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。 Q=T/hb
插入排序: GjGt'
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package org.rut.util.algorithm.support; PAHkF&
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import org.rut.util.algorithm.SortUtil; j%@wQVxq
/** QZ^P2==x
* @author treeroot z*BGaSX %
* @since 2006-2-2 ~LufHbr
* @version 1.0 })^%>yLfc|
*/ 3Z-N*bhC
public class InsertSort implements SortUtil.Sort{ ITf,
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0
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/* (non-Javadoc) m#kJ((~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \$%q <_l
*/ %L;;W,l$`)
public void sort(int[] data) { xY,W[?3CY
int temp; i!k5P".o^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yYri.n
} rbD}fUg
} s_`=ugue
} }:f
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uxsfQ%3`#
} C.rLog#
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冒泡排序: tH\ aHU[
?O!'ZZX
package org.rut.util.algorithm.support; zJ7=r#b
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import org.rut.util.algorithm.SortUtil; X
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/** <!qv$3/7
* @author treeroot Pk6l*+"r<
* @since 2006-2-2 6}aH>(3!A
* @version 1.0 SC6cFyp2
*/ tbr1mw'G
public class BubbleSort implements SortUtil.Sort{ \ Rff3$
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/* (non-Javadoc) @ a?^2X^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %:~LU]KX
*/ '.8E_Jd0E
public void sort(int[] data) { >lg-j-pV
int temp; 43p0k&;-7
for(int i=0;i for(int j=data.length-1;j>i;j--){ TtZ
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if(data[j] SortUtil.swap(data,j,j-1); H*M )<"X
} Oi~]~+2
} E)h&<{%
} ci~pM<+
} 4?3*%_bDJ,
9Nkr=/I"P
} A^9RGz4=
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选择排序: M],}.l
ZI8*PX%2
package org.rut.util.algorithm.support; f4Yn=D=_
GVaIZh<
import org.rut.util.algorithm.SortUtil; l(CMP!mY
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/** yK #9)W-
* @author treeroot |*w}bT(PfR
* @since 2006-2-2 ",hPy[k
* @version 1.0 WHM|kt
*/ O
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public class SelectionSort implements SortUtil.Sort { +v7mw<6s
$%3"@$
/* [A.ix}3mm
* (non-Javadoc) \UF/_'=K
* 5/ee&sJR
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yG`J3++
S
*/ Rz Os,
public void sort(int[] data) { P&s-U6
int temp; Id/-u[-yo
for (int i = 0; i < data.length; i++) { U^n71m>]%T
int lowIndex = i; =@%Ukrd@
for (int j = data.length - 1; j > i; j--) { `=zlS"dQ
if (data[j] < data[lowIndex]) { a->;K+
lowIndex = j; \.`;p
} zB?} {@
} [K\Vc9
SortUtil.swap(data,i,lowIndex); {-T}"WHg7
} oVK3=m@{
} #'@pL0dj
O)$rC
} 907N;r
.}wVM`81z
Shell排序: #s\HiO$BT
rY~!hZ
package org.rut.util.algorithm.support; *Va ;ra(V2
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import org.rut.util.algorithm.SortUtil; *CIR$sS
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/** nD8 Qeem@
* @author treeroot [dQL6k";b
* @since 2006-2-2 . paA0j
* @version 1.0 JZa^GW:YQh
*/ E=H>|FgS
public class ShellSort implements SortUtil.Sort{ z^ai *
/ bxu{|.
/* (non-Javadoc) R 2{ kS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,v#F6xv8
*/ :"vW;$1
}
public void sort(int[] data) { r~q(m>Ct6
for(int i=data.length/2;i>2;i/=2){ xzZ2?zWi
for(int j=0;j insertSort(data,j,i); ,[}
XK9
} B#+0jdF;
} _V.MmA
insertSort(data,0,1); !iys\ AV
} <WHu</
)g()b"Z
#>
/** g+X .8>=
* @param data r+0<A.''a
* @param j 4R(H@p%+r2
* @param i +;T `uOF}
*/ yobcAV`
private void insertSort(int[] data, int start, int inc) { l"{1v~I
int temp; fLtN-w6t
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =T?:b8yV
} ~$WBc qo
} |#>:@{X<
} SJ4+s4!l
<
l\HLlwYO
} dbE]&w`?d
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快速排序: A"V($:>U
XK";-7TZt
package org.rut.util.algorithm.support; Q[wTV3d
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import org.rut.util.algorithm.SortUtil; tbH`VD"u
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/** d
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* @author treeroot H;~Lv;,g,
* @since 2006-2-2 9i=HZ\s3
* @version 1.0 pGsk[.
*/ +=V[7^K;
public class QuickSort implements SortUtil.Sort{ TI<?h(*R_
Ik\n/EE
/* (non-Javadoc) w
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mnG\qsKNLK
*/ #hQ#_7
public void sort(int[] data) { }MiEbLduN
quickSort(data,0,data.length-1); oOAn 5t@
} UA8*8%v
private void quickSort(int[] data,int i,int j){ 7~ I*u6zY
int pivotIndex=(i+j)/2; DD?zbN0X
file://swap \se
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SortUtil.swap(data,pivotIndex,j); >x3$Ld
P&=H<^yd
int k=partition(data,i-1,j,data[j]); 4%GwCEnS
SortUtil.swap(data,k,j); 9*<=K
if((k-i)>1) quickSort(data,i,k-1); n|M~C\*
if((j-k)>1) quickSort(data,k+1,j); |c)hyw?[Y
7:S4 Ur
} Jqp;8DV}
/** !P"@oJ/Yy_
* @param data JS^QfT,zE
* @param i 6/=0RTd
* @param j <Rb[0E$
* @return MV?#g-5
*/ "8#EA<lsS
private int partition(int[] data, int l, int r,int pivot) { ? koIZ
do{ sA|!b.q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O!U8"Yr$
SortUtil.swap(data,l,r); wR%F>[6.{
} c]+uj q
while(l SortUtil.swap(data,l,r); t8?$q})RL
return l; ng6".u9
} 9{cpxJ
v[+ ]
} 4c'F.0^
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改进后的快速排序: TZ+- >CG
NE)Yd7m-
package org.rut.util.algorithm.support; @d1YN]ede
r^v1_u,1I
import org.rut.util.algorithm.SortUtil; 8-&c%h
1
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/** dQQ!QbI(.
* @author treeroot L']"I^(N
* @since 2006-2-2 8svN*`[
* @version 1.0 nXT/zfS
*/ )jPIBzMys
public class ImprovedQuickSort implements SortUtil.Sort { w\zNn4B})A
4G3u8)b=
private static int MAX_STACK_SIZE=4096; h3rVa6cxM
private static int THRESHOLD=10; |r+w(TG
/* (non-Javadoc) v
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q.MbzSgXL
*/ {%+UQ!]d8
public void sort(int[] data) { E;rS"'D:
int[] stack=new int[MAX_STACK_SIZE]; <
UD90}
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int top=-1; '>k1h.i
int pivot; ^jE8
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int pivotIndex,l,r; H6hhU'Kxf8
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stack[++top]=0; E(_lm&,4+
stack[++top]=data.length-1; 88VI
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while(top>0){ QYEGiT
int j=stack[top--]; 1}~ZsrF
int i=stack[top--]; p2
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pivotIndex=(i+j)/2; +k V$ @qH
pivot=data[pivotIndex]; 32Wa{LG;2
PPde!}T$
SortUtil.swap(data,pivotIndex,j);
i (`Q{l
Y?- "HK:
file://partition R5xV_;wD
l=i-1; M5P3;
r=j; ;B!p4hu
do{ ]GDjR'[z
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _zkTx7H
SortUtil.swap(data,l,r); Q$Rp?o&
} U#%+FLX@w
while(l SortUtil.swap(data,l,r); :`c@&WF8
SortUtil.swap(data,l,j); Z4g<Ys*
>`<qa!9
if((l-i)>THRESHOLD){ 8\G"I
stack[++top]=i; Rq`5ff3,
stack[++top]=l-1; mnx`e>0
} U?ZWDr"*`w
if((j-l)>THRESHOLD){ 3_>=Cv}
stack[++top]=l+1; y,K> Wb9e
stack[++top]=j; FH{p1_kZ=
} l5D4?`|
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sK
} u4'B
file://new InsertSort().sort(data); lYey7tl{
insertSort(data); C}ASVywc,1
} Qn.3B
/** \YHl(
* @param data wYDdy gS
*/ S4rm K&
private void insertSort(int[] data) { m}f{o
int temp; \Y`psSf+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (hh^?
} PS0/Ok
} )-h{0o
} ["e;8H[K)%
v^;vH$B
} CAmIwAx6;
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归并排序: $ab{GxmX'4
H%Z;Yt8^gt
package org.rut.util.algorithm.support; `R!2N4|;
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import org.rut.util.algorithm.SortUtil;
@H^\PH?pp
ap,zC)[
/** l<'}`
* @author treeroot >U?#'e{qW
* @since 2006-2-2 [z6P]eC7
* @version 1.0 b<[]z,
*/ ~M1T
@Mv
public class MergeSort implements SortUtil.Sort{ RRzLQ7J
Fq`@sM$
/* (non-Javadoc) s@Loax6@B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AP8J28I
*/ yo$A0Ti!w
public void sort(int[] data) { !1@oZ(
int[] temp=new int[data.length]; $Rn9*OKr
mergeSort(data,temp,0,data.length-1); %eGD1.R
} 8#4Gs Q"
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private void mergeSort(int[] data,int[] temp,int l,int r){ *Wcq'S
int mid=(l+r)/2; |CK/-UG}
if(l==r) return ; K6@ %@v
mergeSort(data,temp,l,mid); uC6e2py<[
mergeSort(data,temp,mid+1,r); ,mK UCG
for(int i=l;i<=r;i++){ tf1Y5P$
temp=data; QUF1_Sa
} Ri}JM3\J
int i1=l; 23opaX5V=
int i2=mid+1; QkLcs6)R
for(int cur=l;cur<=r;cur++){ Ct:c%D(L
if(i1==mid+1) A2Iqn5
data[cur]=temp[i2++]; ?ZkVk =t?
else if(i2>r) V;P*/ke
data[cur]=temp[i1++]; }VVtv1
else if(temp[i1] data[cur]=temp[i1++]; %WYveY
else D2io3Lo$ov
data[cur]=temp[i2++]; L:jv%;DM
} 'lgS)m
} /)rv Ndn
SL_JA
} WckWX]};S
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改进后的归并排序: [kPl7[OL
P%<MQg|k`
package org.rut.util.algorithm.support; 0_t9;;y :
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import org.rut.util.algorithm.SortUtil; lvUWs
ntZHO}'
/** ,{Z!T5 |
* @author treeroot !T}R=;)eh
* @since 2006-2-2 t /lU*
* @version 1.0 PW9tZx#
*/ :r&4/sN}<
public class ImprovedMergeSort implements SortUtil.Sort { #O7phjzgD
kQrby\F(<
private static final int THRESHOLD = 10; 1#2L9Bi
x![ut
/* [Fr <tKtB
* (non-Javadoc) X C'|
* /)r[}C0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2JHV*/Q
*/ m\K1Ex
public void sort(int[] data) { A.<M*[{q
int[] temp=new int[data.length]; MhN8'y(
mergeSort(data,temp,0,data.length-1); AQ,%5MeqJ
} VJtRL')
<ol?9tm
private void mergeSort(int[] data, int[] temp, int l, int r) { @$?*UI6y
int i, j, k; U@)WTH6d
int mid = (l + r) / 2; f5.Be%
if (l == r) "GAKi}y">v
return; <@qJsRbhK
if ((mid - l) >= THRESHOLD)
;.~D!
mergeSort(data, temp, l, mid); !:1BuiL
else vz)zl2F5sY
insertSort(data, l, mid - l + 1); S2$r 6T
if ((r - mid) > THRESHOLD) 6H|&HV(!R
mergeSort(data, temp, mid + 1, r); CrX1qyR
else 4aG}ex-s|
insertSort(data, mid + 1, r - mid); t},71Ry
/ASpAl[J
for (i = l; i <= mid; i++) { ;-kg3fGB1Q
temp = data; e{*z4q1
} -M`+hVs?
for (j = 1; j <= r - mid; j++) { E1|:t$>Ld
temp[r - j + 1] = data[j + mid]; r6}-EYq=
} IHe?/oUL"b
int a = temp[l]; ;x4yidb6
int b = temp[r]; v$R7"
for (i = l, j = r, k = l; k <= r; k++) { =M34
HPG
if (a < b) { t` zPx#])
data[k] = temp[i++]; HO39>:c
a = temp; iKgH
:[j
} else { HQrx9CXE
data[k] = temp[j--]; 2;YL+v2
b = temp[j]; Bet?]4\_
} !Bb^M3iA
} @86I|cY
} CNyV6jb
]Hrw$\Ky
/** f_tC:T4a
* @param data stlkt>9
* @param l 6>/g`%`N
* @param i 6ieP` bct
*/ oF(|NS^
private void insertSort(int[] data, int start, int len) { Uj>bWa`
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jftf]n&Z(q
} s;YuB#Z
} bF? {
} ]08
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} mO^vKq4r.
xX{gm'3UYa
堆排序: g2GHsVS
!"N-To-c
package org.rut.util.algorithm.support; $rmfE
C(5B/W6
import org.rut.util.algorithm.SortUtil; %n>*jFC
0]`%iG|
/** %PxJnMb?
* @author treeroot !;;WS~no3
* @since 2006-2-2 / FA0(< -}
* @version 1.0 ($Ck5`_MK
*/ +umVl
public class HeapSort implements SortUtil.Sort{ I]Jz[{~1
eh}{\P
/* (non-Javadoc) SpiI9)gp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5$L=l
*/ h;2n2.Q
public void sort(int[] data) { p1(<F_Kta
MaxHeap h=new MaxHeap(); B]|"ePj-
h.init(data); XKepk? E
for(int i=0;i h.remove(); IJV1=/NJW
System.arraycopy(h.queue,1,data,0,data.length); 5t~p99#?
} Uk|(VR9
8\@&~&(y:
private static class MaxHeap{ 7! "OF
[agp06 $D?
void init(int[] data){ HCTjFW>C
this.queue=new int[data.length+1]; ^+zhzfJ
for(int i=0;i queue[++size]=data; XhEd9>#
fixUp(size); [<p7'n3x
} ;OynkZs)
} ffqz
:6
p?,:
private int size=0; pv #uLo
}D>nXhO&
private int[] queue; TwZASn]o
L#^'9v}Hb
public int get() { WYklS<B[
return queue[1]; T,eP&IN
} A$]&j5nh|
0kdPr:B Q0
public void remove() { u!VAAX
SortUtil.swap(queue,1,size--); -$js5Gx1
fixDown(1); U,w J8
} !$i*u-%4
file://fixdown 3j
iSvrfI
private void fixDown(int k) { zrg#BXj7
int j; DZI:zsf;5Q
while ((j = k << 1) <= size) { 5 UQbd8
if (j < size %26amp;%26amp; queue[j] j++; ]%y3*N@AZ
if (queue[k]>queue[j]) file://不用交换 5}uH;E)4
break; N5%zbfKM
SortUtil.swap(queue,j,k); Qwm#6{5
k = j; hS}d vZa
} ~K-c-Zs#z
} ^6E+l#
private void fixUp(int k) { ?Q]{P]
while (k > 1) { D/
SM/
int j = k >> 1; 8 N5ga
if (queue[j]>queue[k]) 5D32d1A
break; IP 9{vk
SortUtil.swap(queue,j,k); d }"Dp
k = j; U?}>A5H
} 2$MIA?A"Y
} <{"]&bl
,(6U3W*bu
} AI|8E8h+D
KfO$bmwmx
} 4\.1phe$a
/NH9$u.g
SortUtil: 5jTBPct
S|{'.XG
package org.rut.util.algorithm; >>ncq$
'n9<z)/,!
import org.rut.util.algorithm.support.BubbleSort; {p{TG5rwX
import org.rut.util.algorithm.support.HeapSort; QeK@++EVc
import org.rut.util.algorithm.support.ImprovedMergeSort; yj6o533o
import org.rut.util.algorithm.support.ImprovedQuickSort; ZZ<uiN$
import org.rut.util.algorithm.support.InsertSort; LG0z|x(
import org.rut.util.algorithm.support.MergeSort; -\b$5oa(
import org.rut.util.algorithm.support.QuickSort; ]pZxbs&Vb
import org.rut.util.algorithm.support.SelectionSort; N6"b
OxJ(
import org.rut.util.algorithm.support.ShellSort; |6%B2I&c
Q]Ymv:M,
/** &B</^:
* @author treeroot ;^q@w
* @since 2006-2-2 1<y|,
* @version 1.0 s)=fs#%
*/ [Ch)6p
public class SortUtil {
p97}HT}
public final static int INSERT = 1; wF +9Iu
public final static int BUBBLE = 2; w"Q6'/P
public final static int SELECTION = 3; \
2$nFr?0
public final static int SHELL = 4; nhfHY-l}7
public final static int QUICK = 5; 03WLVP@
public final static int IMPROVED_QUICK = 6; 6*] g)m
public final static int MERGE = 7; 7X
h'VOljB
public final static int IMPROVED_MERGE = 8; Xndgs}zz
public final static int HEAP = 9; b
h%@Lo
Sn I-dXNF
public static void sort(int[] data) { )T-C/ 3
sort(data, IMPROVED_QUICK); 5J d7<AO_
} *}pl
private static String[] name={ Zc_%hQf2A
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7oj
^(R,
}; t%
-"h|
)20jZm*
private static Sort[] impl=new Sort[]{ uSeRn@
new InsertSort(), Htg,^d 5
new BubbleSort(), pvCf4pf~
new SelectionSort(), 0y>]68D
new ShellSort(), mVJW"*}8
new QuickSort(), &+@~;p5F
new ImprovedQuickSort(), 4fK(<2i
new MergeSort(), y\=(;]S'
new ImprovedMergeSort(), Mw=sW5Z
new HeapSort() :xn/9y+s
}; *Y4h26
ikr|P&e#u
public static String toString(int algorithm){ G+k[.
return name[algorithm-1]; 4 1w*<{Lk
} Gi7jgv{{
KC+C?]~M
public static void sort(int[] data, int algorithm) { !1i(6 ?~#4
impl[algorithm-1].sort(data); :)!X%2_
} `t0?PpUo
I)wjTTM5
public static interface Sort { 'dE G\?v9
public void sort(int[] data); l[KFK%?
} Y^zL}@
2_^{Vez@I
public static void swap(int[] data, int i, int j) { "qL4D4
int temp = data; Hwr#
NKz-
data = data[j]; I\NiA>c
data[j] = temp; ye -o'%{
} jy=dB-&
} ' 0iXx