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。 #
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插入排序: r:~q{
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package org.rut.util.algorithm.support; V/dL-;W;
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import org.rut.util.algorithm.SortUtil; ahmxbv3f=5
/** t`!@E#VK
* @author treeroot &W*do
* @since 2006-2-2 q L-Ni
* @version 1.0 tmgZNg
*/ 04E
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public class InsertSort implements SortUtil.Sort{ CU+H`-+"J
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/* (non-Javadoc) <t"KNKI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mr[+\
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*/ v"v-c!k
public void sort(int[] data) { _7bQR7s
int temp; GpC*w
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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); h2_A'
} F`eo3z
} a)qlrtCl
} JE=3V^k
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} ;/R \!E
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冒泡排序: "IA:,j.#g
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package org.rut.util.algorithm.support; LUfo@R
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import org.rut.util.algorithm.SortUtil; GS@Zc2JPF
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/** 9:4m@dguh-
* @author treeroot u 2%E(pr
* @since 2006-2-2 sz@Y$<o
* @version 1.0 vo!QJ
*/ 9 .3?$(
public class BubbleSort implements SortUtil.Sort{ 1> 'xmp+#
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/* (non-Javadoc) zS/1v+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VC.zmCglo^
*/ XbYST%|.
public void sort(int[] data) { Q*W$!ZUT
int temp; mFx\[S
for(int i=0;i for(int j=data.length-1;j>i;j--){ s)-O{5;U
if(data[j] SortUtil.swap(data,j,j-1); pkEx.R)
} Y$<p_X,
} ?d5_{*]+v
} pzFM#
} o56UlN
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} Zk<Y+!
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选择排序: k*e$_
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package org.rut.util.algorithm.support; Dk#4^`qp1
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import org.rut.util.algorithm.SortUtil; m;oCi}fL
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/** ohlCuH3
* @author treeroot xDO1gnH%
* @since 2006-2-2 w%uM=YmuT
* @version 1.0 & oj$h
*/ kj]m@mS[
public class SelectionSort implements SortUtil.Sort { du>d ?
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/* tBtmqxx
* (non-Javadoc) #V U>Z|$@N
* D`hg+64}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8\BYm|%aa
*/ ^CfWLL&
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public void sort(int[] data) { #'fQx`LV
int temp; :P?zy| aBi
for (int i = 0; i < data.length; i++) { V[^+lR
int lowIndex = i; !JnxNIr&i|
for (int j = data.length - 1; j > i; j--) { ewOe A|
if (data[j] < data[lowIndex]) { W;^6=(&xn
lowIndex = j; #%{x*y:Ms
} .gs:.X)TG9
} R&@NFin
SortUtil.swap(data,i,lowIndex); ^2-+MWW.
} LLU]KZhtY|
} z *~rd2
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} <Url&Z
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Shell排序: *f
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package org.rut.util.algorithm.support; q!whWA
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import org.rut.util.algorithm.SortUtil; m*rw?nLZ
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/** Mp_SL^g|
* @author treeroot ^wW{7Uq>
* @since 2006-2-2 E-L>.tD
* @version 1.0 fK;I0J
*/ 4)].{Z4q
public class ShellSort implements SortUtil.Sort{ Y=(%t:#_
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/* (non-Javadoc) (AswV7aGe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZeE(gtM
*/ ~=/.ZUQNX
public void sort(int[] data) { !I+F8p
for(int i=data.length/2;i>2;i/=2){ ]>oI3&6s
for(int j=0;j insertSort(data,j,i); v])R6-T-
} JVq`v#8
} !HSX:qAP$
insertSort(data,0,1); PmlQW!gfBi
} JK^pb0ih
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/** ,'a[1RN
* @param data 3&5AbIZ
* @param j [9,34/i
* @param i my*E7[
*/ N51WY7
private void insertSort(int[] data, int start, int inc) { YE[{Y(5;q
int temp; 9YVr9BM'K
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Dfw%Bu
} K(heeZUt
} [5wU0~>'
} o>MB8[r
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} QR(j7>+J^
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快速排序: y7-daek
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package org.rut.util.algorithm.support; 4ad-'
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import org.rut.util.algorithm.SortUtil; ~NBlJULS
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/** u=&$Z
* @author treeroot R7ExMJw
* @since 2006-2-2 VNHt ]Ewj
* @version 1.0 eJ_$Etc
*/ Mk|*=#e;
public class QuickSort implements SortUtil.Sort{ yCZ[z
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/* (non-Javadoc) ]Ag{#GJ5D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (tzfyZ M
*/ xG|n7w*
public void sort(int[] data) { ^k4 n
quickSort(data,0,data.length-1); <-N7Skkk!
} &D#B"XI
private void quickSort(int[] data,int i,int j){ yYPFk
int pivotIndex=(i+j)/2; g{^(EZ,
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SortUtil.swap(data,pivotIndex,j); "J*LR
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int k=partition(data,i-1,j,data[j]); b_GAK
SortUtil.swap(data,k,j); '[Z.\
if((k-i)>1) quickSort(data,i,k-1); b*dEX%H8sf
if((j-k)>1) quickSort(data,k+1,j); dZ"d`M>o6
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} &C.m*^`^
/** *vP:+]
* @param data 0&2eiMKG?n
* @param i Q)ZbnR2Z8
* @param j w02t9vz
* @return _0!<iN L
*/ [J+]1hCZ|
private int partition(int[] data, int l, int r,int pivot) { d1hXzJs
do{ #b+>O+vx8
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &d i=alvv1
SortUtil.swap(data,l,r); "-A@d&5.
} `!7QegJa"
while(l SortUtil.swap(data,l,r); &WHK|bl
return l; U_1N*XK6$
} 02mu%|"
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} C.Re*;EI,
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改进后的快速排序: D}L4uz?
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package org.rut.util.algorithm.support; 0=c:O
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import org.rut.util.algorithm.SortUtil; -r@/8"
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/** Ops""#Zi
* @author treeroot @W\H%VR
* @since 2006-2-2 ^5~)m6=2
* @version 1.0 9Lqo^+0)\
*/ D[bPm:\0M
public class ImprovedQuickSort implements SortUtil.Sort { ~PiCA
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private static int MAX_STACK_SIZE=4096; &ZAc3@l[c
private static int THRESHOLD=10; -`d(>ok
/* (non-Javadoc) zR_yxs'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O`FuXB(t
*/ |
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public void sort(int[] data) { gfmaO]
int[] stack=new int[MAX_STACK_SIZE]; b@yFqgJ_
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int top=-1; q.69<Rs
int pivot; ?&se]\
int pivotIndex,l,r; kq=tL@W`0}
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stack[++top]=0; O>sE~~g]?
stack[++top]=data.length-1; 8`;3`lZ
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while(top>0){ MD=VR(P?eq
int j=stack[top--]; kG|pM54:^
int i=stack[top--]; HK!Vd_&9,
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pivotIndex=(i+j)/2; v9+1[Y";
pivot=data[pivotIndex]; $,#,yl ol
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SortUtil.swap(data,pivotIndex,j); {#J1D*?$"
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file://partition Cd51.Sk(l
l=i-1; 9Qhk~^ngg
r=j; /S\y-M9
do{ 8WRxM%gsH
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); NzuH&o][
SortUtil.swap(data,l,r); :h)A/k_
} @AAkEWo)_
while(l SortUtil.swap(data,l,r); 1PdxoRa4=
SortUtil.swap(data,l,j); o;M-M(EZQ6
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if((l-i)>THRESHOLD){ 8et.A
stack[++top]=i; TLiA>`r=
stack[++top]=l-1; B#9T6|2
} +yYSp8>
if((j-l)>THRESHOLD){ (y{nD~k
stack[++top]=l+1; >m&r,z
stack[++top]=j; PmT,*C`/X
} ht@s!5\LK
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} H-Z1i
file://new InsertSort().sort(data); HnmByn\j
insertSort(data); <u85>x
} kFF)6z:2
/** W_z?t;
* @param data ^7&0Pm
*/ yyVv@
private void insertSort(int[] data) { %Lwd1'C%
int temp; 3O!TVSo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g&6O*vx
} Ro oem dCM
} "JCvsCe
} Al(u|LbQ
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} /o=,\kM
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归并排序: 95CCje{o_
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package org.rut.util.algorithm.support; jboQ)NxT!,
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import org.rut.util.algorithm.SortUtil; >J[Wd<~t
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/** >o"3:/3
* @author treeroot Ood'kAH1B
* @since 2006-2-2 ]kd )j
* @version 1.0 wc5OK0|
*/ VT&R1)c
public class MergeSort implements SortUtil.Sort{ YOHYXhc{S
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/* (non-Javadoc) =w&<LJPJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C4ut!I #
*/ y~N,=5>j
public void sort(int[] data) { K?o} B
int[] temp=new int[data.length]; 4x
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mergeSort(data,temp,0,data.length-1); 4SqZV
} e!(0y)*
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private void mergeSort(int[] data,int[] temp,int l,int r){ @|^2 +K/
int mid=(l+r)/2; \Ow-o0
if(l==r) return ; bUp
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mergeSort(data,temp,l,mid); ?>p<!:E!r
mergeSort(data,temp,mid+1,r); 2W=(
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for(int i=l;i<=r;i++){ 6:Nz=sw8
temp=data; F+@E6I'g
} a+CHrnU\;
int i1=l; $*{$90Q
int i2=mid+1; i-EFq@xl
for(int cur=l;cur<=r;cur++){ c=T^)~$$
if(i1==mid+1) o(/(`/
data[cur]=temp[i2++]; 3e g<)
else if(i2>r) $I7/FZP
data[cur]=temp[i1++]; 3T3p[q4
else if(temp[i1] data[cur]=temp[i1++]; YJ`[$0mam
else ( |1 $zF+
data[cur]=temp[i2++]; 5M{DJ/q
} C||A[JOS
} G'<J8;B*
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改进后的归并排序: AVR9G^ce_
Lw]:/x
package org.rut.util.algorithm.support; 61Nj&1Ze
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import org.rut.util.algorithm.SortUtil; OT9\K_
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/** OKp(A
* @author treeroot pX]*&[X?
* @since 2006-2-2 kQ$Q}3f
* @version 1.0 :ji_dQ8k
*/ 8IH&=3
public class ImprovedMergeSort implements SortUtil.Sort { gkuI!=
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private static final int THRESHOLD = 10; byv(:xk|'e
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/* D4m2*%M
* (non-Javadoc) 8Us5Oi
* k})Ag7c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9BGPq) #
*/ Jr18faEZw
public void sort(int[] data) { ~$f+]7
int[] temp=new int[data.length]; (9BjZ&ej
mergeSort(data,temp,0,data.length-1); <