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。 \8=>l?P
插入排序: Yc /rjEn7O
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package org.rut.util.algorithm.support; DK&J"0jz,
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import org.rut.util.algorithm.SortUtil; lEANN u
/** br>"96A1l
* @author treeroot lzfaW-nu
* @since 2006-2-2 ]k]P (w
* @version 1.0
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*/ :Y0*P
public class InsertSort implements SortUtil.Sort{ U=QV^I Qm
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/* (non-Javadoc) ,S2D/Y^>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H{E223
*/ %rzC+=*;
public void sort(int[] data) { 7$a,pNDw
int temp; 65\'(99yU
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); BE:HO^-.1
} 7<mY{!2iF?
} ~0!s5
} D^]7/w:$-
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冒泡排序: BEx?
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package org.rut.util.algorithm.support; ,Za!
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import org.rut.util.algorithm.SortUtil; `-"2(Gp
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/** :,Q\!s!
* @author treeroot 1CU-^j
* @since 2006-2-2 !=3[Bm G
* @version 1.0 \ty{KAc&
*/ x?9rT 0D
public class BubbleSort implements SortUtil.Sort{ $5jQm,V$K
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/* (non-Javadoc) 9i*t3W71]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -uIu-a]
*/ Kp'_lKW)]q
public void sort(int[] data) { )pJ}
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int temp; C}<j8a?
for(int i=0;i for(int j=data.length-1;j>i;j--){ --4,6va`e
if(data[j] SortUtil.swap(data,j,j-1); ]+<[D2f
} @@"}i7
} 6oMU) DIa
} oDogM`T`
} RSC^R}a5
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} -~\R.<+
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选择排序: "SJp9s3
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package org.rut.util.algorithm.support; Anr''J&9`H
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import org.rut.util.algorithm.SortUtil; dmI~$*
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/** Q>Voa&tYn
* @author treeroot n}/?nP\%
* @since 2006-2-2 ~~>`WA\G5,
* @version 1.0 R?MRRq
*/ h\| ~Q.kG
public class SelectionSort implements SortUtil.Sort { v EppkS U1
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/* d5Hp&tm
* (non-Javadoc) _/(DEF+G
* sdN@ZP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XrP'FLY o
*/ H@ Yj
public void sort(int[] data) { WzG]9$v &
int temp; (K9pr>le
for (int i = 0; i < data.length; i++) { .TZ0FxW
int lowIndex = i; `W>cA64 o
for (int j = data.length - 1; j > i; j--) { ykK21P,v
if (data[j] < data[lowIndex]) { a7$-gW"Z(,
lowIndex = j; cxX/ b,
} X!H[/b:1O
} Qp>'V<%m-
SortUtil.swap(data,i,lowIndex); %G6Q+LMwm
} PL"u^G`
} j IO2uTM~
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} &[
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Shell排序: Yr!@p Hy
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package org.rut.util.algorithm.support; N"/J1
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import org.rut.util.algorithm.SortUtil; LV}Z[\?
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/** !O)je>A
* @author treeroot vciO={M
* @since 2006-2-2 FYBW3y+AF&
* @version 1.0 ,c]<Yu
*/ (1%O;D.*?{
public class ShellSort implements SortUtil.Sort{ !LI
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/* (non-Javadoc) C" SG':
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gh9Gc1tKt
*/ m!Y4+KTwD`
public void sort(int[] data) { k'6x_
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for(int i=data.length/2;i>2;i/=2){ shkyN
for(int j=0;j insertSort(data,j,i); m>FP&~2
} #'y4UN
} '@6O3z_{
insertSort(data,0,1); :<p3L!?8y
} ,vDSY N6
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/** to9X2^
* @param data PAD&sTjE*
* @param j D4OJin^}
* @param i zp'Vn7
*/ [AHoTlPZ
private void insertSort(int[] data, int start, int inc) { ]]Fe:>
int temp; #1)#W6 h\
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A u10]b
} H |%'$oWp
} =D3K})&
} [,yYr
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} ]q`'l_O
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快速排序: u>\u}c
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package org.rut.util.algorithm.support; #O1%k;BL
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import org.rut.util.algorithm.SortUtil; ){< qp
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/** GHRr+
* @author treeroot ,p' ;Xg6ez
* @since 2006-2-2 {
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* @version 1.0 bLsN?_jy
*/ (`"87Xomnn
public class QuickSort implements SortUtil.Sort{ z1m-t#v:
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/* (non-Javadoc) m;cgX#k5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X?aj0# Q
*/ K''2Jfm
public void sort(int[] data) { P`L, eYc
quickSort(data,0,data.length-1); |hD)=sCj
} DQ.; 2W
private void quickSort(int[] data,int i,int j){ !j%#7
int pivotIndex=(i+j)/2; z3p
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file://swap 6<o2 0(?
SortUtil.swap(data,pivotIndex,j); #BW:*$>}
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int k=partition(data,i-1,j,data[j]); 3S"kw
SortUtil.swap(data,k,j); +W+o~BE
if((k-i)>1) quickSort(data,i,k-1); Rm[{^V.Z$
if((j-k)>1) quickSort(data,k+1,j); IFbN ]N0
b *Ca*!
} si1Szmx,
/** m't8\fo^w
* @param data -ZH6*7!
* @param i B8 r#o=q1
* @param j [5-3PuT&9
* @return -5y=K40
*/ [j 'lB
private int partition(int[] data, int l, int r,int pivot) { :~Ppv5W.
do{ _F`RwBOjs
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .R_-$/ZP
SortUtil.swap(data,l,r); ~=t K17i
} zU2Mno
while(l SortUtil.swap(data,l,r); @n;$Edza/
return l; @DuSii#.S
} '8c-V aa
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} P"a9+ti+'
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改进后的快速排序: qa,i:T(w
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package org.rut.util.algorithm.support; >{eGSSG0
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import org.rut.util.algorithm.SortUtil; g]9A?#GyE
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/** i\C~]K~O!
* @author treeroot Y))x'<T'Q
* @since 2006-2-2 ~IQw?a.E
* @version 1.0 Y\j5{;V
*/ [4b_`L
public class ImprovedQuickSort implements SortUtil.Sort { =j~Xrytn
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private static int MAX_STACK_SIZE=4096; I*0TI@Lo
private static int THRESHOLD=10; ]L_h3Xz\X
/* (non-Javadoc) \s_`ZEB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7i88iT
*/ kZNVUhW6S
public void sort(int[] data) { lO=~&_
int[] stack=new int[MAX_STACK_SIZE]; HB9|AQ4K
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int top=-1; ,XYtoZa
int pivot; cc:,,T/i
int pivotIndex,l,r; 5?-@}PL!Y
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stack[++top]=0; *V?p&/>MT
stack[++top]=data.length-1; %Iv*u sXP
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while(top>0){ wD5fm5r=
int j=stack[top--]; a$]i8AeG
int i=stack[top--]; lR0WDJv
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pivotIndex=(i+j)/2; X^)vZL?
pivot=data[pivotIndex]; s'=w/os
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SortUtil.swap(data,pivotIndex,j); Gk]6WLi
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file://partition 3pjK`"Nmz\
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r=j; |6GDIoZ
do{ d'2q~
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h4tAaPcS+
SortUtil.swap(data,l,r); G }U'?p
} o>Q=V0?
while(l SortUtil.swap(data,l,r); :bu]gj4e
SortUtil.swap(data,l,j); S94S[j0D
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if((l-i)>THRESHOLD){ v&Oc,W
stack[++top]=i; o((!3H{D
stack[++top]=l-1; Qgxpq{y
} `w EAU7m:
if((j-l)>THRESHOLD){ cc{^0JT
stack[++top]=l+1; G1G*TSf
stack[++top]=j; }N0v_Nas;v
} N'~l,{
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} 1`)e}p&
file://new InsertSort().sort(data); 2JL\1=k;
insertSort(data); H&!?c5
} &sg~owz
/** 9qI#vHA
* @param data ^]X\boWlI
*/ D2]i*gs
private void insertSort(int[] data) { DE!c+s_g4
int temp; !z2 KQ
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q}cm"lO$
} 0$=w8tP)
} \^x`GsVy
} =:_DXGW2H
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} *u ]aWx
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归并排序: 'f-8P
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package org.rut.util.algorithm.support; hj,y l&
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import org.rut.util.algorithm.SortUtil; c0QKx=
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/** +d=w%r)
* @author treeroot fVz0H1\J&
* @since 2006-2-2 s y>}2orj~
* @version 1.0 6h?)x
*/ 98XlcI#
public class MergeSort implements SortUtil.Sort{ 7mA:~- .u
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/* (non-Javadoc) dfT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eS/Au[wS
*/ SAhk `_
public void sort(int[] data) { nrKir
int[] temp=new int[data.length]; 22@w:
mergeSort(data,temp,0,data.length-1); =w ! 6un
} yq12"Rs
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private void mergeSort(int[] data,int[] temp,int l,int r){ <-"[9 w
int mid=(l+r)/2; ]JHInt
if(l==r) return ; 65l9dM2
mergeSort(data,temp,l,mid); b}!T!IP}
mergeSort(data,temp,mid+1,r); <&l@ ):a
for(int i=l;i<=r;i++){ BHt9$$Z|
temp=data; +LF`ZXe8l
} ;]>a7o
int i1=l; AI]lG]q8
int i2=mid+1; a xz-H`oq4
for(int cur=l;cur<=r;cur++){ HL%|DCo
if(i1==mid+1) y.gjs<y
data[cur]=temp[i2++]; EN5F*s@r
else if(i2>r) aSIoq}c(
data[cur]=temp[i1++]; !M}ZK(
else if(temp[i1] data[cur]=temp[i1++]; ]v#T9QQN
else :"gu=u!
data[cur]=temp[i2++]; OlM3G^1e1
} WmuYHE U
} 0~BZh%s< (
]QJ7q}
} %*OQH?pyx}
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改进后的归并排序: >dnDN3x
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package org.rut.util.algorithm.support; A'n{K#
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import org.rut.util.algorithm.SortUtil; \S>GtlQbn
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/** JZ/T:Hsh4
* @author treeroot B1TWOl?d{
* @since 2006-2-2 +|qw>1J(
* @version 1.0 L=&}s[5
*/ =m6<H
public class ImprovedMergeSort implements SortUtil.Sort { c]NZGn*
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private static final int THRESHOLD = 10; @_
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/* WQsu}_g5y
* (non-Javadoc) *RFBLCt
* xXCsJ9]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uG(XbDZZ1W
*/ P?+
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public void sort(int[] data) { .:=5|0m
int[] temp=new int[data.length]; ]>[0DX]j
mergeSort(data,temp,0,data.length-1); w{ Pl
} c|X}[
}brBhe8a
private void mergeSort(int[] data, int[] temp, int l, int r) { s?PB ]Tr
int i, j, k; 5Q,j+
int mid = (l + r) / 2; -fOBM 4
if (l == r) "p[3^<~uQ
return; zZP&`#TAy
if ((mid - l) >= THRESHOLD) cyB2=,
mergeSort(data, temp, l, mid); 7,Y+FZ
else .M0pb^M
insertSort(data, l, mid - l + 1); S2EV[K8#
if ((r - mid) > THRESHOLD) x[mh^V5ld
mergeSort(data, temp, mid + 1, r); .dj}y
jd]f
else &;U
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insertSort(data, mid + 1, r - mid); Zi<(>@z2
e^UUR-K%
for (i = l; i <= mid; i++) { @>+`1C
temp = data; AJ
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} b^"mQ
for (j = 1; j <= r - mid; j++) { X39%O'
temp[r - j + 1] = data[j + mid]; G6s3\de#U
} e^v\K[
int a = temp[l]; ]PB95%
int b = temp[r]; g`4WisL1n
for (i = l, j = r, k = l; k <= r; k++) { y0'WB`hNQ
if (a < b) { XpPcQIM*
data[k] = temp[i++]; -/_hO$|W
a = temp; [d=BN ,?
} else { ?O0,)hro
data[k] = temp[j--]; f;!L\$yKy
b = temp[j]; \/9 O5`u*V
} K6 ,d{n
} AvB21~t&]
} % -.V6}V
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/** CKX3t:HP0
* @param data yF-`f
_
* @param l Rp>%umDyL
* @param i TJ|do`fw>
*/ >RrG&Wv59
private void insertSort(int[] data, int start, int len) { xu>grj
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sTvw@o*
} Fe2t[y:8h
} Nj +^;Y
} %K0Wm#)
} DH uUEv<
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堆排序: f n8|@)J
.-1'#Z1T
package org.rut.util.algorithm.support; C1OiM b(:
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import org.rut.util.algorithm.SortUtil; [S0wwWU |0
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/** ~6{U^3
* @author treeroot g|j15&x
* @since 2006-2-2 +y\o^w4sT
* @version 1.0 -}RGz_LO/
*/ <(1[n
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public class HeapSort implements SortUtil.Sort{ s<5P sR
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/* (non-Javadoc) >b8-v~o{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w17CZa
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*/ NTVaz.
public void sort(int[] data) { DX ZZZ[#
MaxHeap h=new MaxHeap(); B?4Iu)bCxI
h.init(data); -8v:eyc
for(int i=0;i h.remove(); onm"7JsO'
System.arraycopy(h.queue,1,data,0,data.length); +K,T^<F;
} H(Y 1%@
a'O-0]g,
private static class MaxHeap{ *77Y$X##k
}|wC7*^)
void init(int[] data){ H#G3CD2&
this.queue=new int[data.length+1]; Uy@:-NC)kn
for(int i=0;i queue[++size]=data; 2s}G6'xE]P
fixUp(size); Uy?X-"UR
} w%(D4ldp
} &ViK9
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private int size=0; # hw;aQ
(Dn1Eov
private int[] queue; h<qi[d4X
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public int get() { 5Ha(i [d
return queue[1]; V7D<'!
} *;Za))
uUe#+[bD
public void remove() { O\h%ZLjfO
SortUtil.swap(queue,1,size--); #"C!-kS'=
fixDown(1); M|R\[
Zf
} !Z0S@]C
file://fixdown 8t|?b
private void fixDown(int k) { ! vuun |
int j; 6XnUs1O
while ((j = k << 1) <= size) { 'r1X6?dJ
if (j < size %26amp;%26amp; queue[j] j++; :_Iz(
2hV
if (queue[k]>queue[j]) file://不用交换 u/xP$
break; 2iC BF-,
SortUtil.swap(queue,j,k); T
"#DhEM
k = j; ?QtM|e
} ]C{N4Ni^Z
} 5?|y%YH;R\
private void fixUp(int k) { %vUUx+
while (k > 1) { 8"rK
int j = k >> 1; -![{Zb@
if (queue[j]>queue[k]) IsjN
xBM
break; rl-#Ez
SortUtil.swap(queue,j,k); cfy9wD
k = j; ]hRs -x
} iH>b"H>
} s~k62
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} uWi pjxS
99n;%W>
} M0hR]4T
g!i45]6[Nw
SortUtil: Z%
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IDdu2HNu
package org.rut.util.algorithm; [Scao $
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