Created
October 10, 2019 23:30
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JS random integer in range (inclusive)
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| const randomInt = (min, max) => { | |
| const diff = max - min; | |
| const random = Math.floor(Math.random() * (diff + 1)); | |
| return min + random; | |
| }; | |
| const distribution = {}; | |
| [...Array(10000)].forEach(() => { | |
| const random = randomInt(1, 10); | |
| const current = distribution[random] || 0; | |
| distribution[random] = current + 1; | |
| }); | |
| console.log(JSON.stringify(distribution, null, 2)); | |
| /* | |
| 11k iterations for 0..10: | |
| { | |
| "0": 1053, | |
| "1": 1008, | |
| "2": 952, | |
| "3": 1012, | |
| "4": 955, | |
| "5": 1005, | |
| "6": 991, | |
| "7": 1021, | |
| "8": 965, | |
| "9": 1030, | |
| "10": 1008 | |
| } | |
| 10k iterations for -5..4: | |
| { | |
| "0": 991, | |
| "1": 1055, | |
| "2": 976, | |
| "3": 958, | |
| "4": 969, | |
| "-1": 1059, | |
| "-3": 1017, | |
| "-5": 1017, | |
| "-4": 993, | |
| "-2": 965 | |
| } | |
| */ |
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