Numbers in base 10 that are palindromic in bases 2, 4, and 16: Difference between revisions
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m (→{{header|REXX}}: added programming notes about the speed increase.) |
m (→{{header|REXX}}: re-aligned a REXX statement.) |
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idx= 1 /*set the IDX (index) to unity. */ |
idx= 1 /*set the IDX (index) to unity. */ |
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do j=1 by 2 to n-1 /*find int palindromes in bases 2,4,16.*/ |
do j=1 by 2 to n-1 /*find int palindromes in bases 2,4,16.*/ |
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h= d2x(j) /*convert dec. # to hexadecimal. */ |
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if h\==reverse(h) then iterate /*Hex number not palindromic? Skip.*/ /* ◄■■■■■■■■ a filter. */ |
if h\==reverse(h) then iterate /*Hex number not palindromic? Skip.*/ /* ◄■■■■■■■■ a filter. */ |
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b= x2b( d2x(j) ) + 0 /*convert dec. # to hex, then to binary*/ |
b= x2b( d2x(j) ) + 0 /*convert dec. # to hex, then to binary*/ |
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