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。 y*+8Z&i.:
插入排序: A)"L+Yu5
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package org.rut.util.algorithm.support; [?I<$f"
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import org.rut.util.algorithm.SortUtil; igA?E56?
/** d=^QK{8
* @author treeroot 02t({>`
* @since 2006-2-2 4%~*}
* @version 1.0 1k4\zVgi
*/
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public class InsertSort implements SortUtil.Sort{ 3W[?D8yi)
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/* (non-Javadoc) KLW5Ad:/rI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #;ObugY,
*/ WyatHC
public void sort(int[] data) { 6H'A]0
int temp; MZQDFuvDxZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T{Xd >
} rHw#<oV
} @ !su7
} d%0Gsga}
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} bI:W4y>I=
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冒泡排序: l%_K$$C
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package org.rut.util.algorithm.support; (+(@P*c1
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import org.rut.util.algorithm.SortUtil; D#1R$4M=
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/** S=)
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* @author treeroot N gF7$@S
* @since 2006-2-2 E& 6I`8
* @version 1.0 !Ea >tQ|
*/ li3,6{S#
public class BubbleSort implements SortUtil.Sort{ g?"QahHG
/Z?o%/bw:
/* (non-Javadoc) TSewq4`K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _"Bj`5S
*/ .8s-)I
public void sort(int[] data) { gC2}?nq*
int temp; qA)YYg/G
for(int i=0;i for(int j=data.length-1;j>i;j--){ LcvczST
if(data[j] SortUtil.swap(data,j,j-1); (CIcM3|9C
} ^wBlQmW7J
} oB5\^V$
} [(x<2MTj
} 4@fv%LOQo
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} k)7i^1U
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选择排序: 03 gbcNo
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package org.rut.util.algorithm.support; ~wuCa!!A
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import org.rut.util.algorithm.SortUtil; b3-j2`#
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/** Jyg1z,B <
* @author treeroot !1I# L!9
* @since 2006-2-2 AVDhgJv
* @version 1.0 F_:zR,P%#
*/ VnW6$W?g
public class SelectionSort implements SortUtil.Sort { k"cMAu.
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/* _f@,)n
* (non-Javadoc) b
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* $,by!w'e:l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xK_UkB-$i
*/ ^/E'Rf3[A
public void sort(int[] data) { 95#]6*#[4!
int temp; .q
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for (int i = 0; i < data.length; i++) { HI|egf@
int lowIndex = i; N}U+K
for (int j = data.length - 1; j > i; j--) { 3>VL>;75[
if (data[j] < data[lowIndex]) { :1 qLRr
lowIndex = j; HcIJ&".~
} QEqYqAGzu|
} 4_-&PZ,d
SortUtil.swap(data,i,lowIndex); 3G4WKg.^
} KdozB!\
} I= :yfW
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} @Ik5BT
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Shell排序: WB (?6"
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package org.rut.util.algorithm.support; KIuj;|!q
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import org.rut.util.algorithm.SortUtil; PCDvEbpG
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/** 4u2_xbT
* @author treeroot ):+^893)
* @since 2006-2-2 qoph#\
* @version 1.0 Ub\&k[F
*/ kotKKs
public class ShellSort implements SortUtil.Sort{ fe6Op
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/* (non-Javadoc) ^LSD_R^N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \8{Tj54NA
*/ N1n\tA?
public void sort(int[] data) { 7|J&fc5BP
for(int i=data.length/2;i>2;i/=2){ z __#PQ,n
for(int j=0;j insertSort(data,j,i); jt @2S
} #N=_-
} RHu,t5,
insertSort(data,0,1); @[/!e`]+
} '/ueY#eG
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/** ]/R>nT
* @param data b?9'-hK<
* @param j =/xXB
* @param i [ifQLsHA
*/ h^K>(x
private void insertSort(int[] data, int start, int inc) { l29AC}^
int temp; 9 771D
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); at3YL[,[Z
} !VfVpi+-
} ,5sv;
} .L]2g$W\p
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} b DF_
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快速排序: sg]g;U
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package org.rut.util.algorithm.support; mL,{ZL ^
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import org.rut.util.algorithm.SortUtil; hn/SS
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/** :~,akX$
* @author treeroot %ZlnGr
* @since 2006-2-2 cja-MljD
* @version 1.0 7nPm{=BG
*/ ~-(X\:z}
public class QuickSort implements SortUtil.Sort{ afcyAzIB&
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/* (non-Javadoc) JnH5v(/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 495(V(+5
*/
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public void sort(int[] data) { *-_joAWTG
quickSort(data,0,data.length-1); w?c~be$
} X`daaG_l
private void quickSort(int[] data,int i,int j){ "\1V^2kMr
int pivotIndex=(i+j)/2; t+SLU6j,
file://swap l'Z `%}R
SortUtil.swap(data,pivotIndex,j);
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int k=partition(data,i-1,j,data[j]); |a[ :L
SortUtil.swap(data,k,j); L`Q9-#Y
if((k-i)>1) quickSort(data,i,k-1); /B9jmvj`
if((j-k)>1) quickSort(data,k+1,j); z0&I>PG^
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} SxCzI$SGu
/** JYWc3o6
* @param data _N`pwxpsb
* @param i m4@w M?
* @param j /T2f~1R
* @return gbRdng7(}
*/ x@>^ c:-f
private int partition(int[] data, int l, int r,int pivot) { -Qco4>Z 8
do{ #8jH_bi
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 6Bm2_B
SortUtil.swap(data,l,r); 3/hAxd
} DK;/eZe
while(l SortUtil.swap(data,l,r); >'zp
return l; IyA8+N
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} 0#KB.2AP
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} l+V5dZ8W
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改进后的快速排序: [f'DxZF-
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package org.rut.util.algorithm.support; Wh>Y_ k
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import org.rut.util.algorithm.SortUtil; Cx/duodp
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/** jQ31u
* @author treeroot 1P\_3.V{
* @since 2006-2-2 bqg\V8h
* @version 1.0 d|sI>6jD
*/ a[8_O-
public class ImprovedQuickSort implements SortUtil.Sort { 5+O#5"v_
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private static int MAX_STACK_SIZE=4096; u$[T8UqF
private static int THRESHOLD=10; m,TqyP#
/* (non-Javadoc) yx }Z:t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~+$l9~`{
*/ kB]|4CG{
public void sort(int[] data) { Z
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int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; 3-8Vw$u
int pivot; qwaw\vOA
int pivotIndex,l,r; yK&)H+v
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stack[++top]=0; a Ts_5q
stack[++top]=data.length-1; {+t'XkA
}wkBa]
while(top>0){ Qzh:*O
int j=stack[top--]; )-a_,3x%j
int i=stack[top--]; 3P6!j
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pivotIndex=(i+j)/2; xD1B50y U
pivot=data[pivotIndex]; +uwjZN'9a
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SortUtil.swap(data,pivotIndex,j); 9au)K!hN
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file://partition %e1vq
l=i-1; O.K8$
r=j; sX_ ^H%fd
do{ c@q>5fR/c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 6y5arP*6e
SortUtil.swap(data,l,r); >v<}$v6D~
} {Ue6DK%
while(l SortUtil.swap(data,l,r); "|Q&
SortUtil.swap(data,l,j); KuI>:i;
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if((l-i)>THRESHOLD){ VBCj.dw
stack[++top]=i; oC[wYUDg
stack[++top]=l-1; Mm[%v
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} {G{@bUG]p
if((j-l)>THRESHOLD){ iGU N$
stack[++top]=l+1; }5] s+m
stack[++top]=j; D@JHi'F
} "+Qh,fTt
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} 7R2)Klt
file://new InsertSort().sort(data); s{:
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insertSort(data); <m6I)}K
} \qTNWA#'
/** #U_u~7?H$
* @param data `Ys })Pl
*/ m5x>._7le
private void insertSort(int[] data) { Ti/iD2g
int temp; Q)}\4&4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G[^G~U\+!
} IIR?@/q
} k?8W2fC
} nRE}F5k
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} <V8i>LBlz
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归并排序: |zT0g]WH
Ni)#tz_9
package org.rut.util.algorithm.support; h9-Ky@X`
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import org.rut.util.algorithm.SortUtil; \9?<E[
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/** 1c4%g-]7
* @author treeroot DvKM>P%|
* @since 2006-2-2 $^XPk#$m
* @version 1.0 7fEV/j
*/ w+Z};C
public class MergeSort implements SortUtil.Sort{ ]VH@\
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/* (non-Javadoc) &sgwY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^0
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*/ S- \lN|
public void sort(int[] data) { 3,5wWT]
)
int[] temp=new int[data.length]; c>!J@[,
mergeSort(data,temp,0,data.length-1); Ny'v/+nQ
} DnFl*T>
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private void mergeSort(int[] data,int[] temp,int l,int r){ -]A#G`'
int mid=(l+r)/2; }"x*xN
if(l==r) return ; "3MUrIsB>
mergeSort(data,temp,l,mid); @(?4g-*E
mergeSort(data,temp,mid+1,r); \@3
for(int i=l;i<=r;i++){ eM"mP&TTL
temp=data; B3t>M)
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} NETC{:j
int i1=l; TjK5UML
int i2=mid+1; a0.3$
for(int cur=l;cur<=r;cur++){ wg.fo:Q
if(i1==mid+1) LD~'^+W
data[cur]=temp[i2++]; |P7f^0idk
else if(i2>r) z{0;%E
data[cur]=temp[i1++]; rM=A"
else if(temp[i1] data[cur]=temp[i1++]; z=_{jjs
else cB}2(`z9
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data[cur]=temp[i2++]; 6<$|;w-OV
} 3/=QZ8HA&-
} Nt-SCLDM
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} .6F3;bg R7
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改进后的归并排序: b[;3KmUB
J\$l3i/I
package org.rut.util.algorithm.support; 3F} KrG
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import org.rut.util.algorithm.SortUtil; }C"*ACjF
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/** 5@+E i25
* @author treeroot HHTsHb{7
* @since 2006-2-2 }a1Sfl@`3
* @version 1.0 e=UVsYNx
*/ /B\-DP3K
public class ImprovedMergeSort implements SortUtil.Sort { {/xs9.8:JX
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private static final int THRESHOLD = 10; `A _8nW)
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/* uEGPgYY (
* (non-Javadoc) tZCe?n]
* *Yu\YjLPG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K[gWXBP
*/ U.7y8#qf3R
public void sort(int[] data) { xqC<p`?4
int[] temp=new int[data.length]; qZsddll
mergeSort(data,temp,0,data.length-1); UZ\*]mxT
} y*b.eO
k-pEBhOH
private void mergeSort(int[] data, int[] temp, int l, int r) { Ji:iKkI
int i, j, k; YATdGLTeq
int mid = (l + r) / 2; a950M7
if (l == r) DGZY~(]
return; ivX37,B\bS
if ((mid - l) >= THRESHOLD) ?6iatI !
mergeSort(data, temp, l, mid); 4JZHjf0M6
else iE^a%|?}
insertSort(data, l, mid - l + 1); )ClMw!ZrU
if ((r - mid) > THRESHOLD) Ryq"\Q>+
mergeSort(data, temp, mid + 1, r); bLM"t0
else yD"0=\
insertSort(data, mid + 1, r - mid); \;*}zX
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for (i = l; i <= mid; i++) { $?)3&\)R
temp = data; jfY{z=*]u
} C. Ja;RFq
for (j = 1; j <= r - mid; j++) { Lubs{-5lk
temp[r - j + 1] = data[j + mid]; xe6_RO%
} fcE)V#c"g
int a = temp[l]; t+ S~u^
int b = temp[r]; W>0"CUp
for (i = l, j = r, k = l; k <= r; k++) { 1U7,X6=~
if (a < b) { zd9]qo
data[k] = temp[i++]; f>8B'%]
a = temp; fNqmTRu
} else { O*rmD<L$
data[k] = temp[j--]; ^b"bRQqm
b = temp[j]; NYjS
} lkg"'p{
} ~n/Aq*
} !2Y!jz
Dr6s^}}~n
/** *t.q m5h
* @param data g %\$ !b
* @param l i-k >U}[%
* @param i fK'.wX9
*/ B [+(r
private void insertSort(int[] data, int start, int len) { ,!I?)hwOC
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); CQSpPQA
} _hy{F%}
} *qPdZ
} `V&1]C8x
} `S \zqF<
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堆排序: ou'~{-_xd
I/On3"U%
package org.rut.util.algorithm.support; 2~!R*i
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import org.rut.util.algorithm.SortUtil; z.3<{-n}0i
}!%JYG^!D
/** V uG?B{
* @author treeroot iuC7Y|
* @since 2006-2-2 p^1zIC>F
* @version 1.0 g@~!kh,TH
*/ ]*N:;J
public class HeapSort implements SortUtil.Sort{ V@D]bV@4
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/* (non-Javadoc) M18qa,fK{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BXg!zW%+
*/ |h&<_9
public void sort(int[] data) { u8YB)kG
MaxHeap h=new MaxHeap(); Kt
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h.init(data); T[;;9z
for(int i=0;i h.remove(); e74zR6
System.arraycopy(h.queue,1,data,0,data.length); ]~-*hOcQ4
} T><{ze
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private static class MaxHeap{ z %x7fe
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void init(int[] data){ i"vawxm
this.queue=new int[data.length+1]; vS OT*0r
for(int i=0;i queue[++size]=data; Q>.BQ;q]
fixUp(size); TQP+>nS,
} iF!mV5#
} 55.;+B5L*
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private int size=0; 8-7dokg>
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private int[] queue; s/
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k$h [8l(<
public int get() { )^4hQ3BS
return queue[1]; Q1Ux!$_
} EYL]TeS
b"``D ?
public void remove() { 9UwLF`XM
SortUtil.swap(queue,1,size--); >$\Bu]{1
fixDown(1); N{8"s&