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。 `9+EhP$RS
插入排序: IO#W#wW$M
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package org.rut.util.algorithm.support; 6`C27
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import org.rut.util.algorithm.SortUtil; DX";v
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/** zEW:Xe)
* @author treeroot fq|2E&&v
* @since 2006-2-2 _&/Zab5
* @version 1.0
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*/ @nP}q!y
public class InsertSort implements SortUtil.Sort{ {Y[D!W2y
1aE/_
/* (non-Javadoc) q UnFEg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) arP+(1U
*/ ej;taKzj
public void sort(int[] data) { pJz8e&wyLM
int temp; zmFFBf"<
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o0'av+e7
} \bOjb\ w$
} fhmr*E'J
} j,xPN=+hT
}gW/heUE
} w8
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FW DuH`-5
冒泡排序: O+?zn:
kPH^X}O$
package org.rut.util.algorithm.support; {*<C!Qg
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import org.rut.util.algorithm.SortUtil; 1Ol]^'y7)
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/** LrMFzd}_O
* @author treeroot -y?Z}5-rs
* @since 2006-2-2 h'~-K`
* @version 1.0 !yX<v%>_0
*/ >U<nEnB$?
public class BubbleSort implements SortUtil.Sort{ yk<jlVF$j
)VMBo6:+
/* (non-Javadoc) lM,zTNu-z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #sU~fq
*/ u;Eu<jU1
public void sort(int[] data) { prN(V1O
int temp; 8>Z$/1Mh
for(int i=0;i for(int j=data.length-1;j>i;j--){ EcoUpiL%2
if(data[j] SortUtil.swap(data,j,j-1); ^P/D8cXa4
} ?(q*U!=
} rx>Tc#g
} 4i/q^;`
} 0>=)
J&:W4\ m
} $
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选择排序: ]B3FTqR{i
wLSZL
package org.rut.util.algorithm.support; x{>Y$t]
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import org.rut.util.algorithm.SortUtil; &&1Y"dFs
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/** m5w9l"U]H
* @author treeroot 9K46>_TyH
* @since 2006-2-2 (Dm"e`
* @version 1.0 ^70 .g?(f[
*/ I`W-RWZ
public class SelectionSort implements SortUtil.Sort { _qt;{,t
Gv,92ny!|
/* ;b?+:L
* (non-Javadoc) 1qj%a%R
* >zg8xA1zL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3B".Gsm)X
*/ (4ci=*3=
public void sort(int[] data) { CY3 \:D0I
int temp; 8[1DO1*P
for (int i = 0; i < data.length; i++) { NB5L{Gf6-
int lowIndex = i; |M<.O~|D6}
for (int j = data.length - 1; j > i; j--) { h:jI
if (data[j] < data[lowIndex]) { ZqbM%(=z(`
lowIndex = j; M.:@<S
} `s83rhs`!
} l8xd73D)8
SortUtil.swap(data,i,lowIndex); +<\cd9
} Da8$Is;n
} @@/'b'
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} $qtU
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Shell排序: O\?5#.
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package org.rut.util.algorithm.support; ;}eEG{`Y
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import org.rut.util.algorithm.SortUtil; 3]`qnSYBv
~I\r1Wj;
/** %*5g<5
* @author treeroot _"!{7e`Z
* @since 2006-2-2 |t 65#1
* @version 1.0 Gj7QGIKx
*/ =*:[(Py1
public class ShellSort implements SortUtil.Sort{ Iz?Wtm }
s/G5wRl<
/* (non-Javadoc) {`K]sa7`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oa&US_
*/ m>uI\OY{n
public void sort(int[] data) { p#;dLM/EA
for(int i=data.length/2;i>2;i/=2){ iTugvb
for(int j=0;j insertSort(data,j,i); <S8I"8{Mb
} vQBY1-S
} dVVvG]
insertSort(data,0,1); Ife,h
s
} bm tJU3Rm
?mYV\kDt\
/** c(Uj'uLc
* @param data U)`3[fo
* @param j +A'q#~yILa
* @param i Jl}!CE@-
*/ |,a%z-l
private void insertSort(int[] data, int start, int inc) { y13CR2t6
int temp; D)*_{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); qN1e{T8u
} \9>g;qPg}
} #>E3' 5b
} J"D&q
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} b#Fk>j
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快速排序: PK-}Ldj
G {pP}
package org.rut.util.algorithm.support; kol,Qs
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import org.rut.util.algorithm.SortUtil; KM_)7?`
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/** } Jdh^t .
* @author treeroot k5fH;
* @since 2006-2-2 f0cYvL]
* @version 1.0 ui.QYAYaV
*/ ]s*[Lib
public class QuickSort implements SortUtil.Sort{ m0BG9~p|
%/tGkS6
/* (non-Javadoc) U5On-T5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =0PNHO\gl
*/ ^B<PD]
public void sort(int[] data) { }j5R@I6P
quickSort(data,0,data.length-1); /\ ,_P
} f
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private void quickSort(int[] data,int i,int j){ {p#l!P/
int pivotIndex=(i+j)/2; K)9j
je
file://swap taWirqd9
SortUtil.swap(data,pivotIndex,j); 8"?Vcw&
SgCqxFii
int k=partition(data,i-1,j,data[j]); m0%iw1OsH%
SortUtil.swap(data,k,j); /^z/]!JG:V
if((k-i)>1) quickSort(data,i,k-1); w!B,kqTG
if((j-k)>1) quickSort(data,k+1,j); rnMG0
<<7,kfR
} r6oX6.c
/** uGuc._}=
* @param data u
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* @param i 1kvPiV=X>
* @param j dt-Qu},8-
* @return b[{m>Fa+o#
*/ 4hsPbUx9
private int partition(int[] data, int l, int r,int pivot) { Ad}-I%Ie
do{ .^[fG59
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 8CP9DS
SortUtil.swap(data,l,r); 80FCe(U
} ]b0zkoD9<
while(l SortUtil.swap(data,l,r); =RW*
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return l; <t?x 'r?@
} X\b}jo^96
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} @MN}^umx`
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改进后的快速排序: ,-cpsN
J+/}K>2#
package org.rut.util.algorithm.support; 8Z9MD<RLw
~h>rskJ_
import org.rut.util.algorithm.SortUtil; ]/aRc=Gn
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/** ;_?zB NW
* @author treeroot 4cXAT9
* @since 2006-2-2 b[J-ja.
* @version 1.0 Eonq'Re$
*/ %K&+~CJE
public class ImprovedQuickSort implements SortUtil.Sort { %mK3N2N$
8~&F/C*
private static int MAX_STACK_SIZE=4096; l]a^"4L4`o
private static int THRESHOLD=10; lF;ziF
/* (non-Javadoc)
Z #.GI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i#L6UKe:Q
*/ _9Dn\=g
public void sort(int[] data) { .x)>f
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; pTa'.m
int pivot; \b_-mnN"
int pivotIndex,l,r; im_w+h%^
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stack[++top]=0; U=haXx4N
stack[++top]=data.length-1; cwH,l$
,X9hl J
while(top>0){ 07$/]eO%C
int j=stack[top--]; 2k.S[?)
int i=stack[top--]; cOzg/~\1
#W>x\
pivotIndex=(i+j)/2; q*HAIw[<y
pivot=data[pivotIndex]; lEO?kn.:z
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SortUtil.swap(data,pivotIndex,j); p&k0Rx0Q3
6obQ9L c
file://partition ucQezmie
l=i-1; G*)s%2c>h
r=j; zrLhQ3V#>
do{ YYTO,4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (/T+Wpy?
SortUtil.swap(data,l,r); XoDJzrL#
} L/qZ ; {
while(l SortUtil.swap(data,l,r); tpv?`(DDU
SortUtil.swap(data,l,j); oS[W*\7'!
[TRGIGtq
if((l-i)>THRESHOLD){ Nbgp_:{
stack[++top]=i; $se !8s"
stack[++top]=l-1; Y;fuh[#
} Am2*-
if((j-l)>THRESHOLD){ '4af
],
stack[++top]=l+1; }U2[?
stack[++top]=j; &E.OyqGZV
} euRCBzc
/'-:=0a
} ::4"wU3t
file://new InsertSort().sort(data); K&j'c
insertSort(data); z`\#$
} rDpe_varA
/** f?2zLE>u
* @param data mcvDxjk,h
*/ PfVEv *
private void insertSort(int[] data) { ^OHZ767v
int temp; 'jh2**i 34
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zSEr4^Dk4
} 8lMZ
} EwTS!gL
} b2a'KczV
9U!JK3d
} ^bF}_CSE
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归并排序: M#=Y~PU
]MC/t5vC u
package org.rut.util.algorithm.support; 6o$Z0mG
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import org.rut.util.algorithm.SortUtil; "EJ\]S]$X
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/** 8r2XGR
* @author treeroot ,yTN$K%M
* @since 2006-2-2 {;U} :Dx
* @version 1.0 w+Ad$4Pf"
*/ G"}qV%"6"
public class MergeSort implements SortUtil.Sort{ )$MS
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v
/* (non-Javadoc) i:g{{Uuv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OlIT|bzkb
*/ .=?Sz*3
public void sort(int[] data) { t$aVe"uM
int[] temp=new int[data.length]; 6!*K/2:O
mergeSort(data,temp,0,data.length-1); OMl8 a B9
} 0 9tikj1
!$xzAX,
private void mergeSort(int[] data,int[] temp,int l,int r){ LOe4c0C6Ca
int mid=(l+r)/2; ,xYg
if(l==r) return ; 2q12yY f
mergeSort(data,temp,l,mid); @=CLeQG`
mergeSort(data,temp,mid+1,r); $Xf~# uH
for(int i=l;i<=r;i++){ X>2?
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temp=data; 4\v~HFsv
} Z&TD+fT<
int i1=l; i"/ r)>"b
int i2=mid+1; HS7R lU^
for(int cur=l;cur<=r;cur++){ MY&<)|v\
if(i1==mid+1) Mk<m6E$L
data[cur]=temp[i2++]; IT,"8s
else if(i2>r) QDP-E[
data[cur]=temp[i1++]; SzRL}}I
else if(temp[i1] data[cur]=temp[i1++]; 2%bhW,?I
else :g&>D#{
data[cur]=temp[i2++]; GX7VlI[
} eDuX"/kHA
} tAaYL
\~
&.hoCPo$
} JL@F~U9
v<j2L"bj
改进后的归并排序: W^w d
([
6ezcS}:+
package org.rut.util.algorithm.support; ~'(9?81d
yz2(_@R
import org.rut.util.algorithm.SortUtil; Tu==49
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/** E{<?l 7t
* @author treeroot "=FIFf
* @since 2006-2-2 anLbl#UV
* @version 1.0 Q<dba12
*/ *JwFD^<j
public class ImprovedMergeSort implements SortUtil.Sort { cY{I:MA+h@
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private static final int THRESHOLD = 10; [@g ~
" l.!Ed
/* f7.m=lbe
* (non-Javadoc) P7'M],!9w
* '\@WN]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )4PB<[u
*/ |%-YuD
public void sort(int[] data) { Rb?~ Rs\
int[] temp=new int[data.length]; y!F:m=x<
mergeSort(data,temp,0,data.length-1); |l$
u<3
} T=.-Cl1A
g2A"1w<-AH
private void mergeSort(int[] data, int[] temp, int l, int r) { ci;&CHa
int i, j, k; -7&?@M,u
int mid = (l + r) / 2; j+nv=p
if (l == r) (p^S~Ax
return; FbmsN)mv!%
if ((mid - l) >= THRESHOLD) 1PmX."a
mergeSort(data, temp, l, mid); k2pT1QZnt
else :fhB*SYK
insertSort(data, l, mid - l + 1); *aI~W^N3
if ((r - mid) > THRESHOLD) 3XnE y
+
mergeSort(data, temp, mid + 1, r); # 9V'';:
else RTZ:U@
insertSort(data, mid + 1, r - mid); Q~8y4=|#CY
lz-
iCZ
for (i = l; i <= mid; i++) { s88y{o
temp = data; 2g0K76=Co:
} I-TlrW=t
for (j = 1; j <= r - mid; j++) { <vL}l: r
temp[r - j + 1] = data[j + mid]; f*v1J<1#
} *G\=i
A
int a = temp[l]; =Aj"j-r&{
int b = temp[r]; % oR>Uo
for (i = l, j = r, k = l; k <= r; k++) { M= atls
if (a < b) { u"\=^F
data[k] = temp[i++]; Xty#vI
a = temp; |J\,F.{'
} else { G#|Hu;C6"
data[k] = temp[j--]; K0LbZMn,/
b = temp[j]; :4U0I:J#
} 2?*||c==*
} vsc&Ju%k
} }{A?PHV5
j"i#R1T
/** \x(.d.l/
* @param data UP?D@ogl<
* @param l j6HR&vIM
* @param i xuF5/(__
*/ g[AA,@p+
private void insertSort(int[] data, int start, int len) { j!7Qw 8
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ZRPE-l_3:
} my4\mi6P
} %/Bvy*X&
} 0lBat_<8
} ldYeX+J
_
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堆排序: an. `dBm
oCbpK
package org.rut.util.algorithm.support; B 2Qp}
e+l\\9v
import org.rut.util.algorithm.SortUtil; !:d L~n
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j
/** _!%M%
* @author treeroot (U _wp's
* @since 2006-2-2 qv$!\ T
* @version 1.0 H }B2A"
*/ Jl_~_Z
public class HeapSort implements SortUtil.Sort{ r,Ds[s)B
7pP+5&*
/* (non-Javadoc) 95[wM6?J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bb}?h]a
*/ IqNpLh|[
public void sort(int[] data) { h07eEg
MaxHeap h=new MaxHeap(); /7x\;&bc
h.init(data); HgaZbb>'
for(int i=0;i h.remove(); ^j [Ku
System.arraycopy(h.queue,1,data,0,data.length); X5 j=C]
} ifvU"l
GZ"&L?ti
private static class MaxHeap{ x^X$M$o,l
mbGcDG[HQ
void init(int[] data){ *Wso3 6an
this.queue=new int[data.length+1]; p&\K9hfi
for(int i=0;i queue[++size]=data; XddHP;x
fixUp(size); K0oFPDJN
} qF'~F`6
} Fe5jdV<
\q,s?`+B
private int size=0; @0D![oA
TW2Z=ks=
private int[] queue; x2@,9OUx
$
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public int get() { SHwRX?
B|
return queue[1]; yjFe'
} WcU@~05b
O k*Z
public void remove() { >T QZk4$
SortUtil.swap(queue,1,size--); {\L|s5=yr
fixDown(1); @C=M
UT-!
} #52NsVaT@
file://fixdown |by@ :@*y
private void fixDown(int k) { /p 5=i
int j; vf N#NY6
while ((j = k << 1) <= size) { &wb9_?ir-
if (j < size %26amp;%26amp; queue[j] j++; !)nD xM`p
if (queue[k]>queue[j]) file://不用交换 I-bF{
break; Yg&`
U^7]B
SortUtil.swap(queue,j,k); rnH}#u+
k = j; rH.gF43O:
} 6rT4iC3Q{
} _Z.cMYN
private void fixUp(int k) { {-h, ZdH^
while (k > 1) { m:3J!1
int j = k >> 1; Z7KXWu+6`m
if (queue[j]>queue[k]) .jargvAL*
break; {>h97}P
SortUtil.swap(queue,j,k); B4^`Sw
k = j; 79wLT\&
} U!0E_J
} kW+G1|
,VWGq@o%
} lJ&y&N<O
O|7yP30?M
} R6<4"?*r
Cg3ODfe
SortUtil: H-2_j
9n 6fXOC
package org.rut.util.algorithm; 3q?5OL^$
`kPc!I7Y
import org.rut.util.algorithm.support.BubbleSort; ;`X~ k|7K
import org.rut.util.algorithm.support.HeapSort; YZ**;"<G
import org.rut.util.algorithm.support.ImprovedMergeSort; u7#z^r
import org.rut.util.algorithm.support.ImprovedQuickSort; 3~<}bee5|q
import org.rut.util.algorithm.support.InsertSort; i.M2E$b|
import org.rut.util.algorithm.support.MergeSort; G0/>8_Q>Nr
import org.rut.util.algorithm.support.QuickSort; f?maa5S
import org.rut.util.algorithm.support.SelectionSort; ^j=bObaX
import org.rut.util.algorithm.support.ShellSort; ${>DhfF
Sr"/-
/** fI]b zv;
* @author treeroot mW +tV1XjG
* @since 2006-2-2 .8(%4ejJ(
* @version 1.0 ;UpJ=?W
*/ :Eo8v$W\RB
public class SortUtil { vI|As+`$d
public final static int INSERT = 1; ESv:1o`?n
public final static int BUBBLE = 2; L/fRF"V
public final static int SELECTION = 3; VaJfD1zd1
public final static int SHELL = 4; Onw24&
public final static int QUICK = 5; c{VJ2NQ+
public final static int IMPROVED_QUICK = 6; N5!&~~
public final static int MERGE = 7; )$_,?*fq:
public final static int IMPROVED_MERGE = 8; )*D'csGc
public final static int HEAP = 9; ]
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lkwh'@s.
public static void sort(int[] data) { {g_@Tuu
sort(data, IMPROVED_QUICK); .`J:xL%Z
} Gkmsaf>
private static String[] name={ "lrA%~3%[P
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N,|r1u 9X#
}; A?,A(-0C
$:;%bjSI
private static Sort[] impl=new Sort[]{ wDw<KU1UK
new InsertSort(), IT&i,`cJ~F
new BubbleSort(), no|Gq>Xp
new SelectionSort(), TY6
rwU
new ShellSort(), +NR n0
z(
new QuickSort(), * <q4S(l
new ImprovedQuickSort(), ]|
WA#8_|
new MergeSort(), ]EN&S Wh
new ImprovedMergeSort(), $20s]ywS
new HeapSort() ~-<:+9m
}; EY$?^iS
DY.58IHg1
public static String toString(int algorithm){ s#P:6]Ar
return name[algorithm-1]; sUciFAb
} 'hIU_
tT-=hDw
public static void sort(int[] data, int algorithm) { L[]BzsIv
impl[algorithm-1].sort(data); -_|]N/v\
} zo44^=~%
hVf^
public static interface Sort { ERC<Dd0
public void sort(int[] data); )E-E0Hl>7
} YxyG\J\|,
ANb"oX c
public static void swap(int[] data, int i, int j) { N9`97;.X
int temp = data; a.,i.2
data = data[j]; G=cNzr9
data[j] = temp; OoM_q/oI
} c[:Wf<%|
} t:T?7-XIE