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。
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插入排序: H4t)+(:D'
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package org.rut.util.algorithm.support; aX|g S\zx
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import org.rut.util.algorithm.SortUtil; !X-9Ms}(d
/** j(j#0dXLh
* @author treeroot [w!C*_V 9
* @since 2006-2-2 G\R*#4cF
* @version 1.0 T/ik/lFI
*/ w&%9IJ
public class InsertSort implements SortUtil.Sort{ sa*g
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/* (non-Javadoc) axX{6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u t$c)_
*/ j !`B'{cH
public void sort(int[] data) { xA92C
int temp; H( vx/q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /0(%(2jIWl
} *ot>WVB
} FH.f- ZU
} 1I ""X]I_
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} 2`EVdl7B]
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冒泡排序: \wYc1M@7V
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package org.rut.util.algorithm.support; "Ht'{ &
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import org.rut.util.algorithm.SortUtil; 5$kdgFq(
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/** :_v!#H)
* @author treeroot @OzMiN
* @since 2006-2-2 Hfh!l2P
* @version 1.0 fN@{y+6
*/ [
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public class BubbleSort implements SortUtil.Sort{ >%u@R3PH]
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/* (non-Javadoc) #.H}r6jqs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X3<K 1/<
*/ P;73Hr[E#
public void sort(int[] data) { h$>wv`
int temp; PQ$sOK|/
for(int i=0;i for(int j=data.length-1;j>i;j--){ Nar>FR7ut
if(data[j] SortUtil.swap(data,j,j-1); lbTV$A
} 7tRi"\[5
} <YH=3[
} HJIC<U
} \|.7-X
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} QOH<]~3J
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选择排序: X3',vey
A|L'ih/
package org.rut.util.algorithm.support; iPvuz7j=h
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import org.rut.util.algorithm.SortUtil; f"dSr
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/** d1c0l{JV3
* @author treeroot :S -";.:"
* @since 2006-2-2 DN_W.o
* @version 1.0 RO.U(T
*/ <F(><Xw,-4
public class SelectionSort implements SortUtil.Sort { ! \sMR
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/* ^`XCT
* (non-Javadoc) 19W:-Om
* lq>AGw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y1)!lTG
*/ t0Mx!p'T
public void sort(int[] data) { wP<07t[-g
int temp; z=g$Exl
for (int i = 0; i < data.length; i++) { pvF-Y9Xb
int lowIndex = i; W3GNA""O
for (int j = data.length - 1; j > i; j--) { VL\t>n
if (data[j] < data[lowIndex]) { q9]IIv
lowIndex = j; /&^W#U$4
} wMWW=$h#\
} d|lpec
SortUtil.swap(data,i,lowIndex); T.ML$"f
}
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} A%XX5*
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} F9a^ED0l\
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Shell排序: X!>eiYK)
S\*`lJzPM
package org.rut.util.algorithm.support; E=$p^s
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import org.rut.util.algorithm.SortUtil; x`%JI=q
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/** -1u9t4+`
* @author treeroot .4-,_`T?
* @since 2006-2-2 n}?wVfEy
* @version 1.0 \)/yC74r7(
*/ !5Sd2<N
public class ShellSort implements SortUtil.Sort{ y >+mc7n
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/* (non-Javadoc) ;+/o?:AH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nd@~>&F
*/ Ef)yQ
public void sort(int[] data) { *F`A S>
for(int i=data.length/2;i>2;i/=2){ "@/62b
for(int j=0;j insertSort(data,j,i); -LW[7s$
} g[[;w*;z
} Ii&7rdoxe
insertSort(data,0,1); t:)ERT")
} e<cM[6H'D
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/** :O= \<t
* @param data wW>fVPr
* @param j 1:M@&1LYp
* @param i 2%u;$pj
*/ V[nQQxWp=
private void insertSort(int[] data, int start, int inc) { i+{yMol1
int temp; n6<V+G)T
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); SUM4Di7
} #oni:] E!m
} {Ui=b+
} T~:|!`
4\M.6])_
} EYX$pz(x;
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快速排序: p-SJ6Gg
9
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package org.rut.util.algorithm.support; alq%H}FF
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import org.rut.util.algorithm.SortUtil; tmUFT
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/** BV#78,8(
* @author treeroot [*:6oo98'
* @since 2006-2-2 Pr ]Ka
* @version 1.0 U}k9 Py
*/ E&$yuW^z
public class QuickSort implements SortUtil.Sort{ Yz$3;
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/* (non-Javadoc) u8GMUN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kOo~%kcQ'
*/ `n5"0QRd
public void sort(int[] data) { @&|l^ 1
quickSort(data,0,data.length-1); *+)AqKP\Kv
} XolZonJr
private void quickSort(int[] data,int i,int j){ d;mx<i=/
int pivotIndex=(i+j)/2; A][fLlpr
file://swap ?';OD3-
SortUtil.swap(data,pivotIndex,j); )Gw~XtB2
mtz#}qD66
int k=partition(data,i-1,j,data[j]); $-}e; V Zb
SortUtil.swap(data,k,j); *^%Q0mU[
if((k-i)>1) quickSort(data,i,k-1); I/gjenUK
if((j-k)>1) quickSort(data,k+1,j);
-!W<DJ*
9}a_:hAy/
} O3DmNq$dz
/** a2Pf/D]n
* @param data ,JU@|`
* @param i G)v
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* @param j L@`ouQ"sa
* @return 10!wqyj&
*/ +5VLw
private int partition(int[] data, int l, int r,int pivot) { *}k;L74|
do{ ^sN (
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U8qtwA9t
SortUtil.swap(data,l,r); LI2&&Mw
} JM1R ;i6
while(l SortUtil.swap(data,l,r); M])dJ9&e
return l; ;{h CF
} +6wiOHB`
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} $`R6=\|
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改进后的快速排序: NT@;N /I
D?XM,l+
package org.rut.util.algorithm.support; JRo?s~Ih
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import org.rut.util.algorithm.SortUtil; ;4N;D
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/** M9zfT!-
* @author treeroot {pM?5"MMJ
* @since 2006-2-2 hW!)w
* @version 1.0 q[`j`8YY!R
*/ b&1`NO
public class ImprovedQuickSort implements SortUtil.Sort { y6]vl=^L
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private static int MAX_STACK_SIZE=4096; b#7{{@H
private static int THRESHOLD=10; jck}" N
/* (non-Javadoc) ys 5&PZg*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vz6Qxd{m3
*/ aaD;jxT&M|
public void sort(int[] data) { UG=K|OXWJ
int[] stack=new int[MAX_STACK_SIZE]; "Ph^BUAb
Sb~MQ_
int top=-1; #>Zzf
int pivot; ;2B{ 9{
int pivotIndex,l,r; @E:,lA
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stack[++top]=0; E@7J:|.)R
stack[++top]=data.length-1; ,#pXpAz/
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while(top>0){ ^Q+g({
int j=stack[top--]; qucq,Yw
int i=stack[top--]; x c{hC4^V
x?&$ ci
pivotIndex=(i+j)/2; ,}K<*t[I
pivot=data[pivotIndex]; [jmd
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SortUtil.swap(data,pivotIndex,j); O)vp~@|
lRXK\xIP ,
file://partition zc[Si bT
l=i-1; )"pF R4
r=j; uu`G 2[t
do{ S~|T4q(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @')[FEdW
SortUtil.swap(data,l,r); 9-MUX^?u
} 7hsGu a
while(l SortUtil.swap(data,l,r); jy'13G/b\
SortUtil.swap(data,l,j); z[Xd%mhjO
KZ/=IP=
if((l-i)>THRESHOLD){ K'GBMnjD
stack[++top]=i; /~3r;M
stack[++top]=l-1; H)n9O/u
} aA,!<^&}
if((j-l)>THRESHOLD){ K.0:C`C
stack[++top]=l+1; Hw4%uS==V
stack[++top]=j; 1YH+d0UGn
} MG.`
r{5
w!D|]LoE
} 55z]&5N
file://new InsertSort().sort(data); 9Q"'"b*?z
insertSort(data); >3Eo@J,?d
} I"GB<oB
/** EVGt 5z
* @param data {E@Lft-
*/ AB4(+S*LA
private void insertSort(int[] data) { :8OZ#D_Hl
int temp; M]J^N#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O&Y*pOg
} pej|!oX
} MjU6/pO}L
} *6>.!&
#?S^kM-0
} 6ZP"p<xX
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归并排序: `G}TG(
(=om,g}
package org.rut.util.algorithm.support; _WRFsDZ'
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import org.rut.util.algorithm.SortUtil; x U4 +|d
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/** I "A_b}~*}
* @author treeroot /#)/;
* @since 2006-2-2 xsD($_
* @version 1.0 j-lfMEa$o
*/ %4gg@Z9
public class MergeSort implements SortUtil.Sort{ ;'cN<x)%|
VcXq?f>\
/* (non-Javadoc) ()6wvu}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >7QvK3S4%
*/ =Lf,?"S
public void sort(int[] data) { ^y<<>Y'I
int[] temp=new int[data.length]; xjKR R?
mergeSort(data,temp,0,data.length-1); GU( _
} `)_dS&_\
r2,.abo
private void mergeSort(int[] data,int[] temp,int l,int r){ N(Fp0
int mid=(l+r)/2; Tu).K.p:
if(l==r) return ; 'ZDp5pCC;
mergeSort(data,temp,l,mid); oY933i@l)P
mergeSort(data,temp,mid+1,r); v]B3m
for(int i=l;i<=r;i++){ G?Q3/y(
temp=data; N/MUwx;P
} 8; 0A
g
int i1=l; aWR}R>E
int i2=mid+1; (KDD e}f
for(int cur=l;cur<=r;cur++){ J1C3&t}
if(i1==mid+1) gaZu;t2u
data[cur]=temp[i2++]; -;^j:L{
else if(i2>r) n$$SNWgM
data[cur]=temp[i1++]; tp6 3@L|Q
else if(temp[i1] data[cur]=temp[i1++]; n(;|q&3
else tFp Ygff<
data[cur]=temp[i2++]; s~5[![1
K
} x-^`~p
} z=q3Zo
K/IWH[
} ]&lY%"U$i
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改进后的归并排序: )b)-ZS7
xc=b
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package org.rut.util.algorithm.support; ^")Q YE
lh7jux
import org.rut.util.algorithm.SortUtil; Nn!+,;ut
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/** old(i:2
* @author treeroot : y%d
* @since 2006-2-2 g/CSGIIT
* @version 1.0 r]:(Vk]|F
*/ {zQ8)$CQ
public class ImprovedMergeSort implements SortUtil.Sort { ChGYTn`X
au:
fw
private static final int THRESHOLD = 10; /_I]H
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/* 5Co
* (non-Javadoc) F8jd'OR
* L^@'q6*}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oX30VfT
*/ 5z7U1:
public void sort(int[] data) { gOSJM1Mr3
int[] temp=new int[data.length]; ME46V6[LX]
mergeSort(data,temp,0,data.length-1); =P't(<
} Q(wx nm
d3ZdB4L
private void mergeSort(int[] data, int[] temp, int l, int r) { 6dabU*
int i, j, k; J8uLJ
int mid = (l + r) / 2; J??-j
if (l == r) g
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return; 1OCeN%4]Qk
if ((mid - l) >= THRESHOLD)
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mergeSort(data, temp, l, mid); ^o3"#r{:+
else Ve}(s?hU5
insertSort(data, l, mid - l + 1); _(%d(E2?
if ((r - mid) > THRESHOLD) <D<4BnZ(
mergeSort(data, temp, mid + 1, r); [ 9 {*94M
else I,>-t GK
insertSort(data, mid + 1, r - mid); e:fy#,HEj{
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for (i = l; i <= mid; i++) { 8m2Tk\;:
temp = data; *|%@6I(
} de.&`lPRf
for (j = 1; j <= r - mid; j++) { Dz>^IMsY
temp[r - j + 1] = data[j + mid]; )h"<\%LU
} 8!O5quEc
int a = temp[l]; uwzvb gup?
int b = temp[r]; [$0p+1
for (i = l, j = r, k = l; k <= r; k++) { l=S 35og
if (a < b) { e6@=wnoX u
data[k] = temp[i++]; re/@D@%
a = temp; { C=NUK%?
} else { ]
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data[k] = temp[j--]; BLfTsNzmt
b = temp[j]; *scVJ
} JD)(oK%C
} <*16(!k0
} tItX y
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/** nw -xSS{
* @param data gw#5jW\
* @param l XewVcRo
* @param i 27
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*/ TSTl+W
private void insertSort(int[] data, int start, int len) { ]zj9A]i:a
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); R "n5
} ^U
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} Ixb=L(V
} 2|3)S`WZl
} RQ vft
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堆排序: "+kL)]
fkuLj%R
package org.rut.util.algorithm.support; ii[F]sR\
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import org.rut.util.algorithm.SortUtil; =
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/** HG^B#yX
* @author treeroot Isvx7$Vu+
* @since 2006-2-2 6h|q'.Y
* @version 1.0 z.7cy@N6
*/ f[<m<I
public class HeapSort implements SortUtil.Sort{ \Jx04[=
K&vF0*gN3
/* (non-Javadoc) aZ2!i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]NUl9t*N4
*/ JlH&??
public void sort(int[] data) { K(q+
"
MaxHeap h=new MaxHeap(); ]$ L|
h.init(data); 'n{Nvt.c
for(int i=0;i h.remove(); +c(zo4nZ
System.arraycopy(h.queue,1,data,0,data.length); ^T*? >%`
} iq8GrdL"
vI:;A/&
private static class MaxHeap{ AqWUwK9T
v*'^r)Q[p
void init(int[] data){ LxYrl-
this.queue=new int[data.length+1]; UJD 0K]s
for(int i=0;i queue[++size]=data; o)Iff)m$
fixUp(size); $;1#To
} 3,p]/Z_
} +MR.>"
8$")%_1]
private int size=0; 9!6f-K
j/R[<47
private int[] queue; Ja,wfRq
s3~lT.
public int get() { &M46&^Jho
return queue[1]; kStnb?nk
} 5Sm}nH
a][f
public void remove() { G9Y#kBr
SortUtil.swap(queue,1,size--); .X@FXx&
fixDown(1); )Ub_@)X3%l
} ^A!Qc=#z}
file://fixdown ;T"zV{;7BR
private void fixDown(int k) { HBy[FYa4
int j; 1,6}_MA
while ((j = k << 1) <= size) { @Ws*Q TlV
if (j < size %26amp;%26amp; queue[j] j++; n,jKmA
if (queue[k]>queue[j]) file://不用交换 hlV=qfc
break; igkYX!0#8O
SortUtil.swap(queue,j,k); 1Yq?X:
k = j; 8B/\U'
} s8ywKTR-
} LgKaPg$
private void fixUp(int k) { _Tf4WFu2
while (k > 1) { CLRiJ*U
int j = k >> 1; ZIf
if (queue[j]>queue[k]) 5*j?E
break; /I1h2E
SortUtil.swap(queue,j,k); 0rOfrTNOz%
k = j; )k\H@Dy%$
} +1uF !G&l
} KV}FZ3jY
qs1 ?IYD
} 4A8;tU$&
G'oG</A
} ~ DBcIy?
\SN&G`o<
SortUtil: ZjgsR|i
]Y%Vio
package org.rut.util.algorithm; 9`1O"R/
.LZwuJ^;
import org.rut.util.algorithm.support.BubbleSort; ).Fpgxs
import org.rut.util.algorithm.support.HeapSort; ySx>LuY#3
import org.rut.util.algorithm.support.ImprovedMergeSort; 8VeQ-#7M/
import org.rut.util.algorithm.support.ImprovedQuickSort; isQ[ Gc!8
import org.rut.util.algorithm.support.InsertSort; !B\R''J5
import org.rut.util.algorithm.support.MergeSort; ,VCyG:dw
import org.rut.util.algorithm.support.QuickSort; W{5#@_pL
import org.rut.util.algorithm.support.SelectionSort; {1IfU
import org.rut.util.algorithm.support.ShellSort; ZX>AE3wk
S4'
/** T;L>;E>B
* @author treeroot (MR_^t
* @since 2006-2-2 zfc'=ODX
* @version 1.0 SW*"\X;
*/ H| 8Qp*
public class SortUtil { >d,jKlh^.%
public final static int INSERT = 1; v16JgycM
public final static int BUBBLE = 2; n2]/v{E;/
public final static int SELECTION = 3; hM;lp1l
public final static int SHELL = 4; ->l%TCHP
public final static int QUICK = 5; R$q;
!
public final static int IMPROVED_QUICK = 6; X#*JWQO=
public final static int MERGE = 7; qT%FmX
public final static int IMPROVED_MERGE = 8; I$<<(VWH
public final static int HEAP = 9; ;g @4|Ro
T?x[C4wf+
public static void sort(int[] data) { 8dO!
sort(data, IMPROVED_QUICK); =-8bsV/l
} ;LG#.~f
private static String[] name={ *QwY]j%^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^5H >pat
}; <g1hxfKx5
i>D.!x
private static Sort[] impl=new Sort[]{ qyF{f8pzq
new InsertSort(), luo
new BubbleSort(), '^No)n\`
new SelectionSort(), O_ChxX0KP
new ShellSort(), QWD'!)Zb
new QuickSort(), xD5:RE~g
new ImprovedQuickSort(), j/fzzI0@
new MergeSort(), f|B=_p80
new ImprovedMergeSort(), :+qF8t[L
new HeapSort() ;nodjbr,j
}; y0#u9t"Z;
}
ud0&Oe{
public static String toString(int algorithm){ kMb}1J0i"
return name[algorithm-1]; h-G)o[MA
} _CmOd-y
vbb5f #WZ
public static void sort(int[] data, int algorithm) { )2bvQy8K
impl[algorithm-1].sort(data); 4x
} ~R22?g.
J T-J#Ag
public static interface Sort { )/pU.Z/
public void sort(int[] data); DVSL [p?_
} np8gKVD
|C!ox hu<
public static void swap(int[] data, int i, int j) { ^G4Py<s
int temp = data; y9x w
9l'
data = data[j]; `8AR_7i
data[j] = temp; hp#W9@NR
} 8n'B6hi
} :c8&N-`