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Commit 805d2de

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Daily Solutions With JS
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‎Medium/885. Spiral Matrix III.js‎

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var spiralMatrixIII = function(rows, cols, rStart, cStart) {
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let r = rStart, c = cStart, results = [];
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results.push([r,c]);
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const walk = (steps,rStep,cStep) => {
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for (let i =0;i<steps;i++) {
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r +=rStep, c+=cStep;
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if ( r>=0 && c >=0 && r < rows && c<cols) results.push([r,c]);
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}
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}
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let distance = 1;
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let rDirection = 0, cDirection = 1;
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while (results.length < rows*cols) {
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walk(distance,rDirection,cDirection);
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[rDirection,cDirection] = [cDirection,rDirection];
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walk(distance,rDirection,cDirection);
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[rDirection,cDirection] = [-1*cDirection,-1*rDirection];
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distance++;
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}
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return results;
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};

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