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。 R*1kR|*_)
插入排序: 1u]P4Gf=
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package org.rut.util.algorithm.support; g"Qh]:
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import org.rut.util.algorithm.SortUtil; lf>nbvp
/** BzpP7 ZWV
* @author treeroot :^C'<SY2Gs
* @since 2006-2-2 Qq0l*)mX
* @version 1.0 b'x$2K;E
*/ *i$ePVU
public class InsertSort implements SortUtil.Sort{ Snf"z8sw
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/* (non-Javadoc) TTI81:fku
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <64HveJ
*/ tPuut\ee
public void sort(int[] data) { }0=<6\+:`
int temp; lm'Zy"~::
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z&nZ<ih
} 7N2\8kP
} Q"J-tP!
} 6R}j-1
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} -E&e1u,Mi
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冒泡排序: 9w;?-
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package org.rut.util.algorithm.support; us)*2`?6t
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import org.rut.util.algorithm.SortUtil; H!IDV}dn
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/** ~hN~>0O
* @author treeroot c"gsB!xh
* @since 2006-2-2 nl/UdgI
* @version 1.0 "c`xH@D
*/ xc'vS>&
public class BubbleSort implements SortUtil.Sort{ V*jsq[q=
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/* (non-Javadoc) Q]JX`HgPaU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o96:4j4
*/ ?Z %:
public void sort(int[] data) { p5]_}I`+2
int temp; EU`T6M
for(int i=0;i for(int j=data.length-1;j>i;j--){ {_ V0
if(data[j] SortUtil.swap(data,j,j-1); "/x_>ui1F
} LZ~`29qw(
} ~o15#Pfn/
} T|'&K:[TJ
} b#Kq[}
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} k{Lv37H
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选择排序: W=-|`
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package org.rut.util.algorithm.support; KS>$`ax,
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import org.rut.util.algorithm.SortUtil; |w)5;uQ&\
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/** X:q_c =X
* @author treeroot o$_93<zc
* @since 2006-2-2 cqL(^R.
* @version 1.0 E'dX)J9e$/
*/ ^)\+l%M
public class SelectionSort implements SortUtil.Sort { `ti8-
delf
]
/* L`K;IV%;
* (non-Javadoc) VQ
|^
* p!"(s/=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q</h-skLZ
*/ E8[XG2ye
public void sort(int[] data) { +g\;bLT
int temp; o'UHStk
for (int i = 0; i < data.length; i++) { 3o8\/-*<
int lowIndex = i; Y)p4]>lT+8
for (int j = data.length - 1; j > i; j--) { Gbb\h
if (data[j] < data[lowIndex]) { INNAYQ
lowIndex = j; l)@:T|)c
} lmFA&s"m
} F1u)i
SortUtil.swap(data,i,lowIndex); #\FT EY!
} Gt^d;7x]
} pt!'v$G/*
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} YF[$Q=7.
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Shell排序: >[3X]n,0
uW[3G
package org.rut.util.algorithm.support; dtW0\^ .L
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import org.rut.util.algorithm.SortUtil; nxRwWj57
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/** @ ^.*$E5
* @author treeroot ,/o(|sks
* @since 2006-2-2 %8D?$v"#Z
* @version 1.0 1X@b?6
*/ YN#XmX%
public class ShellSort implements SortUtil.Sort{ HF4Lqh'oco
rWr/ p^~
/* (non-Javadoc) yh!B!v'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ks:{TA27
*/ d.\PS9l
public void sort(int[] data) { _t.FL@3e
for(int i=data.length/2;i>2;i/=2){ BI/y<6#rR
for(int j=0;j insertSort(data,j,i); ~gt3Omh
} +qE']yzm!
} Bcaw~WD
insertSort(data,0,1); bF6gBM@*
} S:Xs'0K_
(6-y+LG
/** 0BXs&i-TP5
* @param data X7&U3v
* @param j >;}]pI0T
* @param i j J-d/"(
*/ SJ[AiHR
private void insertSort(int[] data, int start, int inc) { j!CU
int temp; qZ?{-Vw
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); TK %<a/
} %^U"Spv;
} "uS7PplyO
} EqQ3=XMUL@
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} "cQvd(kug
v,*Q]r0m
快速排序: D+hB[*7Fs
19w_tSg
package org.rut.util.algorithm.support; c.-cpFk^L&
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import org.rut.util.algorithm.SortUtil; bN!u}DnN
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/** PS/W
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* @author treeroot -;<>tq'3`
* @since 2006-2-2 i\vpGlx
* @version 1.0 Z?C4a}
*/ w Oj88J)
public class QuickSort implements SortUtil.Sort{ >\&= [C
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/* (non-Javadoc) b_ZNI0Hp@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XK3!V|y`
*/ bZK+9IR
public void sort(int[] data) { YPG,9iZ&f
quickSort(data,0,data.length-1); <oZ(n g@X
} Vp\80D&
private void quickSort(int[] data,int i,int j){ *f?S5.
int pivotIndex=(i+j)/2; o[n<M>@
file://swap qr9Imr0w<
SortUtil.swap(data,pivotIndex,j); !^]q0x
+#9xA6,AE
int k=partition(data,i-1,j,data[j]); {sl~2#,}b1
SortUtil.swap(data,k,j); avVmY|I
if((k-i)>1) quickSort(data,i,k-1); wn{]#n=|l
if((j-k)>1) quickSort(data,k+1,j); InP[yFV-z
~@ ?"'!U
} ,,Jjr[A_j
/** ~R'BU=!;F
* @param data +R9%~Z.=
* @param i Vv2{^!aZ
* @param j Fdr*xHx$P
* @return 2*Va9HP!q
*/ f@h2;An$w
private int partition(int[] data, int l, int r,int pivot) { ['?^>jfr
do{ 48:liR
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'Z59<Y a&x
SortUtil.swap(data,l,r); -ywX5B
} "2%y~jrDN
while(l SortUtil.swap(data,l,r); 8B_0!U&]
return l; "wC0eDf
} XRtyC4f
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} i]LU4y%'
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改进后的快速排序: T\)dt?Tv#\
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package org.rut.util.algorithm.support; G 2!}R
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import org.rut.util.algorithm.SortUtil; IN<:P
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/** dZ.}j&ZH'
* @author treeroot LgO i3
* @since 2006-2-2 J1nXAh)J
* @version 1.0 ?<Z)*CF)
*/ A\Lr<{Jh
public class ImprovedQuickSort implements SortUtil.Sort { H]VsOr
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private static int MAX_STACK_SIZE=4096; fYb KmB
private static int THRESHOLD=10; <=$rU232}
/* (non-Javadoc) SgyqmYTvZw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 23)F-.C}j
*/ D7EXqo
public void sort(int[] data) { ~Ry
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int[] stack=new int[MAX_STACK_SIZE]; )o86lH"z
ful]OLV+
int top=-1; hcd!A5
int pivot; <zfO1~^
int pivotIndex,l,r; =VCi8jDkP
7E;>E9 '
stack[++top]=0; Dp%5$wF)8
stack[++top]=data.length-1; W]} #\\$z
u):X>??
while(top>0){ jG
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int j=stack[top--]; A J<iM)l|
int i=stack[top--]; X77A; US
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pivotIndex=(i+j)/2; 37J\i ]
pivot=data[pivotIndex]; 0Ddn@!J*
u4go*#
SortUtil.swap(data,pivotIndex,j); JqL<$mSep
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file://partition &uv>'S#%
l=i-1; JJ^iy*v
r=j; %j~9O~-
do{ (r.$%[,.<
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); V#p G; ,
SortUtil.swap(data,l,r); 9"m,p
} qJ#L)
while(l SortUtil.swap(data,l,r); xAR^
SortUtil.swap(data,l,j);
*K]>}
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if((l-i)>THRESHOLD){ C}x4#bNK
stack[++top]=i; P}ehNt*($
stack[++top]=l-1; OI)&vQ5k
} Q3 K;kS
if((j-l)>THRESHOLD){ k/$Ja;
stack[++top]=l+1; SS>:Sw
stack[++top]=j; oA(. vr
} ]s1TJw [B
:7HVBH
} ~Da
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file://new InsertSort().sort(data); '?&B5C
insertSort(data); 'e+-,CGdY\
} 9nP*N`
/** daaga}]d
* @param data sV9{4T~#|
*/ uYG #c(lc
private void insertSort(int[] data) { )_Z]=5Ds
int temp; BsoFQw4$9
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y2RxD\!Z
} 'DaNR`9
} m]+X}|
} 9'L1KQ
^N*pIVLC
} |HKHN?)
8cYuzt]..
归并排序: nOA,x
C=xo&I7
package org.rut.util.algorithm.support; A"P\4
X=S}WKu
import org.rut.util.algorithm.SortUtil; E9~&f^f
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/** _*OaiEL+:
* @author treeroot *@b~f&Lx6
* @since 2006-2-2 %8bFQNd
* @version 1.0 rRF+\cP?.
*/ $g}/T_26
public class MergeSort implements SortUtil.Sort{ LbtlcpF*~5
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/* (non-Javadoc) brpN>\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [A.eVuV;+
*/ UcKWa>:Fi
public void sort(int[] data) { rm7*l<v6
int[] temp=new int[data.length]; 'tq\<y
mergeSort(data,temp,0,data.length-1); g/n"N>L
} )[^:]}%r
ThT.iD[
private void mergeSort(int[] data,int[] temp,int l,int r){ m%BMd
int mid=(l+r)/2; ;I0yQlx|U
if(l==r) return ; a8lo!e9q
mergeSort(data,temp,l,mid); 'xu7AKpU)
mergeSort(data,temp,mid+1,r); ul5::
for(int i=l;i<=r;i++){ A_X^k|)T
temp=data; IArpCF/"8
} (>)+;$Dr,\
int i1=l; %>x0*T$$
int i2=mid+1; .q|xMS}4
for(int cur=l;cur<=r;cur++){ !T&u2=`D
if(i1==mid+1) b{yH4)O
data[cur]=temp[i2++]; V.E.~<7D\
else if(i2>r) Q
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data[cur]=temp[i1++]; 6i?kkULBS
else if(temp[i1] data[cur]=temp[i1++]; 52q!zx E
else B4M'Er{v
data[cur]=temp[i2++]; Bt`r6v;\
} /M{)k_V
} 7\Yq]:;O
&`\kb2uep
} l#J>It\
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改进后的归并排序: S4uR\|
#q^>qX
y
package org.rut.util.algorithm.support; sov62wuqU
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import org.rut.util.algorithm.SortUtil; ,_4KyLfBF
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/** Q%b46"
* @author treeroot vp9E}ga
* @since 2006-2-2 C9^elcdv
* @version 1.0 `zvT5=*-#
*/ u.xA}yVS
public class ImprovedMergeSort implements SortUtil.Sort { U%SNROj
=fu_ Jau}
private static final int THRESHOLD = 10; 0 ^-b}
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/* Ug[F3J|Mu
* (non-Javadoc) *^&iw$Qx3
* 36D,el In
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r:S5x. P2
*/ k+>p!1
public void sort(int[] data) { r0XGGLFuZl
int[] temp=new int[data.length]; >=RHE@
mergeSort(data,temp,0,data.length-1); ~A{[=v
} *TMM:w|1
lf7H8k, -
private void mergeSort(int[] data, int[] temp, int l, int r) { [+[fD
int i, j, k; 7C6BZ$(
int mid = (l + r) / 2; ^dp[Z,[1z
if (l == r) Ni;{\"Gt
return; nqw*oLFQ
if ((mid - l) >= THRESHOLD) Zq6ebj
mergeSort(data, temp, l, mid); i~M.F=I5
else {UjIxV(J
insertSort(data, l, mid - l + 1); rH9|JEz
if ((r - mid) > THRESHOLD) Q!$kUcky9
mergeSort(data, temp, mid + 1, r); 39^uLob
else ;kcFQed\w
insertSort(data, mid + 1, r - mid); i=+<7]Q
P24
for (i = l; i <= mid; i++) { [+5SEr}
temp = data; l'X?S(fiV
} :r[-7
[/
for (j = 1; j <= r - mid; j++) { '"NdT7* +
temp[r - j + 1] = data[j + mid]; eXtF[0f
} ~s^6Q#Z9|
int a = temp[l]; fTnyCaB
int b = temp[r]; 1</t #r
for (i = l, j = r, k = l; k <= r; k++) { Zi '8~iEH
if (a < b) { P<w>1
=
data[k] = temp[i++]; E9NGdp&-Ah
a = temp; mm~o%1|WR
} else { t3kh]2t
data[k] = temp[j--]; |x~ei_x7.p
b = temp[j]; G;.u>92r|
} ~8qFM
} 7.=s1~p
} a~+WL
zK]%qv]
/** +vY`?k`
* @param data jYssz4)tp
* @param l F_
lj>;}a5
* @param i U8 @*I>vA
*/ RyIaT
private void insertSort(int[] data, int start, int len) { ;Z0cD*Jb
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); j-\^
}K.&
} +=F);;!
} +/ d8d
} E~U|v'GCd
} ZtZV:re=
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堆排序: A&|(%
uaMm iR
package org.rut.util.algorithm.support; i_9/!D
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import org.rut.util.algorithm.SortUtil; [75e\=wK
XsCbJ[Z_?q
/** eh#
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* @author treeroot - cC(d$y
* @since 2006-2-2 Q? |M BTo
* @version 1.0 k{&E}:A
*/ =cX"gI[
public class HeapSort implements SortUtil.Sort{ X|0`$f
{.[,ee-)9
/* (non-Javadoc) v}t:}M<;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "h|0]y^2
*/ E.*OA y
public void sort(int[] data) { GeR-k9
MaxHeap h=new MaxHeap(); 04LVa|Y@U
h.init(data); :'Kx?Es
for(int i=0;i h.remove(); mr\L q~*c
System.arraycopy(h.queue,1,data,0,data.length); m,"tdVo .
} G@6,O-Sj
Jywz27j
private static class MaxHeap{ \^Q)`Lqp:g
&^<T/PiR
void init(int[] data){ !c' ;L'
this.queue=new int[data.length+1]; }tg n1xpx
for(int i=0;i queue[++size]=data; `RLrT34
fixUp(size); B$eF@v"
} Al;oI3
} G~j<I/)"
omU)hFvyS
private int size=0; 6>^k9cJp
m.X+sP-e
private int[] queue; jtJ8r5j 1
`Y$5g~3.
public int get() { $6+P&"8
return queue[1]; = nN*9HRD
} |xC
TX
vWga>IGM
public void remove() { gDBQ\vM8
SortUtil.swap(queue,1,size--); t|,Ex 7
fixDown(1); e;Z`&
} +opN\`
file://fixdown 9`VF
[*
9
private void fixDown(int k) { VZ!$'??
int j; u $^`hzfI
while ((j = k << 1) <= size) { u 9TlXn
if (j < size %26amp;%26amp; queue[j] j++; *g}&&$b0
if (queue[k]>queue[j]) file://不用交换 XsMphZnK
break; Lu5.$b
SortUtil.swap(queue,j,k); )x s,
k = j; j ZafwBi
} 7l
EwQ
} YA8~O5
private void fixUp(int k) { YCdxU1V
while (k > 1) { Z*B(L@H
int j = k >> 1; (KU@hp-\
if (queue[j]>queue[k]) 0u9h2/ma
break; BGjTa.&
SortUtil.swap(queue,j,k); |ZzBCL8q
k = j; nAj2k
} +Enff0 =+
} Bbp9Q,4
bS"M*
} {NDe9V5
h0pr"]sO;$
} S?tLIi/
Ku'U^=bVm:
SortUtil: SHh(ujz,
X"GQ^]$O
package org.rut.util.algorithm; Hvk?(\x
QyQ8M1m
import org.rut.util.algorithm.support.BubbleSort; <us{4%
import org.rut.util.algorithm.support.HeapSort; p+?WhxG)
import org.rut.util.algorithm.support.ImprovedMergeSort; xo+z[OIlF
import org.rut.util.algorithm.support.ImprovedQuickSort; 1MSu])
W
import org.rut.util.algorithm.support.InsertSort; &d;$k
import org.rut.util.algorithm.support.MergeSort; y?hW#l~#X
import org.rut.util.algorithm.support.QuickSort; {HDlv[O%
import org.rut.util.algorithm.support.SelectionSort; z#/*LP#oY
import org.rut.util.algorithm.support.ShellSort; c^k.
<EA
-qF| Y
f
/** K>eG5tt
* @author treeroot 1=.?KAXR
* @since 2006-2-2 b>EUa> h
* @version 1.0 /ep~/#Ia
*/ ?8/h3xV;
public class SortUtil { _\[G7
public final static int INSERT = 1; ,oil}N(
public final static int BUBBLE = 2; /L^dHI]Q
public final static int SELECTION = 3; }5Uf`pM8
public final static int SHELL = 4; 8m0sEV>
public final static int QUICK = 5; >S]')O$c
public final static int IMPROVED_QUICK = 6; ;{20Heuz
public final static int MERGE = 7; tTt~W5lo
public final static int IMPROVED_MERGE = 8; TQH#sx
public final static int HEAP = 9; :Yqa[._AF
_Ohq'ZgXm
public static void sort(int[] data) { r1]e:
sort(data, IMPROVED_QUICK); @xEQ<g
} J>35q'nN]F
private static String[] name={ T(DE^E@a
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" hrF4 a$
}; t"fD"Xpj
1doqznO
private static Sort[] impl=new Sort[]{ K(2s%
new InsertSort(), QeoDq
new BubbleSort(), f'S"F
new SelectionSort(), N5DS-gv
new ShellSort(), b.&YUg[#
new QuickSort(), {'(8<n57
new ImprovedQuickSort(), 8),Y|4
new MergeSort(), TH &B9
new ImprovedMergeSort(), g~b'}^J
new HeapSort() tHeLq*))
}; >wwEa4
5JXLfYTUI
public static String toString(int algorithm){ (WvA9s{/
return name[algorithm-1]; aT #|mk=\
} 0M?}S~p]
><~hOK?v
public static void sort(int[] data, int algorithm) { ;U&VPIX$
impl[algorithm-1].sort(data); )3
} @T"385>
AP%h!b5v
public static interface Sort { %<t/xAge
public void sort(int[] data); ?%(*bRV -
} =_Rd0,
e<K=Q$U.
public static void swap(int[] data, int i, int j) { _NFJm(X.
int temp = data; Pif1sL6'
data = data[j]; +8M{y D9#
data[j] = temp; ~4 ab\hq
} :|Cf$2k7
} 9tO_hhEQ@