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BZ - SLR - Match, RegEx, null/undefined OR Catch solution in Clear category for Beginning Zeros by Taylor_Page
import assert from "assert";
//const beginningZeros = (text: string): number => text.match(/\b0+/g)?.[0].length || 0
function beginningZeros(text: string): number {
return text.match(/\b0+/g)?.[0].length || 0
}
console.log('Example:');
console.log(beginningZeros('100'));
// These "asserts" are used for self-checking
assert.equal(beginningZeros('100'), 0);
assert.equal(beginningZeros('001'), 2);
assert.equal(beginningZeros('100100'), 0);
assert.equal(beginningZeros('001001'), 2);
assert.equal(beginningZeros('012345679'), 1);
assert.equal(beginningZeros('0000'), 4);
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May 8, 2020