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。 nOzTHg8
插入排序: glIIJ5d|,
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package org.rut.util.algorithm.support; eZ$1|Sj]j
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import org.rut.util.algorithm.SortUtil; k=
1+mG
/** xGk4KcxKs
* @author treeroot H43D=N&
* @since 2006-2-2 /a)=B)NH
* @version 1.0 Xh!Pg)|E
*/ GQWTQIl]
public class InsertSort implements SortUtil.Sort{ d'D\#+%>=
l_EI7mJ
/* (non-Javadoc) ' "
yl>"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =_3qUcOP
*/ 3o^M%
public void sort(int[] data) { <-aI%'?*
int temp; TnAX;+u
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
p$ v +L
} ,KaWP
} EOC"a}Cq-
} YNk|UwJi
ZM!~M>B9R
} Jx?>1q=M
wB"Gw` D
冒泡排序: 5(Oc"0''H
#0H[RU?
package org.rut.util.algorithm.support; >Sah\u`
63$m& ]x
import org.rut.util.algorithm.SortUtil; essW,2,rjC
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/** mr.DP~O:9p
* @author treeroot Ev#aMK
* @since 2006-2-2 LXl! !i%
* @version 1.0 yK3z3"1M?
*/ EV$n>.
public class BubbleSort implements SortUtil.Sort{ pQ8+T|0x
GrC")Z|3u
/* (non-Javadoc) }C}_
I:=C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UlytxWkUX
*/ w7u >|x!
public void sort(int[] data) { `$- Ib^
int temp; ZZ7U^#RT
for(int i=0;i for(int j=data.length-1;j>i;j--){ d5hE!=
if(data[j] SortUtil.swap(data,j,j-1); s ~G{-)*
} k=_@1b-
} W -&5
v
} _Oq\YQb v
} ~V)E:(
;_\P;s
} HbVLL`06*
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选择排序: BZ9iy~
~yN,F pD
package org.rut.util.algorithm.support; dW68lVWq_
<^{: K`
import org.rut.util.algorithm.SortUtil; 5;Xrf=
EVsZ:Ra^k
/** (=9&"UH
* @author treeroot 5{Wl(jwb
* @since 2006-2-2 cK&oC$[r-
* @version 1.0 M='Kjc>e
*/ 3FN? CN] O
public class SelectionSort implements SortUtil.Sort { ri
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M-Bw9`#Jw
/* ev $eM
* (non-Javadoc) 3I+pe;
* iXFaQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q0wVV
*/ nCU4a1rZ
public void sort(int[] data) { \ 714 Pyy
int temp; LNkyV*TI
for (int i = 0; i < data.length; i++) { {W]jVh p
int lowIndex = i; Rd)QVEk>SD
for (int j = data.length - 1; j > i; j--) { ^dqEOW
if (data[j] < data[lowIndex]) { yhaYlYv[_3
lowIndex = j; /eQn$ZRP,
} 4KCxhJq
} ?}[keSEh>
SortUtil.swap(data,i,lowIndex); 32yNEP{
} pC6_
jIZ
} *C \O]r:'
AM>:AtY
} .FU EF)
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Shell排序: `c(@WK4
|wDCIHzQ
package org.rut.util.algorithm.support; Ju<D7
AN@Vos
Cu
import org.rut.util.algorithm.SortUtil; jJ|;Nwm<[
^ ;a[v^&9
/** y.zQ `
* @author treeroot f@0`,
* @since 2006-2-2 <mN3:G
* @version 1.0 F}Au'D&n_
*/ 5WUrRQ?E
public class ShellSort implements SortUtil.Sort{ 9L};vkYk#
|NI0zd
/* (non-Javadoc) e\<I:7%Rg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (rJvE*
*/ )7^jq|
public void sort(int[] data) { &kG<LGXP#
for(int i=data.length/2;i>2;i/=2){ -Q;
w4@
for(int j=0;j insertSort(data,j,i); {-xnBx
} U^xFqJY6
} L$g;^@j
insertSort(data,0,1); :|a[6Uwl\V
} b7-a0zaN
QU t!fF@t
/** 157X0&EX
* @param data ZU`"^FQ3A
* @param j W>~V?%F&'
* @param i 4P8:aZM
*/ !>Xx</iD1
private void insertSort(int[] data, int start, int inc) { ^N]*Zf~N?
int temp; 5GKz@as8
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9g7T~|P
} }^H_|;e1p
} ,0~=9dR
} MYjCxy-;A
0PN{
+<?.
} 6[cMPp x
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快速排序: d^7<l_u~ !
fRiHs\+
package org.rut.util.algorithm.support; 8L:0Wp
{?8rvAjY
import org.rut.util.algorithm.SortUtil; ?^dyQhb
q45n.A6a
/** z8oSh t`+
* @author treeroot 344- ~i*
* @since 2006-2-2 Px<;-H`
* @version 1.0 %\A~w3 E
*/ ek9%Xk8
public class QuickSort implements SortUtil.Sort{ e.N#+
,q4 Y
N-3
/* (non-Javadoc) D3]_AS&\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?IK[]=!
*/ ||hd(_W8
public void sort(int[] data) { C-8@elZ1
quickSort(data,0,data.length-1); YJ6Xq||_
} <*L8kNykK
private void quickSort(int[] data,int i,int j){ E:2Or~
int pivotIndex=(i+j)/2; NunT1ved
file://swap Af;$}P
SortUtil.swap(data,pivotIndex,j); p|zW2L
x`4">:IA
int k=partition(data,i-1,j,data[j]); [8ih-k
SortUtil.swap(data,k,j); o.,hCg)X
if((k-i)>1) quickSort(data,i,k-1); "zugnim
if((j-k)>1) quickSort(data,k+1,j); ?n}L+|
%NvY~,
} BwR)--75
/** CGQ`i
* @param data NOvN8.K%
* @param i k3&Wv
* @param j ;aSEv"iWX
* @return K#>B'>A\
*/ #(OL!B
private int partition(int[] data, int l, int r,int pivot) { bS*9eX=K
do{ >6c{CYuT
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L!\I>a5C0G
SortUtil.swap(data,l,r); cG.4%Va@s_
} #jQITS7
while(l SortUtil.swap(data,l,r); lyP<&<Y5
return l; RJ`F2b sYN
} SJ<nAX
0L'h5i>H)
} oYW:ptJ
HJDM\j*5
改进后的快速排序: 7a2uNt,X
]'hz+V31%
package org.rut.util.algorithm.support; zFlW\wc
D_g+O"];P
import org.rut.util.algorithm.SortUtil; ]`LMyt0
-{^Gzui
/** vForj*Xo
* @author treeroot cY5h6+ _
* @since 2006-2-2 <%!EI@N
* @version 1.0 o]@?QAu
*/ %5'6^bT
public class ImprovedQuickSort implements SortUtil.Sort { 6]M(ElV1H
`rvS(p[s
private static int MAX_STACK_SIZE=4096; {q:6;yzxl
private static int THRESHOLD=10; HUZI7rC[=)
/* (non-Javadoc) ^]K_k7`I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zpJQ7hym
*/ Zv-#v
public void sort(int[] data) { q.*k
J/L
int[] stack=new int[MAX_STACK_SIZE]; _G@)Bj^*
[:Sl^ Z&6M
int top=-1; -GH>12YP
int pivot; 'vBuQinn
int pivotIndex,l,r; o^mW`g8[
#>}cuC@
stack[++top]=0; t~3!| @3i
stack[++top]=data.length-1; `$05+UU
H+` Zp
while(top>0){ Pa+%H]vB
int j=stack[top--]; {;q
zz9 |
int i=stack[top--]; "d%o%
w~Aw?75t
pivotIndex=(i+j)/2; v#TU7v?~
pivot=data[pivotIndex]; N^v"n*M0|
|Y4c+6@_
SortUtil.swap(data,pivotIndex,j); ^DD]jx
9J*.'Y
file://partition K9]L>Wj
l=i-1; ",Mr+;;:[
r=j; Dc2H<=];
do{ \<TWy&2&
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +xp)la.
SortUtil.swap(data,l,r); m9 1Gc?c
} @kd`9Yw
while(l SortUtil.swap(data,l,r); G8}k9?26(
SortUtil.swap(data,l,j); jBb:)
A{MMY{K3
if((l-i)>THRESHOLD){ z#m ~}
stack[++top]=i; wt]onve}%
stack[++top]=l-1; Z):q 1:y
} MR}=tO
if((j-l)>THRESHOLD){ ~7ZWtg;B
stack[++top]=l+1; x. 8fxogz
stack[++top]=j; VX0}x+LJ
} L xP%o
Y'*oW+K
} &.F]-1RN[
file://new InsertSort().sort(data); f}=>c|Do
insertSort(data); H}?"2jF
} id+ ~ V
/** ?k@^U9?R
* @param data qz95)
*/ 0~4Ww=#
private void insertSort(int[] data) { E6XDn`:
int temp; \xG_q>1_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LGB}:;$AL
} c^3,e/H
} iSbPOC7
} ||D PIn]
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} x n?$@
4(
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归并排序: MQ#k`b#()
%tB7 &%ut
package org.rut.util.algorithm.support; 2ca#@??R
`3g5n:"g\
import org.rut.util.algorithm.SortUtil; }k;wSp[3
7cB/G:{
/** :er(YWF:
* @author treeroot |P@N}P@
* @since 2006-2-2 ,R.rxoO
* @version 1.0 gu|=uW K
*/ Wn2'uZ5If
public class MergeSort implements SortUtil.Sort{ BMug7xl"
.J<t]
/* (non-Javadoc) 0CO@@`~4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9HB+4q[
*/ xpX<iT>5u
public void sort(int[] data) { u8.F_'` z
int[] temp=new int[data.length]; _AzI\8m
mergeSort(data,temp,0,data.length-1); .do8\
} ~[%_]/#&%z
t0,=U8]w
private void mergeSort(int[] data,int[] temp,int l,int r){ oR7[[H.4
int mid=(l+r)/2; bmu] zJ
if(l==r) return ; 60;_^v
mergeSort(data,temp,l,mid); eSQkW
mergeSort(data,temp,mid+1,r); d~ +(g!
for(int i=l;i<=r;i++){ _B>'07D0
temp=data; ^"<x4e9+j
} 4C/G &w&
int i1=l; 4sRM"w;
int i2=mid+1; fV@[S
for(int cur=l;cur<=r;cur++){ ?VlGTMaS+
if(i1==mid+1) ~UJ.A<>Fh
data[cur]=temp[i2++]; HjIIhl?UY
else if(i2>r) ,OWk[0/
data[cur]=temp[i1++]; `;Ho<26
else if(temp[i1] data[cur]=temp[i1++]; yts@cd`$
else C$q};7b1N
data[cur]=temp[i2++]; 3~{I/ft
} XLC9B3Jt
} )9^)t
Z#.1p'3qm1
} Mgr?D
"\i H/
改进后的归并排序: r4pX47H
d(|q&b:
package org.rut.util.algorithm.support; " i:[|7
q>Di|5<y
import org.rut.util.algorithm.SortUtil; NB1KsvD{
1Y87_o'd
/** r1}^\C
* @author treeroot "MU-&**
* @since 2006-2-2 <l(n)|H1P
* @version 1.0 MA,*$BgZ
*/ ltfKqY-
public class ImprovedMergeSort implements SortUtil.Sort { <3!Al,!ej@
)by7[I0v
private static final int THRESHOLD = 10; vhPlH0
yUj`vu2
/* s3eS` rK-
* (non-Javadoc) UAPd["`)y
* (P`=9+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :h5G|^
*/ ?TeozhUY
public void sort(int[] data) { b3EGtC}^
int[] temp=new int[data.length]; 'y\Je7
mergeSort(data,temp,0,data.length-1); 23P&n(.
} +l^tT&s;f
jB8Q% {%
private void mergeSort(int[] data, int[] temp, int l, int r) { ele@xl
int i, j, k; <Xl#}6II
int mid = (l + r) / 2; %ggf|\-e
if (l == r) Asv]2> x
return; XHekz6_
if ((mid - l) >= THRESHOLD) ?<${?L>
mergeSort(data, temp, l, mid); )i}j\";>L
else OL>)SJj5
insertSort(data, l, mid - l + 1); Qn7T{ BW
if ((r - mid) > THRESHOLD) '{cSWa|
#
mergeSort(data, temp, mid + 1, r); Rjq Xz6
else ss[`*89
insertSort(data, mid + 1, r - mid); wn.~Dx
][wb4$2
for (i = l; i <= mid; i++) { ]R_R`X?
temp = data; n9xP8<w8
} Iz1x| EQ
for (j = 1; j <= r - mid; j++) { [a04(
2g
temp[r - j + 1] = data[j + mid]; i+h*<){X
} iI{L>
int a = temp[l]; <mQXS87
int b = temp[r]; LP6p
for (i = l, j = r, k = l; k <= r; k++) { l3sF/zkH
if (a < b) { SK
lvZ
data[k] = temp[i++]; _8a;5hS
a = temp; qS#G7~ur>y
} else { Hl,{4%]
data[k] = temp[j--]; >=[uLY[aK
b = temp[j]; eJ99 W=
} hE|P|0U,n
} .Q%Hi7JMi
} ,c4HicRJ#
~f h
/** g3z/yj
* @param data y6nP=g|')>
* @param l 0n{.96r0R
* @param i RNi%6A1
*/ \IE![=p\w
private void insertSort(int[] data, int start, int len) { -NXxxK
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !HvA5'|:}
} pR$(V4>
} D`T;j[SsS#
} 6N#hN)/
} U?#wWbE1
P9/ (f$ =
堆排序: |Y>Jf~SN
u#,8bw?1
package org.rut.util.algorithm.support; fZ$b8
{4D`VfX_
import org.rut.util.algorithm.SortUtil; SXk.7bMV6
;cXw;$&D
/** Bn7uKa{P
* @author treeroot J?9jD:x
* @since 2006-2-2 XVqOiv)
* @version 1.0 :~otzI4%!
*/ LqbI/AQ)
public class HeapSort implements SortUtil.Sort{ vkIIuNdDlx
&"^F;z/
/* (non-Javadoc) Ca|egQv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E+aePo U
*/ S"cTi[9
public void sort(int[] data) { m\56BP-AM
MaxHeap h=new MaxHeap(); 5dePpF D5
h.init(data); ~w?02FU
for(int i=0;i h.remove(); VBX)xQazU
System.arraycopy(h.queue,1,data,0,data.length); 0~bUW V
} Wef%f]u
C|V7ZL>W
private static class MaxHeap{ ;Z]Wj9iY
ij
?7MP
void init(int[] data){ 'XK 'T\m
this.queue=new int[data.length+1]; g&s.
0+
for(int i=0;i queue[++size]=data; N1$u@P{
fixUp(size); ,^:{!?v
} n93q8U6m/U
} ?{ N,&d
IrMHAM5K
private int size=0; >Uw:cq
)0VL$A
private int[] queue; 'z ?Hv
x4WCAqi/2
public int get() { cUY-
return queue[1]; iFd
!ED
} n 9B5D:.G
fpR|+`k
public void remove() { PVI Oe}N
SortUtil.swap(queue,1,size--); /65YHXg,
fixDown(1); <T}^:2G|
} .9bi%=hP
file://fixdown Y4rxnXGw
private void fixDown(int k) { vGkemJ^/
int j; w:5?ofC
while ((j = k << 1) <= size) { aJ'Fn
if (j < size %26amp;%26amp; queue[j] j++; 32wtN8kx
if (queue[k]>queue[j]) file://不用交换 #AJW-+1g.=
break; =I# pXL
SortUtil.swap(queue,j,k); YnEyL2SuU
k = j; NiZfaC6V
} RlOy,/-<
} 2:38CdkYp
private void fixUp(int k) { '(.5!7?Qc
while (k > 1) { h.edb6
int j = k >> 1; 0V:H/qu8>
if (queue[j]>queue[k]) |'h(S|
break; L/i'6(="
SortUtil.swap(queue,j,k); z@,pT"rb
k = j; 1}d
F,e
}
7kLurv
} )ros-dp`
Nx 42k|8
} g88k@<Y
jZA1fV
} tm~9XFQ<
0>28o.
SortUtil: 0Y8gUpe3P6
$gl|^c\
package org.rut.util.algorithm; zG9FO/@av
cXq9k!I%
import org.rut.util.algorithm.support.BubbleSort; L^JU{\C
import org.rut.util.algorithm.support.HeapSort; 0z>IYw|UB
import org.rut.util.algorithm.support.ImprovedMergeSort; `=(<!nXJx
import org.rut.util.algorithm.support.ImprovedQuickSort; C
m:AU;
import org.rut.util.algorithm.support.InsertSort; bBi>BP=
import org.rut.util.algorithm.support.MergeSort; %p 6Ms
import org.rut.util.algorithm.support.QuickSort; }b4 56J
import org.rut.util.algorithm.support.SelectionSort; %3`*)cp@
import org.rut.util.algorithm.support.ShellSort; t/[2{'R4
k8s)PN
/** Cog }a
* @author treeroot o<nM-"yWb
* @since 2006-2-2 o@)Fy51DD
* @version 1.0 Ue}1(2.v
*/ 1S?~c25=h
public class SortUtil { QRju9x
public final static int INSERT = 1; `y>m
>j
public final static int BUBBLE = 2; u`XRgtI{g?
public final static int SELECTION = 3; 5iw\F!op:
public final static int SHELL = 4; ;>PHkJQ
public final static int QUICK = 5; ntIR #fB
public final static int IMPROVED_QUICK = 6; /dCsZA
public final static int MERGE = 7; ~cm4e>o
public final static int IMPROVED_MERGE = 8; F$UL.`X
_/
public final static int HEAP = 9; nvR%Ub x
WO>,=^zPJ
public static void sort(int[] data) { gt8dFcm|s
sort(data, IMPROVED_QUICK); f#l9rV"@g
} ^&;,n.X5Z
private static String[] name={ [A~?V.G
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #._JB-,'
}; _WS8I>
q]4h#?.-1v
private static Sort[] impl=new Sort[]{ n.l#(`($4
new InsertSort(), Uh.swBC n
new BubbleSort(), Qb
{[xmc
new SelectionSort(), G8}owszT
new ShellSort(), - +a,Ej
new QuickSort(), iQO4IT
new ImprovedQuickSort(), "~VKUvDu
new MergeSort(), T={!/y+
new ImprovedMergeSort(), Tgpu 9V6
new HeapSort() >~,~X9
}; AJ\gDjj<
Y2VfJ}%Q
public static String toString(int algorithm){ Tf#Op
v)
return name[algorithm-1]; ./I? |ih
} u0W6u} 4;
#H6YI3
`G
public static void sort(int[] data, int algorithm) { )xVf3l
pQ
impl[algorithm-1].sort(data); lW"0fZ_x'E
} ~C{:G;Iy0
VP!4Nob
public static interface Sort { ,#XXwm ^I
public void sort(int[] data); >$ZhhM/} J
} Tv#d>ZSD
ZY<RNwu
public static void swap(int[] data, int i, int j) { jTS8
qu
int temp = data; k;cIEEdZD
data = data[j]; iY>P7Uvvz
data[j] = temp; >)D=PvGlmp
} ?$`kT..j,u
} \dQc!)&C9