 4Vh#Ye:`
*/ Q\}5q3
public class ShellSort implements SortUtil.Sort{ Vg0Rc t
8uNq353
/* (non-Javadoc) S?&ntUah
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rB-&'#3%
*/ Y~,N,>nITu
public void sort(int[] data) { iCx}v[;Ol
for(int i=data.length/2;i>2;i/=2){ wTG6>l ]H
for(int j=0;j insertSort(data,j,i); 26j ; RV
} 0 }
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} #49,7OBU
insertSort(data,0,1); PXWBc\
} |GLa`2q|
@xR=bWY
/** M,zUg_ @
* @param data b8(94t|;U
* @param j W2s6!_AN
* @param i t
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*/ h",kA(+P
private void insertSort(int[] data, int start, int inc) { f/aSqhAW
int temp; qh{hpX)\D
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); x ^&D8&4^
} ar }F^8Ku
} pwr,rAJ}$j
} 6cDe_v|,
!c/G'se
} :T.j;~
D}OvD |<-
快速排序: %8s$l'Q;
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package org.rut.util.algorithm.support; _46
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import org.rut.util.algorithm.SortUtil; w*n@_n={
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/** !/2uO5
* @author treeroot _NA[g:DZ&O
* @since 2006-2-2 llN#4D9s
* @version 1.0 K 0R<a~
*/ hX;JMQ915
public class QuickSort implements SortUtil.Sort{ *Yj!f6 8
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/* (non-Javadoc) DvhJkdLB>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R<}UT
*/
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public void sort(int[] data) { =wEU+R_#o
quickSort(data,0,data.length-1); TL'^@Y7X5
} Z7)la
|
private void quickSort(int[] data,int i,int j){ -*HR0:H
int pivotIndex=(i+j)/2; j
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file://swap d.>Zn?u4L
SortUtil.swap(data,pivotIndex,j); Mwm9{1{
f-$%Ck$%,
int k=partition(data,i-1,j,data[j]); vuN!7*d+
SortUtil.swap(data,k,j); "h58I)O
if((k-i)>1) quickSort(data,i,k-1); l7vU{Fd-h^
if((j-k)>1) quickSort(data,k+1,j); .d/e?H:
},#@q_E
} +9yV'd>U
/** <l>o6K
* @param data 0q}k"(9
* @param i (m:ktd=x
* @param j lfTDpKz3D
* @return ]fiAV|'^
*/ @~g][O#Fu
private int partition(int[] data, int l, int r,int pivot) { -aSj-
do{ 4+?d0
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); df9jT?l
SortUtil.swap(data,l,r); % XvJJ
} +s$` kl
while(l SortUtil.swap(data,l,r); 3pU/Zbb,:
return l; Xlg0u.
} *M^(A}+O
L JW0UF|
} dkUh[yo"H
$Jc>B#1
改进后的快速排序: jc0Trs{Jf
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package org.rut.util.algorithm.support; 7:Cq[u fl
LKX; ^
import org.rut.util.algorithm.SortUtil; _4^#VD#f
3+~m 9:9
/** 4C]>{osv
* @author treeroot SobOUly5{
* @since 2006-2-2 "1I\~]]
* @version 1.0 =pa
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*/ V =9
public class ImprovedQuickSort implements SortUtil.Sort { v#Xl
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private static int MAX_STACK_SIZE=4096; D2N<a= #
private static int THRESHOLD=10; 5oOF|IYi
/* (non-Javadoc) {VK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P[q 'Y^\
*/ aWg*f*2f
public void sort(int[] data) { d,y%:F 4
int[] stack=new int[MAX_STACK_SIZE]; I_"KhBM
mu$0x)
int top=-1; .=`r?#0
int pivot; f?Am)
int pivotIndex,l,r; qi51'@
a Byetc88/
stack[++top]=0; }}s.0Q
stack[++top]=data.length-1; .S{>?2
D^-6=@<3KD
while(top>0){ p 3`odmbN
int j=stack[top--]; W`k||U9
int i=stack[top--]; "o{o9.w
7c8A|E0\mF
pivotIndex=(i+j)/2; GeydVT-
pivot=data[pivotIndex]; Or:a\qQ1
ps@;Z?Q
SortUtil.swap(data,pivotIndex,j);
qPH=2k,H
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file://partition %p d-{KR
l=i-1; kZU
v/]Y.
r=j; \:/~IZdzF
do{ UB9n7L(@c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }.S4;#|hw
SortUtil.swap(data,l,r); jt6q8
} 0D.qc8/V4.
while(l SortUtil.swap(data,l,r); ]>_Ie?L)<
SortUtil.swap(data,l,j); @gM>Lxj
i*l-w4D^U
if((l-i)>THRESHOLD){ +=o?&
stack[++top]=i; ba`V`0p- (
stack[++top]=l-1; K.l7yBm
} jM07&o]D
if((j-l)>THRESHOLD){ Kh'7N!
stack[++top]=l+1; 4Rv.m*^ B
stack[++top]=j; 9]]isE8r
} kKlcK_b;
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} w$fP$ \+
file://new InsertSort().sort(data); E9]\ I>v
insertSort(data); |f}1bJE+
} *;u'W|"/~
/** $kD;*v=
* @param data ;jZfVRl
*/ nMT"Rp
private void insertSort(int[] data) { -RK R.,
int temp; @4FG&
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} ]8~{C>ch$
} 7}%Z>
} 1RM@~I$0
%K/zVYGm&
} 2M`:/ shq
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归并排序: ?y`we6~\1
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package org.rut.util.algorithm.support; + _"AF|
ymo].
import org.rut.util.algorithm.SortUtil; o1^Rx5
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/** gAxf5A_x)
* @author treeroot |%~Zo:Q<$>
* @since 2006-2-2 +B#+'
* @version 1.0 |J+oz7l?-
*/ >"?jW@|g
public class MergeSort implements SortUtil.Sort{ aEvW<jHh
vOV$H le
/* (non-Javadoc) P7D__hoE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yc:y}"
*/ DGrk}
public void sort(int[] data) { 5N
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int[] temp=new int[data.length]; v3I-i|L<)
mergeSort(data,temp,0,data.length-1); FA7q
pc
} X Z4q{^o
WT_4YM\bz
private void mergeSort(int[] data,int[] temp,int l,int r){ QTLGM-Z
int mid=(l+r)/2; 6U(MHxY
if(l==r) return ; A(v5VvgZE
mergeSort(data,temp,l,mid); ~|kSQ7O^
mergeSort(data,temp,mid+1,r); =b_/_b$q
for(int i=l;i<=r;i++){ '5;
/V
temp=data; BH3%dh:9
} 'fS&WVR?
int i1=l; )8@|+'q
int i2=mid+1; Z#znA4;)
for(int cur=l;cur<=r;cur++){ Zog&:]P'F
if(i1==mid+1) al@Hr*'
data[cur]=temp[i2++]; $Si|;j$?
else if(i2>r) rjWn>M
data[cur]=temp[i1++]; W"[Q=$2<<
else if(temp[i1] data[cur]=temp[i1++]; I;GbS`
else 8kYI ~
data[cur]=temp[i2++]; 9ymx;
} -.t/c}a#
} hj+iB,8
efXiZ
} `&w{-om\
b2Oj 1dP1
改进后的归并排序: 0qp Pz|h
&qMt07
package org.rut.util.algorithm.support; L{F[>^1Sb
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import org.rut.util.algorithm.SortUtil; o8c5~fG1
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/** G:4'')T
* @author treeroot dBb
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* @since 2006-2-2 .g?Ppma
* @version 1.0 >hv8zHOO:
*/ p:?h)'bA<
public class ImprovedMergeSort implements SortUtil.Sort { {YMO8
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private static final int THRESHOLD = 10; YS0^!7u
6^NL>|?
/* # ~(lY}
* (non-Javadoc) H84Zg/ ^
* PTP0 _|K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zJH:`~GxE
*/ 32z2c:G
public void sort(int[] data) { JsK_q9]$e
int[] temp=new int[data.length]; k, >*.Yoh
mergeSort(data,temp,0,data.length-1); Wf{&D>
} 4)Ab]CdD
2OZ<t@\OY
private void mergeSort(int[] data, int[] temp, int l, int r) { zXaA5rZO
int i, j, k; ,{Ga7rH*
int mid = (l + r) / 2; RXw }Tb/D8
if (l == r) L2>
)HG
return; XDyFe'1I
if ((mid - l) >= THRESHOLD) K_GqM9
mergeSort(data, temp, l, mid); F~C7$
else $J9/AFzO"
insertSort(data, l, mid - l + 1); QP7N#mh
if ((r - mid) > THRESHOLD) [oG
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mergeSort(data, temp, mid + 1, r); on.m
'-s
else 3eN(Sw@p
insertSort(data, mid + 1, r - mid); auHP^O>4L
hh8U/dVk*
for (i = l; i <= mid; i++) { XM~eocn
temp = data; "Tnmn@
} %@^9(xTE
for (j = 1; j <= r - mid; j++) { 4vyJ<b
temp[r - j + 1] = data[j + mid]; ODCv^4}9
} [B@R(z=H
int a = temp[l]; |\T!,~
int b = temp[r]; @r]1;KG
for (i = l, j = r, k = l; k <= r; k++) { H,Yrk(O-
if (a < b) { CZ.HQc
data[k] = temp[i++]; :RDQP
a = temp; =VGRM#+D
} else { PMZ*ECIJU
data[k] = temp[j--]; bo[[<j!"I
b = temp[j]; `P jS
} JlE b
} ?P"j5
} '@f#GNRT
%o_CD>yD
/** &uXu$)IZ
* @param data tUhr gc
* @param l J5SOPG
* @param i 5@EX,$h
*/ #C+7~ns'
private void insertSort(int[] data, int start, int len) { b|u,[jEB
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zTg&W7oz
} (d# W3
} V"5LNtf
} Hh'o:j(^
} # 66vkf*
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堆排序: @ ]
3`S
dF'oZQz
package org.rut.util.algorithm.support; !Q{~f;L
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import org.rut.util.algorithm.SortUtil; HiEQs|""'
lFD/hz7lc
/** VL2ACv(
* @author treeroot =' &TqiIv"
* @since 2006-2-2 EHda
* @version 1.0 S<>u
*/ VE*&t>I
public class HeapSort implements SortUtil.Sort{ ;_E][m
c:,K{ZR
/* (non-Javadoc) w
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \&4)['4,
*/ M9/J!s
public void sort(int[] data) { DHh30b$c
MaxHeap h=new MaxHeap(); {oRR]>
h.init(data); Jqqt@5Ni
for(int i=0;i h.remove(); 0b+End#mp
System.arraycopy(h.queue,1,data,0,data.length); &W?
hCr
} 2qPQ3-'
ICUI0/J
private static class MaxHeap{ L lVE5f?
..yLtqos
void init(int[] data){ vR'rYDtU@
this.queue=new int[data.length+1]; 3/*<i
for(int i=0;i queue[++size]=data; <%=@Ue
fixUp(size); Mf`@X[-;
} no8FSqLUS~
} g BV66L
nj7\vIR7
private int size=0; O],]\M{GL
Uc5BNk7<=
private int[] queue; Kr74|W=
?o_D#gG*
public int get() { ?#VkzT
return queue[1]; ;(;{~1~
} U\UlQp?
7hl,dtn7
public void remove() { XXC(R
SortUtil.swap(queue,1,size--); *!L
it:H
fixDown(1); fC!+"g55
} CO"Nv
file://fixdown UYsyVY`Fm|
private void fixDown(int k) { q|kkdK|N/Y
int j; );*#s~R
while ((j = k << 1) <= size) { =l1O9/\9
if (j < size %26amp;%26amp; queue[j] j++; +{@hD+
if (queue[k]>queue[j]) file://不用交换 }yMAs
break; K)TMr"j\
SortUtil.swap(queue,j,k); [TX5O\g![
k = j; 2[Vs@X
} yn KgNi
} Gcd'- 1
private void fixUp(int k) { [:bYd}J
while (k > 1) { j$}W%ibj
int j = k >> 1; k+y>xI,
if (queue[j]>queue[k]) SD=9fh0l
break; WcKL=Z?(
SortUtil.swap(queue,j,k); p^?]xD(
k = j; y<*/\]t9L[
} +<\.z*
} FAF+ }
bs\7 juHt
} ,|Lf6k
^HI}bS1+|
} B&4NdL/
kc}&\y
SortUtil: h-=lZ~W~
i8>^{GODR
package org.rut.util.algorithm; z.]
w[?E
oFI$Y
import org.rut.util.algorithm.support.BubbleSort; GJbU1k]
import org.rut.util.algorithm.support.HeapSort; U+'h~P'4
import org.rut.util.algorithm.support.ImprovedMergeSort; EmubpUS;
import org.rut.util.algorithm.support.ImprovedQuickSort; +N>&b%
import org.rut.util.algorithm.support.InsertSort; i9quP"<9
import org.rut.util.algorithm.support.MergeSort; A"R5Fd%6pc
import org.rut.util.algorithm.support.QuickSort; 9ZXEy }q57
import org.rut.util.algorithm.support.SelectionSort; V~_aM@q1
import org.rut.util.algorithm.support.ShellSort; ?s5hckhh
=#sr4T
/** :/941?%M
* @author treeroot UsBtk
* @since 2006-2-2 !(-S?*64l
* @version 1.0 MPF;P&6
*/ D}6~2j
public class SortUtil { n0<I
public final static int INSERT = 1; MNZD-[
public final static int BUBBLE = 2; 5p`.RWls
public final static int SELECTION = 3; ELqpIXq#
public final static int SHELL = 4; sQ>L3F;A`
public final static int QUICK = 5; 6;vfl*
public final static int IMPROVED_QUICK = 6; cR"?EQ] `N
public final static int MERGE = 7; .iXIoka
public final static int IMPROVED_MERGE = 8; Zm~oV?6
public final static int HEAP = 9; Rw#4 |&
yp.\KLq8)
public static void sort(int[] data) { #gd`X|<Ch
sort(data, IMPROVED_QUICK); y0f"UH/
} MW$
X4<*KD
private static String[] name={ <u%&@G$F>
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "~^#{q
}; j`pX2S
tsvh/)V
private static Sort[] impl=new Sort[]{ R@Kzdeo
new InsertSort(), =w <;tb
new BubbleSort(), ae`6hW2
new SelectionSort(), +ZK12D}
new ShellSort(), )T26cT$
new QuickSort(), G>yTv`-
new ImprovedQuickSort(), XlGDv*d:#d
new MergeSort(), S eTn]
new ImprovedMergeSort(), N5\]VCX
new HeapSort() ~v+A6N:qC
}; !H[K"7w
vRn"0Mzl8
public static String toString(int algorithm){ c mI&R(
return name[algorithm-1]; #)hJ.0~3
} Tz{f5c&
V$';B=M
public static void sort(int[] data, int algorithm) { xpjv@P
impl[algorithm-1].sort(data); 1so9w89
} F.[E;gOTo
uiQR RT
public static interface Sort { y2:~_MD
public void sort(int[] data); >^5UXQr
} EmO{lCENk
suP/I?4'@
public static void swap(int[] data, int i, int j) { ]= nM|e
int temp = data; 9yt)9f
data = data[j]; _cw~N
p
data[j] = temp; jj$D6f/mOG
} ub,GF?9
} ZN `D!e6