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。 wuXQa
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插入排序: [z!m
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package org.rut.util.algorithm.support; {g nl6+j
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import org.rut.util.algorithm.SortUtil; 1"CWEL`i
/** L[2N zwO
* @author treeroot 2+y wy^
* @since 2006-2-2 }+m4(lpl
* @version 1.0 b/[X8w'VP
*/ # l9VTzi
public class InsertSort implements SortUtil.Sort{ @}6<,;|DQ
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/* (non-Javadoc) WwsNAJ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kHr-UJ!
*/ e^N~)Nlj
public void sort(int[] data) { >8{w0hh;
int temp; 5nib<B%<V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2fkyz
} VB90 5%
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冒泡排序: k(RKAFjY
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package org.rut.util.algorithm.support; .X3n9]
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import org.rut.util.algorithm.SortUtil; axmq/8X
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/** `=pA;R9
* @author treeroot .Bkfe{^
* @since 2006-2-2 c*\i%I#f2
* @version 1.0 ??e|ec2%
*/ k(Xs&f
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public class BubbleSort implements SortUtil.Sort{ 'eBD/w5U
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/* (non-Javadoc) '%/=\Q`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FWeUZI+
*/ >|RoLV
public void sort(int[] data) { DXD+,y\=
int temp; \YJQN3^46>
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0 ;LF>+fJ
if(data[j] SortUtil.swap(data,j,j-1); KW'nW
} JtSwbdN
} x(sKkm`Q
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} f%n ;Z}=
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选择排序: + R6X
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package org.rut.util.algorithm.support; %x,HQNRDU
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import org.rut.util.algorithm.SortUtil; .!^OmT,u
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/** 0VQBm^$(
* @author treeroot sa<\nH$_X
* @since 2006-2-2 }s?w-u+(c6
* @version 1.0 zk3\v
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*/ OR+_s @Yg
public class SelectionSort implements SortUtil.Sort { ?{ \7th37
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/* HZ!<dy3
* (non-Javadoc) .KG9YGL#
* lmUCrs37
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e/x 9@1s#
*/ /T {R\
public void sort(int[] data) { "x]7et,
int temp; lxZ9y
for (int i = 0; i < data.length; i++) { L Y4bn)Qf
int lowIndex = i; }+S~Ah?(
for (int j = data.length - 1; j > i; j--) { 4W2.K0Ca
if (data[j] < data[lowIndex]) { % &H^UxC
lowIndex = j; 6b2h\+AP
} 6)=;cc{Vr
} *C|*{!
SortUtil.swap(data,i,lowIndex); jR:\D_:
} `=V1w4J
} {=Ji2k0U'
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} Zw4%L?
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Shell排序: )#4(4
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; Exv!!0Cd^
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/** i&m6;>?`
* @author treeroot (I;81h`1G
* @since 2006-2-2 0S+$l
* @version 1.0 o[JZ>nm
*/ ettBque
public class ShellSort implements SortUtil.Sort{ U+ Yu_=o{
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/* (non-Javadoc) FB,rQ9D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o&k,aCQC
*/ >D##94PZ
public void sort(int[] data) { 1PWi~1q{Q
for(int i=data.length/2;i>2;i/=2){ )B-[Q#*A-
for(int j=0;j insertSort(data,j,i); &{wRB l #
} 8eh3K8tL#
} %0vsm+XQ0E
insertSort(data,0,1); J.g6<n
} *GhV1# <
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/** R;U4a2~
* @param data #U3q
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* @param j @3b @]l5
* @param i C[ KMaB
*/ EN}4-P/5
private void insertSort(int[] data, int start, int inc) { X$t!g`
int temp; pfl^GgP#
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); C!v%6[
} KdTWi;mV2-
} d}?KPJ{
} w!d(NA<|0]
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} g38MF
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快速排序: sQrM"i0Y>
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package org.rut.util.algorithm.support; c&<Ei1
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import org.rut.util.algorithm.SortUtil; 'c/8|9jX
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/** dgByl-8Q
* @author treeroot '['x'G50
* @since 2006-2-2 ?d3<GhzlR3
* @version 1.0 i_!$bk<yo
*/ Nd;pkssd
public class QuickSort implements SortUtil.Sort{ cnY}^_
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/* (non-Javadoc) 5VVU%STP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O
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*/ iK5[P
public void sort(int[] data) { .%0a
quickSort(data,0,data.length-1); XVKRT7U
} fCO<-L9k$
private void quickSort(int[] data,int i,int j){ %82:?fq
int pivotIndex=(i+j)/2; egWfKL&iy
file://swap %bG\
SortUtil.swap(data,pivotIndex,j); rNke&z:%X_
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int k=partition(data,i-1,j,data[j]); ?jbx7')
SortUtil.swap(data,k,j); mSEX?so=[
if((k-i)>1) quickSort(data,i,k-1); G8Ow;:Ro
if((j-k)>1) quickSort(data,k+1,j); NUuIhB+
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} G]Im.x3O-
/** z_(4
* @param data :pvVm>
* @param i 'OU3-K
* @param j 9zLeyw\
* @return DoN]v
*/ *^Z -4
private int partition(int[] data, int l, int r,int pivot) { U4iVI#f
do{ dD
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 95/;II
SortUtil.swap(data,l,r); ZxCXru1
} }n,LvA@[0
while(l SortUtil.swap(data,l,r); :prx:7
return l; jS#YqVuN
} <#./q LSR
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} \~C/
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改进后的快速排序: 90=gP
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package org.rut.util.algorithm.support; \MAv's4b@
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import org.rut.util.algorithm.SortUtil; kWCxc0
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/** 0^d<@\
* @author treeroot nbDjoZZ4
* @since 2006-2-2 DKNcp8<J
* @version 1.0 &5%~Qw..
*/ J8&0l&~6
public class ImprovedQuickSort implements SortUtil.Sort { AG Gxx?I
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private static int MAX_STACK_SIZE=4096; )<5hga][~a
private static int THRESHOLD=10; _|COnm
/* (non-Javadoc) AbX#wpp!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FlbM(ofY
*/ ,jy9\n*<t9
public void sort(int[] data) { 8;3I:z&muQ
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; [E qZj/
int pivot; :;&3"-
int pivotIndex,l,r; tR?)C=4,
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stack[++top]=0; #V@vz#bo=
stack[++top]=data.length-1; N1l^%Yf J
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while(top>0){ f!B\X*|
int j=stack[top--]; CI|#,^
int i=stack[top--]; UrdSo"%
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pivotIndex=(i+j)/2; ;jmT5XzL
pivot=data[pivotIndex]; 'pT8S
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SortUtil.swap(data,pivotIndex,j); L,sXJ23.
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file://partition K6nNrd}p:
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r=j; ii ^Nxnc=
do{ 6+SaO
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .h@bp1)l
SortUtil.swap(data,l,r); !*,m=*[3
} rpL]5e!
while(l SortUtil.swap(data,l,r); bKr73S9
SortUtil.swap(data,l,j); pH396GFIW
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if((l-i)>THRESHOLD){ i MF-TR
stack[++top]=i; *zv*T"&ZP
stack[++top]=l-1; 3o_@3-Y%
} X1&c?T1 %[
if((j-l)>THRESHOLD){ bG]?AiWr
stack[++top]=l+1; wkD"EuW(
stack[++top]=j; :MF+`RpL
} S"R(6:hkgu
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}
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file://new InsertSort().sort(data); Jwbb>mB!
insertSort(data); Ots] y
} h?vt6t9
/** D|/
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* @param data X>eFGCz}I
*/ xepp."O
private void insertSort(int[] data) { bqQR";
int temp; YvFt*t
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F?4&qbdD
} DhiIKd9W
} (6i.>%|_
} DxG8`}+
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} W9jxw4)
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归并排序: l' Uj"9r,
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package org.rut.util.algorithm.support; P:m6:F@hO
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import org.rut.util.algorithm.SortUtil; A7zL\U4
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/** P u,JR
* @author treeroot Jmun^Q/h
* @since 2006-2-2 bfKF6
* @version 1.0 A_I\6&b4
*/ nRheByYm
public class MergeSort implements SortUtil.Sort{ _i2k$Nr
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/* (non-Javadoc) G`,M?lmL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &LHS<Nv^:
*/ ed$w5dv
public void sort(int[] data) { 6rN.)dL.#N
int[] temp=new int[data.length]; \y+@mJWa
mergeSort(data,temp,0,data.length-1); ZO]P9b
} \W"p<oo|H
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private void mergeSort(int[] data,int[] temp,int l,int r){ Eb9n6Fg
int mid=(l+r)/2; v`r*Yok;`
if(l==r) return ; uMK8V_p*?
mergeSort(data,temp,l,mid); |}wT/3>\
mergeSort(data,temp,mid+1,r); X>U _v
for(int i=l;i<=r;i++){ M^.>UZKyl
temp=data; +RyV"&v
} B1b9
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int i1=l; 3?<LWrhV3
int i2=mid+1; KDLrt
for(int cur=l;cur<=r;cur++){ ~SYW@o
if(i1==mid+1) aJ
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data[cur]=temp[i2++]; gm7 [m}
else if(i2>r) q;QE(}.g
data[cur]=temp[i1++]; fY!9i5@'
else if(temp[i1] data[cur]=temp[i1++]; E*d UJ.>
else N;i\.oY
data[cur]=temp[i2++]; u4DrZ-v
} Sgn<=8,6c
} H}gp`YW:4
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} - 9a4ej5
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改进后的归并排序: <l<6W-I
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package org.rut.util.algorithm.support; jt3=<&*Bm
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import org.rut.util.algorithm.SortUtil; zEi\#Zg$
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/** q$'[&&