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。 j|&?BBa9
插入排序: !tT$}?Ano
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package org.rut.util.algorithm.support; R)"Y40nW
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import org.rut.util.algorithm.SortUtil; )IGE2k|
/** XU Hu=2F
* @author treeroot (DCC4%w"
* @since 2006-2-2 ?3"bu$@8
* @version 1.0 aU3
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*/ "]ow1{
public class InsertSort implements SortUtil.Sort{ -So&?3,\A@
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/* (non-Javadoc) :cmfy6h]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 Vj]whE
*/ h*f=
public void sort(int[] data) { -bK# &o,
int temp; h:3`e`J<h
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HPAd@5d(
} ) w.cCDL c
} N?H;fK4v
} EnJAHgRV;e
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} 4Wq{ch
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冒泡排序:
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package org.rut.util.algorithm.support; !Re/W
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import org.rut.util.algorithm.SortUtil; N0h"EV[
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/** \.A~>=:
* @author treeroot MEbx{XC
* @since 2006-2-2 ti)foam
* @version 1.0 m&DDz+g
*/ B&_ 62`
public class BubbleSort implements SortUtil.Sort{ Ud0%O
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/* (non-Javadoc) wh:O"&qk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %b2.JGBqJ
*/ SI3ek9|XU
public void sort(int[] data) { .!Kdi| a)
int temp; h[%`'(
for(int i=0;i for(int j=data.length-1;j>i;j--){ *usfJ-
if(data[j] SortUtil.swap(data,j,j-1); P@:#NU[
} \Nu(+G?e
} gM20n^
} 2 As 4}
} dWE[*a\g
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} uAR!JJ
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选择排序: ~wIVw}
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package org.rut.util.algorithm.support; B2%)G$B
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import org.rut.util.algorithm.SortUtil; fR}|CP
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/** ;"\e
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* @author treeroot 0ANqEQX
* @since 2006-2-2 WEUr;f
* @version 1.0 |Sy|E
*/ g>x2[//pk
public class SelectionSort implements SortUtil.Sort { H1f){L97wR
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/* _CPe
* (non-Javadoc) "-kb=fY
* Z$Ynar
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UXoaUW L
*/ a <FzHCw
public void sort(int[] data) { T{bM/?g
int temp; ;Yyg(Ex
for (int i = 0; i < data.length; i++) { Rk56H
int lowIndex = i; f.rz2)o
for (int j = data.length - 1; j > i; j--) { _wKFT>
if (data[j] < data[lowIndex]) { [kgT"?w=
lowIndex = j; Q <EFd
} (F]f{8
} /s(/6~D|
SortUtil.swap(data,i,lowIndex); FZz\zp
} )MLOYX
} D,d mlv
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} kg7oH.0E
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Shell排序: cUaLv1:HI
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package org.rut.util.algorithm.support; {*As-Y:'F
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import org.rut.util.algorithm.SortUtil; vY<(3[pp
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/** zF.rsNY
* @author treeroot \szx.IZT
* @since 2006-2-2 oA}&o_Q%
* @version 1.0 MZZ4
*/ Z&@X4X"q
public class ShellSort implements SortUtil.Sort{ =-~82%
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/* (non-Javadoc) NTuS(7m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BQmg$N,F
*/ zht^gOs
public void sort(int[] data) { U2=5Nt5
for(int i=data.length/2;i>2;i/=2){ 0K`3BuBs
for(int j=0;j insertSort(data,j,i); |[}YM%e
} g}@_
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} |!i3Y=X
insertSort(data,0,1); 41mg:xW(J
} b[?6/#N
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/** kWc%u-_
* @param data .B{3=z^
* @param j QQ!%lbMK]
* @param i hAHl+q)w?
*/ bKYLBu:
private void insertSort(int[] data, int start, int inc) { [Oe$E5qv)]
int temp; FEw51a+V
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5Jd&3pO
}
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} 4\x'$G
} :Sk0?WU
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} bdk"7N
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快速排序: u^|XQWR$:
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package org.rut.util.algorithm.support; ;hJTJMA6/6
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import org.rut.util.algorithm.SortUtil; 1Z6<W~,1OM
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/** \/la`D
* @author treeroot ` QXO+'j4
* @since 2006-2-2 ]8*g%
* @version 1.0 +'2Mj|d@p
*/ gpVZZ:~
public class QuickSort implements SortUtil.Sort{ Yvs)H'n=
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/* (non-Javadoc) R5NDT4QYU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZOK2BCoW
*/ f{FW7T}O2
public void sort(int[] data) { T|Sz~nO}f
quickSort(data,0,data.length-1); {*ATY+
} wAkpk&R
private void quickSort(int[] data,int i,int j){ g+t-<D"L5
int pivotIndex=(i+j)/2; ]C3{ _?=
file://swap /+.Bc(`
SortUtil.swap(data,pivotIndex,j); ]Vo;ZY_\
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int k=partition(data,i-1,j,data[j]); OGh9^,v
SortUtil.swap(data,k,j); eZIqyw
if((k-i)>1) quickSort(data,i,k-1); y!u)q3J0&
if((j-k)>1) quickSort(data,k+1,j); "yXKu)_
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} d+rrb>-OU
/** /T]2ZX>
* @param data H ifKa/}P8
* @param i qxf!]jm
* @param j EeG7 %S
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* @return & V^Z
*/ VUxuX5B3M
private int partition(int[] data, int l, int r,int pivot) { tq H7M0Ry
do{ F$ShhZgi
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V$VqYy9 *
SortUtil.swap(data,l,r); ?>cx;"xF
} LdwWB
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while(l SortUtil.swap(data,l,r); I?uU}NK
return l; %%)"W
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} >0DQ<@ot:
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} I'HPy.PV
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改进后的快速排序: D+P(
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package org.rut.util.algorithm.support; BaZ$p O^
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import org.rut.util.algorithm.SortUtil; _t||v
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/** ,Md8A`7x~
* @author treeroot ,dhJ\cQ~
* @since 2006-2-2 L15?\|':Y
* @version 1.0 nICc}U?k
*/ B>rz<bPT
public class ImprovedQuickSort implements SortUtil.Sort { r@ujE,D=k
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private static int MAX_STACK_SIZE=4096; U(P^-J<n1
private static int THRESHOLD=10; FkY}6
/* (non-Javadoc) X]8(_[Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q^prHn*@
*/ aUa.!,_dh
public void sort(int[] data) { XLb
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int[] stack=new int[MAX_STACK_SIZE]; g>-pC a
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int top=-1; pYf57u
int pivot; Q)c3=.[>
int pivotIndex,l,r; g = ~Y\$&
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stack[++top]=0; `-W.uOZ0
stack[++top]=data.length-1; `qnp
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while(top>0){ fqrQ1{%UH
int j=stack[top--]; ?g^42IYG
int i=stack[top--]; =!)Ye:\Q
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pivotIndex=(i+j)/2; TwlX'iI_;
pivot=data[pivotIndex]; 7'Z-VO
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SortUtil.swap(data,pivotIndex,j); g xY6 M4
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file://partition i0Ejo;dB
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r=j; k#F |
do{ s|F}Abx,^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); mSLA4[4{
SortUtil.swap(data,l,r); OL]P(HRm]~
} T<yAfnTb`
while(l SortUtil.swap(data,l,r); [ )3rc}:1
SortUtil.swap(data,l,j); */c4b:s
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if((l-i)>THRESHOLD){ v+Eub;m
stack[++top]=i; @~ k4,dJ
stack[++top]=l-1; ]l4\Tdz
} ]H|O
if((j-l)>THRESHOLD){ 9<n2-l|)
stack[++top]=l+1; Ln:6@Ok)5%
stack[++top]=j; [NE|ZL~
} A12EUr5$
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} ,]`|2 j
file://new InsertSort().sort(data); XSk*w'xO
insertSort(data); =~z sah6N
}
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/** z]_2lx2e
* @param data 5~D(jHY;
*/ ebno:)
private void insertSort(int[] data) { /2^"c+/'p
int temp; ;)~}/nR<a
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <*JFY%y"
} YP
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} "5<:Dj/W
} (
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} P5Lb)9_Jw
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归并排序: "<Ozoo1&w
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package org.rut.util.algorithm.support; fGZ56eH:
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import org.rut.util.algorithm.SortUtil; W(pq_H'
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/** {p\ll
* @author treeroot e"oTlB
* @since 2006-2-2 }1fi#
* @version 1.0 .RNY}bbk
*/ E7'
public class MergeSort implements SortUtil.Sort{ '0-YFx'U0V
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/* (non-Javadoc) +*RaX (&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CvhVV"n
*/ >$$z 6A[
public void sort(int[] data) { CbGfVdw/c
int[] temp=new int[data.length]; j,n\`7dD$
mergeSort(data,temp,0,data.length-1); [)+wke9
} o6tPQ (Vi
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private void mergeSort(int[] data,int[] temp,int l,int r){ 5P Zzaz<
int mid=(l+r)/2; E5aRTDLq
if(l==r) return ; K;z$~;F
mergeSort(data,temp,l,mid); _(zZrUHB
mergeSort(data,temp,mid+1,r); Ez8k.]q u
for(int i=l;i<=r;i++){ *+OS;R1<
temp=data; |`ya+/ff+
} ?(Se$iTZ
int i1=l; OZc4 -5
int i2=mid+1; }y%c.
for(int cur=l;cur<=r;cur++){ J>l?HK
if(i1==mid+1) |v:oLgUdH
data[cur]=temp[i2++]; acrR
else if(i2>r) AH{#RD
data[cur]=temp[i1++]; cY5w,.Q/!
else if(temp[i1] data[cur]=temp[i1++]; LZ34x: ,C
else 6Hbu7r*tm
data[cur]=temp[i2++]; g,9&@g/
} 3
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} M>E~eb/
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} X=+|(A,BdY
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改进后的归并排序: nU4to
IM% ,A5u
package org.rut.util.algorithm.support; 5U-SIG*
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import org.rut.util.algorithm.SortUtil; yky%+@2q
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/** -MRX@ a^1
* @author treeroot 5JHWt<n{P
* @since 2006-2-2 V/3@iOwD
* @version 1.0 7u{V1_n1
*/ ^Q6?T(%$
public class ImprovedMergeSort implements SortUtil.Sort { WBD?|Ss
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private static final int THRESHOLD = 10; @R-11wP)M
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/* b'``0OB )
* (non-Javadoc) M8Vc5
* h!@7'Q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ollsB3]]
*/ `OfD^Q=
public void sort(int[] data) { SJ91(K
int[] temp=new int[data.length]; Q^;:Kl.b
mergeSort(data,temp,0,data.length-1); ua"2nVxK_K
} s+~GQcj<T
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private void mergeSort(int[] data, int[] temp, int l, int r) { []v$QR&u#v
int i, j, k; )s,LFIy<A
int mid = (l + r) / 2; Gx
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if (l == r) (dZ]j){
return; [YP{%1*RM
if ((mid - l) >= THRESHOLD) [GPCd@
mergeSort(data, temp, l, mid); y XKddD
else
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insertSort(data, l, mid - l + 1); iO&*WIbg
if ((r - mid) > THRESHOLD) _p>F43%p
mergeSort(data, temp, mid + 1, r); 4(*PM&'R
else J%-4ZB"
insertSort(data, mid + 1, r - mid); `m#-J;la
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for (i = l; i <= mid; i++) { ~4pP(
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temp = data; ; >>n#8`
} }K8e(i6z
for (j = 1; j <= r - mid; j++) { }toe'6
temp[r - j + 1] = data[j + mid]; 51JB,}dGH}
} HdgNy \
int a = temp[l]; 4(sHUWT
int b = temp[r]; mogmr
for (i = l, j = r, k = l; k <= r; k++) { ;p2b^q'
if (a < b) { I 1n,c d[
data[k] = temp[i++]; 5[g\.yi2_]
a = temp; [zBi*%5O
} else { 4w~%MZA^
data[k] = temp[j--]; {aN pk,n
b = temp[j]; `<yQ`Y_X
} =/_u k{
} J,:&U
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} 2mnAL#
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/** X3a 9-
* @param data #gqh0 27
* @param l =qc+sMo
* @param i BO#tn{(#
*/ c\2rKqFD8
private void insertSort(int[] data, int start, int len) { (T0MWp 0
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); PBnH#zm
} /ZD 6pF
} m)} 01N4
} tnaFbmp
} cLl~4jL
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