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: $`8wJf9@w
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package org.rut.util.algorithm.support; AbM'3Mkz
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import org.rut.util.algorithm.SortUtil; ~W/z96'
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/** *-X[u:
* @author treeroot c71y'hnT
* @since 2006-2-2 ckn(`I
* @version 1.0 DY*N|OnqJ
*/ L~3Pm%{@A
public class InsertSort implements SortUtil.Sort{ Q!3_$<5<E>
l[J8!u2Xp
/* (non-Javadoc) zt%Mx>V@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |s_GlJV.
*/ E{(;@PzE
public void sort(int[] data) { a+QpM*n7Lq
int temp; \U_@S.
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +ZV5o&V>
}
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} q3`u1S7Z7
} U0+-W07>
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} ="e+W@C
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冒泡排序: /L3:
5zJq9\)d+
package org.rut.util.algorithm.support; ?7A>+EY
< %Y}R\s?
import org.rut.util.algorithm.SortUtil; Vvo7C!$z
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/** wC*X4 '
* @author treeroot 7 8,n%=nG
* @since 2006-2-2 jiGTA:v
* @version 1.0 - YBY[%jF>
*/ Gm`8q}<I
public class BubbleSort implements SortUtil.Sort{ W*G<X.Hf
Ort(AfW
/* (non-Javadoc) |y*c9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JGZBL{8
*/ zm# ?W
public void sort(int[] data) { ~6gPS
13
int temp; )%]J>&/0J
for(int i=0;i for(int j=data.length-1;j>i;j--){ >mkFV@`
if(data[j] SortUtil.swap(data,j,j-1); A}^mdw9
} +|f@^-
} }B^tL$k
} |BYRe1l6l
} QWU-m{@~&
u@^LW<eD
} HKe K<V
{h4E8.E
选择排序: I 6O
F[MFx^sT{
package org.rut.util.algorithm.support; 1H9!5=Ff
u:b=\T L
import org.rut.util.algorithm.SortUtil; 3XKf!P
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/** !~Z"9(v'C
* @author treeroot [B3RfCV{
* @since 2006-2-2 (%9$! v{3
* @version 1.0 13f)&#, F
*/ ('~LMu_
public class SelectionSort implements SortUtil.Sort { 2zpr~cB=
tp|d*7^i
/* <N@Gu!N8
* (non-Javadoc) P2Y^d#jO
* xD$\,{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S>{~nOYt-`
*/ !'Kjx
public void sort(int[] data) { pot~<d`:K"
int temp; u:EiwRW
for (int i = 0; i < data.length; i++) { ,?3G;-
int lowIndex = i; ;kK/_%gN-G
for (int j = data.length - 1; j > i; j--) { adw2x pj
if (data[j] < data[lowIndex]) { "#48% -'x
lowIndex = j; \v/[6&|X0s
} ]R *A
} j.YA2mr
SortUtil.swap(data,i,lowIndex); 0$njMnB2l
} G&dKY h\
} Mp]rUPK
Debv4Gr;^
} Dzbz)Zst
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Shell排序: uw7zWJ
n
ElXFeJ%[G
package org.rut.util.algorithm.support; DI%saw
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import org.rut.util.algorithm.SortUtil; o(HbGHIP
+n)9Tz5
/** ;=N#`l
* @author treeroot 0`hdMLONR
* @since 2006-2-2 ;nGa.= "L
* @version 1.0 q:(%*sY>
*/ UI#h&j5pW
public class ShellSort implements SortUtil.Sort{ `2snz1>!j
j@9T.P1
/* (non-Javadoc) ix$bRdl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z}QB.$&
*/ >V~E]P%@
public void sort(int[] data) { wj+*E6o-n
for(int i=data.length/2;i>2;i/=2){ :%.D78&
for(int j=0;j insertSort(data,j,i); 8_8l.!~
} #F#%`Rv1
} `9 L>*
insertSort(data,0,1); KSvE~h[#+
} l\mPHA23
HDLk>_N_s,
/** +0~YP*I`/
* @param data ]!
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* @param j J *yg&
* @param i yw!{MO
*/ P'2Qen*
private void insertSort(int[] data, int start, int inc) { "#] $r
int temp; jF>[?L
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #jk_5W
} -%~4W?
} q@&6#B
} d@^ZSy>L2
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} B6"0OIDY"
n ;Ei\\p!
快速排序: ;,TFr}p`
y*? Jui Q
package org.rut.util.algorithm.support; %$I;{-LD
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import org.rut.util.algorithm.SortUtil; ]yu:i-SfP
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/** TV:9bn?r)
* @author treeroot "8/,Y"W"
* @since 2006-2-2 5bIw?%dk(
* @version 1.0 Bwrx *J
*/ S3#>9k;p
public class QuickSort implements SortUtil.Sort{ CAe!7HiR
%C0Dw\A*:
/* (non-Javadoc) [m -bV$-d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E@\e$?*X
*/ ,I9bNO,%JK
public void sort(int[] data) { 0a7Ppntb@
quickSort(data,0,data.length-1); H::bwn`Vc
} 3
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private void quickSort(int[] data,int i,int j){ $:6!H:ty
int pivotIndex=(i+j)/2; wq{hF<
file://swap Q/?$x*\>
SortUtil.swap(data,pivotIndex,j); -4K5-|>O
0"R|..l/
int k=partition(data,i-1,j,data[j]); uNyVf7u
SortUtil.swap(data,k,j); {vj)76%y
if((k-i)>1) quickSort(data,i,k-1); Zfw,7am/
if((j-k)>1) quickSort(data,k+1,j); rjP/l6
~'
3^ClAE"8
} iCoX&"lb
/** e.%nRhSs3
* @param data xo)P?-
* @param i cNrg#Asen&
* @param j Q59suL
* @return bD^owa
*/ ("@!>|H
private int partition(int[] data, int l, int r,int pivot) { iscz}E,Y
do{ B?QIN]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); s.rm7r@#
SortUtil.swap(data,l,r); `^vE9nW7
} sKWfXCd
while(l SortUtil.swap(data,l,r); z}<^jgJ
return l; _`V'r#Qn
} VTM/hJmwJ
wzA$'+Mb
} W_=f'yb:E
}bDm@NU
改进后的快速排序: bcyzhK=
1 zZlC#V
package org.rut.util.algorithm.support; |)&%A%m
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import org.rut.util.algorithm.SortUtil; Xvv6~
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/** 6863xOv{T
* @author treeroot gi8FHSU|G
* @since 2006-2-2 wY#E?,
* @version 1.0 R-:2HRaA
*/ ?[AD=rUC
public class ImprovedQuickSort implements SortUtil.Sort { c$,P ~Ws'
Z;i:](
private static int MAX_STACK_SIZE=4096; Dv"9qk
private static int THRESHOLD=10; ;gkM{={`p
/* (non-Javadoc) ZNoDFf*h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 45e~6",
*/ sB</DS
public void sort(int[] data) { XSDpRo
int[] stack=new int[MAX_STACK_SIZE]; '%qr.T
%
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int top=-1; r$1Qf}J3=
int pivot; |>Vb9:q9Po
int pivotIndex,l,r; )4OxY[2J
{=WgzP
stack[++top]=0; yfSmDPh
stack[++top]=data.length-1; hM{bavd
+TJCLZ..
while(top>0){ M{@(G5
int j=stack[top--]; =(Mch~
int i=stack[top--]; -~0^P,yQ
hrn+UL:d
pivotIndex=(i+j)/2; P?\6@_ Z
pivot=data[pivotIndex]; @- xjfC\d
XUYtEf
SortUtil.swap(data,pivotIndex,j); QY/w
%{|p j
+
file://partition \<' ?8ri#
l=i-1; L#J1b!D&<6
r=j; fl(wV.Je|
do{ .3;;;K9a~]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uph(V
SortUtil.swap(data,l,r); *T/']t
} Wc#24:OKe3
while(l SortUtil.swap(data,l,r); +2{Lh7Ks
SortUtil.swap(data,l,j); 6t$8M[0-U
khe}*y
if((l-i)>THRESHOLD){ Y|n"dMrL
stack[++top]=i; "[J^YKoF
stack[++top]=l-1; DI>s-7
} e=
AKD#
if((j-l)>THRESHOLD){ yAt^;
stack[++top]=l+1; oxs#866x
stack[++top]=j; ?
k /`
} @5FQX
bw7@5=?;
} Ytkv!]"
file://new InsertSort().sort(data); b;n[mk
insertSort(data); az$FnVNn=
} ,F|f. 7;
/** p2eGm-Erq
* @param data HtFDlvdy]
*/ [WmM6UEVS
private void insertSort(int[] data) { iMlWM-wz>O
int temp; U/U);frH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); icgfB-1|i
} l**X^+=$
} dH!*!r>
} U6K|fYN`
UNYqft4
} CTb%(<r
(zk"~Ud
归并排序: )8AXm
@]j1:PN-
package org.rut.util.algorithm.support; A"]YM'.
kmW4:EA%
import org.rut.util.algorithm.SortUtil; Y4-t7UlS;
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/** *w&e\i|7
* @author treeroot x:Y1P:
* @since 2006-2-2 G\i9:7 `
* @version 1.0 9w"*y#_
*/ OXA7w.^
public class MergeSort implements SortUtil.Sort{ *wearCPeJ
dN q$}
/* (non-Javadoc) h{Y",7]!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N7"W{"3D
*/ gdc<ZYcM
public void sort(int[] data) { 7#Ft|5$~q
int[] temp=new int[data.length]; tw;}jh
mergeSort(data,temp,0,data.length-1); 1Mzmg[L8
} 'L'R9&o<X
a(nlTMfu
private void mergeSort(int[] data,int[] temp,int l,int r){ dd;~K&_Q/i
int mid=(l+r)/2; ?9/G[[(
if(l==r) return ; zCZf%ATq
mergeSort(data,temp,l,mid); :Ye !w$r
mergeSort(data,temp,mid+1,r); 4s-!7
for(int i=l;i<=r;i++){ e
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temp=data; vsPu*[%
} G{}VPcrbC
int i1=l; @JMiO^
int i2=mid+1; fhiM U8(&
for(int cur=l;cur<=r;cur++){ $4LzcwG
if(i1==mid+1) {)XTk&"
data[cur]=temp[i2++]; 79gT+~z
else if(i2>r) N8jIMb'<
data[cur]=temp[i1++]; <~)P7~$d?p
else if(temp[i1] data[cur]=temp[i1++]; ';CNGv -
else 0mE 0 j
data[cur]=temp[i2++]; Ud?Q%)X
} ^qs $v06
} %b$>qW\*&
_6Sp QW
} q V=!ORuj
)9g2D`a4
改进后的归并排序: |Cv!,]9:r
(.:e,l{U%
package org.rut.util.algorithm.support; teRTu
/^ts9:
import org.rut.util.algorithm.SortUtil; >MZ/|`[M
h p1Bi
/** Txu/{M,
* @author treeroot )lkjqFQ(
* @since 2006-2-2 `Di{}/2
* @version 1.0 HMXE$d=[
*/ BmT! aue
public class ImprovedMergeSort implements SortUtil.Sort { i!Ba]n
Gc?a +T
private static final int THRESHOLD = 10; _BufO7`.
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/* 5BIY<B+i
* (non-Javadoc) 4#D,?eA7
* dtDFoETz
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /ZX}Nc g
*/ &>O+}>lr9
public void sort(int[] data) { \bXa&Lq
int[] temp=new int[data.length]; =;L|gtH"
mergeSort(data,temp,0,data.length-1); UQsN'r\tS
} #!=tDc
&
wYea\^co
private void mergeSort(int[] data, int[] temp, int l, int r) { LVyyO3e
int i, j, k; b%+Xy8a
int mid = (l + r) / 2;
a?1Wq
if (l == r) $4\j]RE!
return; *. t^MP
if ((mid - l) >= THRESHOLD) &]Tmxh(
mergeSort(data, temp, l, mid); l1I#QB@5n
else WJi]t9 3
insertSort(data, l, mid - l + 1); +A+)=/i;
if ((r - mid) > THRESHOLD) UKGPtKE<
mergeSort(data, temp, mid + 1, r); mpyt5#f
else y_)FA"IkE
insertSort(data, mid + 1, r - mid); Ry&6p>-
Wwo0%<2y
for (i = l; i <= mid; i++) { e-;}366}
temp = data; !WlH'y-I
} WH\d| 1)
for (j = 1; j <= r - mid; j++) { l/D}
X
temp[r - j + 1] = data[j + mid]; ;uW FHc5@B
} ib m4fa
int a = temp[l]; pH;%ELZ
int b = temp[r]; /r 5eWR1G
for (i = l, j = r, k = l; k <= r; k++) { y =@N|f!
if (a < b) { 4H/OBR
data[k] = temp[i++]; SbZ6t$"
a = temp; )b)z m2;
} else { /Oono6j
data[k] = temp[j--]; Ri'n
b = temp[j]; +ZYn? #IQ
} !D6]JPX
} P>T"cv
} NK+o1
KvSG;
/** 4i bc
* @param data buC{r,
* @param l $b\P|#A
* @param i x-c"%Z|
*/ bt *k.=p
private void insertSort(int[] data, int start, int len) { -j(6;9"7]|
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A&{Nh` q
} -Za/p@gM
} =N@t'fOr
} }]TxlSp!;
} I fir ,8
INf&4!&h
堆排序: CLSK'+l
Xj*Wu_
package org.rut.util.algorithm.support; hZ3bVi)L\
5;?yCWc
import org.rut.util.algorithm.SortUtil; 1M-pr 8:6s
,Q B<7a+I
/** G3]4A&h9v~
* @author treeroot E7hhew
* @since 2006-2-2 rNM;ZPF#
* @version 1.0 ?%86/N>
*/ oU|c.mYe
public class HeapSort implements SortUtil.Sort{ 6zkaOA46V
B!yr!DWv
/* (non-Javadoc) dx]>(e@(t{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /?!u{(h }
*/ !k%#R4*>
public void sort(int[] data) { q4q6c")zp
MaxHeap h=new MaxHeap(); ex|F|0k4}
h.init(data); @x1-!
~z#
for(int i=0;i h.remove(); PH"%kCI:
System.arraycopy(h.queue,1,data,0,data.length); $(
)>g>%
} g`^x@rj`E
V :eD]zq5
private static class MaxHeap{ =43auFY-P
5f /`Q
void init(int[] data){ 5xde;
this.queue=new int[data.length+1]; +(*DT9s+
for(int i=0;i queue[++size]=data; DlT{`
fixUp(size); 2:R+tn(F
} *I'yH8Fcn
} kT?J5u_o
v<;Md-<
private int size=0; GfG|&VNlz
'S~5"6r
private int[] queue; ~
1 pr~
(t.Nk[
public int get() { x"(KBEK~
return queue[1]; edV\-H5<
} =xrv~
E9}C #
public void remove() { zQA`/&=Y
SortUtil.swap(queue,1,size--); H"KCK6
fixDown(1); tDo"K3
} b[yiq$K/
file://fixdown 7rA;3?p)
private void fixDown(int k) { 8Y3I0S
int j; y]imZ4{/
while ((j = k << 1) <= size) { }%z
if (j < size %26amp;%26amp; queue[j] j++; aT<q=DO
if (queue[k]>queue[j]) file://不用交换 "ta x?
break; R3!t$5HG
SortUtil.swap(queue,j,k); jal-9NV)!
k = j; HThcn1u~^b
} 7KPwQ?SjT
} 3F0 N^)@
private void fixUp(int k) { V1?]|HTQcT
while (k > 1) { kLY^!
int j = k >> 1; ca}2TT&t
if (queue[j]>queue[k]) -+5>|N#
break; Tr|JYLwF
SortUtil.swap(queue,j,k); FqifriLN
k = j; b\ PgVBf9
} +3`alHUK
} [V!tVDs&'o
':}\4j&{E
} 2(nlJ7R
*dF>_F
} DN/YHSYK
h$=2 p5'-
SortUtil: 8[>zG2
W`&hp6Jq
package org.rut.util.algorithm; L(o15
e*!kZAf
import org.rut.util.algorithm.support.BubbleSort; V,9cl,z+
import org.rut.util.algorithm.support.HeapSort; 3[&C g
import org.rut.util.algorithm.support.ImprovedMergeSort; .G^YqJ 4
import org.rut.util.algorithm.support.ImprovedQuickSort; h1{3njdr
import org.rut.util.algorithm.support.InsertSort; ~v83pu1!2s
import org.rut.util.algorithm.support.MergeSort; 5?L<N:;J_
import org.rut.util.algorithm.support.QuickSort; KU;9}!#
import org.rut.util.algorithm.support.SelectionSort; Q &t<Y^B
import org.rut.util.algorithm.support.ShellSort; iCyfOh
_rYkis^u
/** [r-p]"R
* @author treeroot 1sCR4L:+
* @since 2006-2-2 <ih[TtZ
* @version 1.0 -![|}pX
*/ +*^H#|!
public class SortUtil { }-fl$j?9E
public final static int INSERT = 1; " Jr-J#gg
public final static int BUBBLE = 2; &[SC|=U'M
public final static int SELECTION = 3; kN>!2UfNS
public final static int SHELL = 4; `"~%bS
public final static int QUICK = 5; QM]YJr3rE
public final static int IMPROVED_QUICK = 6; @P"p+
public final static int MERGE = 7; G\?YK.Y>
public final static int IMPROVED_MERGE = 8; "]iB6
public final static int HEAP = 9; B?qjkP
:L;a:xSpn=
public static void sort(int[] data) { "\=U)CJ
sort(data, IMPROVED_QUICK); "vGW2~*)
} D-4f.Tq4#
private static String[] name={ JLi|Td"1%
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :ivf/xn
}; j=J/x:w_e
?rIx/>C9
private static Sort[] impl=new Sort[]{ g ci
new InsertSort(), 0^ibNiSP
new BubbleSort(), '\GbmD^F
new SelectionSort(), v}x&?fU `
new ShellSort(), G9:l'\
new QuickSort(), V>
bCKtf&
new ImprovedQuickSort(), j5ve2LiFV%
new MergeSort(), EIQ
p>|5
new ImprovedMergeSort(), [9 RR8
new HeapSort() gdoLyxQ
}; -gWZwW/lD
PT9*)9<L
public static String toString(int algorithm){ Faf&U%]*`
return name[algorithm-1]; ~nPtlrQa#*
} %#}Z y
qv"$Bd:]r
public static void sort(int[] data, int algorithm) { o lxByzTh>
impl[algorithm-1].sort(data); O<\@~U
} j)GtEP<n#
* H9 8Du
public static interface Sort { W];dD$Oqg
public void sort(int[] data); m_l[MG\
} A4ygW:
P2*<GjV`S/
public static void swap(int[] data, int i, int j) { "T"h)L<
int temp = data; ##o#eZq:"
data = data[j]; ``Un&-Ms
data[j] = temp; L^Fy#p
} (M
~e?s
} ,1##p77.