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| (a,b) => { | |
| var h = a.length > b.length ? a : b; | |
| var l = h==a ? b.split('') : a.split(''); | |
| return h.split('').reduce((x,y,i)=> { | |
| return y == l[i] ? ++x: x; | |
| },0) / h.length; | |
| }("boat","coat") |
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