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/*A05 - Pattern Printing */
/* *
* * *
* * * *
* * * * *
* and the below patters
* * * * *
* * * *
* * *
* *
*/
public class a_0026 {
public static void main(String[] args) {
for (int i =1 ; i<=4 ; i++){ /* use for next line*/
for(int j =1 ; j<=i ; j++){ /* loop start but condition depends on variable i ,above */
System.out.print("*");
}
System.out.println("");
}
System.out.println("next loop code below");
for (int k =1 ; k<=4 ; k++){ /* use for next line*/
for(int l=4; l>=k ; l--){ // for(int l=1; l<=(5-k) ; l++){
System.out.print("*");
}
System.out.println("");
}
}
}
// MA logic
// when i =1 , then j = start from 1 to 1
// when i =2 , then j = start from 1 to 2
// top left - decrement
// when i =1 , then j = start from 4 to 1
// when i =2 , then j = start from 4 to 2
/* a_0027 star pattern*/
/* *
* * *
* * * *
* * * * *
* * * * * *
* * * * *
* * * *
* * *
* *
*/
public class a_0027 {
public static void main(String[] args) {
for(int i =1; i<=5; i++){
for(int j =1; j<=i; j++){
System.err.print("*");
}
System.out.println();
}
for( int k =1; k<=5; k++){
for( int l=4; l>=k; l--){
System.out.print("*");
}
System.out.println();
}
}
}
// MA logic
// same logic as a_0026
/* a_0028 star pattern*/
/* *
* * *
* * * *
* * * * *
* * * * * *
*/
public class a_0028 {
public static void main(String[] args) {
for(int i=1; i<=5;i++){
for(int j=4;j>=i;j--){ // for making this condition , check the i and j value
System.out.print(" ");
}
for(int k=1;k<=i;k++){
System.out.print("*");
}
System.out.println();
}
}
}
// same as logic a_0027
// two pattern w/o new line
/* a_0029 belwo pattern*/
/* * * * * *
* * * * *
* * * *
* * *
* *
*/
public class a_0029 {
public static void main(String[] args) {
for( int i=1; i<=5; i++){
for(int k=1; k<=i; k++){
System.out.print(" ");
}
for(int j=5; j>=i; j--){
System.out.print("*");
}
System.err.println();
}
}
}
// bottom left corner
// top left corner w/o new line
/* a_0030 below star pattern*/
/* *
* **
* ***
* ****
* *****
* ****
* ***
* **
* *
*/
public class a_0030 {
public static void main(String[] args) {
for(int i =1; i<=4 ; i++) { // for this type increment always use condtion less than equal to
for( int j=3;j>=i;j--){
System.out.print(" ");
}
for( int k=1;k<=i;k++){
System.out.print("*");
}
System.out.println();
}
for( int l=1;l<=4;l++){
for(int m=1;m<=l;m++){
System.out.print(" ");
}
for(int n=3;n>=l;n--){
System.out.print("*");
}
System.out.println();
}
}
}
// top left + bottom left + w/o newline
// newline
// bottom left + top left + w/o newline
/* pyrmid pattern 1, 2, 3, 4 pattern*/
/* *
* **
* ***
* *****
* * * * * * * *
*/
public class a_0031 {
public static void main(String[] args) {
for( int i=1;i<=5;i++){
for( int j=4; j>=i; j--){
System.out.print(" ");
}
for( int k=1;k<=i;k++){
System.out.print(" *");
}
System.out.println();
}
System.out.println("second way for printing the pattern ");
for(int l=1;l<=5;l++){
for(int m=5;m>=1;m--){
if(m>l){
System.out.print(" ");
}
else{
System.out.print(" *");
}
}
System.out.println();
}
}
}
// ma for type two
// always run inner loop ( m ) 5 times ( either print * or space, use print ( not println )
// when M>l is true print space, if false print star in one line
// formula
// L=1, 4 space 1 star
// L=2, 3 space 2 star
// L=3, 2 space 3 star
// L=4, 1 space 4 star
// L=5, 0 space 5 star
// l = 1 l =2 l=3 l=4 l=5
// 5 > 1 = " " 5 > 2 = " " 5 > 3 = " " 5 > 4 = " " 5 > 5 = " *"
// 4 > 1 = " " 4 > 2 = " " 4 > 3 = " " 4 > 4 = " *" 4 > 5 = " *"
// 3 > 1 = " " 3 > 2 = " " 3 > 3 = " *" 3 > 4 = " *" 3 > 5 = " *"
// 2 > 1 = " " 2 > 2 = " *" 2 > 3 = " *" 2 > 4 = " *" 2 > 5 = " *"
// 1 > 1 = " *" 1 > 2 = " *" 1 > 3 = " *" 1 > 4 = " *" 1 > 5 = " *"
/* a_0032 star pattern 1, 3, 5, 7, pattern*/
/* *
* ***
* *****
* *******
* *********
*/
public class a_0032 {
public static void main(String[] args) {
for(int i =1;i<=5;i++){
for(int j=4;j>=i;j--){
System.out.print(" ");
}
for(int k=1;k<=i;k++){
System.out.print("*");
}
for( int l=2;l<=i;l++){
System.out.print("*");
}
System.out.println();
}
System.out.println("second way pattern using 3 for loops");
for( int m=1;m<=5;m++){
for(int n=4;n>=m;n--){
System.out.print(" ");
}
for(int o=1;o < (m*2);o++){
System.out.print("*");
}
System.out.println();
}
}
}
// MA for second type
// formula
// m=1 , 1
// m=2 , 3
// m=3 , 5 and so on...
// for m=1 , always loop o less than m*2
// o < ( m*2 )
// for m=1
// o < ( 1*2 ) = 1<2 - "*"
// o < ( 1*2 ) = 2<2
// for m=2
// o < ( 2*2 ) = 1<4 - "*"
// o < ( 2*2 ) = 2<4 - "*"
// o < ( 2*2 ) = 3<4 - "*"
// o < ( 2*2 ) = 4<4
// for m=3
// o < ( 3*2 ) = 1<6 - "*"
// o < ( 3*2 ) = 2<6 - "*"
// o < ( 3*2 ) = 3<6 - "*"
// o < ( 3*2 ) = 4<6 - "*"
// o < ( 3*2 ) = 5<6 - "*"
// o < ( 3*2 ) = 6<6
/* a_0033 reverse of the previous pattern*/
public class a_0033 {
public static void main(String[] args) {
for( int i=1;i<=3;i++){
for( int j=1;j<=i;j++){
System.out.print(" ");
}
for(int k=3;k>=i;k--){
System.out.print("*");
}
for( int l=2;l>=i;l--){
System.out.print("*");
}
System.err.println();
}
System.out.println("second way");
for(int a=1;a<=4;a++){
for(int b=1;b<=a;b++){
System.out.print(" ");
}
for(int c=5;c>(a*2);c--){
System.out.print("*");
}
System.out.println();
}
System.out.println("third way");
for(int w=3;w>=1;w--){
for(int x=3;x>w;x--){ // at x=3, no space, then 2 and then 3 space
System.out.print(" ");
}
for(int y=1;y<(w*2);y++){
System.out.print("*");
}
System.out.println();
}
}
}
// ma third way
// print * if y( which is 1 ) is less than w( which is 6 )
// y < (w*2)
// for w=3
// 1<(3*2) = 1 < 6 - *
// 2<(3*2) = 2 < 6 - *
// 3<(3*2) = 3 < 6 - *
// 4<(3*2) = 4 < 6 - *
// 5<(3*2) = 5 < 6 - *
// 6<(3*2) = 6 < 6
/* a_0034 backward slash star pattern*/
/* *
* *
* *
* *
* *
*/
public class a_0034 {
public static void main(String[] args) {
for( int i=1;i<=5;i++){ //for row
for(int j=1;j<=i;j++){ // for row element in one line
if(i>=2 && j<=(i-1)){
System.out.print(" ");
}
else{
System.out.print("*");
}
}
System.out.println();
}
}
}
// ma code logic
// first make simple pattern
// formula i>=2 && j<=(i-1)
//i=1 0 space 1 star
//i=2 1 space 1 star
//i=3 2 space 1 star
//i=4 3 space 1 star
//i=5 4 space 1 star
// i>=2 = start from second row
// j<=(i-1) = means many space need ( looping number )
// if i=1 then it means 0 or no space print,( only print star)
/* a_0035 print below pattern*/
/* *
* *
* *
* *
* *
*/
public class a_0035 {
public static void main(String[] args) {
for(int i=1;i<=5;i++){
for(int j=4;j>=i;j--){
System.out.print(" ");
}
for( int k=1;k<=i;k++){
if(i>=2 && k>1){
System.out.print(" ");
}
else{
System.out.print("*");
}
}
System.out.println();
}
}
}
// Ma
// two triangle
// left top decrement + right down incremenet
// for left top decrement , print space j=4;j>=i;j--
// i>=2 = start second position of i
// k>1 = start second position of k
/* a_0036 V pattern */
/* * *
* * *
* * *
* * *
* *
*
* */
public class a_0036 {
public static void main(String[] args) {
for(int i=5;i>=1;i--){
for(int j=5;j>i;j--){
System.out.print(" "); // simple inc.
}
for(int k=1;k<(i*2);k++){ // simp dec.
if(k>1 && k<(i*2)-1){
System.out.print(" "); // inner space.
}
else{
System.out.print("*"); //
}
}
System.out.println();
}
}
}
// Ma
// left top decrement + pyrimid 1.3.5 pattern
// simple pattern print
// for space
// k>1 = space starts form second position
// k<(i*2)-1 = and end at the -1 of last position
/* a_0037 A pattern */
public class a_0037 {
public static void main(String[] args) {
for(int i=1;i<=5;i++){
for(int k=5;k>=i;k--){
System.out.print(" "); // dec
}
for(int j=1;j<(i*2);j++){ // simple inc.
if(j>1 && j<(i*2)-1){
System.out.print(" "); // inner space
}
else{
System.out.print("*");
}
}
System.out.println();
}
}
}
// M a
// left down increment + inverted V
// print simple, inverted V = j=1 ; j<(i*2) ; j++
// print space
// j>1 print space fom second position till
// j<((i*2)-1) print till -1 of last position
/* a_0038 cross & box pattern */
/* 0 1 2 3 4 5
* 1 * * * * *
* 2 * * * * *
* 3 * * * * *
* 4 * * * * *
* 5 * * * * *
*/
public class a_0038 {
public static void main(String[] args) {
for(int i =0;i<5;i++){
for( int j=0;j<5;j++){
// System.out.print("*");
if(i==j || i+j==5-1){
System.out.print("*");
}
else{
System.out.print(" ");
}
}
System.out.println();
}
}
}
// Ma
// fomrula where i==j || i+j==4
/* a_0039 empty box pattern */
/*
* j j j j j
* 0 1 2 3 4 5
* i 1 * * * * *
* i 2 * * * * *
* i 3 * * * * *
* i 4 * * * * *
* i 5 * * * * *
*
*/
public class a_0039{
public static void main(String[] args) {
for(int i=1;i<=5;i++){
for(int j=1;j<=5;j++){
// System.out.print(" * ");
if(i>=2 && j>=2 && i<=4 && j<=4){
System.out.print(" ");
}
else{
System.out.print(" *");
}
}
System.out.println();
}
}
}
// simple box printing
// i>=2, prints space excepts the first column ( x axis )
// j>=2, prints space excepts the first row ( y asis )
// i<=4, prints space excepts the last colomn ( x axis)
// j>=4, prints space excepts the last row ( y asis )
/* a_0040 numaric patter 1, 12, 123 and 1, 22, 333 */
public class a_0040 {
public static void main(String[] args) {
for(int i=1;i<=5;i++){
for( int j=1;j<=i;j++){
System.out.print(j);
}
System.out.println();
}
System.out.println("this is another pattern");
for( int k =1;k<=5;k++){
for( int l=1;l<=k;l++){
System.out.print(k);
}
System.out.println();
}
}
}
// ma code logic
// prints j for first pattern
// prints k for second pattern
/* a_0041 number patter 1, 23, 456, 78910*/
public class a_0041 {
public static void main(String[] args) {
int count=0;
for(int i=1;i<=5;i++){
for( int j=1;j<=i;j++){
count=count+1;
System.out.print(" "+count);
}
System.out.println();
}
}
}
// variabel value set to 0 ,
// increment it everytime loop starts
// i=1 j=1 , (0+1) = 1
// i=2 j=1 , (1+1) = 2
// j=1 , (2+1) = 3
// and so on...
/* a_0042 patter 1, 21, 321, 4321..*/
public class a_0042 {
public static void main(String[] args) {
for( int i=1;i<=5;i++){
for(int j=i;j>=1;j--){
System.out.print(j+" ");
}
System.out.println();
}
}
}
/* a_0043 pattern 1, 121, 12321, 1234321, ...*/
public class a_0043 {
public static void main(String[] args) {
for(int i=1;i<=5;i++){
for( int j =1;j<=i;j++){
System.out.print(j+" ");
}
for( int k=(i-1);k>=1;k--){
System.out.print(k+" ");
}
System.out.println();
}
}
}
// make two pattern
// first 1, 12, 123, 1234, ...
// second 1, 21, 321,
/* a_0044 pattern 54321, 5432, 543, 54, 5*/
public class a_0044 {
public static void main(String[] args) {
for( int i=1; i<=5;i++){
for( int j=5;j>=i;j--){
System.out.print(j+" ");
}
System.out.println();
}
}
}
/* a_0045 vertical number pattern*/
/* 1
* 2 6
* 3 7 10
* 4 8 11 13
* 5 9 12 14 15
*
*/
public class a_0045 {
public static void main(String[] args) {
for( int i=1;i<=5;i++){
int no=i;
for(int j=1;j<=i;j++){
System.out.print(no+" ");
no=no+5-j;
}
System.out.println();
}
}
}
/* a_0046 forward reverse number pattern */
/*
* 1 2 3
* 6 5 4
* 7 8 9
* 12 11 10
* 13 14 15
*/
public class a_0046 {
public static void main(String[] args) {
int count=0;
for( int i=1;i<=6;i++){
if(i%2!=0){
for( int j=1;j<=3;j++){
count=count+1;
System.out.print(count+" ");
}
}
else{
int temp=count+1;
for( int j=count+3;j>=temp;j--){
count=count+1;
System.out.print(j+" ");
}
}
System.out.println();
}
}
}
