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。 D.ajO^[
插入排序: Z1&<-T_
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package org.rut.util.algorithm.support; gf]k@-)
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import org.rut.util.algorithm.SortUtil; "QV?C
/** ZD`9Ez)5
* @author treeroot (Y[q2b
* @since 2006-2-2 ;_ TP Jy
* @version 1.0 vIK+18v7
*/ yE3l%<;q
public class InsertSort implements SortUtil.Sort{ av; ~e<
@`D`u16]i
/* (non-Javadoc) 7hq$vI%0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NH$!<ffz
*/ 5@3hb ]J
public void sort(int[] data) { ej^pFo
int temp; k2@|fe
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v;_k*y[VV$
} >'MT]@vez
} )LRso>iOO
} Y`tv"v2
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} aN,.pLe;
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冒泡排序: XW2{I.:in>
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package org.rut.util.algorithm.support; kbR!iPM-;
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import org.rut.util.algorithm.SortUtil; O"c@x:i
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/** Xb'UsQ
* @author treeroot d8V)eZYXy~
* @since 2006-2-2 uY"Bgz:=d
* @version 1.0 aEJds}eE6)
*/ >ow5aOlQ&
public class BubbleSort implements SortUtil.Sort{ K3xs=q]:@
7G 3*@cl
/* (non-Javadoc) y wf@G;
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rO;Vr},3\%
*/ +j">Ju6Q;.
public void sort(int[] data) { ~4t7Q
int temp; 08pG)_L
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?A\[EI^
if(data[j] SortUtil.swap(data,j,j-1); ~a
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} x_eR/B>
} rf[w&~R
} YH
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} _go1gf7
dK^WZQ
} z}sBx9;
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选择排序: 8<w8"B.i
A@HCd&h
package org.rut.util.algorithm.support; ]"DsZI-glW
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import org.rut.util.algorithm.SortUtil; E#I^D/0
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/** c7[+gc5}
* @author treeroot JS:AHJSz
* @since 2006-2-2 X7~AqG
* @version 1.0 _ +?v'#
*/ Qjl.O HO
public class SelectionSort implements SortUtil.Sort { due'c!wW
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/* aIsT"6A~{
* (non-Javadoc) D)my@W0,
* D3MRRv#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }0(.HMiGj
*/ h,u?3}Knnb
public void sort(int[] data) { 0**.:K<i
int temp; \A'tV/YAd
for (int i = 0; i < data.length; i++) { D$OUy}[2`.
int lowIndex = i; lgL|[ik`
for (int j = data.length - 1; j > i; j--) { n\x@~ SzrX
if (data[j] < data[lowIndex]) { JF%_8Ye5
lowIndex = j; tI-u@
g
} l^,"^vz
} ^vQ,t*Uj=
SortUtil.swap(data,i,lowIndex); }1)tALA
} g/v"E+
} $w@0}5Q
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} hDsSOpj
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Shell排序: I_\#(
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package org.rut.util.algorithm.support; `r$c53|<u
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import org.rut.util.algorithm.SortUtil; cIJqF.k
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/** /O$7A7Tl
* @author treeroot UOwEA9q%
* @since 2006-2-2 E2Jmo5yJR
* @version 1.0 S~+er{,ht4
*/ |[lmW%
public class ShellSort implements SortUtil.Sort{ BA
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/* (non-Javadoc) vXP+*5d/ K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =8!FY"c*
*/ Munal=wL
public void sort(int[] data) { Qv`Lc]'
for(int i=data.length/2;i>2;i/=2){ 1q Jz;\wU
for(int j=0;j insertSort(data,j,i); aGRD`ra
} /eI]!a
} =bwuLno>
insertSort(data,0,1); 8:=EA3
} hfBZ:es+
NUvHY:
/** R3`h$`G
* @param data *=p[;V
* @param j rbEUq.Yk]~
* @param i >Y\$9W=t
*/ j0F'I*Z3
private void insertSort(int[] data, int start, int inc) { P
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int temp; ff3HR+%M
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0:SR29(p1
} (>
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} MkCq$MA
} z|5Sy.H>
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} 2VgDM6h
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快速排序: i7UE9Nyl*
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package org.rut.util.algorithm.support; 6_.K9;Gd
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import org.rut.util.algorithm.SortUtil; cp&- 6 w+
2
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/** UDUj
* @author treeroot 4-wCk=I
* @since 2006-2-2 {}W9m)I
* @version 1.0 U~)i&":sN
*/ Y4 <
public class QuickSort implements SortUtil.Sort{ XC
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`]0E)
/* (non-Javadoc) @0mR_\u\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c2aW4TX2
*/ .-[d6Pnw
public void sort(int[] data) { ha%3%O8Z
quickSort(data,0,data.length-1); mK>c+ u)
} _?+gfi+
private void quickSort(int[] data,int i,int j){ 4 )U,A~!
int pivotIndex=(i+j)/2; 0bt"U=x4
file://swap Y\sSW0ZX
SortUtil.swap(data,pivotIndex,j); Z^ e?V7q
3,QsB<9Is
int k=partition(data,i-1,j,data[j]); 9\aR{e,1
SortUtil.swap(data,k,j); QS*!3?%
if((k-i)>1) quickSort(data,i,k-1); *u|bmt
if((j-k)>1) quickSort(data,k+1,j); _eE hIQ9
z'(][SB
} J!5>8I(_wX
/** 8)1k>=
* @param data (1|_Nr
* @param i xD#r5
* @param j ;ZSJ-r
* @return Y@+e)p{
*/ YXdd=F
private int partition(int[] data, int l, int r,int pivot) { w[A$bqz
do{ `h:$3a:5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J'%
SortUtil.swap(data,l,r); <DM
/"^*
} OjUZ-_J
while(l SortUtil.swap(data,l,r); ')8c
return l; ir-= @@
} Rqk;!N
SS/9fT"[
} )Hp{8c
6^Q Bol
改进后的快速排序: _"Bh
3 7
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package org.rut.util.algorithm.support; I`~ofq?r
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import org.rut.util.algorithm.SortUtil; ^D{!!)O
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/** ) sh+cfTCb
* @author treeroot JIGoF
* @since 2006-2-2 ~Lyy7B9
* @version 1.0 905%5\Y
*/ NJVAvq2E.
public class ImprovedQuickSort implements SortUtil.Sort { 4^KeA".
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private static int MAX_STACK_SIZE=4096; #K5)Rb-H
private static int THRESHOLD=10; }=+J&cR
/* (non-Javadoc) ?3x7_=4t@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "-pQL )f
*/ 4t%g:9]vr
public void sort(int[] data) { g^V4+3v|a'
int[] stack=new int[MAX_STACK_SIZE]; Q1?0R<jOU
k4:e0Wd
int top=-1; 'mH9O
int pivot; h7}D//~p
int pivotIndex,l,r; aBH!K
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stack[++top]=0; }i"\?M
stack[++top]=data.length-1;
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'`/Qr~]
while(top>0){ :#?Z)oQpT
int j=stack[top--]; `<0{U]m
int i=stack[top--]; M[C9P.O%w
E% ?X-$a
pivotIndex=(i+j)/2; @Qlh
pivot=data[pivotIndex]; rYp]RX>
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SortUtil.swap(data,pivotIndex,j); x9,X0JO
x8#bd{
file://partition &L88e\
c+
l=i-1; zNu>25/)(
r=j; 0#gu7n|J
do{ KfSI6
Y_
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,-C%+SC
SortUtil.swap(data,l,r); y@5{.jsr_
} Wsz-#kc\[
while(l SortUtil.swap(data,l,r); 6@"lIKeP
SortUtil.swap(data,l,j); GE2^v_
ypCarvQT
if((l-i)>THRESHOLD){ P)>`^wc$
stack[++top]=i; B.e3IM0
stack[++top]=l-1; 3C+!Y#F
} qqmhh_[T
if((j-l)>THRESHOLD){ G,VTFM6
stack[++top]=l+1; J
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stack[++top]=j; iiWs]5
} !rK,_wH
.4jU G=
} z
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file://new InsertSort().sort(data); Au-_6dT
insertSort(data); @Kx@ 2#~b
} s/;iZiWK
/** lWVvAoe
* @param data X9J&OQ[W
*/ cv .R`)l
private void insertSort(int[] data) { 6AM-^S@
int temp; =B0#z]qu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Gu3# y"a>
} ^
#6Ei9di
} d".Xp4}f
} gPo3jw o$
|#y+iXTJ
} z'FpP
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归并排序: J%Cn
@v#]+9F
package org.rut.util.algorithm.support; Uz;z
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import org.rut.util.algorithm.SortUtil; {Q%"{h']
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/** H=_ Wio
* @author treeroot p41TSALq
* @since 2006-2-2 s.9)?<[
* @version 1.0 O|5Z-r0<
*/ _P^ xX'v
public class MergeSort implements SortUtil.Sort{ ,#NH]T`c1
C78V/{
/* (non-Javadoc) Y(qyuS3h~*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sX8?U,u
*/ 7U@;X~c
public void sort(int[] data) { U_X /
int[] temp=new int[data.length]; w7(jSPB
mergeSort(data,temp,0,data.length-1); 1x"S^j
} I6q]bQ="
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private void mergeSort(int[] data,int[] temp,int l,int r){ "@!B"'xg
int mid=(l+r)/2; LW"p/`#<
if(l==r) return ; Id<3'ky<N
mergeSort(data,temp,l,mid); 'S[&-D%(3
mergeSort(data,temp,mid+1,r); L~WC9xguDl
for(int i=l;i<=r;i++){ a*qf\&Vb|
temp=data; Hn-k*Y/P
} 8hKyp5(%l
int i1=l; 9XH}/FcP_O
int i2=mid+1; 82EH'C
for(int cur=l;cur<=r;cur++){ l]bCt b%_
if(i1==mid+1) shn{]Y
data[cur]=temp[i2++]; @TvoCDeI
else if(i2>r) 8[z<gxP`?
data[cur]=temp[i1++]; K}r@O"6*\
else if(temp[i1] data[cur]=temp[i1++]; |i}5vT78
else _ ?\4k{ET
data[cur]=temp[i2++]; O%>FKU>(?
} R*DQm
} 3U_,4qf
c`F~vrr)X
} *c0\<BI
i uNBw]
改进后的归并排序: tn"n~;Bh?:
Hq>"rrVhx
package org.rut.util.algorithm.support; H.n+CR
}Q=@$YIesD
import org.rut.util.algorithm.SortUtil; 0Rme}&$
uoryxKRjc~
/** ?HsQ417.H
* @author treeroot ]]InD N
* @since 2006-2-2 7AOjlC9R}
* @version 1.0 2I!L+j_
*/
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public class ImprovedMergeSort implements SortUtil.Sort { Qd{h3K^hlu
TB8a#bK4
private static final int THRESHOLD = 10; Q9[$8
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/* tH}$j
* (non-Javadoc) _:ORu Vk
* 5UTIGla
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o:.6{+|N
*/ 7[b]%i
public void sort(int[] data) { -UhSy>m
int[] temp=new int[data.length]; KBb{Z;%
mergeSort(data,temp,0,data.length-1); %+1;iuDL
} _w'N
_(TYR*
private void mergeSort(int[] data, int[] temp, int l, int r) { SviGLv;oR
int i, j, k; #nzVgV]
int mid = (l + r) / 2; <+/:}S4w)
if (l == r) TqZ&X|G
return; DaK2P;WP
if ((mid - l) >= THRESHOLD) PCx] >&
mergeSort(data, temp, l, mid); |, Lp1
else a9w1Z4
insertSort(data, l, mid - l + 1); w<4,;FFlZ/
if ((r - mid) > THRESHOLD) Gx$rk<;ZW
mergeSort(data, temp, mid + 1, r); oD0N<Ln}
else ?eU=xO
insertSort(data, mid + 1, r - mid); gmU0/z3&
Gp PlO]
for (i = l; i <= mid; i++) { {e3XmVAI
temp = data; ]t23qA@^2
} 2&k5X-Y
for (j = 1; j <= r - mid; j++) { ~I_v {
temp[r - j + 1] = data[j + mid]; _i-(`5
} IIrXI8'}
int a = temp[l]; '/h~O@Rw
int b = temp[r]; S>'S4MJE`
for (i = l, j = r, k = l; k <= r; k++) { _kJ?mTk
if (a < b) { p?#cn
data[k] = temp[i++]; fFBD5q(n
a = temp; c'678!r9 P
} else { Za&.sg3RG
data[k] = temp[j--]; us:V\V
b = temp[j]; jW?siQO^
} L'*P;z7<
} l$:.bwXXO
} h
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B!#F!Wk"
/** X`,]@c%C`
* @param data i;yr=S,a0/
* @param l "(U%Vg|)
* @param i !aVwmd'9
*/ l5 FM>q
private void insertSort(int[] data, int start, int len) { Je5UVf3>2&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `!K!+`Z9
} #4iiY6
} #]BpTpRAe<
} c
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} yD0,q%B`}
8" x+^
堆排序: HifU65"8
=36e&z-#
package org.rut.util.algorithm.support; upJ|`,G{
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import org.rut.util.algorithm.SortUtil; /!u#S9_B
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/** v7L}I[f
* @author treeroot K~?M?sa
* @since 2006-2-2 Tt0:rQ.
* @version 1.0 |&>!"27;w
*/ D>YbL0K>X~
public class HeapSort implements SortUtil.Sort{ jMT];%$[
X1P_IB
/* (non-Javadoc) (IrX\Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e>ZF? (a0
*/ h,D6MP
public void sort(int[] data) { E2PMcT{)_
MaxHeap h=new MaxHeap(); rQ4i %.
h.init(data); y[}O(
for(int i=0;i h.remove(); SSS)bv8m
System.arraycopy(h.queue,1,data,0,data.length); Fe4QWB6\U
} >/kwy2
7=o2$
private static class MaxHeap{ 4/Vy@h"A3
hKT ]M[Pv
void init(int[] data){ N'#Lb0`B
this.queue=new int[data.length+1]; CD]2a@j{
for(int i=0;i queue[++size]=data; =h083|y>
fixUp(size); 'pUJlPGx
} 6iozb~!Rr
} BBub'
Qe~2'Hw#9
private int size=0; owA0I'|V-A
{GaQV-t
private int[] queue; $rZ:$d.C
4zF|}aiQ
public int get() { Wgh4DhAW
return queue[1]; lZ3o3"
} <z>K{:+>
.?TPoqs7Z
public void remove() { "dKYJ&$
SortUtil.swap(queue,1,size--); $J~~.PUXQ
fixDown(1); +Oae3VFf;
} >gt_C'
file://fixdown XZcT-w7
private void fixDown(int k) { xr2ew%&o
int j; n&. bs7N2
while ((j = k << 1) <= size) { T4W"!4[
if (j < size %26amp;%26amp; queue[j] j++; 3wS{@'
if (queue[k]>queue[j]) file://不用交换 !
Z e
break; S;o U'KOY
SortUtil.swap(queue,j,k); )$#r6fQO
k = j; dh7PpuN{
} !U,^+"l'GP
} -jZP&8dPH
private void fixUp(int k) { /nK)esB1L
while (k > 1) { bw@DcT&,
int j = k >> 1; qM`XF32A$
if (queue[j]>queue[k]) _{EO9s2FG
break; ez2 gy"
SortUtil.swap(queue,j,k); nP9@yI*7
k = j; (1bz.N8z
} `.# l_-U{
} Oc;/'d2
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} pai>6p
CS 7"mE`{
} s*g yk
z.H*"r
SortUtil: lR!Sdd} -
(%fl
package org.rut.util.algorithm; CfMq?.4%E}
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import org.rut.util.algorithm.support.BubbleSort; _v=@MOI/J
import org.rut.util.algorithm.support.HeapSort; ]Q\Ogfjp
import org.rut.util.algorithm.support.ImprovedMergeSort; D_6GzgZ
import org.rut.util.algorithm.support.ImprovedQuickSort; :x*8*@kC
import org.rut.util.algorithm.support.InsertSort; Co2* -[R
import org.rut.util.algorithm.support.MergeSort;
n2bL-
import org.rut.util.algorithm.support.QuickSort; mm3goIi;Y
import org.rut.util.algorithm.support.SelectionSort; n6gYZd
import org.rut.util.algorithm.support.ShellSort; S7Xr~5>X
J&{qe@^
/** vqLC?{i+
* @author treeroot d[.kGytUt
* @since 2006-2-2 2`#jw)dM;}
* @version 1.0 $'f<4
*/ bQ-5uFe~$B
public class SortUtil { }b9#.H9
public final static int INSERT = 1; YyX/:1 sg>
public final static int BUBBLE = 2; %h**L'~``
public final static int SELECTION = 3; H|='|k5Y.
public final static int SHELL = 4; 28[dTsd%
public final static int QUICK = 5; 29"eu#-Qj
public final static int IMPROVED_QUICK = 6; 6 ^X$;
public final static int MERGE = 7; khl(9R4a
public final static int IMPROVED_MERGE = 8; /Yk2 |L
public final static int HEAP = 9; Kp*nOZ
(o_fY.
public static void sort(int[] data) { %/dYSC
sort(data, IMPROVED_QUICK); P'#m1ntxQ
} fGiN`j}j
private static String[] name={ K!?T7/@
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }DTpl?l
}; 0(s0<9s%
d\`A
^
private static Sort[] impl=new Sort[]{ 0lNVQxG
new InsertSort(), 7z
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new BubbleSort(), #&.&Uu$
new SelectionSort(), d:0RDK-}s
new ShellSort(), AElx #`T
new QuickSort(), [L1pDICoy
new ImprovedQuickSort(), >n@?F[ Y
new MergeSort(), oK h#th
new ImprovedMergeSort(), 7?K?-Oj
new HeapSort() 5y!
4ny_
}; \4wM8j
sk~rjH]-g$
public static String toString(int algorithm){ l=5(5\
return name[algorithm-1]; m?-3j65z
} 05:`(vl
A~Eu_m
public static void sort(int[] data, int algorithm) { c/ wzV
impl[algorithm-1].sort(data); >Dpz0v
} A)En25,X
>_U)=q
public static interface Sort { GzK{.xf
public void sort(int[] data); PY:
l
} "U34D1I)#
}N5>^y
public static void swap(int[] data, int i, int j) { 4NL TtK
int temp = data; "G P!]3t
data = data[j]; irCS}Dbw
data[j] = temp; euM7>
$`
} m~~_iz_*
} XOO!jnQu